Messages in this thread | | | From | Jia-Ju Bai <> | Subject | [BUG] sound: pci: trident: a possible data race | Date | Wed, 3 Oct 2018 20:50:25 +0800 |
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CPU0: snd_trident_hw_free snd_trident_free_voice line 3870: spin_lock_irqsave() line 3881: voice->substream = NULL; [WRITE] CPU1: snd_trident_interrupt line 3798: snd_pcm_period_elapsed(voice->substream); [READ]
As for voice->substream, the WRITE operation in CPU0 is performed with holding a spinlock, but the READ operation in CPU1 is performed without holding this spinlock, so there may exist a data race.
Best wishes, Jia-Ju Bai
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