syzbot


general protection fault in btrfs_simple_end_io

Status: upstream: reported on 2024/05/25 16:18
Subsystems: btrfs
[Documentation on labels]
Reported-by: syzbot+8cfa88c4efc731f03e7e@syzkaller.appspotmail.com
First crash: 25d, last: 3d17h
Discussions (1)
Title Replies (including bot) Last reply
[syzbot] [btrfs?] general protection fault in btrfs_simple_end_io 0 (1) 2024/05/25 16:18

Sample crash report:
Oops: general protection fault, probably for non-canonical address 0xe01ffbf11002a963: 0000 [#1] PREEMPT SMP KASAN NOPTI
KASAN: maybe wild-memory-access in range [0x00ffff8880154b18-0x00ffff8880154b1f]
CPU: 1 PID: 29 Comm: ksoftirqd/1 Not tainted 6.10.0-rc2-syzkaller-00366-g771ed66105de #0
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
RIP: 0010:__lock_acquire+0xe3e/0x3b30 kernel/locking/lockdep.c:5005
Code: 11 00 00 39 05 33 a6 1f 12 0f 82 be 05 00 00 ba 01 00 00 00 e9 e4 00 00 00 48 b8 00 00 00 00 00 fc ff df 4c 89 e2 48 c1 ea 03 <80> 3c 02 00 0f 85 82 1f 00 00 49 81 3c 24 e0 1d e3 92 0f 84 98 f2
RSP: 0018:ffffc9000056f938 EFLAGS: 00010006
RAX: dffffc0000000000 RBX: 0000000000000001 RCX: 0000000000000000
RDX: 001ffff11002a963 RSI: ffff888016710000 RDI: 00ffff8880154b18
RBP: 0000000000000000 R08: 0000000000000001 R09: 0000000000000001
R10: ffffffff8fe2c617 R11: 0000000000000000 R12: 00ffff8880154b18
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000001
FS:  0000000000000000(0000) GS:ffff88802c100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000c000476188 CR3: 0000000057e6c000 CR4: 0000000000350ef0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 lock_acquire kernel/locking/lockdep.c:5754 [inline]
 lock_acquire+0x1b1/0x560 kernel/locking/lockdep.c:5719
 __raw_spin_lock include/linux/spinlock_api_smp.h:133 [inline]
 _raw_spin_lock+0x2e/0x40 kernel/locking/spinlock.c:154
 __queue_work+0x39e/0x1020 kernel/workqueue.c:2319
 queue_work_on+0x11a/0x140 kernel/workqueue.c:2410
 queue_work include/linux/workqueue.h:621 [inline]
 btrfs_simple_end_io+0x2d5/0x390 fs/btrfs/bio.c:379
 bio_endio+0x644/0x760 block/bio.c:1636
 blk_update_request+0x704/0x1850 block/blk-mq.c:929
 blk_mq_end_request+0x5b/0x620 block/blk-mq.c:1057
 lo_complete_rq+0x232/0x2f0 drivers/block/loop.c:366
 blk_complete_reqs+0xae/0xf0 block/blk-mq.c:1132
 handle_softirqs+0x216/0x8f0 kernel/softirq.c:554
 run_ksoftirqd kernel/softirq.c:928 [inline]
 run_ksoftirqd+0x3a/0x60 kernel/softirq.c:920
 smpboot_thread_fn+0x661/0xa10 kernel/smpboot.c:164
 kthread+0x2c1/0x3a0 kernel/kthread.c:389
 ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:__lock_acquire+0xe3e/0x3b30 kernel/locking/lockdep.c:5005
Code: 11 00 00 39 05 33 a6 1f 12 0f 82 be 05 00 00 ba 01 00 00 00 e9 e4 00 00 00 48 b8 00 00 00 00 00 fc ff df 4c 89 e2 48 c1 ea 03 <80> 3c 02 00 0f 85 82 1f 00 00 49 81 3c 24 e0 1d e3 92 0f 84 98 f2
RSP: 0018:ffffc9000056f938 EFLAGS: 00010006
RAX: dffffc0000000000 RBX: 0000000000000001 RCX: 0000000000000000
RDX: 001ffff11002a963 RSI: ffff888016710000 RDI: 00ffff8880154b18
RBP: 0000000000000000 R08: 0000000000000001 R09: 0000000000000001
R10: ffffffff8fe2c617 R11: 0000000000000000 R12: 00ffff8880154b18
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000001
FS:  0000000000000000(0000) GS:ffff88802c100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000c000476188 CR3: 0000000057e6c000 CR4: 0000000000350ef0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess):
   0:	11 00                	adc    %eax,(%rax)
   2:	00 39                	add    %bh,(%rcx)
   4:	05 33 a6 1f 12       	add    $0x121fa633,%eax
   9:	0f 82 be 05 00 00    	jb     0x5cd
   f:	ba 01 00 00 00       	mov    $0x1,%edx
  14:	e9 e4 00 00 00       	jmp    0xfd
  19:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  20:	fc ff df
  23:	4c 89 e2             	mov    %r12,%rdx
  26:	48 c1 ea 03          	shr    $0x3,%rdx
* 2a:	80 3c 02 00          	cmpb   $0x0,(%rdx,%rax,1) <-- trapping instruction
  2e:	0f 85 82 1f 00 00    	jne    0x1fb6
  34:	49 81 3c 24 e0 1d e3 	cmpq   $0xffffffff92e31de0,(%r12)
  3b:	92
  3c:	0f                   	.byte 0xf
  3d:	84                   	.byte 0x84
  3e:	98                   	cwtl
  3f:	f2                   	repnz

