general protection fault in raid5

ID	Workflow	Result	Correct	Bug	Created	Started	Finished	Revision
1c7ce1f0	repro-c	Reproduced: ✅	❓	general protection fault in raid5_quiesce	2026/10/18 20:32	2026/10/18 20:32	2026/10/18 21:51	432c0077
f7f4c3a1	assessment-security	DenialOfService: ✅ Exploitable: ❌ FilesystemTrigger: ❌ NetworkTrigger: ❌ PeripheralTrigger: ❌ RemoteTrigger: ❌ Unprivileged: ❌ UserNamespace: ❌ VMGuestTrigger: ❌ VMHostTrigger: ❌	❓	general protection fault in raid5_quiesce	2026/09/30 07:55	2026/09/30 07:55	2026/09/30 08:10	7808aef4

Title	Replies (including bot)	Last reply
[PATCH] md: don't allow changing the personality of a failed array	1 (1)	2026/10/19 19:36
[syzbot] [raid?] general protection fault in raid5_quiesce	0 (1)	2026/10/19 05:11

Title

Replies (including bot)

Last reply

[PATCH] md: don't allow changing the personality of a failed array

1 (1)

2026/10/19 19:36

[syzbot] [raid?] general protection fault in raid5_quiesce

0 (1)

2026/10/19 05:11

Kernel	Title	Rank 🛈	Repro	Cause bisect	Fix bisect	Count	Last	Reported	Patched	Status
linux-5.15	general protection fault in raid5_quiesce	2				1	26d	26d	0/3	upstream: reported on 2026/09/23 05:05

Rank 🛈

linux-5.15

general protection fault in raid5_quiesce

26d

0/3

upstream: reported on 2026/09/23 05:05

Created	Duration	User	Patch	Repo	Result
2026/10/19 04:19	50m	retest repro		git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git f909e534f5e34feb2ea2701d54df63e21aa506fc	report job log log

Created

Duration

User

Patch

Repo

Result

2026/10/19 04:19

50m

retest repro

git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git f909e534f5e34feb2ea2701d54df63e21aa506fc

