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top: move free(prev_hist) out of signal path

Browse Source 
It was seen being called recursively on repeated signals,
leading to double free

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
This commit is contained in:
Denys Vlasenko 2016-08-19 11:07:31 +02:00
parent b11be131b7
commit aedc3fe19f
1 changed files with 6 additions and 6 deletions
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12
procps/top.c
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@ -728,12 +728,6 @@ static void reset_term(void)
{
if (!OPT_BATCH_MODE)
tcsetattr_stdin_TCSANOW(&initial_settings);
if (ENABLE_FEATURE_CLEAN_UP) {
clearmems();
# if ENABLE_FEATURE_TOP_CPU_USAGE_PERCENTAGE
free(prev_hist);
# endif
}
}
static void sig_catcher(int sig)
@ -1258,5 +1252,11 @@ int top_main(int argc UNUSED_PARAM, char **argv)
#if ENABLE_FEATURE_USE_TERMIOS
reset_term();
#endif
if (ENABLE_FEATURE_CLEAN_UP) {
clearmems();
#if ENABLE_FEATURE_TOP_CPU_USAGE_PERCENTAGE
free(prev_hist);
#endif
}
return EXIT_SUCCESS;
}