ERROR: (device loop0): remounting filesystem as read-only
ERROR: (device loop0): dbFindCtl: Corrupt dmapctl page
jfs_create: dtInsert returned -EIO
ERROR: (device (efault)): jfs_create:
Oops: general protection fault, probably for non-canonical address 0xdffffc000000000a: 0000 [#1] PREEMPT SMP KASAN NOPTI
KASAN: null-ptr-deref in range [0x0000000000000050-0x0000000000000057]
CPU: 0 UID: 0 PID: 5313 Comm: syz-executor116 Not tainted 6.12.0-rc7-syzkaller #0
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014
RIP: 0010:sb_rdonly include/linux/fs.h:2292 [inline]
RIP: 0010:jfs_handle_error fs/jfs/super.c:66 [inline]
RIP: 0010:jfs_error+0x159/0x2e0 fs/jfs/super.c:98
Code: 08 48 c7 c7 40 e9 42 8c 48 89 74 24 08 4c 89 f9 e8 4c 22 9c 08 4d 8d 65 50 4d 89 e7 49 c1 ef 03 48 b8 00 00 00 00 00 fc ff df <41> 80 3c 07 00 74 08 4c 89 e7 e8 48 5e d6 fe 49 8b 1c 24 48 89 de
RSP: 0018:ffffc9000ce4fa20 EFLAGS: 00010206
RAX: dffffc0000000000 RBX: dffffc0000000000 RCX: 1c32466592978100
RDX: 0000000000000000 RSI: 0000000080000000 RDI: 0000000000000000
RBP: ffffc9000ce4fb30 R08: ffffffff8174a13c R09: 1ffff11003f8519a
R10: dffffc0000000000 R11: ffffed1003f8519b R12: 0000000000000050
R13: 0000000000000000 R14: 1ffff920019c9f4c R15: 000000000000000a
FS: 0000555595511380(0000) GS:ffff88801fc00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055fdcfd20000 CR3: 0000000043170000 CR4: 0000000000352ef0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
<TASK>
jfs_create+0x81d/0xbb0 fs/jfs/namei.c:140
vfs_create+0x23c/0x3d0 fs/namei.c:3294
do_mknodat+0x447/0x5b0 fs/namei.c:4185
__do_sys_mknod fs/namei.c:4218 [inline]
__se_sys_mknod fs/namei.c:4216 [inline]
__x64_sys_mknod+0x8c/0xa0 fs/namei.c:4216
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f17ac91d9f9
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 61 17 00 00 90 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 b8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fff56943258 EFLAGS: 00000246 ORIG_RAX: 0000000000000085
RAX: ffffffffffffffda RBX: 00007fff56943428 RCX: 00007f17ac91d9f9
RDX: 0000000000000701 RSI: 0000000000000000 RDI: 0000000020000000
RBP: 00007f17ac996610 R08: 0000000020000000 R09: 00007fff56943428
R10: 00007fff56943120 R11: 0000000000000246 R12: 0000000000000001
R13: 00007fff56943418 R14: 0000000000000001 R15: 0000000000000001
</TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:sb_rdonly include/linux/fs.h:2292 [inline]
RIP: 0010:jfs_handle_error fs/jfs/super.c:66 [inline]
RIP: 0010:jfs_error+0x159/0x2e0 fs/jfs/super.c:98
Code: 08 48 c7 c7 40 e9 42 8c 48 89 74 24 08 4c 89 f9 e8 4c 22 9c 08 4d 8d 65 50 4d 89 e7 49 c1 ef 03 48 b8 00 00 00 00 00 fc ff df <41> 80 3c 07 00 74 08 4c 89 e7 e8 48 5e d6 fe 49 8b 1c 24 48 89 de
RSP: 0018:ffffc9000ce4fa20 EFLAGS: 00010206
RAX: dffffc0000000000 RBX: dffffc0000000000 RCX: 1c32466592978100
RDX: 0000000000000000 RSI: 0000000080000000 RDI: 0000000000000000
RBP: ffffc9000ce4fb30 R08: ffffffff8174a13c R09: 1ffff11003f8519a
R10: dffffc0000000000 R11: ffffed1003f8519b R12: 0000000000000050
R13: 0000000000000000 R14: 1ffff920019c9f4c R15: 000000000000000a
FS: 0000555595511380(0000) GS:ffff88801fc00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055fdcfd20000 CR3: 0000000043170000 CR4: 0000000000352ef0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess):
0: 08 48 c7 or %cl,-0x39(%rax)
3: c7 40 e9 42 8c 48 89 movl $0x89488c42,-0x17(%rax)
a: 74 24 je 0x30
c: 08 4c 89 f9 or %cl,-0x7(%rcx,%rcx,4)
10: e8 4c 22 9c 08 call 0x89c2261
15: 4d 8d 65 50 lea 0x50(%r13),%r12
19: 4d 89 e7 mov %r12,%r15
1c: 49 c1 ef 03 shr $0x3,%r15
20: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax
27: fc ff df
* 2a: 41 80 3c 07 00 cmpb $0x0,(%r15,%rax,1) <-- trapping instruction
2f: 74 08 je 0x39
31: 4c 89 e7 mov %r12,%rdi
34: e8 48 5e d6 fe call 0xfed65e81
39: 49 8b 1c 24 mov (%r12),%rbx
3d: 48 89 de mov %rbx,%rsi