EXT4-fs error (device loop3): ext4_validate_block_bitmap:429: comm syz.3.715: bg 0: block 3: invalid block bitmap
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: 2933 Comm: syz.3.715 Not tainted 6.1.90-syzkaller-00004-g79436849ef1d #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/27/2024
RIP: 0010:__ext4_journal_get_write_access+0xb0/0x690 fs/ext4/ext4_jbd2.c:231
Code: 88 ff 49 8d 5e 30 48 89 d8 48 c1 e8 03 42 80 3c 28 00 74 08 48 89 df e8 fe 16 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 e1 16 d0 ff 4c 8b 23 4d 85 e4 4c
RSP: 0018:ffffc90000b8f5e0 EFLAGS: 00010202
RAX: 0000000000000007 RBX: 0000000000000038 RCX: 0000000000040000
RDX: ffffc900012ea000 RSI: 000000000003ffff RDI: 0000000000040000
RBP: ffffc90000b8f6b0 R08: ffff88810bf5fa80 R09: 0000000000000001
R10: 0000000000000000 R11: dffffc0000000001 R12: ffff8881346f9e70
R13: dffffc0000000000 R14: ffff88810bf5fa80 R15: 0000000000000001
FS:  00007f5b1bb576c0(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ffc77596708 CR3: 0000000124f85000 CR4: 00000000003506a0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 ext4_free_inode+0x568/0xdc0 fs/ext4/ialloc.c:312
 ext4_evict_inode+0xfc8/0x1550 fs/ext4/inode.c:331
 evict+0x2a3/0x630 fs/inode.c:666
 iput_final fs/inode.c:1791 [inline]
 iput+0x642/0x870 fs/inode.c:1817
 __ext4_new_inode+0x836/0x40a0 fs/ext4/ialloc.c:1365
 ext4_symlink+0x396/0xc10 fs/ext4/namei.c:3398
 vfs_symlink+0x24e/0x3e0 fs/namei.c:4472
 do_symlinkat+0x1ea/0x5a0 fs/namei.c:4501
 __do_sys_symlinkat fs/namei.c:4518 [inline]
 __se_sys_symlinkat fs/namei.c:4515 [inline]
 __x64_sys_symlinkat+0x99/0xb0 fs/namei.c:4515
 x64_sys_call+0x6fe/0x9a0 arch/x86/include/generated/asm/syscalls_64.h:267
 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: 0033:0x7f5b1ad799f9
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:00007f5b1bb57038 EFLAGS: 00000246 ORIG_RAX: 000000000000010a
RAX: ffffffffffffffda RBX: 00007f5b1af15f80 RCX: 00007f5b1ad799f9
RDX: 00000000200003c0 RSI: 0000000000000008 RDI: 0000000020000240
RBP: 00007f5b1ade78ee R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f5b1af15f80 R15: 00007ffcb8ee74c8
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:__ext4_journal_get_write_access+0xb0/0x690 fs/ext4/ext4_jbd2.c:231
Code: 88 ff 49 8d 5e 30 48 89 d8 48 c1 e8 03 42 80 3c 28 00 74 08 48 89 df e8 fe 16 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 e1 16 d0 ff 4c 8b 23 4d 85 e4 4c
RSP: 0018:ffffc90000b8f5e0 EFLAGS: 00010202

RAX: 0000000000000007 RBX: 0000000000000038 RCX: 0000000000040000
RDX: ffffc900012ea000 RSI: 000000000003ffff RDI: 0000000000040000
RBP: ffffc90000b8f6b0 R08: ffff88810bf5fa80 R09: 0000000000000001
R10: 0000000000000000 R11: dffffc0000000001 R12: ffff8881346f9e70
R13: dffffc0000000000 R14: ffff88810bf5fa80 R15: 0000000000000001
FS:  00007f5b1bb576c0(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ffc77596708 CR3: 0000000124f85000 CR4: 00000000003506a0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess):
   0:	88 ff                	mov    %bh,%bh
   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 fe 16 d0 ff       	call   0xffd0171a
  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 e1 16 d0 ff       	call   0xffd0171a
  39:	4c 8b 23             	mov    (%rbx),%r12
  3c:	4d 85 e4             	test   %r12,%r12
  3f:	4c                   	rex.WR