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WARNING in __secure_computing

Status: upstream: reported C repro on 2026/02/18 04:00
Subsystems: kernel
[Documentation on labels]
Reported-by: syzbot+0a4c46806941297fecb9@syzkaller.appspotmail.com
First crash: 141d, last: 2d07h
Cause bisection: failed (error log, bisect log)
  
▶ ▼ ✨ AI Jobs (6)
ID Workflow Result Correct Bug Created Started Finished Revision Error
dcac3c79-7d0b-4c14-a0e1-fb3a3cb3cb9c assessment-security 💥 WARNING in __secure_computing 2026/07/05 08:34 2026/07/05 08:34 2026/07/05 08:34 93f579545ae410f5bccfa141d2e7bf03178f036c 
failed to deserialize syz repro: unknown syscall syz_memcpy_off$IO_URING_METADATA_GENERIC
021aa253-a65d-4e33-8b73-551e91f02138 assessment-security 💥 WARNING in __secure_computing 2026/06/18 08:13 2026/06/18 08:13 2026/06/18 08:13 b62b3ded1759f79b37600c5ffe2b0a81b919b0b0 
failed to deserialize syz repro: unknown syscall syz_memcpy_off$IO_URING_METADATA_GENERIC
64bbd9d0-7659-4ef2-ac24-da2d2f915b0f assessment-security 💥 WARNING in __secure_computing 2026/06/10 03:57 2026/06/10 03:57 2026/06/10 03:57 c36c07f6c1f2230a36374cbd22235f635e8f9284 
failed to deserialize syz repro: unknown syscall syz_memcpy_off$IO_URING_METADATA_GENERIC
d8bde798-98f8-48a9-9b0b-ce04b2f63061 assessment-security 💥 WARNING in __secure_computing 2026/06/04 07:00 2026/06/04 07:00 2026/06/04 07:00 62fe15281f5011cd203d8845b8767b10e7443aa5 
failed to deserialize syz repro: unknown syscall syz_memcpy_off$IO_URING_METADATA_GENERIC
0c9e65e7-780b-4392-bc62-d286da9a9b39 assessment-security 💥 WARNING in __secure_computing 2026/06/02 03:57 2026/06/02 03:57 2026/06/02 03:57 386cc6dacdf7e3ebce9507beed6755d7e999554d 
failed to deserialize syz repro: unknown syscall syz_memcpy_off$IO_URING_METADATA_GENERIC
9cabdcf4-c678-456e-8f0c-3b22b41b3e31 assessment-security 💥 WARNING in __secure_computing 2026/05/21 17:13 2026/05/21 17:13 2026/05/21 17:13 d57425845dbe663f86e1e54a4997e95bd557b624 
failed to deserialize syz repro: unknown syscall syz_memcpy_off$IO_URING_METADATA_GENERIC
▶ ▼ Discussions (2)
Title Replies (including bot) Last reply
[PATCH] signalfd: don't dequeue the forced fatal signals 5 (5) 2026/06/19 20:47
[syzbot] [io-uring?] WARNING in __secure_computing 8 (12) 2026/04/05 15:29
▶ ▼ Last patch testing requests (9)
Created Duration User Patch Repo Result
2026/05/27 05:58 20m retest repro upstream error
2026/05/27 05:58 20m retest repro upstream report log
2026/05/13 05:18 21m retest repro upstream report log
2026/04/05 15:10 18m oleg@redhat.com patch upstream OK log
2026/04/05 14:21 18m oleg@redhat.com patch upstream log
2026/04/04 14:20 20m oleg@redhat.com patch upstream OK log
2026/03/04 05:00 14m retest repro upstream report log
2026/03/04 05:00 13m retest repro upstream report log
2026/03/04 05:00 12m retest repro upstream report log

Sample crash report:
------------[ cut here ]------------
1
WARNING: kernel/seccomp.c:1407 at __secure_computing+0x25c/0x2b0 kernel/seccomp.c:1407, CPU#0: syz.0.17/5857
Modules linked in:
CPU: 0 UID: 0 PID: 5857 Comm: syz.0.17 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026
RIP: 0010:__secure_computing+0x25c/0x2b0 kernel/seccomp.c:1407
Code: 44 89 f1 80 e1 07 80 c1 03 38 c1 0f 8c 3a fe ff ff 4c 89 f7 e8 05 22 6d 00 e9 2d fe ff ff 41 83 fc 03 75 49 e8 75 95 ff ff 90 <0f> 0b 90 eb a4 44 89 f9 80 e1 07 80 c1 03 38 c1 0f 8c a4 fe ff ff
RSP: 0018:ffffc90003ec7ea8 EFLAGS: 00010293
RAX: ffffffff81c6dccb RBX: dffffc0000000000 RCX: ffff888031db1f00
RDX: 0000000000000000 RSI: ffffffff8ebb8760 RDI: 0000000000000003
RBP: 0000000000000000 R08: ffff888031db1f00 R09: 0000000000000003
R10: 0000000000000003 R11: 0000000000000000 R12: 0000000000000003
R13: ffffc90003ec7fc0 R14: 00000000000001b4 R15: ffff888031db1f00
FS:  000055557ade5500(0000) GS:ffff888124f59000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ff767273780 CR3: 000000007448c000 CR4: 00000000003526f0
Call Trace:
 <TASK>
 syscall_trace_enter include/linux/entry-common.h:103 [inline]
 syscall_enter_from_user_mode_work include/linux/entry-common.h:147 [inline]
 syscall_enter_from_user_mode include/linux/entry-common.h:178 [inline]
 do_syscall_64+0x10e/0x580 arch/x86/entry/syscall_64.c:89
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7ff76739de59
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:00007ffea70baa68 EFLAGS: 00000246 ORIG_RAX: 00000000000001b4
RAX: ffffffffffffffda RBX: 00007ffea70bab50 RCX: 00007ff76739de59
RDX: 0000000000000000 RSI: 000000000000001e RDI: 0000000000000003
RBP: 00000000000193fa R08: 0000000000000001 R09: 0000000000000000
R10: 0000001b2c420000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ff767625fac R14: 00007ff767625fa8 R15: 00007ff767625fa0
 </TASK>

Crashes (7):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2026/07/07 09:04 upstream 0e35b9b6ec0f 8e71ce95 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce WARNING in __secure_computing
2026/02/18 04:51 upstream 2961f841b025 39751c21 .config console log report syz / log C [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream WARNING in __secure_computing
2026/02/18 04:15 upstream 2961f841b025 39751c21 .config console log report syz / log C [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream WARNING in __secure_computing
2026/02/18 03:40 upstream 2961f841b025 39751c21 .config console log report syz / log C [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream WARNING in __secure_computing
2026/07/05 01:27 upstream 1e9cdc2ea15a fcece630 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce WARNING in __secure_computing
2026/03/06 21:47 upstream 651690480a96 41d8037d .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream WARNING in __secure_computing
2026/02/18 03:01 upstream 2961f841b025 39751c21 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream WARNING in __secure_computing
* Struck through repros no longer work on HEAD.