netdev - Re: memory leak in virtio_transport_send_pkt

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Date:   Wed, 31 Mar 2021 10:04:18 +0100
From:   Stefan Hajnoczi <stefanha@...hat.com>
To:     sgarzare@...hat.com
Cc:     davem@...emloft.net, kuba@...nel.org, kvm@...r.kernel.org,
        linux-kernel@...r.kernel.org, netdev@...r.kernel.org,
        sgarzare@...hat.com, syzkaller-bugs@...glegroups.com,
        virtualization@...ts.linux-foundation.org,
        syzbot <syzbot+24452624fc4c571eedd9@...kaller.appspotmail.com>
Subject: Re: memory leak in virtio_transport_send_pkt_info

On Mon, Feb 08, 2021 at 08:39:30AM -0800, syzbot wrote:
> Hello,
> 
> syzbot found the following issue on:
> 
> HEAD commit:    9f29bd8b Merge tag 'fs_for_v5.11-rc5' of git://git.kernel...
> git tree:       upstream
> console output: https://syzkaller.appspot.com/x/log.txt?x=11e435af500000
> kernel config:  https://syzkaller.appspot.com/x/.config?x=162a0109d6ff731f
> dashboard link: https://syzkaller.appspot.com/bug?extid=24452624fc4c571eedd9
> compiler:       gcc (GCC) 10.1.0-syz 20200507
> syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=135dd494d00000
> C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=128787e7500000
> 
> IMPORTANT: if you fix the issue, please add the following tag to the commit:
> Reported-by: syzbot+24452624fc4c571eedd9@...kaller.appspotmail.com

Hi Stefano,
Looks like tx packets are still queued when the syzkaller leak check
runs. I don't see a fix for this in linux.git. Have you already looked
at this?

Stefan

> 
> executing program
> BUG: memory leak
> unreferenced object 0xffff88811477d380 (size 96):
>   comm "syz-executor196", pid 8793, jiffies 4294968272 (age 26.670s)
>   hex dump (first 32 bytes):
>     01 00 00 00 00 00 00 00 ff ff ff ff 00 00 00 00  ................
>     ba 34 8c fe 00 00 00 00 00 00 01 00 01 00 05 00  .4..............
>   backtrace:
>     [<0000000051681be3>] kmalloc include/linux/slab.h:552 [inline]
>     [<0000000051681be3>] kzalloc include/linux/slab.h:682 [inline]
>     [<0000000051681be3>] virtio_transport_alloc_pkt+0x41/0x290 net/vmw_vsock/virtio_transport_common.c:51
>     [<0000000036c2d6e6>] virtio_transport_send_pkt_info+0x105/0x1b0 net/vmw_vsock/virtio_transport_common.c:209
>     [<00000000dd27435f>] virtio_transport_stream_enqueue+0x58/0x80 net/vmw_vsock/virtio_transport_common.c:674
>     [<00000000d7e8274a>] vsock_stream_sendmsg+0x4f7/0x590 net/vmw_vsock/af_vsock.c:1800
>     [<00000000d2b531e6>] sock_sendmsg_nosec net/socket.c:652 [inline]
>     [<00000000d2b531e6>] sock_sendmsg+0x56/0x80 net/socket.c:672
>     [<00000000803a63df>] ____sys_sendmsg+0x17a/0x390 net/socket.c:2345
>     [<000000009d42f642>] ___sys_sendmsg+0x8b/0xd0 net/socket.c:2399
>     [<000000000a37ed0e>] __sys_sendmmsg+0xed/0x290 net/socket.c:2489
>     [<00000000324c1c73>] __do_sys_sendmmsg net/socket.c:2518 [inline]
>     [<00000000324c1c73>] __se_sys_sendmmsg net/socket.c:2515 [inline]
>     [<00000000324c1c73>] __x64_sys_sendmmsg+0x24/0x30 net/socket.c:2515
>     [<000000004e7b2960>] do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46
>     [<000000002615f594>] entry_SYSCALL_64_after_hwframe+0x44/0xa9
> 
> BUG: memory leak
> unreferenced object 0xffff88811477d280 (size 96):
>   comm "syz-executor196", pid 8793, jiffies 4294968272 (age 26.670s)
>   hex dump (first 32 bytes):
>     01 00 00 00 00 00 00 00 ff ff ff ff 00 00 00 00  ................
>     ba 34 8c fe 00 00 00 00 00 00 01 00 01 00 05 00  .4..............
>   backtrace:
>     [<0000000051681be3>] kmalloc include/linux/slab.h:552 [inline]
>     [<0000000051681be3>] kzalloc include/linux/slab.h:682 [inline]
>     [<0000000051681be3>] virtio_transport_alloc_pkt+0x41/0x290 net/vmw_vsock/virtio_transport_common.c:51
>     [<0000000036c2d6e6>] virtio_transport_send_pkt_info+0x105/0x1b0 net/vmw_vsock/virtio_transport_common.c:209
>     [<00000000dd27435f>] virtio_transport_stream_enqueue+0x58/0x80 net/vmw_vsock/virtio_transport_common.c:674
>     [<00000000d7e8274a>] vsock_stream_sendmsg+0x4f7/0x590 net/vmw_vsock/af_vsock.c:1800
>     [<00000000d2b531e6>] sock_sendmsg_nosec net/socket.c:652 [inline]
>     [<00000000d2b531e6>] sock_sendmsg+0x56/0x80 net/socket.c:672
>     [<00000000803a63df>] ____sys_sendmsg+0x17a/0x390 net/socket.c:2345
>     [<000000009d42f642>] ___sys_sendmsg+0x8b/0xd0 net/socket.c:2399
>     [<000000000a37ed0e>] __sys_sendmmsg+0xed/0x290 net/socket.c:2489
>     [<00000000324c1c73>] __do_sys_sendmmsg net/socket.c:2518 [inline]
>     [<00000000324c1c73>] __se_sys_sendmmsg net/socket.c:2515 [inline]
>     [<00000000324c1c73>] __x64_sys_sendmmsg+0x24/0x30 net/socket.c:2515
>     [<000000004e7b2960>] do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46
>     [<000000002615f594>] entry_SYSCALL_64_after_hwframe+0x44/0xa9
> 
> BUG: memory leak
> unreferenced object 0xffff88811477d200 (size 96):
>   comm "syz-executor196", pid 8793, jiffies 4294968272 (age 26.670s)
>   hex dump (first 32 bytes):
>     01 00 00 00 00 00 00 00 ff ff ff ff 00 00 00 00  ................
>     ba 34 8c fe 00 00 00 00 00 00 01 00 01 00 05 00  .4..............
