[haiku-bugs] Re: [Haiku] #8068: A crash bring up the app_server in gdb when changing the screen resolution
- From: "mmlr" <trac@xxxxxxxxxxxx>
- Date: Fri, 25 Nov 2011 15:17:20 -0000
#8068: A crash bring up the app_server in gdb when changing the screen
resolution
----------------------------------+----------------------------
Reporter: oco | Owner: axeld
Type: bug | Status: closed
Priority: normal | Milestone: R1
Component: Servers/app_server | Version: R1/Development
Resolution: fixed | Keywords:
Blocked By: | Blocking:
Has a Patch: 0 | Platform: All
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Changes (by mmlr):
* status: new => closed
* resolution: => fixed
Comment:
Fixed in hrev43321.
The libroot calls actually crashed in _errnop() where the clobbered TLS
was used. Since TLS is re-setup on reschedule (more specifically on
context switch) it also explains why I didn't see the crash when
introducing enough pauses to always trigger a reschedule before returning
from the vm86 code (even with SMP). Obviously staying on the same CPU
worked as well as the restored TLS value happened to be the right one.
--
Ticket URL: <http://dev.haiku-os.org/ticket/8068#comment:7>
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