Re: [PATCH] tty: hvc: Fix data abort due to race in hvc_open

2020-05-20 Thread rananta
On 2020-05-20 02:38, Jiri Slaby wrote: On 15. 05. 20, 1:22, rana...@codeaurora.org wrote: On 2020-05-13 00:04, Greg KH wrote: On Tue, May 12, 2020 at 02:39:50PM -0700, rana...@codeaurora.org wrote: On 2020-05-12 01:25, Greg KH wrote: > On Tue, May 12, 2020 at 09:22:15AM +0200, Jiri Slaby wrote

Re: [PATCH v2] tty: hvc: Fix data abort due to race in hvc_open

2020-05-20 Thread rananta
On 2020-05-20 01:59, Jiri Slaby wrote: On 20. 05. 20, 8:47, Raghavendra Rao Ananta wrote: Potentially, hvc_open() can be called in parallel when two tasks calls open() on /dev/hvcX. In such a scenario, if the hp->ops->notifier_add() callback in the function fails, where it sets the tty->driver

Re: [PATCH] tty: hvc: Fix data abort due to race in hvc_open

2020-05-15 Thread rananta
On 2020-05-15 00:30, Greg KH wrote: On Thu, May 14, 2020 at 04:22:10PM -0700, rana...@codeaurora.org wrote: On 2020-05-13 00:04, Greg KH wrote: > On Tue, May 12, 2020 at 02:39:50PM -0700, rana...@codeaurora.org wrote: > > On 2020-05-12 01:25, Greg KH wrote: > > > On Tue, May 12, 2020 at 09:22:15

Re: [PATCH] tty: hvc: Fix data abort due to race in hvc_open

2020-05-14 Thread rananta
On 2020-05-13 00:04, Greg KH wrote: On Tue, May 12, 2020 at 02:39:50PM -0700, rana...@codeaurora.org wrote: On 2020-05-12 01:25, Greg KH wrote: > On Tue, May 12, 2020 at 09:22:15AM +0200, Jiri Slaby wrote: > > On 11. 05. 20, 9:39, Greg KH wrote: > > > On Mon, May 11, 2020 at 12:23:58AM -0700, ra

Re: [PATCH] tty: hvc: Fix data abort due to race in hvc_open

2020-05-12 Thread rananta
On 2020-05-12 01:25, Greg KH wrote: On Tue, May 12, 2020 at 09:22:15AM +0200, Jiri Slaby wrote: On 11. 05. 20, 9:39, Greg KH wrote: > On Mon, May 11, 2020 at 12:23:58AM -0700, rana...@codeaurora.org wrote: >> On 2020-05-09 23:48, Greg KH wrote: >>> On Sat, May 09, 2020 at 06:30:56PM -0700, rana.

Re: [PATCH] tty: hvc: Fix data abort due to race in hvc_open

2020-05-11 Thread rananta
On 2020-05-11 00:23, rana...@codeaurora.org wrote: On 2020-05-09 23:48, Greg KH wrote: On Sat, May 09, 2020 at 06:30:56PM -0700, rana...@codeaurora.org wrote: On 2020-05-06 02:48, Greg KH wrote: > On Mon, Apr 27, 2020 at 08:26:01PM -0700, Raghavendra Rao Ananta wrote: > > Potentially, hvc_open(

Re: [PATCH] tty: hvc: Fix data abort due to race in hvc_open

2020-05-11 Thread rananta
On 2020-05-09 23:48, Greg KH wrote: On Sat, May 09, 2020 at 06:30:56PM -0700, rana...@codeaurora.org wrote: On 2020-05-06 02:48, Greg KH wrote: > On Mon, Apr 27, 2020 at 08:26:01PM -0700, Raghavendra Rao Ananta wrote: > > Potentially, hvc_open() can be called in parallel when two tasks calls > >

Re: [PATCH] tty: hvc: Fix data abort due to race in hvc_open

2020-05-09 Thread rananta
On 2020-05-06 02:48, Greg KH wrote: On Mon, Apr 27, 2020 at 08:26:01PM -0700, Raghavendra Rao Ananta wrote: Potentially, hvc_open() can be called in parallel when two tasks calls open() on /dev/hvcX. In such a scenario, if the hp->ops->notifier_add() callback in the function fails, where it se