>   backtrace:
>     [<0000000051681be3>] kmalloc include/linux/slab.h:552 [inline]
>     [<0000000051681be3>] kzalloc include/linux/slab.h:682 [inline]
>     [<0000000051681be3>] virtio_transport_alloc_pkt+0x41/0x290 net/vmw_vsock/virtio_transport_common.c:51
>     [<0000000036c2d6e6>] virtio_transport_send_pkt_info+0x105/0x1b0 net/vmw_vsock/virtio_transport_common.c:209
>     [<00000000dd27435f>] virtio_transport_stream_enqueue+0x58/0x80 net/vmw_vsock/virtio_transport_common.c:674
>     [<00000000d7e8274a>] vsock_stream_sendmsg+0x4f7/0x590 net/vmw_vsock/af_vsock.c:1800
>     [<00000000d2b531e6>] sock_sendmsg_nosec net/socket.c:652 [inline]
>     [<00000000d2b531e6>] sock_sendmsg+0x56/0x80 net/socket.c:672
>     [<00000000803a63df>] ____sys_sendmsg+0x17a/0x390 net/socket.c:2345
>     [<000000009d42f642>] ___sys_sendmsg+0x8b/0xd0 net/socket.c:2399
>     [<000000000a37ed0e>] __sys_sendmmsg+0xed/0x290 net/socket.c:2489
>     [<00000000324c1c73>] __do_sys_sendmmsg net/socket.c:2518 [inline]
>     [<00000000324c1c73>] __se_sys_sendmmsg net/socket.c:2515 [inline]
>     [<00000000324c1c73>] __x64_sys_sendmmsg+0x24/0x30 net/socket.c:2515
>     [<000000004e7b2960>] do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46
>     [<000000002615f594>] entry_SYSCALL_64_after_hwframe+0x44/0xa9
> 
> BUG: memory leak
> unreferenced object 0xffff88811477d180 (size 96):
>   comm "syz-executor196", pid 8793, jiffies 4294968272 (age 26.670s)
>   hex dump (first 32 bytes):
>     01 00 00 00 00 00 00 00 ff ff ff ff 00 00 00 00  ................
>     ba 34 8c fe 00 00 00 00 00 00 01 00 01 00 05 00  .4..............
>   backtrace:
>     [<0000000051681be3>] kmalloc include/linux/slab.h:552 [inline]
>     [<0000000051681be3>] kzalloc include/linux/slab.h:682 [inline]
>     [<0000000051681be3>] virtio_transport_alloc_pkt+0x41/0x290 net/vmw_vsock/virtio_transport_common.c:51
>     [<0000000036c2d6e6>] virtio_transport_send_pkt_info+0x105/0x1b0 net/vmw_vsock/virtio_transport_common.c:209
>     [<00000000dd27435f>] virtio_transport_stream_enqueue+0x58/0x80 net/vmw_vsock/virtio_transport_common.c:674
>     [<00000000d7e8274a>] vsock_stream_sendmsg+0x4f7/0x590 net/vmw_vsock/af_vsock.c:1800
>     [<00000000d2b531e6>] sock_sendmsg_nosec net/socket.c:652 [inline]
>     [<00000000d2b531e6>] sock_sendmsg+0x56/0x80 net/socket.c:672
>     [<00000000803a63df>] ____sys_sendmsg+0x17a/0x390 net/socket.c:2345
>     [<000000009d42f642>] ___sys_sendmsg+0x8b/0xd0 net/socket.c:2399
>     [<000000000a37ed0e>] __sys_sendmmsg+0xed/0x290 net/socket.c:2489
>     [<00000000324c1c73>] __do_sys_sendmmsg net/socket.c:2518 [inline]
>     [<00000000324c1c73>] __se_sys_sendmmsg net/socket.c:2515 [inline]
>     [<00000000324c1c73>] __x64_sys_sendmmsg+0x24/0x30 net/socket.c:2515
>     [<000000004e7b2960>] do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46
>     [<000000002615f594>] entry_SYSCALL_64_after_hwframe+0x44/0xa9
> 
> BUG: memory leak
> unreferenced object 0xffff88811477d380 (size 96):
>   comm "syz-executor196", pid 8793, jiffies 4294968272 (age 29.040s)
>   hex dump (first 32 bytes):
>     01 00 00 00 00 00 00 00 ff ff ff ff 00 00 00 00  ................
>     ba 34 8c fe 00 00 00 00 00 00 01 00 01 00 05 00  .4..............
>   backtrace:
>     [<0000000051681be3>] kmalloc include/linux/slab.h:552 [inline]
>     [<0000000051681be3>] kzalloc include/linux/slab.h:682 [inline]
>     [<0000000051681be3>] virtio_transport_alloc_pkt+0x41/0x290 net/vmw_vsock/virtio_transport_common.c:51
>     [<0000000036c2d6e6>] virtio_transport_send_pkt_info+0x105/0x1b0 net/vmw_vsock/virtio_transport_common.c:209
>     [<00000000dd27435f>] virtio_transport_stream_enqueue+0x58/0x80 net/vmw_vsock/virtio_transport_common.c:674
>     [<00000000d7e8274a>] vsock_stream_sendmsg+0x4f7/0x590 net/vmw_vsock/af_vsock.c:1800
>     [<00000000d2b531e6>] sock_sendmsg_nosec net/socket.c:652 [inline]
>     [<00000000d2b531e6>] sock_sendmsg+0x56/0x80 net/socket.c:672
>     [<00000000803a63df>] ____sys_sendmsg+0x17a/0x390 net/socket.c:2345
>     [<000000009d42f642>] ___sys_sendmsg+0x8b/0xd0 net/socket.c:2399
>     [<000000000a37ed0e>] __sys_sendmmsg+0xed/0x290 net/socket.c:2489
>     [<00000000324c1c73>] __do_sys_sendmmsg net/socket.c:2518 [inline]
>     [<00000000324c1c73>] __se_sys_sendmmsg net/socket.c:2515 [inline]
>     [<00000000324c1c73>] __x64_sys_sendmmsg+0x24/0x30 net/socket.c:2515
>     [<000000004e7b2960>] do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46
>     [<000000002615f594>] entry_SYSCALL_64_after_hwframe+0x44/0xa9
> 
> BUG: memory leak
> unreferenced object 0xffff88811477d280 (size 96):
>   comm "syz-executor196", pid 8793, jiffies 4294968272 (age 29.040s)
>   hex dump (first 32 bytes):
>     01 00 00 00 00 00 00 00 ff ff ff ff 00 00 00 00  ................
>     ba 34 8c fe 00 00 00 00 00 00 01 00 01 00 05 00  .4..............
