| Summary: |
Recursive Xkb SIGSEGV causes system hang. |
| Product: |
xorg
|
Reporter: |
Thomas Hellström <thomas> |
| Component: |
Server/General | Assignee: |
Xorg Project Team <xorg-team> |
| Status: |
RESOLVED
FIXED
|
QA Contact: |
Xorg Project Team <xorg-team> |
| Severity: |
critical
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| Priority: |
medium
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| Version: |
git | |
|
| Hardware: |
Other | |
|
| OS: |
All | |
|
| Whiteboard: |
|
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i915 platform:
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i915 features:
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When the X server receives a SIGSEGV and calls FatalError from the signal handler, a second SIGSEGV from within the handler causes a complete system hang. Backtrace: (The first SIGSEGV was generated using a killall -SEGV X from within KDE). Program received signal SIGSEGV, Segmentation fault. XkbEnableDisableControls (xkbi=0x8256fc8, change=542, newValues=512, changes=0x0, cause=0xbf9b14d4) at xkbUtils.c:748 748 ctrls= xkbi->desc->ctrls; (gdb) where #0 XkbEnableDisableControls (xkbi=0x8256fc8, change=542, newValues=512, changes=0x0, cause=0xbf9b14d4) at xkbUtils.c:748 #1 0x0818501a in XkbRemoveResourceClient (inDev=0x82503e8, id=1088421888) at xkbEvents.c:1014 #2 0x0807e462 in CloseDevice (dev=0x82503e8) at devices.c:512 #3 0x0807e6a9 in CloseDownDevices () at devices.c:530 #4 0x081b18c3 in AbortServer () at log.c:408 #5 0x081b1dd6 in FatalError (f=0x81bc294 "Caught signal %d. Server aborting\n") at log.c:555 #6 0x080bed6d in xf86SigHandler (signo=11) at xf86Events.c:771 #7 <signal handler called> #8 0xffffe410 in __kernel_vsyscall () #9 0xb7d0925d in select () from /lib/i686/libc.so.6 #10 0x081a49f3 in WaitForSomething (pClientsReady=0xbf9b1ba0) at WaitFor.c:238 #11 0x08085e42 in Dispatch () at dispatch.c:425 #12 0x0806d825 in main (argc=8, argv=0xbf9b20d4, envp=0x0) at main.c:467 (gdb) A subsequent step causes a complete system hang.