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authorLars Ellenberg <lars.ellenberg@linbit.com>2013-10-23 12:59:18 +0400
committerJens Axboe <axboe@kernel.dk>2013-11-08 20:10:28 +0400
commitd2da5b0cb522c48f8e2f311e6e9b212535371b56 (patch)
treeb2d883aa031c9ed894a0dc797400e312226e8251 /drivers/block/drbd/drbd_req.c
parent57737adc965e45fcb03662fe6f93f6efb19e2c0a (diff)
downloadlinux-d2da5b0cb522c48f8e2f311e6e9b212535371b56.tar.xz
drbd: fix decoding of bitmap vli rle for device sizes > 64 TB
Symptoms: disconnect after bitmap exchange due to bitmap overflow (e:49731075554) while decoding bm RLE packet In the decoding step of the variable length integer run length encoding there was potentially an uncatched bitshift by wordsize (variable >> 64). The result of which is "undefined" :( (only "sometimes" the result is the desired 0) Fix: don't do any bit shift magic for shift == 64, just assign. Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com> Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'drivers/block/drbd/drbd_req.c')
0 files changed, 0 insertions, 0 deletions