report job log log

md/raid:md0: not enough operational devices (1/3 failed) md/raid:md0: failed to run raid set. Oops: general protection fault, probably for non-canonical address 0xdffffc000000000c: 0000 [#1] SMP KASAN PTI KASAN: null-ptr-deref in range [0x0000000000000060-0x0000000000000067] CPU: 0 UID: 0 PID: 5902 Comm: syz-executor169 Not tainted syzkaller #0 PREEMPT_{RT,(full)} Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/07/2026 RIP: 0010:kasan_byte_accessible+0x12/0x30 mm/kasan/generic.c:210 Code: 79 ff ff ff 0f 1f 40 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 0f 1f 40 d6 48 c1 ef 03 48 b8 00 00 00 00 00 fc ff df <0f> b6 04 07 3c 08 0f 92 c0 e9 90 e7 2a 09 cc 66 66 66 66 66 66 2e RSP: 0018:ffffc9000544f708 EFLAGS: 00010206 RAX: dffffc0000000000 RBX: ffffffff8b5cf203 RCX: 8000000000000001 RDX: 0000000000000000 RSI: ffffffff8b5cf203 RDI: 000000000000000c RBP: ffffc9000544f870 R08: 0000000000000001 R09: 0000000000000000 R10: dffffc0000000000 R11: ffffffff87ff0a50 R12: 0000000000000060 R13: 0000000000000000 R14: 0000000000000060 R15: 0000000000000001 FS: 000055556c882400(0000) GS:ffff8881249b9000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000055d585e02cd0 CR3: 0000000044162000 CR4: 00000000003526f0 Call Trace: <TASK> __kasan_check_byte+0x12/0x40 mm/kasan/common.c:584 kasan_check_byte include/linux/kasan.h:402 [inline] lock_acquire+0x7d/0x350 kernel/locking/lockdep.c:5916 rt_spin_lock+0x83/0x400 kernel/locking/spinlock_rt.c:56 spin_lock_irq include/linux/spinlock_rt.h:96 [inline] lock_all_device_hash_locks_irq drivers/md/raid5.c:107 [inline] raid5_quiesce+0xc2/0x8a0 drivers/md/raid5.c:-1 __md_stop_writes+0xeb/0x4b0 drivers/md/md.c:7038 md_set_readonly+0x330/0x560 drivers/md/md.c:7138 array_state_store+0x584/0xe90 drivers/md/md.c:4720 md_attr_store+0x3b7/0x640 drivers/md/md.c:6158 kernfs_fop_write_iter+0x3a5/0x540 fs/kernfs/file.c:345 new_sync_write fs/read_write.c:595 [inline] vfs_write+0x61e/0xbb0 fs/read_write.c:687 ksys_write+0x156/0x270 fs/read_write.c:739 do_syscall_x64 arch/x86/entry/syscall_64.c:61 [inline] do_syscall_64+0x166/0x520 arch/x86/entry/syscall_64.c:84 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fb4d4570f77 Code: 48 89 fa 4c 89 df e8 98 1d 00 00 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 1a 5b c3 0f 1f 84 00 00 00 00 00 48 8b 44 24 10 0f 05 <5b> c3 0f 1f 80 00 00 00 00 83 e2 39 83 fa 08 75 de e8 23 ff ff ff RSP: 002b:00007ffcae126a10 EFLAGS: 00000202 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 000055556c882400 RCX: 00007fb4d4570f77 RDX: 0000000000000008 RSI: 00007fb4d45aa11f RDI: 0000000000000005 RBP: 000055556c8823d8 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000000006 R13: ffffffffffffffff R14: 0000000000000005 R15: 00000000ffffffff </TASK> Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:kasan_byte_accessible+0x12/0x30 mm/kasan/generic.c:210 Code: 79 ff ff ff 0f 1f 40 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 0f 1f 40 d6 48 c1 ef 03 48 b8 00 00 00 00 00 fc ff df <0f> b6 04 07 3c 08 0f 92 c0 e9 90 e7 2a 09 cc 66 66 66 66 66 66 2e RSP: 0018:ffffc9000544f708 EFLAGS: 00010206 RAX: dffffc0000000000 RBX: ffffffff8b5cf203 RCX: 8000000000000001 RDX: 0000000000000000 RSI: ffffffff8b5cf203 RDI: 000000000000000c RBP: ffffc9000544f870 R08: 0000000000000001 R09: 0000000000000000 R10: dffffc0000000000 R11: ffffffff87ff0a50 R12: 0000000000000060 R13: 0000000000000000 R14: 0000000000000060 R15: 0000000000000001 FS: 000055556c882400(0000) GS:ffff8881249b9000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000055d585e02cd0 CR3: 0000000044162000 CR4: 00000000003526f0 ---------------- Code disassembly (best guess), 4 bytes skipped: 0: 0f 1f 40 00 nopl 0x0(%rax) 4: 90 nop 5: 90 nop 6: 90 nop 7: 90 nop 8: 90 nop 9: 90 nop a: 90 nop b: 90 nop c: 90 nop d: 90 nop e: 90 nop f: 90 nop 10: 90 nop 11: 90 nop 12: 90 nop 13: 90 nop 14: 0f 1f 40 d6 nopl -0x2a(%rax) 18: 48 c1 ef 03 shr $0x3,%rdi 1c: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax 23: fc ff df * 26: 0f b6 04 07 movzbl (%rdi,%rax,1),%eax <-- trapping instruction 2a: 3c 08 cmp $0x8,%al 2c: 0f 92 c0 setb %al 2f: e9 90 e7 2a 09 jmp 0x92ae7c4 34: cc int3 35: 66 data16 36: 66 data16 37: 66 data16 38: 66 data16 39: 66 data16 3a: 66 data16 3b: 2e cs

Crashes (2):
Time	Kernel	Commit	Syzkaller	Config	Log	Report	Syz repro	C repro	VM info	Assets (help?)	Manager	Title
2026/10/19 05:10	git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git	f909e534f5e3	a3c7249d	.config	console log	report		C			ci-upstream-kasan-gce-smack-root	general protection fault in raid5_quiesce
2026/09/28 10:52	upstream	72d3fcf802c4	a3c7249d	.config	console log	report			info	[disk image] [vmlinux] [kernel image]	ci-upstream-kasan-gce-smack-root	general protection fault in raid5_quiesce

Crashes (2):

Assets (help?)