WARNING in nft_pipapo_destroy

Status: upstream: reported on 2026/08/15 00:10
Reported-by: syzbot+68ef5e861ea09f54325f@syzkaller.appspotmail.com
First crash: 44d, last: 2d12h
▶ ▼ Similar bugs (2)
Kernel Title Rank 🛈 Repro Cause bisect Fix bisect Count Last Reported Patched Status
linux-6.1 WARNING in nft_pipapo_destroy origin:lts-only -1 syz, C inconclusive 79 2d12h 44d 0/3 upstream: reported C repro on 2026/08/15 00:11
linux-6.6 WARNING in nft_pipapo_destroy -1 61 2d12h 48d 0/2 upstream: reported on 2026/08/10 19:11

Sample crash report:
------------[ cut here ]------------
WARNING: CPU: 1 PID: 6929 at net/netfilter/nft_set_pipapo.c:2355 nft_pipapo_destroy+0x8b0/0x960 net/netfilter/nft_set_pipapo.c:2355
Modules linked in:
CPU: 1 PID: 6929 Comm: kworker/1:19 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/16/2026
Workqueue: events nf_tables_trans_destroy_work
RIP: 0010:nft_pipapo_destroy+0x8b0/0x960 net/netfilter/nft_set_pipapo.c:2355
Code: 24 80 3c 18 00 74 08 4c 89 f7 e8 fb 3b 81 f9 49 c7 06 00 00 00 00 48 83 c4 40 5b 41 5c 41 5d 41 5e 41 5f 5d c3 e8 a0 07 3c f9 <0f> 0b e9 ad f7 ff ff 48 c7 c1 f0 20 8b 8d 80 e1 07 80 c1 03 38 c1
RSP: 0018:ffffc90004637a68 EFLAGS: 00010293
RAX: ffffffff883d0d00 RBX: ffff8881483430f0 RCX: ffff88802bbfbb80
RDX: 0000000000000000 RSI: ffff888148343000 RDI: ffff888072896928
RBP: ffffc90004637c30 R08: ffff88802bbfbb80 R09: 0000000000000008
R10: 0000000000000018 R11: 0000000000000000 R12: ffff8881483430c0
R13: dffffc0000000000 R14: ffff888148343110 R15: dffffc0000000000
FS:  0000000000000000(0000) GS:ffff8880b9100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f3fef526158 CR3: 000000002679e000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 nft_set_destroy+0x488/0xa30 net/netfilter/nf_tables_api.c:4972
 nft_commit_release net/netfilter/nf_tables_api.c:8872 [inline]
 nf_tables_trans_destroy_work+0xc5d/0xf00 net/netfilter/nf_tables_api.c:8912
 process_one_work+0x867/0xff0 kernel/workqueue.c:2310
 worker_thread+0xad7/0x12a0 kernel/workqueue.c:2457
 kthread+0x42e/0x520 kernel/kthread.c:334
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:287
 </TASK>