>   backtrace:
>     [<0000000051681be3>] kmalloc include/linux/slab.h:552 [inline]
>     [<0000000051681be3>] kzalloc include/linux/slab.h:682 [inline]
>     [<0000000051681be3>] virtio_transport_alloc_pkt+0x41/0x290 net/vmw_vsock/virtio_transport_common.c:51
>     [<0000000036c2d6e6>] virtio_transport_send_pkt_info+0x105/0x1b0 net/vmw_vsock/virtio_transport_common.c:209
>     [<00000000dd27435f>] virtio_transport_stream_enqueue+0x58/0x80 net/vmw_vsock/virtio_transport_common.c:674
>     [<00000000d7e8274a>] vsock_stream_sendmsg+0x4f7/0x590 net/vmw_vsock/af_vsock.c:1800
>     [<00000000d2b531e6>] sock_sendmsg_nosec net/socket.c:652 [inline]
>     [<00000000d2b531e6>] sock_sendmsg+0x56/0x80 net/socket.c:672
>     [<00000000803a63df>] ____sys_sendmsg+0x17a/0x390 net/socket.c:2345
>     [<000000009d42f642>] ___sys_sendmsg+0x8b/0xd0 net/socket.c:2399
>     [<000000000a37ed0e>] __sys_sendmmsg+0xed/0x290 net/socket.c:2489
>     [<00000000324c1c73>] __do_sys_sendmmsg net/socket.c:2518 [inline]
>     [<00000000324c1c73>] __se_sys_sendmmsg net/socket.c:2515 [inline]
>     [<00000000324c1c73>] __x64_sys_sendmmsg+0x24/0x30 net/socket.c:2515
>     [<000000004e7b2960>] do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46
>     [<000000002615f594>] entry_SYSCALL_64_after_hwframe+0x44/0xa9
> 
> BUG: memory leak
> unreferenced object 0xffff88811477d200 (size 96):
>   comm "syz-executor196", pid 8793, jiffies 4294968272 (age 29.040s)
>   hex dump (first 32 bytes):
>     01 00 00 00 00 00 00 00 ff ff ff ff 00 00 00 00  ................
>     ba 34 8c fe 00 00 00 00 00 00 01 00 01 00 05 00  .4..............
>   backtrace:
>     [<0000000051681be3>] kmalloc include/linux/slab.h:552 [inline]
>     [<0000000051681be3>] kzalloc include/linux/slab.h:682 [inline]
>     [<0000000051681be3>] virtio_transport_alloc_pkt+0x41/0x290 net/vmw_vsock/virtio_transport_common.c:51
>     [<0000000036c2d6e6>] virtio_transport_send_pkt_info+0x105/0x1b0 net/vmw_vsock/virtio_transport_common.c:209
>     [<00000000dd27435f>] virtio_transport_stream_enqueue+0x58/0x80 net/vmw_vsock/virtio_transport_common.c:674
>     [<00000000d7e8274a>] vsock_stream_sendmsg+0x4f7/0x590 net/vmw_vsock/af_vsock.c:1800
>     [<00000000d2b531e6>] sock_sendmsg_nosec net/socket.c:652 [inline]
>     [<00000000d2b531e6>] sock_sendmsg+0x56/0x80 net/socket.c:672
>     [<00000000803a63df>] ____sys_sendmsg+0x17a/0x390 net/socket.c:2345
>     [<000000009d42f642>] ___sys_sendmsg+0x8b/0xd0 net/socket.c:2399
>     [<000000000a37ed0e>] __sys_sendmmsg+0xed/0x290 net/socket.c:2489
>     [<00000000324c1c73>] __do_sys_sendmmsg net/socket.c:2518 [inline]
>     [<00000000324c1c73>] __se_sys_sendmmsg net/socket.c:2515 [inline]
>     [<00000000324c1c73>] __x64_sys_sendmmsg+0x24/0x30 net/socket.c:2515
>     [<000000004e7b2960>] do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46
>     [<000000002615f594>] entry_SYSCALL_64_after_hwframe+0x44/0xa9
> 
> BUG: memory leak
> unreferenced object 0xffff88811477d180 (size 96):
>   comm "syz-executor196", pid 8793, jiffies 4294968272 (age 29.040s)
>   hex dump (first 32 bytes):
>     01 00 00 00 00 00 00 00 ff ff ff ff 00 00 00 00  ................
>     ba 34 8c fe 00 00 00 00 00 00 01 00 01 00 05 00  .4..............
>   backtrace:
>     [<0000000051681be3>] kmalloc include/linux/slab.h:552 [inline]
>     [<0000000051681be3>] kzalloc include/linux/slab.h:682 [inline]
>     [<0000000051681be3>] virtio_transport_alloc_pkt+0x41/0x290 net/vmw_vsock/virtio_transport_common.c:51
>     [<0000000036c2d6e6>] virtio_transport_send_pkt_info+0x105/0x1b0 net/vmw_vsock/virtio_transport_common.c:209
>     [<00000000dd27435f>] virtio_transport_stream_enqueue+0x58/0x80 net/vmw_vsock/virtio_transport_common.c:674
>     [<00000000d7e8274a>] vsock_stream_sendmsg+0x4f7/0x590 net/vmw_vsock/af_vsock.c:1800
>     [<00000000d2b531e6>] sock_sendmsg_nosec net/socket.c:652 [inline]
>     [<00000000d2b531e6>] sock_sendmsg+0x56/0x80 net/socket.c:672
>     [<00000000803a63df>] ____sys_sendmsg+0x17a/0x390 net/socket.c:2345
>     [<000000009d42f642>] ___sys_sendmsg+0x8b/0xd0 net/socket.c:2399
>     [<000000000a37ed0e>] __sys_sendmmsg+0xed/0x290 net/socket.c:2489
>     [<00000000324c1c73>] __do_sys_sendmmsg net/socket.c:2518 [inline]
>     [<00000000324c1c73>] __se_sys_sendmmsg net/socket.c:2515 [inline]
>     [<00000000324c1c73>] __x64_sys_sendmmsg+0x24/0x30 net/socket.c:2515
>     [<000000004e7b2960>] do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46
>     [<000000002615f594>] entry_SYSCALL_64_after_hwframe+0x44/0xa9
> 
> BUG: memory leak
> unreferenced object 0xffff88811477d380 (size 96):
>   comm "syz-executor196", pid 8793, jiffies 4294968272 (age 29.100s)
>   hex dump (first 32 bytes):
>     01 00 00 00 00 00 00 00 ff ff ff ff 00 00 00 00  ................
>     ba 34 8c fe 00 00 00 00 00 00 01 00 01 00 05 00  .4..............
