BUG: memory leak unreferenced object 0xffff8880088c8f00 (size 16): comm "syz-executor.7", pid 11011, jiffies 4295948047 (age 20.228s) hex dump (first 16 bytes): 70 b5 e6 20 80 88 ff ff 00 60 c6 43 80 88 ff ff p.. .....`.C.... backtrace: [<000000002f0bc869>] kmalloc include/linux/slab.h:552 [inline] [<000000002f0bc869>] ext4_multi_mount_protect+0x861/0xb20 fs/ext4/mmp.c:367 [<00000000184d3f26>] ext4_fill_super+0xa20e/0xcf20 fs/ext4/super.c:4774 [<00000000e5ca2620>] mount_bdev+0x331/0x3f0 fs/super.c:1419 [<00000000587eb43b>] legacy_get_tree+0x105/0x220 fs/fs_context.c:592 [<00000000d3047d86>] vfs_get_tree+0x8e/0x2f0 fs/super.c:1549 [<00000000f22bd295>] do_new_mount fs/namespace.c:2881 [inline] [<00000000f22bd295>] path_mount+0x139a/0x2080 fs/namespace.c:3211 [<00000000ce2c433a>] do_mount fs/namespace.c:3224 [inline] [<00000000ce2c433a>] __do_sys_mount fs/namespace.c:3432 [inline] [<00000000ce2c433a>] __se_sys_mount fs/namespace.c:3409 [inline] [<00000000ce2c433a>] __x64_sys_mount+0x27e/0x300 fs/namespace.c:3409 [<000000008b67259f>] do_syscall_64+0x33/0x40 arch/x86/entry/common.c:46 [<0000000084cb9ea0>] entry_SYSCALL_64_after_hwframe+0x44/0xa9 BUG: leak checking failed