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perf header: Bump up the max number of command line args allowed

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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 <acme@redhat.com>
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
This commit is contained in:
Arnaldo Carvalho de Melo
2026-04-10 19:08:54 -03:00
committed by Namhyung Kim
parent f823d7efb8
commit 06452a412e
1 changed files with 5 additions and 2 deletions
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7
tools/perf/util/header.c
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@@ -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)
{