diff options
| author |   Dave Barach <dave@barachs.net> | 2020-04-08 12:03:32 -0400 |
|---|---|---|
| committer |   Dave Wallace <dwallacelf@gmail.com> | 2020-04-13 15:05:01 +0000 |
| commit | 943fb1559396016ea452cb07f169e0d4c28760bf (patch) | |
| tree | f207da886efd40aff6ed577d8fae968bf8ca2569 | |
| parent | 4603e34497fa9511c8fbd83b78bc5cffdd6a8997 (diff) | |
ping: fix buffer allocator error handling
The code sets f->n_vectors = n_to_send, but it can bail out of the
loop if vlib_buffer_copy(...) returns 0.
Need to fix f->n_vectors in the error return path, or we enqueue some
number of 0xfefefefe buffer indices in a debug image or worse in a
production image.
Type: fix
Signed-off-by: Dave Barach <dave@barachs.net>
Change-Id: I2d886266006c6c1c2f9ef8e3b95eb46ac6c0b3df
(cherry picked from commit 8324c55f95dd5ddbf1f5f9c47907204a12e152ef)
| -rwxr-xr-x | src/plugins/ping/ping.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/src/plugins/ping/ping.c b/src/plugins/ping/ping.c index 7045648d872..f56f44ffb26 100755 --- a/src/plugins/ping/ping.c +++ b/src/plugins/ping/ping.c @@ -933,6 +933,8 @@ ip46_enqueue_packet (vlib_main_t * vm, vlib_buffer_t * b0, u32 burst, * we did not enqueue it here yet. */ ship_and_ret: + ASSERT (n_to_send <= f->n_vectors); + f->n_vectors -= n_to_send; n_sent += f->n_vectors; vlib_put_frame_to_node (vm, lookup_node_index, f); return n_sent; |