From: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
To: linux-kernel@vger.kernel.org
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
stable@vger.kernel.org, Oleg Nesterov <oleg@redhat.com>,
Linus Torvalds <torvalds@linux-foundation.org>,
Michal Hocko <mhocko@suse.cz>
Subject: [ 20/30] wake_up_process() should be never used to wakeup a TASK_STOPPED/TRACED task
Date: Fri, 1 Mar 2013 11:45:41 -0800 [thread overview]
Message-ID: <20130301194530.159088198@linuxfoundation.org> (raw)
In-Reply-To: <20130301194527.988540148@linuxfoundation.org>
3.0-stable review patch. If anyone has any objections, please let me know.
------------------
From: Oleg Nesterov <oleg@redhat.com>
Upstream commit 9067ac85d533651b98c2ff903182a20cbb361fcb.
wake_up_process() should never wakeup a TASK_STOPPED/TRACED task.
Change it to use TASK_NORMAL and add the WARN_ON().
TASK_ALL has no other users, probably can be killed.
Signed-off-by: Oleg Nesterov <oleg@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Michal Hocko <mhocko@suse.cz>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
kernel/sched.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
--- a/kernel/sched.c
+++ b/kernel/sched.c
@@ -2778,7 +2778,8 @@ out:
*/
int wake_up_process(struct task_struct *p)
{
- return try_to_wake_up(p, TASK_ALL, 0);
+ WARN_ON(task_is_stopped_or_traced(p));
+ return try_to_wake_up(p, TASK_NORMAL, 0);
}
EXPORT_SYMBOL(wake_up_process);
next prev parent reply other threads:[~2013-03-01 19:49 UTC|newest]
Thread overview: 33+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-03-01 19:45 [ 00/30] 3.0.68-stable review Greg Kroah-Hartman
2013-03-01 19:45 ` [ 01/30] quota: autoload the quota_v2 module for QFMT_VFS_V1 quota format Greg Kroah-Hartman
2013-03-01 19:45 ` [ 02/30] iommu/amd: Initialize device table after dma_ops Greg Kroah-Hartman
2013-03-01 19:45 ` [ 03/30] posix-timer: Dont call idr_find() with out-of-range ID Greg Kroah-Hartman
2013-03-01 19:45 ` [ 04/30] ftrace: Call ftrace cleanup module notifier after all other notifiers Greg Kroah-Hartman
2013-03-01 19:45 ` [ 05/30] doc, xen: Mention earlyprintk=xen in the documentation Greg Kroah-Hartman
2013-03-01 19:45 ` [ 06/30] doc, kernel-parameters: Document console=hvc<n> Greg Kroah-Hartman
2013-03-01 19:45 ` [ 07/30] x86: Make sure we can boot in the case the BDA contains pure garbage Greg Kroah-Hartman
2013-03-01 19:45 ` [ 08/30] target: Add missing mapped_lun bounds checking during make_mappedlun setup Greg Kroah-Hartman
2013-03-01 19:45 ` [ 09/30] ocfs2: ac->ac_allow_chain_relink=0 wont disable group relink Greg Kroah-Hartman
2013-03-01 19:45 ` [ 10/30] xen-blkback: do not leak mode property Greg Kroah-Hartman
2013-03-01 19:45 ` [ 11/30] idr: fix a subtle bug in idr_get_next() Greg Kroah-Hartman
2013-03-01 19:45 ` [ 12/30] firewire: add minor number range check to fw_device_init() Greg Kroah-Hartman
2013-03-01 19:45 ` [ 13/30] sysctl: fix null checking in bin_dn_node_address() Greg Kroah-Hartman
2013-03-01 19:45 ` [ 14/30] media: rc: unlock on error in show_protocols() Greg Kroah-Hartman
2013-03-01 19:45 ` [ 15/30] ext4: fix race in ext4_mb_add_n_trim() Greg Kroah-Hartman
2013-03-01 19:45 ` [ 16/30] svcrpc: make svc_age_temp_xprts enqueue under sv_lock Greg Kroah-Hartman
2013-03-01 19:45 ` [ 17/30] vhost: fix length for cross region descriptor Greg Kroah-Hartman
2013-03-01 19:45 ` [ 18/30] ptrace: introduce signal_wake_up_state() and ptrace_signal_wake_up() Greg Kroah-Hartman
2013-03-01 19:45 ` [ 19/30] ptrace: ensure arch_ptrace/ptrace_request can never race with SIGKILL Greg Kroah-Hartman
2013-03-01 19:45 ` Greg Kroah-Hartman [this message]
2013-03-01 19:45 ` [ 21/30] unbreak automounter support on 64-bit kernel with 32-bit userspace (v2) Greg Kroah-Hartman
2013-03-01 19:45 ` [ 22/30] x86: Do not leak kernel page mapping locations Greg Kroah-Hartman
2013-03-01 19:45 ` [ 23/30] x86/apic: Work around boot failure on HP ProLiant DL980 G7 Server systems Greg Kroah-Hartman
2013-03-01 19:45 ` [ 24/30] cpuset: fix cpuset_print_task_mems_allowed() vs rename() race Greg Kroah-Hartman
2013-03-01 19:45 ` [ 25/30] cgroup: fix exit() vs rmdir() race Greg Kroah-Hartman
2013-03-01 19:45 ` [ 26/30] dca: check against empty dca_domains list before unregister provider fix Greg Kroah-Hartman
2013-03-01 19:45 ` [ 27/30] s390/kvm: Fix store status for ACRS/FPRS fix Greg Kroah-Hartman
2013-03-01 19:45 ` [ 28/30] staging: comedi: ni_labpc: correct differential channel sequence for AI commands Greg Kroah-Hartman
2013-03-01 19:45 ` [ 29/30] staging: comedi: ni_labpc: set up command4 register *after* command3 Greg Kroah-Hartman
2013-03-01 19:45 ` [ 30/30] staging: comedi: check s->async for poll(), read() and write() Greg Kroah-Hartman
2013-03-02 3:58 ` [ 00/30] 3.0.68-stable review Shuah Khan
2013-03-03 11:47 ` Satoru Takeuchi
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