kernel panic: kernel: panic_on_warn set ... (3)

Status: upstream: reported on 2026/08/09 00:09
Subsystems: nfc
[Documentation on labels]
Reported-by: syzbot+fe5ea83cdd7fc263f452@syzkaller.appspotmail.com
First crash: 4d23h, last: 1d23h
Discussions (1)
Title Replies (including bot) Last reply
[syzbot] [nfc?] kernel panic: kernel: panic_on_warn set ... (3) 0 (1) 2026/08/09 00:09
Similar bugs (8)
Kernel Title Rank 🛈 Repro Cause bisect Fix bisect Count Last Reported Patched Status
linux-6.6 kernel panic: kernel: panic_on_warn set ... 2 30 1d20h 4d15h 0/2 upstream: reported on 2026/08/04 21:06
upstream kernel panic: kernel: panic_on_warn set ... kernel 2 1 590d 586d 0/29 auto-obsoleted due to no activity on 2025/03/27 03:23
linux-5.15 kernel panic: kernel: panic_on_warn set ... (2) 2 3 4d10h 33d 0/3 upstream: reported on 2026/07/07 08:59
android-5-10 kernel panic: kernel: panic_on_warn set ... 2 1 4d22h 4d22h 0/2 premoderation: reported on 2026/08/04 14:18
linux-5.15 kernel panic: kernel: panic_on_warn set ... 2 1 243d 243d 0/3 auto-obsoleted due to no activity on 2026/03/19 11:08
linux-6.1 kernel panic: kernel: panic_on_warn set ... 2 9 4d10h 4d15h 0/3 upstream: reported on 2026/08/04 21:46
upstream kernel panic: kernel: panic_on_warn set ... (2) net 2 64 263d 300d 0/29 auto-obsoleted due to no activity on 2026/01/19 08:34
android-6-1 kernel panic: kernel: panic_on_warn set ... 2 1 4d21h 4d21h 0/2 premoderation: reported on 2026/08/04 15:27

Sample crash report:
Kernel panic - not syncing: kernel: panic_on_warn set ...
CPU: 0 UID: 0 PID: 7451 Comm: kworker/u8:11 Tainted: G             L      syzkaller #0 PREEMPT(full) 
Tainted: [L]=SOFTLOCKUP
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/16/2026
Workqueue: iou_exit io_ring_exit_work
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:94 [inline]
 dump_stack_lvl+0x100/0x190 lib/dump_stack.c:120
 vpanic+0x552/0x970 kernel/panic.c:651
 panic+0xd1/0xe0 kernel/panic.c:788
 check_panic_on_warn kernel/panic.c:525 [inline]
 check_panic_on_warn.cold+0x19/0x34 kernel/panic.c:520
 __warn.cold+0x191/0x318 kernel/panic.c:1104
 __report_bug+0x30f/0x440 lib/bug.c:254
 report_bug+0xb2/0x220 lib/bug.c:286
 handle_bug+0x16a/0x2a0 arch/x86/kernel/traps.c:436
 exc_invalid_op+0x17/0x50 arch/x86/kernel/traps.c:490
 asm_exc_invalid_op+0x1a/0x20 arch/x86/include/asm/idtentry.h:593
RIP: 0010:io_ring_exit_work+0x479/0xd7a io_uring/io_uring.c:2365
Code: 8e e8 ab 8c 44 01 48 8b 05 24 97 4b 0d 4c 8b 7c 24 38 31 ff 49 29 c7 4c 89 fe e8 f2 f2 d4 00 4d 85 ff 79 12 e8 48 f8 d4 00 90 <0f> 0b 90 48 c7 44 24 20 70 17 00 00 e8 36 f8 d4 00 48 8b 74 24 20
RSP: 0018:ffffc900047b7aa0 EFLAGS: 00010293
RAX: 0000000000000000 RBX: ffff888052290710 RCX: ffffffff81355b6e
RDX: ffff888052140000 RSI: ffffffff81355b78 RDI: ffff888052140000
RBP: ffffc900047b7c38 R08: 0000000000000007 R09: 0000000000000000
R10: fffffffffffffffc R11: 0000000000000000 R12: ffff888052290000
R13: dffffc0000000000 R14: 0000000052290700 R15: fffffffffffffffc
 process_one_work+0xa23/0x1940 kernel/workqueue.c:3322
 process_scheduled_works kernel/workqueue.c:3405 [inline]
 worker_thread+0x5ef/0xe50 kernel/workqueue.c:3486
 kthread+0x370/0x450 kernel/kthread.c:436
 ret_from_fork+0x72b/0xd50 arch/x86/kernel/process.c:158
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
 </TASK>
Kernel Offset: disabled
Rebooting in 86400 seconds..

