BUG: memory leak unreferenced object 0xffff888021fe4ae0 (size 16): comm "syz-executor.1", pid 8802, jiffies 4295467779 (age 17.010s) hex dump (first 16 bytes): 40 87 61 20 80 88 ff ff 00 e0 33 22 80 88 ff ff @.a ......3".... backtrace: [<00000000e59c2cf6>] kmalloc include/linux/slab.h:552 [inline] [<00000000e59c2cf6>] ext4_multi_mount_protect+0x861/0xb20 fs/ext4/mmp.c:367 [<0000000026a75cf2>] ext4_fill_super+0xa20e/0xcf20 fs/ext4/super.c:4774 [<00000000ce537cf4>] mount_bdev+0x331/0x3f0 fs/super.c:1419 [<000000007ff911a8>] legacy_get_tree+0x105/0x220 fs/fs_context.c:592 [<0000000087daff82>] vfs_get_tree+0x8e/0x2f0 fs/super.c:1549 [<000000006fe35b0c>] do_new_mount fs/namespace.c:2881 [inline] [<000000006fe35b0c>] path_mount+0x139a/0x2080 fs/namespace.c:3211 [<00000000577c03f4>] do_mount fs/namespace.c:3224 [inline] [<00000000577c03f4>] __do_sys_mount fs/namespace.c:3432 [inline] [<00000000577c03f4>] __se_sys_mount fs/namespace.c:3409 [inline] [<00000000577c03f4>] __x64_sys_mount+0x27e/0x300 fs/namespace.c:3409 [<00000000857e6743>] do_syscall_64+0x33/0x40 arch/x86/entry/common.c:46 [<00000000a8f519b3>] entry_SYSCALL_64_after_hwframe+0x44/0xa9 BUG: leak checking failed