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| author | Kees Cook <keescook@chromium.org> | 2018-12-06 15:50:38 -0800 |
|---|---|---|
| committer | Shuah Khan <shuah@kernel.org> | 2018-12-11 17:57:30 -0700 |
| commit | 2bd61abead58c82714a1f6fa6beb0fd0df6a6d13 (patch) | |
| tree | 84bc6c5bc55599211c2b3b3aaf7bd0ce9113cd4e | |
| parent | 651022382c7f8da46cb4872a545ee1da6d097d2a (diff) | |
| download | linux-2bd61abead58c82714a1f6fa6beb0fd0df6a6d13.tar.bz2 | |
selftests/seccomp: Remove SIGSTOP si_pid check
Commit f149b3155744 ("signal: Never allocate siginfo for SIGKILL or SIGSTOP")
means that the seccomp selftest cannot check si_pid under SIGSTOP anymore.
Since it's believed[1] there are no other userspace things depending on the
old behavior, this removes the behavioral check in the selftest, since it's
more a "extra" sanity check (which turns out, maybe, not to have been
useful to test).
[1] https://lkml.kernel.org/r/CAGXu5jJaZAOzP1qFz66tYrtbuywqb+UN2SOA1VLHpCCOiYvYeg@mail.gmail.com
Reported-by: Tycho Andersen <tycho@tycho.ws>
Suggested-by: Eric W. Biederman <ebiederm@xmission.com>
Signed-off-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Shuah Khan <shuah@kernel.org>
| -rw-r--r-- | tools/testing/selftests/seccomp/seccomp_bpf.c | 9 |
1 files changed, 7 insertions, 2 deletions
diff --git a/tools/testing/selftests/seccomp/seccomp_bpf.c b/tools/testing/selftests/seccomp/seccomp_bpf.c index e1473234968d..c9a2abf8be1b 100644 --- a/tools/testing/selftests/seccomp/seccomp_bpf.c +++ b/tools/testing/selftests/seccomp/seccomp_bpf.c @@ -2731,9 +2731,14 @@ TEST(syscall_restart) ASSERT_EQ(child_pid, waitpid(child_pid, &status, 0)); ASSERT_EQ(true, WIFSTOPPED(status)); ASSERT_EQ(SIGSTOP, WSTOPSIG(status)); - /* Verify signal delivery came from parent now. */ ASSERT_EQ(0, ptrace(PTRACE_GETSIGINFO, child_pid, NULL, &info)); - EXPECT_EQ(getpid(), info.si_pid); + /* + * There is no siginfo on SIGSTOP any more, so we can't verify + * signal delivery came from parent now (getpid() == info.si_pid). + * https://lkml.kernel.org/r/CAGXu5jJaZAOzP1qFz66tYrtbuywqb+UN2SOA1VLHpCCOiYvYeg@mail.gmail.com + * At least verify the SIGSTOP via PTRACE_GETSIGINFO. + */ + EXPECT_EQ(SIGSTOP, info.si_signo); /* Restart nanosleep with SIGCONT, which triggers restart_syscall. */ ASSERT_EQ(0, kill(child_pid, SIGCONT)); |