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Netgraph queue processing thread must process all its items

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in the network epoch.

Reported by:	Michael Zhilin <mizhka@ >
This commit is contained in:
Gleb Smirnoff 2020-01-15 03:35:57 +00:00
parent 3264dcadc9
commit 35e67a79fb
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=356749
1 changed files with 4 additions and 0 deletions
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4
sys/netgraph/ng_base.c
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@ -55,6 +55,7 @@
#include <sys/malloc.h>
#include <sys/mbuf.h>
#include <sys/proc.h>
#include <sys/epoch.h>
#include <sys/queue.h>
#include <sys/refcount.h>
#include <sys/rwlock.h>
@ -3398,6 +3399,7 @@ static void
ngthread(void *arg)
{
for (;;) {
struct epoch_tracker et;
node_p node;
/* Get node from the worklist. */
@ -3418,6 +3420,7 @@ ngthread(void *arg)
* that lets us be sure that the node still exists.
* Let the reference go at the last minute.
*/
NET_EPOCH_ENTER(et);
for (;;) {
item_p item;
int rw;
@ -3435,6 +3438,7 @@ ngthread(void *arg)
NG_NODE_UNREF(node);
}
}
NET_EPOCH_EXIT(et);
NG_NODE_UNREF(node);
CURVNET_RESTORE();
}