210264 2020-04-09 05:11:46 -0700 [EME][GStreamer] web-platform-tests/encrypted-media/clearkey-events-session-closed-event.https.html random crashes 2020-07-08 04:26:15 -0700 1 1 1 Unclassified WebKit WebKitGTK WebKit Nightly Build Unspecified Unspecified RESOLVED FIXED P2 Normal --- 1 cturner webkit-unassigned bugs-noreply calvaris lmoura pnormand oldest_to_newest 1639578 0 cturner 2020-04-09 05:11:46 -0700 This is crashing in a call to gcry_cipher_setctr for unknown reasons. Maybe the GCrypt library is not being correctly initialised. The initialisation rules are complex[1]. I wonder if we can use the classes in PAL::Crypto instead. The AES-CTR decrypt method looked very costly there however, making me think it might not be appropriate for real-time use cases. Testing needed. This is not reproducible in isolated test runs unfortunately, in seems threading contention triggers it. #0 SIGSEGV ?? #1 0x00007f90bccd2349 in gcry_cipher_setctr () at /lib/x86_64-linux-gnu/libgcrypt.so.20 #2 0x00007f90cf97bcd3 in WebCore::CDMProxyClearKey::cencSetCounterVector(WebCore::CDMProxyClearKey::cencDecryptContext const&) (this=0x7f905c452410, input=...) at /home/cht/igalia/sources/WebKit/Source/WebCore/platform/graphics/gstreamer/eme/CDMProxyClearKey.cpp:98 #3 0x00007f90cf97c2cf in WebCore::CDMProxyClearKey::cencDecrypt(WebCore::CDMProxyClearKey::cencDecryptContext&) (this=0x7f905c452410, input=...) at /home/cht/igalia/sources/WebKit/Source/WebCore/platform/graphics/gstreamer/eme/CDMProxyClearKey.cpp:203 #4 0x00007f90cf963b93 in decrypt(_WebKitMediaCommonEncryptionDecrypt*, _GstBuffer*, _GstBuffer*, _GstBuffer*, unsigned int, _GstBuffer*) (self=0x7f77d4011ca0, ivBuffer=0x7f77d4258c60, keyIDBuffer=0x7f77e003c5a0, buffer=0x7f9050017b40, subsampleCount=2, subsamplesBuffer=0x7f77dc26e000) at /home/cht/igalia/sources/WebKit/Source/WebCore/platform/graphics/gstreamer/eme/WebKitClearKeyDecryptorGStreamer.cpp:165 #5 0x00007f90cf9654ea in transformInPlace(_GstBaseTransform*, _GstBuffer*) (base=0x7f77d4011ca0, buffer=0x7f9050017b40) at /home/cht/igalia/sources/WebKit/Source/WebCore/platform/graphics/gstreamer/eme/WebKitCommonEncryptionDecryptorGStreamer.cpp:260 #6 0x00007f90bcc7bac7 in default_generate_output (trans=0x7f77d4011ca0, outbuf=0x7f76d5ffa5b8) at ../subprojects/gstreamer/libs/gst/base/gstbasetransform.c:2175 #7 0x00007f90bcc7b207 in gst_base_transform_chain (pad=<optimized out>, parent=0x7f77d4011ca0, buffer=<optimized out>) at ../subprojects/gstreamer/libs/gst/base/gstbasetransform.c:2333 #8 0x00007f90bcb702e2 in gst_pad_chain_data_unchecked (data=0x7f9050017b40, type=4112, pad=0x7f778835d2c0) at ../subprojects/gstreamer/gst/gstpad.c:4399 #9 0x00007f90bcb702e2 in gst_pad_push_data (pad=pad@entry=0x7f777c35eaa0, type=type@entry=4112, data=data@entry=0x7f9050017b40) at ../subprojects/gstreamer/gst/gstpad.c:4655 #10 0x00007f90bcb76da2 in gst_pad_push (pad=0x7f777c35eaa0, buffer=0x7f9050017b40) at ../subprojects/gstreamer/gst/gstpad.c:4774 #11 0x00007f90bcb702e2 in gst_pad_chain_data_unchecked (data=0x7f9050017b40, type=4112, pad=0x7f778835cbd0) at ../subprojects/gstreamer/gst/gstpad.c:4399 #12 0x00007f90bcb702e2 in gst_pad_push_data (pad=pad@entry=0x7f77dc253d30, type=type@entry=4112, data=data@entry=0x7f9050017b40) at ../subprojects/gstreamer/gst/gstpad.c:4655 #13 0x00007f90bcb76da2 in gst_pad_push (pad=pad@entry=0x7f77dc253d30, buffer=buffer@entry=0x7f9050017b40) at ../subprojects/gstreamer/gst/gstpad.c:4774 #14 0x00007f90bcb5b11b in gst_proxy_pad_chain_default (pad=<optimized out>, parent=<optimized out>, buffer=0x7f9050017b40) at ../subprojects/gstreamer/gst/gstghostpad.c:127 #15 0x00007f90bcb702e2 in gst_pad_chain_data_unchecked (data=0x7f9050017b40, type=4112, pad=0x7f77dc261750) at ../subprojects/gstreamer/gst/gstpad.c:4399 #16 0x00007f90bcb702e2 in gst_pad_push_data (pad=pad@entry=0x7f77dc1f8560, type=type@entry=4112, data=data@entry=0x7f9050017b40) at ../subprojects/gstreamer/gst/gstpad.c:4655 #17 0x00007f90bcb76da2 in gst_pad_push (pad=pad@entry=0x7f77dc1f8560, buffer=buffer@entry=0x7f9050017b40) at ../subprojects/gstreamer/gst/gstpad.c:4774 #18 0x00007f90bcb5b11b in gst_proxy_pad_chain_default (pad=<optimized out>, parent=<optimized out>, buffer=0x7f9050017b40) at ../subprojects/gstreamer/gst/gstghostpad.c:127 #19 0x00007f90cf9689ff in webkitMediaSrcChain(_GstPad*, _GstObject*, _GstBuffer*) (pad=0x7f77883333d0, parent=0x7f77dc1f8560, buffer=0x7f9050017b40) at /home/cht/igalia/sources/WebKit/Source/WebCore/platform/graphics/gstreamer/mse/WebKitMediaSourceGStreamer.cpp:250 #20 0x00007f90bcb702e2 in gst_pad_chain_data_unchecked (data=0x7f9050017b40, type=4112, pad=0x7f77883333d0) at ../subprojects/gstreamer/gst/gstpad.c:4399 #21 0x00007f90bcb702e2 in gst_pad_push_data (pad=pad@entry=0x7f772835c760, type=type@entry=4112, data=data@entry=0x7f9050017b40) at ../subprojects/gstreamer/gst/gstpad.c:4655 #22 0x00007f90bcb76da2 in gst_pad_push (pad=pad@entry=0x7f772835c760, buffer=0x7f9050017b40) at ../subprojects/gstreamer/gst/gstpad.c:4774 #23 0x00007f90bcc767fd in gst_base_src_loop (pad=0x7f772835c760) at ../subprojects/gstreamer/libs/gst/base/gstbasesrc.c:2974 #24 0x00007f90bcba4e11 in gst_task_func (task=0x7f7780265dd0) at ../subprojects/gstreamer/gst/gsttask.c:328 [1] https://www.gnupg.org/documentation/manuals/gcrypt-devel/Multi_002dThreading.html#Multi_002dThreading 1664911 1 lmoura 2020-06-21 19:09:38 -0700 This segfault also happened once for imported/w3c/web-platform-tests/encrypted-media/clearkey-mp4-playback-temporary-multikey.https.html in build 14196[1] (r263334) of the GTK Release bot. It was the first failure for this test ever, so I think we can just keep an eye on it and add it as a flaky failure to this bug if it repeats in the future. [1] https://build.webkit.org/builders/GTK%20Linux%2064-bit%20Release%20%28Tests%29/builds/14196 1666016 2 calvaris 2020-06-25 05:20:31 -0700 I tried to reproduce this bug in trunk both in release and debug, with both tests reported here and I can't reproduce it. 1669375 3 pnormand 2020-07-07 06:33:39 -0700 FWIW you could download coredumps from the bots and debug locally from there. If this crashes on Release only and not Debug it might be tricky to debug, but could still be worth a try. 1669377 4 pnormand 2020-07-07 06:37:38 -0700 For reference, as crash logs urls are not permanent: Program terminated with signal SIGSEGV, Segmentation fault. #0 0x00007f7768caa585 in _gcry_cipher_setctr (hd=hd@entry=0x0, ctr=ctr@entry=0x7f76f9efe160, ctrlen=ctrlen@entry=16) at cipher.c:1185 1185 if (ctr && ctrlen == hd->spec->blocksize) Thread 1 (Thread 0x7f76f9eff700 (LWP 88455)): #0 0x00007f7768caa585 in _gcry_cipher_setctr (hd=hd@entry=0x0, ctr=ctr@entry=0x7f76f9efe160, ctrlen=ctrlen@entry=16) at cipher.c:1185 #1 0x00007f7768c9e362 in gcry_cipher_setctr (hd=0x0, ctr=0x7f76f9efe160, ctrlen=16) at visibility.c:748 #2 0x00007f776f4ca48c in _ZN7WebCore16CDMProxyClearKey20cencSetCounterVectorERKNS0_18cencDecryptContextE () at /app/webkit/WebKitBuild/Release/lib/libwebkit2gtk-4.0.so.37 #3 0x00007f776f4ca782 in _ZN7WebCore16CDMProxyClearKey11cencDecryptERNS0_18cencDecryptContextE () at /app/webkit/WebKitBuild/Release/lib/libwebkit2gtk-4.0.so.37 #4 0x00007f776f4c07c4 in _ZL7decryptP35_WebKitMediaCommonEncryptionDecryptP10_GstBufferS2_S2_jS2_ () at /app/webkit/WebKitBuild/Release/lib/libwebkit2gtk-4.0.so.37 #5 0x00007f776f4c1dd6 in _ZL16transformInPlaceP17_GstBaseTransformP10_GstBuffer () at /app/webkit/WebKitBuild/Release/lib/libwebkit2gtk-4.0.so.37 #6 0x00007f7768c46bf6 in default_generate_output (trans=0x7f75ac016290 [WebKitMediaClearKeyDecrypt|webkitmediaclearkeydecrypt7], outbuf=0x7f76f9efe3f0) at ../libs/gst/base/gstbasetransform.c:2136 #7 0x00007f7768c462f6 in gst_base_transform_chain (pad=<optimized out>, parent=0x7f75ac016290 [WebKitMediaClearKeyDecrypt|webkitmediaclearkeydecrypt7], buffer=<optimized out>) at ../libs/gst/base/gstbasetransform.c:2294 #8 0x00007f7768b3c43f in gst_pad_chain_data_unchecked (pad=pad@entry=0x7f75980e3380 [GstPad|sink], type=type@entry=4112, data=data@entry=0x7f75980bfd80) at ../gst/gstpad.c:4327 #9 0x00007f7768b3e5a1 in gst_pad_push_data (pad=pad@entry=0x7f75980e3130 [GstPad|src], type=type@entry=4112, data=data@entry=0x7f75980bfd80) at ../gst/gstpad.c:4583 #10 0x00007f7768b45493 in gst_pad_push (pad=0x7f75980e3130 [GstPad|src], buffer=0x7f75980bfd80 [GstBuffer]) at ../gst/gstpad.c:4702 #11 0x00007f7768b3c43f in gst_pad_chain_data_unchecked (pad=pad@entry=0x7f75980e2ee0 [GstPad|sink], type=type@entry=4112, data=data@entry=0x7f75980bfd80) at ../gst/gstpad.c:4327 #12 0x00007f7768b3e5a1 in gst_pad_push_data (pad=pad@entry=0x7f75b80f6340 [GstProxyPad|proxypad201], type=type@entry=4112, data=data@entry=0x7f75980bfd80) at ../gst/gstpad.c:4583 #13 0x00007f7768b45493 in gst_pad_push (pad=pad@entry=0x7f75b80f6340 [GstProxyPad|proxypad201], buffer=buffer@entry=0x7f75980bfd80 [GstBuffer]) at ../gst/gstpad.c:4702 #14 0x00007f7768b2969b in gst_proxy_pad_chain_default (pad=<optimized out>, parent=<optimized out>, buffer=0x7f75980bfd80 [GstBuffer]) at ../gst/gstghostpad.c:127 #15 0x00007f7768b3c43f in gst_pad_chain_data_unchecked (pad=pad@entry=0x7f7620152130 [GstGhostPad|sink], type=type@entry=4112, data=data@entry=0x7f75980bfd80) at ../gst/gstpad.c:4327 #16 0x00007f7768b3e5a1 in gst_pad_push_data (pad=pad@entry=0x7f7620153530 [GstGhostPad|src_1], type=type@entry=4112, data=data@entry=0x7f75980bfd80) at ../gst/gstpad.c:4583 #17 0x00007f7768b45493 in gst_pad_push (pad=pad@entry=0x7f7620153530 [GstGhostPad|src_1], buffer=buffer@entry=0x7f75980bfd80 [GstBuffer]) at ../gst/gstpad.c:4702 #18 0x00007f7768b2969b in gst_proxy_pad_chain_default (pad=<optimized out>, parent=<optimized out>, buffer=0x7f75980bfd80 [GstBuffer]) at ../gst/gstghostpad.c:127 #19 0x00007f776f4c4a69 in _ZL19webkitMediaSrcChainP7_GstPadP10_GstObjectP10_GstBuffer () at /app/webkit/WebKitBuild/Release/lib/libwebkit2gtk-4.0.so.37 #20 0x00007f7768b3c43f in gst_pad_chain_data_unchecked (pad=pad@entry=0x7f7620009840 [GstProxyPad|proxypad200], type=type@entry=4112, data=data@entry=0x7f75980bfd80) at ../gst/gstpad.c:4327 #21 0x00007f7768b3e5a1 in gst_pad_push_data (pad=pad@entry=0x7f75b80f0a80 [GstPad|src], type=type@entry=4112, data=data@entry=0x7f75980bfd80) at ../gst/gstpad.c:4583 #22 0x00007f7768b45493 in gst_pad_push (pad=pad@entry=0x7f75b80f0a80 [GstPad|src], buffer=0x7f75980bfd80 [GstBuffer]) at ../gst/gstpad.c:4702 #23 0x00007f7768c41885 in gst_base_src_loop (pad=0x7f75b80f0a80 [GstPad|src]) at ../libs/gst/base/gstbasesrc.c:2974 #24 