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-- | 5.8 KB |
| Makefile | -rw-r--r-- | 1.1 KB |
| allocpercpu.c | -rw-r--r-- | 3.6 KB |
| backing-dev.c | -rw-r--r-- | 2.0 KB |
| bootmem.c | -rw-r--r-- | 12.0 KB |
| bounce.c | -rw-r--r-- | 6.4 KB |
| fadvise.c | -rw-r--r-- | 2.6 KB |
| filemap.c | -rw-r--r-- | 67.7 KB |
| filemap_xip.c | -rw-r--r-- | 10.1 KB |
| fremap.c | -rw-r--r-- | 6.1 KB |
| highmem.c | -rw-r--r-- | 8.1 KB |
| hugetlb.c | -rw-r--r-- | 30.7 KB |
| internal.h | -rw-r--r-- | 1.3 KB |
| madvise.c | -rw-r--r-- | 9.5 KB |
| memory.c | -rw-r--r-- | 73.5 KB |
| memory_hotplug.c | -rw-r--r-- | 14.0 KB |
| mempolicy.c | -rw-r--r-- | 51.1 KB |
| mempool.c | -rw-r--r-- | 9.0 KB |
| migrate.c | -rw-r--r-- | 22.8 KB |
| mincore.c | -rw-r--r-- | 5.7 KB |
| mlock.c | -rw-r--r-- | 5.6 KB |
| mmap.c | -rw-r--r-- | 57.8 KB |
| mmzone.c | -rw-r--r-- | 750 bytes |
| mprotect.c | -rw-r--r-- | 7.4 KB |
| mremap.c | -rw-r--r-- | 10.8 KB |
| msync.c | -rw-r--r-- | 2.4 KB |
| nommu.c | -rw-r--r-- | 33.1 KB |
| oom_kill.c | -rw-r--r-- | 13.2 KB |
| page-writeback.c | -rw-r--r-- | 34.7 KB |
| page_alloc.c | -rw-r--r-- | 123.8 KB |
| page_io.c | -rw-r--r-- | 3.4 KB |
| page_isolation.c | -rw-r--r-- | 3.4 KB |
| pdflush.c | -rw-r--r-- | 6.4 KB |
| prio_tree.c | -rw-r--r-- | 6.3 KB |
| quicklist.c | -rw-r--r-- | 2.3 KB |
| readahead.c | -rw-r--r-- | 13.3 KB |
| rmap.c | -rw-r--r-- | 26.5 KB |
| shmem.c | -rw-r--r-- | 65.2 KB |
| shmem_acl.c | -rw-r--r-- | 4.6 KB |
| slab.c | -rw-r--r-- | 115.2 KB |
| slob.c | -rw-r--r-- | 15.0 KB |
| slub.c | -rw-r--r-- | 96.8 KB |
| sparse-vmemmap.c | -rw-r--r-- | 4.2 KB |
| sparse.c | -rw-r--r-- | 10.2 KB |
| swap.c | -rw-r--r-- | 13.3 KB |
| swap_state.c | -rw-r--r-- | 9.4 KB |
| swapfile.c | -rw-r--r-- | 43.9 KB |
| thrash.c | -rw-r--r-- | 2.0 KB |
| tiny-shmem.c | -rw-r--r-- | 3.1 KB |
| truncate.c | -rw-r--r-- | 12.9 KB |
| util.c | -rw-r--r-- | 2.7 KB |
| vmalloc.c | -rw-r--r-- | 19.1 KB |
| vmscan.c | -rw-r--r-- | 53.0 KB |
| vmstat.c | -rw-r--r-- | 19.7 KB |
Computing file changes ...
