Commit 2fc1b5dd authored by Eric Dumazet's avatar Eric Dumazet Committed by David S. Miller
Browse files

dst: call cond_resched() in dst_gc_task()

Kernel bugzilla #15239

On some workloads, it is quite possible to get a huge dst list to
process in dst_gc_task(), and trigger soft lockup detection.

Fix is to call cond_resched(), as we run in process context.
Reported-by: default avatarPawel Staszewski <>
Tested-by: default avatarPawel Staszewski <>
Signed-off-by: default avatarEric Dumazet <>
Signed-off-by: default avatarDavid S. Miller <>
parent d696c7bd
......@@ -17,6 +17,7 @@
#include <linux/string.h>
#include <linux/types.h>
#include <net/net_namespace.h>
#include <linux/sched.h>
#include <net/dst.h>
......@@ -79,6 +80,7 @@ loop:
while ((dst = next) != NULL) {
next = dst->next;
if (likely(atomic_read(&dst->__refcnt))) {
last->next = dst;
last = dst;
Markdown is supported
0% or .
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment