Hello, I am currently trying to fix some memory leaks I introduced into my application, and am left with some leaks (according to valgrind) that seem to relate to RSA_public_encrypt. However, I cannot detect any problem with not freeing memory I explicitly allocated.
Hence the question: Do I miss something using RSA_public_encrypt?
I wrote a wrapper for RSA_public_encrypt, which breaks down to this,
ignoring some sanity checking:
unsigned char *RSA_encrypt(
PublicKeyRSA *public_key,
unsigned char* plaintext,
int *plaintext_length)
{
unsigned char *ciphertext = malloc(RSA_size(public_key));
int result;
result = RSA_public_encrypt(
*plaintext_length,
plaintext,
ciphertext,
public_key,
RSA_PADDING
);
return ciphertext;
}
Valgrind repeatedly reports the RSA_public_encrypt line as a source of
mempory leaks, for example:
==6359== 5,456 (1,144 direct, 4,312 indirect) bytes in 11 blocks are
definitely lost in loss record 22 of 23
==6359== at 0x4C2B6CD: malloc (in
/usr/lib/valgrind/vgpreload_memcheck-amd64-linux.so)
==6359== by 0x5A5E133: CRYPTO_malloc (in
/lib/x86_64-linux-gnu/libcrypto.so.1.0.0)
==6359== by 0x5AA41E6: BN_MONT_CTX_new (in
/lib/x86_64-linux-gnu/libcrypto.so.1.0.0)
==6359== by 0x5AA45B7: BN_MONT_CTX_set_locked (in
/lib/x86_64-linux-gnu/libcrypto.so.1.0.0)
==6359== by 0x5AC751A: ??? (in /lib/x86_64-linux-gnu/libcrypto.so.1.0.0)
==6359== by 0x40A162: RSA_getEncryptedSymmetricKey (rsa.c:217)
...
As suggested in
http://www.mail-archive.com/openssl-dev@openssl.org/msg08797.html,
I added OpenSSL's memleak checking to my application, but I do not know
how to interpret the output:
[14:57:43] 3655 file=bn_lib.c, line=317, thread=139918492813024,
number=264, address=0252FBF0
[14:57:48] 5389 file=bn_lib.c, line=317, thread=139918492813024,
number=136, address=025387A0
[14:57:48] 4941 file=bn_mont.c, line=325, thread=139918492813024,
number=104, address=02530A10
[14:57:53] 7767 file=stack.c, line=125, thread=139918492813024,
number=32, address=02485250
[14:57:48] 5449 file=bn_lib.c, line=317, thread=139918492813024,
number=264, address=02539710
[14:57:48] 4557 file=bn_mont.c, line=325, thread=139918492813024,
number=104, address=0252FA70
[14:57:43] 3435 file=bn_mont.c, line=325, thread=139918492813024,
number=104, address=02526CE0
[14:57:48] 4969 file=bn_lib.c, line=317, thread=139918492813024,
number=264, address=02537770
[14:57:48] 5325 file=bn_mont.c, line=325, thread=139918492813024,
number=104, address=025385F0
[14:57:43] 4074 file=bn_lib.c, line=283, thread=139918492813024,
number=24, address=02525B30
[14:57:53] 7769 file=lhash.c, line=193, thread=139918492813024,
number=24, address=0247D250
[14:57:43] 3533 file=bn_lib.c, line=317, thread=139918492813024,
number=128, address=02526AD0
[14:57:48] 4525 file=bn_lib.c, line=317, thread=139918492813024,
number=136, address=025326B0
[14:57:43] 3691 file=bn_lib.c, line=317, thread=139918492813024,
number=136, address=0252F800
[14:57:48] 5292 file=bn_lib.c, line=283, thread=139918492813024,
number=24, address=025383E0
[14:57:43] 4072 file=rsa_lib.c, line=139, thread=139918492813024,
number=168, address=02525A10
[14:57:43] 4039 file=bn_lib.c, line=317, thread=139918492813024,
number=264, address=025315C0
[14:57:53] 7772 file=stack.c, line=127, thread=139918492813024,
number=32, address=02531590
[14:57:48] 4943 file=bn_lib.c, line=317, thread=139918492813024,
number=128, address=0252E680
[14:57:43] 3367 file=bn_lib.c, line=317, thread=139918492813024,
number=264, address=02526920
