loop4: detected capacity change from 0 to 32768
general protection fault, probably for non-canonical address 0xdffffc0000000001: 0000 [#1] PREEMPT SMP KASAN
KASAN: null-ptr-deref in range [0x0000000000000008-0x000000000000000f]
CPU: 0 PID: 7856 Comm: syz.4.1166 Not tainted 6.1.96-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/07/2024
RIP: 0010:dtInsertEntry+0xd08/0x1770 fs/jfs/jfs_dtree.c:3713
Code: 83 e6 02 31 ff e8 98 a1 83 fe 83 e3 02 75 3a e8 2e 9f 83 fe 48 8b 9c 24 a8 00 00 00 48 83 c3 08 48 89 d8 48 c1 e8 03 4c 89 f2 <42> 0f b6 04 30 84 c0 74 3e 89 d9 80 e1 07 38 c1 7c 35 48 89 df e8
RSP: 0018:ffffc90004b67060 EFLAGS: 00010202
RAX: 0000000000000001 RBX: 0000000000000008 RCX: 0000000000040000
RDX: dffffc0000000000 RSI: 0000000000002c01 RDI: 0000000000002c02
RBP: ffffc90004b67210 R08: ffffffff8306f498 R09: ffffed100a9c55d4
R10: 0000000000000000 R11: dffffc0000000001 R12: ffff888054e2b130
R13: dffffc0000000000 R14: dffffc0000000000 R15: 0000000000000002
FS:  00007fa90e1ff6c0(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000020001000 CR3: 000000007ecd5000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 dtInsert+0xbed/0x6b00 fs/jfs/jfs_dtree.c:891
 jfs_create+0x7b2/0xbb0 fs/jfs/namei.c:137
 lookup_open fs/namei.c:3484 [inline]
 open_last_lookups fs/namei.c:3552 [inline]
 path_openat+0x12f1/0x2e60 fs/namei.c:3782
 do_filp_open+0x230/0x480 fs/namei.c:3812
 do_sys_openat2+0x13b/0x500 fs/open.c:1318
 do_sys_open fs/open.c:1334 [inline]
 __do_sys_openat fs/open.c:1350 [inline]
 __se_sys_openat fs/open.c:1345 [inline]
 __x64_sys_openat+0x243/0x290 fs/open.c:1345
 do_syscall_x64 arch/x86/entry/common.c:51 [inline]
 do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:81
 entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7fa90e375b99
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:00007fa90e1ff048 EFLAGS: 00000246 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 00007fa90e503fa0 RCX: 00007fa90e375b99
RDX: 000000000000275a RSI: 0000000020000140 RDI: ffffffffffffff9c
RBP: 00007fa90e3f677e R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000000b R14: 00007fa90e503fa0 R15: 00007ffda749a6f8
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:dtInsertEntry+0xd08/0x1770 fs/jfs/jfs_dtree.c:3713
Code: 83 e6 02 31 ff e8 98 a1 83 fe 83 e3 02 75 3a e8 2e 9f 83 fe 48 8b 9c 24 a8 00 00 00 48 83 c3 08 48 89 d8 48 c1 e8 03 4c 89 f2 <42> 0f b6 04 30 84 c0 74 3e 89 d9 80 e1 07 38 c1 7c 35 48 89 df e8
RSP: 0018:ffffc90004b67060 EFLAGS: 00010202
RAX: 0000000000000001 RBX: 0000000000000008 RCX: 0000000000040000
RDX: dffffc0000000000 RSI: 0000000000002c01 RDI: 0000000000002c02
RBP: ffffc90004b67210 R08: ffffffff8306f498 R09: ffffed100a9c55d4
R10: 0000000000000000 R11: dffffc0000000001 R12: ffff888054e2b130
R13: dffffc0000000000 R14: dffffc0000000000 R15: 0000000000000002
FS:  00007fa90e1ff6c0(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f76e9cd1ef8 CR3: 000000007ecd5000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess):
   0:	83 e6 02             	and    $0x2,%esi
   3:	31 ff                	xor    %edi,%edi
   5:	e8 98 a1 83 fe       	call   0xfe83a1a2
   a:	83 e3 02             	and    $0x2,%ebx
   d:	75 3a                	jne    0x49
   f:	e8 2e 9f 83 fe       	call   0xfe839f42
  14:	48 8b 9c 24 a8 00 00 	mov    0xa8(%rsp),%rbx
  1b:	00
  1c:	48 83 c3 08          	add    $0x8,%rbx
  20:	48 89 d8             	mov    %rbx,%rax
  23:	48 c1 e8 03          	shr    $0x3,%rax
  27:	4c 89 f2             	mov    %r14,%rdx
* 2a:	42 0f b6 04 30       	movzbl (%rax,%r14,1),%eax <-- trapping instruction
  2f:	84 c0                	test   %al,%al
  31:	74 3e                	je     0x71
  33:	89 d9                	mov    %ebx,%ecx
  35:	80 e1 07             	and    $0x7,%cl
  38:	38 c1                	cmp    %al,%cl
  3a:	7c 35                	jl     0x71
  3c:	48 89 df             	mov    %rbx,%rdi
  3f:	e8                   	.byte 0xe8