git: DragonFly_RELEASE_5_4 psm - Fix panic in ps/2 mouse driver

Matthew Dillon dillon at
Mon Mar 11 22:01:01 PDT 2019

commit 64d15ba7fd892afea53ac21895e7065371b9a174
Author: Matthew Dillon <dillon at>
Date:   Mon Mar 11 21:10:12 2019 -0700

    psm - Fix panic in ps/2 mouse driver
    * Fix a race in the ps/2 driver where a callout could be interrupted
      by psmintr() and corrupt the ps/2 packet buffer, causing a panic.
    * Use a lockmgr lock instead of (archaic) critical sections for interrupt
      protection.  Also use the locked callout API.  This will hopefully
      prevent any further corruption.
    Reported-by: drill-use at irc

Summary of changes:
 sys/dev/misc/psm/psm.c | 97 +++++++++++++++++++++++++-------------------------
 1 file changed, 49 insertions(+), 48 deletions(-)

DragonFly BSD source repository

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