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>
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File | Mode | Size |
---|---|---|
Kconfig | -rw-r--r-- | 950 bytes |
Makefile | -rw-r--r-- | 155 bytes |
core.c | -rw-r--r-- | 8.4 KB |
core.h | -rw-r--r-- | 2.4 KB |
nl80211.c | -rw-r--r-- | 9.5 KB |
nl80211.h | -rw-r--r-- | 510 bytes |
radiotap.c | -rw-r--r-- | 8.5 KB |
sysfs.c | -rw-r--r-- | 1.8 KB |
sysfs.h | -rw-r--r-- | 197 bytes |
wext.c | -rw-r--r-- | 44.9 KB |
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