Commit de0d9641 authored Apr 16, 2005 by Roland Dreier Committed by Linus Torvalds Apr 16, 2005

[PATCH] IB: Fix FMR pool crash



Mask bits correctly from jhash result in ib_fmr_hash() so that the
computed bucket index is within our hash table.  This fixes an SDP
crash.

Signed-off-by: Roland Dreier <roland@topspin.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

parent dfe7cc7e

drivers/infiniband/core/fmr_pool.c

+2 −3

Original line number	Diff line number	Diff line
		@@ -103,9 +103,8 @@ struct ib_fmr_pool {

		static inline u32 ib_fmr_hash(u64 first_page)
		{
		return jhash_2words((u32) first_page,
		(u32) (first_page >> 32),
		0);
		return jhash_2words((u32) first_page, (u32) (first_page >> 32), 0) &
		(IB_FMR_HASH_SIZE - 1);
		}

		/* Caller must hold pool_lock */