Thread 0 Crashed: 0 WebCore 0x0000000189246b5c WebCore::LibWebRTCMediaEndpoint::gatherStatsForLogging() + 4 (/BuildRoot/Library/Caches/com.apple.xbs/Sources/WebCore/WebCore-7604.1.25.4.2/Modules/mediastream/libwebrtc/LibWebRTCMediaEndpoint.cpp:994) 1 WebCore 0x000000018868da58 WebCore::ThreadTimers::sharedTimerFiredInternal() + 172 (/BuildRoot/Library/Caches/com.apple.xbs/Sources/WebCore/WebCore-7604.1.25.4.2/platform/ThreadTimers.cpp:118) 2 WebCore 0x000000018868d998 WebCore::timerFired(__CFRunLoopTimer*, void*) + 28 (/BuildRoot/Library/Caches/com.apple.xbs/Sources/WebCore/WebCore-7604.1.25.4.2/platform/cf/MainThreadSharedTimerCF.cpp:74) 3 CoreFoundation 0x0000000183588b88 __CFRUNLOOP_IS_CALLING_OUT_TO_A_TIMER_CALLBACK_FUNCTION__ + 28 (/BuildRoot/Library/Caches/com.apple.xbs/Sources/CF/CF-1433.30/RunLoop.subproj/CFRunLoop.c:1827) 4 CoreFoundation 0x00000001835888ac __CFRunLoopDoTimer + 864 (/BuildRoot/Library/Caches/com.apple.xbs/Sources/CF/CF-1433.30/RunLoop.subproj/CFRunLoop.c:2366) 5 CoreFoundation 0x0000000183588150 __CFRunLoopDoTimers + 248 (/BuildRoot/Library/Caches/com.apple.xbs/Sources/CF/CF-1433.30/RunLoop.subproj/CFRunLoop.c:2505) 6 CoreFoundation 0x0000000183585c74 __CFRunLoopRun + 1712 (/BuildRoot/Library/Caches/com.apple.xbs/Sources/CF/CF-1433.30/RunLoop.subproj/CFRunLoop.c:3002) 7 CoreFoundation 0x00000001834a4280 CFRunLoopRunSpecific + 436 (/BuildRoot/Library/Caches/com.apple.xbs/Sources/CF/CF-1433.30/RunLoop.subproj/CFRunLoop.c:3148) 8 Foundation 0x0000000184075620 -[NSRunLoop(NSRunLoop) runMode:beforeDate:] + 304 (/BuildRoot/Library/Caches/com.apple.xbs/Sources/Foundation/Foundation-1433.32/Soil.subproj/NSRunLoop.m:367) 9 Foundation 0x00000001840c8734 -[NSRunLoop(NSRunLoop) run] + 88 (/BuildRoot/Library/Caches/com.apple.xbs/Sources/Foundation/Foundation-1433.32/Soil.subproj/NSRunLoop.m:389) 10 libxpc.dylib 0x0000000182514324 _xpc_objc_main + 516 (/BuildRoot/Library/Caches/com.apple.xbs/Sources/libxpc/libxpc-1173/src/main.m:198) 11 libxpc.dylib 0x0000000182516330 xpc_main + 180 (/BuildRoot/Library/Caches/com.apple.xbs/Sources/libxpc/libxpc-1173/src/init.c:1461) 12 com.apple.WebKit.WebContent 0x0000000103c9759c main + 380 (/BuildRoot/Library/Caches/com.apple.xbs/Sources/WebKit2/WebKit2-7604.1.25.4.2/Shared/EntryPointUtilities/mac/XPCService/XPCServiceMain.mm:148) 13 libdyld.dylib 0x0000000182295e40 start + 4
Created attachment 313123 [details] Patch
rdar://problem/32819360
Comment on attachment 313123 [details] Patch Clearing flags on attachment: 313123 Committed r218428: <http://trac.webkit.org/changeset/218428>
All reviewed patches have been landed. Closing bug.
This still happens for me in iOS 12.3.1. Scenario: frequently creating and closing new RTCPeerConnection's Incident Identifier: CF3ED574-9EF4-4E47-A5BD-608C6B5B66AF CrashReporter Key: 02c1826a78c3d8f24a5a112d7e5256cadbb752cc Hardware Model: iPhone7,2 Process: com.apple.WebKit.WebContent [761] Path: /System/Library/Frameworks/WebKit.framework/XPCServices/com.apple.WebKit.WebContent.xpc/com.apple.WebKit.WebContent Identifier: com.apple.WebKit.WebContent Version: 8607.2.6.0.1 (8607) Code Type: ARM-64 (Native) Role: Unspecified Parent Process: launchd [1] Coalition: com.apple.mobilesafari [548] Date/Time: 2019-06-10 12:52:40.0635 +0200 Launch Time: 2019-06-10 12:51:11.9058 +0200 OS Version: iPhone OS 12.3.1 (16F203) Baseband Version: 7.70.01 Report Version: 104 Exception Type: EXC_BAD_ACCESS (SIGSEGV) Exception Subtype: KERN_INVALID_ADDRESS at 0x0000000000000000 VM Region Info: 0 is not in any region. Bytes before following region: 4305338368 REGION TYPE START - END [ VSIZE] PRT/MAX SHRMOD REGION DETAIL UNUSED SPACE AT START ---> __TEXT 00000001009e4000-00000001009e8000 [ 16K] r-x/r-x SM=COW ...it.WebContent Termination Signal: Segmentation fault: 11 Termination Reason: Namespace SIGNAL, Code 0xb Terminating Process: exc handler [761] Triggered by Thread: 0 Thread 0 name: Dispatch queue: com.apple.main-thread Thread 0 Crashed: 0 WebCore 0x000000020575d4e0 WebCore::LibWebRTCMediaEndpoint::gatherStatsForLogging+ 726240 () + 8 1 WebCore 0x00000002068b320c WebCore::ThreadTimers::sharedTimerFiredInternal+ 18903564 () + 216 2 WebCore 0x00000002068d3258 WebCore::timerFired+ 19034712 (__CFRunLoopTimer*, void*) + 28 3 CoreFoundation 0x00000001fcdeb650 __CFRUNLOOP_IS_CALLING_OUT_TO_A_TIMER_CALLBACK_FUNCTION__ + 28 4 CoreFoundation 0x00000001fcdeb380 __CFRunLoopDoTimer + 864 5 CoreFoundation 0x00000001fcdeabb4 __CFRunLoopDoTimers + 248 6 CoreFoundation 0x00000001fcde5b04 __CFRunLoopRun + 1844 7 CoreFoundation 0x00000001fcde50b0 CFRunLoopRunSpecific + 436 8 Foundation 0x00000001fd7b2fac -[NSRunLoop+ 32684 (NSRunLoop) runMode:beforeDate:] + 300 9 Foundation 0x00000001fd7ee46c -[NSRunLoop+ 275564 (NSRunLoop) run] + 88 10 libxpc.dylib 0x00000001fcab8a44 _xpc_objc_main + 516 11 libxpc.dylib 0x00000001fcabb3a4 xpc_main + 176 12 com.apple.WebKit.WebContent 0x00000001009e760c 0x1009e4000 + 13836 13 com.apple.WebKit.WebContent 0x00000001009e77b8 0x1009e4000 + 14264 14 libdyld.dylib 0x00000001fc8aa8e0 start + 4