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| author | Eric Biggers <ebiggers@google.com> | 2020-10-26 19:31:12 +0300 |
|---|---|---|
| committer | Herbert Xu <herbert@gondor.apana.org.au> | 2020-11-06 06:29:10 +0300 |
| commit | 09a5ef9644bc0e167984136b711eb08206733af8 (patch) | |
| tree | 2fd7b5f92c8bd2b5396055d95fe9b1a22438880b /crypto/testmgr.c | |
| parent | 6e5972fa4a0db6912714d465485bdae91a99ccc2 (diff) | |
| download | linux-09a5ef9644bc0e167984136b711eb08206733af8.tar.xz | |
crypto: testmgr - WARN on test failure
Currently, by default crypto self-test failures only result in a
pr_warn() message and an "unknown" status in /proc/crypto. Both of
these are easy to miss. There is also an option to panic the kernel
when a test fails, but that can't be the default behavior.
A crypto self-test failure always indicates a kernel bug, however, and
there's already a standard way to report (recoverable) kernel bugs --
the WARN() family of macros. WARNs are noisier and harder to miss, and
existing test systems already know to look for them in dmesg or via
/proc/sys/kernel/tainted.
Therefore, call WARN() when an algorithm fails its self-tests.
Signed-off-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Diffstat (limited to 'crypto/testmgr.c')
| -rw-r--r-- | crypto/testmgr.c | 20 |
1 files changed, 13 insertions, 7 deletions
diff --git a/crypto/testmgr.c b/crypto/testmgr.c index dcc1fa415e8e..321e38eef51b 100644 --- a/crypto/testmgr.c +++ b/crypto/testmgr.c @@ -5664,15 +5664,21 @@ int alg_test(const char *driver, const char *alg, u32 type, u32 mask) type, mask); test_done: - if (rc && (fips_enabled || panic_on_fail)) { - fips_fail_notify(); - panic("alg: self-tests for %s (%s) failed in %s mode!\n", - driver, alg, fips_enabled ? "fips" : "panic_on_fail"); + if (rc) { + if (fips_enabled || panic_on_fail) { + fips_fail_notify(); + panic("alg: self-tests for %s (%s) failed in %s mode!\n", + driver, alg, + fips_enabled ? "fips" : "panic_on_fail"); + } + WARN(1, "alg: self-tests for %s (%s) failed (rc=%d)", + driver, alg, rc); + } else { + if (fips_enabled) + pr_info("alg: self-tests for %s (%s) passed\n", + driver, alg); } - if (fips_enabled && !rc) - pr_info("alg: self-tests for %s (%s) passed\n", driver, alg); - return rc; notest: |