WARNING in inet_sock_destruct (2)

Status: auto-obsoleted due to no activity on 2026/10/28 06:09
Reported-by: syzbot+c1ff5aa334cbeba54710@syzkaller.appspotmail.com
First crash: 297d, last: 114d
Fix bisection: failed (error log, bisect log)
  
▶ ▼ Bug presence (1)
Date Name Commit Repro Result
2026/10/28 upstream (ToT) 65ba8f34ec88 syz Didn't crash
▶ ▼ Similar bugs (15)
Kernel Title Rank 🛈 Repro Cause bisect Fix bisect Count Last Reported Patched Status
android-49 WARNING in inet_sock_destruct -1 syz, C 728 2988d 2762d 0/3 public: reported C repro on 2019/04/12 00:00
linux-6.1 WARNING in inet_sock_destruct (2) origin:lts-only -1 syz, C inconclusive 17 22d 644d 0/3 upstream: reported C repro on 2025/01/28 09:26
android-44 WARNING in inet_sock_destruct -1 12 2996d 3208d 0/2 auto-closed as invalid on 2019/02/22 12:37
upstream WARNING in inet_sock_destruct (4) net -1 syz, C done 6683 427d 1229d 29/29 fixed on 2025/09/04 16:57
upstream WARNING in inet_sock_destruct (3) net -1 syz, C 87 1248d 1350d 22/29 fixed on 2023/06/08 14:41
upstream WARNING in inet_sock_destruct (5) net -1 syz, C error 8 383d 419d 29/29 fixed on 2025/10/29 21:02
linux-6.6 WARNING in inet_sock_destruct origin:lts-only -1 syz, C done 3 413d 414d 2/2 fixed on 2025/10/22 03:03
linux-5.15 WARNING in inet_sock_destruct -1 syz, C error 2061 407d 1275d 0/3 auto-obsoleted due to no activity on 2025/12/01 05:33
linux-6.1 WARNING in inet_sock_destruct origin:upstream missing-backport -1 syz, C done 631 688d 1301d 3/3 fixed on 2025/01/27 09:36
android-6-12 WARNING in inet_sock_destruct origin:upstream -1 syz, C 58 431d 494d 0/1 auto-obsoleted due to no activity on 2025/10/18 01:19
upstream WARNING in inet_sock_destruct (2) net -1 syz, C unreliable unreliable 1259 1546d 2177d 0/29 closed as invalid on 2022/10/12 18:26
upstream WARNING in inet_sock_destruct (6) prio:high net -1 syz, C error error 645 2d06h 263d 0/29 upstream: reported C repro on 2026/02/13 20:08
upstream WARNING in inet_sock_destruct net -1 5893 3290d 3285d 0/29 closed as invalid on 2018/01/30 22:53
linux-4.14 WARNING in inet_sock_destruct -1 syz, C inconclusive 1 2346d 2406d 0/1 upstream: reported C repro on 2020/04/02 03:04
linux-5.15 WARNING in inet_sock_destruct (2) origin:lts-only -1 syz, C inconclusive 70 10d 334d 0/3 upstream: reported C repro on 2025/12/04 18:03

Sample crash report:
------------[ cut here ]------------
WARNING: CPU: 1 PID: 789 at net/ipv4/af_inet.c:155 inet_sock_destruct+0x687/0x7a0 net/ipv4/af_inet.c:155
Modules linked in:
CPU: 1 PID: 789 Comm: kworker/1:2 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026
Workqueue: events mptcp_worker
RIP: 0010:inet_sock_destruct+0x687/0x7a0 net/ipv4/af_inet.c:155
Code: ff ff e8 bc 98 6e f8 0f 0b e9 48 fe ff ff e8 b0 98 6e f8 0f 0b 41 80 3c 1c 00 0f 85 74 fe ff ff e9 77 fe ff ff e8 99 98 6e f8 <0f> 0b e9 dd fe ff ff 89 f9 80 e1 07 80 c1 03 38 c1 0f 8c 38 fc ff
RSP: 0018:ffffc90003a47b28 EFLAGS: 00010293
RAX: ffffffff89184cd7 RBX: dffffc0000000000 RCX: ffff888021390000
RDX: 0000000000000000 RSI: 00000000fffd0000 RDI: 0000000000000000
RBP: 00000000fffd0000 R08: ffff8880765e3e77 R09: 1ffff1100ecbc7ce
R10: dffffc0000000000 R11: ffffed100ecbc7cf R12: ffff8880765e3c00
R13: 1ffff1100ecbc782 R14: ffffffff8a6fdba0 R15: ffffffff8e7257a0
FS:  0000000000000000(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f6672462ff8 CR3: 000000002f2ab000 CR4: 00000000003506e0
Call Trace:
 <TASK>
 __sk_destruct+0x83/0x660 net/core/sock.c:2201
 process_one_work kernel/workqueue.c:2653 [inline]
 process_scheduled_works+0xa60/0x1600 kernel/workqueue.c:2730
 worker_thread+0xa5e/0xfe0 kernel/workqueue.c:2811
 kthread+0x2fa/0x390 kernel/kthread.c:388
 ret_from_fork+0x48/0x80 arch/x86/kernel/process.c:152
 ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:293
 </TASK>

Crashes (10):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2026/07/12 08:41 linux-6.6.y da47cbc25466 d78ea535 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in inet_sock_destruct
2026/01/11 14:02 linux-6.6.y 5fa4793a2d2d d6526ea3 .config console log report syz / log [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in inet_sock_destruct
2026/01/11 09:35 linux-6.6.y 5fa4793a2d2d d6526ea3 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in inet_sock_destruct
2026/01/11 05:03 linux-6.6.y 5fa4793a2d2d d6526ea3 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in inet_sock_destruct
2026/01/10 23:44 linux-6.6.y 5fa4793a2d2d d6526ea3 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in inet_sock_destruct
2026/01/10 20:03 linux-6.6.y 5fa4793a2d2d d6526ea3 .config console log report syz / log [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in inet_sock_destruct
2026/01/10 15:00 linux-6.6.y 5fa4793a2d2d d6526ea3 .config console log report syz / log [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in inet_sock_destruct
2026/01/10 10:23 linux-6.6.y 5fa4793a2d2d d6526ea3 .config console log report syz / log [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in inet_sock_destruct
2026/01/10 05:28 linux-6.6.y 5fa4793a2d2d d6526ea3 .config console log report syz / log [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in inet_sock_destruct
2026/01/10 00:37 linux-6.6.y 5fa4793a2d2d d6526ea3 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in inet_sock_destruct
* Struck through repros no longer work on HEAD.