Re: Re: [moderation/CI] Re: netlink: fix skb refcount leak when dump start fails
syzbot <[email protected]>
| Newsgroups | dev.linux.lists.syzbot |
|---|---|
| Message-ID | <[email protected]> |
>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> #syz upstream >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> Failed to process the command. Contact [email protected]. >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> On Thu, May 28, 2026 at 4:39 PM syzbot ci >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> <[email protected]> wrote: >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> syzbot ci has tested the following series >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> [v1] netlink: fix skb refcount leak when dump start fails >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> https://lore.kernel.org/all/[email protected] >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> * [PATCH] netlink: fix skb refcount leak when dump start fails >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> and found the following issues: >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> * KASAN: slab-use-after-free Read in nl80211_prepare_wdev_dump >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> * KASAN: slab-use-after-free Read in xfrm_dump_sa_done >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> * KASAN: slab-use-after-free Write in sk_skb_reason_drop >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> Full report is available here: >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> https://ci.syzbot.org/series/8ed6f41d-0d02-4f1f-a7be-cc639c2b4cfd >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> *** >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> KASAN: slab-use-after-free Read in nl80211_prepare_wdev_dump >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> tree: net >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> URL: https://kernel.googlesource.com/pub/scm/linux/kernel/git/netdev/net.git >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> base: 18014147d3ee7831dce53fe65d7fc8d428b02552 >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> arch: amd64 >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> compiler: Debian clang version 21.1.8 (++20251221033036+2078da43e25a-1~exp1~20251221153213.50), Debian LLD 21.1.8 >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> config: https://ci.syzbot.org/builds/90c5185d-0dad-4c34-a563-4253ebb12eb2/config >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> syz repro: https://ci.syzbot.org/findings/0ad9835c-f631-4240-a3ad-2610bca3de33/syz_repro >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> ================================================================== >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> BUG: KASAN: slab-use-after-free in __nlmsg_parse include/net/netlink.h:784 [inline] >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> BUG: KASAN: slab-use-after-free in nlmsg_parse_deprecated include/net/netlink.h:830 [inline] >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> BUG: KASAN: slab-use-after-free in nl80211_prepare_wdev_dump+0x634/0x680 net/wireless/nl80211.c:1245 >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> Read of size 4 at addr ffff88816e172d80 by task syz.0.17/5814 >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> CPU: 1 UID: 0 PID: 5814 Comm: syz.0.17 Not tainted syzkaller #0 PREEMPT(full) >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014 >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> Call Trace: >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> <TASK> >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> dump_stack_lvl+0xe8/0x150 lib/dump_stack.c:120 >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> print_address_description+0x55/0x1e0 mm/kasan/report.c:378 >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> print_report+0x58/0x70 mm/kasan/report.c:482 >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> kasan_report+0x117/0x150 mm/kasan/report.c:595 >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> __nlmsg_parse include/net/netlink.h:784 [inline] >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> nlmsg_parse_deprecated include/net/netlink.h:830 [inline] >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> nl80211_prepare_wdev_dump+0x634/0x680 net/wireless/nl80211.c:1245 >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> nl80211_dump_station+0x186/0xdb0 net/wireless/nl80211.c:8216 >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> genl_dumpit+0x10b/0x1b0 net/netlink/genetlink.c:1026 >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> netlink_dump+0x702/0xe10 net/netlink/af_netlink.c:2325 >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> netlink_recvmsg+0x690/0xa50 net/netlink/af_netlink.c:1976 >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> sock_recvmsg_nosec net/socket.c:1137 [inline] >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> sock_recvmsg+0x172/0x1b0 net/socket.c:1159 >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> __sys_recvfrom+0x240/0x3c0 net/socket.c:2315 >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> __do_sys_recvfrom net/socket.c:2330 [inline] >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> __se_sys_recvfrom net/socket.c:2326 [inline] >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> __x64_sys_recvfrom+0xde/0x100 net/socket.c:2326 >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> do_syscall_64+0x15f/0xf80 arch/x86/entry/syscall_64.c:94 >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> entry_SYSCALL_64_after_hwframe+0x77/0x7f >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> RIP: 0033:0x7fd64155d68e >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> Code: 08 0f 85 a5 a8 ff ff 49 89 fb 48 89 f0 48 89 d7 48 89 ce 4c 89 c2 4d 89 ca 4c 8b 44 24 08 4c 8b 4c 24 10 4c 89 5c 24 08 0f 05 <c3> 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 80 00 00 00 00 48 83 ec 08 >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> RSP: 002b:00007fd6424b5e88 EFLAGS: 00000246 ORIG_RAX: 000000000000002d >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> RAX: ffffffffffffffda RBX: 00007fd6424b76c0 RCX: 00007fd64155d68e >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> RDX: 0000000000001000 RSI: 00007fd6424b6000 RDI: 0000000000000003 >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000003 >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> R13: 00007fd6424b5f58 R14: 00007fd6424b6000 R15: 0000000000000000 >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> </TASK> >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> Allocated by task 5813: >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> kasan_save_stack mm/kasan/common.c:57 [inline] >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> kasan_save_track+0x3e/0x80 mm/kasan/common.c:78 >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> unpoison_slab_object mm/kasan/common.c:340 [inline] >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> __kasan_slab_alloc+0x6c/0x80 mm/kasan/common.c:366 >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> kasan_slab_alloc include/linux/kasan.h:253 [inline] >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> slab_post_alloc_hook mm/slub.c:4569 [inline] >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> slab_alloc_node mm/slub.c:4898 [inline] >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> kmem_cache_alloc_node_noprof+0x384/0x690 mm/slub.c:4950 >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> kmalloc_reserve net/core/skbuff.c:613 [inline] >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> __alloc_skb+0x27d/0x7d0 net/core/skbuff.c:713 >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> netlink_sendmsg+0x5d4/0xb40 net/netlink/af_netlink.c:1869 >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> sock_sendmsg_nosec net/socket.c:787 [inline] >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> __sock_sendmsg net/socket.c:802 [inline] >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> ____sys_sendmsg+0x972/0x9f0 net/socket.c:2698 >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> ___sys_sendmsg+0x2a5/0x360 net/socket.c:2752 >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> __sys_sendmsg net/socket.c:2784 [inline] >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> __do_sys_sendmsg net/socket.c:2789 [inline] >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> __se_sys_sendmsg net/socket.c:2787 [inline] >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> __x64_sys_sendmsg+0x1bd/0x2a0 net/socket.c:2787 >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> do_syscall_64+0x15f/0xf80 arch/x86/entry/syscall_64.c:94 >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> entry_SYSCALL_64_after_hwframe+0x77/0x7f >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> Freed by task 5813: >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> kasan_save_stack mm/kasan/common.c:57 [inline] >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> kasan_save_track+0x3e/0x80 mm/kasan/common.c:78 >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> kasan_save_free_info+0x46/0x50 mm/kasan/generic.c:584 >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> poison_slab_object mm/kasan/common.c:253 [inline] >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> __kasan_slab_free+0x5c/0x80 mm/kasan/common.c:285 >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> kasan_slab_free include/linux/kasan.h:235 [inline] >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> slab_free_hook mm/slub.c:2689 [inline] >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> slab_free mm/slub.c:6250 [inline] >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> kfree+0x1c5/0x640 mm/slub.c:6565 >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> skb_kfree_head net/core/skbuff.c:1075 [inline] >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> skb_free_head net/core/skbuff.c:1087 [inline] >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> skb_release_data+0x828/0xa60 net/core/skbuff.c:1114 >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> skb_release_all net/core/skbuff.c:1189 [inline] >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> __kfree_skb+0x5d/0x210 net/core/skbuff.c:1203 >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> netlink_unicast_kernel net/netlink/af_netlink.c:1319 [inline] >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> netlink_unicast+0x764/0x8e0 net/netlink/af_netlink.c:1344 >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> netlink_sendmsg+0x813/0xb40 net/netlink/af_netlink.c:1894 >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> sock_sendmsg_nosec net/socket.c:787 [inline] >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> __sock_sendmsg net/socket.c:802 [inline] >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> ____sys_sendmsg+0x972/0x9f0 net/socket.c:2698 >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> ___sys_sendmsg+0x2a5/0x360 net/socket.c:2752 >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> __sys_sendmsg net/socket.c:2784 [inline] >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> __do_sys_sendmsg net/socket.c:2789 [inline] >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> __se_sys_sendmsg net/socket.c:2787 [inline] >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> __x64_sys_sendmsg+0x1bd/0x2a0 net/socket.c:2787 >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> do_syscall_64+0x15f/0xf80 arch/x86/entry/syscall_64.c:94 >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> entry_SYSCALL_64_after_hwframe+0x77/0x7f >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> The buggy address belongs to the object at ffff88816e172d80 >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> which belongs to the cache skbuff_small_head of size 704 >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> The buggy address is located 0 bytes inside of >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> freed 704-byte region [ffff88816e172d80, ffff88816e173040) >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> The buggy address belongs to the physical page: >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x16e170 >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> head: order:2 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0 >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> flags: 0x57ff00000000040(head|node=1|zone=2|lastcpupid=0x7ff) >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> page_type: f5(slab) >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> raw: 057ff00000000040 ffff888160415140 dead000000000100 dead000000000122 >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> raw: 0000000000000000 0000000800120012 00000000f5000000 0000000000000000 >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> head: 057ff00000000040 ffff888160415140 dead000000000100 dead000000000122 >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> head: 0000000000000000 0000000800120012 00000000f5000000 0000000000000000 >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> head: 057ff00000000002 ffffffffffffff01 00000000ffffffff 00000000ffffffff >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> head: ffffffffffffffff 0000000000000000 00000000ffffffff 0000000000000004 >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> page dumped because: kasan: bad access detected >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> page_owner tracks the page as allocated >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> page last allocated via order 2, migratetype Unmovable, gfp_mask 0xd2820(GFP_ATOMIC|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC), pid 5530, tgid 5530 (sshd), ts 47735478218, free_ts 34702748767 >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> set_page_owner include/linux/page_owner.h:32 [inline] >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> post_alloc_hook+0x22d/0x280 mm/page_alloc.c:1858 >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> prep_new_page mm/page_alloc.c:1866 [inline] >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> get_page_from_freelist+0x24ba/0x2540 mm/page_alloc.c:3946 >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> __alloc_frozen_pages_noprof+0x18d/0x380 mm/page_alloc.c:5226 >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> alloc_slab_page mm/slub.c:3278 [inline] >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> allocate_slab+0x77/0x660 mm/slub.c:3467 >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> new_slab mm/slub.c:3525 [inline] >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> refill_objects+0x339/0x3d0 mm/slub.c:7271 >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> refill_sheaf mm/slub.c:2816 [inline] >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> __pcs_replace_empty_main+0x321/0x720 mm/slub.c:4651 >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> alloc_from_pcs mm/slub.c:4749 [inline] >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> slab_alloc_node mm/slub.c:4883 [inline] >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> kmem_cache_alloc_node_noprof+0x441/0x690 mm/slub.c:4950 >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> kmalloc_reserve net/core/skbuff.c:613 [inline] >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> __alloc_skb+0x27d/0x7d0 net/core/skbuff.c:713 >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> alloc_skb include/linux/skbuff.h:1383 [inline] >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> __tcp_send_ack+0xae/0x4f0 net/ipv4/tcp_output.c:4473 >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> tcp_cleanup_rbuf net/ipv4/tcp.c:1612 [inline] >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> tcp_recvmsg_locked+0x2dfa/0x3720 net/ipv4/tcp.c:2916 >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> tcp_recvmsg+0x205/0x7e0 net/ipv4/tcp.c:2945 >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> sock_recvmsg_nosec net/socket.c:1137 [inline] >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> sock_recvmsg+0x155/0x1b0 net/socket.c:1159 >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> sock_read_iter+0x251/0x320 net/socket.c:1229 >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> new_sync_read fs/read_write.c:493 [inline] >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> vfs_read+0x582/0xa70 fs/read_write.c:574 >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> ksys_read+0x150/0x270 fs/read_write.c:717 >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> do_syscall_64+0x15f/0xf80 arch/x86/entry/syscall_64.c:94 >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> page last free pid 5059 tgid 5059 stack trace: >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> reset_page_owner include/linux/page_owner.h:25 [inline] >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> __free_pages_prepare mm/page_alloc.c:1402 [inline] >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> __free_frozen_pages+0xbc7/0xd30 mm/page_alloc.c:2943 >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> __slab_free+0x274/0x2c0 mm/slub.c:5612 >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> qlink_free mm/kasan/quarantine.c:163 [inline] >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> qlist_free_all+0x99/0x100 mm/kasan/quarantine.c:179 >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> kasan_quarantine_reduce+0x148/0x160 mm/kasan/quarantine.c:286 >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> __kasan_slab_alloc+0x22/0x80 mm/kasan/common.c:350 >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> kasan_slab_alloc include/linux/kasan.h:253 [inline] >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> slab_post_alloc_hook mm/slub.c:4569 [inline] >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> slab_alloc_node mm/slub.c:4898 [inline] >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> __do_kmalloc_node mm/slub.c:5294 [inline] >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> __kvmalloc_node_noprof+0x4d7/0x8a0 mm/slub.c:6832 >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> seq_buf_alloc fs/seq_file.c:39 [inline] >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> seq_read_iter+0x202/0xe10 fs/seq_file.c:211 >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> new_sync_read fs/read_write.c:493 [inline] >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> vfs_read+0x582/0xa70 fs/read_write.c:574 >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> ksys_read+0x150/0x270 fs/read_write.c:717 >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> do_syscall_64+0x15f/0xf80 arch/x86/entry/syscall_64.c:94 >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> entry_SYSCALL_64_after_hwframe+0x77/0x7f >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> Memory state around the buggy address: >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> ffff88816e172c80: fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> ffff88816e172d00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> >ffff88816e172d80: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> ^ >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> ffff88816e172e00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> ffff88816e172e80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> ================================================================== >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> *** >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> KASAN: slab-use-after-free Read in xfrm_dump_sa_done >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> tree: net >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> URL: https://kernel.googlesource.com/pub/scm/linux/kernel/git/netdev/net.git >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> base: 18014147d3ee7831dce53fe65d7fc8d428b02552 >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> arch: amd64 >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> compiler: Debian clang version 21.1.8 (++20251221033036+2078da43e25a-1~exp1~20251221153213.50), Debian LLD 21.1.8 >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> config: https://ci.syzbot.org/builds/90c5185d-0dad-4c34-a563-4253ebb12eb2/config >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> syz repro: https://ci.syzbot.org/findings/53579ff8-1479-4e0c-ae08-2f1ea756ee1b/syz_repro >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> ================================================================== >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> BUG: KASAN: slab-use-after-free in xfrm_dump_sa_done+0x54/0xd0 net/xfrm/xfrm_user.c:1491 >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> Read of size 8 at addr ffff888167305398 by task syz.0.17/5812 >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> CPU: 1 UID: 0 PID: 5812 Comm: syz.0.17 Not tainted syzkaller #0 PREEMPT(full) >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014 >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> Call Trace: >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> <TASK> >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> dump_stack_lvl+0xe8/0x150 lib/dump_stack.c:120 >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> print_address_description+0x55/0x1e0 mm/kasan/report.c:378 >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> print_report+0x58/0x70 mm/kasan/report.c:482 >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> kasan_report+0x117/0x150 mm/kasan/report.c:595 >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> xfrm_dump_sa_done+0x54/0xd0 net/xfrm/xfrm_user.c:1491 >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> netlink_release+0x12c8/0x1ad0 net/netlink/af_netlink.c:768 >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> __sock_release net/socket.c:722 [inline] >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> sock_close+0xc3/0x240 net/socket.c:1514 >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> __fput+0x44f/0xa60 fs/file_table.c:510 >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> task_work_run+0x1d9/0x270 kernel/task_work.c:233 >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> resume_user_mode_work include/linux/resume_user_mode.h:50 [inline] >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> __exit_to_user_mode_loop kernel/entry/common.c:67 [inline] >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> exit_to_user_mode_loop+0xf3/0x4d0 kernel/entry/common.c:98 >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> __exit_to_user_mode_prepare include/linux/irq-entry-common.h:207 [inline] >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> syscall_exit_to_user_mode_prepare include/linux/irq-entry-common.h:230 [inline] >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> syscall_exit_to_user_mode include/linux/entry-common.h:318 [inline] >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> do_syscall_64+0x33e/0xf80 arch/x86/entry/syscall_64.c:100 >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> entry_SYSCALL_64_after_hwframe+0x77/0x7f >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> RIP: 0033:0x7fe50bf9ce59 >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48 >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> RSP: 002b:00007fff8a02cc38 EFLAGS: 00000246 ORIG_RAX: 00000000000001b4 >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> RAX: 0000000000000000 RBX: 00007fe50c217da0 RCX: 00007fe50bf9ce59 >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> RDX: 0000000000000000 RSI: 000000000000001e RDI: 0000000000000003 >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> RBP: 00007fe50c217da0 R08: 00007fe50c216038 R09: 0000000000000000 >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> R10: 000000000003fdd4 R11: 0000000000000246 R12: 0000000000010018 >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> R13: 00007fe50c215fac R14: 00007fe50c215fa8 R15: 00007fe50c215fa0 >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> </TASK> >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> Allocated by task 5813: >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> kasan_save_stack mm/kasan/common.c:57 [inline] >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> kasan_save_track+0x3e/0x80 mm/kasan/common.c:78 >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> unpoison_slab_object mm/kasan/common.c:340 [inline] >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> __kasan_slab_alloc+0x6c/0x80 mm/kasan/common.c:366 >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> kasan_slab_alloc include/linux/kasan.h:253 [inline] >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> slab_post_alloc_hook mm/slub.c:4569 [inline] >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> slab_alloc_node mm/slub.c:4898 [inline] >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> kmem_cache_alloc_node_noprof+0x384/0x690 mm/slub.c:4950 >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> __alloc_skb+0x1d0/0x7d0 net/core/skbuff.c:702 >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> netlink_sendmsg+0x5d4/0xb40 net/netlink/af_netlink.c:1869 >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> sock_sendmsg_nosec net/socket.c:787 [inline] >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> __sock_sendmsg net/socket.c:802 [inline] >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> ____sys_sendmsg+0x972/0x9f0 net/socket.c:2698 >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> ___sys_sendmsg+0x2a5/0x360 net/socket.c:2752 >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> __sys_sendmsg net/socket.c:2784 [inline] >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> __do_sys_sendmsg net/socket.c:2789 [inline] >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> __se_sys_sendmsg net/socket.c:2787 [inline] >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> __x64_sys_sendmsg+0x1bd/0x2a0 net/socket.c:2787 >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> do_syscall_64+0x15f/0xf80 arch/x86/entry/syscall_64.c:94 >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> entry_SYSCALL_64_after_hwframe+0x77/0x7f >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> Freed by task 5813: >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> kasan_save_stack mm/kasan/common.c:57 [inline] >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> kasan_save_track+0x3e/0x80 mm/kasan/common.c:78 >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> kasan_save_free_info+0x46/0x50 mm/kasan/generic.c:584 >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> poison_slab_object mm/kasan/common.c:253 [inline] >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> __kasan_slab_free+0x5c/0x80 mm/kasan/common.c:285 >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> kasan_slab_free include/linux/kasan.h:235 [inline] >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> slab_free_hook mm/slub.c:2689 [inline] >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> slab_free mm/slub.c:6250 [inline] >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> kmem_cache_free+0x182/0x650 mm/slub.c:6377 >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> netlink_unicast_kernel net/netlink/af_netlink.c:1319 [inline] >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> netlink_unicast+0x764/0x8e0 net/netlink/af_netlink.c:1344 >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> netlink_sendmsg+0x813/0xb40 net/netlink/af_netlink.c:1894 >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> sock_sendmsg_nosec net/socket.c:787 [inline] >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> __sock_sendmsg net/socket.c:802 [inline] >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> ____sys_sendmsg+0x972/0x9f0 net/socket.c:2698 >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> ___sys_sendmsg+0x2a5/0x360 net/socket.c:2752 >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> __sys_sendmsg net/socket.c:2784 [inline] >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> __do_sys_sendmsg net/socket.c:2789 [inline] >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> __se_sys_sendmsg net/socket.c:2787 [inline] >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> __x64_sys_sendmsg+0x1bd/0x2a0 net/socket.c:2787 >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> do_syscall_64+0x15f/0xf80 arch/x86/entry/syscall_64.c:94 >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> entry_SYSCALL_64_after_hwframe+0x77/0x7f >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> The buggy address belongs to the object at ffff888167305380 >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> which belongs to the cache skbuff_head_cache of size 240 >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> The buggy address is located 24 bytes inside of >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> freed 240-byte region [ffff888167305380, ffff888167305470) >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> The buggy address belongs to the physical page: >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x167304 >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> head: order:1 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0 >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> flags: 0x57ff00000000040(head|node=1|zone=2|lastcpupid=0x7ff) >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> page_type: f5(slab) >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> raw: 057ff00000000040 ffff888160416dc0 dead000000000100 dead000000000122 >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> raw: 0000000000000000 0000000800150015 00000000f5000000 0000000000000000 >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> head: 057ff00000000040 ffff888160416dc0 dead000000000100 dead000000000122 >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> head: 0000000000000000 0000000800150015 00000000f5000000 0000000000000000 >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> head: 057ff00000000001 ffffffffffffff81 00000000ffffffff 00000000ffffffff >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> head: ffffffffffffffff 0000000000000000 00000000ffffffff 0000000000000002 >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> page dumped because: kasan: bad access detected >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> page_owner tracks the page as allocated >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> page last allocated via order 1, migratetype Unmovable, gfp_mask 0xd20c0(__GFP_IO|__GFP_FS|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC), pid 5813, tgid 5812 (syz.0.17), ts 64859679564, free_ts 63312613640 >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> set_page_owner include/linux/page_owner.h:32 [inline] >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> post_alloc_hook+0x22d/0x280 mm/page_alloc.c:1858 >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> prep_new_page mm/page_alloc.c:1866 [inline] >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> get_page_from_freelist+0x24ba/0x2540 mm/page_alloc.c:3946 >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> __alloc_frozen_pages_noprof+0x18d/0x380 mm/page_alloc.c:5226 >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> alloc_slab_page mm/slub.c:3278 [inline] >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> allocate_slab+0x77/0x660 mm/slub.c:3467 >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> new_slab mm/slub.c:3525 [inline] >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> refill_objects+0x339/0x3d0 mm/slub.c:7271 >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> refill_sheaf mm/slub.c:2816 [inline] >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> __pcs_replace_empty_main+0x321/0x720 mm/slub.c:4651 >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> alloc_from_pcs mm/slub.c:4749 [inline] >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> slab_alloc_node mm/slub.c:4883 [inline] >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> kmem_cache_alloc_node_noprof+0x441/0x690 mm/slub.c:4950 >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> __alloc_skb+0x1d0/0x7d0 net/core/skbuff.c:702 >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> netlink_sendmsg+0x5d4/0xb40 net/netlink/af_netlink.c:1869 >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> sock_sendmsg_nosec net/socket.c:787 [inline] >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> __sock_sendmsg net/socket.c:802 [inline] >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> ____sys_sendmsg+0x972/0x9f0 net/socket.c:2698 >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> ___sys_sendmsg+0x2a5/0x360 net/socket.c:2752 >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> __sys_sendmsg net/socket.c:2784 [inline] >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> __do_sys_sendmsg net/socket.c:2789 [inline] >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> __se_sys_sendmsg net/socket.c:2787 [inline] >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> __x64_sys_sendmsg+0x1bd/0x2a0 net/socket.c:2787 >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> do_syscall_64+0x15f/0xf80 arch/x86/entry/syscall_64.c:94 >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> entry_SYSCALL_64_after_hwframe+0x77/0x7f >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> page last free pid 15 tgid 15 stack trace: >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> reset_page_owner include/linux/page_owner.h:25 [inline] >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> __free_pages_prepare mm/page_alloc.c:1402 [inline] >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> __free_frozen_pages+0xbc7/0xd30 mm/page_alloc.c:2943 >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> rcu_do_batch kernel/rcu/tree.c:2617 [inline] >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> rcu_core+0x7cd/0x1070 kernel/rcu/tree.c:2869 >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> handle_softirqs+0x22a/0x840 kernel/softirq.c:622 >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> run_ksoftirqd+0x36/0x60 kernel/softirq.c:1076 >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> smpboot_thread_fn+0x541/0xa50 kernel/smpboot.c:160 >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> kthread+0x389/0x470 kernel/kthread.c:436 >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> ret_from_fork+0x514/0xb70 arch/x86/kernel/process.c:158 >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245 >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> Memory state around the buggy address: >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> ffff888167305280: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fc fc >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> ffff888167305300: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> >ffff888167305380: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> ^ >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> ffff888167305400: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fc fc >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> ffff888167305480: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> ================================================================== >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> *** >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> KASAN: