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| author | Stefan Wahren <wahrenst@gmx.net> | 2023-12-06 15:12:20 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2023-12-20 15:38:00 +0100 |
| commit | 9ee9347382ea11f09ee9bbf1e5d07592f8a62eea (patch) | |
| tree | 03873dcd397c05840e295b7a7f2c3ef6d1f3c2ab /scripts/sign-file.c | |
| parent | f93c1f58eb68bada8c86088104efe14cfe735957 (diff) | |
qca_debug: Prevent crash on TX ring changes
[ Upstream commit f4e6064c97c050bd9904925ff7d53d0c9954fc7b ]
The qca_spi driver stop and restart the SPI kernel thread
(via ndo_stop & ndo_open) in case of TX ring changes. This is
a big issue because it allows userspace to prevent restart of
the SPI kernel thread (via signals). A subsequent change of
TX ring wrongly assume a valid spi_thread pointer which result
in a crash.
So prevent this by stopping the network traffic handling and
temporary park the SPI thread.
Fixes: 291ab06ecf67 ("net: qualcomm: new Ethernet over SPI driver for QCA7000")
Signed-off-by: Stefan Wahren <wahrenst@gmx.net>
Link: https://lore.kernel.org/r/20231206141222.52029-2-wahrenst@gmx.net
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'scripts/sign-file.c')
0 files changed, 0 insertions, 0 deletions