Crashes (45):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2026/09/26 03:01 linux-5.15.y 0248c33e835e a3c7249d .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in nft_pipapo_destroy
2026/09/25 03:00 linux-5.15.y 0248c33e835e f281d9d2 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in nft_pipapo_destroy
2026/09/24 02:15 linux-5.15.y 0248c33e835e 0281b448 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in nft_pipapo_destroy
2026/09/22 04:47 linux-5.15.y 0248c33e835e e12281bd .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in nft_pipapo_destroy
2026/09/17 17:10 linux-5.15.y 0248c33e835e 8d7d05f1 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in nft_pipapo_destroy
2026/09/17 17:09 linux-5.15.y 0248c33e835e 8d7d05f1 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in nft_pipapo_destroy
2026/09/16 22:57 linux-5.15.y 0248c33e835e 95928915 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in nft_pipapo_destroy
2026/09/11 11:08 linux-5.15.y 0996e0926f6b b6a5eeb7 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in nft_pipapo_destroy
2026/09/07 12:04 linux-5.15.y 0996e0926f6b 680aa3e1 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in nft_pipapo_destroy
2026/09/07 12:04 linux-5.15.y 0996e0926f6b 680aa3e1 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in nft_pipapo_destroy
2026/09/04 09:58 linux-5.15.y 0996e0926f6b f65209a4 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in nft_pipapo_destroy
2026/09/01 11:19 linux-5.15.y 28c35638ec51 587f6b29 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in nft_pipapo_destroy
2026/08/28 21:07 linux-5.15.y 28c35638ec51 2f52988a .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in nft_pipapo_destroy
2026/08/28 21:06 linux-5.15.y 28c35638ec51 2f52988a .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in nft_pipapo_destroy
2026/08/28 21:06 linux-5.15.y 28c35638ec51 2f52988a .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in nft_pipapo_destroy
2026/08/28 21:05 linux-5.15.y 28c35638ec51 2f52988a .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in nft_pipapo_destroy
2026/08/28 07:24 linux-5.15.y 28c35638ec51 69a01293 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in nft_pipapo_destroy
2026/08/28 07:23 linux-5.15.y 28c35638ec51 69a01293 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in nft_pipapo_destroy
2026/08/28 07:23 linux-5.15.y 28c35638ec51 69a01293 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in nft_pipapo_destroy
2026/08/28 07:23 linux-5.15.y 28c35638ec51 69a01293 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in nft_pipapo_destroy
2026/08/27 14:02 linux-5.15.y 4a1eaf96ee5c 69a01293 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in nft_pipapo_destroy
2026/08/27 10:49 linux-5.15.y 945fa863f02c 69a01293 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in nft_pipapo_destroy
2026/08/27 10:48 linux-5.15.y 945fa863f02c 69a01293 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in nft_pipapo_destroy
2026/08/26 13:27 linux-5.15.y 945fa863f02c a2b77b9e .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in nft_pipapo_destroy
2026/08/26 13:26 linux-5.15.y 945fa863f02c a2b77b9e .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in nft_pipapo_destroy
2026/08/26 13:26 linux-5.15.y 945fa863f02c a2b77b9e .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in nft_pipapo_destroy
2026/08/26 13:26 linux-5.15.y 945fa863f02c a2b77b9e .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in nft_pipapo_destroy
2026/08/26 00:55 linux-5.15.y 945fa863f02c 6a91adb4 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in nft_pipapo_destroy
2026/08/26 00:55 linux-5.15.y 945fa863f02c 6a91adb4 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in nft_pipapo_destroy
2026/08/24 23:38 linux-5.15.y 945fa863f02c 614e416a .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in nft_pipapo_destroy
2026/08/24 11:32 linux-5.15.y 945fa863f02c b55bd4c3 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in nft_pipapo_destroy
2026/08/24 11:26 linux-5.15.y 945fa863f02c b55bd4c3 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in nft_pipapo_destroy
2026/08/24 11:23 linux-5.15.y 945fa863f02c b55bd4c3 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in nft_pipapo_destroy
2026/08/23 13:59 linux-5.15.y 945fa863f02c 1e72964b .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in nft_pipapo_destroy
2026/08/19 16:21 linux-5.15.y 0eb903b5b519 1e72964b .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in nft_pipapo_destroy
2026/08/19 16:12 linux-5.15.y 0eb903b5b519 1e72964b .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in nft_pipapo_destroy
2026/08/19 16:10 linux-5.15.y 0eb903b5b519 1e72964b .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in nft_pipapo_destroy
2026/08/17 23:44 linux-5.15.y aabd761612db 1e72964b .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in nft_pipapo_destroy
2026/08/17 23:44 linux-5.15.y aabd761612db 1e72964b .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in nft_pipapo_destroy
2026/08/17 11:14 linux-5.15.y aabd761612db 905244d6 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in nft_pipapo_destroy
2026/08/17 11:07 linux-5.15.y aabd761612db 905244d6 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in nft_pipapo_destroy
2026/08/15 00:13 linux-5.15.y aabd761612db 746171ee .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in nft_pipapo_destroy
2026/08/15 00:13 linux-5.15.y aabd761612db 746171ee .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in nft_pipapo_destroy
2026/08/15 00:10 linux-5.15.y aabd761612db 746171ee .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in nft_pipapo_destroy
2026/08/15 00:10 linux-5.15.y aabd761612db 746171ee .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in nft_pipapo_destroy
* Struck through repros no longer work on HEAD.