Oops: general protection fault, probably for non-canonical address 0xdffffc0000000006: 0000 [#1] SMP KASAN PTI
KASAN: null-ptr-deref in range [0x0000000000000030-0x0000000000000037]
CPU: 0 UID: 0 PID: 6235 Comm: syz-executor Not tainted syzkaller #0 PREEMPT_{RT,(full)} 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2026
RIP: 0010:write_special_inodes fs/jfs/jfs_logmgr.c:208 [inline]
RIP: 0010:jfs_flush_journal+0x81d/0xef0 fs/jfs/jfs_logmgr.c:1572
RIP: 0010:write_special_inodes fs/jfs/jfs_logmgr.c:208 [inline]
RIP: 0010:jfs_flush_journal+0x81d/0xef0 fs/jfs/jfs_logmgr.c:1572
Code: ea aa fe 4d 8d 77 f0 4c 89 f0 48 c1 e8 03 80 3c 18 00 74 08 4c 89 f7 e8 d1 77 d6 fe 4d 8b 26 49 83 c4 30 4c 89 e0 48 c1 e8 03 <80> 3c 18 00 74 08 4c 89 e7 e8 b5 77 d6 fe 49 8b 3c 24 e8 0c ea aa
RSP: 0018:ffffc90005e3fb00 EFLAGS: 00010206
RAX: 0000000000000006 RBX: dffffc0000000000 RCX: ffff888032241e80
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc90005e3fc30 R08: 0000000000000000 R09: 0000000000000000
R10: ffffc90005e3f8e8 R11: fffff52000bc7f4a R12: 0000000000000030
R13: ffff8880374f3218 R14: ffff888038e23628 R15: ffff888038e23638
FS:  0000555572a85500(0000) GS:ffff88812633c000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ffef1ad3d50 CR3: 000000003f1ae000 CR4: 00000000003526f0
Call Trace:
 <TASK>
 jfs_umount+0x178/0x3c0 fs/jfs/jfs_umount.c:58
 jfs_put_super+0x8c/0x190 fs/jfs/super.c:194
 generic_shutdown_super+0x13d/0x2d0 fs/super.c:646
 kill_block_super+0x44/0x90 fs/super.c:1725
 deactivate_locked_super+0xbc/0x130 fs/super.c:476
 cleanup_mnt+0x437/0x4d0 fs/namespace.c:1312
 task_work_run+0x1d9/0x270 kernel/task_work.c:233
 resume_user_mode_work include/linux/resume_user_mode.h:50 [inline]
 __exit_to_user_mode_loop kernel/entry/common.c:67 [inline]
 exit_to_user_mode_loop+0xed/0x480 kernel/entry/common.c:98
 __exit_to_user_mode_prepare include/linux/irq-entry-common.h:226 [inline]
 syscall_exit_to_user_mode_prepare include/linux/irq-entry-common.h:256 [inline]
 syscall_exit_to_user_mode include/linux/entry-common.h:325 [inline]
 do_syscall_64+0x32d/0xf80 arch/x86/entry/syscall_64.c:100
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7ff4e1a4d9d7
Code: a2 c7 05 1c fd 24 00 00 00 00 00 eb 96 e8 e1 12 00 00 90 31 f6 e9 09 00 00 00 66 0f 1f 84 00 00 00 00 00 b8 a6 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 01 c3 48 c7 c2 e8 ff ff ff f7 d8 64 89 02 b8
RSP: 002b:00007ffef1ad43a8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
RAX: 0000000000000000 RBX: 00007ff4e1ae2050 RCX: 00007ff4e1a4d9d7
RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007ffef1ad4460
RBP: 00007ffef1ad4460 R08: 00007ffef1ad5460 R09: 00000000ffffffff
R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffef1ad54f0
R13: 00007ff4e1ae2050 R14: 000000000007b282 R15: 00007ffef1ad5530
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:write_special_inodes fs/jfs/jfs_logmgr.c:208 [inline]
RIP: 0010:jfs_flush_journal+0x81d/0xef0 fs/jfs/jfs_logmgr.c:1572
Code: ea aa fe 4d 8d 77 f0 4c 89 f0 48 c1 e8 03 80 3c 18 00 74 08 4c 89 f7 e8 d1 77 d6 fe 4d 8b 26 49 83 c4 30 4c 89 e0 48 c1 e8 03 <80> 3c 18 00 74 08 4c 89 e7 e8 b5 77 d6 fe 49 8b 3c 24 e8 0c ea aa
RSP: 0018:ffffc90005e3fb00 EFLAGS: 00010206
RAX: 0000000000000006 RBX: dffffc0000000000 RCX: ffff888032241e80
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc90005e3fc30 R08: 0000000000000000 R09: 0000000000000000
R10: ffffc90005e3f8e8 R11: fffff52000bc7f4a R12: 0000000000000030
R13: ffff8880374f3218 R14: ffff888038e23628 R15: ffff888038e23638
FS:  0000555572a85500(0000) GS:ffff88812643c000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055557bf91a68 CR3: 000000003f1ae000 CR4: 00000000003526f0
----------------
Code disassembly (best guess), 1 bytes skipped:
   0:	aa                   	stos   %al,%es:(%rdi)
   1:	fe 4d 8d             	decb   -0x73(%rbp)
   4:	77 f0                	ja     0xfffffff6
   6:	4c 89 f0             	mov    %r14,%rax
   9:	48 c1 e8 03          	shr    $0x3,%rax
   d:	80 3c 18 00          	cmpb   $0x0,(%rax,%rbx,1)
  11:	74 08                	je     0x1b
  13:	4c 89 f7             	mov    %r14,%rdi
  16:	e8 d1 77 d6 fe       	call   0xfed677ec
  1b:	4d 8b 26             	mov    (%r14),%r12
  1e:	49 83 c4 30          	add    $0x30,%r12
  22:	4c 89 e0             	mov    %r12,%rax
  25:	48 c1 e8 03          	shr    $0x3,%rax
* 29:	80 3c 18 00          	cmpb   $0x0,(%rax,%rbx,1) <-- trapping instruction
  2d:	74 08                	je     0x37
  2f:	4c 89 e7             	mov    %r12,%rdi
  32:	e8 b5 77 d6 fe       	call   0xfed677ec
  37:	49 8b 3c 24          	mov    (%r12),%rdi
  3b:	e8                   	.byte 0xe8
  3c:	0c ea                	or     $0xea,%al
  3e:	aa                   	stos   %al,%es:(%rdi)