general protection fault in md_handle

ID	Workflow	Result	Correct	Bug	Created	Started	Finished	Revision
c149739f	repro-c	Reproduced: ✅	❓	general protection fault in md_handle_request	2026/08/27 19:17	2026/08/27 19:42	2026/08/27 20:48	bd6de8ec
f54a6241	repro-c	Reproduced: ✅	❓	general protection fault in md_handle_request	2026/08/25 12:32	2026/08/25 12:32	2026/08/25 12:49	4eb7b671
fab348d6	assessment-security	DenialOfService: ✅ Exploitable: ❌ FilesystemTrigger: ❌ NetworkTrigger: ❌ PeripheralTrigger: ❌ RemoteTrigger: ❌ Unprivileged: ❌ UserNamespace: ❌ VMGuestTrigger: ✅ VMHostTrigger: ❌	❓	general protection fault in md_handle_request	2026/08/22 00:14	2026/08/22 00:14	2026/08/22 01:08	1e72964b

Created	Duration	User	Patch	Repo	Result
2026/08/26 09:22	12m	nogikh@google.com		git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git 818bebeb63dd6bf5f4e07e145f6cdbace520a34c	report job log log
2026/08/25 12:52	21m	nogikh@google.com		upstream	error job log

Created

Duration

User

Patch

Repo

Result

2026/08/26 09:22

12m

nogikh@google.com

git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git 818bebeb63dd6bf5f4e07e145f6cdbace520a34c

report job log log

2026/08/25 12:52

21m

nogikh@google.com

upstream

error job log

Oops: general protection fault, probably for non-canonical address 0xdffffc0000000003: 0000 [#1] SMP KASAN PTI KASAN: null-ptr-deref in range [0x0000000000000018-0x000000000000001f] CPU: 0 UID: 0 PID: 18351 Comm: syz.7.2889 Tainted: G L syzkaller #0 PREEMPT(full) Tainted: [L]=SOFTLOCKUP Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026 RIP: 0010:md_handle_request+0xae2/0xe60 drivers/md/md.c:417 Code: 24 90 00 00 00 48 8b 84 24 a8 00 00 00 42 80 3c 20 00 74 08 48 89 df e8 dc 43 a4 f9 48 8b 1b 48 83 c3 18 48 89 d8 48 c1 e8 03 <42> 80 3c 20 00 74 08 48 89 df e8 bf 43 a4 f9 4c 8b 1b 48 8b bc 24 RSP: 0018:ffffc90004237580 EFLAGS: 00010206 RAX: 0000000000000003 RBX: 0000000000000018 RCX: 0000000000080000 RDX: ffffc9002361c000 RSI: 0000000000000603 RDI: 0000000000000604 RBP: ffffc90004237738 R08: 5e00000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: ffffffff8ed5ca60 R12: dffffc0000000000 R13: 1ffff92000846f68 R14: ffff88801df540c8 R15: ffff88801df54238 FS: 00007fe90d9836c0(0000) GS:ffff888124cda000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f18f65eb7c0 CR3: 000000008e500000 CR4: 00000000003526f0 Call Trace: <TASK> __submit_bio+0x27f/0x340 block/blk-core.c:681 __submit_bio_noacct block/blk-core.c:724 [inline] submit_bio_noacct_nocheck+0x4e8/0xa40 block/blk-core.c:792 bio_await block/bio.c:1580 [inline] submit_bio_wait+0x12a/0x250 block/bio.c:1598 __blkdev_direct_IO_simple block/fops.c:98 [inline] blkdev_direct_IO+0x1104/0x17b0 block/fops.c:429 blkdev_direct_write+0x7c/0x140 block/fops.c:699 blkdev_write_iter+0x52d/0x700 block/fops.c:767 new_sync_write fs/read_write.c:595 [inline] vfs_write+0x612/0xba0 fs/read_write.c:687 ksys_pwrite64 fs/read_write.c:794 [inline] __do_sys_pwrite64 fs/read_write.c:802 [inline] __se_sys_pwrite64 fs/read_write.c:799 [inline] __x64_sys_pwrite64+0x196/0x220 fs/read_write.c:799 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: 0033:0x7fe90cb9e0d9 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:00007fe90d983028 EFLAGS: 00000246 ORIG_RAX: 0000000000000012 RAX: ffffffffffffffda RBX: 00007fe90ce26360 RCX: 00007fe90cb9e0d9 RDX: 0000000000001000 RSI: 0000200000001000 RDI: 0000000000000003 RBP: 00007fe90cc35024 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fe90ce263f8 R14: 00007fe90ce26360 R15: 00007ffca569d1f8 </TASK> Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:md_handle_request+0xae2/0xe60 drivers/md/md.c:417 Code: 24 90 00 00 00 48 8b 84 24 a8 00 00 00 42 80 3c 20 00 74 08 48 89 df e8 dc 43 a4 f9 48 8b 1b 48 83 c3 18 48 89 d8 48 c1 e8 03 <42> 80 3c 20 00 74 08 48 89 df e8 bf 43 a4 f9 4c 8b 1b 48 8b bc 24 RSP: 0018:ffffc90004237580 EFLAGS: 00010206 RAX: 0000000000000003 RBX: 0000000000000018 RCX: 0000000000080000 RDX: ffffc9002361c000 RSI: 0000000000000603 RDI: 0000000000000604 RBP: ffffc90004237738 R08: 5e00000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: ffffffff8ed5ca60 R12: dffffc0000000000 R13: 1ffff92000846f68 R14: ffff88801df540c8 R15: ffff88801df54238 FS: 00007fe90d9836c0(0000) GS:ffff888124cda000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f3011303000 CR3: 000000008e500000 CR4: 00000000003526f0 ---------------- Code disassembly (best guess): 0: 24 90 and $0x90,%al 2: 00 00 add %al,(%rax) 4: 00 48 8b add %cl,-0x75(%rax) 7: 84 24 a8 test %ah,(%rax,%rbp,4) a: 00 00 add %al,(%rax) c: 00 42 80 add %al,-0x80(%rdx) f: 3c 20 cmp $0x20,%al 11: 00 74 08 48 add %dh,0x48(%rax,%rcx,1) 15: 89 df mov %ebx,%edi 17: e8 dc 43 a4 f9 call 0xf9a443f8 1c: 48 8b 1b mov (%rbx),%rbx 1f: 48 83 c3 18 add $0x18,%rbx 23: 48 89 d8 mov %rbx,%rax 26: 48 c1 e8 03 shr $0x3,%rax * 2a: 42 80 3c 20 00 cmpb $0x0,(%rax,%r12,1) <-- trapping instruction 2f: 74 08 je 0x39 31: 48 89 df mov %rbx,%rdi 34: e8 bf 43 a4 f9 call 0xf9a443f8 39: 4c 8b 1b mov (%rbx),%r11 3c: 48 rex.W 3d: 8b .byte 0x8b 3e: bc .byte 0xbc 3f: 24 .byte 0x24

Crashes (1):
Time	Kernel	Commit	Syzkaller	Config	Log	Report	Syz repro	C repro	VM info	Assets (help?)	Manager	Title
2026/08/20 23:45	linux-next	7079a12d7506	1e72964b	.config	console log	report			info	[disk image] [vmlinux] [kernel image]	ci-upstream-linux-next-kasan-gce-root	general protection fault in md_handle_request

Crashes (1):

Assets (help?)