------------[ cut here ]------------
kernel BUG at fs/buffer.c:2714!
invalid opcode: 0000 [#1] PREEMPT SMP KASAN
CPU: 1 PID: 15283 Comm: syz.0.14398 Not tainted 6.1.128-syzkaller-00012-g4da91a8e563c #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
RIP: 0010:submit_bh_wbc+0x4cd/0x4f0 fs/buffer.c:2714
Code: c3 89 d9 80 e1 07 80 c1 03 38 c1 0f 8c bd fe ff ff 48 89 df e8 14 bc e6 ff e9 b0 fe ff ff e8 8a 1d 9f ff 0f 0b e8 83 1d 9f ff <0f> 0b e8 7c 1d 9f ff 0f 0b e8 75 1d 9f ff 0f 0b e8 6e 1d 9f ff 0f
RSP: 0018:ffffc90000b676b8 EFLAGS: 00010283
RAX: ffffffff81d6775d RBX: 0000000000000000 RCX: 0000000000080000
RDX: ffffc9000b12a000 RSI: 00000000000015ca RDI: 00000000000015cb
RBP: ffffc90000b67708 R08: ffffffff81d67330 R09: ffffed10265b5fba
R10: 0000000000000000 R11: dffffc0000000001 R12: 0000000000000000
R13: 1ffff110265b5fb9 R14: ffff888132dafdc8 R15: 0000000000003000
FS:  00007fe7b88b86c0(0000) GS:ffff8881f6f00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b2fc1eff8 CR3: 0000000144d04000 CR4: 00000000003506a0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 submit_bh+0x1d/0x30 fs/buffer.c:2755
 __ext4_read_bh fs/ext4/super.c:175 [inline]
 ext4_read_bh+0x1b2/0x250 fs/ext4/super.c:199
 read_mmp_block+0x155/0x7d0 fs/ext4/mmp.c:97
 ext4_multi_mount_protect+0x600/0x9c0 fs/ext4/mmp.c:378
 __ext4_fill_super fs/ext4/super.c:5270 [inline]
 ext4_fill_super+0x5a19/0x8450 fs/ext4/super.c:5641
 get_tree_bdev+0x440/0x680 fs/super.c:1368
 ext4_get_tree+0x1c/0x20 fs/ext4/super.c:5671
 vfs_get_tree+0x88/0x290 fs/super.c:1575
 do_new_mount+0x2ba/0xb30 fs/namespace.c:3056
 path_mount+0x671/0x1070 fs/namespace.c:3386
 do_mount fs/namespace.c:3399 [inline]
 __do_sys_mount fs/namespace.c:3607 [inline]
 __se_sys_mount+0x2c4/0x3b0 fs/namespace.c:3584
 __x64_sys_mount+0xbf/0xd0 fs/namespace.c:3584
 x64_sys_call+0x49d/0x9a0 arch/x86/include/generated/asm/syscalls_64.h:166
 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: 0033:0x7fe7b798e90a
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:00007fe7b88b7e68 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007fe7b88b7ef0 RCX: 00007fe7b798e90a
RDX: 0000400000001140 RSI: 00004000000007c0 RDI: 00007fe7b88b7eb0
RBP: 0000400000001140 R08: 00007fe7b88b7ef0 R09: 0000000000410c84
R10: 0000000000410c84 R11: 0000000000000246 R12: 00004000000007c0
R13: 00007fe7b88b7eb0 R14: 0000000000000775 R15: 0000400000000340
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:submit_bh_wbc+0x4cd/0x4f0 fs/buffer.c:2714
Code: c3 89 d9 80 e1 07 80 c1 03 38 c1 0f 8c bd fe ff ff 48 89 df e8 14 bc e6 ff e9 b0 fe ff ff e8 8a 1d 9f ff 0f 0b e8 83 1d 9f ff <0f> 0b e8 7c 1d 9f ff 0f 0b e8 75 1d 9f ff 0f 0b e8 6e 1d 9f ff 0f
RSP: 0018:ffffc90000b676b8 EFLAGS: 00010283
RAX: ffffffff81d6775d RBX: 0000000000000000 RCX: 0000000000080000
RDX: ffffc9000b12a000 RSI: 00000000000015ca RDI: 00000000000015cb
RBP: ffffc90000b67708 R08: ffffffff81d67330 R09: ffffed10265b5fba
R10: 0000000000000000 R11: dffffc0000000001 R12: 0000000000000000
R13: 1ffff110265b5fb9 R14: ffff888132dafdc8 R15: 0000000000003000
FS:  00007fe7b88b86c0(0000) GS:ffff8881f6e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fb0274d35a0 CR3: 0000000144d04000 CR4: 00000000003506b0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400