BackPup/Linux
1
0 Fork 0
mirror of https://github.com/torvalds/linux.git synced 2026-10-07 05:31:08 -04:00
Code Issues Packages Projects Releases Wiki Activity

pidns: fix free_pid() to handle the first fork failure

Browse Source 
"case 0" in free_pid() assumes that disable_pid_allocation() should
clear PIDNS_HASH_ADDING before the last pid goes away.

However this doesn't happen if the first fork() fails to create the
child reaper which should call disable_pid_allocation().

Signed-off-by: Oleg Nesterov <[email protected]>
Reviewed-by: "Eric W. Biederman" <[email protected]>
Cc: "Serge E. Hallyn" <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
This commit is contained in:
Oleg Nesterov authored and Linus Torvalds committed 2013-09-30 14:31:03 -07:00
1 parent 4271b05a22
commit 314a8ad0f1
1 file changed
+5
Download Patch File Download Diff File Expand all files Collapse all files
kernel/pid.c
+5
View File
@@ -273,6 +273,11 @@ void free_pid(struct pid *pid)
*/
wake_up_process(ns->child_reaper);
break;
case PIDNS_HASH_ADDING:
/* Handle a fork failure of the first process */
WARN_ON(ns->child_reaper);
ns->nr_hashed = 0;
/* fall through */
case 0:
schedule_work(&ns->proc_work);
break;