Hi Will Oh I see, Thanks for your reply Yes , we are testing for it , But need some time to wait for the result , Because The stability test need some time to reproduce this issue , And this issue doesn't reproduce 100% . -----Original Message----- From: Will Deacon [mailto:will.deacon@xxxxxxx] Sent: Monday, June 03, 2013 5:54 PM To: Wang, Yalin Cc: 'richard -rw- weinberger'; 'linux-arch@xxxxxxxxxxxxxxx'; 'linux-kernel@xxxxxxxxxxxxxxx'; 'linux-arm-kernel@xxxxxxxxxxxxxxxxxxx' Subject: Re: A bug about system call on ARM On Mon, Jun 03, 2013 at 06:25:26AM +0100, Wang, Yalin wrote: > Hi Will, > > I have a question about this patch . > > If the user space is thumb mode, > The PC should be rewind by 2 bytes, > So the fix_up code should be > > Sub lr, lr, #2 . > > > Am I right ? No, because we don't have OABI-compat support for Thumb applications and force everything down the EABI path instead. Did you manage to test the patch? Will -- To unsubscribe from this list: send the line "unsubscribe linux-arch" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html