[14:57:48] 5231 file=bn_lib.c, line=317, thread=139918492813024,
number=128, address=02538200
[14:57:48] 5005 file=bn_lib.c, line=317, thread=139918492813024,
number=136, address=02537320
[14:57:43] 4107 file=bn_mont.c, line=325, thread=139918492813024,
number=104, address=02530440
[14:57:48] 4653 file=bn_mont.c, line=325, thread=139918492813024,
number=104, address=02524FD0
[14:57:43] 3405 file=bn_lib.c, line=317, thread=139918492813024,
number=8, address=02526770
[14:57:48] 4430 file=bn_lib.c, line=283, thread=139918492813024,
number=24, address=0252F4D0
[14:57:53] 7773 file=lhash.c, line=193, thread=139918492813024,
number=24, address=02536A00
[14:57:43] 3307 file=bn_lib.c, line=317, thread=139918492813024,
number=136, address=02525F10
[14:57:48] 5295 file=bn_lib.c, line=317, thread=139918492813024,
number=8, address=025379D0
[14:57:43] 3404 file=bn_lib.c, line=283, thread=139918492813024,
number=24, address=025266E0
[14:57:48] 4461 file=bn_mont.c, line=325, thread=139918492813024,
number=104, address=0252F440
[14:57:48] 5037 file=bn_mont.c, line=325, thread=139918492813024,
number=104, address=02537170
[14:57:43] 3531 file=bn_mont.c, line=325, thread=139918492813024,
number=104, address=025256B0
[14:57:48] 5294 file=bn_lib.c, line=283, thread=139918492813024,
number=24, address=02537940
[14:57:43] 3306 file=bn_lib.c, line=283, thread=139918492813024,
number=24, address=02525E80
[14:57:43] 3597 file=bn_lib.c, line=317, thread=139918492813024,
number=8, address=0252F3B0
[14:57:43] 3501 file=bn_lib.c, line=317, thread=139918492813024,
number=8, address=02525620
[14:57:48] 4813 file=bn_lib.c, line=317, thread=139918492813024,
number=136, address=025368E0
[14:57:43] 4077 file=bn_lib.c, line=317, thread=139918492813024,
number=8, address=02531200
[14:57:43] 4109 file=bn_lib.c, line=317, thread=139918492813024,
number=128, address=0252FB50
[14:57:48] 4655 file=bn_lib.c, line=317, thread=139918492813024,
number=128, address=0252E320
[14:57:43] 3596 file=bn_lib.c, line=283, thread=139918492813024,
number=24, address=0252F320
[14:57:48] 5229 file=bn_mont.c, line=325, thread=139918492813024,
number=104, address=02537880
[14:57:43] 3500 file=bn_lib.c, line=283, thread=139918492813024,
number=24, address=02525590
[14:57:43] 4076 file=bn_lib.c, line=283, thread=139918492813024,
number=24, address=02531170
[14:57:48] 4623 file=bn_lib.c, line=317, thread=139918492813024,
number=8, address=0252E290
[14:57:43] 3690 file=bn_lib.c, line=283, thread=139918492813024,
number=24, address=02525D30
[14:57:48] 4622 file=bn_lib.c, line=283, thread=139918492813024,
number=24, address=0252E200
[14:57:48] 5197 file=bn_lib.c, line=317, thread=139918492813024,
number=136, address=02537F30
[14:57:48] 5002 file=rsa_lib.c, line=139, thread=139918492813024,
number=168, address=02536F00
[14:57:48] 5196 file=bn_lib.c, line=283, thread=139918492813024,
number=24, address=02537EA0
[14:57:43] 4327 file=bn_lib.c, line=317, thread=139918492813024,
number=264, address=025327F0
[14:57:48] 4911 file=bn_lib.c, line=317, thread=139918492813024,
number=8, address=02536E70
[14:57:43] 3595 file=bn_lib.c, line=317, thread=139918492813024,
number=136, address=02526380
[14:57:48] 4526 file=bn_lib.c, line=283, thread=139918492813024,
number=24, address=02532790
[14:57:48] 4910 file=bn_lib.c, line=283, thread=139918492813024,
number=24, address=02536DE0
[14:57:48] 4815 file=bn_lib.c, line=317, thread=139918492813024,
number=8, address=0252E850
[14:57:43] 4171 file=bn_lib.c, line=317, thread=139918492813024,
