Oleg Nesterov 6dda81f438 pids: document task_pgrp/task_session is not safe without tasklist/rcu ... Even if task == current, it is not safe to dereference the result of task_pgrp/task_session. We can race with another thread which changes the special pid via setpgid/setsid. Document this. The next 2 patches give an example of the unsafe usage, we have more bad users. [akpm@linux-foundation.org: coding-style fixes] Signed-off-by: Oleg Nesterov <oleg@redhat.com> Cc: Louis Rilling <Louis.Rilling@kerlabs.com> Cc: "Eric W. Biederman" <ebiederm@xmission.com> Cc: Pavel Emelyanov <xemul@openvz.org> Cc: Sukadev Bhattiprolu <sukadev@linux.vnet.ibm.com> Cc: Roland McGrath <roland@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>		2009-04-02 19:05:02 -07:00
..
acpi
asm-arm
asm-frv	mm: use debug_kmap_atomic	2009-04-01 08:59:14 -07:00
asm-generic	gpiolib: allow GPIOs to be named	2009-04-02 19:04:51 -07:00
asm-h8300
asm-m32r	Merge branch 'header-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip	2009-03-26 16:11:41 -07:00
asm-mn10300	mm: use debug_kmap_atomic	2009-04-01 08:59:14 -07:00
crypto
drm	drm: detect hdmi monitor by hdmi identifier (v3)	2009-03-29 18:31:49 +10:00
keys
linux	pids: document task_pgrp/task_session is not safe without tasklist/rcu	2009-04-02 19:05:02 -07:00
math-emu
media	V4L/DVB (11313): v4l2-subdev: add enum_framesizes and enum_frameintervals.	2009-03-30 12:43:49 -03:00
mtd	make MTD headers use strict integer types	2009-03-26 18:14:17 +01:00
net	netlabel: Cleanup the Smack/NetLabel code to fix incoming TCP connections	2009-03-28 15:01:37 +11:00
pcmcia
rdma	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next-2.6	2009-03-26 15:54:36 -07:00
rxrpc
scsi
sound	V4L/DVB (10771): tea575x-tuner: convert it to V4L2 API	2009-03-30 12:43:02 -03:00
trace
video	fbdev: update s1d13xxxfb to differ between revisions and production ids	2009-04-01 08:59:32 -07:00
xen
Kbuild