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| author | NeilBrown <neilb@suse.de> | 2014-04-09 12:25:43 +1000 |
|---|---|---|
| committer | NeilBrown <neilb@suse.de> | 2014-04-09 14:42:23 +1000 |
| commit | da1aab3dca9aa88ae34ca392470b8943159e25fe (patch) | |
| tree | 435a7a9ea35a3a68b6943e4bbf24b6c9b09281e3 /kernel/rcu | |
| parent | 035328c202d26a824b8632fd3b00635db5aee5a2 (diff) | |
| download | op-kernel-dev-da1aab3dca9aa88ae34ca392470b8943159e25fe.zip op-kernel-dev-da1aab3dca9aa88ae34ca392470b8943159e25fe.tar.gz | |
md/raid1: r1buf_pool_alloc: free allocate pages when subsequent allocation fails.
When performing a user-request check/repair (MD_RECOVERY_REQUEST is set)
on a raid1, we allocate multiple bios each with their own set of pages.
If the page allocations for one bio fails, we currently do *not* free
the pages allocated for the previous bios, nor do we free the bio itself.
This patch frees all the already-allocate pages, and makes sure that
all the bios are freed as well.
This bug can cause a memory leak which can ultimately OOM a machine.
It was introduced in 3.10-rc1.
Fixes: a07876064a0b73ab5ef1ebcf14b1cf0231c07858
Cc: Kent Overstreet <koverstreet@google.com>
Cc: stable@vger.kernel.org (3.10+)
Reported-by: Russell King - ARM Linux <linux@arm.linux.org.uk>
Signed-off-by: NeilBrown <neilb@suse.de>
Diffstat (limited to 'kernel/rcu')
0 files changed, 0 insertions, 0 deletions