number=136, address=025316D0
[14:57:43] 3885 file=bn_lib.c, line=317, thread=139918492813024,
number=8, address=025306D0
[14:57:43] 3463 file=bn_lib.c, line=317, thread=139918492813024,
number=264, address=0252EFF0
[14:57:48] 5161 file=bn_lib.c, line=317, thread=139918492813024,
number=264, address=02538400
[14:57:43] 3884 file=bn_lib.c, line=283, thread=139918492813024,
number=24, address=02530640
[14:57:48] 4749 file=bn_mont.c, line=325, thread=139918492813024,
number=104, address=02526200
[14:57:43] 4267 file=bn_lib.c, line=317, thread=139918492813024,
number=136, address=02531DE0
[14:57:48] 5065 file=bn_lib.c, line=317, thread=139918492813024,
number=264, address=02537C90
[14:57:43] 3819 file=bn_mont.c, line=325, thread=139918492813024,
number=104, address=025251D0
[14:57:48] 4719 file=bn_lib.c, line=317, thread=139918492813024,
number=8, address=0252EF00
[14:57:48] 5007 file=bn_lib.c, line=317, thread=139918492813024,
number=8, address=02537460
[14:57:43] 3787 file=bn_lib.c, line=317, thread=139918492813024,
number=136, address=0252FED0
[14:57:43] 4266 file=bn_lib.c, line=283, thread=139918492813024,
number=24, address=02531D50
[14:57:43] 3559 file=bn_lib.c, line=317, thread=139918492813024,
number=264, address=0252F6A0
[14:57:48] 5388 file=bn_lib.c, line=283, thread=139918492813024,
number=24, address=02537BD0
[14:57:48] 4718 file=bn_lib.c, line=283, thread=139918492813024,
number=24, address=0252EE70
[14:57:43] 4299 file=bn_mont.c, line=325, thread=139918492813024,
number=104, address=02531520
[14:57:48] 5006 file=bn_lib.c, line=283, thread=139918492813024,
number=24, address=025373D0
[14:57:48] 5293 file=bn_lib.c, line=317, thread=139918492813024,
number=136, address=02536BA0
[14:57:48] 5133 file=bn_mont.c, line=325, thread=139918492813024,
number=104, address=02531490
[14:57:43] 3979 file=bn_lib.c, line=317, thread=139918492813024,
number=136, address=02530C30
[14:57:43] 4011 file=bn_mont.c, line=325, thread=139918492813024,
number=104, address=0252F580
[14:57:48] 5102 file=bn_lib.c, line=283, thread=139918492813024,
number=24, address=025372E0
[14:57:48] 5103 file=bn_lib.c, line=317, thread=139918492813024,
number=8, address=02537A80
[14:57:43] 3978 file=bn_lib.c, line=283, thread=139918492813024,
number=24, address=02530BA0
[14:57:43] 3725 file=bn_lib.c, line=317, thread=139918492813024,
number=128, address=0252F4F0
[14:57:43] 4135 file=bn_lib.c, line=317, thread=139918492813024,
number=264, address=02531B70
[14:57:48] 4777 file=bn_lib.c, line=317, thread=139918492813024,
number=264, address=02536A20
[14:57:43] 4301 file=bn_lib.c, line=317, thread=139918492813024,
number=128, address=02531370
[14:57:48] 5390 file=bn_lib.c, line=283, thread=139918492813024,
number=24, address=025388A0
[14:57:48] 4527 file=bn_lib.c, line=317, thread=139918492813024,
number=8, address=0252DC60
[14:57:48] 4585 file=bn_lib.c, line=317, thread=139918492813024,
number=264, address=0252E400
[14:57:48] 4681 file=bn_lib.c, line=317, thread=139918492813024,
number=264, address=0252EB40
[14:57:43] 3403 file=bn_lib.c, line=317, thread=139918492813024,
number=136, address=025265E0
[14:57:53] 7771 file=stack.c, line=125, thread=139918492813024,
number=32, address=0252EB10
[14:57:43] 4170 file=bn_lib.c, line=283, thread=139918492813024,
number=24, address=0252FAE0
[14:57:43] 0 file=eng_lib.c, line=68, thread=139918492813024,
number=216, address=0247BDF0
[14:57:48] 4873 file=bn_lib.c, line=317, thread=139918492813024,
