EXT2-fs (loop0): error: ext2_check_descriptors: Block bitmap for group 0 not in group (block 0)! Kernel panic - not syncing: EXT2-fs: panic from previous error CPU: 1 PID: 15774 Comm: syz-executor0 Not tainted 4.9.105-gd7e64f8 #40 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 ffff8801d516f918 ffffffff81eb41a9 ffffffff83d0a940 00000000ffffffff ffff8801d4a41100 0000000000000001 ffffffff83d0b740 ffff8801d516f9d8 ffffffff81421e15 0000000041b58ab3 ffffffff843b9990 ffffffff81421c56 Call Trace: [] __dump_stack lib/dump_stack.c:15 [inline] [] dump_stack+0xc1/0x128 lib/dump_stack.c:51 [] panic+0x1bf/0x3bc kernel/panic.c:179 [] ext2_error.cold.10+0xc2/0x166 fs/ext2/super.c:74 [] ext2_check_descriptors fs/ext2/super.c:689 [inline] [] ext2_fill_super+0x263e/0x2c90 fs/ext2/super.c:1066 [] mount_bdev+0x2c7/0x390 fs/super.c:1100 [] ext2_mount+0x34/0x40 fs/ext2/super.c:1445 [] mount_fs+0x28c/0x370 fs/super.c:1206 [] vfs_kern_mount.part.29+0xd1/0x3d0 fs/namespace.c:991 [] vfs_kern_mount fs/namespace.c:973 [inline] [] do_new_mount fs/namespace.c:2513 [inline] [] do_mount+0x3c9/0x2740 fs/namespace.c:2835 [] SYSC_mount fs/namespace.c:3051 [inline] [] SyS_mount+0xfe/0x110 fs/namespace.c:3028 [] do_syscall_64+0x1a6/0x490 arch/x86/entry/common.c:282 [] entry_SYSCALL_64_after_swapgs+0x5d/0xdb Dumping ftrace buffer: (ftrace buffer empty) Kernel Offset: disabled Rebooting in 86400 seconds..