BUG: memory leak unreferenced object 0xffff888047dfe7a0 (size 16): comm "syz-executor.7", pid 16266, jiffies 4296900266 (age 19.342s) hex dump (first 16 bytes): 88 84 94 49 80 88 ff ff 00 a0 57 54 80 88 ff ff ...I......WT.... backtrace: [<000000007bdd47a4>] kmalloc include/linux/slab.h:552 [inline] [<000000007bdd47a4>] ext4_multi_mount_protect+0x861/0xb20 fs/ext4/mmp.c:367 [<00000000c0e8577e>] ext4_fill_super+0xa20e/0xcf20 fs/ext4/super.c:4774 [<00000000cadda694>] mount_bdev+0x331/0x3f0 fs/super.c:1419 [<0000000001ce51cd>] legacy_get_tree+0x105/0x220 fs/fs_context.c:592 [<0000000072bdf2fa>] vfs_get_tree+0x8e/0x2f0 fs/super.c:1549 [<00000000a5885d1f>] do_new_mount fs/namespace.c:2881 [inline] [<00000000a5885d1f>] path_mount+0x139a/0x2080 fs/namespace.c:3211 [<000000003d839305>] do_mount fs/namespace.c:3224 [inline] [<000000003d839305>] __do_sys_mount fs/namespace.c:3432 [inline] [<000000003d839305>] __se_sys_mount fs/namespace.c:3409 [inline] [<000000003d839305>] __x64_sys_mount+0x27e/0x300 fs/namespace.c:3409 [<0000000008e2e32d>] do_syscall_64+0x33/0x40 arch/x86/entry/common.c:46 [<00000000b0f26fe6>] entry_SYSCALL_64_after_hwframe+0x44/0xa9 BUG: leak checking failed