Re: [Latest Git kernel/Linux-next kernel] Xorg doesn't start after the seccomp updates v5.9-rc1
Hi Kees, Thanks a lot for your patch! I think your patch works because I can patch the Git source code but the kernel doesn’t boot. In my point of view your modifications aren’t responsible for this second issue. The kernel can’t initialize the graphics card anymore. I think the latest DRM updates are responsible for the second issue. Because of this second issue I can’t test your patch. Please test the latest Git kernel. Thanks, Christian > On 7. Aug 2020, at 19:45, Kees Cook wrote: > > On Fri, Aug 07, 2020 at 04:45:14PM +0200, Christian Zigotzky wrote: >> But Xorg works on Ubuntu 10.04.4 (PowerPC 32-bit), openSUSE Tumbleweed >> 20190722 PPC64 and on Fedora 27 PPC64 with the latest Git kernel. >> >> I bisected today [4]. >> >> Result: net/scm: Regularize compat handling of scm_detach_fds() >> (c0029de50982c1fb215330a5f9d433cec0cfd8cc) [5] is the first bad commit. >> >> This commit has been merged with the seccomp updates v5.9-rc1 on 2020-08-04 >> 14:11:08 -0700 [1]. Since these updates, Xorg doesn't start anymore on some >> Linux distributions. > > Hi! Thanks for bisecting; yes, sorry for the trouble (I'm still trying > to understand why my compat tests _passed_...). Regardless, can you try > this patch: > > https://lore.kernel.org/lkml/20200807173609.GJ4402@mussarela/ > > -- > Kees Cook
Re: [Latest Git kernel/Linux-next kernel] Xorg doesn't start after the seccomp updates v5.9-rc1
On Fri, Aug 07, 2020 at 04:45:14PM +0200, Christian Zigotzky wrote: > But Xorg works on Ubuntu 10.04.4 (PowerPC 32-bit), openSUSE Tumbleweed > 20190722 PPC64 and on Fedora 27 PPC64 with the latest Git kernel. > > I bisected today [4]. > > Result: net/scm: Regularize compat handling of scm_detach_fds() > (c0029de50982c1fb215330a5f9d433cec0cfd8cc) [5] is the first bad commit. > > This commit has been merged with the seccomp updates v5.9-rc1 on 2020-08-04 > 14:11:08 -0700 [1]. Since these updates, Xorg doesn't start anymore on some > Linux distributions. Hi! Thanks for bisecting; yes, sorry for the trouble (I'm still trying to understand why my compat tests _passed_...). Regardless, can you try this patch: https://lore.kernel.org/lkml/20200807173609.GJ4402@mussarela/ -- Kees Cook
[Latest Git kernel/Linux-next kernel] Xorg doesn't start after the seccomp updates v5.9-rc1
Hello, Xorg doesn't start with the latest Git kernel anymore on some Linux distributions after the seccomp updates v5.9-rc1 [1]. For example on Fienix (Debian Sid PowerPC 32-bit) and on ubuntu MATE 16.04.6 (PowerPC 32-bit). I tested these distributions on the A-EON AmigaOne X1000 [2], A-EON AmigaOne X5000 [3], and in a virtual e5500 QEMU machine with a virtio_gpu. Error messages: systemd-journald[2238]: Failed to send WATCHDOG-1 notification message: Connection refused systemd-journald[2238]: Failed to send WATCHDOG-1 notification message: Transport endpoint is not connected systemd-journald[2238]: Failed to send WATCHDOG-1 notification message: Transport endpoint is not connected systemd-journald[2238]: Failed to send WATCHDOG-1 notification message: Transport endpoint is not connected systemd-journald[2238]: Failed to send WATCHDOG-1 notification message: Transport endpoint is not connected systemd-journald[2238]: Failed to send WATCHDOG-1 notification message: Transport endpoint is not connected --- But Xorg works on Ubuntu 10.04.4 (PowerPC 32-bit), openSUSE Tumbleweed 20190722 PPC64 and on Fedora 27 PPC64 with the latest Git kernel. I bisected today [4]. Result: net/scm: Regularize compat handling of scm_detach_fds() (c0029de50982c1fb215330a5f9d433cec0cfd8cc) [5] is the first bad commit. This commit has been merged with the seccomp updates v5.9-rc1 on 2020-08-04 14:11:08 -0700 [1]. Since these updates, Xorg doesn't start anymore on some Linux distributions. Unfortunately I wasn't able to revert the first bad commit. The first bad commit depends on many other commits, which unfortunately I don't know. I tried to remove the modifications of the files from the first bad commit but without any success. There are just too many dependencies. Additionally I compiled a linux-next kernel because of the issue with the lastest Git kernel. Unfortunately this kernel doesn't boot. It can't initialize the graphics card. Could you please test Xorg with the latest Git kernel on some Linux distributions? Thanks, Christian [1] https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=9ecc6ea491f0c0531ad81ef9466284df260b2227 [2] https://en.wikipedia.org/wiki/AmigaOne_X1000 [3] http://wiki.amiga.org/index.php?title=X5000 [4] https://forum.hyperion-entertainment.com/viewtopic.php?p=51317#p51317 [5] https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=c0029de50982c1fb215330a5f9d433cec0cfd8cc
