Commit 5b88597a authored by Kozlowski Mateusz's avatar Kozlowski Mateusz Committed by Tomasz Zawadzki
Browse files

bdev: Initialize md_buf for zero copy start request 



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: default avatarKozlowski 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: default avatarSPDK CI Jenkins <sys_sgci@intel.com>
Reviewed-by: default avatarShuhei Matsumoto <shuhei.matsumoto.xt@hitachi.com>
Reviewed-by: default avatarBen Walker <benjamin.walker@intel.com>
parent fa540f18

lib/bdev/bdev.c

+1 −0
Original line number Diff line number Diff line
@@ -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.iovs = NULL;

	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.commit = 0;

	bdev_io->u.bdev.zcopy.start = 1;