EXT4-fs (loop0): 1 truncate cleaned up
EXT4-fs (loop0): mounted filesystem without journal. Quota mode: none.
overlayfs: './file1' not a directory
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: 588 Comm: syz.0.60 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
RIP: 0010:__ext4_journal_get_write_access+0xad/0x6c0 fs/ext4/ext4_jbd2.c:231
Code: 8c ff 49 8d 5e 30 48 89 d8 48 c1 e8 03 42 80 3c 28 00 74 08 48 89 df e8 c1 f4 d1 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 a4 f4 d1 ff 4c 8b 23 4d 85 e4 4c
RSP: 0018:ffffc900116dfa40 EFLAGS: 00010202
RAX: 0000000000000007 RBX: 0000000000000038 RCX: 0000000000080000
RDX: ffffc9000163a000 RSI: 0000000000000abd RDI: 0000000000000abe
RBP: ffffc900116dfb10 R08: ffff888115cc6738 R09: 0000000000000001
R10: dffffc0000000000 R11: ffffed10266275c6 R12: 1ffff920022dbf80
R13: dffffc0000000000 R14: ffff888115cc6738 R15: 1ffff920022dbf50
FS:  00007fb7fcc066c0(0000) GS:ffff8881f6f00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b2e815ff8 CR3: 000000011dd0f000 CR4: 00000000003526a0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 __ext4_new_inode+0x17a9/0x36d0 fs/ext4/ialloc.c:1136
 ext4_mkdir+0x43f/0xce0 fs/ext4/namei.c:3066
 vfs_mkdir+0x39c/0x580 fs/namei.c:4113
 do_mkdirat+0x171/0x4c0 fs/namei.c:4138
 __do_sys_mkdir fs/namei.c:4158 [inline]
 __se_sys_mkdir fs/namei.c:4156 [inline]
 __x64_sys_mkdir+0x6e/0x80 fs/namei.c:4156
 x64_sys_call+0x966/0x9a0 arch/x86/include/generated/asm/syscalls_64.h:84
 do_syscall_x64 arch/x86/entry/common.c:46 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:76
 entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7fb7fbd9acb9
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 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 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fb7fcc06028 EFLAGS: 00000246 ORIG_RAX: 0000000000000053
RAX: ffffffffffffffda RBX: 00007fb7fc015fa0 RCX: 00007fb7fbd9acb9
RDX: 0000000000000000 RSI: 0000000000000092 RDI: 0000200000000580
RBP: 00007fb7fbe08bf7 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fb7fc016038 R14: 00007fb7fc015fa0 R15: 00007ffc47d60618
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:__ext4_journal_get_write_access+0xad/0x6c0 fs/ext4/ext4_jbd2.c:231
Code: 8c ff 49 8d 5e 30 48 89 d8 48 c1 e8 03 42 80 3c 28 00 74 08 48 89 df e8 c1 f4 d1 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 a4 f4 d1 ff 4c 8b 23 4d 85 e4 4c
RSP: 0018:ffffc900116dfa40 EFLAGS: 00010202
RAX: 0000000000000007 RBX: 0000000000000038 RCX: 0000000000080000
RDX: ffffc9000163a000 RSI: 0000000000000abd RDI: 0000000000000abe
RBP: ffffc900116dfb10 R08: ffff888115cc6738 R09: 0000000000000001
R10: dffffc0000000000 R11: ffffed10266275c6 R12: 1ffff920022dbf80
R13: dffffc0000000000 R14: ffff888115cc6738 R15: 1ffff920022dbf50
FS:  00007fb7fcc066c0(0000) GS:ffff8881f6e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000200000000040 CR3: 000000011dd0f000 CR4: 00000000003506b0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess):
   0:	8c ff                	mov    %?,%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 c1 f4 d1 ff       	call   0xffd1f4dd
  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 a4 f4 d1 ff       	call   0xffd1f4dd
  39:	4c 8b 23             	mov    (%rbx),%r12
  3c:	4d 85 e4             	test   %r12,%r12
  3f:	4c                   	rex.WR