------------[ cut here ]------------
WARNING: CPU: 1 PID: 5073 at fs/buffer.c:1125 __getblk_slow fs/buffer.c:1125 [inline]
WARNING: CPU: 1 PID: 5073 at fs/buffer.c:1125 bdev_getblk+0x218/0x270 fs/buffer.c:1461
Modules linked in:
CPU: 1 UID: 0 PID: 5073 Comm: syz.0.74 Not tainted 6.16.0-rc1-syzkaller #0 PREEMPT(undef) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025
RIP: 0010:__getblk_slow fs/buffer.c:1125 [inline]
RIP: 0010:bdev_getblk+0x218/0x270 fs/buffer.c:1461
Code: 11 72 3e 83 48 89 ea 4c 89 f9 e8 73 5b bf ff 45 31 e4 4c 89 e0 48 83 c4 18 5b 41 5c 41 5d 41 5e 41 5f 5d e9 5a 2b 42 01 cc 90 <0f> 0b 90 49 8b 47 18 8b 90 a0 01 00 00 48 c7 c7 20 9e 36 83 44 89
RSP: 0018:ffffc90002527ba8 EFLAGS: 00010206
RAX: 0000000000007fff RBX: 0000000000002800 RCX: ffe582981efb3600
RDX: 0000000000000000 RSI: ffffffff8353dd60 RDI: 0000000000000000
RBP: 0000000000000008 R08: 0000000000000402 R09: 0000000000000002
R10: 0000000000000001 R11: ffffffff814801d0 R12: 0000000000000000
R13: 0000000000000009 R14: 0000000000000400 R15: ffff8881104c0b00
FS:  00007ff1533676c0(0000) GS:ffff8882b3546000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055558d8c64a8 CR3: 0000000178856000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 ext4_sb_breadahead_unmovable+0x1c/0x90 fs/ext4/super.c:270
 __ext4_get_inode_loc+0x386/0x470 fs/ext4/inode.c:4879
 __ext4_get_inode_loc_noinmem fs/ext4/inode.c:4909 [inline]
 __ext4_iget+0x1cd/0xe40 fs/ext4/inode.c:5168
 __ext4_fill_super fs/ext4/super.c:5500 [inline]
 ext4_fill_super+0x14a7/0x1990 fs/ext4/super.c:5724
 get_tree_bdev_flags+0x13c/0x1c0 fs/super.c:1679
 vfs_get_tree+0x26/0xf0 fs/super.c:1802
 do_new_mount+0x13f/0x390 fs/namespace.c:3885
 do_mount fs/namespace.c:4222 [inline]
 __do_sys_mount fs/namespace.c:4433 [inline]
 __se_sys_mount+0x147/0x1b0 fs/namespace.c:4410
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xe2/0x2f0 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7ff1525900ca
Code: d8 64 89 02 48 c7 c0 ff ff ff ff eb a6 e8 de 1a 00 00 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 49 89 ca b8 a5 00 00 00 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:00007ff153366e68 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007ff153366ef0 RCX: 00007ff1525900ca
RDX: 0000200000000040 RSI: 0000200000000000 RDI: 00007ff153366eb0
RBP: 0000200000000040 R08: 00007ff153366ef0 R09: 000000000000088e
R10: 000000000000088e R11: 0000000000000246 R12: 0000200000000000
R13: 00007ff153366eb0 R14: 0000000000000445 R15: 000000000000002c
 </TASK>