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(parent: 01a9617) | patch
USB: pid_ns: ensure pid is not freed during kill_pid_info_as_uid
authorSerge Hallyn <serge.hallyn@canonical.com>
Mon, 26 Sep 2011 15:18:29 +0000 (10:18 -0500)
committerGreg Kroah-Hartman <gregkh@suse.de>
Mon, 7 Nov 2011 20:32:20 +0000 (12:32 -0800)
commit6f32aa1bfe70f3493fdbf1fa425a17c795cc3c14
tree2962123584cdee1383827ce84aaa14a6a569cdcatree | snapshot
parent01a9617ed2441ce3beb23f617ce7c58783a072becommit | diff
USB: pid_ns: ensure pid is not freed during kill_pid_info_as_uid

commit aec01c5895051849ed842dc5b8794017a7751f28 upstream.

Alan Stern points out that after spin_unlock(&ps->lock) there is no
guarantee that ps->pid won't be freed.  Since kill_pid_info_as_uid() is
called after the spin_unlock(), the pid passed to it must be pinned.

Reported-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Serge Hallyn <serge.hallyn@canonical.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
drivers/usb/core/devio.c diff | blob | history
Linux kernels and configurations used by Zygo.