bcachefs (loop0): going read-only
bcachefs (loop0): finished waiting for writes to stop
bcachefs (loop0): flushing journal and stopping allocators, journal seq 31
bcachefs (loop0): flushing journal and stopping allocators complete, journal seq 31
bcachefs (loop0): clean shutdown complete, journal seq 32
bcachefs (loop0): marking filesystem clean
=======================================================
WARNING: The mand mount option has been deprecated and
and is ignored by this kernel. Remove the mand
option from the mount to silence this warning.
=======================================================
bcachefs (loop0): shutting down
Oops: general protection fault, probably for non-canonical address 0xdffffc0000000029: 0000 [#1] SMP KASAN NOPTI
KASAN: null-ptr-deref in range [0x0000000000000148-0x000000000000014f]
CPU: 0 UID: 0 PID: 5325 Comm: syz.0.0 Not tainted 6.14.0-syzkaller-05877-g1a9239bb4253 #0 PREEMPT(full)
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014
RIP: 0010:kasan_byte_accessible+0x12/0x20 mm/kasan/generic.c:199
Code: 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 66 0f 1f 00 48 c1 ef 03 48 b8 00 00 00 00 00 fc ff df <0f> b6 04 07 3c 08 0f 92 c0 c3 cc cc cc cc 90 90 90 90 90 90 90 90
RSP: 0018:ffffc9000d3bf6d8 EFLAGS: 00010202
RAX: dffffc0000000000 RBX: 0000000000000148 RCX: 0000000000000000
RDX: 0000000000000000 RSI: ffffffff8c226d1c RDI: 0000000000000029
RBP: ffffffff93611020 R08: 0000000000000001 R09: 0000000000000000
R10: dffffc0000000000 R11: ffffed10088dd9bf R12: 0000000000000001
R13: 0000000000000000 R14: ffffffff8c226d1c R15: 0000000000000148
FS: 00007f18387d46c0(0000) GS:ffff88808c60f000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00002000000000c0 CR3: 000000004373e000 CR4: 0000000000352ef0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
<TASK>
__kasan_check_byte+0x14/0x40 mm/kasan/common.c:556
kasan_check_byte include/linux/kasan.h:399 [inline]
lock_acquire+0x89/0x2f0 kernel/locking/lockdep.c:5840
down_write+0x9c/0x220 kernel/locking/rwsem.c:1577
inode_lock include/linux/fs.h:867 [inline]
simple_recursive_removal+0x9a/0x8f0 fs/libfs.c:615
debugfs_remove+0x49/0x70 fs/debugfs/inode.c:805
__bch2_fs_stop+0x292/0x5b0 fs/bcachefs/super.c:643
bch2_fs_get_tree+0xd43/0x17b0 fs/bcachefs/fs.c:2303
vfs_get_tree+0x90/0x2b0 fs/super.c:1759
do_new_mount+0x2cf/0xb70 fs/namespace.c:3878
do_mount fs/namespace.c:4218 [inline]
__do_sys_mount fs/namespace.c:4429 [inline]
__se_sys_mount+0x38c/0x400 fs/namespace.c:4406
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0xf3/0x230 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f183c38d169
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 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 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f18387d4038 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007f183c5a6080 RCX: 00007f183c38d169
RDX: 00002000000000c0 RSI: 0000200000005b00 RDI: 0000200000005ac0
RBP: 00007f183c40e2a0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000018642 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f183c5a6080 R15: 00007ffdd77e6b98
</TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:kasan_byte_accessible+0x12/0x20 mm/kasan/generic.c:199
Code: 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 66 0f 1f 00 48 c1 ef 03 48 b8 00 00 00 00 00 fc ff df <0f> b6 04 07 3c 08 0f 92 c0 c3 cc cc cc cc 90 90 90 90 90 90 90 90
RSP: 0018:ffffc9000d3bf6d8 EFLAGS: 00010202
RAX: dffffc0000000000 RBX: 0000000000000148 RCX: 0000000000000000
RDX: 0000000000000000 RSI: ffffffff8c226d1c RDI: 0000000000000029
RBP: ffffffff93611020 R08: 0000000000000001 R09: 0000000000000000
R10: dffffc0000000000 R11: ffffed10088dd9bf R12: 0000000000000001
R13: 0000000000000000 R14: ffffffff8c226d1c R15: 0000000000000148
FS: 00007f18387d46c0(0000) GS:ffff88808c60f000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000200000000040 CR3: 000000004373e000 CR4: 0000000000352ef0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess):
0: 0f 1f 84 00 00 00 00 nopl 0x0(%rax,%rax,1)
7: 00
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: 90 nop
15: 90 nop
16: 90 nop
17: 90 nop
18: 66 0f 1f 00 nopw (%rax)
1c: 48 c1 ef 03 shr $0x3,%rdi
20: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax
27: fc ff df
* 2a: 0f b6 04 07 movzbl (%rdi,%rax,1),%eax <-- trapping instruction
2e: 3c 08 cmp $0x8,%al
30: 0f 92 c0 setb %al
33: c3 ret
34: cc int3
35: cc int3
36: cc int3
37: cc int3
38: 90 nop
39: 90 nop
3a: 90 nop
3b: 90 nop
3c: 90 nop
3d: 90 nop
3e: 90 nop
3f: 90 nop