git: kernel - Zero out syncache_percpu properly

Matthew Dillon dillon at
Sat Oct 21 17:32:59 PDT 2017

commit 3a4ff7dac479af6b7970814288508fc876a607a5
Author: Matthew Dillon <dillon at>
Date:   Sat Oct 21 17:31:43 2017 -0700

    kernel - Zero out syncache_percpu properly
    * The kmalloc for the syncache_percpu was not using M_ZERO
      which I believe can cause cache_count to be some random
      value.  If this value is close to or larger than the syncache
      limit, the garbage collector may run with no entries to reuse,
      causing a NULL pointer dereference and panic.
    Reported-by: pa3k #3088

Summary of changes:
 sys/netinet/tcp_syncache.c | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

DragonFly BSD source repository

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