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authorNeilBrown <neilb@suse.de>2013-07-24 15:37:42 +1000
committerNeilBrown <neilb@suse.de>2013-07-25 16:46:53 +1000
commit0eb25bb027a100f5a9df8991f2f628e7d851bc1e (patch)
tree3e00b7a00db585cf166899506d5fda04ab06a17e /drivers/rpmsg
parent30bc9b53878a9921b02e3b5bc4283ac1c6de102a (diff)
downloadlinux-0eb25bb027a100f5a9df8991f2f628e7d851bc1e.tar.bz2
md/raid10: remove use-after-free bug.
We always need to be careful when calling generic_make_request, as it can start a chain of events which might free something that we are using. Here is one place I wasn't careful enough. If the wbio2 is not in use, then it might get freed at the first generic_make_request call. So perform all necessary tests first. This bug was introduced in 3.3-rc3 (24afd80d99) and can cause an oops, so fix is suitable for any -stable since then. Cc: stable@vger.kernel.org (3.3+) Signed-off-by: NeilBrown <neilb@suse.de>
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