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authorLinus Torvalds <torvalds@linux-foundation.org>2016-09-01 18:23:22 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2016-09-01 18:23:22 -0700
commitb9677faf45bcf4c63431b62758bfd895404f0f3f (patch)
tree2eca2120d15f22c809a6f7faaf4fd63a4bb33e55 /kernel/fork.c
parent511a8cdb650544b7efd1bbccf7967d3153aee5f6 (diff)
parentb30069291dc7f9b9a073c33d619818fe4a8e50de (diff)
downloadlinux-linaro-stable-b9677faf45bcf4c63431b62758bfd895404f0f3f.tar.gz
Merge branch 'akpm' (patches from Andrew)
Merge fixes from Andrew Morton: "14 fixes" * emailed patches from Andrew Morton <akpm@linux-foundation.org>: rapidio/tsi721: fix incorrect detection of address translation condition rapidio/documentation/mport_cdev: add missing parameter description kernel/fork: fix CLONE_CHILD_CLEARTID regression in nscd MAINTAINERS: Vladimir has moved mm, mempolicy: task->mempolicy must be NULL before dropping final reference printk/nmi: avoid direct printk()-s from __printk_nmi_flush() treewide: remove references to the now unnecessary DEFINE_PCI_DEVICE_TABLE drivers/scsi/wd719x.c: remove last declaration using DEFINE_PCI_DEVICE_TABLE mm, vmscan: only allocate and reclaim from zones with pages managed by the buddy allocator lib/test_hash.c: fix warning in preprocessor symbol evaluation lib/test_hash.c: fix warning in two-dimensional array init kconfig: tinyconfig: provide whole choice blocks to avoid warnings kexec: fix double-free when failing to relocate the purgatory mm, oom: prevent premature OOM killer invocation for high order request
Diffstat (limited to 'kernel/fork.c')
-rw-r--r--kernel/fork.c10
1 files changed, 4 insertions, 6 deletions
diff --git a/kernel/fork.c b/kernel/fork.c
index 36c0daa03c60..beb31725f7e2 100644
--- a/kernel/fork.c
+++ b/kernel/fork.c
@@ -936,14 +936,12 @@ void mm_release(struct task_struct *tsk, struct mm_struct *mm)
deactivate_mm(tsk, mm);
/*
- * If we're exiting normally, clear a user-space tid field if
- * requested. We leave this alone when dying by signal, to leave
- * the value intact in a core dump, and to save the unnecessary
- * trouble, say, a killed vfork parent shouldn't touch this mm.
- * Userland only wants this done for a sys_exit.
+ * Signal userspace if we're not exiting with a core dump
+ * because we want to leave the value intact for debugging
+ * purposes.
*/
if (tsk->clear_child_tid) {
- if (!(tsk->flags & PF_SIGNALED) &&
+ if (!(tsk->signal->flags & SIGNAL_GROUP_COREDUMP) &&
atomic_read(&mm->mm_users) > 1) {
/*
* We don't check the error code - if userspace has