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| author | Magnus Karlsson | 2018-06-29 09:48:17 +0200 |
|---|---|---|
| committer | Alexei Starovoitov | 2018-07-03 03:37:11 +0200 |
| commit | 20b52a75166086a40d838397ef3db28a4f2c5998 (patch) | |
| tree | 5c6f0af2b630f695698e9c08459bad13d8abff26 /net/xdp/xsk.c | |
| parent | Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/shli/md (diff) | |
| download | kernel-qcow2-linux-20b52a75166086a40d838397ef3db28a4f2c5998.tar.gz kernel-qcow2-linux-20b52a75166086a40d838397ef3db28a4f2c5998.tar.xz kernel-qcow2-linux-20b52a75166086a40d838397ef3db28a4f2c5998.zip | |
xsk: fix potential lost completion message in SKB path
The code in xskq_produce_addr erroneously checked if there
was up to LAZY_UPDATE_THRESHOLD amount of space in the completion
queue. It only needs to check if there is one slot left in the
queue. This bug could under some circumstances lead to a WARN_ON_ONCE
being triggered and the completion message to user space being lost.
Fixes: 35fcde7f8deb ("xsk: support for Tx")
Signed-off-by: Magnus Karlsson <magnus.karlsson@intel.com>
Reported-by: Pavel Odintsov <pavel@fastnetmon.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Diffstat (limited to 'net/xdp/xsk.c')
0 files changed, 0 insertions, 0 deletions