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Code Issues Releases Activity

Avoid panic from ng_uncallout when unpluggin ethernet cable with active

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PPTP VPN connection.

Submitted by:	Michael Zhilin <mizhka@gmail.com>
Reviewed by:	ngie
MFC after:	3 days
Differential Revision:	https://reviews.freebsd.org/D7209
This commit is contained in:
Sean Bruno 2016-08-08 19:31:01 +00:00
parent f7c7398485
commit 2f632dbb0b
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=303848
1 changed files with 1 additions and 1 deletions
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2
sys/netgraph/ng_base.c
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@ -3815,7 +3815,7 @@ ng_uncallout(struct callout *c, node_p node)
item = c->c_arg;
/* Do an extra check */
if ((rval > 0) && (c->c_func == &ng_callout_trampoline) &&
(NGI_NODE(item) == node)) {
(item != NULL) && (NGI_NODE(item) == node)) {
/*
* We successfully removed it from the queue before it ran
* So now we need to unreference everything that was