>   backtrace:
>     [<0000000051681be3>] kmalloc include/linux/slab.h:552 [inline]
>     [<0000000051681be3>] kzalloc include/linux/slab.h:682 [inline]
>     [<0000000051681be3>] virtio_transport_alloc_pkt+0x41/0x290 net/vmw_vsock/virtio_transport_common.c:51
>     [<0000000036c2d6e6>] virtio_transport_send_pkt_info+0x105/0x1b0 net/vmw_vsock/virtio_transport_common.c:209
>     [<00000000dd27435f>] virtio_transport_stream_enqueue+0x58/0x80 net/vmw_vsock/virtio_transport_common.c:674
>     [<00000000d7e8274a>] vsock_stream_sendmsg+0x4f7/0x590 net/vmw_vsock/af_vsock.c:1800
>     [<00000000d2b531e6>] sock_sendmsg_nosec net/socket.c:652 [inline]
>     [<00000000d2b531e6>] sock_sendmsg+0x56/0x80 net/socket.c:672
>     [<00000000803a63df>] ____sys_sendmsg+0x17a/0x390 net/socket.c:2345
>     [<000000009d42f642>] ___sys_sendmsg+0x8b/0xd0 net/socket.c:2399
>     [<000000000a37ed0e>] __sys_sendmmsg+0xed/0x290 net/socket.c:2489
>     [<00000000324c1c73>] __do_sys_sendmmsg net/socket.c:2518 [inline]
>     [<00000000324c1c73>] __se_sys_sendmmsg net/socket.c:2515 [inline]
>     [<00000000324c1c73>] __x64_sys_sendmmsg+0x24/0x30 net/socket.c:2515
>     [<000000004e7b2960>] do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46
>     [<000000002615f594>] entry_SYSCALL_64_after_hwframe+0x44/0xa9
> 
> BUG: memory leak
> unreferenced object 0xffff88811477d280 (size 96):
>   comm "syz-executor196", pid 8793, jiffies 4294968272 (age 29.100s)
>   hex dump (first 32 bytes):
>     01 00 00 00 00 00 00 00 ff ff ff ff 00 00 00 00  ................
>     ba 34 8c fe 00 00 00 00 00 00 01 00 01 00 05 00  .4..............
>   backtrace:
>     [<0000000051681be3>] kmalloc include/linux/slab.h:552 [inline]
>     [<0000000051681be3>] kzalloc include/linux/slab.h:682 [inline]
>     [<0000000051681be3>] virtio_transport_alloc_pkt+0x41/0x290 net/vmw_vsock/virtio_transport_common.c:51
>     [<0000000036c2d6e6>] virtio_transport_send_pkt_info+0x105/0x1b0 net/vmw_vsock/virtio_transport_common.c:209
>     [<00000000dd27435f>] virtio_transport_stream_enqueue+0x58/0x80 net/vmw_vsock/virtio_transport_common.c:674
>     [<00000000d7e8274a>] vsock_stream_sendmsg+0x4f7/0x590 net/vmw_vsock/af_vsock.c:1800
>     [<00000000d2b531e6>] sock_sendmsg_nosec net/socket.c:652 [inline]
>     [<00000000d2b531e6>] sock_sendmsg+0x56/0x80 net/socket.c:672
>     [<00000000803a63df>] ____sys_sendmsg+0x17a/0x390 net/socket.c:2345
>     [<000000009d42f642>] ___sys_sendmsg+0x8b/0xd0 net/socket.c:2399
>     [<000000000a37ed0e>] __sys_sendmmsg+0xed/0x290 net/socket.c:2489
>     [<00000000324c1c73>] __do_sys_sendmmsg net/socket.c:2518 [inline]
>     [<00000000324c1c73>] __se_sys_sendmmsg net/socket.c:2515 [inline]
>     [<00000000324c1c73>] __x64_sys_sendmmsg+0x24/0x30 net/socket.c:2515
>     [<000000004e7b2960>] do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46
>     [<000000002615f594>] entry_SYSCALL_64_after_hwframe+0x44/0xa9
> 
> BUG: memory leak
> unreferenced object 0xffff88811477d200 (size 96):
>   comm "syz-executor196", pid 8793, jiffies 4294968272 (age 29.100s)
>   hex dump (first 32 bytes):
>     01 00 00 00 00 00 00 00 ff ff ff ff 00 00 00 00  ................
>     ba 34 8c fe 00 00 00 00 00 00 01 00 01 00 05 00  .4..............
>   backtrace:
>     [<0000000051681be3>] kmalloc include/linux/slab.h:552 [inline]
>     [<0000000051681be3>] kzalloc include/linux/slab.h:682 [inline]
>     [<0000000051681be3>] virtio_transport_alloc_pkt+0x41/0x290 net/vmw_vsock/virtio_transport_common.c:51
>     [<0000000036c2d6e6>] virtio_transport_send_pkt_info+0x105/0x1b0 net/vmw_vsock/virtio_transport_common.c:209
>     [<00000000dd27435f>] virtio_transport_stream_enqueue+0x58/0x80 net/vmw_vsock/virtio_transport_common.c:674
>     [<00000000d7e8274a>] vsock_stream_sendmsg+0x4f7/0x590 net/vmw_vsock/af_vsock.c:1800
>     [<00000000d2b531e6>] sock_sendmsg_nosec net/socket.c:652 [inline]
>     [<00000000d2b531e6>] sock_sendmsg+0x56/0x80 net/socket.c:672
>     [<00000000803a63df>] ____sys_sendmsg+0x17a/0x390 net/socket.c:2345
>     [<000000009d42f642>] ___sys_sendmsg+0x8b/0xd0 net/socket.c:2399
>     [<000000000a37ed0e>] __sys_sendmmsg+0xed/0x290 net/socket.c:2489
>     [<00000000324c1c73>] __do_sys_sendmmsg net/socket.c:2518 [inline]
>     [<00000000324c1c73>] __se_sys_sendmmsg net/socket.c:2515 [inline]
>     [<00000000324c1c73>] __x64_sys_sendmmsg+0x24/0x30 net/socket.c:2515
>     [<000000004e7b2960>] do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46
>     [<000000002615f594>] entry_SYSCALL_64_after_hwframe+0x44/0xa9
> 
> BUG: memory leak
> unreferenced object 0xffff88811477d180 (size 96):
>   comm "syz-executor196", pid 8793, jiffies 4294968272 (age 29.100s)
>   hex dump (first 32 bytes):
>     01 00 00 00 00 00 00 00 ff ff ff ff 00 00 00 00  ................
>     ba 34 8c fe 00 00 00 00 00 00 01 00 01 00 05 00  .4..............
>   backtrace:
>     [<0000000051681be3>] kmalloc include/linux/slab.h:552 [inline]
>     [<0000000051681be3>] kzalloc include/linux/slab.h:682 [inline]
>     [<0000000051681be3>] virtio_transport_alloc_pkt+0x41/0x290 net/vmw_vsock/virtio_transport_common.c:51
>     [<0000000036c2d6e6>] virtio_transport_send_pkt_info+0x105/0x1b0 net/vmw_vsock/virtio_transport_common.c:209
>     [<00000000dd27435f>] virtio_transport_stream_enqueue+0x58/0x80 net/vmw_vsock/virtio_transport_common.c:674
>     [<00000000d7e8274a>] vsock_stream_sendmsg+0x4f7/0x590 net/vmw_vsock/af_vsock.c:1800
>     [<00000000d2b531e6>] sock_sendmsg_nosec net/socket.c:652 [inline]
>     [<00000000d2b531e6>] sock_sendmsg+0x56/0x80 net/socket.c:672
>     [<00000000803a63df>] ____sys_sendmsg+0x17a/0x390 net/socket.c:2345
>     [<000000009d42f642>] ___sys_sendmsg+0x8b/0xd0 net/socket.c:2399
>     [<000000000a37ed0e>] __sys_sendmmsg+0xed/0x290 net/socket.c:2489
>     [<00000000324c1c73>] __do_sys_sendmmsg net/socket.c:2518 [inline]
>     [<00000000324c1c73>] __se_sys_sendmmsg net/socket.c:2515 [inline]
>     [<00000000324c1c73>] __x64_sys_sendmmsg+0x24/0x30 net/socket.c:2515
>     [<000000004e7b2960>] do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46
>     [<000000002615f594>] entry_SYSCALL_64_after_hwframe+0x44/0xa9
> 
> BUG: memory leak
> unreferenced object 0xffff88811477d380 (size 96):
>   comm "syz-executor196", pid 8793, jiffies 4294968272 (age 29.160s)
>   hex dump (first 32 bytes):
>     01 00 00 00 00 00 00 00 ff ff ff ff 00 00 00 00  ................
