EXT4-fs (loop4): mount failed EXT4-fs (loop4): ext4_check_descriptors: Block bitmap for group 0 overlaps superblock EXT4-fs (loop4): ext4_check_descriptors: Inode bitmap for group 0 overlaps superblock EXT4-fs (loop4): ext4_check_descriptors: Inode table for group 0 overlaps superblock ------------[ cut here ]------------ WARNING: CPU: 0 PID: 16654 at fs/ext4/ext4.h:2721 ext4_has_metadata_csum fs/ext4/ext4.h:2721 [inline] WARNING: CPU: 0 PID: 16654 at fs/ext4/ext4.h:2721 ext4_group_desc_csum.isra.0+0x537/0xa40 fs/ext4/super.c:2190 Kernel panic - not syncing: panic_on_warn set ... CPU: 0 PID: 16654 Comm: syz-executor.4 Not tainted 4.9.189+ #2 ffff8801b016f798 ffffffff81b65c01 0000000000000000 ffffffff82a3b1c0 00000000ffffffff 0000000000000000 0000000000000009 ffff8801b016f878 ffffffff813feb5a 0000000041b58ab3 ffffffff82e3260d ffffffff813fe981 Call Trace: [<00000000426ed3cf>] __dump_stack lib/dump_stack.c:15 [inline] [<00000000426ed3cf>] dump_stack+0xc1/0x120 lib/dump_stack.c:51 [<00000000a43e3d00>] panic+0x1d9/0x3bd kernel/panic.c:180 [<00000000e89cd00f>] __warn.cold+0x2f/0x2f kernel/panic.c:546 [<000000007b57ec27>] warn_slowpath_null+0x2d/0x40 kernel/panic.c:589 [<00000000a3485fc7>] ext4_has_metadata_csum fs/ext4/ext4.h:2721 [inline] [<00000000a3485fc7>] ext4_group_desc_csum.isra.0+0x537/0xa40 fs/ext4/super.c:2190 [<0000000081d91fc3>] ext4_group_desc_csum_verify+0x111/0x170 fs/ext4/super.c:2232 [<00000000c226df8c>] ext4_check_descriptors fs/ext4/super.c:2347 [inline] [<00000000c226df8c>] ext4_fill_super+0x4fbe/0xb7a0 fs/ext4/super.c:3959 [<00000000ed67ae7c>] mount_bdev+0x2b8/0x360 fs/super.c:1110 [<00000000cc53110b>] ext4_mount+0x35/0x40 fs/ext4/super.c:5627 [<0000000046160e87>] mount_fs+0x27c/0x380 fs/super.c:1216 [<00000000bd1b91a1>] vfs_kern_mount.part.0+0xcd/0x4c0 fs/namespace.c:1000 [<000000002e89a4b6>] vfs_kern_mount fs/namespace.c:982 [inline] [<000000002e89a4b6>] do_new_mount fs/namespace.c:2549 [inline] [<000000002e89a4b6>] do_mount+0x3c4/0x2970 fs/namespace.c:2871 [<00000000f719d5f5>] SYSC_mount fs/namespace.c:3087 [inline] [<00000000f719d5f5>] SyS_mount+0xab/0x120 fs/namespace.c:3064 [<00000000fb83ea02>] do_syscall_64+0x1ad/0x5c0 arch/x86/entry/common.c:288 [<00000000df7903c7>] entry_SYSCALL_64_after_swapgs+0x5d/0xdb Kernel Offset: disabled Rebooting in 86400 seconds..