Crashes (66):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2026/08/07 13:03 upstream f9a2394a2348 e4ef95d6 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-badwrites-root kernel panic: kernel: panic_on_warn set ...
2026/08/06 17:58 upstream 0d8395707651 c38879ea .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-badwrites-root kernel panic: kernel: panic_on_warn set ...
2026/08/05 04:25 upstream c21bb4193868 d4abbeac .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-badwrites-root kernel panic: kernel: panic_on_warn set ...
2026/08/05 00:29 upstream 848acc8ffe1b d4abbeac .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-badwrites-root kernel panic: kernel: panic_on_warn set ...
2026/08/04 23:39 upstream 848acc8ffe1b d4abbeac .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-badwrites-root kernel panic: kernel: panic_on_warn set ...
2026/08/04 21:56 upstream 848acc8ffe1b d4abbeac .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-badwrites-root kernel panic: kernel: panic_on_warn set ...
2026/08/04 20:56 upstream 848acc8ffe1b d4abbeac .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-badwrites-root kernel panic: kernel: panic_on_warn set ...
2026/08/04 19:48 upstream 848acc8ffe1b d4abbeac .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-badwrites-root kernel panic: kernel: panic_on_warn set ...
2026/08/04 18:05 upstream 848acc8ffe1b d4abbeac .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root kernel panic: kernel: panic_on_warn set ...
2026/08/04 18:03 upstream 848acc8ffe1b d4abbeac .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root kernel panic: kernel: panic_on_warn set ...
2026/08/04 18:02 upstream 848acc8ffe1b d4abbeac .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-badwrites-root kernel panic: kernel: panic_on_warn set ...
2026/08/04 17:58 upstream 848acc8ffe1b d4abbeac .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-badwrites-root kernel panic: kernel: panic_on_warn set ...
2026/08/04 17:56 upstream 848acc8ffe1b d4abbeac .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root kernel panic: kernel: panic_on_warn set ...
2026/08/04 17:12 upstream 848acc8ffe1b d4abbeac .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root kernel panic: kernel: panic_on_warn set ...
2026/08/04 16:41 upstream 848acc8ffe1b d4abbeac .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root kernel panic: kernel: panic_on_warn set ...
2026/08/04 16:27 upstream 848acc8ffe1b d4abbeac .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root kernel panic: kernel: panic_on_warn set ...
2026/08/04 16:23 upstream 848acc8ffe1b d4abbeac .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root kernel panic: kernel: panic_on_warn set ...
2026/08/04 16:07 upstream 848acc8ffe1b d4abbeac .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root kernel panic: kernel: panic_on_warn set ...
2026/08/04 16:01 upstream 848acc8ffe1b d4abbeac .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-selinux-root kernel panic: kernel: panic_on_warn set ...
2026/08/04 15:51 upstream 848acc8ffe1b d4abbeac .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-selinux-root kernel panic: kernel: panic_on_warn set ...
2026/08/04 15:38 upstream 848acc8ffe1b d4abbeac .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-selinux-root kernel panic: kernel: panic_on_warn set ...
2026/08/04 15:22 upstream 848acc8ffe1b d4abbeac .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-selinux-root kernel panic: kernel: panic_on_warn set ...
