diff options
| author | Amit Cohen <[email protected]> | 2021-11-23 09:52:56 +0200 |
|---|---|---|
| committer | David S. Miller <[email protected]> | 2021-11-23 11:46:18 +0000 |
| commit | 63b08b1f6834bbb0b4f7783bf63b80c8c8e9a047 (patch) | |
| tree | 7d44ef1bf1fe5c50e8983c20a402ea1625991667 /lib/test_overflow.c | |
| parent | ce4995bc6c8eec9685707e36c3f38aea3c8694fa (diff) | |
mlxsw: spectrum: Protect driver from buggy firmware
When processing port up/down events generated by the device's firmware,
the driver protects itself from events reported for non-existent local
ports, but not the CPU port (local port 0), which exists, but lacks a
netdev.
This can result in a NULL pointer dereference when calling
netif_carrier_{on,off}().
Fix this by bailing early when processing an event reported for the CPU
port. Problem was only observed when running on top of a buggy emulator.
Fixes: 28b1987ef506 ("mlxsw: spectrum: Register CPU port with devlink")
Signed-off-by: Amit Cohen <[email protected]>
Signed-off-by: Ido Schimmel <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
Diffstat (limited to 'lib/test_overflow.c')
0 files changed, 0 insertions, 0 deletions