https://github.com/torvalds/linux
Revision c283610e44ec4ccc412dde8b71cf297ed9515f2f authored by Kirill A. Shutemov on 21 November 2013, 22:32:09 UTC, committed by Linus Torvalds on 22 November 2013, 00:42:28 UTC
There are two code paths how page with pmd page table can be freed:
pmd_free() and pmd_free_tlb().

I've missed the second one and didn't add page table destructor call
there.  It leads to leak of page->ptl for pmd page tables, if
dynamically allocated page->ptl is in use.

The patch adds the missed destructor and modifies documentation
accordingly.

Signed-off-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Reported-by: Andrey Vagin <avagin@openvz.org>
Tested-by: Andrey Vagin <avagin@openvz.org>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
1 parent 3a72660
History
Tip revision: c283610e44ec4ccc412dde8b71cf297ed9515f2f authored by Kirill A. Shutemov on 21 November 2013, 22:32:09 UTC
x86, mm: do not leak page->ptl for pmd page tables
Tip revision: c283610
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.gitignore -rw-r--r-- 1.1 KB
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COPYING -rw-r--r-- 18.3 KB
CREDITS -rw-r--r-- 93.2 KB
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Kconfig -rw-r--r-- 252 bytes
MAINTAINERS -rw-r--r-- 260.3 KB
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