slab-use-after-free Write in sk_skb_reason_drop >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> tree: net >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> URL: https://kernel.googlesource.com/pub/scm/linux/kernel/git/netdev/net.git >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> base: 18014147d3ee7831dce53fe65d7fc8d428b02552 >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> arch: amd64 >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> compiler: Debian clang version 21.1.8 (++20251221033036+2078da43e25a-1~exp1~20251221153213.50), Debian LLD 21.1.8 >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> config: https://ci.syzbot.org/builds/90c5185d-0dad-4c34-a563-4253ebb12eb2/config >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> syz repro: https://ci.syzbot.org/findings/c87569e1-d26e-4670-a17b-9f2f64a5af67/syz_repro >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> ================================================================== >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> BUG: KASAN: slab-use-after-free in instrument_atomic_read_write include/linux/instrumented.h:112 [inline] >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> BUG: KASAN: slab-use-after-free in atomic_fetch_sub_release include/linux/atomic/atomic-instrumented.h:400 [inline] >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> BUG: KASAN: slab-use-after-free in __refcount_sub_and_test include/linux/refcount.h:389 [inline] >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> BUG: KASAN: slab-use-after-free in __refcount_dec_and_test include/linux/refcount.h:432 [inline] >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> BUG: KASAN: slab-use-after-free in refcount_dec_and_test include/linux/refcount.h:450 [inline] >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> BUG: KASAN: slab-use-after-free in skb_unref include/linux/skbuff.h:1292 [inline] >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> BUG: KASAN: slab-use-after-free in __sk_skb_reason_drop net/core/skbuff.c:1212 [inline] >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> BUG: KASAN: slab-use-after-free in sk_skb_reason_drop+0x37/0x110 net/core/skbuff.c:1240 >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> Write of size 4 at addr ffff8881178efee4 by task syz.1.18/5873 >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> CPU: 0 UID: 0 PID: 5873 Comm: syz.1.18 Not tainted syzkaller #0 PREEMPT(full) >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014 >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> Call Trace: >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> <TASK> >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> dump_stack_lvl+0xe8/0x150 lib/dump_stack.c:120 >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> print_address_description+0x55/0x1e0 mm/kasan/report.c:378 >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> print_report+0x58/0x70 mm/kasan/report.c:482 >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> kasan_report+0x117/0x150 mm/kasan/report.c:595 >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> check_region_inline mm/kasan/generic.c:-1 [inline] >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> kasan_check_range+0x264/0x2c0 mm/kasan/generic.c:200 >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> instrument_atomic_read_write include/linux/instrumented.h:112 [inline] >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> atomic_fetch_sub_release include/linux/atomic/atomic-instrumented.h:400 [inline] >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> __refcount_sub_and_test include/linux/refcount.h:389 [inline] >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> __refcount_dec_and_test include/linux/refcount.h:432 [inline] >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> refcount_dec_and_test include/linux/refcount.h:450 [inline] >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> skb_unref include/linux/skbuff.h:1292 [inline] >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> __sk_skb_reason_drop net/core/skbuff.c:1212 [inline] >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> sk_skb_reason_drop+0x37/0x110 net/core/skbuff.c:1240 >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> kfree_skb_reason include/linux/skbuff.h:1322 [inline] >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> kfree_skb include/linux/skbuff.h:1331 [inline] >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> netlink_release+0x133a/0x1ad0 net/netlink/af_netlink.c:770 >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> __sock_release net/socket.c:722 [inline] >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> sock_close+0xc3/0x240 net/socket.c:1514 >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> __fput+0x44f/0xa60 fs/file_table.c:510 >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> task_work_run+0x1d9/0x270 kernel/task_work.c:233 >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> resume_user_mode_work include/linux/resume_user_mode.h:50 [inline] >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> __exit_to_user_mode_loop kernel/entry/common.c:67 [inline] >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> exit_to_user_mode_loop+0xf3/0x4d0 kernel/entry/common.c:98 >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> __exit_to_user_mode_prepare include/linux/irq-entry-common.h:207 [inline] >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> syscall_exit_to_user_mode_prepare include/linux/irq-entry-common.h:230 [inline] >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> syscall_exit_to_user_mode include/linux/entry-common.h:318 [inline] >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> do_syscall_64+0x33e/0xf80 arch/x86/entry/syscall_64.c:100 >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> entry_SYSCALL_64_after_hwframe+0x77/0x7f >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> RIP: 0033:0x7fd4d139ce59 >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48 >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> RSP: 002b:00007fff722ecbf8 EFLAGS: 00000246 ORIG_RAX: 00000000000001b4 >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> RAX: 0000000000000000 RBX: 00007fff722ecce0 RCX: 00007fd4d139ce59 >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> RDX: 0000000000000000 RSI: 000000000000001e RDI: 0000000000000003 >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> RBP: 0000000000012825 R08: 0000000000000001 R09: 0000000000000000 >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> R10: 0000001b32e20000 R11: 0000000000000246 R12: 00007fff722ecd20 >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> R13: 00007fd4d1615fac R14: 0000000000012859 R15: 00007fd4d1615fa0 >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> </TASK> >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> Allocated by task 5874: >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> kasan_save_stack mm/kasan/common.c:57 [inline] >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> kasan_save_track+0x3e/0x80 mm/kasan/common.c:78 >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> unpoison_slab_object mm/kasan/common.c:340 [inline] >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> __kasan_mempool_unpoison_object+0xa3/0x130 mm/kasan/common.c:564 >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> kasan_mempool_unpoison_object include/linux/kasan.h:391 [inline] >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> napi_skb_cache_get+0x3c8/0x780 net/core/skbuff.c:306 >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> __alloc_skb+0x19a/0x7d0 net/core/skbuff.c:696 >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> netlink_sendmsg+0x5d4/0xb40 net/netlink/af_netlink.c:1869 >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> sock_sendmsg_nosec net/socket.c:787 [inline] >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> __sock_sendmsg net/socket.c:802 [inline] >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> __sys_sendto+0x672/0x710 net/socket.c:2265 >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> __do_sys_sendto net/socket.c:2272 [inline] >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> __se_sys_sendto net/socket.c:2268 [inline] >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> __x64_sys_sendto+0xde/0x100 net/socket.c:2268 >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> do_syscall_64+0x15f/0xf80 arch/x86/entry/syscall_64.c:94 >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> entry_SYSCALL_64_after_hwframe+0x77/0x7f >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> Freed by task 5874: >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> kasan_save_stack mm/kasan/common.c:57 [inline] >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> kasan_save_track+0x3e/0x80 mm/kasan/common.c:78 >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> kasan_save_free_info+0x46/0x50 mm/kasan/generic.c:584 >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> poison_slab_object mm/kasan/common.c:253 [inline] >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> __kasan_slab_free+0x5c/0x80 mm/kasan/common.c:285 >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> kasan_slab_free include/linux/kasan.h:235 [inline] >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> slab_free_hook mm/slub.c:2689 [inline] >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> slab_free mm/slub.c:6250 [inline] >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> kmem_cache_free+0x182/0x650 mm/slub.c:6377 >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> netlink_unicast_kernel net/netlink/af_netlink.c:1319 [inline] >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> netlink_unicast+0x764/0x8e0 net/netlink/af_netlink.c:1344 >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> netlink_sendmsg+0x813/0xb40 net/netlink/af_netlink.c:1894 >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> sock_sendmsg_nosec net/socket.c:787 [inline] >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> __sock_sendmsg net/socket.c:802 [inline] >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> __sys_sendto+0x672/0x710 net/socket.c:2265 >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> __do_sys_sendto net/socket.c:2272 [inline] >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> __se_sys_sendto net/socket.c:2268 [inline] >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> __x64_sys_sendto+0xde/0x100 net/socket.c:2268 >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> do_syscall_64+0x15f/0xf80 arch/x86/entry/syscall_64.c:94 >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> entry_SYSCALL_64_after_hwframe+0x77/0x7f >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> The buggy address belongs to the object at ffff8881178efe00 >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> which belongs to the cache skbuff_head_cache of size 240 >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> The buggy address is located 228 bytes inside of >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> freed 240-byte region [ffff8881178efe00, ffff8881178efef0) >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> The buggy address belongs to the physical page: >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1178ee >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> head: order:1 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0 >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> flags: 0x17ff00000000040(head|node=0|zone=2|lastcpupid=0x7ff) >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> page_type: f5(slab) >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> raw: 017ff00000000040 ffff888160416c80 dead000000000122 0000000000000000 >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> raw: 0000000000000000 0000000800150015 00000000f5000000 0000000000000000 >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> head: 017ff00000000040 ffff888160416c80 dead000000000122 0000000000000000 >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> head: 0000000000000000 0000000800150015 00000000f5000000 0000000000000000 >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> head: 017ff00000000001 ffffffffffffff81 00000000ffffffff 00000000ffffffff >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> head: ffffffffffffffff 0000000000000000 00000000ffffffff 0000000000000002 >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> page dumped because: kasan: bad access detected >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> page_owner tracks the page as allocated >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> page last allocated via order 1, migratetype Unmovable, gfp_mask 0xd20c0(__GFP_IO|__GFP_FS|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC), pid 5050, tgid 5050 (klogd), ts 75887265953, free_ts 75876344896 >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> set_page_owner include/linux/page_owner.h:32 [inline] >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> post_alloc_hook+0x22d/0x280 mm/page_alloc.c:1858 >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> prep_new_page mm/page_alloc.c:1866 [inline] >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> get_page_from_freelist+0x24ba/0x2540 mm/page_alloc.c:3946 >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> __alloc_frozen_pages_noprof+0x18d/0x380 mm/page_alloc.c:5226 >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> alloc_slab_page mm/slub.c:3278 [inline] >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> allocate_slab+0x77/0x660 mm/slub.c:3467 >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> new_slab mm/slub.c:3525 [inline] >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> refill_objects+0x339/0x3d0 mm/slub.c:7271 >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> refill_sheaf mm/slub.c:2816 [inline] >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> __pcs_replace_empty_main+0x321/0x720 mm/slub.c:4651 >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> alloc_from_pcs mm/slub.c:4749 [inline] >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> slab_alloc_node mm/slub.c:4883 [inline] >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> kmem_cache_alloc_node_noprof+0x441/0x690 mm/slub.c:4950 >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> __alloc_skb+0x1d0/0x7d0 net/core/skbuff.c:702 >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> alloc_skb include/linux/skbuff.h:1383 [inline] >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> alloc_skb_with_frags+0xc8/0x760 net/core/skbuff.c:6743 >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> sock_alloc_send_pskb+0x878/0x990 net/core/sock.c:2998 >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> unix_dgram_sendmsg+0x460/0x18d0 net/unix/af_unix.c:2141 >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> sock_sendmsg_nosec net/socket.c:787 [inline] >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> __sock_sendmsg net/socket.c:802 [inline] >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> __sys_sendto+0x672/0x710 net/socket.c:2265 >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> __do_sys_sendto net/socket.c:2272 [inline] >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> __se_sys_sendto net/socket.c:2268 [inline] >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> __x64_sys_sendto+0xde/0x100 net/socket.c:2268 >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> do_syscall_64+0x15f/0xf80 arch/x86/entry/syscall_64.c:94 >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> entry_SYSCALL_64_after_hwframe+0x77/0x7f >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> page last free pid 0 tgid 0 stack trace: >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> reset_page_owner include/linux/page_owner.h:25 [inline] >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> __free_pages_prepare mm/page_alloc.c:1402 [inline] >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> __free_frozen_pages+0xbc7/0xd30 mm/page_alloc.c:2943 >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> rcu_do_batch kernel/rcu/tree.c:2617 [inline] >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> rcu_core+0x7cd/0x1070 kernel/rcu/tree.c:2869 >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> handle_softirqs+0x22a/0x840 kernel/softirq.c:622 >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> __do_softirq kernel/softirq.c:656 [inline] >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> invoke_softirq kernel/softirq.c:496 [inline] >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> __irq_exit_rcu+0xca/0x220 kernel/softirq.c:735 >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> irq_exit_rcu+0x9/0x30 kernel/softirq.c:752 >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1061 [inline] >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> sysvec_apic_timer_interrupt+0xa6/0xc0 arch/x86/kernel/apic/apic.c:1061 >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:697 >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> Memory state around the buggy address: >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> ffff8881178efd80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> ffff8881178efe00: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> >ffff8881178efe80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fc fc >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> ^ >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> ffff8881178eff00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> ffff8881178eff80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> ================================================================== >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> *** >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> If these findings have caused you to resend the series or submit a >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> separate fix, please add the following tag to your commit message: >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> Tested-by: [email protected] >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> --- >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> This report is generated by a bot. It may contain errors. >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> syzbot ci engineers can be reached at [email protected]. >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> To test a patch for this bug, please reply with `#syz test` >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> (should be on a separate line). >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> The patch should be attached to the email. >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> Note: arguments like custom git repos and branches are not supported. >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> The email will later be sent to: >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> [[email protected] [email protected] [email protected] [email protected] [email protected] [email protected] [email protected] [email protected] [email protected] [email protected] [email protected] [email protected]] >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> If the report looks fine to you, reply with: >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> #syz upstream >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> If the report is a false positive, reply with >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> #syz invalid >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> -- >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> You received this message because you are subscribed to the Google Groups "syzkaller-upstream-moderation" group. >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> To view this discussion visit https://groups.google.com/d/msgid/syzkaller-upstream-moderation/6a185386.99a1ea37.128423.0001.GAE%40google.com. >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> -- >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> You received this message because you are subscribed to the Google Groups "syzkaller-upstream-moderation" group. >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> To view this discussion visit https://groups.google.com/d/msgid/syzkaller-upstream-moderation/6a18555e.e783d627.6395.0001.GAE%40google.com. >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> I see the command but can't find the corresponding bug. >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> The email is sent to [email protected] address >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> but the HASH does not correspond to any known bug. >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> Please double check the address. >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> I see the command but can't find the corresponding bug. >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> The email is sent to [email protected] address >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> but the HASH does not correspond to any known bug. >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> Please double check the address. >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> -- >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> You received this message because you are subscribed to the Google Groups "syzkaller-upstream-moderation" group. >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> To view this discussion visit https://groups.google.com/d/msgid/syzkaller-upstream-moderation/6a185561.7f45b5d1.9d2a9.0005.GAE%40google.com. >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> I see the command but can't find the corresponding bug. >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> The email is sent to [email protected] address >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> but the HASH does not correspond to any known bug. >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> Please double check the address. >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> I see the command but can't find the corresponding bug. >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> The email is sent to [email protected] address >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> but the HASH does not correspond to any known bug. >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> Please double check the address. >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> -- >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> You received this message because you are subscribed to the Google Groups "syzkaller-upstream-moderation" group. >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> To view this discussion visit https://groups.google.com/d/msgid/syzkaller-upstream-moderation/6a185564.7f45b5d1.9d2a9.0007.GAE%40google.com. >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> I see the command but can't find the corresponding bug. >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> The email is sent to [email protected] address >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> but the HASH does not correspond to any known bug. >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> Please double check the address. >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> -- >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> You received this message because you are subscribed to the Google Groups "syzkaller-upstream-moderation" group. >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> To view this discussion visit https://groups.google.com/d/msgid/syzkaller-upstream-moderation/6a185566.586c836d.2e3ab2.0005.GAE%40google.com. >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> I see the command but can't find the corresponding bug. >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> The email is sent to [email protected] address >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> but the HASH does not correspond to any known bug. >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> Please double check the address. >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> I see the command but can't find the corresponding bug. >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> The email is sent to [email protected] address >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> but the HASH does not correspond to any known bug. >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> Please double check the address. >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> -- >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> You received this message because you are subscribed to the Google Groups "syzkaller-upstream-moderation" group. >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> To view this discussion visit https://groups.google.com/d/msgid/syzkaller-upstream-moderation/6a185569.e783d627.6395.0015.GAE%40google.com. >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> I see the command but can't find the corresponding bug. >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> The email is sent to [email protected] address >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> but the HASH does not correspond to any known bug. >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> Please double check the address. >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> I see the command but can't find the corresponding bug. >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> The email is sent to [email protected] address >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> but the HASH does not correspond to any known bug. >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> Please double check the address. >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> I see the command but can't find the corresponding bug. >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> The email is sent to [email protected] address >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> but the HASH does not correspond to any known bug. >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> Please double check the address. >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> I see the command but can't find the corresponding bug. >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> The email is sent to [email protected] address >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> but the HASH does not correspond