Oops: general protection fault, probably for non-canonical address 0xdffffc0000000006: 0000 [#1] SMP KASAN NOPTI
KASAN: null-ptr-deref in range [0x0000000000000030-0x0000000000000037]
CPU: 0 UID: 0 PID: 12307 Comm: syz-executor Tainted: G             L      syzkaller #0 PREEMPT(full) 
Tainted: [L]=SOFTLOCKUP
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
RIP: 0010:write_special_inodes+0x71/0x170 fs/jfs/jfs_logmgr.c:207
Code: df e8 c3 27 68 fe 48 8d 7b 10 48 89 f8 48 c1 e8 03 80 3c 28 00 0f 85 c0 00 00 00 4c 8b 6b 10 49 8d 7d 30 48 89 f8 48 c1 e8 03 <80> 3c 28 00 0f 85 da 00 00 00 49 8b 7d 30 2e e8 eb 0c 23 08 48 8d
RSP: 0018:ffffc9000dc87bb0 EFLAGS: 00010216
RAX: 0000000000000006 RBX: ffff888028f0b400 RCX: ffffffff81ab197f
RDX: ffff888027c6db80 RSI: ffffffff8356abdd RDI: 0000000000000030
RBP: dffffc0000000000 R08: 0000000000000007 R09: 0000000000000000
R10: 0000000000000000 R11: ffff888027c6e6b0 R12: ffffffff81f65930
R13: 0000000000000000 R14: ffff88805542c800 R15: 1ffff1100aa85945
FS:  000055558f997500(0000) GS:ffff8881248f6000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f182fbb5d58 CR3: 0000000029cb6000 CR4: 0000000000350ef0
Call Trace:
 <TASK>
 jfs_flush_journal+0x475/0xa60 fs/jfs/jfs_logmgr.c:1581
 jfs_umount+0x17a/0x440 fs/jfs/jfs_umount.c:58
 jfs_put_super+0x88/0x1d0 fs/jfs/super.c:194
 generic_shutdown_super+0x156/0x390 fs/super.c:643
 kill_block_super+0x3b/0x90 fs/super.c:1722
 deactivate_locked_super+0xc1/0x1a0 fs/super.c:474
 deactivate_super fs/super.c:507 [inline]
 deactivate_super+0xde/0x100 fs/super.c:503
 cleanup_mnt+0x225/0x450 fs/namespace.c:1318
 task_work_run+0x150/0x240 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:44 [inline]
 exit_to_user_mode_loop+0xfb/0x540 kernel/entry/common.c:75
 __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_work include/linux/entry-common.h:159 [inline]
 syscall_exit_to_user_mode include/linux/entry-common.h:194 [inline]
 do_syscall_64+0x4ee/0xf80 arch/x86/entry/syscall_64.c:100
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fe0bbd90a77
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:00007ffe3f2f1008 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
RAX: 0000000000000000 RBX: 00007fe0bbe13d7d RCX: 00007fe0bbd90a77
RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007ffe3f2f10c0
RBP: 00007ffe3f2f10c0 R08: 0000000000000000 R09: 0000000000000000
R10: 00000000ffffffff R11: 0000000000000246 R12: 00007ffe3f2f2150
R13: 00007fe0bbe13d7d R14: 00000000000d119c R15: 00007ffe3f2f2190
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:write_special_inodes+0x71/0x170 fs/jfs/jfs_logmgr.c:207
Code: df e8 c3 27 68 fe 48 8d 7b 10 48 89 f8 48 c1 e8 03 80 3c 28 00 0f 85 c0 00 00 00 4c 8b 6b 10 49 8d 7d 30 48 89 f8 48 c1 e8 03 <80> 3c 28 00 0f 85 da 00 00 00 49 8b 7d 30 2e e8 eb 0c 23 08 48 8d
RSP: 0018:ffffc9000dc87bb0 EFLAGS: 00010216
RAX: 0000000000000006 RBX: ffff888028f0b400 RCX: ffffffff81ab197f
RDX: ffff888027c6db80 RSI: ffffffff8356abdd RDI: 0000000000000030
RBP: dffffc0000000000 R08: 0000000000000007 R09: 0000000000000000
R10: 0000000000000000 R11: ffff888027c6e6b0 R12: ffffffff81f65930
R13: 0000000000000000 R14: ffff88805542c800 R15: 1ffff1100aa85945
FS:  000055558f997500(0000) GS:ffff8881248f6000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f182fbe7dac CR3: 0000000029cb6000 CR4: 0000000000350ef0
----------------
Code disassembly (best guess), 1 bytes skipped:
   0:	e8 c3 27 68 fe       	call   0xfe6827c8
   5:	48 8d 7b 10          	lea    0x10(%rbx),%rdi
   9:	48 89 f8             	mov    %rdi,%rax
   c:	48 c1 e8 03          	shr    $0x3,%rax
  10:	80 3c 28 00          	cmpb   $0x0,(%rax,%rbp,1)
  14:	0f 85 c0 00 00 00    	jne    0xda
  1a:	4c 8b 6b 10          	mov    0x10(%rbx),%r13
  1e:	49 8d 7d 30          	lea    0x30(%r13),%rdi
  22:	48 89 f8             	mov    %rdi,%rax
  25:	48 c1 e8 03          	shr    $0x3,%rax
* 29:	80 3c 28 00          	cmpb   $0x0,(%rax,%rbp,1) <-- trapping instruction
  2d:	0f 85 da 00 00 00    	jne    0x10d
  33:	49 8b 7d 30          	mov    0x30(%r13),%rdi
  37:	2e e8 eb 0c 23 08    	cs call 0x8230d28
  3d:	48                   	rex.W
  3e:	8d                   	.byte 0x8d