Re: [moderation/CI] Re: netfilter: ipset fixes, second batch

#syz upstream


On Wed, Jun 17, 2026 at 3:22 PM syzbot ci
<[email protected]> wrote:
>
> syzbot ci has tested the following series
>
> [v3] netfilter: ipset fixes, second batch
> https://lore.kernel.org/all/[email protected]
> * [PATCH v3 1/7] netfilter: ipset: Don't use test_bit() in lockless RCU readers in hash types
> * [PATCH v3 2/7] netfilter: ipset: Don't use test_bit() in lockless RCU readers in bitmap types
> * [PATCH v3 3/7] netfilter: ipset: fix order of kfree_rcu() and rcu_assign_pointer()
> * [PATCH v3 4/7] netfilter: ipset: exlude gc when resize is in progress
> * [PATCH v3 5/7] netfilter: ipset: make sure gc is properly stopped
> * [PATCH v3 6/7] netfilter: ipset: cleanup the add/del backlog when resize failed
> * [PATCH v3 7/7] netfilter: ipset: rework cidr bookkeeping
>
> and found the following issues:
> * INFO: trying to register non-static key in hash_ipportip6_resize
> * INFO: trying to register non-static key in hash_netport6_resize
> * INFO: trying to register non-static key in hash_netportnet6_resize
>
> Full report is available here:
> https://ci.syzbot.org/series/7264660b-3f58-4809-9af0-c77ead1aac16
>
> ***
>
> INFO: trying to register non-static key in hash_ipportip6_resize
>
> tree:      nf-next
> URL:       https://kernel.googlesource.com/pub/scm/linux/kernel/git/netfilter/nf-next.git
> base:      3b165c2a29cfb6453f26e1ac833ca6afd28d28cf
> 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/44611eeb-52b4-4b97-8744-2265cbb063fa/config
> syz repro: https://ci.syzbot.org/findings/c1aaddfd-5ff4-410d-85fa-3c212552d465/syz_repro
>
> INFO: trying to register non-static key.
> The code is fine but needs lockdep annotation, or maybe
> you didn't initialize this object before use?
> turning off the locking correctness validator.
> CPU: 0 UID: 0 PID: 5810 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
>  assign_lock_key+0x133/0x150 kernel/locking/lockdep.c:984
>  register_lock_class+0xcc/0x2e0 kernel/locking/lockdep.c:1299
>  __lock_acquire+0xad/0x2cf0 kernel/locking/lockdep.c:5112
>  lock_acquire+0x106/0x350 kernel/locking/lockdep.c:5868
>  __raw_spin_lock_bh include/linux/spinlock_api_smp.h:150 [inline]
>  _raw_spin_lock_bh+0x36/0x50 kernel/locking/spinlock.c:182
>  spin_lock_bh include/linux/spinlock.h:348 [inline]
>  hash_ipportip6_resize+0x4d4/0x1dd0 net/netfilter/ipset/ip_set_hash_gen.h:699
>  call_ad+0x463/0xb60 net/netfilter/ipset/ip_set_core.c:1758
>  ip_set_ad+0x824/0x9d0 net/netfilter/ipset/ip_set_core.c:1842
>  nfnetlink_rcv_msg+0xc03/0x12c0 net/netfilter/nfnetlink.c:300
>  netlink_rcv_skb+0x232/0x4b0 net/netlink/af_netlink.c:2556
>  nfnetlink_rcv+0x2c0/0x27b0 net/netfilter/nfnetlink.c:667
>  netlink_unicast_kernel net/netlink/af_netlink.c:1319 [inline]
>  netlink_unicast+0x75c/0x8e0 net/netlink/af_netlink.c:1345
>  netlink_sendmsg+0x813/0xb40 net/netlink/af_netlink.c:1900
>  sock_sendmsg_nosec net/socket.c:787 [inline]
>  __sock_sendmsg net/socket.c:802 [inline]
>  ____sys_sendmsg+0x972/0x9f0 net/socket.c:2699
>  ___sys_sendmsg+0x2a5/0x360 net/socket.c:2753
>  __sys_sendmsg net/socket.c:2785 [inline]
>  __do_sys_sendmsg net/socket.c:2790 [inline]
>  __se_sys_sendmsg net/socket.c:2788 [inline]
>  __x64_sys_sendmsg+0x1bd/0x2a0 net/socket.c:2788
>  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: 0033:0x7f4ef2b9ce59
> 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:00007f4ef3b42028 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
