github-mirror/linux
1
0
Fork 0
mirror of https://github.com/torvalds/linux.git synced 2026-09-22 12:44:03 +02:00
Code Issues Actions Packages Projects Releases Wiki Activity Graph

ublk: clear auto buf reg before updating io->buf in batch commit

Browse Source 
ublk_batch_commit_io() stored the new auto_buf into io->buf before
calling ublk_clear_auto_buf_reg(). Clear takes the unregister index
from io->buf.auto_reg, so it could drop the new slot and leave the
old registered buffer behind.

Fixes: 1e500e106d ("ublk: handle UBLK_U_IO_COMMIT_IO_CMDS")
Signed-off-by: Yang Xiuwei <yangxiuwei@kylinos.cn>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Yang Xiuwei 2026-07-30 09:09:10 +08:00 committed by Jens Axboe
parent 758b86f7bc
commit af0955c8f2
1 changed files with 1 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
drivers/block/ublk_drv.c
View File

@ -3784,11 +3784,11 @@ static int ublk_batch_commit_io(struct ublk_queue *ubq,
ret = ublk_batch_commit_io_check(ubq, io, &buf);
if (!ret) {
io->res = elem->result;
io->buf = buf;
req = ublk_fill_io_cmd(io, data->cmd);
if (auto_reg)
ublk_clear_auto_buf_reg(io, data->cmd, &buf_idx);
io->buf = buf;
compl = ublk_need_complete_req(data->ub, io);
}
ublk_io_unlock(io);