From de0d9641c4f164009b62ecc342f9776d44e78b6a Mon Sep 17 00:00:00 2001 From: Roland Dreier Date: Sat, 16 Apr 2005 15:26:10 -0700 Subject: [PATCH] [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 Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- drivers/infiniband/core/fmr_pool.c | 5 ++--- 1 file changed, 2 insertions(+), 3 deletions(-) diff --git a/drivers/infiniband/core/fmr_pool.c b/drivers/infiniband/core/fmr_pool.c index 2e9469f18926..59ee001ff05b 100644 --- a/drivers/infiniband/core/fmr_pool.c +++ b/drivers/infiniband/core/fmr_pool.c @@ -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 */ -- 2.20.1