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fbf7085b3a
linux-next/net/vmw_vsock
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Michal Luczaj fbf7085b3a vsock: Fix sk_error_queue memory leak 
Kernel queues MSG_ZEROCOPY completion notifications on the error queue.
Where they remain, until explicitly recv()ed. To prevent memory leaks,
clean up the queue when the socket is destroyed.

unreferenced object 0xffff8881028beb00 (size 224):
  comm "vsock_test", pid 1218, jiffies 4294694897
  hex dump (first 32 bytes):
    90 b0 21 17 81 88 ff ff 90 b0 21 17 81 88 ff ff  ..!.......!.....
    00 00 00 00 00 00 00 00 00 b0 21 17 81 88 ff ff  ..........!.....
  backtrace (crc 6c7031ca):
    [<ffffffff81418ef7>] kmem_cache_alloc_node_noprof+0x2f7/0x370
    [<ffffffff81d35882>] __alloc_skb+0x132/0x180
    [<ffffffff81d2d32b>] sock_omalloc+0x4b/0x80
    [<ffffffff81d3a8ae>] msg_zerocopy_realloc+0x9e/0x240
    [<ffffffff81fe5cb2>] virtio_transport_send_pkt_info+0x412/0x4c0
    [<ffffffff81fe6183>] virtio_transport_stream_enqueue+0x43/0x50
    [<ffffffff81fe0813>] vsock_connectible_sendmsg+0x373/0x450
    [<ffffffff81d233d5>] ____sys_sendmsg+0x365/0x3a0
    [<ffffffff81d246f4>] ___sys_sendmsg+0x84/0xd0
    [<ffffffff81d26f47>] __sys_sendmsg+0x47/0x80
    [<ffffffff820d3df3>] do_syscall_64+0x93/0x180
    [<ffffffff8220012b>] entry_SYSCALL_64_after_hwframe+0x76/0x7e

Fixes: 581512a6dc ("vsock/virtio: MSG_ZEROCOPY flag support")
Signed-off-by: Michal Luczaj <mhal@rbox.co>
Reviewed-by: Stefano Garzarella <sgarzare@redhat.com>
Acked-by: Arseniy Krasnov <avkrasnov@salutedevices.com>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
2024-11-12 12:16:51 +01:00
..
af_vsock_tap.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
af_vsock.c vsock: Fix sk_error_queue memory leak 2024-11-12 12:16:51 +01:00
diag.c sock_diag: add module pointer to "struct sock_diag_handler" 2024-01-23 15:13:54 +01:00
hyperv_transport.c virtio/vsock: send credit update during setting SO_RCVLOWAT 2023-12-15 10:37:35 +00:00
Kconfig vsock: add vsock_loopback transport 2019-12-11 15:01:23 -08:00
Makefile vsock: support sockmap 2023-03-29 08:19:38 +01:00
virtio_transport_common.c virtio/vsock: Fix accept_queue memory leak 2024-11-12 12:16:51 +01:00
virtio_transport.c virtio: bugfixes 2024-10-07 11:33:26 -07:00
vmci_transport_notify_qstate.c vmci/vsock: check SO_RCVLOWAT before wake up reader 2022-08-23 10:43:12 +02:00
vmci_transport_notify.c vmci/vsock: check SO_RCVLOWAT before wake up reader 2022-08-23 10:43:12 +02:00
vmci_transport_notify.h vsock: remove include/linux/vm_sockets.h file 2019-11-14 18:12:17 -08:00
vmci_transport.c Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2023-04-06 12:01:20 -07:00
vmci_transport.h vsock: Remove unused function declarations 2023-07-31 14:41:08 -07:00
vsock_addr.c vsock_addr: Check for supported flag values 2020-12-14 19:33:39 -08:00
vsock_bpf.c bpf, vsock: Drop static vsock_bpf_prot initialization 2024-10-17 13:02:55 +02:00
vsock_loopback.c vsock/virtio: add SIOCOUTQ support for all virtio based transports 2024-08-02 09:20:28 +01:00