RSP: 002b:00007fa5c1f8de58 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007fa5c1f8dee0 RCX: 00007fa5c3d3e0ca
RDX: 0000200000008b00 RSI: 0000200000000f00 RDI: 0000000000000000
RBP: 0000200000008b00 R08: 00007fa5c1f8dee0 R09: 0000000003b4a468
R10: 0000000003b4a468 R11: 0000000000000246 R12: 0000200000000f00
R13: 00007fa5c1f8dea0 R14: 0000000000000000 R15: 0000200000007840
 </TASK>
jfs_mount_rw: diMount failed!
Oops: general protection fault, probably for non-canonical address 0xdffffc0000000104: 0000 [#1] SMP KASAN PTI
KASAN: null-ptr-deref in range [0x0000000000000820-0x0000000000000827]
CPU: 1 UID: 0 PID: 6285 Comm: syz.4.104 Not tainted syzkaller #0 PREEMPT_{RT,(full)} 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026
RIP: 0010:diIAGRead fs/jfs/jfs_imap.c:2665 [inline]
RIP: 0010:diRead+0x151/0xbc0 fs/jfs/jfs_imap.c:316
Code: 8d 5d 80 48 89 d8 48 c1 e8 03 42 80 3c 20 00 74 08 48 89 df e8 00 67 d5 fe 4c 8b 3b 49 8d 9f 20 08 00 00 48 89 d8 48 c1 e8 03 <42> 80 3c 20 00 74 08 48 89 df e8 e0 66 d5 fe 4c 8b 2b 49 8d 5d 28
RSP: 0018:ffffc90006b676d8 EFLAGS: 00010202
RAX: 0000000000000104 RBX: 0000000000000820 RCX: ffffffff81a070aa
RDX: 0000000000000001 RSI: 0000000000000004 RDI: ffffc90006b67660
RBP: ffff8880638247d8 R08: 0000000000000003 R09: 0000000000000004
R10: dffffc0000000000 R11: fffff52000d6cecc R12: dffffc0000000000
R13: ffff88803433b200 R14: 0000000000000020 R15: 0000000000000000
FS:  00007fa5c1f8e6c0(0000) GS:ffff888126218000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f5a39204ff8 CR3: 0000000038f82000 CR4: 00000000003526f0
Call Trace:
 <TASK>
 jfs_iget+0x89/0x470 fs/jfs/inode.c:35
 jfs_lookup+0x220/0x420 fs/jfs/namei.c:1472
 __lookup_slow+0x1fb/0x2f0 fs/namei.c:1919
 lookup_slow+0x53/0x70 fs/namei.c:1936
 walk_component fs/namei.c:2282 [inline]
 link_path_walk+0xd2a/0x1910 fs/namei.c:2656
 path_parentat fs/namei.c:2860 [inline]
 __filename_parentat+0x287/0x6f0 fs/namei.c:2884
 filename_parentat fs/namei.c:2902 [inline]
 filename_create+0xd9/0x370 fs/namei.c:4932
 filename_mkdirat+0xd2/0x520 fs/namei.c:5298
 __do_sys_mkdirat fs/namei.c:5326 [inline]
 __se_sys_mkdirat+0x35/0x150 fs/namei.c:5323
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0x174/0x580 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fa5c3d3ce59
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fa5c1f8e028 EFLAGS: 00000246 ORIG_RAX: 0000000000000102
RAX: ffffffffffffffda RBX: 00007fa5c3fb5fa0 RCX: 00007fa5c3d3ce59
RDX: 0000000000000000 RSI: 0000200000004380 RDI: ffffffffffffff9c
RBP: 00007fa5c3dd2e6f R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fa5c3fb6038 R14: 00007fa5c3fb5fa0 R15: 00007fff564012a8
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:diIAGRead fs/jfs/jfs_imap.c:2665 [inline]
RIP: 0010:diRead+0x151/0xbc0 fs/jfs/jfs_imap.c:316
Code: 8d 5d 80 48 89 d8 48 c1 e8 03 42 80 3c 20 00 74 08 48 89 df e8 00 67 d5 fe 4c 8b 3b 49 8d 9f 20 08 00 00 48 89 d8 48 c1 e8 03 <42> 80 3c 20 00 74 08 48 89 df e8 e0 66 d5 fe 4c 8b 2b 49 8d 5d 28
RSP: 0018:ffffc90006b676d8 EFLAGS: 00010202
RAX: 0000000000000104 RBX: 0000000000000820 RCX: ffffffff81a070aa
RDX: 0000000000000001 RSI: 0000000000000004 RDI: ffffc90006b67660
RBP: ffff8880638247d8 R08: 0000000000000003 R09: 0000000000000004
R10: dffffc0000000000 R11: fffff52000d6cecc R12: dffffc0000000000
R13: ffff88803433b200 R14: 0000000000000020 R15: 0000000000000000
FS:  00007fa5c1f8e6c0(0000) GS:ffff888126218000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000000 CR3: 0000000038f82000 CR4: 00000000003526f0
----------------
Code disassembly (best guess):
   0:	8d 5d 80             	lea    -0x80(%rbp),%ebx
   3:	48 89 d8             	mov    %rbx,%rax
   6:	48 c1 e8 03          	shr    $0x3,%rax
   a:	42 80 3c 20 00       	cmpb   $0x0,(%rax,%r12,1)
   f:	74 08                	je     0x19
  11:	48 89 df             	mov    %rbx,%rdi
  14:	e8 00 67 d5 fe       	call   0xfed56719
  19:	4c 8b 3b             	mov    (%rbx),%r15
  1c:	49 8d 9f 20 08 00 00 	lea    0x820(%r15),%rbx
  23:	48 89 d8             	mov    %rbx,%rax
  26:	48 c1 e8 03          	shr    $0x3,%rax
* 2a:	42 80 3c 20 00       	cmpb   $0x0,(%rax,%r12,1) <-- trapping instruction
  2f:	74 08                	je     0x39
  31:	48 89 df             	mov    %rbx,%rdi
  34:	e8 e0 66 d5 fe       	call   0xfed56719
  39:	4c 8b 2b             	mov    (%rbx),%r13
  3c:	49 8d 5d 28          	lea    0x28(%r13),%rbx