From: Arnaldo Carvalho de Melo Date: Fri, 10 Apr 2026 22:08:54 +0000 (-0300) Subject: perf header: Bump up the max number of command line args allowed X-Git-Url: http://git.ipfire.org/index.cgi?a=commitdiff_plain;h=06452a412e5e89c62cd4917a457c5cfd43dc1ead;p=thirdparty%2Fkernel%2Flinux.git perf header: Bump up the max number of command line args allowed We need to do some upper limit validation, bump up the arbitrary limit as per suggestion of Sashiko about command line wildcard expansion ending up with more than 32768 args. Link: https://sashiko.dev/#/patchset/20260408172846.96360-1-acme%40kernel.org Signed-off-by: Arnaldo Carvalho de Melo Signed-off-by: Namhyung Kim --- diff --git a/tools/perf/util/header.c b/tools/perf/util/header.c index a2796b72adc4d..22c44b6f0b098 100644 --- a/tools/perf/util/header.c +++ b/tools/perf/util/header.c @@ -2795,8 +2795,11 @@ process_event_desc(struct feat_fd *ff, void *data __maybe_unused) return 0; } -// Some reasonable arbitrary max for the number of command line arguments -#define MAX_CMDLINE_NR 32768 +/* + * Some arbitrary max for the number of command line arguments, + * Wildcards can expand and end up with tons of command line args. + */ +#define MAX_CMDLINE_NR 1048576 static int process_cmdline(struct feat_fd *ff, void *data __maybe_unused) {