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| author | Jerry Wu <w.7erry@foxmail.com> | 2025-12-25 20:36:17 +0000 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2026-01-17 16:35:22 +0100 |
| commit | f490af47bbee02441e356a1e0b86e3b3dd5120ff (patch) | |
| tree | aea679b36f0cff3bbd49afb24a6b53d525a0cbe8 /net/ipv4 | |
| parent | b53fca69f45500eb83f379c1804275b8b578b031 (diff) | |
| download | linux-f490af47bbee02441e356a1e0b86e3b3dd5120ff.tar.gz linux-f490af47bbee02441e356a1e0b86e3b3dd5120ff.tar.bz2 linux-f490af47bbee02441e356a1e0b86e3b3dd5120ff.zip | |
net: mscc: ocelot: Fix crash when adding interface under a lag
[ Upstream commit 34f3ff52cb9fa7dbf04f5c734fcc4cb6ed5d1a95 ]
Commit 15faa1f67ab4 ("lan966x: Fix crash when adding interface under a lag")
fixed a similar issue in the lan966x driver caused by a NULL pointer dereference.
The ocelot_set_aggr_pgids() function in the ocelot driver has similar logic
and is susceptible to the same crash.
This issue specifically affects the ocelot_vsc7514.c frontend, which leaves
unused ports as NULL pointers. The felix_vsc9959.c frontend is unaffected as
it uses the DSA framework which registers all ports.
Fix this by checking if the port pointer is valid before accessing it.
Fixes: 528d3f190c98 ("net: mscc: ocelot: drop the use of the "lags" array")
Signed-off-by: Jerry Wu <w.7erry@foxmail.com>
Reviewed-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Link: https://patch.msgid.link/tencent_75EF812B305E26B0869C673DD1160866C90A@qq.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'net/ipv4')
0 files changed, 0 insertions, 0 deletions