gfs2: fsid=syz:syz.0: first mount done, others may mount
gfs2: fsid=syz:syz.0: Error 10 writing to journal, jid=0
Oops: stack segment: 0000 [#1] SMP KASAN NOPTI
CPU: 0 UID: 0 PID: 5304 Comm: syz-executor172 Not tainted 6.15.0-rc3-syzkaller-00342-g5bc1018675ec #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:gfs2_glock_dq+0x60/0xb20 fs/gfs2/glock.c:1657
Code: 4c 89 ff e8 12 2c 37 fe 4c 89 64 24 28 4c 89 7c 24 30 4d 8b 2f 4d 8d 7d 10 4c 89 fd 48 c1 ed 03 48 b8 00 00 00 00 00 fc ff df <80> 7c 05 00 00 74 08 4c 89 ff e8 e1 2b 37 fe 49 8b 45 10 48 89 44
RSP: 0018:ffffc9000d357c20 EFLAGS: 00010202
RAX: dffffc0000000000 RBX: dffffc0000000000 RCX: ffff88801e8a8000
RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffffc9000d357d00
RBP: 0000000000000002 R08: ffff888042107a3b R09: 1ffff11008420f47
R10: dffffc0000000000 R11: ffffed1008420f48 R12: 1ffff92001a6afa2
R13: 0000000000000000 R14: ffffc9000d357d00 R15: 0000000000000010
FS: 00007feba52726c0(0000) GS:ffff88808d6cc000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000000 CR3: 000000003fd8e000 CR4: 0000000000352ef0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
<TASK>
gfs2_glock_dq_uninit+0x25/0xb0 fs/gfs2/glock.c:1723
gfs2_seek_data+0x16c/0x240 fs/gfs2/inode.c:2133
gfs2_llseek+0x1a4/0x240 fs/gfs2/file.c:75
vfs_llseek fs/read_write.c:387 [inline]
ksys_lseek fs/read_write.c:400 [inline]
__do_sys_lseek fs/read_write.c:410 [inline]
__se_sys_lseek fs/read_write.c:408 [inline]
__x64_sys_lseek+0x14c/0x1e0 fs/read_write.c:408
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0xf6/0x210 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7feba52bd689
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 81 18 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 b0 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007feba5272218 EFLAGS: 00000246 ORIG_RAX: 0000000000000008
RAX: ffffffffffffffda RBX: 00007feba537c648 RCX: 00007feba52bd689
RDX: 0000000000000003 RSI: 0000000002000005 RDI: 0000000000000008
RBP: 00007feba537c640 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007feba5349028
R13: 0031656c69662f2e R14: 0000200000000240 R15: 0000200000000140
</TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:gfs2_glock_dq+0x60/0xb20 fs/gfs2/glock.c:1657
Code: 4c 89 ff e8 12 2c 37 fe 4c 89 64 24 28 4c 89 7c 24 30 4d 8b 2f 4d 8d 7d 10 4c 89 fd 48 c1 ed 03 48 b8 00 00 00 00 00 fc ff df <80> 7c 05 00 00 74 08 4c 89 ff e8 e1 2b 37 fe 49 8b 45 10 48 89 44
RSP: 0018:ffffc9000d357c20 EFLAGS: 00010202
RAX: dffffc0000000000 RBX: dffffc0000000000 RCX: ffff88801e8a8000
RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffffc9000d357d00
RBP: 0000000000000002 R08: ffff888042107a3b R09: 1ffff11008420f47
R10: dffffc0000000000 R11: ffffed1008420f48 R12: 1ffff92001a6afa2
R13: 0000000000000000 R14: ffffc9000d357d00 R15: 0000000000000010
FS: 00007feba52726c0(0000) GS:ffff88808d6cc000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007feba52f9090 CR3: 000000003fd8e000 CR4: 0000000000352ef0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess):
0: 4c 89 ff mov %r15,%rdi
3: e8 12 2c 37 fe call 0xfe372c1a
8: 4c 89 64 24 28 mov %r12,0x28(%rsp)
d: 4c 89 7c 24 30 mov %r15,0x30(%rsp)
12: 4d 8b 2f mov (%r15),%r13
15: 4d 8d 7d 10 lea 0x10(%r13),%r15
19: 4c 89 fd mov %r15,%rbp
1c: 48 c1 ed 03 shr $0x3,%rbp
20: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax
27: fc ff df
* 2a: 80 7c 05 00 00 cmpb $0x0,0x0(%rbp,%rax,1) <-- trapping instruction
2f: 74 08 je 0x39
31: 4c 89 ff mov %r15,%rdi
34: e8 e1 2b 37 fe call 0xfe372c1a
39: 49 8b 45 10 mov 0x10(%r13),%rax
3d: 48 rex.W
3e: 89 .byte 0x89
3f: 44 rex.R