git: DragonFly_RELEASE_3_0 vkernel - Fix semi-random SIGILL crashes under heavy network loads

[Matthew Dillon]

commit 7f65f0d5238875c7e0d3cf4e31af15deacdf8bb4
Author: Matthew Dillon <dillon at apollo.backplane.com>
Date:   Thu Feb 2 15:17:44 2012 -0800

    vkernel - Fix semi-random SIGILL crashes under heavy network loads
    
    * SIGIO was being installed with SA_NODEFER, resulting in situations
      under heavy network loads where multiple SIGIOs could stack and cause
      a stack overflow.  This often resulted in the sendsig code in the kernel
      generating a SIGILL to the process after being unable to push a new
      signal context.
    
    * Removing SA_NODEFER appears to solve the problem.
    
    Reported-by: tuxillo

Summary of changes:
 sys/platform/vkernel/platform/kqueue.c   |    2 +-
 sys/platform/vkernel64/platform/kqueue.c |    2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

http://gitweb.dragonflybsd.org/dragonfly.git/commitdiff/7f65f0d5238875c7e0d3cf4e31af15deacdf8bb4


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