general protection fault, probably for non-canonical address 0xdffffc0000000006: 0000 [#1] PREEMPT SMP KASAN
KASAN: null-ptr-deref in range [0x0000000000000030-0x0000000000000037]
CPU: 0 PID: 9602 Comm: syz.4.1791 Not tainted 6.1.117-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
RIP: 0010:write_special_inodes fs/jfs/jfs_logmgr.c:208 [inline]
RIP: 0010:lmLogSync+0x224/0xad0 fs/jfs/jfs_logmgr.c:937
Code: ad fe 49 8d 5f f0 48 89 d8 48 c1 e8 03 42 80 3c 28 00 74 08 48 89 df e8 ea 87 d8 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 cd 87 d8 fe 48 8b 3b e8 d5 8a ad
RSP: 0018:ffffc900128c7a80 EFLAGS: 00010206
RAX: 0000000000000006 RBX: 0000000000000030 RCX: 6171e88cc7f26600
RDX: ffffc9000d074000 RSI: 00000000000019af RDI: 00000000000019b0
RBP: ffffc900128c7b88 R08: ffffffff81b71126 R09: ffffc900128c79d0
R10: 0000000000000000 R11: dffffc0000000001 R12: ffff88805af0b000
R13: dffffc0000000000 R14: 0000000000000000 R15: ffff888079053638
FS:  00007fd9be7ff6c0(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fd9be7fef98 CR3: 0000000062bfc000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 jfs_syncpt+0x79/0x90 fs/jfs/jfs_logmgr.c:1041
 jfs_sync_fs+0x86/0xa0 fs/jfs/super.c:685
 sync_filesystem+0xe8/0x220 fs/sync.c:56
 jfs_remount+0x132/0x6a0 fs/jfs/super.c:432
 reconfigure_super+0x43a/0x870 fs/super.c:977
 do_remount fs/namespace.c:2712 [inline]
 path_mount+0xe69/0x1090 fs/namespace.c:3378
 do_mount fs/namespace.c:3399 [inline]
 __do_sys_mount fs/namespace.c:3607 [inline]
 __se_sys_mount+0x2d5/0x3c0 fs/namespace.c:3584
 do_syscall_x64 arch/x86/entry/common.c:51 [inline]
 do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:81
 entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7fd9be97feba
Code: d8 64 89 02 48 c7 c0 ff ff ff ff eb a6 e8 de 1a 00 00 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fd9be7fee68 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007fd9be7feef0 RCX: 00007fd9be97feba
RDX: 0000000020000180 RSI: 0000000020000100 RDI: 0000000000000000
RBP: 0000000020000180 R08: 00007fd9be7feef0 R09: 0000000001a4243c
R10: 0000000001a4243c R11: 0000000000000246 R12: 0000000020000100
R13: 00007fd9be7feeb0 R14: 0000000000000000 R15: 0000000020000600
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:write_special_inodes fs/jfs/jfs_logmgr.c:208 [inline]
RIP: 0010:lmLogSync+0x224/0xad0 fs/jfs/jfs_logmgr.c:937
Code: ad fe 49 8d 5f f0 48 89 d8 48 c1 e8 03 42 80 3c 28 00 74 08 48 89 df e8 ea 87 d8 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 cd 87 d8 fe 48 8b 3b e8 d5 8a ad
RSP: 0018:ffffc900128c7a80 EFLAGS: 00010206
RAX: 0000000000000006 RBX: 0000000000000030 RCX: 6171e88cc7f26600
RDX: ffffc9000d074000 RSI: 00000000000019af RDI: 00000000000019b0
RBP: ffffc900128c7b88 R08: ffffffff81b71126 R09: ffffc900128c79d0
R10: 0000000000000000 R11: dffffc0000000001 R12: ffff88805af0b000
R13: dffffc0000000000 R14: 0000000000000000 R15: ffff888079053638
FS:  00007fd9be7ff6c0(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000555595399808 CR3: 0000000062bfc000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess):
   0:	ad                   	lods   %ds:(%rsi),%eax
   1:	fe 49 8d             	decb   -0x73(%rcx)
   4:	5f                   	pop    %rdi
   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 ea 87 d8 fe       	call   0xfed88806
  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 cd 87 d8 fe       	call   0xfed88806
  39:	48 8b 3b             	mov    (%rbx),%rdi
  3c:	e8                   	.byte 0xe8
  3d:	d5                   	(bad)
  3e:	8a                   	.byte 0x8a
  3f:	ad                   	lods   %ds:(%rsi),%eax