diff options
| author | Ming Lei <[email protected]> | 2020-08-17 10:00:55 +0000 |
|---|---|---|
| committer | Jens Axboe <[email protected]> | 2020-09-03 02:59:40 +0000 |
| commit | 7e24969022cbd61ddc586f14824fc205661bb124 (patch) | |
| tree | 64854a523b26e7ae9f058097b5d0e5bbacaf4bd7 /net/switchdev/switchdev.c | |
| parent | blk-stat: make q->stats->lock irqsafe (diff) | |
| download | kernel-7e24969022cbd61ddc586f14824fc205661bb124.tar.gz kernel-7e24969022cbd61ddc586f14824fc205661bb124.zip | |
block: allow for_each_bvec to support zero len bvec
Block layer usually doesn't support or allow zero-length bvec. Since
commit 1bdc76aea115 ("iov_iter: use bvec iterator to implement
iterate_bvec()"), iterate_bvec() switches to bvec iterator. However,
Al mentioned that 'Zero-length segments are not disallowed' in iov_iter.
Fixes for_each_bvec() so that it can move on after seeing one zero
length bvec.
Fixes: 1bdc76aea115 ("iov_iter: use bvec iterator to implement iterate_bvec()")
Reported-by: syzbot <[email protected]>
Signed-off-by: Ming Lei <[email protected]>
Tested-by: Tetsuo Handa <[email protected]>
Cc: Al Viro <[email protected]>
Cc: Matthew Wilcox <[email protected]>
Cc: <[email protected]>
Link: https://www.mail-archive.com/[email protected]/msg2262077.html
Signed-off-by: Jens Axboe <[email protected]>
Diffstat (limited to 'net/switchdev/switchdev.c')
0 files changed, 0 insertions, 0 deletions