From: Thomas Weißschuh Date: Wed, 22 Nov 2023 22:49:52 +0000 (+0100) Subject: selftests/nolibc: disable coredump via setrlimit X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=d543d9ddf593b1f4cb1d57d9ac0ad279fe18adaf;p=linux.git selftests/nolibc: disable coredump via setrlimit qemu-user does has its own implementation of coredumping. That implementation does not respect the call to prctl(PR_SET_DUMPABLE, 0) in run_protection(). This leads to a coredump for every test run under qemu-user. Use also setrlimit() to inhibit coredump creation which is respected by qemu-user. Link: https://lore.kernel.org/qemu-devel/20231115-qemu-user-dumpable-v1-2-edbe7f0fbb02@t-8ch.de/ Signed-off-by: Thomas Weißschuh Link: https://lore.kernel.org/lkml/20231123-nolibc-rlimit-v1-3-a428b131de2a@weissschuh.net/ Acked-by: Willy Tarreau --- diff --git a/tools/testing/selftests/nolibc/nolibc-test.c b/tools/testing/selftests/nolibc/nolibc-test.c index a0271ac313ee3..6ba4f8275ac47 100644 --- a/tools/testing/selftests/nolibc/nolibc-test.c +++ b/tools/testing/selftests/nolibc/nolibc-test.c @@ -1166,6 +1166,7 @@ static int run_protection(int min __attribute__((unused)), { pid_t pid; int llen = 0, status; + struct rlimit rlimit = { 0, 0 }; llen += printf("0 -fstackprotector "); @@ -1197,6 +1198,7 @@ static int run_protection(int min __attribute__((unused)), close(STDERR_FILENO); prctl(PR_SET_DUMPABLE, 0, 0, 0, 0); + setrlimit(RLIMIT_CORE, &rlimit); smash_stack(); return 1;