SurfaceFlinger crash, how to debug it?

gmmo — Mon, 06 Nov 2017 19:44:21 GMT

Hello, I am working on an embedded system that uses as iMX6Q/D on it main board. The chip runs Android OS Linux version 3.0.35 (JellyBean ), but under certain soak testing conditions it crashes on SurfaceFlinger and gives me the tomstone crash below.

Our device is a medical device and does not use any intense graphics. In fact we even disabled the hardware acceleration, but we sill keep getting these hard crashes.

anyone has seen this and how did you get it resolved?

thank you!

Revision: '405522'
pid: 2239, tid: 2332, name: SurfaceFlinger >>> /system/bin/surfaceflinger <<<
signal 11 (SIGSEGV), code 1 (SEGV_MAPERR), fault addr 5f776e84
    r0 40926bf0 r1 4018f838 r2 ffffffff r3 5f776e64
    r4 409c3390 r5 409c33f8 r6 000000ea r7 000000ea
    r8 409c3460 r9 00000001 sl 40f38b7c fp 40f39610
    ip 00000004 sp 405caa98 lr 40028531 pc 402e3d66 cpsr 000f0030
    d0 000000ea00000000 d1 00000110000001e0
    d2 000000003f000000 d3 3f00000000000000
    d4 43f04000000001e0 d5 0000000000000026
    d6 421800003f800000 d7 0000000000000000
    d8 0000000000000000 d9 0000000000000000
    d10 0000000000000000 d11 0000000000000000
    d12 0000000000000000 d13 0000000000000000
    d14 0000000000000000 d15 0000000000000000
    d16 0000000008010001 d17 0000000000000000
    d18 00000000005f3ba8 d19 bfdffffffd0c5e81
    d20 3f811110896efbb2 d21 3f693f97a59339e5
    d22 3ef99342e0ee5069 d23 3fa55553e1053a42
    d24 3f266d602e8c24ba d25 3f5c85edc9466400
    d26 3fa55b4c4fcda895 d27 bf56bad9fb87f217
    d28 3ec96c90a7bb3a74 d29 bfce28c6a22168c0
    d30 3dee41e5ae2af99c d31 400921fb54442d18
    scr 60000010

backtrace:
    #00 pc 00025d66 /system/lib/libgui.so (android::Surface::hook_queueBuffer(ANativeWindow*, ANativeWindowBuffer*, int)+7)
    #01 pc 0000e52f /system/lib/egl/libGLES_android.so
    #02 pc 0000d623 /system/lib/egl/libGLES_android.so (eglPostBufferVIV(void*)+70)
    #03 pc 000037dd /system/lib/hw/hwcomposer_viv.imx6.so
    #04 pc 00001bd9 /system/lib/hw/hwcomposer.imx6.so
    #05 pc 0002af79 /system/lib/libsurfaceflinger.so (android::HWComposer::commit()+112)
    #06 pc 000252f7 /system/lib/libsurfaceflinger.so (android::SurfaceFlinger::postFramebuffer()+90)
    #07 pc 0002549d /system/lib/libsurfaceflinger.so (android::SurfaceFlinger::doComposition()+156)
    #08 pc 000256bd /system/lib/libsurfaceflinger.so (android::SurfaceFlinger::handleMessageRefresh()+48)
    #09 pc 0002611d /system/lib/libsurfaceflinger.so (android::SurfaceFlinger::onMessageReceived(int)+64)
    #10 pc 000150fd /system/lib/libutils.so (android::Looper::pollInner(int)+384)
    #11 pc 000151fd /system/lib/libutils.so (android::Looper::pollOnce(int, int*, int*, void**)+92)
    #12 pc 00021c11 /system/lib/libsurfaceflinger.so (android::MessageQueue::waitMessage()+36)
    #13 pc 0002299d /system/lib/libsurfaceflinger.so (android::SurfaceFlinger::threadLoop()+2)
    #14 pc 00011a8d /system/lib/libutils.so (android::Thread::_threadLoop(void*)+216)
    #15 pc 00011581 /system/lib/libutils.so
    #16 pc 0000ca78 /system/lib/libc.so (__thread_entry+72)
    #17 pc 0000cbf4 /system/lib/libc.so (pthread_create+208)
    #18 pc 0001aa9c [heap]

stack:
         405caa58 404af7a0 /system/lib/libGAL.so
         405caa5c 00000000
         405caa60 0000005b
         405caa64 40f39904 [heap]
         405caa68 00000002
         405caa6c 40f39790 [heap]
         405caa70 40eef308
         405caa74 40cbb8e8
         405caa78 4018d004 /system/lib/hw/gralloc.imx6.so
         405caa7c 4018f8b8
         405caa80 ffffffff
         405caa84 4018f8b8
         405caa88 409c33f8
         405caa8c 4018b68b /system/lib/hw/gralloc.imx6.so (gralloc_unlock(gralloc_module_t const*, native_handle const*)+8)
         405caa90 df0027ad
         405caa94 00000000
    #00 405caa98 402e3d5f /system/lib/libgui.so (android::Surface::hook_queueBuffer(ANativeWindow*, ANativeWindowBuffer*, int))
         405caa9c 40028531 /system/lib/egl/libGLES_android.so
    #01 405caaa0 00000006

Re: SurfaceFlinger crash, how to debug it?

igorpadykov — Tue, 07 Nov 2017 07:55:58 GMT

Hi Gustavo

from log there are reference to hwcomposer_viv.imx6.so, please check

imx6DL dual display - hwcomposer_viv.imx6.so crash

Best regards
igor
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Re: SurfaceFlinger crash, how to debug it?

gmmo — Tue, 07 Nov 2017 18:11:09 GMT

igorpadykov‌ Where is the source code for the hwcomposer patch? I can't include just .so; I need to build it.

thank you!

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