general protection fault, probably for non-canonical address 0xdffffc0000000006: 0000 [#1] PREEMPT SMP KASAN
KASAN: null-ptr-deref in range [0x0000000000000030-0x0000000000000037]
CPU: 1 PID: 4166 Comm: syz-executor342 Not tainted 5.15.179-syzkaller #0
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:lmLogSync+0x224/0xad0 fs/jfs/jfs_logmgr.c:945
Code: b8 fe 49 8d 5f f0 48 89 d8 48 c1 e8 03 42 80 3c 28 00 74 08 48 89 df e8 7a d5 da fe 48 8b 1b 48 83 c3 30 48 89 d8 48 c1 e8 03 <42> 80 3c 28 00 74 08 48 89 df e8 5d d5 da fe 48 8b 3b e8 e5 92 b8
RSP: 0018:ffffc90002dcfbe0 EFLAGS: 00010206
RAX: 0000000000000006 RBX: 0000000000000030 RCX: 8703fea90479bc00
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc90002dcfcf8 R08: ffffffff81a846c6 R09: ffffc90002dcfb48
R10: 0000000000000000 R11: dffffc0000000001 R12: ffff88802b1eb800
R13: dffffc0000000000 R14: 0000000000000000 R15: ffff888018f96c38
FS:  0000555591fea480(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ffe4d353c48 CR3: 0000000024ae3000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 jfs_syncpt+0x79/0x90 fs/jfs/jfs_logmgr.c:1049
 jfs_sync_fs+0x86/0xa0 fs/jfs/super.c:690
 sync_filesystem+0xe8/0x220 fs/sync.c:56
 generic_shutdown_super+0x6b/0x310 fs/super.c:448
 kill_block_super+0x7a/0xe0 fs/super.c:1427
 deactivate_locked_super+0xa0/0x110 fs/super.c:335
 cleanup_mnt+0x44e/0x500 fs/namespace.c:1143
 task_work_run+0x129/0x1a0 kernel/task_work.c:188
 tracehook_notify_resume include/linux/tracehook.h:189 [inline]
 exit_to_user_mode_loop+0x106/0x130 kernel/entry/common.c:181
 exit_to_user_mode_prepare+0xb1/0x140 kernel/entry/common.c:214
 __syscall_exit_to_user_mode_work kernel/entry/common.c:296 [inline]
 syscall_exit_to_user_mode+0x5d/0x240 kernel/entry/common.c:307
 do_syscall_64+0x47/0xb0 arch/x86/entry/common.c:86
 entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7fed2bbd0e77
Code: 07 00 48 83 c4 08 5b 5d c3 66 2e 0f 1f 84 00 00 00 00 00 c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 b8 a6 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 01 c3 48 c7 c2 b8 ff ff ff f7 d8 64 89 02 b8
RSP: 002b:00007ffe4d3543f8 EFLAGS: 00000202 ORIG_RAX: 00000000000000a6
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007fed2bbd0e77
RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007ffe4d3544b0
RBP: 00007ffe4d3544b0 R08: 0000000000000000 R09: 0000000000000000
R10: 00000000ffffffff R11: 0000000000000202 R12: 00007ffe4d355520
R13: 0000555591feb7c0 R14: 431bde82d7b634db R15: 00007ffe4d355540
 </TASK>
Modules linked in:
---[ end trace be81ffd8866ba4f8 ]---
RIP: 0010:write_special_inodes fs/jfs/jfs_logmgr.c:208 [inline]
RIP: 0010:lmLogSync+0x224/0xad0 fs/jfs/jfs_logmgr.c:945
Code: b8 fe 49 8d 5f f0 48 89 d8 48 c1 e8 03 42 80 3c 28 00 74 08 48 89 df e8 7a d5 da fe 48 8b 1b 48 83 c3 30 48 89 d8 48 c1 e8 03 <42> 80 3c 28 00 74 08 48 89 df e8 5d d5 da fe 48 8b 3b e8 e5 92 b8
RSP: 0018:ffffc90002dcfbe0 EFLAGS: 00010206
RAX: 0000000000000006 RBX: 0000000000000030 RCX: 8703fea90479bc00
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc90002dcfcf8 R08: ffffffff81a846c6 R09: ffffc90002dcfb48
R10: 0000000000000000 R11: dffffc0000000001 R12: ffff88802b1eb800
R13: dffffc0000000000 R14: 0000000000000000 R15: ffff888018f96c38
FS:  0000555591fea480(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ffe4d356000 CR3: 0000000024ae3000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess):
   0:	b8 fe 49 8d 5f       	mov    $0x5f8d49fe,%eax
   5:	f0 48 89 d8          	lock mov %rbx,%rax
   9:	48 c1 e8 03          	shr    $0x3,%rax
   d:	42 80 3c 28 00       	cmpb   $0x0,(%rax,%r13,1)
  12:	74 08                	je     0x1c
  14:	48 89 df             	mov    %rbx,%rdi
  17:	e8 7a d5 da fe       	call   0xfedad596
  1c:	48 8b 1b             	mov    (%rbx),%rbx
  1f:	48 83 c3 30          	add    $0x30,%rbx
  23:	48 89 d8             	mov    %rbx,%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:	48 89 df             	mov    %rbx,%rdi
  34:	e8 5d d5 da fe       	call   0xfedad596
  39:	48 8b 3b             	mov    (%rbx),%rdi
  3c:	e8                   	.byte 0xe8
  3d:	e5 92                	in     $0x92,%eax
  3f:	b8                   	.byte 0xb8