>     ba 34 8c fe 00 00 00 00 00 00 01 00 01 00 05 00  .4..............
>   backtrace:
>     [<0000000051681be3>] kmalloc include/linux/slab.h:552 [inline]
>     [<0000000051681be3>] kzalloc include/linux/slab.h:682 [inline]
>     [<0000000051681be3>] virtio_transport_alloc_pkt+0x41/0x290 net/vmw_vsock/virtio_transport_common.c:51
>     [<0000000036c2d6e6>] virtio_transport_send_pkt_info+0x105/0x1b0 net/vmw_vsock/virtio_transport_common.c:209
>     [<00000000dd27435f>] virtio_transport_stream_enqueue+0x58/0x80 net/vmw_vsock/virtio_transport_common.c:674
>     [<00000000d7e8274a>] vsock_stream_sendmsg+0x4f7/0x590 net/vmw_vsock/af_vsock.c:1800
>     [<00000000d2b531e6>] sock_sendmsg_nosec net/socket.c:652 [inline]
>     [<00000000d2b531e6>] sock_sendmsg+0x56/0x80 net/socket.c:672
>     [<00000000803a63df>] ____sys_sendmsg+0x17a/0x390 net/socket.c:2345
>     [<000000009d42f642>] ___sys_sendmsg+0x8b/0xd0 net/socket.c:2399
>     [<000000000a37ed0e>] __sys_sendmmsg+0xed/0x290 net/socket.c:2489
>     [<00000000324c1c73>] __do_sys_sendmmsg net/socket.c:2518 [inline]
>     [<00000000324c1c73>] __se_sys_sendmmsg net/socket.c:2515 [inline]
>     [<00000000324c1c73>] __x64_sys_sendmmsg+0x24/0x30 net/socket.c:2515
>     [<000000004e7b2960>] do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46
>     [<000000002615f594>] entry_SYSCALL_64_after_hwframe+0x44/0xa9
> 
> BUG: memory leak
> unreferenced object 0xffff88811477d280 (size 96):
>   comm "syz-executor196", pid 8793, jiffies 4294968272 (age 29.160s)
>   hex dump (first 32 bytes):
>     01 00 00 00 00 00 00 00 ff ff ff ff 00 00 00 00  ................
>     ba 34 8c fe 00 00 00 00 00 00 01 00 01 00 05 00  .4..............
>   backtrace:
>     [<0000000051681be3>] kmalloc include/linux/slab.h:552 [inline]
>     [<0000000051681be3>] kzalloc include/linux/slab.h:682 [inline]
>     [<0000000051681be3>] virtio_transport_alloc_pkt+0x41/0x290 net/vmw_vsock/virtio_transport_common.c:51
>     [<0000000036c2d6e6>] virtio_transport_send_pkt_info+0x105/0x1b0 net/vmw_vsock/virtio_transport_common.c:209
>     [<00000000dd27435f>] virtio_transport_stream_enqueue+0x58/0x80 net/vmw_vsock/virtio_transport_common.c:674
>     [<00000000d7e8274a>] vsock_stream_sendmsg+0x4f7/0x590 net/vmw_vsock/af_vsock.c:1800
>     [<00000000d2b531e6>] sock_sendmsg_nosec net/socket.c:652 [inline]
>     [<00000000d2b531e6>] sock_sendmsg+0x56/0x80 net/socket.c:672
>     [<00000000803a63df>] ____sys_sendmsg+0x17a/0x390 net/socket.c:2345
>     [<000000009d42f642>] ___sys_sendmsg+0x8b/0xd0 net/socket.c:2399
>     [<000000000a37ed0e>] __sys_sendmmsg+0xed/0x290 net/socket.c:2489
>     [<00000000324c1c73>] __do_sys_sendmmsg net/socket.c:2518 [inline]
>     [<00000000324c1c73>] __se_sys_sendmmsg net/socket.c:2515 [inline]
>     [<00000000324c1c73>] __x64_sys_sendmmsg+0x24/0x30 net/socket.c:2515
>     [<000000004e7b2960>] do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46
>     [<000000002615f594>] entry_SYSCALL_64_after_hwframe+0x44/0xa9
> 
> BUG: memory leak
> unreferenced object 0xffff88811477d200 (size 96):
>   comm "syz-executor196", pid 8793, jiffies 4294968272 (age 29.160s)
>   hex dump (first 32 bytes):
>     01 00 00 00 00 00 00 00 ff ff ff ff 00 00 00 00  ................
>     ba 34 8c fe 00 00 00 00 00 00 01 00 01 00 05 00  .4..............
>   backtrace:
>     [<0000000051681be3>] kmalloc include/linux/slab.h:552 [inline]
>     [<0000000051681be3>] kzalloc include/linux/slab.h:682 [inline]
>     [<0000000051681be3>] virtio_transport_alloc_pkt+0x41/0x290 net/vmw_vsock/virtio_transport_common.c:51
>     [<0000000036c2d6e6>] virtio_transport_send_pkt_info+0x105/0x1b0 net/vmw_vsock/virtio_transport_common.c:209
>     [<00000000dd27435f>] virtio_transport_stream_enqueue+0x58/0x80 net/vmw_vsock/virtio_transport_common.c:674
>     [<00000000d7e8274a>] vsock_stream_sendmsg+0x4f7/0x590 net/vmw_vsock/af_vsock.c:1800
>     [<00000000d2b531e6>] sock_sendmsg_nosec net/socket.c:652 [inline]
>     [<00000000d2b531e6>] sock_sendmsg+0x56/0x80 net/socket.c:672
>     [<00000000803a63df>] ____sys_sendmsg+0x17a/0x390 net/socket.c:2345
>     [<000000009d42f642>] ___sys_sendmsg+0x8b/0xd0 net/socket.c:2399
>     [<000000000a37ed0e>] __sys_sendmmsg+0xed/0x290 net/socket.c:2489
>     [<00000000324c1c73>] __do_sys_sendmmsg net/socket.c:2518 [inline]
>     [<00000000324c1c73>] __se_sys_sendmmsg net/socket.c:2515 [inline]
>     [<00000000324c1c73>] __x64_sys_sendmmsg+0x24/0x30 net/socket.c:2515
>     [<000000004e7b2960>] do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46
>     [<000000002615f594>] entry_SYSCALL_64_after_hwframe+0x44/0xa9
> 
> BUG: memory leak
> unreferenced object 0xffff88811477d180 (size 96):
>   comm "syz-executor196", pid 8793, jiffies 4294968272 (age 29.160s)
>   hex dump (first 32 bytes):
>     01 00 00 00 00 00 00 00 ff ff ff ff 00 00 00 00  ................
