diff options
| author | Breno Leitao <leitao@debian.org> | 2026-01-26 09:50:29 -0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2026-02-11 13:42:00 +0100 |
| commit | 3bc293d5b56502068481478842f57b3d96e432c7 (patch) | |
| tree | 95ee2b9fe50d5c0b139723ac84e13781c3f7ce03 /include/net/aligned_data.h | |
| parent | 2d3c0122e96111d38382f7a1ac00848865c969f6 (diff) | |
spi: tegra210-quad: Protect curr_xfer in tegra_qspi_combined_seq_xfer
[ Upstream commit bf4528ab28e2bf112c3a2cdef44fd13f007781cd ]
The curr_xfer field is read by the IRQ handler without holding the lock
to check if a transfer is in progress. When clearing curr_xfer in the
combined sequence transfer loop, protect it with the spinlock to prevent
a race with the interrupt handler.
Protect the curr_xfer clearing at the exit path of
tegra_qspi_combined_seq_xfer() with the spinlock to prevent a race
with the interrupt handler that reads this field.
Without this protection, the IRQ handler could read a partially updated
curr_xfer value, leading to NULL pointer dereference or use-after-free.
Fixes: b4e002d8a7ce ("spi: tegra210-quad: Fix timeout handling")
Signed-off-by: Breno Leitao <leitao@debian.org>
Tested-by: Jon Hunter <jonathanh@nvidia.com>
Acked-by: Jon Hunter <jonathanh@nvidia.com>
Acked-by: Thierry Reding <treding@nvidia.com>
Link: https://patch.msgid.link/20260126-tegra_xfer-v2-4-6d2115e4f387@debian.org
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'include/net/aligned_data.h')
0 files changed, 0 insertions, 0 deletions