Bug 161294 – [iOS Simulator] dyld_sim crash on launch in macOS Sierra Beta using iOS SDK 9.3 (Xcode 7.3.1)

• Status: RESOLVED
• Resolution: WORKSFORME
• Component: Tools / Tests

[Benjamin King]

Created attachment 287215 [details]
MobileSafari crash report in the iOS Simulator

WebKit SVN 205081
git-svn-id: http://svn.webkit.org/repository/webkit/trunk@205081 268f45cc-cd09-0410-ab3c-d52691b4dbfc
iOS SDK 9.3 -- Xcode 7.3.1
macOS Sierra Beta 10.12 Beta (16A304a)

Steps to reproduce:

1. Build WebKit: Tools/Scripts/build-webkit --ios-simulator
   using iOS SDK 9.3 in Xcode 7.3.1 (xcode-select -p => /Applications/Xcode.app/Contents/Developer)
2. Run MobileSafari with built WebKit: Tools/Scripts/run-safari --ios-simulator
   on macOS Sierra Beta 10.12 Beta (16A304a)

Expected Result: 

MobileSafari should launch

Actual Result:

dyld_sim crashes which also crashes MobileSafari

Exception Type:        EXC_BREAKPOINT (SIGTRAP)
Exception Codes:       0x0000000000000002, 0x0000000000000000
Exception Note:        EXC_CORPSE_NOTIFY

Termination Signal:    Trace/BPT trap: 5
Termination Reason:    Namespace SIGNAL, Code 0x5
Terminating Process:   exc handler [0]

Application Specific Information:
dyld: launch, loading dependent libraries
DYLD_FRAMEWORK_PATH=/Users/king/Code/WebKit/WebKitBuild/Release-iphonesimulator
DYLD_FALLBACK_LIBRARY_PATH=/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator.sdk/usr/lib
DYLD_ROOT_PATH=/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator.sdk
DYLD_FALLBACK_FRAMEWORK_PATH=/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator.sdk/System/Library/Frameworks
DYLD_SHARED_REGION=avoid
DYLD_LIBRARY_PATH=/Users/king/Code/WebKit/WebKitBuild/Release-iphonesimulator

Thread 0 Crashed:
0   dyld_sim                      	0x00000001053b3001 dyld_fatal_error + 1
1   dyld_sim                      	0x00000001053b554a dyld::halt(char const*) + 77
2   dyld_sim                      	0x00000001053b6e06 dyld::_main(macho_header const*, unsigned long, int, char const**, char const**, char const**, unsigned long*) + 2554
3   dyld_sim                      	0x00000001053b3251 start_sim + 136
4   dyld                          	0x0000000109da02ff dyld::useSimulatorDyld(int, macho_header const*, char const*, int, char const**, char const**, char const**, unsigned long*, unsigned long*) + 2246
5   dyld                          	0x0000000109d9e976 dyld::_main(macho_header const*, unsigned long, int, char const**, char const**, char const**, unsigned long*) + 238
6   dyld                          	0x0000000109d9a249 dyldbootstrap::start(macho_header const*, int, char const**, long, macho_header const*, unsigned long*) + 470
7   dyld                          	0x0000000109d9a036 _dyld_start + 54

Thread 0 crashed with X86 Thread State (64-bit):
  rax: 0x0000000109dd7000  rbx: 0x00000001053f7118  rcx: 0x00000001053f7300  rdx: 0x0000000000000000
  rdi: 0x00000001053dba80  rsi: 0x0000000000000001  rbp: 0x00007fff5aa5e480  rsp: 0x00007fff5aa5e468
   r8: 0x00000001053dbc68   r9: 0x00000000000001e8  r10: 0x00000001053dbc69  r11: 0x0000000000000000
  r12: 0x0000000000000000  r13: 0x0000000000000002  r14: 0x00000001053dba80  r15: 0x0000000000000002
  rip: 0x00000001053b3001  rfl: 0x0000000000000202  cr2: 0x00000001053d1169
  
Logical CPU:     0
Error Code:      0x00000000
Trap Number:     3


Binary Images:
       0x10519d000 -        0x10532bfff  com.apple.mobilesafari (9.0 - 601.1) <556874F8-CD7F-38C2-93F9-01EE30BACD2E> /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator.sdk/Applications/MobileSafari.app/MobileSafari
       0x1053b2000 -        0x1053d9837 +dyld_sim (390.7) <49268249-F1CD-35FC-BFFD-B4B8F3751B0D> /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator.sdk/usr/lib/dyld_sim

[Benjamin King]

git-svn-id: http://svn.webkit.org/repository/webkit/trunk@205091 268f45cc-cd09-0410-ab3c-d52691b4dbfc
- 10 commits newer then previous commit
iOS SDK 9.3 -- Xcode 7.3.1
macOS Sierra Beta 10.12 Beta (16A304a)

run-webkit-tests --ios-simulator works. I see 2 iOS simulator running the layout tests.

