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authorKirill Korotaev <dev@openvz.org>2006-12-06 20:32:27 -0800
committerLinus Torvalds <torvalds@woody.osdl.org>2006-12-07 08:39:22 -0800
commitb43a57bb4dae72e8f7232e7c821a8799eda30022 (patch)
tree4293286b44c8b11bac6a03c4ddfe75aea40aa089 /net/bridge
parenta3eea484f7a1aadb70ed6665338026a09ad6ce85 (diff)
[PATCH] OOM can panic due to processes stuck in __alloc_pages()
OOM can panic due to the processes stuck in __alloc_pages() doing infinite rebalance loop while no memory can be reclaimed. OOM killer tries to kill some processes, but unfortunetaly, rebalance label was moved by someone below the TIF_MEMDIE check, so buddy allocator doesn't see that process is OOM-killed and it can simply fail the allocation :/ Observed in reality on RHEL4(2.6.9)+OpenVZ kernel when a user doing some memory allocation tricks triggered OOM panic. Signed-off-by: Denis Lunev <den@sw.ru> Signed-off-by: Kirill Korotaev <dev@openvz.org> Cc: Nick Piggin <nickpiggin@yahoo.com.au> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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