git: kernel - Fix kernel crash in sysctl path

[Matthew Dillon]

commit a23ed7f524eb73f2bf9b81db08b87f033b94e6d3
Author: Matthew Dillon <dillon at apollo.backplane.com>
Date:   Wed May 19 11:05:20 2021 -0700

    kernel - Fix kernel crash in sysctl path
    
    * Fix a kernel crash which can occur in a particular sysctl due to some
      processes not having a p_textnch path.  The sysctl code was assuming that
      p->p_textnch would always be valid.  procfs already has the added check.
    
    * Fix a race against exit, requiring the proc->p_token to be held.
    
    Reported-by: htop devs, BenBE, cgzones

Summary of changes:
 sys/kern/kern_proc.c | 13 +++++++++----
 1 file changed, 9 insertions(+), 4 deletions(-)

http://gitweb.dragonflybsd.org/dragonfly.git/commitdiff/a23ed7f524eb73f2bf9b81db08b87f033b94e6d3


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