ivampiresp/Spdk
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

bdev: Initialize md_buf for zero copy start request

Browse Source 
In emulated zero copy mode on devices with separate metadata support
the start zero copy request could assert after read completion,
during _bdev_io_unset_bounce_buf; the original iovs would be NULL, but
original md_buf would have garbage data.

Signed-off-by: Kozlowski Mateusz <mateusz.kozlowski@intel.com>
Change-Id: Ia52b012c1b7462ebe490c29f5493168775646848
Reviewed-on: https://review.gerrithub.io/c/spdk/spdk/+/473455
Community-CI: Broadcom SPDK FC-NVMe CI <spdk-ci.pdl@broadcom.com>
Tested-by: SPDK CI Jenkins <sys_sgci@intel.com>
Reviewed-by: Shuhei Matsumoto <shuhei.matsumoto.xt@hitachi.com>
Reviewed-by: Ben Walker <benjamin.walker@intel.com>
This commit is contained in:
Kozlowski Mateusz 2019-11-06 09:54:47 -05:00 committed by Tomasz Zawadzki
parent fa540f18d8
commit 5b88597ac6
1 changed files with 1 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

1
lib/bdev/bdev.c
View File

@ -3152,6 +3152,7 @@ spdk_bdev_zcopy_start(struct spdk_bdev_desc *desc, struct spdk_io_channel *ch,
bdev_io->u.bdev.offset_blocks = offset_blocks; bdev_io->u.bdev.offset_blocks = offset_blocks;
bdev_io->u.bdev.iovs = NULL; bdev_io->u.bdev.iovs = NULL;
bdev_io->u.bdev.iovcnt = 0; bdev_io->u.bdev.iovcnt = 0;
bdev_io->u.bdev.md_buf = NULL;
bdev_io->u.bdev.zcopy.populate = populate ? 1 : 0; bdev_io->u.bdev.zcopy.populate = populate ? 1 : 0;
bdev_io->u.bdev.zcopy.commit = 0; bdev_io->u.bdev.zcopy.commit = 0;
bdev_io->u.bdev.zcopy.start = 1; bdev_io->u.bdev.zcopy.start = 1;