On 10/17/2013 06:41 AM, Douglas Gilbert wrote:
> That seems to be the case. Vaughan acknowledged the
> problem and forwarded it to me 8 days ago. Yes, it
> seems to be a "no-no" to hold a any kernel semaphore
> when returning to the user space; in this case from
> sg_open(). I was hoping a revised
On 13-10-16 09:24 AM, James Bottomley wrote:
On Tue, 2013-10-08 at 09:45 -0400, Douglas Gilbert wrote:
On 13-10-08 02:44 AM, vaughan wrote:
Hi Madper,
CC to Douglas to get comments.
I use the rw_semaphore o_sem to protect excl open, introduced in commit
15b06f9a02406e5460001db6d5af5c738cd3d4e7
On Tue, 2013-10-08 at 09:45 -0400, Douglas Gilbert wrote:
> On 13-10-08 02:44 AM, vaughan wrote:
> > Hi Madper,
> >
> > CC to Douglas to get comments.
> > I use the rw_semaphore o_sem to protect excl open, introduced in commit
> > 15b06f9a02406e5460001db6d5af5c738cd3d4e7 since v3.12-rc1.
> > Is it
On 13-10-08 02:44 AM, vaughan wrote:
Hi Madper,
CC to Douglas to get comments.
I use the rw_semaphore o_sem to protect excl open, introduced in commit
15b06f9a02406e5460001db6d5af5c738cd3d4e7 since v3.12-rc1.
Is it forbidden to do like that in kernel?...
It appears you can not (allow sg_open()
Hi Madper,
CC to Douglas to get comments.
I use the rw_semaphore o_sem to protect excl open, introduced in commit
15b06f9a02406e5460001db6d5af5c738cd3d4e7 since v3.12-rc1.
Is it forbidden to do like that in kernel?...
Regards,
Vaughan
On 10/08/2013 01:57 PM, Madper Xie wrote:
> Howdy Vaughan Cao
Howdy Vaughan Cao,
I can't meet this issue on both 3.11 and 3.11.4. There are only four
patches between 3.11 and 3.12-rc2 and you are the author. Will you
please check them if you have time.
c...@redhat.com writes:
> Hi all,
>With kernel3.12-rc2 the dmesg shows following logs:
> [
Hi all,
With kernel3.12-rc2 the dmesg shows following logs:
[ 12.864680]
[ 12.864681] [ BUG: lock held when returning to user space! ]
[ 12.864682] 3.12.0-rc2 #1 Not tainted
[ 12.864683]
[
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