r0 = socket$netlink(0x10, 0x3, 0x0)
sendmsg$nl_generic(r0, &(0x7f0000000000)={0x0, 0x0, &(0x7f00000000c0)={&(0x7f0000000100)=ANY=[@ANYBLOB="1400000019000100"/20], 0x14}}, 0x0)
BUG: memory leak
unreferenced object 0xffff888008d0b340 (size 32):
  comm "syz-executor.2", pid 36302, jiffies 4296269303 (age 21.056s)
  hex dump (first 32 bytes):
    39 70 2d 66 63 61 6c 6c 2d 63 61 63 68 65 2d 33  9p-fcall-cache-3
    39 36 00 08 80 88 ff ff 00 00 00 00 00 00 00 00  96..............
  backtrace:
    [<0000000071705c8a>] kstrdup+0x36/0x70 mm/util.c:60
    [<000000005cab68e1>] kstrdup_const+0x53/0x80 mm/util.c:83
    [<000000008e37f0de>] kvasprintf_const+0x10c/0x1a0 lib/kasprintf.c:48
    [<000000008854146a>] kobject_set_name_vargs+0x56/0x150 lib/kobject.c:297
    [<00000000d863dd5f>] kobject_add_varg lib/kobject.c:392 [inline]
    [<00000000d863dd5f>] kobject_init_and_add+0xc9/0x160 lib/kobject.c:481
    [<00000000f925b94e>] sysfs_slab_add+0x172/0x200 mm/slub.c:5631
    [<000000004baca4cc>] __kmem_cache_create+0x3db/0x520 mm/slub.c:4450
    [<0000000010a3d705>] create_cache mm/slab_common.c:255 [inline]
    [<0000000010a3d705>] kmem_cache_create_usercopy+0x1db/0x2f0 mm/slab_common.c:350
    [<00000000c310b977>] p9_client_create+0xc6a/0x1230 net/9p/client.c:1074
    [<00000000dc9c8321>] v9fs_session_init+0x1dd/0x1680 fs/9p/v9fs.c:406
    [<000000000e72a373>] v9fs_mount+0x79/0x8f0 fs/9p/vfs_super.c:126
    [<00000000c29d2227>] legacy_get_tree+0x105/0x220 fs/fs_context.c:593
    [<00000000116cace6>] vfs_get_tree+0x8e/0x300 fs/super.c:1572
    [<000000002c314a07>] do_new_mount fs/namespace.c:2997 [inline]
    [<000000002c314a07>] path_mount+0x1490/0x21e0 fs/namespace.c:3327
    [<0000000039cf9a2e>] do_mount fs/namespace.c:3340 [inline]
    [<0000000039cf9a2e>] __do_sys_mount fs/namespace.c:3548 [inline]
    [<0000000039cf9a2e>] __se_sys_mount fs/namespace.c:3525 [inline]
    [<0000000039cf9a2e>] __x64_sys_mount+0x282/0x300 fs/namespace.c:3525
    [<00000000be477830>] do_syscall_64+0x33/0x40 arch/x86/entry/common.c:46

BUG: leak checking failed