linux-kernel - Re: memory leak in virtio_transport_send_pkt

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Message-ID: <20210331105031.ewh4cq2xfe3pcn2v@steredhat>
Date:   Wed, 31 Mar 2021 12:50:31 +0200
From:   Stefano Garzarella <sgarzare@...hat.com>
To:     Stefan Hajnoczi <stefanha@...hat.com>
Cc:     davem@...emloft.net, kuba@...nel.org, kvm@...r.kernel.org,
        linux-kernel@...r.kernel.org, netdev@...r.kernel.org,
        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 Wed, Mar 31, 2021 at 10:04:18AM +0100, Stefan Hajnoczi wrote:
>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?

I missed this report.
Looking at the reproducer it seems to happen when we send a message to a 
socket not yet accept()ed.

I'll take a closer look over the next few days, thanks for bringing it 
up.

Stefano

>
>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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>>