sendmsg$inet6(r0, &(0x7f00000006c0)={0x0, 0x0, &(0x7f0000000540)=[{&(0x7f00000001c0)="b3", 0x1}], 0x1}, 0x10044001)
recvmmsg(r0, &(0x7f0000001e40)=[{{0x0, 0x0, 0x0}}], 0x1, 0x161, 0x0)
BUG: memory leak
unreferenced object 0xffff88800e89ee40 (size 32):
  comm "syz-executor.1", pid 12304, jiffies 4296626704 (age 26.698s)
  hex dump (first 32 bytes):
    39 70 2d 66 63 61 6c 6c 2d 63 61 63 68 65 2d 32  9p-fcall-cache-2
    34 36 00 0e 80 88 ff ff 00 00 00 00 00 00 00 00  46..............
  backtrace:
    [<00000000b02f2e29>] kstrdup+0x36/0x70 mm/util.c:60
    [<00000000f9363f30>] kstrdup_const+0x53/0x80 mm/util.c:83
    [<000000005dab13ea>] kvasprintf_const+0x10c/0x1a0 lib/kasprintf.c:48
    [<0000000097ddcc37>] kobject_set_name_vargs+0x56/0x150 lib/kobject.c:297
    [<000000003a6d0b1f>] kobject_add_varg lib/kobject.c:392 [inline]
    [<000000003a6d0b1f>] kobject_init_and_add+0xc9/0x160 lib/kobject.c:481
    [<00000000191c8eff>] sysfs_slab_add+0x172/0x200 mm/slub.c:5626
    [<00000000807ea200>] __kmem_cache_create+0x3db/0x520 mm/slub.c:4445
    [<00000000cadd7235>] create_cache mm/slab_common.c:255 [inline]
    [<00000000cadd7235>] kmem_cache_create_usercopy+0x1db/0x2f0 mm/slab_common.c:350
    [<000000000da6544b>] p9_client_create+0xc6a/0x1230 net/9p/client.c:1074
    [<00000000d35e58fa>] v9fs_session_init+0x1dd/0x1680 fs/9p/v9fs.c:406
    [<00000000129f96de>] v9fs_mount+0x79/0x8f0 fs/9p/vfs_super.c:126
    [<00000000f7c254f7>] legacy_get_tree+0x105/0x220 fs/fs_context.c:593
    [<00000000346d2362>] vfs_get_tree+0x8e/0x300 fs/super.c:1572
    [<00000000fb93ae86>] do_new_mount fs/namespace.c:2917 [inline]
    [<00000000fb93ae86>] path_mount+0x1429/0x2120 fs/namespace.c:3247
    [<00000000ed2f3ac2>] do_mount fs/namespace.c:3260 [inline]
    [<00000000ed2f3ac2>] __do_sys_mount fs/namespace.c:3468 [inline]
    [<00000000ed2f3ac2>] __se_sys_mount fs/namespace.c:3445 [inline]
    [<00000000ed2f3ac2>] __x64_sys_mount+0x282/0x300 fs/namespace.c:3445
    [<0000000068903c74>] do_syscall_64+0x33/0x40 arch/x86/entry/common.c:46

BUG: leak checking failed