I'm trying OpenSSL 1.1.1a on FreeBSD 11.2-RELEASE-p4 and got the following
crash in one of my test programs (I compiled OpenSSL with -g after the
first time this happened to get at least some debug info):
#0 __je_huge_salloc (tsdn=<value optimized out>, ptr=<value optimized out>) at extent.h:114
#1 0x000000080122d01e in ifree (tsd=<value optimized out>) at arena.h:141468
#2 0x000000080122d5b1 in __free (ptr=0x800000000) at tsd.h:716
#3 0x0000000801535abb in _pthread_rwlock_destroy (rwlock=<value optimized out>)
4at /usr/src/lib/libthr/thread/thr_rwlock.c:127
#4 0x0000000800e67c28 in CRYPTO_THREAD_lock_free (lock=0x801a27298) at crypto/threads_pthread.c:102
#5 0x0000000800dcb760 in EVP_PKEY_free (x=0x801a7b370) at crypto/evp/p_lib.c:601
#6 0x00000008008affce in ssl3_free (s=0x801bbd000) at ssl/s3_lib.c:3321
#7 0x0000000800904c91 in tls1_free (s=0x801bbd000) at ssl/t1_lib.c:115
#8 0x00000008008c085c in SSL_free (s=0x801bbd000) at ssl/ssl_lib.c:1204
#9 0x00000000004133d3 in sm_tlsbio_close (fp=0x6612e0, flags=0) at ../../mta/libmta/tlsbio.c:391
...
(gdb) p (pthread_rwlock_t)0x801a27298
$2 = (struct pthread_rwlock *) 0x801a27298
(gdb) p *$2
$3 = {lock = {rw_state = 1, rw_flags = 0, rw_blocked_readers = 1, rw_blocked_writers = 0, rw_spare = 0x801a272a8},
owner = 27402512}
Since my program doesn't use pthreads, I compiled OpenSSL with no-threads
and the crash doesn't happen (surprise...).
Is this a bug in my application or in OpenSSL? I'm not sure how to debug
this any further (without going into the details of pthreads on that OS).
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