0x00007f7768b73be7 in gst_task_func (task=0x7f75b4314290 [GstTask|appsrc35:src]) at ../gst/gsttask.c:328 #25 0x00007f7768246004 in g_thread_pool_thread_proxy (data=<optimized out>) at ../glib/gthreadpool.c:354 #26 0x00007f7768245761 in g_thread_proxy (data=0x7f75ac007700) at ../glib/gthread.c:807 #27 0x00007f77692985e2 in start_thread (arg=<optimized out>) at pthread_create.c:479 #28 0x00007f7766f29473 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95 1669710 5 403770 calvaris 2020-07-08 03:59:38 -0700 Created attachment 403770 Patch (In reply to Xabier Rodríguez Calvar from comment #2) > I tried to reproduce this bug in trunk both in release and debug, with both > tests reported here and I can't reproduce it. I tried again, 1000 runs both tests, both debug and release. All clear. https://results.webkit.org/?suite=layout-tests&suite=layout-tests&test=imported%2Fw3c%2Fweb-platform-tests%2Fencrypted-media%2Fclearkey-mp4-playback-temporary-multikey.https.html&test=imported%2Fw3c%2Fweb-platform-tests%2Fencrypted-media%2Fclearkey-events-session-closed-event.https.html As you can see, results.webkit.org shows tests are green for a long time so I'm closing this if you agree. If you do, please r+ cq+. 1669721 6 ews-feeder 2020-07-08 04:26:13 -0700 Committed r264097: <https://trac.webkit.org/changeset/264097> All reviewed patches have been landed. Closing bug and clearing flags on attachment 403770. 403770 2020-07-08 03:59:38 -0700 2020-07-08 04:26:14 -0700 Patch Patch.patch text/plain 2776 calvaris ZGlmZiAtLWdpdCBhL0xheW91dFRlc3RzL0NoYW5nZUxvZyBiL0xheW91dFRlc3RzL0NoYW5nZUxv ZwppbmRleCAwNTMxNGQwYTg5ZGIuLjhjMjBiOGI2NjFiZSAxMDA2NDQKLS0tIGEvTGF5b3V0VGVz dHMvQ2hhbmdlTG9nCisrKyBiL0xheW91dFRlc3RzL0NoYW5nZUxvZwpAQCAtMSwzICsxLDEyIEBA CisyMDIwLTA3LTA4ICBYYWJpZXIgUm9kcmlndWV6IENhbHZhciAgPGNhbHZhcmlzQGlnYWxpYS5j b20+CisKKyAgICAgICAgW0VNRV1bR1N0cmVhbWVyXSB3ZWItcGxhdGZvcm0tdGVzdHMvZW5jcnlw dGVkLW1lZGlhL2NsZWFya2V5LWV2ZW50cy1zZXNzaW9uLWNsb3NlZC1ldmVudC5odHRwcy5odG1s IHJhbmRvbSBjcmFzaGVzCisgICAgICAgIGh0dHBzOi8vYnVncy53ZWJraXQub3JnL3Nob3dfYnVn LmNnaT9pZD0yMTAyNjQKKworICAgICAgICBSZXZpZXdlZCBieSBOT0JPRFkgKE9PUFMhKS4KKwor ICAgICAgICAqIHBsYXRmb3JtL2dsaWIvVGVzdEV4cGVjdGF0aW9uczogQ2hhbmdlIHRlc3QgZXhw ZWN0YXRpb25zLgorCiAyMDIwLTA3LTAzICBDaHJpcyBEdW1leiAgPGNkdW1lekBhcHBsZS5jb20+ CiAKICAgICAgICAgUmVzeW5jIHdlYi1wbGF0Zm9ybS10ZXN0cy9odG1sL2RvbSAmIHdlYi1wbGF0 Zm9ybS10ZXN0cy9odG1sL2luZnJhc3RydWN0dXJlIGZyb20gdXBzdHJlYW0KZGlmZiAtLWdpdCBh L0xheW91dFRlc3RzL3BsYXRmb3JtL2dsaWIvVGVzdEV4cGVjdGF0aW9ucyBiL0xheW91dFRlc3Rz L3BsYXRmb3JtL2dsaWIvVGVzdEV4cGVjdGF0aW9ucwppbmRleCA5ZTVlODUzNTQ5NmUuLjcwMzg0 YTJlMTlkMiAxMDA2NDQKLS0tIGEvTGF5b3V0VGVzdHMvcGxhdGZvcm0vZ2xpYi9UZXN0RXhwZWN0 