>     ba 34 8c fe 00 00 00 00 00 00 01 00 01 00 05 00  .4..............
>   backtrace:
>     [<0000000051681be3>] kmalloc include/linux/slab.h:552 [inline]
>     [<0000000051681be3>] kzalloc include/linux/slab.h:682 [inline]
>     [<0000000051681be3>] virtio_transport_alloc_pkt+0x41/0x290 net/vmw_vsock/virtio_transport_common.c:51
>     [<0000000036c2d6e6>] virtio_transport_send_pkt_info+0x105/0x1b0 net/vmw_vsock/virtio_transport_common.c:209
>     [<00000000dd27435f>] virtio_transport_stream_enqueue+0x58/0x80 net/vmw_vsock/virtio_transport_common.c:674
>     [<00000000d7e8274a>] vsock_stream_sendmsg+0x4f7/0x590 net/vmw_vsock/af_vsock.c:1800
>     [<00000000d2b531e6>] sock_sendmsg_nosec net/socket.c:652 [inline]
>     [<00000000d2b531e6>] sock_sendmsg+0x56/0x80 net/socket.c:672
>     [<00000000803a63df>] ____sys_sendmsg+0x17a/0x390 net/socket.c:2345
>     [<000000009d42f642>] ___sys_sendmsg+0x8b/0xd0 net/socket.c:2399
>     [<000000000a37ed0e>] __sys_sendmmsg+0xed/0x290 net/socket.c:2489
>     [<00000000324c1c73>] __do_sys_sendmmsg net/socket.c:2518 [inline]
>     [<00000000324c1c73>] __se_sys_sendmmsg net/socket.c:2515 [inline]
>     [<00000000324c1c73>] __x64_sys_sendmmsg+0x24/0x30 net/socket.c:2515
>     [<000000004e7b2960>] do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46
>     [<000000002615f594>] entry_SYSCALL_64_after_hwframe+0x44/0xa9
> 
> BUG: memory leak
> unreferenced object 0xffff88811477d380 (size 96):
>   comm "syz-executor196", pid 8793, jiffies 4294968272 (age 29.230s)
>   hex dump (first 32 bytes):
>     01 00 00 00 00 00 00 00 ff ff ff ff 00 00 00 00  ................
>     ba 34 8c fe 00 00 00 00 00 00 01 00 01 00 05 00  .4..............
>   backtrace:
>     [<0000000051681be3>] kmalloc include/linux/slab.h:552 [inline]
>     [<0000000051681be3>] kzalloc include/linux/slab.h:682 [inline]
>     [<0000000051681be3>] virtio_transport_alloc_pkt+0x41/0x290 net/vmw_vsock/virtio_transport_common.c:51
>     [<0000000036c2d6e6>] virtio_transport_send_pkt_info+0x105/0x1b0 net/vmw_vsock/virtio_transport_common.c:209
>     [<00000000dd27435f>] virtio_transport_stream_enqueue+0x58/0x80 net/vmw_vsock/virtio_transport_common.c:674
>     [<00000000d7e8274a>] vsock_stream_sendmsg+0x4f7/0x590 net/vmw_vsock/af_vsock.c:1800
>     [<00000000d2b531e6>] sock_sendmsg_nosec net/socket.c:652 [inline]
>     [<00000000d2b531e6>] sock_sendmsg+0x56/0x80 net/socket.c:672
>     [<00000000803a63df>] ____sys_sendmsg+0x17a/0x390 net/socket.c:2345
>     [<000000009d42f642>] ___sys_sendmsg+0x8b/0xd0 net/socket.c:2399
>     [<000000000a37ed0e>] __sys_sendmmsg+0xed/0x290 net/socket.c:2489
>     [<00000000324c1c73>] __do_sys_sendmmsg net/socket.c:2518 [inline]
>     [<00000000324c1c73>] __se_sys_sendmmsg net/socket.c:2515 [inline]
>     [<00000000324c1c73>] __x64_sys_sendmmsg+0x24/0x30 net/socket.c:2515
>     [<000000004e7b2960>] do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46
>     [<000000002615f594>] entry_SYSCALL_64_after_hwframe+0x44/0xa9
> 
> BUG: memory leak
> unreferenced object 0xffff88811477d280 (size 96):
>   comm "syz-executor196", pid 8793, jiffies 4294968272 (age 29.230s)
>   hex dump (first 32 bytes):
>     01 00 00 00 00 00 00 00 ff ff ff ff 00 00 00 00  ................
>     ba 34 8c fe 00 00 00 00 00 00 01 00 01 00 05 00  .4..............
>   backtrace:
>     [<0000000051681be3>] kmalloc include/linux/slab.h:552 [inline]
>     [<0000000051681be3>] kzalloc include/linux/slab.h:682 [inline]
>     [<0000000051681be3>] virtio_transport_alloc_pkt+0x41/0x290 net/vmw_vsock/virtio_transport_common.c:51
>     [<0000000036c2d6e6>] virtio_transport_send_pkt_info+0x105/0x1b0 net/vmw_vsock/virtio_transport_common.c:209
>     [<00000000dd27435f>] virtio_transport_stream_enqueue+0x58/0x80 net/vmw_vsock/virtio_transport_common.c:674
>     [<00000000d7e8274a>] vsock_stream_sendmsg+0x4f7/0x590 net/vmw_vsock/af_vsock.c:1800
>     [<00000000d2b531e6>] sock_sendmsg_nosec net/socket.c:652 [inline]
>     [<00000000d2b531e6>] sock_sendmsg+0x56/0x80 net/socket.c:672
>     [<00000000803a63df>] ____sys_sendmsg+0x17a/0x390 net/socket.c:2345
>     [<000000009d42f642>] ___sys_sendmsg+0x8b/0xd0 net/socket.c:2399
>     [<000000000a37ed0e>] __sys_sendmmsg+0xed/0x290 net/socket.c:2489
>     [<00000000324c1c73>] __do_sys_sendmmsg net/socket.c:2518 [inline]
>     [<00000000324c1c73>] __se_sys_sendmmsg net/socket.c:2515 [inline]
>     [<00000000324c1c73>] __x64_sys_sendmmsg+0x24/0x30 net/socket.c:2515
>     [<000000004e7b2960>] do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46
>     [<000000002615f594>] entry_SYSCALL_64_after_hwframe+0x44/0xa9
> 
> BUG: memory leak
> unreferenced object 0xffff88811477d200 (size 96):
>   comm "syz-executor196", pid 8793, jiffies 4294968272 (age 29.230s)
>   hex dump (first 32 bytes):
>     01 00 00 00 00 00 00 00 ff ff ff ff 00 00 00 00  ................
