From: Eric Dumazet edumazet@google.com
[ Upstream commit 262f9d811c7608f1e74258ceecfe1fa213bdf912 ]
If the current process has unlimited RLIMIT_MEMLOCK, we should should leave it as is.
Fixes: 941ff6f11c02 ("bpf: fix rlimit in reuseport net selftest") Signed-off-by: John Sperbeck jsperbeck@google.com Signed-off-by: Eric Dumazet edumazet@google.com Acked-by: Daniel Borkmann daniel@iogearbox.net Signed-off-by: Daniel Borkmann daniel@iogearbox.net Signed-off-by: Sasha Levin sashal@kernel.org --- tools/testing/selftests/net/reuseport_bpf.c | 13 +++++++++---- 1 file changed, 9 insertions(+), 4 deletions(-)
diff --git a/tools/testing/selftests/net/reuseport_bpf.c b/tools/testing/selftests/net/reuseport_bpf.c index cad14cd0ea92..b5277106df1f 100644 --- a/tools/testing/selftests/net/reuseport_bpf.c +++ b/tools/testing/selftests/net/reuseport_bpf.c @@ -437,14 +437,19 @@ void enable_fastopen(void) } }
-static struct rlimit rlim_old, rlim_new; +static struct rlimit rlim_old;
static __attribute__((constructor)) void main_ctor(void) { getrlimit(RLIMIT_MEMLOCK, &rlim_old); - rlim_new.rlim_cur = rlim_old.rlim_cur + (1UL << 20); - rlim_new.rlim_max = rlim_old.rlim_max + (1UL << 20); - setrlimit(RLIMIT_MEMLOCK, &rlim_new); + + if (rlim_old.rlim_cur != RLIM_INFINITY) { + struct rlimit rlim_new; + + rlim_new.rlim_cur = rlim_old.rlim_cur + (1UL << 20); + rlim_new.rlim_max = rlim_old.rlim_max + (1UL << 20); + setrlimit(RLIMIT_MEMLOCK, &rlim_new); + } }
static __attribute__((destructor)) void main_dtor(void)