2026/08/04 15:14 upstream 848acc8ffe1b d4abbeac .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-selinux-root kernel panic: kernel: panic_on_warn set ...
2026/08/04 15:05 upstream 848acc8ffe1b d4abbeac .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-selinux-root kernel panic: kernel: panic_on_warn set ...
2026/08/04 15:00 upstream 848acc8ffe1b d4abbeac .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-selinux-root kernel panic: kernel: panic_on_warn set ...
2026/08/04 14:58 upstream 848acc8ffe1b d4abbeac .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-selinux-root kernel panic: kernel: panic_on_warn set ...
2026/08/04 14:47 upstream 848acc8ffe1b d4abbeac .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-selinux-root kernel panic: kernel: panic_on_warn set ...
2026/08/04 14:30 upstream 848acc8ffe1b d4abbeac .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-selinux-root kernel panic: kernel: panic_on_warn set ...
2026/08/04 17:48 upstream 848acc8ffe1b 3c5eaa21 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream kernel panic: kernel: panic_on_warn set ...
2026/08/04 17:46 upstream 848acc8ffe1b 3c5eaa21 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream kernel panic: kernel: panic_on_warn set ...
2026/08/04 17:31 upstream 848acc8ffe1b 3c5eaa21 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream kernel panic: kernel: panic_on_warn set ...
2026/08/04 17:02 upstream 848acc8ffe1b 3c5eaa21 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream kernel panic: kernel: panic_on_warn set ...
2026/08/04 14:59 upstream 848acc8ffe1b 3c5eaa21 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream kernel panic: kernel: panic_on_warn set ...
2026/08/04 14:58 upstream 848acc8ffe1b 3c5eaa21 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream kernel panic: kernel: panic_on_warn set ...
2026/08/04 13:28 upstream 848acc8ffe1b 3c5eaa21 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream kernel panic: kernel: panic_on_warn set ...
2026/08/04 17:33 upstream 848acc8ffe1b 3c5eaa21 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream-386 kernel panic: kernel: panic_on_warn set ...
2026/08/04 17:30 upstream 848acc8ffe1b 3c5eaa21 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream-386 kernel panic: kernel: panic_on_warn set ...
2026/08/04 17:20 upstream 848acc8ffe1b 3c5eaa21 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream-386 kernel panic: kernel: panic_on_warn set ...
2026/08/04 17:13 upstream 848acc8ffe1b 3c5eaa21 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream-386 kernel panic: kernel: panic_on_warn set ...
2026/08/04 16:53 upstream 848acc8ffe1b 3c5eaa21 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream-386 kernel panic: kernel: panic_on_warn set ...
2026/08/04 16:44 upstream 848acc8ffe1b 3c5eaa21 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream-386 kernel panic: kernel: panic_on_warn set ...
2026/08/04 16:02 upstream 848acc8ffe1b 3c5eaa21 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream-386 kernel panic: kernel: panic_on_warn set ...
2026/08/04 15:37 upstream 848acc8ffe1b 3c5eaa21 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream-386 kernel panic: kernel: panic_on_warn set ...
2026/08/04 15:26 upstream 848acc8ffe1b 3c5eaa21 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream-386 kernel panic: kernel: panic_on_warn set ...
2026/08/04 15:11 upstream 848acc8ffe1b 3c5eaa21 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream-386 kernel panic: kernel: panic_on_warn set ...
2026/08/04 14:57 upstream 848acc8ffe1b 3c5eaa21 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream-386 kernel panic: kernel: panic_on_warn set ...
2026/08/04 14:26 upstream 848acc8ffe1b 3c5eaa21 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream-386 kernel panic: kernel: panic_on_warn set ...
2026/08/04 14:08 upstream 848acc8ffe1b 3c5eaa21 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream-386 kernel panic: kernel: panic_on_warn set ...
2026/08/04 14:00 upstream 848acc8ffe1b 3c5eaa21 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream-386 kernel panic: kernel: panic_on_warn set ...
* Struck through repros no longer work on HEAD.