Oops: general protection fault, probably for non-canonical address 0xdffffc0000000006: 0000 [#1] SMP KASAN PTI
KASAN: null-ptr-deref in range [0x0000000000000030-0x0000000000000037]
CPU: 1 UID: 0 PID: 5835 Comm: syz-executor Not tainted 6.15.0-rc1-next-20250411-syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
RIP: 0010:write_special_inodes fs/jfs/jfs_logmgr.c:208 [inline]
RIP: 0010:jfs_flush_journal+0x9a5/0xed0 fs/jfs/jfs_logmgr.c:1582
Code: 9a fe 49 8d 5f f0 48 89 d8 48 c1 e8 03 42 80 3c 28 00 74 08 48 89 df e8 99 62 cb fe 48 8b 1b 48 83 c3 30 48 89 d8 48 c1 e8 03 <42> 80 3c 28 00 4c 8b 74 24 28 74 08 48 89 df e8 77 62 cb fe 48 8b
RSP: 0018:ffffc90003fb7b20 EFLAGS: 00010206
RAX: 0000000000000006 RBX: 0000000000000030 RCX: ffff888065878000
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc90003fb7c50 R08: ffffffff81fd4a7e R09: 0000000000000000
R10: ffffc90003fb7908 R11: fffff520007f6f50 R12: 0000000000000006
R13: dffffc0000000000 R14: ffff88805c3b3278 R15: ffff888028f18038
FS:  000055557483c500(0000) GS:ffff888125080000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000200000023000 CR3: 0000000066ee8000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 jfs_umount+0x170/0x3a0 fs/jfs/jfs_umount.c:58
 jfs_put_super+0x8a/0x190 fs/jfs/super.c:194
 generic_shutdown_super+0x139/0x2d0 fs/super.c:643
 kill_block_super+0x44/0x90 fs/super.c:1760
 deactivate_locked_super+0xc4/0x130 fs/super.c:474
 cleanup_mnt+0x422/0x4c0 fs/namespace.c:1435
 task_work_run+0x251/0x310 kernel/task_work.c:227
 resume_user_mode_work include/linux/resume_user_mode.h:50 [inline]
 exit_to_user_mode_loop kernel/entry/common.c:114 [inline]
 exit_to_user_mode_prepare include/linux/entry-common.h:329 [inline]
 __syscall_exit_to_user_mode_work kernel/entry/common.c:207 [inline]
 syscall_exit_to_user_mode+0x13f/0x340 kernel/entry/common.c:218
 do_syscall_64+0x100/0x230 arch/x86/entry/syscall_64.c:100
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f3e5218e497
Code: a8 ff ff ff f7 d8 64 89 01 48 83 c8 ff c3 0f 1f 44 00 00 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 a8 ff ff ff f7 d8 64 89 02 b8
RSP: 002b:00007ffcf5d2be28 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
RAX: 0000000000000000 RBX: 00007f3e5220e77c RCX: 00007f3e5218e497
RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007ffcf5d2bee0
RBP: 00007ffcf5d2bee0 R08: 0000000000000000 R09: 0000000000000000
R10: 00000000ffffffff R11: 0000000000000246 R12: 00007ffcf5d2cf70
R13: 00007f3e5220e77c R14: 000000000001de36 R15: 00007ffcf5d2cfb0
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:write_special_inodes fs/jfs/jfs_logmgr.c:208 [inline]
RIP: 0010:jfs_flush_journal+0x9a5/0xed0 fs/jfs/jfs_logmgr.c:1582
Code: 9a fe 49 8d 5f f0 48 89 d8 48 c1 e8 03 42 80 3c 28 00 74 08 48 89 df e8 99 62 cb fe 48 8b 1b 48 83 c3 30 48 89 d8 48 c1 e8 03 <42> 80 3c 28 00 4c 8b 74 24 28 74 08 48 89 df e8 77 62 cb fe 48 8b
RSP: 0018:ffffc90003fb7b20 EFLAGS: 00010206
RAX: 0000000000000006 RBX: 0000000000000030 RCX: ffff888065878000
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc90003fb7c50 R08: ffffffff81fd4a7e R09: 0000000000000000
R10: ffffc90003fb7908 R11: fffff520007f6f50 R12: 0000000000000006
R13: dffffc0000000000 R14: ffff88805c3b3278 R15: ffff888028f18038
FS:  000055557483c500(0000) GS:ffff888124f80000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
----------------
Code disassembly (best guess), 1 bytes skipped:
   0:	fe 49 8d             	decb   -0x73(%rcx)
   3:	5f                   	pop    %rdi
   4:	f0 48 89 d8          	lock mov %rbx,%rax
   8:	48 c1 e8 03          	shr    $0x3,%rax
   c:	42 80 3c 28 00       	cmpb   $0x0,(%rax,%r13,1)
  11:	74 08                	je     0x1b
  13:	48 89 df             	mov    %rbx,%rdi
  16:	e8 99 62 cb fe       	call   0xfecb62b4
  1b:	48 8b 1b             	mov    (%rbx),%rbx
  1e:	48 83 c3 30          	add    $0x30,%rbx
  22:	48 89 d8             	mov    %rbx,%rax
  25:	48 c1 e8 03          	shr    $0x3,%rax
* 29:	42 80 3c 28 00       	cmpb   $0x0,(%rax,%r13,1) <-- trapping instruction
  2e:	4c 8b 74 24 28       	mov    0x28(%rsp),%r14
  33:	74 08                	je     0x3d
  35:	48 89 df             	mov    %rbx,%rdi
  38:	e8 77 62 cb fe       	call   0xfecb62b4
  3d:	48                   	rex.W
  3e:	8b                   	.byte 0x8b