BUG: memory leak
unreferenced object 0xffff888106c7b420 (size 32):
  comm "syz-executor.1", pid 8235, jiffies 4295046041 (age 9.420s)
  hex dump (first 32 bytes):
    34 32 39 35 30 34 36 30 34 31 00 72 74 75 61 6c  4295046041.rtual
    2f 62 64 69 2f 39 70 2d 34 00 00 00 00 00 00 00  /bdi/9p-4.......
  backtrace:
    [<000000004a470b2a>] kmalloc include/linux/slab.h:555 [inline]
    [<000000004a470b2a>] v9fs_random_cachetag fs/9p/cache.c:36 [inline]
    [<000000004a470b2a>] v9fs_cache_session_get_cookie+0x98/0x100 fs/9p/cache.c:52
    [<000000002087333a>] v9fs_session_init+0x5a1/0x840 fs/9p/v9fs.c:470
    [<00000000ac9860f6>] v9fs_mount+0x56/0x390 fs/9p/vfs_super.c:124
    [<00000000c9aeca1c>] legacy_get_tree+0x26/0x70 fs/fs_context.c:592
    [<00000000a5910374>] vfs_get_tree+0x28/0xe0 fs/super.c:1547
    [<0000000098f0de60>] do_new_mount fs/namespace.c:2875 [inline]
    [<0000000098f0de60>] do_mount+0xa63/0xe40 fs/namespace.c:3200
    [<000000009f439596>] __do_sys_mount fs/namespace.c:3410 [inline]
    [<000000009f439596>] __se_sys_mount fs/namespace.c:3387 [inline]
    [<000000009f439596>] __x64_sys_mount+0xb0/0x120 fs/namespace.c:3387
    [<00000000c4f06a6d>] do_syscall_64+0x4c/0xe0 arch/x86/entry/common.c:384
    [<0000000003720873>] entry_SYSCALL_64_after_hwframe+0x44/0xa9

BUG: memory leak
unreferenced object 0xffff888106c1a140 (size 32):
  comm "syz-executor.3", pid 8271, jiffies 4295046066 (age 9.170s)
  hex dump (first 32 bytes):
    34 32 39 35 30 34 36 30 36 36 00 04 00 ea ff ff  4295046066......
    40 06 1b 04 00 ea ff ff 00 95 1b 04 00 ea ff ff  @...............
  backtrace:
    [<000000004a470b2a>] kmalloc include/linux/slab.h:555 [inline]
    [<000000004a470b2a>] v9fs_random_cachetag fs/9p/cache.c:36 [inline]
    [<000000004a470b2a>] v9fs_cache_session_get_cookie+0x98/0x100 fs/9p/cache.c:52
    [<000000002087333a>] v9fs_session_init+0x5a1/0x840 fs/9p/v9fs.c:470
    [<00000000ac9860f6>] v9fs_mount+0x56/0x390 fs/9p/vfs_super.c:124
    [<00000000c9aeca1c>] legacy_get_tree+0x26/0x70 fs/fs_context.c:592
    [<00000000a5910374>] vfs_get_tree+0x28/0xe0 fs/super.c:1547
    [<0000000098f0de60>] do_new_mount fs/namespace.c:2875 [inline]
    [<0000000098f0de60>] do_mount+0xa63/0xe40 fs/namespace.c:3200
    [<000000009f439596>] __do_sys_mount fs/namespace.c:3410 [inline]
    [<000000009f439596>] __se_sys_mount fs/namespace.c:3387 [inline]
    [<000000009f439596>] __x64_sys_mount+0xb0/0x120 fs/namespace.c:3387
    [<00000000c4f06a6d>] do_syscall_64+0x4c/0xe0 arch/x86/entry/common.c:384
    [<0000000003720873>] entry_SYSCALL_64_after_hwframe+0x44/0xa9

BUG: memory leak
unreferenced object 0xffff888106c7ba40 (size 32):
  comm "syz-executor.2", pid 8319, jiffies 4295046077 (age 9.060s)
  hex dump (first 32 bytes):
    34 32 39 35 30 34 36 30 37 37 00 30 30 30 30 30  4295046077.00000
    30 34 00 00 00 00 00 00 00 00 00 00 00 00 00 00  04..............
  backtrace:
    [<000000004a470b2a>] kmalloc include/linux/slab.h:555 [inline]
    [<000000004a470b2a>] v9fs_random_cachetag fs/9p/cache.c:36 [inline]
    [<000000004a470b2a>] v9fs_cache_session_get_cookie+0x98/0x100 fs/9p/cache.c:52
    [<000000002087333a>] v9fs_session_init+0x5a1/0x840 fs/9p/v9fs.c:470
    [<00000000ac9860f6>] v9fs_mount+0x56/0x390 fs/9p/vfs_super.c:124
    [<00000000c9aeca1c>] legacy_get_tree+0x26/0x70 fs/fs_context.c:592
    [<00000000a5910374>] vfs_get_tree+0x28/0xe0 fs/super.c:1547
    [<0000000098f0de60>] do_new_mount fs/namespace.c:2875 [inline]
    [<0000000098f0de60>] do_mount+0xa63/0xe40 fs/namespace.c:3200
    [<000000009f439596>] __do_sys_mount fs/namespace.c:3410 [inline]
    [<000000009f439596>] __se_sys_mount fs/namespace.c:3387 [inline]
    [<000000009f439596>] __x64_sys_mount+0xb0/0x120 fs/namespace.c:3387
    [<00000000c4f06a6d>] do_syscall_64+0x4c/0xe0 arch/x86/entry/common.c:384
    [<0000000003720873>] entry_SYSCALL_64_after_hwframe+0x44/0xa9

BUG: memory leak
unreferenced object 0xffff888106f80980 (size 32):
  comm "syz-executor.0", pid 8323, jiffies 4295046077 (age 9.060s)
  hex dump (first 32 bytes):
    34 32 39 35 30 34 36 30 37 37 00 00 00 00 00 00  4295046077......
    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
  backtrace:
    [<000000004a470b2a>] kmalloc include/linux/slab.h:555 [inline]
    [<000000004a470b2a>] v9fs_random_cachetag fs/9p/cache.c:36 [inline]
    [<000000004a470b2a>] v9fs_cache_session_get_cookie+0x98/0x100 fs/9p/cache.c:52
    [<000000002087333a>] v9fs_session_init+0x5a1/0x840 fs/9p/v9fs.c:470
    [<00000000ac9860f6>] v9fs_mount+0x56/0x390 fs/9p/vfs_super.c:124
    [<00000000c9aeca1c>] legacy_get_tree+0x26/0x70 fs/fs_context.c:592
    [<00000000a5910374>] vfs_get_tree+0x28/0xe0 fs/super.c:1547
    [<0000000098f0de60>] do_new_mount fs/namespace.c:2875 [inline]
    [<0000000098f0de60>] do_mount+0xa63/0xe40 fs/namespace.c:3200
    [<000000009f439596>] __do_sys_mount fs/namespace.c:3410 [inline]
    [<000000009f439596>] __se_sys_mount fs/namespace.c:3387 [inline]
    [<000000009f439596>] __x64_sys_mount+0xb0/0x120 fs/namespace.c:3387
    [<00000000c4f06a6d>] do_syscall_64+0x4c/0xe0 arch/x86/entry/common.c:384
    [<0000000003720873>] entry_SYSCALL_64_after_hwframe+0x44/0xa9