diff options
| author | Dave Airlie <airlied@redhat.com> | 2024-04-22 14:35:22 +1000 |
|---|---|---|
| committer | Dave Airlie <airlied@redhat.com> | 2024-04-22 14:35:52 +1000 |
| commit | 0208ca55aa9c9b997da1f5bc45c4e98916323f08 (patch) | |
| tree | e3130b2116f7738ac7cd79ad71698f545bb7db69 /drivers/hv/connection.c | |
| parent | 2871ec40994912ce4f2e2d5072a428eb84c77d3c (diff) | |
| parent | ed30a4a51bb196781c8058073ea720133a65596f (diff) | |
Backmerge tag 'v6.9-rc5' into drm-next
Linux 6.9-rc5
I've had a persistent msm failure on clang, and the fix is in fixes
so just pull it back to fix that.
Signed-off-by: Dave Airlie <airlied@redhat.com>
Diffstat (limited to 'drivers/hv/connection.c')
| -rw-r--r-- | drivers/hv/connection.c | 29 |
1 files changed, 22 insertions, 7 deletions
diff --git a/drivers/hv/connection.c b/drivers/hv/connection.c index 3cabeeabb1ca..f001ae880e1d 100644 --- a/drivers/hv/connection.c +++ b/drivers/hv/connection.c @@ -237,8 +237,17 @@ int vmbus_connect(void) vmbus_connection.monitor_pages[0], 1); ret |= set_memory_decrypted((unsigned long) vmbus_connection.monitor_pages[1], 1); - if (ret) + if (ret) { + /* + * If set_memory_decrypted() fails, the encryption state + * of the memory is unknown. So leak the memory instead + * of risking returning decrypted memory to the free list. + * For simplicity, always handle both pages the same. + */ + vmbus_connection.monitor_pages[0] = NULL; + vmbus_connection.monitor_pages[1] = NULL; goto cleanup; + } /* * Set_memory_decrypted() will change the memory contents if @@ -337,13 +346,19 @@ void vmbus_disconnect(void) vmbus_connection.int_page = NULL; } - set_memory_encrypted((unsigned long)vmbus_connection.monitor_pages[0], 1); - set_memory_encrypted((unsigned long)vmbus_connection.monitor_pages[1], 1); + if (vmbus_connection.monitor_pages[0]) { + if (!set_memory_encrypted( + (unsigned long)vmbus_connection.monitor_pages[0], 1)) + hv_free_hyperv_page(vmbus_connection.monitor_pages[0]); + vmbus_connection.monitor_pages[0] = NULL; + } - hv_free_hyperv_page(vmbus_connection.monitor_pages[0]); - hv_free_hyperv_page(vmbus_connection.monitor_pages[1]); - vmbus_connection.monitor_pages[0] = NULL; - vmbus_connection.monitor_pages[1] = NULL; + if (vmbus_connection.monitor_pages[1]) { + if (!set_memory_encrypted( + (unsigned long)vmbus_connection.monitor_pages[1], 1)) + hv_free_hyperv_page(vmbus_connection.monitor_pages[1]); + vmbus_connection.monitor_pages[1] = NULL; + } } /* |