YXRpb25zCisrKyBiL0xheW91dFRlc3RzL3BsYXRmb3JtL2dsaWIvVGVzdEV4cGVjdGF0aW9ucwpA QCAtNDY1LDcgKzQ2NSw2IEBAIHdlYmtpdC5vcmcvYi8yMTEzNzUgaW1wb3J0ZWQvdzNjL3dlYi1w bGF0Zm9ybS10ZXN0cy9lbmNyeXB0ZWQtbWVkaWEvY2xlYXJrZXktbXA0CiB3ZWJraXQub3JnL2Iv MTk4ODMwIGltcG9ydGVkL3czYy93ZWItcGxhdGZvcm0tdGVzdHMvZW5jcnlwdGVkLW1lZGlhL2Ns ZWFya2V5LW1wNC1wbGF5YmFjay10ZW1wb3JhcnkuaHR0cHMuaHRtbCBbIENyYXNoIFBhc3MgXQog d2Via2l0Lm9yZy9iLzIxMDExMyBpbXBvcnRlZC93M2Mvd2ViLXBsYXRmb3JtLXRlc3RzL2VuY3J5 cHRlZC1tZWRpYS9jbGVhcmtleS1tcDQtcmVzZXQtc3JjLWFmdGVyLXNldG1lZGlha2V5cy5odHRw cy5odG1sIFsgRmFpbHVyZSBQYXNzIF0KIHdlYmtpdC5vcmcvYi8yMTAzOTAgaW1wb3J0ZWQvdzNj L3dlYi1wbGF0Zm9ybS10ZXN0cy9lbmNyeXB0ZWQtbWVkaWEvY2xlYXJrZXktbXA0LXNldG1lZGlh a2V5cy1hZ2Fpbi1hZnRlci1yZXNldHRpbmctc3JjLmh0dHBzLmh0bWwgWyBDcmFzaCBQYXNzIF0K LXdlYmtpdC5vcmcvYi8yMTAyNjQgaW1wb3J0ZWQvdzNjL3dlYi1wbGF0Zm9ybS10ZXN0cy9lbmNy eXB0ZWQtbWVkaWEvY2xlYXJrZXktZXZlbnRzLXNlc3Npb24tY2xvc2VkLWV2ZW50Lmh0dHBzLmh0 bWwgWyBGYWlsdXJlIFBhc3MgXQogd2Via2l0Lm9yZy9iLzIxMDk2NSBpbXBvcnRlZC93M2Mvd2Vi LXBsYXRmb3JtLXRlc3RzL2VuY3J5cHRlZC1tZWRpYS9jbGVhcmtleS1tcDQtcGxheWJhY2stdGVt cG9yYXJ5LW11bHRpa2V5LXNlcXVlbnRpYWwtcmVhZHlTdGF0ZS5odHRwcy5odG1sIFsgRmFpbHVy ZSBdCiB3ZWJraXQub3JnL2IvMjEwOTY2IGltcG9ydGVkL3czYy93ZWItcGxhdGZvcm0tdGVzdHMv ZW5jcnlwdGVkLW1lZGlhL2NsZWFya2V5LW1wNC1zZXRtZWRpYWtleXMtYWdhaW4tYWZ0ZXItcGxh eWJhY2suaHR0cHMuaHRtbCBbIENyYXNoIFBhc3MgXQogd2Via2l0Lm9yZy9iLzE3ODcwNyBpbXBv cnRlZC93M2Mvd2ViLXBsYXRmb3JtLXRlc3RzL2VuY3J5cHRlZC1tZWRpYS9lbmNyeXB0ZWQtbWVk aWEtZGVmYXVsdC1mZWF0dXJlLXBvbGljeS5odHRwcy5zdWIuaHRtbCBbIFNraXAgXQpAQCAtNDc0 LDYgKzQ3Myw3IEBAIHdlYmtpdC5vcmcvYi8yMTMzNjQgaW1wb3J0ZWQvdzNjL3dlYi1wbGF0Zm9y bS10ZXN0cy9lbmNyeXB0ZWQtbWVkaWEvY2xlYXJrZXktbXA0CiBpbXBvcnRlZC93M2Mvd2ViLXBs YXRmb3JtLXRlc3RzL2VuY3J5cHRlZC1tZWRpYS9jbGVhcmtleS1jaGVjay1lbmNyeXB0aW9uLXNj aGVtZS5odHRwcy5odG1sIFsgUGFzcyBdCiBpbXBvcnRlZC93M2Mvd2ViLXBsYXRmb3JtLXRlc3Rz L2VuY3J5cHRlZC1tZWRpYS9jbGVhcmtleS1jaGVjay1pbml0ZGF0YS10eXBlLmh0dHBzLmh0bWwg WyBQYXNzIF0KIGltcG9ydGVkL3czYy93ZWItcGxhdGZvcm0tdGVzdHMvZW5jcnlwdGVkLW1lZGlh L2NsZWFya2V5LWV2ZW50cy5odHRwcy5odG1sIFsgUGFzcyBdCitpbXBvcnRlZC93M2Mvd2ViLXBs YXRmb3JtLXRlc3RzL2VuY3J5cHRlZC1tZWRpYS9jbGVhcmtleS1ldmVudHMtc2Vzc2lvbi1jbG9z ZWQtZXZlbnQuaHR0cHMuaHRtbCBbIFBhc3MgXQogaW1wb3J0ZWQvdzNjL3dlYi1wbGF0Zm9ybS10 ZXN0cy9lbmNyeXB0ZWQtbWVkaWEvY2xlYXJrZXktZ2VuZXJhdGUtcmVxdWVzdC1kaXNhbGxvd2Vk LWlucHV0Lmh0dHBzLmh0bWwgWyBQYXNzIF0KIGltcG9ydGVkL3czYy93ZWItcGxhdGZvcm0tdGVz dHMvZW5jcnlwdGVkLW1lZGlhL2NsZWFya2V5LWludmFsaWQtbGljZW5zZS5odHRwcy5odG1sIFsg UGFzcyBdCiBpbXBvcnRlZC93M2Mvd2ViLXBsYXRmb3JtLXRlc3RzL2VuY3J5cHRlZC1tZWRpYS9j bGVhcmtleS1rZXlzdGF0dXNlcy5odHRwcy5odG1sIFsgUGFzcyBdCg==