Module Name: src
Committed By: martin
Date: Thu Feb 25 09:36:27 UTC 2021
Modified Files:
src/sys/arch/m68k/m68k [netbsd-9]: reenter_syscall.s
Log Message:
Pull up following revision(s) (requested by tsutsui in ticket #1214):
sys/arch/m68k/m68k/reenter_syscall.s: revision 1.5
sys/arch/m68k/m68k/reenter_syscall.s: revision 1.6
sys/arch/m68k/m68k/reenter_syscall.s: revision 1.7
Replace magic numbers with proper macros prepared in assym.h.
No binary changes.
Note this is a preparation for a possible fix of PR port-m68k/55990.
Consistently use motorola style. No binary changes.
Seems missed in rev 1.3:
https://mail-index.netbsd.org/source-changes/2013/08/01/msg046378.html
Plug kernel stack leaks in reenter_syscall() for setcontext(2).
This fixes long standing kernel crashes (MMU fault, address error,
and silent freeze by a double bus fault etc. seen for ~10 years)
caused by kernel stack overflow, especially on x68k and sun3 running
Xorg based servers. See PR/55990 for more details.
"This change seems perfectly reasonable" from thorpej@ and
jklos@ also reported this also solved freeze of his mac68k system
with 10 megabyes of memory.
Should be pulled up to netbsd-9 and netbsd-8.
To generate a diff of this commit:
cvs rdiff -u -r1.4 -r1.4.34.1 src/sys/arch/m68k/m68k/reenter_syscall.s
Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.
