Re: [PATCH] NCR5380: Fix a possible sleep-in-atomic bug in NCR5380_poll_politely2

Thanks for your reply :) On 2017/12/12 11:38, Finn Thain wrote: On Tue, 12 Dec 2017, Jia-Ju Bai wrote: From: Jia-Ju Bai The kernel module may sleep under a spinlock. The spinlock is always taken in irq mode, and the schedule_timeout_uninterruptible() is conditional on !irqs_disabled(). I

Re: [PATCH] NCR5380: Fix a possible sleep-in-atomic bug in NCR5380_poll_politely2

On Tue, 12 Dec 2017, Jia-Ju Bai wrote: > From: Jia-Ju Bai > > The kernel module may sleep under a spinlock. The spinlock is always taken in irq mode, and the schedule_timeout_uninterruptible() is conditional on !irqs_disabled(). > The function call paths are: > NCR5380_select (acquire the spi

[PATCH] NCR5380: Fix a possible sleep-in-atomic bug in NCR5380_poll_politely2

From: Jia-Ju Bai The kernel module may sleep under a spinlock. The function call paths are: NCR5380_select (acquire the spinlock) NCR5380_reselect NCR5380_poll_politely NCR5380_poll_politely2 schedule_timeout_uninterruptible --> may sleep NCR5380_abort (acquire the spinlock)