ThreadSanitizer: use of an invalid mutex (e.g. uninitialized or destroyed) (CoreGraphics+0x34650f) in ripl_retain
Originator: | steipete | ||
Number: | rdar://28612548 | Date Originated: | 04-Oct-2016 08:06 PM |
Status: | Closed | Resolved: | 22-Nov-2016 |
Product: | iOS SDK (CoreGraphics) | Product Version: | iOS 10GM |
Classification: | Bug | Reproducible: | Always |
Peter Steinberger04-Oct-2016 08:06 PM Area: Something not on this list Summary: While using ThreadSanitizer on PSPDFKit, we detected an issue in the CoreGraphics PDF backend. Looks like a mutex is used but not initialized. This might go unnoticed or crash hard - it's undefined and is definitely bad; and at the same time a one-line code modification will fix that. Steps to Reproduce: Open Sample. Run tests. Observe Thread Sanitizer trigger. Expected Results: Thread Sanitizer should run through cleanly. Actual Results: ================== WARNING: ThreadSanitizer: use of an invalid mutex (e.g. uninitialized or destroyed) (pid=76396) #0 pthread_mutex_lock <null>:284 (libclang_rt.tsan_iossim_dynamic.dylib+0x00000003179e) #1 ripl_retain <null>:174 (CoreGraphics+0x00000034650f) #2 __invoking___ <null>:178 (CoreFoundation+0x00000007e05b) #3 start <null>:141 (libdyld.dylib+0x00000000468c) Location is heap block of size 144 at 0x7d240000dc80 allocated by main thread: #0 calloc <null>:284 (libclang_rt.tsan_iossim_dynamic.dylib+0x000000040702) #1 RIPLayerCreateUndefined <null>:174 (CoreGraphics+0x000000347eba) #2 __invoking___ <null>:178 (CoreFoundation+0x00000007e05b) #3 start <null>:141 (libdyld.dylib+0x00000000468c) Mutex M3247 (0x7d240000dcd0) created at: #0 pthread_mutex_lock <null>:284 (libclang_rt.tsan_iossim_dynamic.dylib+0x00000003179e) #1 ripl_retain <null>:174 (CoreGraphics+0x00000034650f) #2 __invoking___ <null>:178 (CoreFoundation+0x00000007e05b) #3 start <null>:141 (libdyld.dylib+0x00000000468c) SUMMARY: ThreadSanitizer: use of an invalid mutex (e.g. uninitialized or destroyed) (CoreGraphics+0x34650f) in ripl_retain ================== Version: iOS 10 GM Notes: Thread Sanitizer is *seriously* awesome. Thank you! Configuration: iPad Pro 9.7 Simulator, Xcode 8 GM Attachments:
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