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pstore/ram: Rate-limit "uncorrectable error in header" message 

There is a quite huge "uncorrectable error in header" flood in KMSG
on a clean system boot since there is no pstore buffer saved in RAM.
Let's silence the redundant noisy messages by rate-limiting the printk
message. Now there are maximum 10 messages printed repeatedly instead
of 35+.

Signed-off-by: Dmitry Osipenko <digetx@gmail.com>
Signed-off-by: Kees Cook <keescook@chromium.org>
Link: https://lore.kernel.org/r/20210302095850.30894-1-digetx@gmail.com
This commit is contained in:
Dmitry Osipenko 2021-03-02 12:58:50 +03:00 committed by Kees Cook
parent 9c7d83ae6b
commit 7db688e99c
1 changed files with 1 additions and 1 deletions
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2
fs/pstore/ram_core.c
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@ -246,7 +246,7 @@ static int persistent_ram_init_ecc(struct persistent_ram_zone *prz,
pr_info("error in header, %d\n", numerr);
prz->corrected_bytes += numerr;
} else if (numerr < 0) {
pr_info("uncorrectable error in header\n");
pr_info_ratelimited("uncorrectable error in header\n");
prz->bad_blocks++;
}