number=264, address=02537010
[14:57:48] 5423 file=bn_lib.c, line=317, thread=139918492813024,
number=128, address=02538EC0
[14:57:43] 3402 file=bn_lib.c, line=283, thread=139918492813024,
number=24, address=02526550
[14:57:43] 3847 file=bn_lib.c, line=317, thread=139918492813024,
number=264, address=02530900
[14:57:43] 4205 file=bn_lib.c, line=317, thread=139918492813024,
number=128, address=025318D0
[14:57:43] 3594 file=bn_lib.c, line=283, thread=139918492813024,
number=24, address=0252F220
[14:57:43] 3499 file=bn_lib.c, line=317, thread=139918492813024,
number=136, address=02525490
[14:57:48] 5100 file=bn_lib.c, line=283, thread=139918492813024,
number=24, address=02536F50
[14:57:48] 4847 file=bn_lib.c, line=317, thread=139918492813024,
number=128, address=0252E9C0
[14:57:53] 7764 file=lhash.c, line=119, thread=139918492813024,
number=176, address=0248DE40
[14:57:43] 3693 file=bn_lib.c, line=317, thread=139918492813024,
number=8, address=0252F990
[14:57:43] 4173 file=bn_lib.c, line=317, thread=139918492813024,
number=8, address=02531840
[14:57:43] 3498 file=bn_lib.c, line=283, thread=139918492813024,
number=24, address=02525400
[14:57:48] 5004 file=bn_lib.c, line=283, thread=139918492813024,
number=24, address=0252E930
[14:57:43] 4172 file=bn_lib.c, line=283, thread=139918492813024,
number=24, address=025317B0
[14:57:43] 3692 file=bn_lib.c, line=283, thread=139918492813024,
number=24, address=0252F900
[14:57:48] 4845 file=bn_mont.c, line=325, thread=139918492813024,
number=104, address=0252F100
[14:57:48] 4621 file=bn_lib.c, line=317, thread=139918492813024,
number=136, address=0252E100
[14:57:43] 3943 file=bn_lib.c, line=317, thread=139918492813024,
number=264, address=02530F80
[14:57:48] 5391 file=bn_lib.c, line=317, thread=139918492813024,
number=8, address=02538CE0
[14:57:48] 4620 file=bn_lib.c, line=283, thread=139918492813024,
number=24, address=0252E070
[14:57:48] 5039 file=bn_lib.c, line=317, thread=139918492813024,
number=128, address=025375A0
[14:57:48] 5135 file=bn_lib.c, line=317, thread=139918492813024,
number=128, address=02537DA0
[14:57:43] 3629 file=bn_lib.c, line=317, thread=139918492813024,
number=128, address=025262B0
[14:57:48] 4429 file=bn_lib.c, line=317, thread=139918492813024,
number=136, address=02527250
[14:57:48] 4909 file=bn_lib.c, line=317, thread=139918492813024,
number=136, address=02536CE0
[14:57:48] 4428 file=bn_lib.c, line=283, thread=139918492813024,
number=24, address=025271C0
[14:57:48] 4908 file=bn_lib.c, line=283, thread=139918492813024,
number=24, address=02536C50
[14:57:43] 3723 file=bn_mont.c, line=325, thread=139918492813024,
number=104, address=02525160
[14:57:53] 7768 file=stack.c, line=127, thread=139918492813024,
number=32, address=024619B0
[14:57:43] 3883 file=bn_lib.c, line=317, thread=139918492813024,
number=136, address=02530540
[14:57:48] 4814 file=bn_lib.c, line=283, thread=139918492813024,
number=24, address=0252DE90
[14:57:48] 4559 file=bn_lib.c, line=317, thread=139918492813024,
number=128, address=025324E0
[14:57:43] 3341 file=bn_lib.c, line=317, thread=139918492813024,
number=128, address=025258A0
[14:57:43] 3882 file=bn_lib.c, line=283, thread=139918492813024,
number=24, address=025304B0
[14:57:48] 4812 file=bn_lib.c, line=283, thread=139918492813024,
number=24, address=0252DE00
[14:57:48] 4524 file=bn_lib.c, line=283, thread=139918492813024,
number=24, address=02525040
[14:57:53] 7766 file=ex_data.c, line=308, thread=139918492813024,
number=24, address=0247CF60
