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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: 115d, last: 17d
▶ ▼ ✨ AI Jobs (4)
ID Workflow Result Correct Bug Created Started Finished Revision Error
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 3 (3) 2026/04/06 13:37
[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+0x2ae/0x2e0 kernel/seccomp.c:1407, CPU#2: syz.0.17/6089
Modules linked in:
CPU: 2 UID: 0 PID: 6089 Comm: syz.0.17 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
RIP: 0010:__secure_computing+0x2ae/0x2e0 kernel/seccomp.c:1407
Code: 00 e8 96 52 fe ff e8 31 27 ff ff e8 fc 68 6b 00 bf 09 00 00 00 e8 82 f0 be ff e8 3d 79 6b 00 e9 06 fe ff ff e8 13 27 ff ff 90 <0f> 0b 90 e8 da 68 6b 00 bf 09 00 00 00 e8 60 f0 be ff e8 fb 26 ff
RSP: 0018:ffffc9000386fed0 EFLAGS: 00010293
RAX: 0000000000000000 RBX: ffffc9000386ff48 RCX: ffffffff82097151
RDX: ffff88802a048000 RSI: ffffffff8209730d RDI: ffff88802a048000
RBP: 0000000000000003 R08: 0000000000000005 R09: 0000000000000003
R10: 0000000000000003 R11: 0000000000000000 R12: 00000000000001b4
R13: 00000000000001b4 R14: ffff88802a048000 R15: 0000000000000001
FS:  00005555604ee500(0000) GS:ffff8880d654a000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f59cd871fc0 CR3: 0000000058ffd000 CR4: 0000000000352ef0
Call Trace:
 <TASK>
 syscall_trace_enter include/linux/entry-common.h:112 [inline]
 syscall_enter_from_user_mode_work include/linux/entry-common.h:156 [inline]
 syscall_enter_from_user_mode include/linux/entry-common.h:187 [inline]
 do_syscall_64+0x568/0xf80 arch/x86/entry/syscall_64.c:90
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f59cd99c629
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:00007ffc95a0ecd8 EFLAGS: 00000246 ORIG_RAX: 00000000000001b4
RAX: ffffffffffffffda RBX: 00007ffc95a0edc0 RCX: 00007f59cd99c629
RDX: 0000000000000000 RSI: 000000000000001e RDI: 0000000000000003
RBP: 0000000000012559 R08: 0000000000000001 R09: 0000000000000000
R10: 0000001b2df20000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f59cdc15fac R14: 00007f59cdc15fa8 R15: 00007f59cdc15fa0
 </TASK>

Crashes (5):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
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
2026/03/06 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.