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What Is SSL Gsoap Memory Leak And How To Fix It?

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    My gSoap server is losing memory on every request if SSL is enabled.
    If SSL is indeed disabled, there will be no leaks. About 10,000 people are currently on the run, depending on demand.
    Since this server will handle tens of thousands of requests on every special day, this is a problem for us.
    Rebooting the server is not really an option

    To find out if the problem was in my code or in gSoap, I compiled the SSL code try in gsoap-2.7 / soapcpp2 / samples / ssl and wrote a simple script that sslclient runs 1000 times. The same RAM leak that I encountered on my server is happening in the trackcode.

    I used DTrace to find the PID on the moisture source. DTrace reported many small spills, all due to Soap_ssl_accept.DTrace

    Sample output will be shown after your version and build information

    Prstat source will be displayed after DTrace output.
    The prstat output clearly shows any memory leak.

    Does it hurt?
    Is there something wrong with the structured code?
    Is there a workaround for this?
    Was it usedequal in later versions?

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    OpenSSL:
    bash version of openssl for $ 3.00
    OpenSSL 0.9.6b Jul 3, 2001
    (Yes, we know this is an older version of SSL, but this is not yet another update at this time.)

    gsoap memory leak ssl

    Export CFLAGS = “- I $ OPENSSL_HOME / include -DWITH_DOM -D_PTHREADS -dwith_openssl -D_REENTRANT -D_64BIT -mt -features = no% extinl -xtarget = ultra -xarch = v9 -errtags hi -x32 = picdevexport CXXFLAGS = “$ CFLAGS”
    export CPPFLAGS = “$ CFLAGS”
    export LIBS = “- L $ OPENSSL_HOME / lib -lssl -lcrypto”

    ———
    Ptr = 0x100270ab0 size = 144
    libc.so.1`malloc + 0x78
    sslserver`CRYPTO_malloc + 0x5c
    sslserver`bn_expand2 + 0xa0
    sslserver`BN_from_montgomery + 0xc8
    sslserver`BN_mod_mul_montgomery + 0x84
    sslserver`BN_mod_exp_mont + 0x274
    sslserver`RSA_eay_mod_exp + 0x23c
    sslserver`RSA_eay_private_encrypt + 0x27c
    sslserver`RSA_sign + 0x94

    The problem is the prstat listing of the SSL server product line fanbase.
    The prstat measurements were taken even though the sslclient process was terminated 2000 times by the script.

