crash occurs when SDL_Thread call a pthread_exit at line:48@SDL_systhread.c

[faywong]

---

Build fingerprint: 'motorola/XT910_cn/umts_spyder:4.1.2/6.7.2_GC-381/398:user/release-keys'
pid: 16935, tid: 16962, name: GLThread >>> org.ffmpeg.ffplayer <<<
signal 11 (SIGSEGV), code 1 (SEGV_MAPERR), fault addr deadd00d
tls: 5570af00

r0 00000000  r1 4081265c  r2 deadd00d  r3 000100ff
r4 40812656  r5 0000020c  r6 40138460  r7 00000001
r8 407d7a2d  r9 40138454  sl 516e18c8  fp 00000001
ip 0000bf00  sp 5570ac20  lr 407cb00f  pc 407cb01e  cpsr 80000030
d0  74726f6261204d75  d1  6977206465746973
d2  6568636174656465  d3  746e756f63282072
d4  3ff0000000000000  d5  0000000000000000
d6  3ff0000000000000  d7  3ff0000000000000
d8  7ff8000000000000  d9  412e848000000000
d10 0000000000000000  d11 0000000000000000
d12 0000000000000000  d13 0000000000000000
d14 0000000000000000  d15 0000000000000000
d16 3ff0000000000000  d17 7e37e43c8800759c
d18 3f964134a0a972e0  d19 c0256370281281e3
d20 c02e000000000000  d21 bfc2deb5a037d801
d22 3fcc7423e07373dd  d23 3fd24a8cf322e13f
d24 3fd99b51fc12342e  d25 3fe556706e5a1352
d26 3fd55555518f264d  d27 3fdb6db6db6fabff
d28 3fe3333333333303  d29 0000000000000000
d30 4000000000000000  d31 0000000000000000
scr 28000010

backtrace:
#00 pc 0004601e /system/lib/libdvm.so (dvmAbort+113)
#1 pc 00012a70 /system/lib/libc.so (pthread_exit+320)
#2 pc 0003afac /data/data/org.ffmpeg.ffplayer/lib/libsdl-1.2.so
#3 pc 00012c10 /system/lib/libc.so (__thread_entry+48)
#4 pc 00012368 /system/lib/libc.so (pthread_create+172)

stack:
5570abe0 0000012e
5570abe4 40119f51 /system/lib/libc.so (__system_property_find+56)
5570abe8 5570ac20
5570abec 40119f93 /system/lib/libc.so (system_property_read+46)
5570abf0 00000000
5570abf4 40812656 /system/lib/libdvm.so
5570abf8 5570ac20
5570abfc 40812656 /system/lib/libdvm.so
5570ac00 00000001
5570ac04 407d7a2d /system/lib/libdvm.so
5570ac08 40138454
5570ac0c 400c0573 /system/lib/libcutils.so (property_get+10)
5570ac10 40812656 /system/lib/libdvm.so
5570ac14 0000020c
5570ac18 df0027ad
5570ac1c 00000000
#00 5570ac20 72657375
5570ac24 5132bf00
5570ac28 00000001
5570ac2c 407ac424 /system/lib/libdvm.so
5570ac30 000334fa
5570ac34 516e18c8
5570ac38 4082bc84 /system/lib/libdvm.so
5570ac3c 4c87f4e0 /dev/ashmem/dalvik-LinearAlloc (deleted)
5570ac40 00000000
5570ac44 5570ac64
5570ac48 5570ad28
5570ac4c 00000000
5570ac50 00000001
5570ac54 407b0d2c /system/lib/libdvm.so (dvmInterpret(Thread, Method const, JValue*)+184)
5570ac58 00001000
5570ac5c 51880680
........ ........
#1 5570ae90 40138454
5570ae94 40138450
5570ae98 00000002
5570ae9c 51e00ee0
5570aea0 5570af00
5570aea4 00036a58
5570aea8 00000000
5570aeac 00000000
5570aeb0 5560b000
5570aeb4 00100000
5570aeb8 00000078
5570aebc 50fdef9c /data/data/org.ffmpeg.ffplayer/lib/libsdl-1.2.so
5570aec0 00100000
5570aec4 5570af00
5570aec8 50fdef9c /data/data/org.ffmpeg.ffplayer/lib/libsdl-1.2.so
5570aecc 50ee2208

[faywong]

The related source code: line 48 of sdl-1.2/src/thread/pthread/SDL_systhread.c:

 43 
 44 
 45 static void *RunThread(void *data)
 46 {
 47         SDL_RunThread(data);
 48         pthread_exit((void*)0);
 49         return((void *)0);              /* Prevent compiler warning */
 50 }
 51 
 52 int SDL_SYS_CreateThread(SDL_Thread *thread, void *args)
 53 {
 54         pthread_attr_t type;
 55 
 56         /* Set the thread attributes */
 57         if ( pthread_attr_init(&type) != 0 ) {
 58                 SDL_SetError("Couldn't initialize pthread attributes");
 59                 return(-1);
 60         }
 61         pthread_attr_setdetachstate(&type, PTHREAD_CREATE_JOINABLE);
 62 
 63         /* Create the thread and go! */
 64         if ( pthread_create(&thread->handle, &type, RunThread, args) != 0 ) {
 65                 SDL_SetError("Not enough resources to create thread");
 66                 return(-1);
 67         }
 68 
 69 #ifdef __RISCOS__
 70         if (riscos_using_threads == 0) {
 71                 riscos_using_threads = 1;
 72                 riscos_main_thread = SDL_ThreadID();
 73         }
 74 #endif