Gitweb: https://sourceware.org/git/?p=lvm2.git;a=commitdiff;h=c5ef76bf27337406d48990... Commit: c5ef76bf27337406d48990acbfdaa869fd30f47b Parent: 7272fd221096dbfd07e7ad11f0c938b453de2904 Author: Alasdair G Kergon agk@redhat.com AuthorDate: Tue Dec 12 12:57:25 2017 +0000 Committer: Alasdair G Kergon agk@redhat.com CommitterDate: Tue Dec 12 12:57:25 2017 +0000

device: Internal error if writing 0 bytes to dev.

--- lib/device/dev-io.c | 5 +++++ 1 files changed, 5 insertions(+), 0 deletions(-)

diff --git a/lib/device/dev-io.c b/lib/device/dev-io.c index a9a9aac..dc9ad13 100644 --- a/lib/device/dev-io.c +++ b/lib/device/dev-io.c @@ -804,6 +804,11 @@ int dev_write(struct device *dev, uint64_t offset, size_t len, dev_io_reason_t r if (!_dev_is_valid(dev)) return 0;

+ if (!len) { + log_error(INTERNAL_ERROR "Attempted to write 0 bytes to %s at " FMTu64, dev_name(dev), offset); + return 0; + } + where.dev = dev; where.start = offset; where.size = len;