>     ba 34 8c fe 00 00 00 00 00 00 01 00 01 00 05 00  .4..............
>   backtrace:
>     [<0000000051681be3>] kmalloc include/linux/slab.h:552 [inline]
>     [<0000000051681be3>] kzalloc include/linux/slab.h:682 [inline]
>     [<0000000051681be3>] virtio_transport_alloc_pkt+0x41/0x290 net/vmw_vsock/virtio_transport_common.c:51
>     [<0000000036c2d6e6>] virtio_transport_send_pkt_info+0x105/0x1b0 net/vmw_vsock/virtio_transport_common.c:209
>     [<00000000dd27435f>] virtio_transport_stream_enqueue+0x58/0x80 net/vmw_vsock/virtio_transport_common.c:674
>     [<00000000d7e8274a>] vsock_stream_sendmsg+0x4f7/0x590 net/vmw_vsock/af_vsock.c:1800
>     [<00000000d2b531e6>] sock_sendmsg_nosec net/socket.c:652 [inline]
>     [<00000000d2b531e6>] sock_sendmsg+0x56/0x80 net/socket.c:672
>     [<00000000803a63df>] ____sys_sendmsg+0x17a/0x390 net/socket.c:2345
>     [<000000009d42f642>] ___sys_sendmsg+0x8b/0xd0 net/socket.c:2399
>     [<000000000a37ed0e>] __sys_sendmmsg+0xed/0x290 net/socket.c:2489
>     [<00000000324c1c73>] __do_sys_sendmmsg net/socket.c:2518 [inline]
>     [<00000000324c1c73>] __se_sys_sendmmsg net/socket.c:2515 [inline]
>     [<00000000324c1c73>] __x64_sys_sendmmsg+0x24/0x30 net/socket.c:2515
>     [<000000004e7b2960>] do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46
>     [<000000002615f594>] entry_SYSCALL_64_after_hwframe+0x44/0xa9
> 
> BUG: memory leak
> unreferenced object 0xffff88811477d180 (size 96):
>   comm "syz-executor196", pid 8793, jiffies 4294968272 (age 29.230s)
>   hex dump (first 32 bytes):
>     01 00 00 00 00 00 00 00 ff ff ff ff 00 00 00 00  ................
>     ba 34 8c fe 00 00 00 00 00 00 01 00 01 00 05 00  .4..............
>   backtrace:
>     [<0000000051681be3>] kmalloc include/linux/slab.h:552 [inline]
>     [<0000000051681be3>] kzalloc include/linux/slab.h:682 [inline]
>     [<0000000051681be3>] virtio_transport_alloc_pkt+0x41/0x290 net/vmw_vsock/virtio_transport_common.c:51
>     [<0000000036c2d6e6>] virtio_transport_send_pkt_info+0x105/0x1b0 net/vmw_vsock/virtio_transport_common.c:209
>     [<00000000dd27435f>] virtio_transport_stream_enqueue+0x58/0x80 net/vmw_vsock/virtio_transport_common.c:674
>     [<00000000d7e8274a>] vsock_stream_sendmsg+0x4f7/0x590 net/vmw_vsock/af_vsock.c:1800
>     [<00000000d2b531e6>] sock_sendmsg_nosec net/socket.c:652 [inline]
>     [<00000000d2b531e6>] sock_sendmsg+0x56/0x80 net/socket.c:672
>     [<00000000803a63df>] ____sys_sendmsg+0x17a/0x390 net/socket.c:2345
>     [<000000009d42f642>] ___sys_sendmsg+0x8b/0xd0 net/socket.c:2399
>     [<000000000a37ed0e>] __sys_sendmmsg+0xed/0x290 net/socket.c:2489
>     [<00000000324c1c73>] __do_sys_sendmmsg net/socket.c:2518 [inline]
>     [<00000000324c1c73>] __se_sys_sendmmsg net/socket.c:2515 [inline]
>     [<00000000324c1c73>] __x64_sys_sendmmsg+0x24/0x30 net/socket.c:2515
>     [<000000004e7b2960>] do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46
>     [<000000002615f594>] entry_SYSCALL_64_after_hwframe+0x44/0xa9
> 
> BUG: memory leak
> unreferenced object 0xffff88811477d380 (size 96):
>   comm "syz-executor196", pid 8793, jiffies 4294968272 (age 29.290s)
>   hex dump (first 32 bytes):
>     01 00 00 00 00 00 00 00 ff ff ff ff 00 00 00 00  ................
>     ba 34 8c fe 00 00 00 00 00 00 01 00 01 00 05 00  .4..............
>   backtrace:
>     [<0000000051681be3>] kmalloc include/linux/slab.h:552 [inline]
>     [<0000000051681be3>] kzalloc include/linux/slab.h:682 [inline]
>     [<0000000051681be3>] virtio_transport_alloc_pkt+0x41/0x290 net/vmw_vsock/virtio_transport_common.c:51
>     [<0000000036c2d6e6>] virtio_transport_send_pkt_info+0x105/0x1b0 net/vmw_vsock/virtio_transport_common.c:209
>     [<00000000dd27435f>] virtio_transport_stream_enqueue+0x58/0x80 net/vmw_vsock/virtio_transport_common.c:674
>     [<00000000d7e8274a>] vsock_stream_sendmsg+0x4f7/0x590 net/vmw_vsock/af_vsock.c:1800
>     [<00000000d2b531e6>] sock_sendmsg_nosec net/socket.c:652 [inline]
>     [<00000000d2b531e6>] sock_sendmsg+0x56/0x80 net/socket.c:672
>     [<00000000803a63df>] ____sys_sendmsg+0x17a/0x390 net/socket.c:2345
>     [<000000009d42f642>] ___sys_sendmsg+0x8b/0xd0 net/socket.c:2399
>     [<000000000a37ed0e>] __sys_sendmmsg+0xed/0x290 net/socket.c:2489
>     [<00000000324c1c73>] __do_sys_sendmmsg net/socket.c:2518 [inline]
>     [<00000000324c1c73>] __se_sys_sendmmsg net/socket.c:2515 [inline]
>     [<00000000324c1c73>] __x64_sys_sendmmsg+0x24/0x30 net/socket.c:2515
>     [<000000004e7b2960>] do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46
>     [<000000002615f594>] entry_SYSCALL_64_after_hwframe+0x44/0xa9
> 
> BUG: memory leak
> unreferenced object 0xffff88811477d280 (size 96):
>   comm "syz-executor196", pid 8793, jiffies 4294968272 (age 29.290s)
>   hex dump (first 32 bytes):
>     01 00 00 00 00 00 00 00 ff ff ff ff 00 00 00 00  ................
