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| author | LI Qingwu <Qing-wu.Li@leica-geosystems.com.cn> | 2026-01-16 11:19:05 +0000 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2026-02-11 13:42:00 +0100 |
| commit | 3f9b508b3eecc00a243edf320bd83834d6a9b482 (patch) | |
| tree | 236bbc4c971974125923cf65be436ccd22c929e3 /tools/perf/scripts/python/task-analyzer.py | |
| parent | e71e3fa90a15134113f61343392e887cd1f4bf7c (diff) | |
i2c: imx: preserve error state in block data length handler
commit b126097b0327437048bd045a0e4d273dea2910dd upstream.
When a block read returns an invalid length, zero or >I2C_SMBUS_BLOCK_MAX,
the length handler sets the state to IMX_I2C_STATE_FAILED. However,
i2c_imx_master_isr() unconditionally overwrites this with
IMX_I2C_STATE_READ_CONTINUE, causing an endless read loop that overruns
buffers and crashes the system.
Guard the state transition to preserve error states set by the length
handler.
Fixes: 5f5c2d4579ca ("i2c: imx: prevent rescheduling in non dma mode")
Signed-off-by: LI Qingwu <Qing-wu.Li@leica-geosystems.com.cn>
Cc: <stable@vger.kernel.org> # v6.13+
Reviewed-by: Stefan Eichenberger <eichest@gmail.com>
Signed-off-by: Andi Shyti <andi.shyti@kernel.org>
Link: https://lore.kernel.org/r/20260116111906.3413346-2-Qing-wu.Li@leica-geosystems.com.cn
Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'tools/perf/scripts/python/task-analyzer.py')
0 files changed, 0 insertions, 0 deletions