diff options
| -rw-r--r-- | src/conf/sysconf.c | 9 |
1 files changed, 7 insertions, 2 deletions
diff --git a/src/conf/sysconf.c b/src/conf/sysconf.c index 60d3e745..8dd5c725 100644 --- a/src/conf/sysconf.c +++ b/src/conf/sysconf.c @@ -220,8 +220,13 @@ long sysconf(int name) return (mem > LONG_MAX) ? LONG_MAX : mem; case JT_MINSIGSTKSZ & 255: case JT_SIGSTKSZ & 255: ; - long val = __getauxval(AT_MINSIGSTKSZ); - if (val < MINSIGSTKSZ) val = MINSIGSTKSZ; + /* Value from auxv/kernel is only sigfame size. Clamp it + * to at least 1k below arch's traditional MINSIGSTKSZ, + * then add 1k of working space for signal handler. */ + unsigned long sigframe_sz = __getauxval(AT_MINSIGSTKSZ); + if (sigframe_sz < MINSIGSTKSZ - 1024) + sigframe_sz = MINSIGSTKSZ - 1024; + unsigned val = sigframe_sz + 1024; if (values[name] == JT_SIGSTKSZ) val += SIGSTKSZ - MINSIGSTKSZ; return val; |