EXT4-fs (loop0): Unrecognized mount option "ÿÿÿÿ" or missing value
EXT4-fs (loop0): feature flags set on rev 0 fs, running e2fsck is recommended
EXT4-fs (loop0): warning: checktime reached, running e2fsck is recommended
EXT4-fs warning (device loop0): ext4_update_dynamic_rev:1047: updating to rev 1 because of new feature flag, running e2fsck is recommended
EXT4-fs error (device loop0): ext4_validate_block_bitmap:429: comm syz-executor.0: bg 0: block 46: invalid block bitmap
Kernel panic - not syncing: EXT4-fs (device loop0): panic forced after error
CPU: 1 PID: 328 Comm: syz-executor.0 Not tainted 5.10.238-syzkaller-1007487-g59e9a7228857 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025
Call Trace:
 __dump_stack+0x21/0x24 lib/dump_stack.c:77
 dump_stack_lvl+0x169/0x1d8 lib/dump_stack.c:118
 dump_stack+0x15/0x1c lib/dump_stack.c:135
 panic+0x2d8/0x800 kernel/panic.c:308
 ext4_handle_error+0x34e/0x350 fs/ext4/super.c:673
 __ext4_error+0x1fa/0x3e0 fs/ext4/super.c:703
 ext4_validate_block_bitmap+0xd47/0xf50 fs/ext4/balloc.c:-1
 ext4_wait_block_bitmap+0x1ae/0x1d0 fs/ext4/balloc.c:579
 ext4_read_block_bitmap+0x41/0x80 fs/ext4/balloc.c:591
 ext4_mb_clear_bb fs/ext4/mballoc.c:5503 [inline]
 ext4_free_blocks+0xccb/0x22a0 fs/ext4/mballoc.c:5748
 ext4_remove_blocks fs/ext4/extents.c:2518 [inline]
 ext4_ext_rm_leaf fs/ext4/extents.c:2684 [inline]
 ext4_ext_remove_space+0x22bb/0x4910 fs/ext4/extents.c:2932
 ext4_ext_truncate+0x169/0x1f0 fs/ext4/extents.c:4465
 ext4_truncate+0xaa1/0x11e0 fs/ext4/inode.c:4367
 ext4_orphan_cleanup+0x8a6/0xd30 fs/ext4/super.c:3100
 ext4_fill_super+0x845b/0x8b60 fs/ext4/super.c:5075
 mount_bdev+0x28b/0x3a0 fs/super.c:1442
 ext4_mount+0x34/0x40 fs/ext4/super.c:6662
 legacy_get_tree+0xed/0x190 fs/fs_context.c:593
 vfs_get_tree+0x89/0x260 fs/super.c:1572
 do_new_mount+0x25a/0xa20 fs/namespace.c:2915
 path_mount+0x572/0xc80 fs/namespace.c:3245
 do_mount fs/namespace.c:3258 [inline]
 __do_sys_mount fs/namespace.c:3466 [inline]
 __se_sys_mount+0x318/0x380 fs/namespace.c:3443
 __x64_sys_mount+0xbf/0xd0 fs/namespace.c:3443
 do_syscall_64+0x31/0x40 arch/x86/entry/common.c:46
 entry_SYSCALL_64_after_hwframe+0x61/0xcb
RIP: 0033:0x7f0f305b9ae9
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:00007f0f3013c0c8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007f0f306d8f80 RCX: 00007f0f305b9ae9
RDX: 00000000200001c0 RSI: 00000000200006c0 RDI: 0000000020000640
RBP: 00007f0f3060547a R08: 0000000000000000 R09: 0000000000000000
R10: 000000003f000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000000b R14: 00007f0f306d8f80 R15: 00007ffda2b37688
Kernel Offset: disabled
Rebooting in 86400 seconds..