to any known bug. >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> Please double check the address. >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>>>>>>>>>>>>>>>> I see the command but can't find the corresponding bug. >>>>>>>>>>>>>>>>>>>>>>>>>>>>>> The email is sent to [email protected] address >>>>>>>>>>>>>>>>>>>>>>>>>>>>>> but the HASH does not correspond to any known bug. >>>>>>>>>>>>>>>>>>>>>>>>>>>>>> Please double check the address. >>>>>>>>>>>>>>>>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>>>>>>>>>>>>>>> I see the command but can't find the corresponding bug. >>>>>>>>>>>>>>>>>>>>>>>>>>>>> The email is sent to [email protected] address >>>>>>>>>>>>>>>>>>>>>>>>>>>>> but the HASH does not correspond to any known bug. >>>>>>>>>>>>>>>>>>>>>>>>>>>>> Please double check the address. >>>>>>>>>>>>>>>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>>>>>>>>>>>>>> I see the command but can't find the corresponding bug. >>>>>>>>>>>>>>>>>>>>>>>>>>>> The email is sent to [email protected] address >>>>>>>>>>>>>>>>>>>>>>>>>>>> but the HASH does not correspond to any known bug. >>>>>>>>>>>>>>>>>>>>>>>>>>>> Please double check the address. >>>>>>>>>>>>>>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>>>>>>>>>>>>> I see the command but can't find the corresponding bug. >>>>>>>>>>>>>>>>>>>>>>>>>>> The email is sent to [email protected] address >>>>>>>>>>>>>>>>>>>>>>>>>>> but the HASH does not correspond to any known bug. >>>>>>>>>>>>>>>>>>>>>>>>>>> Please double check the address. >>>>>>>>>>>>>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>>>>>>>>>>>> I see the command but can't find the corresponding bug. >>>>>>>>>>>>>>>>>>>>>>>>>> The email is sent to [email protected] address >>>>>>>>>>>>>>>>>>>>>>>>>> but the HASH does not correspond to any known bug. >>>>>>>>>>>>>>>>>>>>>>>>>> Please double check the address. >>>>>>>>>>>>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>>>>>>>>>>> I see the command but can't find the corresponding bug. >>>>>>>>>>>>>>>>>>>>>>>>> The email is sent to [email protected] address >>>>>>>>>>>>>>>>>>>>>>>>> but the HASH does not correspond to any known bug. >>>>>>>>>>>>>>>>>>>>>>>>> Please double check the address. >>>>>>>>>>>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>>>>>>>>>> I see the command but can't find the corresponding bug. >>>>>>>>>>>>>>>>>>>>>>>> The email is sent to [email protected] address >>>>>>>>>>>>>>>>>>>>>>>> but the HASH does not correspond to any known bug. >>>>>>>>>>>>>>>>>>>>>>>> Please double check the address. >>>>>>>>>>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>>>>>>>>> I see the command but can't find the corresponding bug. >>>>>>>>>>>>>>>>>>>>>>> The email is sent to [email protected] address >>>>>>>>>>>>>>>>>>>>>>> but the HASH does not correspond to any known bug. >>>>>>>>>>>>>>>>>>>>>>> Please double check the address. >>>>>>>>>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>>>>>>>> I see the command but can't find the corresponding bug. >>>>>>>>>>>>>>>>>>>>>> The email is sent to [email protected] address >>>>>>>>>>>>>>>>>>>>>> but the HASH does not correspond to any known bug. >>>>>>>>>>>>>>>>>>>>>> Please double check the address. >>>>>>>>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>>>>>>> I see the command but can't find the corresponding bug. >>>>>>>>>>>>>>>>>>>>> The email is sent to [email protected] address >>>>>>>>>>>>>>>>>>>>> but the HASH does not correspond to any known bug. >>>>>>>>>>>>>>>>>>>>> Please double check the address. >>>>>>>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>>>>>> I see the command but can't find the corresponding bug. >>>>>>>>>>>>>>>>>>>> The email is sent to [email protected] address >>>>>>>>>>>>>>>>>>>> but the HASH does not correspond to any known bug. >>>>>>>>>>>>>>>>>>>> Please double check the address. >>>>>>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>>>>> I see the command but can't find the corresponding bug. >>>>>>>>>>>>>>>>>>> The email is sent to [email protected] address >>>>>>>>>>>>>>>>>>> but the HASH does not correspond to any known bug. >>>>>>>>>>>>>>>>>>> Please double check the address. >>>>>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>>>> I see the command but can't find the corresponding bug. >>>>>>>>>>>>>>>>>> The email is sent to [email protected] address >>>>>>>>>>>>>>>>>> but the HASH does not correspond to any known bug. >>>>>>>>>>>>>>>>>> Please double check the address. >>>>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>>> I see the command but can't find the corresponding bug. >>>>>>>>>>>>>>>>> The email is sent to [email protected] address >>>>>>>>>>>>>>>>> but the HASH does not correspond to any known bug. >>>>>>>>>>>>>>>>> Please double check the address. >>>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>> I see the command but can't find the corresponding bug. >>>>>>>>>>>>>>>> The email is sent to [email protected] address >>>>>>>>>>>>>>>> but the HASH does not correspond to any known bug. >>>>>>>>>>>>>>>> Please double check the address. >>>>>>>>>>>>>>>> >>>>>>>>>>>>>>> >>>>>>>>>>>>>>> I see the command but can't find the corresponding bug. >>>>>>>>>>>>>>> The email is sent to [email protected] address >>>>>>>>>>>>>>> but the HASH does not correspond to any known bug. >>>>>>>>>>>>>>> Please double check the address. >>>>>>>>>>>>>>> >>>>>>>>>>>>>> >>>>>>>>>>>>>> I see the command but can't find the corresponding bug. >>>>>>>>>>>>>> The email is sent to [email protected] address >>>>>>>>>>>>>> but the HASH does not correspond to any known bug. >>>>>>>>>>>>>> Please double check the address. >>>>>>>>>>>>>> >>>>>>>>>>>>> >>>>>>>>>>>>> I see the command but can't find the corresponding bug. >>>>>>>>>>>>> The email is sent to [email protected] address >>>>>>>>>>>>> but the HASH does not correspond to any known bug. >>>>>>>>>>>>> Please double check the address. >>>>>>>>>>>>> >>>>>>>>>>>> >>>>>>>>>>>> I see the command but can't find the corresponding bug. >>>>>>>>>>>> The email is sent to [email protected] address >>>>>>>>>>>> but the HASH does not correspond to any known bug. >>>>>>>>>>>> Please double check the address. >>>>>>>>>>>> >>>>>>>>>>> >>>>>>>>>>> I see the command but can't find the corresponding bug. >>>>>>>>>>> The email is sent to [email protected] address >>>>>>>>>>> but the HASH does not correspond to any known bug. >>>>>>>>>>> Please double check the address. >>>>>>>>>>> >>>>>>>>>> >>>>>>>>>> I see the command but can't find the corresponding bug. >>>>>>>>>> The email is sent to [email protected] address >>>>>>>>>> but the HASH does not correspond to any known bug. >>>>>>>>>> Please double check the address. >>>>>>>>>> >>>>>>>>> >>>>>>>>> I see the command but can't find the corresponding bug. >>>>>>>>> The email is sent to [email protected] address >>>>>>>>> but the HASH does not correspond to any known bug. >>>>>>>>> Please double check the address. >>>>>>>>> >>>>>>>> >>>>>>>> I see the command but can't find the corresponding bug. >>>>>>>> The email is sent to [email protected] address >>>>>>>> but the HASH does not correspond to any known bug. >>>>>>>> Please double check the address. >>>>>>>> >>>>>>> >>>>>>> I see the command but can't find the corresponding bug. >>>>>>> The email is sent to [email protected] address >>>>>>> but the HASH does not correspond to any known bug. >>>>>>> Please double check the address. >>>>>>> >>>>>> >>>>>> I see the command but can't find the corresponding bug. >>>>>> The email is sent to [email protected] address >>>>>> but the HASH does not correspond to any known bug. >>>>>> Please double check the address. >>>>>> >>>>> >>>>> I see the command but can't find the corresponding bug. >>>>> The email is sent to [email protected] address >>>>> but the HASH does not correspond to any known bug. >>>>> Please double check the address. >>>>> >>>> >>>> I see the command but can't find the corresponding bug. >>>> The email is sent to [email protected] address >>>> but the HASH does not correspond to any known bug. >>>> Please double check the address. >>>> >>> >>> I see the command but can't find the corresponding bug. >>> The email is sent to [email protected] address >>> but the HASH does not correspond to any known bug. >>> Please double check the address. >>> >> >> I see the command but can't find the corresponding bug. >> The email is sent to [email protected] address >> but the HASH does not correspond to any known bug. >> Please double check the address. >> > > I see the command but can't find the corresponding bug. > The email is sent to [email protected] address > but the HASH does not correspond to any known bug. > Please double check the address. > I see the command but can't find the corresponding bug. The email is sent to [email protected] address but the HASH does not correspond to any known bug. Please double check the address.