>     ba 34 8c fe 00 00 00 00 00 00 01 00 01 00 05 00  .4..............
>   backtrace:
>     [<0000000051681be3>] kmalloc include/linux/slab.h:552 [inline]
>     [<0000000051681be3>] kzalloc include/linux/slab.h:682 [inline]
>     [<0000000051681be3>] virtio_transport_alloc_pkt+0x41/0x290 net/vmw_vsock/virtio_transport_common.c:51
>     [<0000000036c2d6e6>] virtio_transport_send_pkt_info+0x105/0x1b0 net/vmw_vsock/virtio_transport_common.c:209
>     [<00000000dd27435f>] virtio_transport_stream_enqueue+0x58/0x80 net/vmw_vsock/virtio_transport_common.c:674
>     [<00000000d7e8274a>] vsock_stream_sendmsg+0x4f7/0x590 net/vmw_vsock/af_vsock.c:1800
>     [<00000000d2b531e6>] sock_sendmsg_nosec net/socket.c:652 [inline]
>     [<00000000d2b531e6>] sock_sendmsg+0x56/0x80 net/socket.c:672
>     [<00000000803a63df>] ____sys_sendmsg+0x17a/0x390 net/socket.c:2345
>     [<000000009d42f642>] ___sys_sendmsg+0x8b/0xd0 net/socket.c:2399
>     [<000000000a37ed0e>] __sys_sendmmsg+0xed/0x290 net/socket.c:2489
>     [<00000000324c1c73>] __do_sys_sendmmsg net/socket.c:2518 [inline]
>     [<00000000324c1c73>] __se_sys_sendmmsg net/socket.c:2515 [inline]
>     [<00000000324c1c73>] __x64_sys_sendmmsg+0x24/0x30 net/socket.c:2515
>     [<000000004e7b2960>] do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46
>     [<000000002615f594>] entry_SYSCALL_64_after_hwframe+0x44/0xa9
> 
> BUG: memory leak
> unreferenced object 0xffff88811477d200 (size 96):
>   comm "syz-executor196", pid 8793, jiffies 4294968272 (age 29.290s)
>   hex dump (first 32 bytes):
>     01 00 00 00 00 00 00 00 ff ff ff ff 00 00 00 00  ................
>     ba 34 8c fe 00 00 00 00 00 00 01 00 01 00 05 00  .4..............
>   backtrace:
>     [<0000000051681be3>] kmalloc include/linux/slab.h:552 [inline]
>     [<0000000051681be3>] kzalloc include/linux/slab.h:682 [inline]
>     [<0000000051681be3>] virtio_transport_alloc_pkt+0x41/0x290 net/vmw_vsock/virtio_transport_common.c:51
>     [<0000000036c2d6e6>] virtio_transport_send_pkt_info+0x105/0x1b0 net/vmw_vsock/virtio_transport_common.c:209
>     [<00000000dd27435f>] virtio_transport_stream_enqueue+0x58/0x80 net/vmw_vsock/virtio_transport_common.c:674
>     [<00000000d7e8274a>] vsock_stream_sendmsg+0x4f7/0x590 net/vmw_vsock/af_vsock.c:1800
>     [<00000000d2b531e6>] sock_sendmsg_nosec net/socket.c:652 [inline]
>     [<00000000d2b531e6>] sock_sendmsg+0x56/0x80 net/socket.c:672
>     [<00000000803a63df>] ____sys_sendmsg+0x17a/0x390 net/socket.c:2345
>     [<000000009d42f642>] ___sys_sendmsg+0x8b/0xd0 net/socket.c:2399
>     [<000000000a37ed0e>] __sys_sendmmsg+0xed/0x290 net/socket.c:2489
>     [<00000000324c1c73>] __do_sys_sendmmsg net/socket.c:2518 [inline]
>     [<00000000324c1c73>] __se_sys_sendmmsg net/socket.c:2515 [inline]
>     [<00000000324c1c73>] __x64_sys_sendmmsg+0x24/0x30 net/socket.c:2515
>     [<000000004e7b2960>] do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46
>     [<000000002615f594>] entry_SYSCALL_64_after_hwframe+0x44/0xa9
> 
> BUG: memory leak
> unreferenced object 0xffff88811477d180 (size 96):
>   comm "syz-executor196", pid 8793, jiffies 4294968272 (age 29.290s)
>   hex dump (first 32 bytes):
>     01 00 00 00 00 00 00 00 ff ff ff ff 00 00 00 00  ................
>     ba 34 8c fe 00 00 00 00 00 00 01 00 01 00 05 00  .4..............
>   backtrace:
>     [<0000000051681be3>] kmalloc include/linux/slab.h:552 [inline]
>     [<0000000051681be3>] kzalloc include/linux/slab.h:682 [inline]
>     [<0000000051681be3>] virtio_transport_alloc_pkt+0x41/0x290 net/vmw_vsock/virtio_transport_common.c:51
>     [<0000000036c2d6e6>] virtio_transport_send_pkt_info+0x105/0x1b0 net/vmw_vsock/virtio_transport_common.c:209
>     [<00000000dd27435f>] virtio_transport_stream_enqueue+0x58/0x80 net/vmw_vsock/virtio_transport_common.c:674
>     [<00000000d7e8274a>] vsock_stream_sendmsg+0x4f7/0x590 net/vmw_vsock/af_vsock.c:1800
>     [<00000000d2b531e6>] sock_sendmsg_nosec net/socket.c:652 [inline]
>     [<00000000d2b531e6>] sock_sendmsg+0x56/0x80 net/socket.c:672
>     [<00000000803a63df>] ____sys_sendmsg+0x17a/0x390 net/socket.c:2345
>     [<000000009d42f642>] ___sys_sendmsg+0x8b/0xd0 net/socket.c:2399
>     [<000000000a37ed0e>] __sys_sendmmsg+0xed/0x290 net/socket.c:2489
>     [<00000000324c1c73>] __do_sys_sendmmsg net/socket.c:2518 [inline]
>     [<00000000324c1c73>] __se_sys_sendmmsg net/socket.c:2515 [inline]
>     [<00000000324c1c73>] __x64_sys_sendmmsg+0x24/0x30 net/socket.c:2515
>     [<000000004e7b2960>] do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46
>     [<000000002615f594>] entry_SYSCALL_64_after_hwframe+0x44/0xa9
> 
> executing program
> executing program
> 
> 
> ---
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> syzbot engineers can be reached at syzkaller@...glegroups.com.
> 
> syzbot will keep track of this issue. See:
> https://goo.gl/tpsmEJ#status for how to communicate with syzbot.
> syzbot can test patches for this issue, for details see:
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> 

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