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util: Check if kernel-provided info is consistent with itself

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Just in case someone re-mounted /sys/fs/resctrl with different mount
options (cdp), add a check here.

Resolves: https://bugzilla.redhat.com/show_bug.cgi?id=1540780

Signed-off-by: Martin Kletzander <mkletzan@redhat.com>
This commit is contained in:
Martin Kletzander 2018-02-02 15:05:22 +01:00
parent 07dcad41a2
commit d300b54487
1 changed files with 11 additions and 0 deletions
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11
src/util/virresctrl.c
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@ -941,6 +941,17 @@ virResctrlAllocParseProcessCache(virResctrlInfoPtr resctrl,
if (!mask)
return -1;
if (!resctrl ||
level >= resctrl->nlevels ||
!resctrl->levels[level] ||
!resctrl->levels[level]->types[type]) {
virReportError(VIR_ERR_INTERNAL_ERROR,
_("Missing or inconsistent resctrl info for "
"level '%ud' type '%s'"),
level, virCacheTypeToString(type));
goto cleanup;
}
if (virBitmapShrink(mask, resctrl->levels[level]->types[type]->bits) < 0)
goto cleanup;