Re: [revert request for commit 9fff2fa] Re: [git pull] signals pile 3

2012-10-15 Thread Catalin Marinas
On Mon, Oct 15, 2012 at 05:27:32PM +0100, Al Viro wrote: > On Mon, Oct 15, 2012 at 05:07:10PM +0100, Catalin Marinas wrote: > > On Sun, Oct 14, 2012 at 08:56:11PM +0100, Al Viro wrote: > > > On Sun, Oct 14, 2012 at 08:24:03PM +0100, Al Viro wrote: > > > > > > > Russell, could you recall what those

Re: [revert request for commit 9fff2fa] Re: [git pull] signals pile 3

2012-10-15 Thread Al Viro
On Mon, Oct 15, 2012 at 05:07:10PM +0100, Catalin Marinas wrote: > On Sun, Oct 14, 2012 at 08:56:11PM +0100, Al Viro wrote: > > On Sun, Oct 14, 2012 at 08:24:03PM +0100, Al Viro wrote: > > > > > Russell, could you recall what those had been about? I'm not sure if that > > > had been oopsable that

Re: [revert request for commit 9fff2fa] Re: [git pull] signals pile 3

2012-10-15 Thread Catalin Marinas
On Sun, Oct 14, 2012 at 08:56:11PM +0100, Al Viro wrote: > On Sun, Oct 14, 2012 at 08:24:03PM +0100, Al Viro wrote: > > > Russell, could you recall what those had been about? I'm not sure if that > > had been oopsable that far back (again, oops scenario is userland stack > > page getting swapped

Re: [revert request for commit 9fff2fa] Re: [git pull] signals pile 3

2012-10-14 Thread Al Viro
On Sun, Oct 14, 2012 at 08:24:03PM +0100, Al Viro wrote: > Russell, could you recall what those had been about? I'm not sure if that > had been oopsable that far back (again, oops scenario is userland stack > page getting swapped out before we get to start_thread(), leading to > direct read from

Re: [revert request for commit 9fff2fa] Re: [git pull] signals pile 3

2012-10-14 Thread Al Viro
On Sun, Oct 14, 2012 at 06:26:40PM +0100, Al Viro wrote: > and the last 3 make no sense whatsoever. Note that on normal execve() we'll > be going through the syscall return, so the userland will see 0 in there, > no matter what do we do here. Theoretically, it might've been done for > ptrace sake

Re: [revert request for commit 9fff2fa] Re: [git pull] signals pile 3

2012-10-14 Thread Al Viro
On Sun, Oct 14, 2012 at 08:21:53PM +0200, Daniel Mack wrote: > On 14.10.2012 19:55, Al Viro wrote: > > On Sun, Oct 14, 2012 at 06:26:40PM +0100, Al Viro wrote: > >> On Sun, Oct 14, 2012 at 06:44:12PM +0200, Daniel Mack wrote: > >>> On Oct 14, 2012 6:40 PM, "Al Viro" wrote: > > On Sun, Oc

Re: [revert request for commit 9fff2fa] Re: [git pull] signals pile 3

2012-10-14 Thread Daniel Mack
On 14.10.2012 19:55, Al Viro wrote: > On Sun, Oct 14, 2012 at 06:26:40PM +0100, Al Viro wrote: >> On Sun, Oct 14, 2012 at 06:44:12PM +0200, Daniel Mack wrote: >>> On Oct 14, 2012 6:40 PM, "Al Viro" wrote: On Sun, Oct 14, 2012 at 05:35:23PM +0200, Daniel Mack wrote: > I rebased m

Re: [revert request for commit 9fff2fa] Re: [git pull] signals pile 3

2012-10-14 Thread Al Viro
On Sun, Oct 14, 2012 at 06:26:40PM +0100, Al Viro wrote: > On Sun, Oct 14, 2012 at 06:44:12PM +0200, Daniel Mack wrote: > > On Oct 14, 2012 6:40 PM, "Al Viro" wrote: > > > > > > On Sun, Oct 14, 2012 at 05:35:23PM +0200, Daniel Mack wrote: > > > > > > > I rebased my ARM development branch and figur

Re: [revert request for commit 9fff2fa] Re: [git pull] signals pile 3

2012-10-14 Thread Al Viro
On Sun, Oct 14, 2012 at 06:44:12PM +0200, Daniel Mack wrote: > On Oct 14, 2012 6:40 PM, "Al Viro" wrote: > > > > On Sun, Oct 14, 2012 at 05:35:23PM +0200, Daniel Mack wrote: > > > > > I rebased my ARM development branch and figured that your patch 9fff2fa > > > ("arm: switch to saner kernel_execve

[revert request for commit 9fff2fa] Re: [git pull] signals pile 3

2012-10-14 Thread Al Viro
On Sun, Oct 14, 2012 at 05:35:23PM +0200, Daniel Mack wrote: > I rebased my ARM development branch and figured that your patch 9fff2fa > ("arm: switch to saner kernel_execve() semantics") breaks the boot on my > board right after init is invoked via NFS: OK, revert it is, then. Nothing in the tr