executing program
BUG: memory leak
unreferenced object 0xffff888108cb5040 (size 64):
  comm "syz-executor532", pid 7123, jiffies 4294942481 (age 7.820s)
  hex dump (first 32 bytes):
    01 00 00 00 20 69 6f 63 00 00 00 00 64 65 76 2f  .... ioc....dev/
    50 50 cb 08 81 88 ff ff 50 50 cb 08 81 88 ff ff  PP......PP......
  backtrace:
    [<00000000e620582a>] kmemleak_alloc_recursive include/linux/kmemleak.h:43 [inline]
    [<00000000e620582a>] slab_post_alloc_hook mm/slab.h:439 [inline]
    [<00000000e620582a>] slab_alloc mm/slab.c:3326 [inline]
    [<00000000e620582a>] kmem_cache_alloc_trace+0x13d/0x280 mm/slab.c:3553
    [<00000000a39cd283>] kmalloc include/linux/slab.h:547 [inline]
    [<00000000a39cd283>] vhost_net_ubuf_alloc drivers/vhost/net.c:240 [inline]
    [<00000000a39cd283>] vhost_net_set_backend drivers/vhost/net.c:1533 [inline]
    [<00000000a39cd283>] vhost_net_ioctl+0xb43/0xc10 drivers/vhost/net.c:1715
    [<000000006769099f>] vfs_ioctl fs/ioctl.c:46 [inline]
    [<000000006769099f>] file_ioctl fs/ioctl.c:509 [inline]
    [<000000006769099f>] do_vfs_ioctl+0x62a/0x810 fs/ioctl.c:696
    [<000000009a930129>] ksys_ioctl+0x86/0xb0 fs/ioctl.c:713
    [<000000009fe57c78>] __do_sys_ioctl fs/ioctl.c:720 [inline]
    [<000000009fe57c78>] __se_sys_ioctl fs/ioctl.c:718 [inline]
    [<000000009fe57c78>] __x64_sys_ioctl+0x1e/0x30 fs/ioctl.c:718
    [<0000000092220792>] do_syscall_64+0x76/0x1a0 arch/x86/entry/common.c:301
    [<000000009fa3adfa>] entry_SYSCALL_64_after_hwframe+0x44/0xa9