$ Tools/Scripts/run-webkit-tests --ios-simulator
This machine could support 4 simulators, but is only configured for 2.
Please see <https://trac.webkit.org/wiki/IncreasingKernelLimits>.
Using port 'ios-simulator-sierra-wk2'
Test configuration: <sierra, x86_64, release>
Placing test results in /Users/king/Code/WebKit/WebKitBuild/Release-iphonesimulator/layout-test-results
Baseline search path: platform/ios-simulator-wk2 -> platform/ios-simulator -> platform/wk2 -> generic
Using Release build
Pixel tests disabled
Regular timeout: 30000, slow test timeout: 150000
Command line: /Users/king/Code/WebKit/WebKitBuild//Release/LayoutTestRelay -developerDir /Applications/Xcode.app/Contents/Developer -udid <dummy id> -productDir /Users/king/Code/WebKit/WebKitBuild/Release-iphonesimulator -app /Users/king/Code/WebKit/WebKitBuild/Release-iphonesimulator/WebKitTestRunnerApp.app -- -

--lint-test-files warnings:
LayoutTests/TestExpectations:596 Path does not exist. imported/w3c/web-platform-tests/tools

Found 45627 tests; running 39261, skipping 6366.

Running 39261 tests

Creating app:/tmp/WebKitTestingSimulators/Simulator0.app
/tmp/WebKitTestingSimulators/Simulator0.app: replacing existing signature
Creating app:/tmp/WebKitTestingSimulators/Simulator1.app
/tmp/WebKitTestingSimulators/Simulator1.app: replacing existing signature
Waiting for all iOS Simulators to finish booting.
Auto-installing package: resources   
Auto-installing package: webidl2
Auto-installing package: widlproc
Auto-installing package: tools
Auto-installing package: html5lib
Auto-installing package: testdata
Auto-installing package: pytest
Auto-installing package: pywebsocket
Auto-installing package: six
Auto-installing package: webdriver
Auto-installing package: wptserve
Running 2 WebKitTestRunnerApp.apps in parallel.

[1059/39259] animations/stop-animation-on-suspend.html failed unexpectedly (text diff)                       
[1085/39259] animations/trigger-container-scroll-boundaries.html passed unexpectedly     
[1087/39259] animations/trigger-container-scroll-empty.html failed unexpectedly (text diff)
[1218/39259] compositing/iframes/iframe-size-from-zero.html passed unexpectedly                         
[1316/39259] compositing/masks/compositing-clip-path-change-no-repaint.html failed unexpectedly (text diff)
  compositing/overlap-blending/children-opacity-huge.html -> ref test hashes didn't match but diff passed           
  compositing/overlap-blending/children-opacity-no-overlap.html -> ref test hashes didn't match but diff passed
  compositing/overlap-blending/nested-non-overlap-clipping.html -> ref test hashes didn't match but diff passed
css3/filters/backdrop/backdrop-filter-with-clip-path.html is a reftest, but has an unused expectation file. Please remove /Users/king/Code/WebKit/LayoutTests/css3/filters/backdrop/backdrop-filter-with-clip-path-expected.txt.
[3209/39259] css3/flexbox/image-percent-max-height.html passed unexpectedly                       
[10785/39259] fast/css/sticky/inflow-sticky.html passed unexpectedly                                                            
[10798/39259] fast/css/sticky/inline-sticky-abspos-child.html passed unexpectedly
[10827/39259] fast/css/sticky/replaced-sticky.html passed unexpectedly                   
[10830/39259] fast/css/sticky/sticky-as-positioning-container.html passed unexpectedly
[10835/39259] fast/css/sticky/sticky-both-sides.html passed unexpectedly
[10845/39259] fast/css/sticky/sticky-left.html passed unexpectedly                   
[10851/39259] fast/css/sticky/sticky-margins.html passed unexpectedly
[10880/39259] fast/css/sticky/sticky-side-margins.html passed unexpectedly
[10896/39259] fast/css/sticky/sticky-table-row-top.html passed unexpectedly                 
[10898/39259] fast/css/sticky/sticky-table-thead-top.html passed unexpectedly
[10903/39259] fast/css/sticky/sticky-top-margins.html passed unexpectedly
[10910/39259] fast/css/sticky/sticky-top-zoomed.html passed unexpectedly                       
[10912/39259] fast/css/sticky/sticky-top.html passed unexpectedly
[10918/39259] fast/css/sticky/sticky-writing-mode-horizontal-bt.html passed unexpectedly

[Alexey Proskuryakov]

Does this work for you with the version of Xcode that ships with Sierra? I'm somewhat surprised that 7.3.1 works at all. 

Is there anything in console log that explains the crash?

[Benjamin King]

macOS Sierra 10.12 Beta supports Xcode 7.3.1 and 8.0 Beta. When I try to build for the iOS Simulator using Xcode 8 Beta I get a build failure, see:
https://bugs.webkit.org/show_bug.cgi?id=161296

[Benjamin King]

Cannot reproduce using macOS Sierra GM and Xcode 8.0 GM.

$ xcode-select -p
/Applications/Xcode-8GM.app/Contents/Developer
$ xcodebuild -version
Xcode 8.0
Build version 8A218a
$ sw_vers
ProductName:	Mac OS X
ProductVersion:	10.12
BuildVersion:	16A319