Oops: general protection fault, probably for non-canonical address 0xdffffc0000000006: 0000 [#1] SMP KASAN NOPTI
KASAN: null-ptr-deref in range [0x0000000000000030-0x0000000000000037]
CPU: 1 UID: 0 PID: 19579 Comm: syz.7.3052 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/18/2025
RIP: 0010:diRead+0x513/0xc30 fs/jfs/jfs_imap.c:342
Code: 48 c1 ea 03 80 3c 02 00 0f 85 9b 06 00 00 48 8b ad a0 00 00 00 48 b8 00 00 00 00 00 fc ff df 48 8d 7d 34 48 89 fa 48 c1 ea 03 <0f> b6 14 02 48 89 f8 83 e0 07 83 c0 03 38 d0 7c 08 84 d2 0f 85 e1
RSP: 0018:ffffc90003baf7a8 EFLAGS: 00010217
RAX: dffffc0000000000 RBX: ffff88807ee71fd8 RCX: 0000000000000000
RDX: 0000000000000006 RSI: 0000000000000000 RDI: 0000000000000034
RBP: 0000000000000000 R08: 0000000000000005 R09: 000000000000001f
R10: 0000000000000000 R11: 0000000000000000 R12: ffff88803adca400
R13: 0000000000000024 R14: ffff8880570c9008 R15: ffff8880570c9c0c
FS:  00007fb93afee6c0(0000) GS:ffff8881247b4000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fb93afedf98 CR3: 0000000081f34000 CR4: 0000000000350ef0
Call Trace:
 <TASK>
 jfs_iget+0x8b/0x4c0 fs/jfs/inode.c:35
 jfs_lookup+0x2b2/0x380 fs/jfs/namei.c:1469
 __lookup_slow+0x251/0x460 fs/namei.c:1808
 lookup_slow fs/namei.c:1825 [inline]
 walk_component+0x353/0x5b0 fs/namei.c:2129
 lookup_last fs/namei.c:2630 [inline]
 path_lookupat+0x142/0x6d0 fs/namei.c:2654
 filename_lookup+0x224/0x5f0 fs/namei.c:2683
 user_path_at+0x3a/0x60 fs/namei.c:3127
 do_mount fs/namespace.c:4133 [inline]
 __do_sys_mount fs/namespace.c:4347 [inline]
 __se_sys_mount fs/namespace.c:4324 [inline]
 __x64_sys_mount+0x1fc/0x310 fs/namespace.c:4324
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xcd/0x4e0 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fb93a18eba9
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 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 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fb93afee038 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007fb93a3d6090 RCX: 00007fb93a18eba9
RDX: 0000000000000000 RSI: 0000200000000000 RDI: 0000000000000000
RBP: 00007fb93a211e19 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fb93a3d6128 R14: 00007fb93a3d6090 R15: 00007ffdd0b9e3f8
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:diRead+0x513/0xc30 fs/jfs/jfs_imap.c:342
Code: 48 c1 ea 03 80 3c 02 00 0f 85 9b 06 00 00 48 8b ad a0 00 00 00 48 b8 00 00 00 00 00 fc ff df 48 8d 7d 34 48 89 fa 48 c1 ea 03 <0f> b6 14 02 48 89 f8 83 e0 07 83 c0 03 38 d0 7c 08 84 d2 0f 85 e1
RSP: 0018:ffffc90003baf7a8 EFLAGS: 00010217
RAX: dffffc0000000000 RBX: ffff88807ee71fd8 RCX: 0000000000000000
RDX: 0000000000000006 RSI: 0000000000000000 RDI: 0000000000000034
RBP: 0000000000000000 R08: 0000000000000005 R09: 000000000000001f
R10: 0000000000000000 R11: 0000000000000000 R12: ffff88803adca400
R13: 0000000000000024 R14: ffff8880570c9008 R15: ffff8880570c9c0c
FS:  00007fb93afee6c0(0000) GS:ffff8881247b4000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000200000025000 CR3: 0000000081f34000 CR4: 0000000000350ef0
----------------
Code disassembly (best guess):
   0:	48 c1 ea 03          	shr    $0x3,%rdx
   4:	80 3c 02 00          	cmpb   $0x0,(%rdx,%rax,1)
   8:	0f 85 9b 06 00 00    	jne    0x6a9
   e:	48 8b ad a0 00 00 00 	mov    0xa0(%rbp),%rbp
  15:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  1c:	fc ff df
  1f:	48 8d 7d 34          	lea    0x34(%rbp),%rdi
  23:	48 89 fa             	mov    %rdi,%rdx
  26:	48 c1 ea 03          	shr    $0x3,%rdx
* 2a:	0f b6 14 02          	movzbl (%rdx,%rax,1),%edx <-- trapping instruction
  2e:	48 89 f8             	mov    %rdi,%rax
  31:	83 e0 07             	and    $0x7,%eax
  34:	83 c0 03             	add    $0x3,%eax
  37:	38 d0                	cmp    %dl,%al
  39:	7c 08                	jl     0x43
  3b:	84 d2                	test   %dl,%dl
  3d:	0f                   	.byte 0xf
  3e:	85 e1                	test   %esp,%ecx