Re: dm-crypt with no_read_workqueue and no_write_workqueue + btrfs scrub = BUG()

2020-12-24 Thread Ignat Korchagin
On Wed, Dec 23, 2020 at 8:57 PM Herbert Xu wrote: > > On Wed, Dec 23, 2020 at 04:37:34PM +0100, Maciej S. Szmigiero wrote: > > > > It looks like to me that the skcipher API might not be safe to > > call from a softirq context, after all. > > skcipher is safe to use in a softirq. The problem is on

Re: dm-crypt with no_read_workqueue and no_write_workqueue + btrfs scrub = BUG()

2020-12-23 Thread Ignat Korchagin
On Wed, Dec 23, 2020 at 9:20 PM Maciej S. Szmigiero wrote: > > On 23.12.2020 22:09, Ignat Korchagin wrote: > (..) > > I've been looking into this for the last couple of days because of > > other reports [1]. > > Just finished testing a possible solution. Will sub

Re: dm-crypt with no_read_workqueue and no_write_workqueue + btrfs scrub = BUG()

2020-12-23 Thread Ignat Korchagin
On Wed, Dec 23, 2020 at 3:37 PM Maciej S. Szmigiero wrote: > > On 14.12.2020 19:11, Maciej S. Szmigiero wrote: > > Hi, > > > > I hit a reproducible BUG() when scrubbing a btrfs fs on top of > > a dm-crypt device with no_read_workqueue and no_write_workqueue > > flags enabled. > > Still happens on