kasan: CONFIG_KASAN_INLINE enabled
kasan: GPF could be caused by NULL-ptr deref or user memory access
general protection fault: 0000 [#1] PREEMPT SMP KASAN
Modules linked in:
CPU: 0 PID: 13644 Comm: syz-executor.5 Not tainted 4.14.302-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022
task: ffff88808cebc5c0 task.stack: ffff88803ffc0000
RIP: 0010:lbmStartIO+0x14a/0x490 fs/jfs/jfs_logmgr.c:2143
RSP: 0018:ffff88803ffc7ca8 EFLAGS: 00010202
RAX: dffffc0000000000 RBX: ffff88809e4ec800 RCX: 0000000000000003
RDX: 000000000000001c RSI: ffffffff8305e6eb RDI: 00000000000000e0
RBP: ffff88809a57a180 R08: 0000000000000001 R09: ffff88809a57a180
R10: ffff88809a57a207 R11: 0000000000000000 R12: ffff8880b3e86000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
FS:  00007f5cafbc1700(0000) GS:ffff8880ba400000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ffd98e24ff8 CR3: 000000009f963000 CR4: 00000000003406f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 lbmWrite+0x254/0x380 fs/jfs/jfs_logmgr.c:2092
 lmGCwrite+0x3d4/0x4d0 fs/jfs/jfs_logmgr.c:806
 jfs_flush_journal.part.0+0x3e6/0x600 fs/jfs/jfs_logmgr.c:1570
 jfs_flush_journal+0x23/0x30 fs/jfs/jfs_logmgr.c:1537
 jfs_fsync+0x18b/0x1e0 fs/jfs/file.c:45
 vfs_fsync_range+0x103/0x260 fs/sync.c:196
 vfs_fsync fs/sync.c:210 [inline]
 do_fsync fs/sync.c:220 [inline]
 SYSC_fsync fs/sync.c:228 [inline]
 SyS_fsync+0x3a/0x80 fs/sync.c:226
 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292
 entry_SYSCALL_64_after_hwframe+0x5e/0xd3
RIP: 0033:0x7f5cb164f0d9
RSP: 002b:00007f5cafbc1168 EFLAGS: 00000246 ORIG_RAX: 000000000000004a
RAX: ffffffffffffffda RBX: 00007f5cb176ef80 RCX: 00007f5cb164f0d9
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000004
RBP: 00007f5cb16aaae9 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fff3118931f R14: 00007f5cafbc1300 R15: 0000000000022000
Code: 48 c1 ea 03 80 3c 02 00 0f 85 06 03 00 00 48 b8 00 00 00 00 00 fc ff df 4d 8b 6c 24 20 49 8d bd e0 00 00 00 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 d5 02 00 00 4d 8b ad e0 00 00 00 4d 39 ee 74 
RIP: lbmStartIO+0x14a/0x490 fs/jfs/jfs_logmgr.c:2143 RSP: ffff88803ffc7ca8
---[ end trace 1701305bd175a6ec ]---
----------------
Code disassembly (best guess):
   0:	48 c1 ea 03          	shr    $0x3,%rdx
   4:	80 3c 02 00          	cmpb   $0x0,(%rdx,%rax,1)
   8:	0f 85 06 03 00 00    	jne    0x314
   e:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  15:	fc ff df
  18:	4d 8b 6c 24 20       	mov    0x20(%r12),%r13
  1d:	49 8d bd e0 00 00 00 	lea    0xe0(%r13),%rdi
  24:	48 89 fa             	mov    %rdi,%rdx
  27:	48 c1 ea 03          	shr    $0x3,%rdx
* 2b:	80 3c 02 00          	cmpb   $0x0,(%rdx,%rax,1) <-- trapping instruction
  2f:	0f 85 d5 02 00 00    	jne    0x30a
  35:	4d 8b ad e0 00 00 00 	mov    0xe0(%r13),%r13
  3c:	4d 39 ee             	cmp    %r13,%r14
  3f:	74                   	.byte 0x74