Re: Re: [moderation/CI] Re: wifi: mac80211: guard drv_net_setup_tc() against unbound AP_VLAN sdata
syzbot ci <[email protected]>
| Newsgroups | dev.linux.lists.syzbot |
|---|---|
| Message-ID | <[email protected]> |
> #syz upstream Failed to process the command. Contact [email protected]. > > On Wed, Aug 12, 2026 at 3:36 AM syzbot ci > <[email protected]> wrote: >> >> syzbot ci has tested the following series >> >> [v1] wifi: mac80211: guard drv_net_setup_tc() against unbound AP_VLAN sdata >> https://lore.kernel.org/all/[email protected] >> * [PATCH] wifi: mac80211: guard drv_net_setup_tc() against unbound AP_VLAN sdata >> >> and found the following issue: >> WARNING in ieee80211_netdev_setup_tc >> >> Full report is available here: >> https://ci.syzbot.org/series/db0f7870-cfa6-4a9b-b78b-225ce86c2a89 >> >> *** >> >> WARNING in ieee80211_netdev_setup_tc >> >> tree: wireless-next >> URL: https://kernel.googlesource.com/pub/scm/linux/kernel/git/wireless/wireless-next.git >> base: ca800a9302764c445de0da0e84d2252400a770ee >> arch: amd64 >> compiler: Debian clang version 22.1.8 (++20260613092233+e80beda6e255-1~exp1~20260613092250.77), Debian LLD 22.1.8 >> config: https://ci.syzbot.org/builds/e40f4f29-7949-48eb-9c12-006be4046454/config >> syz repro: https://ci.syzbot.org/findings/4c184dbd-070a-4d74-8afd-085fa1b5f0a2/syz_repro >> >> ------------[ cut here ]------------ >> syzkaller0: Failed check-sdata-in-driver check, flags: 0x0 >> WARNING: net/mac80211/driver-ops.h:1719 at drv_net_setup_tc net/mac80211/driver-ops.h:1719 [inline], CPU#1: syz.1.18/5848 >> WARNING: net/mac80211/driver-ops.h:1719 at ieee80211_netdev_setup_tc+0x2f0/0x550 net/mac80211/iface.c:938, CPU#1: syz.1.18/5848 >> Modules linked in: >> CPU: 1 UID: 0 PID: 5848 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 >> RIP: 0010:drv_net_setup_tc net/mac80211/driver-ops.h:1719 [inline] >> RIP: 0010:ieee80211_netdev_setup_tc+0x345/0x550 net/mac80211/iface.c:938 >> Code: 48 8b 02 48 8d b0 20 01 00 00 48 85 c0 48 0f 44 f1 0f b6 04 2b 84 c0 4d 89 ee 0f 85 ad 00 00 00 49 8d 84 24 68 0a 00 00 8b 10 <67> 48 0f b9 3a e9 16 fe ff ff e8 cc ee 86 f6 90 0f 0b 90 e9 75 fe >> RSP: 0018:ffffc900042ff078 EFLAGS: 00010246 >> RAX: ffff8881709e9928 RBX: 1ffff1102e13d325 RCX: ffff8881709e9938 >> RDX: 0000000000000000 RSI: ffff8881709e8120 RDI: ffffffff9068ed60 >> RBP: dffffc0000000000 R08: ffffc900042ff157 R09: 0000000000000000 >> R10: ffffc900042ff128 R11: ffffffff8b3fff60 R12: ffff8881709e8ec0 >> R13: ffffc900042ff120 R14: ffffc900042ff120 R15: ffff8881709e8000 >> FS: 00007f5cd6df16c0(0000) GS:ffff8882a8f66000(0000) knlGS:0000000000000000 >> CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 >> CR2: 00002000000012c0 