    bash- $ 3.00 -c prstat -p 12656 3
    PID USER NAME SIZE RSS STATUS PLEASURE PROCESS CPU / NLWP
    12656 Glen 3496K 2448K sleeping fifty nine 0 0:00:00 0.0% sslserver / 1
    Total: 1 process, first LWPS, medium: nakedruzka 5.55, 5.64, 5.66
    PID USER NAME SIZE RSS STATUS PLEASURE PROCESS CPU / NLWP
    12656 Glen 3496K 2448K Nap 59 0 4 0: 00: 00.0% sslserver / 1
    Total: 1 process, 1 thread per second, revenues: download 5.41, 5.61, 5.65
    PID USER NAME SIZE RSS STATUS PLEASURE PROCESS CPU / NLWP
    12656 glen 3936K 3072K cpu2 22 0 0:00:00 0.6% sslserver / 1
    Total: 1 process, Lwps, 1 press, average values: 5.30, 5.59, 5.64
    PID USER NAME SIZE RSS STATUS PLEASURE PROCESS CPU / NLWP
    12656 Glen 3104K 3968k lit 22 2 0:00:01 1.1% sslserver / 1
    Total: specific process, Lwps, 1 download result: 5.25, 5.57, 5.63
    PID USER NAME SIZE RSS STATUS PLEASURE PROCESS CPU / NLWP
    12656 glen 4000K 3128K cpu3 32 nothing 0:00:01 1.6% sslserver / 1
    Total: specific processes, lwps, 1 download income: 5.21, 5.57, 5. USERNAME 63
    pid SIZE RSS STATUS PRICE NICE TIME PROCESS CPU / NLWP
    12656 Glen 4032K 3144K Lie 22 Zero 0:00:02 2.0% sslserver / 1
    Total: 10 processes, 1 Lwps, on average: alarm 5.21, 5.56, 5.63
    PID USER NAME SIZE RSS STATUS PLEASURE PROCESS CPU / NLWP
    12656 Glen 4048K 3168K idle twenty-two 2 0:00:03 2.4% sslserver / 2
    Total: 1 tactical, 2 Lwps, medium: load 5.23, 5.56, 5.63
    PID USER NAME SIZE RSS STATUSI HAVE A PLEASANT TIME CPU / NLWP PROCESS
    12656 Glen 4080K 3216K Wait 4 0 0:00:03 2.7% sslserver / 1
    Total: process, determined 1 Lwps per person, average loads: 5.25, 5.56, 5.63
    PID USER NAME SIZE RSS STATUS PRI NICE CPU Time PROCESS / NLWP
    12656 Glen 4112K 3248K idle 44 0 0:00:04 2.9% sslserver / 1
    Total: 1 process, you, Lwps, average: 5.25, 5.56, 5.62 downloads
    Username SIZE PID RSS STATUS PRICE NICE TIME PROCESS CPU / NLWP
    12656 Glen 4128K 3264K controls 20 0 0:00:04 3.1% sslserver / 2
    Total: process, stage 1, two Lwps, average loads: 5.26, 5.56, 5.62
    PID USER NAME SIZE RSS STATUS PLEASURE PROCESS CPU / NLWP
    12656 Glen 4160K 3288K Waiting 35 0 0:00:05 3.2% sslserver / 1
    Total: 1 process, unique LWPS, 5 average downloads: 0.30, 5.56, 5.63
    PID USER NAME SIZE RSS STATE BEAUTIFUL AT TIME CPU / NLWP PROCESS
    12656 Glen 4192K 3304K start twenty two 0 0:00:06 3.4% sslserver / 1
    Total: process, 1 Lwps, average load: 5.41, 5.58, 5.63
    PID USER NAME SIZE RSS STATUS PLEASURE PROCESS CPU / NLWP
    12656 Glen 4208K 3328K Waiting 35 0 0:00:06 3.4% sslserver / 1
    Total: process, 1 single Lwps, average loads: 5.52, 5.60, 5.64
    PID USER NAME RSS SIZE STATUS SET TIME CPU / NLWP PROCESS
    12656 Glen 4240K 3336K Sleep well 12 0 0:00:07 3.5% sslserver / 1
    Total: 1 process, 1 Lwps, income: download 5.62, 5.62, 5.65
    PID USER NAME SIZE RSS STATUS PLEASURE PROCESS CPU / NLWP
    12656 Glen 4272K 3344K continuous sleep 31 9 0:00:07 3.7% sslserver / 1
    Total: process, 11 Lwps, download proceeds: 5.67, 5.63, 5.65
    PID USER NAME SIZE RSS STATUS PRICE NICE TIME PROCESS / CPU NLWP
    12656 Glen 4288K 3360K in bed 22 null 0:00:08 3.9% sslserver / 1
    Total: one process, 1 l / s, on average: load 5.69, 5.64, 5.65
    PID USER NAME SIZE RSS STATUS PLEASURE PROCESS CPU / NLWP
    12656 Glen 4336K 3408K sleep fladskrrrm nothing 0:00:09 4.2% sslserver / 1
    Total: 1 measurement, 1 l / s, 5 average loads: 0.64, 5.63, 5.65
    PID USER NAME SIZE STATE rss PLEASURE PROCESS CPU / NLWP
    12656 Glen 4368K 3440K sleep 42 tommers skrm 0 0:00:10 4.3% sslserver / 1
    Total: 1 process, 6 liters per second, 5 average loads: 0.58, 5.61, 5.64
    PID USER NAME SIZE RSS STATE BEAUTIFUL AT TIME CPU / NLWP PROCESS
    12656 Glen 4400K 3480K sleeping fifty-two 0 0:00:10 4.4% sslserver / 1
    Total: process, 10 l / s, average loads: 5.49, 5.60, 5.64
    PID USER NAME SIZE RSS STATUS PLEASURE PROCESS CPU / NLWP
    12656 Glen4432K 3544K sleep well 52 0 0:00:11 4.5% sslserver / 1
    Total: 1 process, 1 Lwps, income: download 5.43, 5.58, 5.63
    PID USER NAME SIZE RSS STATUS PLEASURE PROCESS CPU / NLWP
    12656 Glen 4464K 3576K REM sleep 53 2 0:00:12 4.7% sslserver / 1
    Total: process, 11 Lwps, download proceeds: 5.36, 5.57, 5.63
    PID USER NAME SIZE RSS STATUS PLEASURE PROCESS CPU / NLWP
    12656 Glen 4496K 3608K before sleep 52 null 0:00:12 4.8% sslserver / 1
    Total: specific processes, 1 l / s, average: 5.30, 5.55, 5.62 installations
    PID USER NAME SIZE RSS STATUS PLEASURE PROCESS CPU / NLWP
    12656 Glen 4528K 3640K sleeping fifty three 3 0:00:13 4.8% sslserver / 1
    Total: 1 procedure, 1 LW / s, on average: load 5.23, 5.54, 5.62
    PID USER NAME SIZE RSS STATUS PLEASURE PROCESS CPU / NLWP
    12656 Glen 4544K 3640K sleeping fifty nine 0 3 0: 00: 14.5% sslserver / 1
    Total: 1 process, step 1 lwps, on average: load 5.17, 5.52, 5.61
    PID USER NAME SIZE RSS STATUS PLEASURE PROCESS CPU / NLWP
    12656 Glen 4544K 3608K sleeping fifty nine 0 0:00:14 3.9% sslserver / 1
    Total: 1 process, only one lwps, average: 5.12, 5.51, 5.61
    downloadPID USER NAME SIZE RSS STATUS PLEASURE PROCESS CPU / NLWP
    12656 Glen 4544K 3608K Sleepingsslserver 59 0 0:00:14 3.4% sslserver / 1
    Total: process, 1 1 Lwps, average disability: 5.07, 5.49, 5.60

    gsoap memory leak ssl

     An example of dumps attached to the DTrace stack (I have a bunch of dumps, but this is a 7MB file. )

    Enjoy a faster

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