loop0: detected capacity change from 0 to 2048
EXT4-fs (loop0): mounted filesystem without journal. Quota mode: none.
general protection fault, probably for non-canonical address 0xdffffc0000000007: 0000 [#1] PREEMPT SMP KASAN
KASAN: null-ptr-deref in range [0x0000000000000038-0x000000000000003f]
CPU: 1 PID: 853 Comm: syz-executor.0 Not tainted 6.1.78-syzkaller-00009-g25216be1ac5e #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/02/2024
RIP: 0010:__ext4_journal_get_write_access+0xb0/0x690 fs/ext4/ext4_jbd2.c:231
Code: 89 ff 49 8d 5e 30 48 89 d8 48 c1 e8 03 42 80 3c 28 00 74 08 48 89 df e8 6e 17 d0 ff 48 8b 1b 48 83 c3 38 48 89 d8 48 c1 e8 03 <42> 80 3c 28 00 74 08 48 89 df e8 51 17 d0 ff 4c 8b 23 4d 85 e4 4c
RSP: 0018:ffffc90000cf7540 EFLAGS: 00010202
RAX: 0000000000000007 RBX: 0000000000000038 RCX: 0000000000040000
RDX: ffffc90009751000 RSI: 000000000000082d RDI: 000000000000082e
RBP: ffffc90000cf7610 R08: ffff88811fc6b690 R09: 0000000000000001
R10: 0000000000000000 R11: dffffc0000000001 R12: ffff88813446dce8
R13: dffffc0000000000 R14: ffff88811fc6b690 R15: 0000000000000001
FS:  00007eff885fa6c0(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00000000ffffffff CR3: 000000011a8c9000 CR4: 00000000003506a0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 __ext4_new_inode+0x13a2/0x40a0 fs/ext4/ialloc.c:1089
 ext4_create+0x275/0x550 fs/ext4/namei.c:2834
 lookup_open fs/namei.c:3483 [inline]
 open_last_lookups fs/namei.c:3551 [inline]
 path_openat+0x12ee/0x2d60 fs/namei.c:3781
 do_filp_open+0x230/0x480 fs/namei.c:3811
 do_sys_openat2+0x13f/0x850 fs/open.c:1341
 do_sys_open fs/open.c:1357 [inline]
 __do_sys_openat fs/open.c:1373 [inline]
 __se_sys_openat fs/open.c:1368 [inline]
 __x64_sys_openat+0x243/0x290 fs/open.c:1368
 do_syscall_x64 arch/x86/entry/common.c:51 [inline]
 do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:81
 entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7eff8787cea9
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 e1 20 00 00 90 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 b0 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007eff885fa0c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 00007eff879b3f80 RCX: 00007eff8787cea9
RDX: 000000000000275a RSI: 00000000200000c0 RDI: ffffffffffffff9c
RBP: 00007eff878ebff4 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000000b R14: 00007eff879b3f80 R15: 00007ffca9378a58
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:__ext4_journal_get_write_access+0xb0/0x690 fs/ext4/ext4_jbd2.c:231
Code: 89 ff 49 8d 5e 30 48 89 d8 48 c1 e8 03 42 80 3c 28 00 74 08 48 89 df e8 6e 17 d0 ff 48 8b 1b 48 83 c3 38 48 89 d8 48 c1 e8 03 <42> 80 3c 28 00 74 08 48 89 df e8 51 17 d0 ff 4c 8b 23 4d 85 e4 4c
RSP: 0018:ffffc90000cf7540 EFLAGS: 00010202
RAX: 0000000000000007 RBX: 0000000000000038 RCX: 0000000000040000
RDX: ffffc90009751000 RSI: 000000000000082d RDI: 000000000000082e
RBP: ffffc90000cf7610 R08: ffff88811fc6b690 R09: 0000000000000001
R10: 0000000000000000 R11: dffffc0000000001 R12: ffff88813446dce8
R13: dffffc0000000000 R14: ffff88811fc6b690 R15: 0000000000000001
FS:  00007eff885fa6c0(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00000000ffffffff CR3: 000000011a8c9000 CR4: 00000000003506b0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess):
   0:	89 ff                	mov    %edi,%edi
   2:	49 8d 5e 30          	lea    0x30(%r14),%rbx
   6:	48 89 d8             	mov    %rbx,%rax
   9:	48 c1 e8 03          	shr    $0x3,%rax
   d:	42 80 3c 28 00       	cmpb   $0x0,(%rax,%r13,1)
  12:	74 08                	je     0x1c
  14:	48 89 df             	mov    %rbx,%rdi
  17:	e8 6e 17 d0 ff       	call   0xffd0178a
  1c:	48 8b 1b             	mov    (%rbx),%rbx
  1f:	48 83 c3 38          	add    $0x38,%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 51 17 d0 ff       	call   0xffd0178a
  39:	4c 8b 23             	mov    (%rbx),%r12
  3c:	4d 85 e4             	test   %r12,%r12
  3f:	4c                   	rex.WR