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: 6429 Comm: syz.5.84 Not tainted 6.14.0-rc7-syzkaller-00050-gfc444ada1310 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
RIP: 0010:diRead+0x43c/0xbc0 fs/jfs/jfs_imap.c:342
Code: 08 00 4c 8b 64 24 18 74 08 48 89 ef e8 7d d4 d2 fe 48 8b 5d 00 48 83 c3 34 48 89 d8 48 c1 e8 03 48 b9 00 00 00 00 00 fc ff df <0f> b6 04 08 84 c0 0f 85 84 05 00 00 8b 1b bf 40 00 00 00 89 de e8
RSP: 0018:ffffc900030cf9f8 EFLAGS: 00010217
RAX: 0000000000000006 RBX: 0000000000000034 RCX: dffffc0000000000
RDX: ffffc9000e6da000 RSI: 0000000000000733 RDI: 0000000000000734
RBP: ffff888032c2aea0 R08: ffffffff835643b0 R09: 1ffff1100b0844b5
R10: dffffc0000000000 R11: ffffed100b0844b6 R12: 0000000000000000
R13: 0000000000000024 R14: 0000000000000000 R15: ffff888058422910
FS:  00007f52319886c0(0000) GS:ffff8880b8700000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f5354543c6c CR3: 0000000070602000 CR4: 0000000000350ef0
Call Trace:
 <TASK>
 jfs_iget+0x86/0x3e0 fs/jfs/inode.c:35
 jfs_lookup+0x226/0x410 fs/jfs/namei.c:1469
 lookup_one_qstr_excl+0x128/0x2b0 fs/namei.c:1693
 filename_create+0x297/0x540 fs/namei.c:4083
 do_mkdirat+0xbd/0x3a0 fs/namei.c:4328
 __do_sys_mkdirat fs/namei.c:4351 [inline]
 __se_sys_mkdirat fs/namei.c:4349 [inline]
 __x64_sys_mkdirat+0x87/0xa0 fs/namei.c:4349
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f5230b8b9d7
Code: 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 b8 02 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f5231987e68 EFLAGS: 00000246 ORIG_RAX: 0000000000000102
RAX: ffffffffffffffda RBX: 00007f5231987ef0 RCX: 00007f5230b8b9d7
RDX: 00000000000001ff RSI: 0000400000000000 RDI: 00000000ffffff9c
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000400000000000
R13: 00007f5231987eb0 R14: 0000000000000000 R15: 0000000000000000
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:diRead+0x43c/0xbc0 fs/jfs/jfs_imap.c:342
Code: 08 00 4c 8b 64 24 18 74 08 48 89 ef e8 7d d4 d2 fe 48 8b 5d 00 48 83 c3 34 48 89 d8 48 c1 e8 03 48 b9 00 00 00 00 00 fc ff df <0f> b6 04 08 84 c0 0f 85 84 05 00 00 8b 1b bf 40 00 00 00 89 de e8
RSP: 0018:ffffc900030cf9f8 EFLAGS: 00010217
RAX: 0000000000000006 RBX: 0000000000000034 RCX: dffffc0000000000
RDX: ffffc9000e6da000 RSI: 0000000000000733 RDI: 0000000000000734
RBP: ffff888032c2aea0 R08: ffffffff835643b0 R09: 1ffff1100b0844b5
R10: dffffc0000000000 R11: ffffed100b0844b6 R12: 0000000000000000
R13: 0000000000000024 R14: 0000000000000000 R15: ffff888058422910
FS:  00007f52319886c0(0000) GS:ffff8880b8700000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f6cf83e9440 CR3: 0000000070602000 CR4: 0000000000350ef0
----------------
Code disassembly (best guess):
   0:	08 00                	or     %al,(%rax)
   2:	4c 8b 64 24 18       	mov    0x18(%rsp),%r12
   7:	74 08                	je     0x11
   9:	48 89 ef             	mov    %rbp,%rdi
   c:	e8 7d d4 d2 fe       	call   0xfed2d48e
  11:	48 8b 5d 00          	mov    0x0(%rbp),%rbx
  15:	48 83 c3 34          	add    $0x34,%rbx
  19:	48 89 d8             	mov    %rbx,%rax
  1c:	48 c1 e8 03          	shr    $0x3,%rax
  20:	48 b9 00 00 00 00 00 	movabs $0xdffffc0000000000,%rcx
  27:	fc ff df
* 2a:	0f b6 04 08          	movzbl (%rax,%rcx,1),%eax <-- trapping instruction
  2e:	84 c0                	test   %al,%al
  30:	0f 85 84 05 00 00    	jne    0x5ba
  36:	8b 1b                	mov    (%rbx),%ebx
  38:	bf 40 00 00 00       	mov    $0x40,%edi
  3d:	89 de                	mov    %ebx,%esi
  3f:	e8                   	.byte 0xe8