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: 5840 Comm: syz-executor Tainted: G        W           6.16.0-syzkaller-11568-gd632ab86aff2 #0 PREEMPT_{RT,(full)} 
Tainted: [W]=WARN
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025
RIP: 0010:write_special_inodes fs/jfs/jfs_logmgr.c:208 [inline]
RIP: 0010:jfs_flush_journal+0x988/0xed0 fs/jfs/jfs_logmgr.c:1582
Code: fd bd fe 4d 8d 75 f0 4c 89 f0 48 c1 e8 03 80 3c 18 00 74 08 4c 89 f7 e8 46 b8 e6 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 2a b8 e6 fe 49 8b 3e e8 02 fd bd fe
RSP: 0018:ffffc90004be7b20 EFLAGS: 00010206
RAX: 0000000000000006 RBX: dffffc0000000000 RCX: ffff88802f641dc0
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc90004be7c50 R08: 0000000000000000 R09: 0000000000000000
R10: ffffc90004be7908 R11: fffff5200097cf4e R12: 0000000000000001
R13: ffff888010954038 R14: 0000000000000030 R15: ffff888021be22d8
FS:  0000555569f6a500(0000) GS:ffff8881269cd000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f7da9f3f160 CR3: 000000002732c000 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+0x132/0x2c0 fs/super.c:643
 kill_block_super+0x44/0x90 fs/super.c:1766
 deactivate_locked_super+0xbc/0x130 fs/super.c:474
 cleanup_mnt+0x425/0x4c0 fs/namespace.c:1378
 task_work_run+0x1d1/0x260 kernel/task_work.c:227
 resume_user_mode_work include/linux/resume_user_mode.h:50 [inline]
 exit_to_user_mode_loop+0xec/0x110 kernel/entry/common.c:43
 exit_to_user_mode_prepare include/linux/irq-entry-common.h:225 [inline]
 syscall_exit_to_user_mode_work include/linux/entry-common.h:175 [inline]
 syscall_exit_to_user_mode include/linux/entry-common.h:210 [inline]
 do_syscall_64+0x2bd/0x3b0 arch/x86/entry/syscall_64.c:100
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fe673befe97
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:00007ffd825e42b8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
RAX: 0000000000000000 RBX: 00007fe673c71bdd RCX: 00007fe673befe97
RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007ffd825e4370
RBP: 00007ffd825e4370 R08: 0000000000000000 R09: 0000000000000000
R10: 00000000ffffffff R11: 0000000000000246 R12: 00007ffd825e5400
R13: 00007fe673c71bdd R14: 000000000002e20a R15: 00007ffd825e5440
 </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:1582
Code: fd bd fe 4d 8d 75 f0 4c 89 f0 48 c1 e8 03 80 3c 18 00 74 08 4c 89 f7 e8 46 b8 e6 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 2a b8 e6 fe 49 8b 3e e8 02 fd bd fe
RSP: 0018:ffffc90004be7b20 EFLAGS: 00010206
RAX: 0000000000000006 RBX: dffffc0000000000 RCX: ffff88802f641dc0
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc90004be7c50 R08: 0000000000000000 R09: 0000000000000000
R10: ffffc90004be7908 R11: fffff5200097cf4e R12: 0000000000000001
R13: ffff888010954038 R14: 0000000000000030 R15: ffff888021be22d8
FS:  0000555569f6a500(0000) GS:ffff8881269cd000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f7da9f3f160 CR3: 000000002732c000 CR4: 00000000003526f0
----------------
Code disassembly (best guess):
   0:	fd                   	std
   1:	bd fe 4d 8d 75       	mov    $0x758d4dfe,%ebp
   6:	f0 4c 89 f0          	lock mov %r14,%rax
   a:	48 c1 e8 03          	shr    $0x3,%rax
   e:	80 3c 18 00          	cmpb   $0x0,(%rax,%rbx,1)
  12:	74 08                	je     0x1c
  14:	4c 89 f7             	mov    %r14,%rdi
  17:	e8 46 b8 e6 fe       	call   0xfee6b862
  1c:	4d 8b 36             	mov    (%r14),%r14
  1f:	49 83 c6 30          	add    $0x30,%r14
  23:	4c 89 f0             	mov    %r14,%rax
  26:	48 c1 e8 03          	shr    $0x3,%rax
* 2a:	80 3c 18 00          	cmpb   $0x0,(%rax,%rbx,1) <-- trapping instruction
  2e:	74 08                	je     0x38
  30:	4c 89 f7             	mov    %r14,%rdi
  33:	e8 2a b8 e6 fe       	call   0xfee6b862
  38:	49 8b 3e             	mov    (%r14),%rdi
  3b:	e8 02 fd bd fe       	call   0xfebdfd42