From da1aab3dca9aa88ae34ca392470b8943159e25fe Mon Sep 17 00:00:00 2001 From: NeilBrown Date: Wed, 9 Apr 2014 12:25:43 +1000 Subject: [PATCH] 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 Cc: stable@vger.kernel.org (3.10+) Reported-by: Russell King - ARM Linux Signed-off-by: NeilBrown --- Reading git-format-patch failed