CR3: 000000016f0fc000 CR4: 00000000000006f0 >> Call Trace: >> <TASK> >> tcf_block_offload_cmd+0x235/0x3b0 net/sched/cls_api.c:838 >> tcf_block_offload_bind net/sched/cls_api.c:875 [inline] >> tcf_block_get_ext+0xfe0/0x17d0 net/sched/cls_api.c:1498 >> tcf_block_get+0x67/0xa0 net/sched/cls_api.c:1543 >> multiq_init+0x72/0x2b0 net/sched/sch_multiq.c:246 >> qdisc_create+0x7b5/0xf00 net/sched/sch_api.c:1337 >> __tc_modify_qdisc net/sched/sch_api.c:1771 [inline] >> tc_modify_qdisc+0x17af/0x2390 net/sched/sch_api.c:1835 >> rtnetlink_rcv_msg+0x7b9/0xc00 net/core/rtnetlink.c:7121 >> netlink_rcv_skb+0x226/0x4a0 net/netlink/af_netlink.c:2556 >> netlink_unicast_kernel net/netlink/af_netlink.c:1319 [inline] >> netlink_unicast+0x7bb/0x940 net/netlink/af_netlink.c:1345 >> netlink_sendmsg+0x813/0xb40 net/netlink/af_netlink.c:1900 >> sock_sendmsg_nosec+0x13a/0x180 net/socket.c:775 >> __sock_sendmsg net/socket.c:790 [inline] >> ____sys_sendmsg+0x54e/0x850 net/socket.c:2684 >> ___sys_sendmsg+0x2a5/0x360 net/socket.c:2738 >> __sys_sendmsg net/socket.c:2770 [inline] >> __do_sys_sendmsg net/socket.c:2775 [inline] >> __se_sys_sendmsg net/socket.c:2773 [inline] >> __x64_sys_sendmsg+0x1b1/0x290 net/socket.c:2773 >> do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] >> do_syscall_64+0x174/0x580 arch/x86/entry/syscall_64.c:94 >> entry_SYSCALL_64_after_hwframe+0x77/0x7f >> RIP: 0033:0x7f5cd5f9e0d9 >> 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:00007f5cd6df1028 EFLAGS: 00000246 ORIG_RAX: 000000000000002e >> RAX: ffffffffffffffda RBX: 00007f5cd6225fa0 RCX: 00007f5cd5f9e0d9 >> RDX: 0000000000000000 RSI: 00002000000012c0 RDI: 0000000000000004 >> RBP: 00007f5cd6035024 R08: 0000000000000000 R09: 0000000000000000 >> R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 >> R13: 00007f5cd6226038 R14: 00007f5cd6225fa0 R15: 00007ffc6aba2558 >> </TASK> >> ---------------- >> Code disassembly (best guess): >> 0: 48 8b 02 mov (%rdx),%rax >> 3: 48 8d b0 20 01 00 00 lea 0x120(%rax),%rsi >> a: 48 85 c0 test %rax,%rax >> d: 48 0f 44 f1 cmove %rcx,%rsi >> 11: 0f b6 04 2b movzbl (%rbx,%rbp,1),%eax >> 15: 84 c0 test %al,%al >> 17: 4d 89 ee mov %r13,%r14 >> 1a: 0f 85 ad 00 00 00 jne 0xcd >> 20: 49 8d 84 24 68 0a 00 lea 0xa68(%r12),%rax >> 27: 00 >> 28: 8b 10 mov (%rax),%edx >> * 2a: 67 48 0f b9 3a ud1 (%edx),%rdi <-- trapping instruction >> 2f: e9 16 fe ff ff jmp 0xfffffe4a >> 34: e8 cc ee 86 f6 call 0xf686ef05 >> 39: 90 nop >> 3a: 0f 0b ud2 >> 3c: 90 nop >> 3d: e9 .byte 0xe9 >> 3e: 75 fe jne 0x3e >> >> >> *** >> >> 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]] >> >> 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/6a7bce19.d5f0ebe7.22d851.0004.GAE%40google.com.