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kernel/panic: return early from print_tainted() when not tainted

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Link: https://lkml.kernel.org/r/01d6c03de1c9d1b52b59c652a3704a0a9886ed63.1717146197.git.jani.nikula@intel.com
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
This commit is contained in:
Jani Nikula 2024-05-31 12:04:54 +03:00 committed by Andrew Morton
parent 21516c56ff
commit f4b6242338
1 changed files with 13 additions and 12 deletions
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25
kernel/panic.c
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@ -507,22 +507,23 @@ const struct taint_flag taint_flags[TAINT_FLAGS_COUNT] = {
const char *print_tainted(void)
{
static char buf[TAINT_FLAGS_COUNT + sizeof("Tainted: ")];
char *s;
int i;
BUILD_BUG_ON(ARRAY_SIZE(taint_flags) != TAINT_FLAGS_COUNT);
if (tainted_mask) {
char *s;
int i;
s = buf + sprintf(buf, "Tainted: ");
for (i = 0; i < TAINT_FLAGS_COUNT; i++) {
const struct taint_flag *t = &taint_flags[i];
*s++ = test_bit(i, &tainted_mask) ?
t->c_true : t->c_false;
}
*s = 0;
} else
if (!tainted_mask) {
snprintf(buf, sizeof(buf), "Not tainted");
return buf;
}
s = buf + sprintf(buf, "Tainted: ");
for (i = 0; i < TAINT_FLAGS_COUNT; i++) {
const struct taint_flag *t = &taint_flags[i];
*s++ = test_bit(i, &tainted_mask) ?
t->c_true : t->c_false;
}
*s = 0;
return buf;
}