[Crash-utility] [PATCH] Fix wrong detection of "[LIVEPATCH]" on old kernels
From: Kazuhito Hagio <k-hagio-ab(a)nec.com>
The crash-utility wrongly prints "[LIVEPATCH]" occasionally on old
kernels:
KERNEL: vmlinux [LIVEPATCH]
DUMPFILE: dump.d31 [PARTIAL DUMP]
...
RELEASE: 2.6.24
In is_livepatch(), show_kernel_tains() does not set any value to buf on
kernels that have the "tainted" symbol, so it's printed when the
uninitialized buf has "K" by chance. On very old kernels, but this
issue affects makedumpfile tests.
Signed-off-by: Kazuhito Hagio <k-hagio-ab(a)nec.com>
---
kernel.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/kernel.c b/kernel.c
index 8781d6a22414..1e639ec6a007 100644
--- a/kernel.c
+++ b/kernel.c
@@ -5678,7 +5678,7 @@ is_livepatch(void)
{
int i;
struct load_module *lm;
- char buf[BUFSIZE];
+ char buf[BUFSIZE] = {0};
show_kernel_taints(buf, !VERBOSE);
if (strstr(buf, "K")) /* TAINT_LIVEPATCH */
--
2.31.1