Revision a98fdcef941e107eeabae622d85a1f476f25a160 authored by Oleg Nesterov on 14 January 2008, 21:02:37 UTC, committed by Linus Torvalds on 14 January 2008, 21:23:00 UTC
Commit 84427eaef1fb91704c7112bdb598c810003b99f3 (remove task_ppid_nr_ns)
moved the task_tgid_nr_ns(task->real_parent) outside of lock_task_sighand().
This is wrong, ->real_parent could be freed/reused.

Both ->parent/real_parent point to nothing after __exit_signal() because
we remove the child from ->children list, and thus the child can't be
reparented when its parent exits.

rcu_read_lock() protects ->parent/real_parent, but _only_ if we know it was
valid before we take rcu lock.

Revert this part of the patch.

Signed-off-by: Oleg Nesterov <oleg@tv-sign.ru>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
1 parent 4fd3670
History
File Mode Size
Makefile -rw-r--r-- 102 bytes
README.hp300 -rw-r--r-- 501 bytes
config.c -rw-r--r-- 6.5 KB
hp300map.map -rw-r--r-- 5.4 KB
ksyms.c -rw-r--r-- 202 bytes
reboot.S -rw-r--r-- 513 bytes
time.c -rw-r--r-- 1.9 KB
time.h -rw-r--r-- 103 bytes

README.hp300

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