BUG: memory leak
unreferenced object 0xffff888106918d00 (size 32):
  comm "syz-executor.5", pid 8241, jiffies 4295046521 (age 9.380s)
  hex dump (first 32 bytes):
    34 32 39 35 30 34 36 35 32 31 00 00 00 00 00 00  4295046521......
    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
  backtrace:
    [<00000000977643a4>] kmalloc include/linux/slab.h:555 [inline]
    [<00000000977643a4>] v9fs_random_cachetag fs/9p/cache.c:36 [inline]
    [<00000000977643a4>] v9fs_cache_session_get_cookie+0x98/0x100 fs/9p/cache.c:52
    [<0000000042b677a5>] v9fs_session_init+0x5a1/0x840 fs/9p/v9fs.c:470
    [<00000000c9be2729>] v9fs_mount+0x56/0x390 fs/9p/vfs_super.c:124
    [<000000005e6a65a4>] legacy_get_tree+0x26/0x70 fs/fs_context.c:592
    [<00000000ea073746>] vfs_get_tree+0x28/0xe0 fs/super.c:1547
    [<00000000361b449c>] do_new_mount fs/namespace.c:2874 [inline]
    [<00000000361b449c>] do_mount+0xa5b/0xe40 fs/namespace.c:3199
    [<000000003dcab55e>] __do_sys_mount fs/namespace.c:3409 [inline]
    [<000000003dcab55e>] __se_sys_mount fs/namespace.c:3386 [inline]
    [<000000003dcab55e>] __x64_sys_mount+0xb0/0x120 fs/namespace.c:3386
    [<000000008c2e7a58>] do_syscall_64+0x4c/0xe0 arch/x86/entry/common.c:384
    [<000000003c4696dd>] entry_SYSCALL_64_after_hwframe+0x44/0xa9

BUG: memory leak
unreferenced object 0xffff888106a21c00 (size 32):
  comm "syz-executor.3", pid 8266, jiffies 4295046555 (age 9.040s)
  hex dump (first 32 bytes):
    34 32 39 35 30 34 36 35 35 35 00 72 74 75 61 6c  4295046555.rtual
    2f 62 64 69 2f 39 70 2d 31 32 00 00 00 00 00 00  /bdi/9p-12......
  backtrace:
    [<00000000977643a4>] kmalloc include/linux/slab.h:555 [inline]
    [<00000000977643a4>] v9fs_random_cachetag fs/9p/cache.c:36 [inline]
    [<00000000977643a4>] v9fs_cache_session_get_cookie+0x98/0x100 fs/9p/cache.c:52
    [<0000000042b677a5>] v9fs_session_init+0x5a1/0x840 fs/9p/v9fs.c:470
    [<00000000c9be2729>] v9fs_mount+0x56/0x390 fs/9p/vfs_super.c:124
    [<000000005e6a65a4>] legacy_get_tree+0x26/0x70 fs/fs_context.c:592
    [<00000000ea073746>] vfs_get_tree+0x28/0xe0 fs/super.c:1547
    [<00000000361b449c>] do_new_mount fs/namespace.c:2874 [inline]
    [<00000000361b449c>] do_mount+0xa5b/0xe40 fs/namespace.c:3199
    [<000000003dcab55e>] __do_sys_mount fs/namespace.c:3409 [inline]
    [<000000003dcab55e>] __se_sys_mount fs/namespace.c:3386 [inline]
    [<000000003dcab55e>] __x64_sys_mount+0xb0/0x120 fs/namespace.c:3386
    [<000000008c2e7a58>] do_syscall_64+0x4c/0xe0 arch/x86/entry/common.c:384
    [<000000003c4696dd>] entry_SYSCALL_64_after_hwframe+0x44/0xa9