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alistair23-linux/drivers/misc/vmw_vmci
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Alex Dewar 90ca6333fd VMCI: check return value of get_user_pages_fast() for errors 
In a couple of places in qp_host_get_user_memory(),
get_user_pages_fast() is called without properly checking for errors. If
e.g. -EFAULT is returned, this negative value will then be passed on to
qp_release_pages(), which expects a u64 as input.

Fix this by only calling qp_release_pages() when we have a positive
number returned.

Fixes: 06164d2b72 ("VMCI: queue pairs implementation.")
Signed-off-by: Alex Dewar <alex.dewar90@gmail.com>
Link: https://lore.kernel.org/r/20200825164522.412392-1-alex.dewar90@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-08-28 12:31:39 +02:00
..
Kconfig treewide: Add SPDX license identifier - Makefile/Kconfig 2019-05-21 10:50:46 +02:00
Makefile treewide: Add SPDX license identifier - Makefile/Kconfig 2019-05-21 10:50:46 +02:00
vmci_context.c VMCI: Fix integer overflow in VMCI handle arrays 2019-06-21 16:04:05 +02:00
vmci_context.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 321 2019-06-05 17:37:05 +02:00
vmci_datagram.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 321 2019-06-05 17:37:05 +02:00
vmci_datagram.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 321 2019-06-05 17:37:05 +02:00
vmci_doorbell.c VMCI: Release resource if the work is already queued 2019-08-28 22:57:07 +02:00
vmci_doorbell.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 321 2019-06-05 17:37:05 +02:00
vmci_driver.c vsock/vmci: make vmci_vsock_cb_host_called static 2019-11-20 12:39:29 -08:00
vmci_driver.h vsock/vmci: register vmci_transport only when VMCI guest/host are active 2019-11-14 18:12:18 -08:00
vmci_event.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 321 2019-06-05 17:37:05 +02:00
vmci_event.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 321 2019-06-05 17:37:05 +02:00
vmci_guest.c vsock/vmci: register vmci_transport only when VMCI guest/host are active 2019-11-14 18:12:18 -08:00
vmci_handle_array.c VMCI: Fix integer overflow in VMCI handle arrays 2019-06-21 16:04:05 +02:00
vmci_handle_array.h VMCI: Fix integer overflow in VMCI handle arrays 2019-06-21 16:04:05 +02:00
vmci_host.c vmci_host: get rid of pointless access_ok() 2020-05-29 11:06:38 -04:00
vmci_queue_pair.c VMCI: check return value of get_user_pages_fast() for errors 2020-08-28 12:31:39 +02:00
vmci_queue_pair.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 321 2019-06-05 17:37:05 +02:00
vmci_resource.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 321 2019-06-05 17:37:05 +02:00
vmci_resource.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 321 2019-06-05 17:37:05 +02:00
vmci_route.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 321 2019-06-05 17:37:05 +02:00
vmci_route.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 321 2019-06-05 17:37:05 +02:00