> RAX: ffffffffffffffda RBX: 00007f4ef2e15fa0 RCX: 00007f4ef2b9ce59
> RDX: 0000000000000000 RSI: 00002000000002c0 RDI: 0000000000000004
> RBP: 00007f4ef2c32d6f R08: 0000000000000000 R09: 0000000000000000
> R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
> R13: 00007f4ef2e16038 R14: 00007f4ef2e15fa0 R15: 00007ffd926dea58
>  </TASK>
>
>
> ***
>
> INFO: trying to register non-static key in hash_netport6_resize
>
> tree:      nf-next
> URL:       https://kernel.googlesource.com/pub/scm/linux/kernel/git/netfilter/nf-next.git
> base:      3b165c2a29cfb6453f26e1ac833ca6afd28d28cf
> 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/44611eeb-52b4-4b97-8744-2265cbb063fa/config
> syz repro: https://ci.syzbot.org/findings/60d79dbd-6e73-4ee8-be39-8bea69cb5f52/syz_repro
>
> INFO: trying to register non-static key.
> The code is fine but needs lockdep annotation, or maybe
> you didn't initialize this object before use?
> turning off the locking correctness validator.
> CPU: 0 UID: 0 PID: 5834 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
>  assign_lock_key+0x133/0x150 kernel/locking/lockdep.c:984
>  register_lock_class+0xcc/0x2e0 kernel/locking/lockdep.c:1299
>  __lock_acquire+0xad/0x2cf0 kernel/locking/lockdep.c:5112
>  lock_acquire+0x106/0x350 kernel/locking/lockdep.c:5868
>  __raw_spin_lock_bh include/linux/spinlock_api_smp.h:150 [inline]
>  _raw_spin_lock_bh+0x36/0x50 kernel/locking/spinlock.c:182
>  spin_lock_bh include/linux/spinlock.h:348 [inline]
>  hash_netport6_resize+0x548/0x1d30 net/netfilter/ipset/ip_set_hash_gen.h:699
>  call_ad+0x463/0xb60 net/netfilter/ipset/ip_set_core.c:1758
>  ip_set_ad+0x824/0x9d0 net/netfilter/ipset/ip_set_core.c:1842
>  nfnetlink_rcv_msg+0xc03/0x12c0 net/netfilter/nfnetlink.c:300
>  netlink_rcv_skb+0x232/0x4b0 net/netlink/af_netlink.c:2556
>  nfnetlink_rcv+0x2c0/0x27b0 net/netfilter/nfnetlink.c:667
>  netlink_unicast_kernel net/netlink/af_netlink.c:1319 [inline]
>  netlink_unicast+0x75c/0x8e0 net/netlink/af_netlink.c:1345
>  netlink_sendmsg+0x813/0xb40 net/netlink/af_netlink.c:1900
>  sock_sendmsg_nosec net/socket.c:787 [inline]
>  __sock_sendmsg net/socket.c:802 [inline]
>  ____sys_sendmsg+0x972/0x9f0 net/socket.c:2699
>  ___sys_sendmsg+0x2a5/0x360 net/socket.c:2753
>  __sys_sendmsg net/socket.c:2785 [inline]
>  __do_sys_sendmsg net/socket.c:2790 [inline]
>  __se_sys_sendmsg net/socket.c:2788 [inline]
>  __x64_sys_sendmsg+0x1bd/0x2a0 net/socket.c:2788
>  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: 0033:0x7f5c11d9ce59
> 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:00007f5c113dd028 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
> RAX: ffffffffffffffda RBX: 00007f5c12016090 RCX: 00007f5c11d9ce59
> RDX: 0000000000000090 RSI: 00002000000002c0 RDI: 0000000000000004
> RBP: 00007f5c11e32d6f R08: 0000000000000000 R09: 0000000000000000
> R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
> R13: 00007f5c12016128 R14: 00007f5c12016090 R15: 00007ffd4124a0a8
>  </TASK>
>
>
> ***
>
> INFO: trying to register non-static key in hash_netportnet6_resize
>
> tree:      nf-next
> URL:       https://kernel.googlesource.com/pub/scm/linux/kernel/git/netfilter/nf-next.git
> base:      3b165c2a29cfb6453f26e1ac833ca6afd28d28cf
> 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/44611eeb-52b4-4b97-8744-2265cbb063fa/config
> syz repro: https://ci.syzbot.org/findings/a0e027e2-8833-4fe6-8f75-2f388682c035/syz_repro
>
> INFO: trying to register non-static key.
