git: kqueue - Fix bad error path triggered by emacs

Matthew Dillon dillon at
Mon Jul 19 18:12:30 PDT 2010

commit 767629739cccd8cca9182968efc7e04bab6912ac
Author: Matthew Dillon <dillon at>
Date:   Mon Jul 19 18:08:18 2010 -0700

    kqueue - Fix bad error path triggered by emacs
    * Some device d_kqfilter functions were not setting ap->a_result,
      leading to an error being improperly returned and knotes left
      hanging.  This led to a lockup and/or a panic when running emacs.
    * Adjust dev_dkqfilter() to preset ap->a_result to 0 to fix the
      problem and document it.
    Reported-by: Sascha Wildner <swildner at>

Summary of changes:
 sys/kern/kern_device.c |    7 +++++++
 1 files changed, 7 insertions(+), 0 deletions(-)

DragonFly BSD source repository

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