Re: Bug in __mmdrop() triggered by io-uring on v5.11-rc1

2020-12-29 Thread Christian Brauner
On Mon, Dec 28, 2020 at 05:00:53PM -0700, Jens Axboe wrote: > On 12/28/20 9:54 AM, Christian Brauner wrote: > > Hey everyone, > > > > The following oops can be triggered on a pristine v5.11-rc1 which I > > discovered > > while rebasing my idmapped mount patchset onto v5.11-rc1: > > > > [ 577.71

Re: Bug in __mmdrop() triggered by io-uring on v5.11-rc1

2020-12-28 Thread Jens Axboe
On 12/28/20 9:54 AM, Christian Brauner wrote: > Hey everyone, > > The following oops can be triggered on a pristine v5.11-rc1 which I discovered > while rebasing my idmapped mount patchset onto v5.11-rc1: > > [ 577.716339][ T7216] Hardware name: QEMU Standard PC (Q35 + ICH9, > 2009)/LXD, BIOS 0

Bug in __mmdrop() triggered by io-uring on v5.11-rc1

2020-12-28 Thread Christian Brauner
Hey everyone, The following oops can be triggered on a pristine v5.11-rc1 which I discovered while rebasing my idmapped mount patchset onto v5.11-rc1: [ 577.716339][ T7216] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009)/LXD, BIOS 0.0.0 02/06/2015 [ 577.718584][ T7216] Call Trace: [ 577.71