BUG: memory leak unreferenced object 0xffff888105c1aa20 (size 32): comm "syz-executor.5", pid 8373, jiffies 4294957328 (age 10.780s) hex dump (first 32 bytes): 34 32 39 34 39 35 37 33 32 38 00 00 00 00 00 00 4294957328...... 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ backtrace: [<000000001df3abfc>] kmalloc include/linux/slab.h:555 [inline] [<000000001df3abfc>] v9fs_random_cachetag fs/9p/cache.c:36 [inline] [<000000001df3abfc>] v9fs_cache_session_get_cookie+0x98/0x100 fs/9p/cache.c:52 [<000000003ba2c1c7>] v9fs_session_init+0x5a1/0x840 fs/9p/v9fs.c:470 [<000000007d2dfce1>] v9fs_mount+0x56/0x390 fs/9p/vfs_super.c:124 [<0000000033cd3deb>] legacy_get_tree+0x26/0x70 fs/fs_context.c:592 [<000000009dbc1f33>] vfs_get_tree+0x28/0xe0 fs/super.c:1547 [<00000000f656b768>] do_new_mount fs/namespace.c:2874 [inline] [<00000000f656b768>] do_mount+0xa5b/0xe40 fs/namespace.c:3199 [<000000007cb4d228>] __do_sys_mount fs/namespace.c:3409 [inline] [<000000007cb4d228>] __se_sys_mount fs/namespace.c:3386 [inline] [<000000007cb4d228>] __x64_sys_mount+0xb0/0x120 fs/namespace.c:3386 [<00000000ea0f4c7f>] do_syscall_64+0x4c/0xe0 arch/x86/entry/common.c:384 [<000000009ae9a227>] entry_SYSCALL_64_after_hwframe+0x44/0xa9