Code: d8 64 89 02 48 c7 c0 ff ff ff ff eb a6 e8 de 1a 00 00 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 49 89 ca b8 a5 00 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:00007f14e0885e68 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007f14e0885ef0 RCX: 00007f14e2620eea
RDX: 0000200000000940 RSI: 0000200000001cc0 RDI: 0000000000000000
RBP: 0000200000000940 R08: 00007f14e0885ef0 R09: 0000000001a4a438
R10: 0000000001a4a438 R11: 0000000000000246 R12: 0000200000001cc0
R13: 00007f14e0885eb0 R14: 0000000000000000 R15: 0000200000000300
 </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: 0 UID: 0 PID: 18211 Comm: syz.6.1169 Not tainted syzkaller #0 PREEMPT_{RT,(full)} 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
RIP: 0010:diIAGRead fs/jfs/jfs_imap.c:2665 [inline]
RIP: 0010:diRead+0x151/0xb90 fs/jfs/jfs_imap.c:316
Code: 89 f0 48 c1 e8 03 80 3c 28 00 74 08 4c 89 f7 e8 35 23 e6 fe 4c 89 64 24 50 4d 8b 36 4d 8d be 20 08 00 00 4c 89 f8 48 c1 e8 03 <80> 3c 28 00 74 08 4c 89 ff e8 11 23 e6 fe 4d 8b 2f 4d 8d 7d 28 4c
RSP: 0018:ffffc9000d3d7658 EFLAGS: 00010202
RAX: 0000000000000104 RBX: 0000000000000004 RCX: ffffffff819c1fb5
RDX: 0000000000000001 RSI: 0000000000000004 RDI: ffffc9000d3d75e0
RBP: dffffc0000000000 R08: 0000000000000003 R09: 0000000000000004
R10: dffffc0000000000 R11: fffff52001a7aebc R12: ffff888064965c00
R13: ffff88803c2daa50 R14: 0000000000000000 R15: 0000000000000820
FS:  00007f14e08866c0(0000) GS:ffff888126cef000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fc85eb7b000 CR3: 000000005c442000 CR4: 00000000003526f0
Call Trace:
 <TASK>
 jfs_iget+0x89/0x470 fs/jfs/inode.c:35
 jfs_lookup+0x1c5/0x380 fs/jfs/namei.c:1469
 lookup_open fs/namei.c:4413 [inline]
 open_last_lookups fs/namei.c:4540 [inline]
 path_openat+0x13aa/0x3df0 fs/namei.c:4784
 do_filp_open+0x1fa/0x410 fs/namei.c:4814
 do_sys_openat2+0x121/0x200 fs/open.c:1430
 do_sys_open fs/open.c:1436 [inline]
 __do_sys_openat fs/open.c:1452 [inline]
 __se_sys_openat fs/open.c:1447 [inline]
 __x64_sys_openat+0x138/0x170 fs/open.c:1447
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xec/0xf80 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f14e261f749
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:00007f14e0886038 EFLAGS: 00000246 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 00007f14e2875fa0 RCX: 00007f14e261f749
RDX: 00000000000c4042 RSI: 0000200000000300 RDI: ffffffffffffff9c
RBP: 00007f14e26a3f91 R08: 0000000000000000 R09: 0000000000000000
R10: 000000000000001b R11: 0000000000000246 R12: 0000000000000000
R13: 00007f14e2876038 R14: 00007f14e2875fa0 R15: 00007fff34d87668
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:diIAGRead fs/jfs/jfs_imap.c:2665 [inline]
RIP: 0010:diRead+0x151/0xb90 fs/jfs/jfs_imap.c:316
Code: 89 f0 48 c1 e8 03 80 3c 28 00 74 08 4c 89 f7 e8 35 23 e6 fe 4c 89 64 24 50 4d 8b 36 4d 8d be 20 08 00 00 4c 89 f8 48 c1 e8 03 <80> 3c 28 00 74 08 4c 89 ff e8 11 23 e6 fe 4d 8b 2f 4d 8d 7d 28 4c
RSP: 0018:ffffc9000d3d7658 EFLAGS: 00010202
RAX: 0000000000000104 RBX: 0000000000000004 RCX: ffffffff819c1fb5
RDX: 0000000000000001 RSI: 0000000000000004 RDI: ffffc9000d3d75e0
RBP: dffffc0000000000 R08: 0000000000000003 R09: 0000000000000004
R10: dffffc0000000000 R11: fffff52001a7aebc R12: ffff888064965c00
R13: ffff88803c2daa50 R14: 0000000000000000 R15: 0000000000000820
FS:  00007f14e08866c0(0000) GS:ffff888126cef000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fc85eb4a000 CR3: 000000005c442000 CR4: 00000000003526f0
----------------
Code disassembly (best guess):
   0:	d8 64 89 02          	fsubs  0x2(%rcx,%rcx,4)
   4:	48 c7 c0 ff ff ff ff 	mov    $0xffffffffffffffff,%rax
   b:	eb a6                	jmp    0xffffffb3
   d:	e8 de 1a 00 00       	call   0x1af0
  12:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  19:	00 00 00
  1c:	0f 1f 40 00          	nopl   0x0(%rax)
  20:	49 89 ca             	mov    %rcx,%r10
  23:	b8 a5 00 00 00       	mov    $0xa5,%eax
  28:	0f 05                	syscall
* 2a:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax <-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 c7 c1 a8 ff ff ff 	mov    $0xffffffffffffffa8,%rcx
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W