Hello,
After installing the latest 2.8.3 release candidate, I noticed that a few apps are now crashing the X11 server when I resize them.
The first crash report I received after resizing a scientific app I use a lot gave:
Process: X11.bin [25262]
Path: /Applications/Utilities/XQuartz.app/Contents/MacOS/X11.bin
Identifier: org.xquartz.X11
Version: 2.8.3_rc1 (2.8.31)
Code Type: X86-64 (Native)
Parent Process: ??? [25261]
Responsible: X11.bin [25262]
User ID: 1002
Crashed Thread: 1
Exception Type: EXC_CRASH (SIGABRT)
Exception Codes: 0x0000000000000000, 0x0000000000000000
Exception Note: EXC_CORPSE_NOTIFY
Application Specific Information:
X.Org X Server 21.1.4
abort() called
X11.bin(25262,0x70000b1d8000) malloc: *** error for object 0x7f8cddd50fe0: pointer being freed was not allocated
Thread 1 Crashed:
0 libsystem_kernel.dylib 0x00007fff79c8f2c2 __pthread_kill + 10
1 libsystem_pthread.dylib 0x00007fff79d4abf1 pthread_kill + 284
2 libsystem_c.dylib 0x00007fff79bf96a6 abort + 127
3 libsystem_malloc.dylib 0x00007fff79d08077 malloc_vreport + 545
4 libsystem_malloc.dylib 0x00007fff79d07e38 malloc_report + 151
5 X11.bin 0x000000010f9c1dd1 fbDestroyPixmap + 14
6 X11.bin 0x000000010fa32c5d damageDestroyPixmap + 185
7 X11.bin 0x000000010fa4d84f ShmDestroyPixmap + 155
8 X11.bin 0x000000010fa3d459 FreePicture + 257
9 X11.bin 0x000000010fa20048 compPaintChildrenToWindow + 514
10 X11.bin 0x000000010fa1fe95 compPaintChildrenToWindow + 79
11 X11.bin 0x000000010fa1fe95 compPaintChildrenToWindow + 79
12 X11.bin 0x000000010fa1fe95 compPaintChildrenToWindow + 79
13 X11.bin 0x000000010fa1c798 compScreenUpdate + 68
14 X11.bin 0x000000010f9f4d12 ProcessWorkQueue + 37
15 X11.bin 0x000000010faa0eb4 WaitForSomething + 101
16 X11.bin 0x000000010f9ea753 Dispatch + 189
17 X11.bin 0x000000010f9f4184 dix_main + 970
18 X11.bin 0x000000010f9a2766 server_thread + 38
19 libsystem_pthread.dylib 0x00007fff79d482eb _pthread_body + 126
20 libsystem_pthread.dylib 0x00007fff79d4b249 _pthread_start + 66
21 libsystem_pthread.dylib 0x00007fff79d4740d thread_start + 13
So it looks like the crash has something to do with a Pixmap. However, other crash reports give different results:
Crashed Thread: 3
Exception Type: EXC_BAD_ACCESS (SIGSEGV)
Exception Codes: EXC_I386_GPFLT
Exception Note: EXC_CORPSE_NOTIFY
Termination Signal: Segmentation fault: 11
Termination Reason: Namespace SIGNAL, Code 0xb
Terminating Process: exc handler [40512]
Thread 3 Crashed:
0 X11.bin 0x0000000105ecf310 CreateScratchGC + 33
1 X11.bin 0x0000000105e9ba13 miPaintWindow + 560
2 X11.bin 0x0000000105ea81e0 miHandleValidateExposures + 73
3 X11.bin 0x0000000105ea8da3 miResizeWindow + 2392
4 X11.bin 0x0000000105e78e0f RootlessResizeWindow + 711
5 X11.bin 0x0000000105eeb2ad compResizeWindow + 83
6 X11.bin 0x0000000105ee55fe ConfigureWindow + 2829
7 X11.bin 0x0000000105eb7921 ProcConfigureWindow + 123
8 X11.bin 0x0000000105eb6938 Dispatch + 674
9 X11.bin 0x0000000105ec0184 dix_main + 970
10 X11.bin 0x0000000105e6e766 server_thread + 38
11 libsystem_pthread.dylib 0x00007fff79d482eb _pthread_body + 126
12 libsystem_pthread.dylib 0x00007fff79d4b249 _pthread_start + 66
13 libsystem_pthread.dylib 0x00007fff79d4740d thread_start + 13
or
Exception Type: EXC_BAD_ACCESS (SIGSEGV)
Exception Codes: KERN_INVALID_ADDRESS at 0x0000000115ca6000
Exception Note: EXC_CORPSE_NOTIFY
Termination Signal: Segmentation fault: 11
Termination Reason: Namespace SIGNAL, Code 0xb
Terminating Process: exc handler [40304]
VM Regions Near 0x115ca6000:
CG backing stores 00000001158d5000-0000000115ca6000 [ 3908K] rw-/rw- SM=PRV
-->
STACK GUARD 00007000040a7000-00007000040a8000 [ 4K] ---/rwx SM=NUL stack guard for thread 8
Thread 1 Crashed:
0 libpixman-1.0.dylib 0x000000010f7163b4 sse2_fill + 359
1 libpixman-1.0.dylib 0x000000010f706c1b _pixman_implementation_fill + 88
2 libpixman-1.0.dylib 0x000000010f6bbce5 pixman_fill + 49
3 X11.bin 0x000000010f40e205 fbFill + 889
4 X11.bin 0x000000010f40ead8 fbPolyFillRect + 231
5 X11.bin 0x000000010f3ff20e DRIPolyFillRect + 82
6 X11.bin 0x000000010f485ba8 damagePolyFillRect + 490
7 X11.bin 0x000000010f3f5f41 RootlessPolyFillRect + 310
8 X11.bin 0x000000010f41eae5 miPaintWindow + 770
9 X11.bin 0x000000010f41ede5 miWindowExposures + 191
10 X11.bin 0x000000010f42b205 miHandleValidateExposures + 110
11 X11.bin 0x000000010f42bda3 miResizeWindow + 2392
12 X11.bin 0x000000010f3fbe0f RootlessResizeWindow + 711
13 X11.bin 0x000000010f46e2ad compResizeWindow + 83
14 X11.bin 0x000000010f4685fe ConfigureWindow + 2829
15 X11.bin 0x000000010f43a921 ProcConfigureWindow + 123
16 X11.bin 0x000000010f439938 Dispatch + 674
17 X11.bin 0x000000010f443184 dix_main + 970
18 X11.bin 0x000000010f3f1766 server_thread + 38
19 libsystem_pthread.dylib 0x00007fff79d482eb _pthread_body + 126
20 libsystem_pthread.dylib 0x00007fff79d4b249 _pthread_start + 66
21 libsystem_pthread.dylib 0x00007fff79d4740d thread_start + 13
Two common programs that cause this crash when resizing are the “display" executable that comes with ImageMagick and the gv postcript viewer. However, if I execute gv with the —pixmap command line option which causes gv to use a backing pixmap it does not crash the server. There is no problem with any of these programs with Xquartz 2.8.2.
Thanks for keeping XQuartz working on new macs. Let me know if you need more information from me about these crashes,
Martin Otte