Crashes (17):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2024/06/09 16:57 upstream 771ed66105de c2e07261 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream-386 general protection fault in btrfs_simple_end_io
2024/06/09 12:46 upstream 061d1af7b030 c2e07261 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream-386 general protection fault in btrfs_simple_end_io
2024/06/08 02:33 upstream 96e09b8f8166 c2e07261 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream-386 general protection fault in btrfs_simple_end_io
2024/06/08 00:55 upstream 96e09b8f8166 c2e07261 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream-386 general protection fault in btrfs_simple_end_io
2024/06/07 07:21 upstream d30d0e49da71 c2e07261 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream-386 general protection fault in btrfs_simple_end_io
2024/06/04 01:16 upstream f06ce441457d c2e07261 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream-386 general protection fault in btrfs_simple_end_io
2024/06/03 03:09 upstream c3f38fa61af7 c2e07261 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream-386 general protection fault in btrfs_simple_end_io
2024/06/01 12:12 upstream cc8ed4d0a848 c2e07261 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream-386 general protection fault in btrfs_simple_end_io
2024/05/31 10:00 upstream 4a4be1ad3a6e c2e07261 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream-386 general protection fault in btrfs_simple_end_io
2024/05/31 02:30 upstream 4a4be1ad3a6e c2e07261 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream-386 general protection fault in btrfs_simple_end_io
2024/05/30 00:35 upstream 4a4be1ad3a6e c2e07261 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream-386 general protection fault in btrfs_simple_end_io
2024/05/29 08:26 upstream e0cce98fe279 c2e07261 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream-386 general protection fault in btrfs_simple_end_io
2024/05/25 16:17 upstream 56fb6f92854f c2e07261 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream-386 general protection fault in btrfs_simple_end_io
2024/05/23 20:34 upstream c760b3725e52 c2e07261 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream-386 general protection fault in btrfs_simple_end_io
2024/05/22 17:48 upstream 29c73fc794c8 c2e07261 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream-386 general protection fault in btrfs_simple_end_io
2024/05/21 05:41 upstream 6e51b4b5bbc0 c2e07261 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream-386 general protection fault in btrfs_simple_end_io
2024/05/18 13:04 upstream 4b377b4868ef c2e07261 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream-386 general protection fault in btrfs_simple_end_io
* Struck through repros no longer work on HEAD.