Oops: general protection fault, probably for non-canonical address 0xdffffc0000000006: 0000 [#1] SMP KASAN PTI
KASAN: null-ptr-deref in range [0x0000000000000030-0x0000000000000037]
CPU: 0 UID: 0 PID: 5827 Comm: syz-executor Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/02/2025
RIP: 0010:write_special_inodes fs/jfs/jfs_logmgr.c:208 [inline]
RIP: 0010:jfs_flush_journal+0x988/0xed0 fs/jfs/jfs_logmgr.c:1581
Code: fe ad fe 4d 8d 75 f0 4c 89 f0 48 c1 e8 03 80 3c 18 00 74 08 4c 89 f7 e8 26 55 dc fe 4d 8b 36 49 83 c6 30 4c 89 f0 48 c1 e8 03 <80> 3c 18 00 74 08 4c 89 f7 e8 0a 55 dc fe 49 8b 3e e8 c2 fe ad fe
RSP: 0000:ffffc9000416f980 EFLAGS: 00010206
RAX: 0000000000000006 RBX: dffffc0000000000 RCX: ffff88802f3cbd00
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc9000416fab0 R08: ffffc9000416f8cf R09: 0000000000000000
R10: ffffc9000416f768 R11: fffff5200082df1a R12: 0000000000000000
R13: ffff888027d3b438 R14: 0000000000000030 R15: ffff888073b93228
FS:  0000000000000000(0000) GS:ffff888125ecc000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f370c201002 CR3: 0000000074496000 CR4: 00000000003526f0
Call Trace:
 <TASK>
 jfs_umount+0x178/0x3c0 fs/jfs/jfs_umount.c:58
 jfs_put_super+0x8c/0x190 fs/jfs/super.c:194
 generic_shutdown_super+0x135/0x2c0 fs/super.c:643
 kill_block_super+0x44/0x90 fs/super.c:1728
 deactivate_locked_super+0xbc/0x130 fs/super.c:474
 cleanup_mnt+0x425/0x4c0 fs/namespace.c:1317
 task_work_run+0x1d4/0x260 kernel/task_work.c:233
 exit_task_work include/linux/task_work.h:40 [inline]
 do_exit+0x6bd/0x2300 kernel/exit.c:970
 do_group_exit+0x21c/0x2d0 kernel/exit.c:1111
 __do_sys_exit_group kernel/exit.c:1122 [inline]
 __se_sys_exit_group kernel/exit.c:1120 [inline]
 __x64_sys_exit_group+0x3f/0x40 kernel/exit.c:1120
 x64_sys_call+0x2210/0x2210 arch/x86/include/generated/asm/syscalls_64.h:232
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xfa/0xfa0 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fc28038f6c9
Code: Unable to access opcode bytes at 0x7fc28038f69f.
RSP: 002b:00007fff07c15268 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
RAX: ffffffffffffffda RBX: 00007fc280411da2 RCX: 00007fc28038f6c9
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000001
RBP: 0000000000000002 R08: 00007fff07c13007 R09: 00007fff07c16520
R10: 0000000000000000 R11: 0000000000000246 R12: 00007fff07c16520
R13: 00007fc280411d7d R14: 0000000000016b9b R15: 00007fff07c186e0
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:write_special_inodes fs/jfs/jfs_logmgr.c:208 [inline]
RIP: 0010:jfs_flush_journal+0x988/0xed0 fs/jfs/jfs_logmgr.c:1581
Code: fe ad fe 4d 8d 75 f0 4c 89 f0 48 c1 e8 03 80 3c 18 00 74 08 4c 89 f7 e8 26 55 dc fe 4d 8b 36 49 83 c6 30 4c 89 f0 48 c1 e8 03 <80> 3c 18 00 74 08 4c 89 f7 e8 0a 55 dc fe 49 8b 3e e8 c2 fe ad fe
RSP: 0000:ffffc9000416f980 EFLAGS: 00010206
RAX: 0000000000000006 RBX: dffffc0000000000 RCX: ffff88802f3cbd00
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc9000416fab0 R08: ffffc9000416f8cf R09: 0000000000000000
R10: ffffc9000416f768 R11: fffff5200082df1a R12: 0000000000000000
R13: ffff888027d3b438 R14: 0000000000000030 R15: ffff888073b93228
FS:  0000000000000000(0000) GS:ffff888125fcc000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f10a99e7dac CR3: 0000000031df4000 CR4: 00000000003526f0
----------------
Code disassembly (best guess), 1 bytes skipped:
   0:	ad                   	lods   %ds:(%rsi),%eax
   1:	fe 4d 8d             	decb   -0x73(%rbp)
   4:	75 f0                	jne    0xfffffff6
   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 26 55 dc fe       	call   0xfedc5541
  1b:	4d 8b 36             	mov    (%r14),%r14
  1e:	49 83 c6 30          	add    $0x30,%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 0a 55 dc fe       	call   0xfedc5541
  37:	49 8b 3e             	mov    (%r14),%rdi
  3a:	e8 c2 fe ad fe       	call   0xfeadff01