JFS: discard option not supported on device
ERROR: (device loop0): diRead: i_ino != di_number
JFS: discard option not supported on device
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: 8560 Comm: syz-executor140 Not tainted 4.14.295-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/11/2022
task: ffff8880af82e000 task.stack: ffff88808fab0000
RIP: 0010:lbmStartIO+0x14a/0x490 fs/jfs/jfs_logmgr.c:2143
RSP: 0018:ffff88808fab7988 EFLAGS: 00010202
RAX: dffffc0000000000 RBX: ffff8880aa5efe00 RCX: 0000000000000003
RDX: 000000000000001c RSI: 0000000000000000 RDI: 00000000000000e0
RBP: ffff88809b29c1c0 R08: 0000000000000001 R09: ffff88809b29c1c0
R10: ffff88809b29c247 R11: 0000000000000000 R12: ffff8880b3f5a940
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
FS:  0000555556f56300(0000) GS:ffff8880ba400000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ffed12e3000 CR3: 00000000a3466000 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
 lmNextPage.isra.0+0x263/0x700 fs/jfs/jfs_logmgr.c:637
 lmWriteRecord+0x8b2/0xe30 fs/jfs/jfs_logmgr.c:550
 lmLog+0x23f/0xa70 fs/jfs/jfs_logmgr.c:327
 logMOUNT fs/jfs/jfs_mount.c:507 [inline]
 jfs_mount_rw+0x368/0x430 fs/jfs/jfs_mount.c:280
 jfs_fill_super+0x78a/0xab0 fs/jfs/super.c:598
 mount_bdev+0x2b3/0x360 fs/super.c:1134
 mount_fs+0x92/0x2a0 fs/super.c:1237
 vfs_kern_mount.part.0+0x5b/0x470 fs/namespace.c:1046
 vfs_kern_mount fs/namespace.c:1036 [inline]
 do_new_mount fs/namespace.c:2572 [inline]
 do_mount+0xe65/0x2a30 fs/namespace.c:2905
 SYSC_mount fs/namespace.c:3121 [inline]
 SyS_mount+0xa8/0x120 fs/namespace.c:3098
 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292
 entry_SYSCALL_64_after_hwframe+0x46/0xbb
RIP: 0033:0x7f772c5b31ba
RSP: 002b:00007ffed12e2838 EFLAGS: 00000282 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f772c5b31ba
RDX: 0000000020000000 RSI: 0000000020000100 RDI: 00007ffed12e2850
RBP: 00007ffed12e2850 R08: 00007ffed12e2890 R09: 0000000000000002
R10: 0000000000000000 R11: 0000000000000282 R12: 0000000000000004
R13: 00007ffed12e2890 R14: 000000000000035a R15: 0000000020005270
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: ffff88808fab7988
---[ end trace 4a791d829647938e ]---
----------------
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