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linux/net/vmw_vsock
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Dexuan Cui d153d468c4 vsock: fix possible infinite sleep in vsock_connectible_wait_data() 
[ Upstream commit 466a85336f ]

Currently vsock_connectible_has_data() may miss a wakeup operation
between vsock_connectible_has_data() == 0 and the prepare_to_wait().

Fix the race by adding the process to the wait queue before checking
vsock_connectible_has_data().

Fixes: b3f7fd5488 ("af_vsock: separate wait data loop")
Signed-off-by: Dexuan Cui <decui@microsoft.com>
Reviewed-by: Stefano Garzarella <sgarzare@redhat.com>
Reported-by: Frédéric Dalleau <frederic.dalleau@docker.com>
Tested-by: Frédéric Dalleau <frederic.dalleau@docker.com>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
History 2022-11-10 18:15:31 +01:00
..
af_vsock.c vsock: fix possible infinite sleep in vsock_connectible_wait_data() 2022-11-10 18:15:31 +01:00
af_vsock_tap.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
diag.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 321 2019-06-05 17:37:05 +02:00
hyperv_transport.c Drivers: hv: vmbus: Copy packets sent by Hyper-V out of the ring buffer 2021-05-14 17:37:46 +00:00
Kconfig vsock: add vsock_loopback transport 2019-12-11 15:01:23 -08:00
Makefile vsock: add vsock_loopback transport 2019-12-11 15:01:23 -08:00
virtio_transport.c vsock/virtio: enable VQs early on probe 2022-04-08 14:23:51 +02:00
virtio_transport_common.c vhost/vsock: Use kvmalloc/kvfree for larger packets. 2022-10-26 12:34:47 +02:00
vmci_transport.c vsock: each transport cycles only on its own sockets 2022-03-23 09:16:41 +01:00
vmci_transport.h vsock: handle buffer_size sockopts in the core 2019-11-14 18:12:18 -08:00
vmci_transport_notify.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 321 2019-06-05 17:37:05 +02:00
vmci_transport_notify.h vsock: remove include/linux/vm_sockets.h file 2019-11-14 18:12:17 -08:00
vmci_transport_notify_qstate.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 321 2019-06-05 17:37:05 +02:00
vsock_addr.c vsock_addr: Check for supported flag values 2020-12-14 19:33:39 -08:00
vsock_loopback.c vsock/loopback: enable SEQPACKET for transport 2021-06-11 13:32:47 -07:00