general protection fault, probably for non-canonical address 0xdffffc0000000008: 0000 [#1] PREEMPT SMP KASAN
KASAN: null-ptr-deref in range [0x0000000000000040-0x0000000000000047]
CPU: 0 PID: 12877 Comm: syz-executor Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/06/2026
RIP: 0010:write_special_inodes fs/jfs/jfs_logmgr.c:208 [inline]
RIP: 0010:jfs_flush_journal+0x989/0xe90 fs/jfs/jfs_logmgr.c:1582
Code: 1f b4 fe 4d 8d 75 f0 4c 89 f0 48 c1 e8 03 80 3c 18 00 74 08 4c 89 f7 e8 b5 b6 de fe 4d 8b 36 49 83 c6 40 4c 89 f0 48 c1 e8 03 <80> 3c 18 00 74 08 4c 89 f7 e8 99 b6 de fe 49 8b 3e e8 a1 1f b4 fe
RSP: 0018:ffffc90003a27b40 EFLAGS: 00010202
RAX: 0000000000000008 RBX: dffffc0000000000 RCX: f383a0b3f182bd00
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc90003a27c70 R08: 0000000000000004 R09: 0000000000000004
R10: ffffc90003a27a64 R11: fffff52000744f55 R12: 000000000000002a
R13: ffff88801cfc3038 R14: 0000000000000040 R15: ffff8880794f7228
FS:  000055558b2fd500(0000) GS:ffff8880b8c00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b2d123ffc CR3: 00000000556c7000 CR4: 00000000003506f0
Call Trace:
 <TASK>
 jfs_umount+0x156/0x3a0 fs/jfs/jfs_umount.c:58
 jfs_put_super+0x8c/0x190 fs/jfs/super.c:194
 generic_shutdown_super+0x134/0x2b0 fs/super.c:690
 kill_block_super+0x44/0x90 fs/super.c:1671
 deactivate_locked_super+0x9c/0x210 fs/super.c:479
 cleanup_mnt+0x3d7/0x460 fs/namespace.c:1259
 task_work_run+0x1d4/0x260 kernel/task_work.c:245
 resume_user_mode_work include/linux/resume_user_mode.h:49 [inline]
 exit_to_user_mode_loop+0xe6/0x110 kernel/entry/common.c:180
 exit_to_user_mode_prepare+0xee/0x180 kernel/entry/common.c:213
 __syscall_exit_to_user_mode_work kernel/entry/common.c:294 [inline]
 syscall_exit_to_user_mode+0x1a/0x50 kernel/entry/common.c:305
 do_syscall_64+0x61/0xb0 arch/x86/entry/common.c:82
 entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7f61007aa157
Code: a2 c7 05 9c 25 25 00 00 00 00 00 eb 96 e8 c1 13 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:00007ffd13f82648 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
RAX: 0000000000000000 RBX: 00007f6100837363 RCX: 00007f61007aa157
RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007ffd13f82700
RBP: 00007ffd13f82700 R08: 00007ffd13f83700 R09: 00000000ffffffff
R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffd13f83790
R13: 00007f6100837363 R14: 00000000000d4d9f R15: 00007ffd13f837d0
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:write_special_inodes fs/jfs/jfs_logmgr.c:208 [inline]
RIP: 0010:jfs_flush_journal+0x989/0xe90 fs/jfs/jfs_logmgr.c:1582
Code: 1f b4 fe 4d 8d 75 f0 4c 89 f0 48 c1 e8 03 80 3c 18 00 74 08 4c 89 f7 e8 b5 b6 de fe 4d 8b 36 49 83 c6 40 4c 89 f0 48 c1 e8 03 <80> 3c 18 00 74 08 4c 89 f7 e8 99 b6 de fe 49 8b 3e e8 a1 1f b4 fe
RSP: 0018:ffffc90003a27b40 EFLAGS: 00010202
RAX: 0000000000000008 RBX: dffffc0000000000 RCX: f383a0b3f182bd00
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc90003a27c70 R08: 0000000000000004 R09: 0000000000000004
R10: ffffc90003a27a64 R11: fffff52000744f55 R12: 000000000000002a
R13: ffff88801cfc3038 R14: 0000000000000040 R15: ffff8880794f7228
FS:  000055558b2fd500(0000) GS:ffff8880b8d00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000110c30f8b5 CR3: 00000000556c7000 CR4: 00000000003506e0
----------------
Code disassembly (best guess), 1 bytes skipped:
   0:	b4 fe                	mov    $0xfe,%ah
   2:	4d 8d 75 f0          	lea    -0x10(%r13),%r14
   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 b5 b6 de fe       	call   0xfedeb6d0
  1b:	4d 8b 36             	mov    (%r14),%r14
  1e:	49 83 c6 40          	add    $0x40,%r14
  22:	4c 89 f0             	mov    %r14,%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 f7             	mov    %r14,%rdi
  32:	e8 99 b6 de fe       	call   0xfedeb6d0
  37:	49 8b 3e             	mov    (%r14),%rdi
  3a:	e8 a1 1f b4 fe       	call   0xfeb41fe0