Native crash at /system/lib/libc.so

[Markus Wiederkehr]

I got a few reports about native crashes during the last couple of weeks.

I do not know if they are related to AdMob so this is just a question if anyone else has this problem, too.

Usually I ignore them since there is not much I can do anyway, but one of the reports had the following information in it:

Build fingerprint: 'samsung/lt03wifiue/lt03wifiue:4.4.2/KOT49H/P600UEUCOB1:user/release-keys'
Revision: '4'
pid: 8698, tid: 8845, name: AdWorker(Defaul >>> com.andoku.two.free <<<
signal 11 (SIGSEGV), code 1 (SEGV_MAPERR), fault addr deadbaad
Abort message: 'invalid address or address of corrupt block 0x80039c28 passed to dlfree'
r0 00000000 r1 4009e8e6 r2 deadbaad r3 400a247d
r4 80039c28 r5 400ad180 r6 4004c000 r7 80039c30
r8 00000001 r9 7cfe1c0d sl 00000001 fp 7cfe1c0f
ip 00000001 sp 79b169c8 lr 4006f7cf pc 4006f7d0 cpsr 600f0030
d0 2064657373617064 d1 6f2073736572646c
d2 707572726f632066 d3 206b636f6c622072
d4 8000000000000000 d5 0000000000000000
d6 ffffffffffffffff d7 0000040000000003
d8 0000000000000000 d9 0000000000000000
d10 0000000000000000 d11 0000000000000000
d12 0000000000000000 d13 0000000000000000
d14 0000000000000000 d15 0000000000000000
d16 4040000000000000 d17 4040000000000000
d18 0000000000000033 d19 0000000008000000
d20 0000000000ffffff d21 000000000000000b
d22 0000000009000000 d23 000000000000000c
d24 ffffffffffffffff d25 ffffffffffffffff
d26 ffffffffffffffff d27 ffffffffffffffff
d28 ffffffffffffffff d29 0000000000000004
d30 0000007e41e01000 d31 0000007e41e01009
scr 60000010

backtrace:
#00 pc 000117d0 /system/lib/libc.so (dlfree+1191)
#01 pc 0000dd1f /system/lib/libc.so (free+10)
#02 pc 00082371 /system/lib/libcrypto.so (CRYPTO_free+24)
#03 pc 0002ab05 /system/lib/libssl.so (ssl_parse_serverhello_tlsext+244)
#04 pc 00016b35 /system/lib/libssl.so (ssl3_get_server_hello+924)
#05 pc 0001962b /system/lib/libssl.so (ssl3_connect+642)
#06 pc 00024fcd /system/lib/libssl.so (SSL_do_handshake+72)
#07 pc 0000ae61 /system/lib/libjavacrypto.so
#08 pc 0001ea4c /system/lib/libdvm.so (dvmPlatformInvoke+112)
#09 pc 0004f4a3 /system/lib/libdvm.so (dvmCallJNIMethod(unsigned int const*, JValue*, Method const*, Thread*)+398)
#10 pc 00027e60 /system/lib/libdvm.so
#11 pc 0002ee9c /system/lib/libdvm.so (dvmMterpStd(Thread*)+76)
#12 pc 0002c500 /system/lib/libdvm.so (dvmInterpret(Thread*, Method const*, JValue*)+184)
#13 pc 00061af1 /system/lib/libdvm.so (dvmCallMethodV(Thread*, Method const*, Object*, bool, JValue*, std::__va_list)+336)
#14 pc 00061b15 /system/lib/libdvm.so (dvmCallMethod(Thread*, Method const*, Object*, JValue*, ...)+20)
#15 pc 00056803 /system/lib/libdvm.so
#16 pc 0000d280 /system/lib/libc.so (__thread_entry+72)
#17 pc 0000d418 /system/lib/libc.so (pthread_create+240)

AdWorker sounds suspicious.

Best regards,
Markus

[Vu Chau (MobileAds SDK Team)]

Hi Markus,

Thanks for letting us know about this crash.  I personally haven't seen this crash before.  But like always, if you have more information, such as steps, code snippets, SDK version, and affected Android versions, feel free to relay to us.  We will want to be able to reproduce the crash in order to troubleshoot it.

Cheers,

Vu Chau

Mobile Ads SDK Team