[libvirt] [PATCH] Buffer size too small when reading sysinfo on S390
On a system with 160 CPUs the /proc/cpuinfo size grows beyond
the currently set limit of 10KB causing an internal error.
This patch increases the buffer size for S390 to 64KB.
Signed-off-by: Boris Fiuczynski <fiuczy(a)linux.vnet.ibm.com>
---
src/util/virsysinfo.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/src/util/virsysinfo.c b/src/util/virsysinfo.c
index 1bb6392..613bab9 100644
--- a/src/util/virsysinfo.c
+++ b/src/util/virsysinfo.c
@@ -377,6 +377,8 @@ virSysinfoRead(void)
# pragma GCC diagnostic ignored "-Wlogical-op"
# endif
+# define S390_CPUINFO_FILE_LEN (64*1024) /* 64KB limit for /proc/cpuinfo file */
+
static char *
virSysinfoParseDelimited(const char *base, const char *name, char **value,
char delim1, char delim2)
@@ -471,7 +473,7 @@ virSysinfoRead(void)
goto no_memory;
/* Gather info from /proc/cpuinfo */
- if (virFileReadAll(CPUINFO, CPUINFO_FILE_LEN, &outbuf) < 0) {
+ if (virFileReadAll(CPUINFO, S390_CPUINFO_FILE_LEN, &outbuf) < 0) {
virReportError(VIR_ERR_INTERNAL_ERROR,
_("Failed to open %s"), CPUINFO);
return NULL;
--
1.9.3