2019/09/30 13:35:53 executed programs: 17
BUG: memory leak
unreferenced object 0xffff88810d5c4c20 (size 32):
  comm "syz-executor.1", pid 6905, jiffies 4294950857 (age 14.400s)
  hex dump (first 32 bytes):
    34 32 39 34 39 35 30 38 35 37 00 00 00 00 00 00  4294950857......
    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
  backtrace:
    [<00000000f3ea8783>] kmemleak_alloc_recursive include/linux/kmemleak.h:43 [inline]
    [<00000000f3ea8783>] slab_post_alloc_hook mm/slab.h:586 [inline]
    [<00000000f3ea8783>] slab_alloc mm/slab.c:3319 [inline]
    [<00000000f3ea8783>] kmem_cache_alloc_trace+0x145/0x2c0 mm/slab.c:3548
    [<00000000100f79f7>] kmalloc include/linux/slab.h:552 [inline]
    [<00000000100f79f7>] v9fs_random_cachetag fs/9p/cache.c:36 [inline]
    [<00000000100f79f7>] v9fs_cache_session_get_cookie+0xa6/0x110 fs/9p/cache.c:52
    [<00000000a93983fd>] v9fs_session_init+0x5c3/0x880 fs/9p/v9fs.c:470
    [<0000000007279a8b>] v9fs_mount+0x5e/0x3c0 fs/9p/vfs_super.c:124
    [<0000000077f5f68a>] legacy_get_tree+0x27/0x80 fs/fs_context.c:647
    [<00000000c8d35b8d>] vfs_get_tree+0x2d/0xe0 fs/super.c:1542
    [<0000000066ee7ec5>] do_new_mount fs/namespace.c:2823 [inline]
    [<0000000066ee7ec5>] do_mount+0x95f/0xc60 fs/namespace.c:3143
    [<000000009353ea8a>] ksys_mount+0xab/0x120 fs/namespace.c:3352
    [<00000000e777720e>] __do_sys_mount fs/namespace.c:3366 [inline]
    [<00000000e777720e>] __se_sys_mount fs/namespace.c:3363 [inline]
    [<00000000e777720e>] __x64_sys_mount+0x26/0x30 fs/namespace.c:3363
    [<000000000734f091>] do_syscall_64+0x73/0x1f0 arch/x86/entry/common.c:290
    [<000000006f535533>] entry_SYSCALL_64_after_hwframe+0x44/0xa9