Oops: general protection fault, probably for non-canonical address 0xdffffc0000000104: 0000 [#1] PREEMPT SMP KASAN PTI
KASAN: null-ptr-deref in range [0x0000000000000820-0x0000000000000827]
CPU: 1 UID: 0 PID: 5951 Comm: syz.2.97 Not tainted 6.11.0-syzkaller-11993-g3efc57369a0c #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
RIP: 0010:diIAGRead fs/jfs/jfs_imap.c:2665 [inline]
RIP: 0010:diRead+0x154/0xbc0 fs/jfs/jfs_imap.c:316
Code: 8d 5d 80 48 89 d8 48 c1 e8 03 42 80 3c 28 00 74 08 48 89 df e8 8d 1c d4 fe 4c 8b 33 49 8d 9e 20 08 00 00 48 89 d8 48 c1 e8 03 <42> 80 3c 28 00 74 08 48 89 df e8 6d 1c d4 fe 4c 8b 2b 49 8d 6d 28
RSP: 0018:ffffc9000323f9f8 EFLAGS: 00010202
RAX: 0000000000000104 RBX: 0000000000000820 RCX: 0000000000000001
RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000001
RBP: ffff888060bea910 R08: ffff888060bea5b7 R09: 1ffff1100c17d4b6
R10: dffffc0000000000 R11: ffffed100c17d4b7 R12: 0000000000000004
R13: dffffc0000000000 R14: 0000000000000000 R15: ffff888060bea5a8
FS:  00007fdd9e7106c0(0000) GS:ffff8880b8700000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fdd9303f000 CR3: 000000007d966000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
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+0x11f/0x260 fs/namei.c:1633
 filename_create+0x297/0x540 fs/namei.c:4027
 do_mkdirat+0xbd/0x3a0 fs/namei.c:4272
 __do_sys_mkdirat fs/namei.c:4295 [inline]
 __se_sys_mkdirat fs/namei.c:4293 [inline]
 __x64_sys_mkdirat+0x87/0xa0 fs/namei.c:4293
 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: 0033:0x7fdd9d97dff9
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:00007fdd9e710038 EFLAGS: 00000246 ORIG_RAX: 0000000000000102
RAX: ffffffffffffffda RBX: 00007fdd9db36058 RCX: 00007fdd9d97dff9
RDX: 0000000000000000 RSI: 0000000020000340 RDI: ffffffffffffff9c
RBP: 00007fdd9d9f0296 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007fdd9db36058 R15: 00007ffecef93928
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:diIAGRead fs/jfs/jfs_imap.c:2665 [inline]
RIP: 0010:diRead+0x154/0xbc0 fs/jfs/jfs_imap.c:316
Code: 8d 5d 80 48 89 d8 48 c1 e8 03 42 80 3c 28 00 74 08 48 89 df e8 8d 1c d4 fe 4c 8b 33 49 8d 9e 20 08 00 00 48 89 d8 48 c1 e8 03 <42> 80 3c 28 00 74 08 48 89 df e8 6d 1c d4 fe 4c 8b 2b 49 8d 6d 28
RSP: 0018:ffffc9000323f9f8 EFLAGS: 00010202
RAX: 0000000000000104 RBX: 0000000000000820 RCX: 0000000000000001
RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000001
RBP: ffff888060bea910 R08: ffff888060bea5b7 R09: 1ffff1100c17d4b6
R10: dffffc0000000000 R11: ffffed100c17d4b7 R12: 0000000000000004
R13: dffffc0000000000 R14: 0000000000000000 R15: ffff888060bea5a8
FS:  00007fdd9e7106c0(0000) GS:ffff8880b8700000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fdda0867d60 CR3: 000000007d966000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
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 28 00       	cmpb   $0x0,(%rax,%r13,1)
   f:	74 08                	je     0x19
  11:	48 89 df             	mov    %rbx,%rdi
  14:	e8 8d 1c d4 fe       	call   0xfed41ca6
  19:	4c 8b 33             	mov    (%rbx),%r14
  1c:	49 8d 9e 20 08 00 00 	lea    0x820(%r14),%rbx
  23:	48 89 d8             	mov    %rbx,%rax
  26:	48 c1 e8 03          	shr    $0x3,%rax
* 2a:	42 80 3c 28 00       	cmpb   $0x0,(%rax,%r13,1) <-- trapping instruction
  2f:	74 08                	je     0x39
  31:	48 89 df             	mov    %rbx,%rdi
  34:	e8 6d 1c d4 fe       	call   0xfed41ca6
  39:	4c 8b 2b             	mov    (%rbx),%r13
  3c:	49 8d 6d 28          	lea    0x28(%r13),%rbp