BUG: memory leak unreferenced object 0xffff888008f3efa0 (size 16): comm "syz-executor.0", pid 7878, jiffies 4295489718 (age 17.695s) hex dump (first 16 bytes): c8 8b c9 44 80 88 ff ff 00 60 47 44 80 88 ff ff ...D.....`GD.... backtrace: [<00000000c17e2862>] kmalloc include/linux/slab.h:552 [inline] [<00000000c17e2862>] ext4_multi_mount_protect+0x861/0xb20 fs/ext4/mmp.c:367 [<0000000098fe73dc>] ext4_fill_super+0xa20e/0xcf20 fs/ext4/super.c:4774 [<00000000029506a3>] mount_bdev+0x331/0x3f0 fs/super.c:1419 [<000000001f8a4a6e>] legacy_get_tree+0x105/0x220 fs/fs_context.c:592 [<000000009c566539>] vfs_get_tree+0x8e/0x2f0 fs/super.c:1549 [<000000003f174d72>] do_new_mount fs/namespace.c:2881 [inline] [<000000003f174d72>] path_mount+0x139a/0x2080 fs/namespace.c:3211 [<00000000599cb655>] do_mount fs/namespace.c:3224 [inline] [<00000000599cb655>] __do_sys_mount fs/namespace.c:3432 [inline] [<00000000599cb655>] __se_sys_mount fs/namespace.c:3409 [inline] [<00000000599cb655>] __x64_sys_mount+0x27e/0x300 fs/namespace.c:3409 [<000000001469cdda>] do_syscall_64+0x33/0x40 arch/x86/entry/common.c:46 [<000000002abc0fd2>] entry_SYSCALL_64_after_hwframe+0x44/0xa9 BUG: leak checking failed