Commit efc07e37 authored by Slawomir Ptak's avatar Slawomir Ptak Committed by Tomasz Zawadzki
Browse files

idxd: Error log for mmap 



Added an error log for the case, when mmap fails
due to insufficient capabilities. The driver can fail
the mmap operation in some cases (see INTEL-SA-01084
security advisory).

Change-Id: Icf6038fec9b0dab6198e98f3e568904d07c7ef9c
Signed-off-by: default avatarSlawomir Ptak <slawomir.ptak@intel.com>
Reviewed-on: https://review.spdk.io/gerrit/c/spdk/spdk/+/23198


Community-CI: Mellanox Build Bot
Reviewed-by: default avatarSebastian Brzezinka <sebastian.brzezinka@intel.com>
Reviewed-by: default avatarJim Harris <jim.harris@samsung.com>
Reviewed-by: default avatarKonrad Sztyber <konrad.sztyber@intel.com>
Reviewed-by: default avatarTomasz Zawadzki <tomasz.zawadzki@intel.com>
Tested-by: default avatarSPDK CI Jenkins <sys_sgci@intel.com>
parent e70594d4

lib/idxd/idxd_kernel.c

+3 −0
Original line number Diff line number Diff line
@@ -153,6 +153,9 @@ kernel_idxd_probe(void *cb_ctx, spdk_idxd_attach_cb attach_cb, spdk_idxd_probe_c 
			kernel_idxd->portal = mmap(NULL, 0x1000, PROT_WRITE,

						   MAP_SHARED | MAP_POPULATE, kernel_idxd->fd, 0);

			if (kernel_idxd->portal == MAP_FAILED) {

				if (errno == EPERM) {

					SPDK_ERRLOG("CAP_SYS_RAWIO capabilities required to mmap the portal\n");

				}

				perror("mmap");

				continue;

			}