loop0: detected capacity change from 0 to 32768
=======================================================
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.
=======================================================
*** Log Is Dirty ! ***
lmLogInit: exit(-22)
lmLogOpen: exit(-22)
jfs_dirty_inode called on read-only volume
Is remount racy?
ERROR: (device loop0): txBegin: read-only filesystem

jfs_dirty_inode called on read-only volume
Is remount racy?
jfs_dirty_inode called on read-only volume
Is remount racy?
jfs_dirty_inode called on read-only volume
Is remount racy?
Oops: general protection fault, probably for non-canonical address 0xdffffc00000000cf: 0000 [#1] SMP KASAN NOPTI
KASAN: null-ptr-deref in range [0x0000000000000678-0x000000000000067f]
CPU: 0 UID: 0 PID: 5314 Comm: syz.0.0 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
RIP: 0010:JFS_SBI fs/jfs/jfs_incore.h:217 [inline]
RIP: 0010:txEnd+0xb4/0x530 fs/jfs/jfs_txnmgr.c:508
Code: 49 8d 5e 20 48 89 d8 48 c1 e8 03 42 80 3c 28 00 74 08 48 89 df e8 fc 0a ca fe 41 bf 78 06 00 00 4c 03 3b 4c 89 f8 48 c1 e8 03 <42> 80 3c 28 00 74 08 4c 89 ff e8 dd 0a ca fe 49 8b 1f 48 83 c3 30
RSP: 0018:ffffc9000e21f720 EFLAGS: 00010206
RAX: 00000000000000cf RBX: ffffc90000fa9020 RCX: ffffffff9a7a2501
RDX: 0000000000000001 RSI: ffffffff8e234a87 RDI: 00000000ffffffff
RBP: ffffc9000e21f990 R08: ffffffff9057d337 R09: 1ffffffff20afa66
R10: dffffc0000000000 R11: fffffbfff20afa67 R12: 00000000ffffffe2
R13: dffffc0000000000 R14: ffffc90000fa9000 R15: 0000000000000678
FS:  00007f2d65f1d6c0(0000) GS:ffff88808c533000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000556b2aa17168 CR3: 000000000e730000 CR4: 0000000000352ef0
Call Trace:
 <TASK>
 jfs_create+0x2e9/0xae0 fs/jfs/namei.c:160
 lookup_open+0xc0d/0x1a40 fs/namei.c:4567
 open_last_lookups fs/namei.c:4767 [inline]
 path_openat+0x677/0x1d60 fs/namei.c:4997
 do_file_open+0x23e/0x4a0 fs/namei.c:5029
 do_sys_openat2+0x115/0x200 fs/open.c:1417
 do_sys_open fs/open.c:1423 [inline]
 __do_sys_creat fs/open.c:1501 [inline]
 __se_sys_creat fs/open.c:1495 [inline]
 __x64_sys_creat+0x8f/0xc0 fs/open.c:1495
 do_syscall_x64 arch/x86/entry/syscall_64.c:61 [inline]
 do_syscall_64+0x166/0x520 arch/x86/entry/syscall_64.c:84
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f2d64f9e0d9
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 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 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f2d65f1cfe8 EFLAGS: 00000246 ORIG_RAX: 0000000000000055
RAX: ffffffffffffffda RBX: 00007f2d65225fa0 RCX: 00007f2d64f9e0d9
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000200000000100
RBP: 00007f2d65035024 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f2d65226038 R14: 00007f2d65225fa0 R15: 00007fff50a394b8
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:JFS_SBI fs/jfs/jfs_incore.h:217 [inline]
RIP: 0010:txEnd+0xb4/0x530 fs/jfs/jfs_txnmgr.c:508
Code: 49 8d 5e 20 48 89 d8 48 c1 e8 03 42 80 3c 28 00 74 08 48 89 df e8 fc 0a ca fe 41 bf 78 06 00 00 4c 03 3b 4c 89 f8 48 c1 e8 03 <42> 80 3c 28 00 74 08 4c 89 ff e8 dd 0a ca fe 49 8b 1f 48 83 c3 30
RSP: 0018:ffffc9000e21f720 EFLAGS: 00010206
RAX: 00000000000000cf RBX: ffffc90000fa9020 RCX: ffffffff9a7a2501
RDX: 0000000000000001 RSI: ffffffff8e234a87 RDI: 00000000ffffffff
RBP: ffffc9000e21f990 R08: ffffffff9057d337 R09: 1ffffffff20afa66
R10: dffffc0000000000 R11: fffffbfff20afa67 R12: 00000000ffffffe2
R13: dffffc0000000000 R14: ffffc90000fa9000 R15: 0000000000000678
FS:  00007f2d65f1d6c0(0000) GS:ffff88808c533000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000556b2aa17168 CR3: 000000000e730000 CR4: 0000000000352ef0
----------------
Code disassembly (best guess):
   0:	49 8d 5e 20          	lea    0x20(%r14),%rbx
   4:	48 89 d8             	mov    %rbx,%rax
   7:	48 c1 e8 03          	shr    $0x3,%rax
   b:	42 80 3c 28 00       	cmpb   $0x0,(%rax,%r13,1)
  10:	74 08                	je     0x1a
  12:	48 89 df             	mov    %rbx,%rdi
  15:	e8 fc 0a ca fe       	call   0xfeca0b16
  1a:	41 bf 78 06 00 00    	mov    $0x678,%r15d
  20:	4c 03 3b             	add    (%rbx),%r15
  23:	4c 89 f8             	mov    %r15,%rax
  26:	48 c1 e8 03          	shr    $0x3,%rax
* 2a:	42 80 3c 28 00       	cmpb   $0x0,(%rax,%r13,1) <-- trapping instruction
  2f:	74 08                	je     0x39
  31:	4c 89 ff             	mov    %r15,%rdi
  34:	e8 dd 0a ca fe       	call   0xfeca0b16
  39:	49 8b 1f             	mov    (%r15),%rbx
  3c:	48 83 c3 30          	add    $0x30,%rbx