Greg Kroah-Hartman
598cf27219
Link: https://lore.kernel.org/r/20260217200002.683975158@linuxfoundation.org Tested-by: Florian Fainelli <florian.fainelli@broadcom.com> Tested-by: Takeshi Ogasawara <takeshi.ogasawara@futuring-girl.com> Tested-by: Peter Schneider <pschneider1968@googlemail.com> Tested-by: Jon Hunter <jonathanh@nvidia.com> Tested-by: Salvatore Bonaccorso <carnil@debian.org> Tested-by: Brett A C Sheffield <bacs@librecast.net> Tested-by: Mark Brown <broonie@kernel.org> Tested-by: Luna Jernberg <droidbittin@gmail.com> Tested-by: Ronald Warsow <rwarsow@gmx.de> Tested-by: Justin M. Forbes <jforbes@fedoraproject.org> Tested-by: Ron Economos <re@w6rz.net> Tested-by: Miguel Ojeda <ojeda@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
43 lines
934 B
C
43 lines
934 B
C
// SPDX-License-Identifier: GPL-2.0
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#include <sys/mman.h>
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#include <stdio.h>
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#include <unistd.h>
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#include <string.h>
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#include <sys/time.h>
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#include <sys/resource.h>
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#include "kselftest.h"
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static void test_limit(void)
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{
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struct rlimit lims;
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void *map;
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if (getrlimit(RLIMIT_MEMLOCK, &lims))
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ksft_exit_fail_msg("getrlimit: %s\n", strerror(errno));
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if (mlockall(MCL_ONFAULT | MCL_FUTURE))
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ksft_exit_fail_msg("mlockall: %s\n", strerror(errno));
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map = mmap(NULL, 2 * lims.rlim_max, PROT_READ | PROT_WRITE,
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MAP_PRIVATE | MAP_ANONYMOUS | MAP_POPULATE, -1, 0);
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ksft_test_result(map == MAP_FAILED, "The map failed respecting mlock limits\n");
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if (map != MAP_FAILED)
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munmap(map, 2 * lims.rlim_max);
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munlockall();
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}
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int main(int argc, char **argv)
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{
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ksft_print_header();
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ksft_set_plan(1);
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if (!getuid())
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ksft_test_result_skip("The test must be run from a normal user\n");
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else
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test_limit();
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ksft_finished();
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}
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