> The code is fine but needs lockdep annotation, or maybe
> you didn't initialize this object before use?
> turning off the locking correctness validator.
> CPU: 0 UID: 0 PID: 5880 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
>  assign_lock_key+0x133/0x150 kernel/locking/lockdep.c:984
>  register_lock_class+0xcc/0x2e0 kernel/locking/lockdep.c:1299
>  __lock_acquire+0xad/0x2cf0 kernel/locking/lockdep.c:5112
>  lock_acquire+0x106/0x350 kernel/locking/lockdep.c:5868
>  __raw_spin_lock_bh include/linux/spinlock_api_smp.h:150 [inline]
>  _raw_spin_lock_bh+0x36/0x50 kernel/locking/spinlock.c:182
>  spin_lock_bh include/linux/spinlock.h:348 [inline]
>  hash_netportnet6_resize+0x5aa/0x2040 net/netfilter/ipset/ip_set_hash_gen.h:699
>  call_ad+0x463/0xb60 net/netfilter/ipset/ip_set_core.c:1758
>  ip_set_ad+0x824/0x9d0 net/netfilter/ipset/ip_set_core.c:1842
>  nfnetlink_rcv_msg+0xc03/0x12c0 net/netfilter/nfnetlink.c:300
>  netlink_rcv_skb+0x232/0x4b0 net/netlink/af_netlink.c:2556
>  nfnetlink_rcv+0x2c0/0x27b0 net/netfilter/nfnetlink.c:667
>  netlink_unicast_kernel net/netlink/af_netlink.c:1319 [inline]
>  netlink_unicast+0x75c/0x8e0 net/netlink/af_netlink.c:1345
>  netlink_sendmsg+0x813/0xb40 net/netlink/af_netlink.c:1900
>  sock_sendmsg_nosec net/socket.c:787 [inline]
>  __sock_sendmsg net/socket.c:802 [inline]
>  ____sys_sendmsg+0x972/0x9f0 net/socket.c:2699
>  ___sys_sendmsg+0x2a5/0x360 net/socket.c:2753
>  __sys_sendmsg net/socket.c:2785 [inline]
>  __do_sys_sendmsg net/socket.c:2790 [inline]
>  __se_sys_sendmsg net/socket.c:2788 [inline]
>  __x64_sys_sendmsg+0x1bd/0x2a0 net/socket.c:2788
>  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: 0033:0x7f9c00b9ce59
> 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:00007f9c01a82028 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
> RAX: ffffffffffffffda RBX: 00007f9c00e15fa0 RCX: 00007f9c00b9ce59
> RDX: 0000000000000000 RSI: 00002000000002c0 RDI: 0000000000000004
> RBP: 00007f9c00c32d6f R08: 0000000000000000 R09: 0000000000000000
> R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
> R13: 00007f9c00e16038 R14: 00007f9c00e15fa0 R15: 00007ffe8ca45b58
>  </TASK>
>
>
> ***
>
> 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].
>
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> (should be on a separate line).
>
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>
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>
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-- 
Pimyn Girgis - Ⲡⲟⲓⲙⲏⲛ Ⲅⲉⲱⲣⲅⲓⲟⲥ
Software Engineer
Kernel Dynamic Analysis
[email protected]