diff options
| author | Rich Salz <rsalz@openssl.org> | 2016-07-08 13:40:08 -0400 |
|---|---|---|
| committer | Rich Salz <rsalz@openssl.org> | 2017-01-12 11:27:27 -0500 |
| commit | f7edeced4d8d3f650c5ee32f20ba7165da4e3067 (patch) | |
| tree | 53685ab2f88fb0c8c096abce029a4d18fe1d14ec /crypto/init.c | |
| parent | 329f2f4a428b0acb7a579869a13f6cd6bf0a3551 (diff) | |
Add "random malloc failure" tooling
Still needs to be documented, somehow/somewhere.
The env var OPENSSL_MALLOC_FAILURES controls how often malloc/realloc
should fail. It's a set of fields separated by semicolons. Each field
is a count and optional percentage (separated by @) which defaults to 100.
If count is zero then it lasts "forever." For example: 100;@25 means the
first 100 allocations pass, then the rest have a 25% chance of failing
until the program exits or crashes.
If env var OPENSSL_MALLOC_FD parses as a positive integer, a record
of all malloc "shouldfail" tests is written to that file descriptor.
If a malloc will fail, and OPENSSL_NO_CRYPTO_MDEBUG_BACKTRACE is not set
(platform specific), then a backtrace will be written to the descriptor
when a malloc fails. This can be useful because a malloc may fail but
not be checked, and problems will only occur later.
Reviewed-by: Richard Levitte <levitte@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/1252)
Diffstat (limited to 'crypto/init.c')
| -rw-r--r-- | crypto/init.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/crypto/init.c b/crypto/init.c index 3f91119407..8036654c11 100644 --- a/crypto/init.c +++ b/crypto/init.c @@ -68,6 +68,9 @@ DEFINE_RUN_ONCE_STATIC(ossl_init_base) #ifdef OPENSSL_INIT_DEBUG fprintf(stderr, "OPENSSL_INIT: ossl_init_base: Setting up stop handlers\n"); #endif +#ifndef OPENSSL_NO_CRYPTO_MDEBUG + ossl_malloc_setup_failures(); +#endif /* * We use a dummy thread local key here. We use the destructor to detect * when the thread is going to stop (where that feature is available) |