Messages in this thread | | | From | Jia-Ju Bai <> | Subject | [BUG] drivers/spi: a possible sleep-in-atomic bug in atmel_spi_remove | Date | Tue, 12 Dec 2017 15:30:01 +0800 |
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According to drivers/spi/spi-atmel.c, the kernel module may sleep under a spinlock. The function call path is: atmel_spi_remove (acquire the spinlock) atmel_spi_release_dma dma_release_channel mutex_lock --> may sleep
I do not find a good way to fix it, so I only report. This possible bug is found by my static analysis tool (DSAC) and checked by my code review.
Thanks, Jia-Ju Bai
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