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bpf: do not blindly change rlimit in reuseport net selftest

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[ 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>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Eric Dumazet 2018-10-05 19:38:46 -07:00 committed by Greg Kroah-Hartman
parent 43c7313ec7
commit 9c9cd35cb3
1 changed files with 9 additions and 4 deletions
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13
tools/testing/selftests/net/reuseport_bpf.c
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@ -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)