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Merge pull request #1645 from qlyoung/fix-cancel-invalid-rw

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lib: avoid crash when cancelling invalid rw job
This commit is contained in:
Jafar Al-Gharaibeh 2018-01-18 09:37:24 -06:00 committed by GitHub
commit 9ee9eb8066
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1 changed files with 13 additions and 1 deletions
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14
lib/thread.c
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@ -919,6 +919,8 @@ struct thread *funcname_thread_add_event(struct thread_master *m,
*/
static void thread_cancel_rw(struct thread_master *master, int fd, short state)
{
bool found = false;
/* Cancel POLLHUP too just in case some bozo set it */
state |= POLLHUP;
@ -926,8 +928,18 @@ static void thread_cancel_rw(struct thread_master *master, int fd, short state)
nfds_t i;
for (i = 0; i < master->handler.pfdcount; i++)
if (master->handler.pfds[i].fd == fd)
if (master->handler.pfds[i].fd == fd) {
found = true;
break;
}
if (!found) {
zlog_debug(
"[!] Received cancellation request for nonexistent rw job");
zlog_debug("[!] threadmaster: %s | fd: %d",
master->name ? master->name : "", fd);
return;
}
/* NOT out event. */
master->handler.pfds[i].events &= ~(state);