Oops: general protection fault, probably for non-canonical address 0xdffffc0000000006: 0000 [#1] PREEMPT SMP KASAN NOPTI
KASAN: null-ptr-deref in range [0x0000000000000030-0x0000000000000037]
CPU: 1 UID: 0 PID: 5856 Comm: syz-executor Not tainted 6.12.0-rc6-syzkaller-00169-g906bd684e4b1 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/30/2024
RIP: 0010:write_special_inodes+0xa9/0x170 fs/jfs/jfs_logmgr.c:208
Code: 2e e8 ab ac 12 08 48 8d 7b 28 48 89 f8 48 c1 e8 03 80 3c 28 00 0f 85 b1 00 00 00 4c 8b 6b 28 49 8d 7d 30 48 89 f8 48 c1 e8 03 <80> 3c 28 00 0f 85 8e 00 00 00 49 8b 7d 30 2e e8 73 ac 12 08 48 8d
RSP: 0018:ffffc90003b07be0 EFLAGS: 00010216
RAX: 0000000000000006 RBX: ffff8880283fb000 RCX: ffffffff81c1138e
RDX: 0000000000000000 RSI: ffffffff81c11341 RDI: 0000000000000030
RBP: dffffc0000000000 R08: 0000000000000005 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: ffffffff81c1da30
R13: 0000000000000000 R14: ffff88807f0d9000 R15: 1ffff1100fe1b245
FS:  00005555803aa500(0000) GS:ffff8880b8700000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f3c40b062d8 CR3: 0000000064c22000 CR4: 0000000000350ef0
Call Trace:
 <TASK>
 jfs_flush_journal+0x445/0x940 fs/jfs/jfs_logmgr.c:1582
 jfs_umount+0x17a/0x440 fs/jfs/jfs_umount.c:58
 jfs_put_super+0x88/0x1d0 fs/jfs/super.c:194
 generic_shutdown_super+0x15f/0x3d0 fs/super.c:642
 kill_block_super+0x3b/0x90 fs/super.c:1710
 deactivate_locked_super+0xc1/0x1a0 fs/super.c:473
 deactivate_super+0xde/0x100 fs/super.c:506
 cleanup_mnt+0x222/0x450 fs/namespace.c:1373
 task_work_run+0x151/0x250 kernel/task_work.c:239
 resume_user_mode_work include/linux/resume_user_mode.h:50 [inline]
 exit_to_user_mode_loop kernel/entry/common.c:114 [inline]
 exit_to_user_mode_prepare include/linux/entry-common.h:328 [inline]
 __syscall_exit_to_user_mode_work kernel/entry/common.c:207 [inline]
 syscall_exit_to_user_mode+0x27b/0x2a0 kernel/entry/common.c:218
 do_syscall_64+0xda/0x250 arch/x86/entry/common.c:89
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fd207b7fa47
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:00007fffec05b178 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007fd207b7fa47
RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007fffec05b230
RBP: 00007fffec05b230 R08: 0000000000000000 R09: 0000000000000000
R10: 00000000ffffffff R11: 0000000000000246 R12: 00007fffec05c2b0
R13: 00007fd207bf123c R14: 0000000000027ddd R15: 00007fffec05c2f0
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:write_special_inodes+0xa9/0x170 fs/jfs/jfs_logmgr.c:208
----------------
Code disassembly (best guess):
   0:	2e e8 ab ac 12 08    	cs call 0x812acb1
   6:	48 8d 7b 28          	lea    0x28(%rbx),%rdi
   a:	48 89 f8             	mov    %rdi,%rax
   d:	48 c1 e8 03          	shr    $0x3,%rax
  11:	80 3c 28 00          	cmpb   $0x0,(%rax,%rbp,1)
  15:	0f 85 b1 00 00 00    	jne    0xcc
  1b:	4c 8b 6b 28          	mov    0x28(%rbx),%r13
  1f:	49 8d 7d 30          	lea    0x30(%r13),%rdi
  23:	48 89 f8             	mov    %rdi,%rax
  26:	48 c1 e8 03          	shr    $0x3,%rax
* 2a:	80 3c 28 00          	cmpb   $0x0,(%rax,%rbp,1) <-- trapping instruction
  2e:	0f 85 8e 00 00 00    	jne    0xc2
  34:	49 8b 7d 30          	mov    0x30(%r13),%rdi
  38:	2e e8 73 ac 12 08    	cs call 0x812acb1
  3e:	48                   	rex.W
  3f:	8d                   	.byte 0x8d