[14:57:48] 4716 file=bn_lib.c, line=283, thread=139918492813024,
number=24, address=0252ED70
[14:57:43] 3917 file=bn_lib.c, line=317, thread=139918492813024,
number=128, address=0252FD70
[14:57:43] 3915 file=bn_mont.c, line=325, thread=139918492813024,
number=104, address=025267E0
[14:57:48] 4751 file=bn_lib.c, line=317, thread=139918492813024,
number=128, address=0252E510
[14:57:48] 5257 file=bn_lib.c, line=317, thread=139918492813024,
number=264, address=02538920
[14:57:43] 3339 file=bn_mont.c, line=325, thread=139918492813024,
number=104, address=02525FB0
[14:57:48] 4431 file=bn_lib.c, line=317, thread=139918492813024,
number=8, address=02532390
[14:57:48] 5199 file=bn_lib.c, line=317, thread=139918492813024,
number=8, address=025380C0
[14:57:48] 5101 file=bn_lib.c, line=317, thread=139918492813024,
number=136, address=025371E0
[14:57:48] 5353 file=bn_lib.c, line=317, thread=139918492813024,
number=264, address=02539090
[14:57:48] 5198 file=bn_lib.c, line=283, thread=139918492813024,
number=24, address=02538030
[14:57:43] 3437 file=bn_lib.c, line=317, thread=139918492813024,
number=128, address=02526EC0
[14:57:43] 4231 file=bn_lib.c, line=317, thread=139918492813024,
number=264, address=02532210
[14:57:43] 3751 file=bn_lib.c, line=317, thread=139918492813024,
number=264, address=02530210
[14:57:43] 3821 file=bn_lib.c, line=317, thread=139918492813024,
number=128, address=02530180
[14:57:48] 4717 file=bn_lib.c, line=317, thread=139918492813024,
number=136, address=025300F0
[14:57:43] 4075 file=bn_lib.c, line=317, thread=139918492813024,
number=136, address=02531090
[14:57:43] 4203 file=bn_mont.c, line=325, thread=139918492813024,
number=104, address=0252F1B0
[14:57:43] 3789 file=bn_lib.c, line=317, thread=139918492813024,
number=8, address=02530060
[14:57:48] 4463 file=bn_lib.c, line=317, thread=139918492813024,
number=128, address=02532000
[14:57:43] 4269 file=bn_lib.c, line=317, thread=139918492813024,
number=8, address=02531F70
[14:57:53] 7770 file=ex_data.c, line=308, thread=139918492813024,
number=24, address=02526360
[14:57:43] 3786 file=bn_lib.c, line=283, thread=139918492813024,
number=24, address=02525330
[14:57:43] 4268 file=bn_lib.c, line=283, thread=139918492813024,
number=24, address=02531EE0
[14:57:43] 3788 file=bn_lib.c, line=283, thread=139918492813024,
number=24, address=0252FFD0
[14:57:43] 4013 file=bn_lib.c, line=317, thread=139918492813024,
number=128, address=02530E50
[14:57:48] 5421 file=bn_mont.c, line=325, thread=139918492813024,
number=104, address=02538B50
[14:57:43] 3981 file=bn_lib.c, line=317, thread=139918492813024,
number=8, address=02530DC0
[14:57:48] 4489 file=bn_lib.c, line=317, thread=139918492813024,
number=264, address=0252DF10
[14:57:53] 7765 file=lhash.c, line=121, thread=139918492813024,
number=128, address=02538AC0
[14:57:43] 3980 file=bn_lib.c, line=283, thread=139918492813024,
number=24, address=02530D30
[14:57:43] 3309 file=bn_lib.c, line=317, thread=139918492813024,
number=8, address=02526120
[14:57:43] 3627 file=bn_mont.c, line=325, thread=139918492813024,
number=104, address=025250F0
[14:57:48] 5327 file=bn_lib.c, line=317, thread=139918492813024,
number=128, address=02538A30
[14:57:48] 5290 file=rsa_lib.c, line=139, thread=139918492813024,
number=168, address=02537B80
[14:57:43] 3308 file=bn_lib.c, line=283, thread=139918492813024,
number=24, address=02526090
16384 bytes leaked in 168 chunks
Kind regards,
Roman Matzutt
smime.p7s
Description: S/MIME Cryptographic Signature
