[Crash-utility] Re: [PATCH] Fix wrong detection of "[LIVEPATCH]" on old kernels

Hi Kazu, Thanks for the fix. The patch LGTM, so ack. Thanks, Tao Liu On Thu, Apr 16, 2026 at 4:35 PM HAGIO KAZUHITO(萩尾　一仁) <k-hagio-ab(a)nec.com&gt; wrote: > > From: Kazuhito Hagio <k-hagio-ab(a)nec.com&gt; > > 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&gt; > --- > 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 >