Messages in this thread Patch in this message | | | From | Colin Ian King <> | Subject | [PATCH] fs/coredump: rate limit the unsafe core_pattern warning | Date | Wed, 19 Jan 2022 22:27:29 +0000 |
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It is possible to spam the kernel log with many invalid attempts to set the core_pattern. Rate limit the warning message to make it less spammy.
Signed-off-by: Colin Ian King <colin.i.king@gmail.com> --- fs/coredump.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/fs/coredump.c b/fs/coredump.c index 1c060c0a2d72..2dadc1dcaa2c 100644 --- a/fs/coredump.c +++ b/fs/coredump.c @@ -898,7 +898,7 @@ void validate_coredump_safety(void) { if (suid_dumpable == SUID_DUMP_ROOT && core_pattern[0] != '/' && core_pattern[0] != '|') { - pr_warn( + pr_warn_ratelimited( "Unsafe core_pattern used with fs.suid_dumpable=2.\n" "Pipe handler or fully qualified core dump path required.\n" "Set kernel.core_pattern before fs.suid_dumpable.\n" -- 2.33.1
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