On Thu, 7 Aug 2014 10:44:36 -0300 Gustavo Sverzut Barbieri <[email protected]> said:
> well, it's a bug in their part. I've isolated the problem to a simple > libdrm subcase of their vbltest.c, reported to: > https://www.virtualbox.org/ticket/13265 But I'm not sure how fast they > handle this. > > You don't need to detect virtualbox per se, only if vboxvideo is > loaded, then stat to /sys/module/vboxvideo is enough. > > One thing is that libdrm provides drmOpen() that takes a module name > (ie: nvidia, vboxvideo), while we open the /dev directly. So far it > seems to be okay, but I guess in future they may change this and add > some ioctl from inside such API to configure and in that case we'll > enter into problems. It would also be nice to know which device we're > using, suppose we have more than one video card, then we need to use > the current one, not the first one. i was using the code we had that liked to dri2 - for whatever reason dri2 is no longer usable so i skipped it and went right to the device i already knew. :) that's why i veto it if you have > 1 card. :) yeah might want to use drmopen later. right now it works though. and thanks for that - you have all the details with you. you might not want to veto just by version but veto entirely if vboxvideo is there... until we have a known version with a fix. :) (unless you know the bug only started at some specific version ie - the one you check for, and this is the last version the bug will be in?) > > On Wed, Aug 6, 2014 at 7:53 PM, Carsten Haitzler <[email protected]> wrote: > > On Wed, 6 Aug 2014 17:57:05 -0300 Gustavo Sverzut Barbieri > > <[email protected]> said: > > > >> update, this is caused by efl/src/lib/ecore_x/xlib/ecore_x_vsync.c > >> "#define ECORE_X_VSYNC_DRM 1". If you remove that line (or #undef the > >> sym), it works, now to find out the actual call that triggers it to > >> produce a test case for them... > > > > aaah shit. the code is really simple - it really does one of 4 things. > > open /dev/dri/card0, call a drm lib call to schedule a new vsync event, and > > then select to listen on the drm fd with a timeout and then use drm call to > > "read" the fd for the event info. one of those would do it. given that, i > > would imagine it's the schedule of a new vsync interrupt one. > > > > is there a nice simple way to know you have a vbox virtual driver in the > > kernel and are a guest? i can put in something to veto it (eg something > > in /proc or /sys - some file that exists only inside vbox if the guest > > driver is there - i can put in a simple stat for it and avoid if there)? > > > >> On Wed, Aug 6, 2014 at 12:38 PM, Gustavo Sverzut Barbieri > >> <[email protected]> wrote: > >> > sorry for the noise, this has nothing to do with Enlightenment or new > >> > vsync. I've disabled it and still happens, we're just triggering a bug > >> > in drm. > >> > > >> > if you suffer from this problem just remove virtualbox-guest-modules > >> > and you'll fallback to fbdev without problems (just setting X to use > >> > fbdev does not help, you need to remove vboxvideo.ko so it's never > >> > loaded). > >> > > >> > On Wed, Aug 6, 2014 at 11:42 AM, Gustavo Sverzut Barbieri > >> > <[email protected]> wrote: > >> >> Hi all, > >> >> > >> >> Just a heads up that recent Enlightenment (GIT) is causing problems > >> >> with ArchLinux vanilla kernel (3.15.8-1-ARCH), at least running inside > >> >> VirtualBox 4.3.14. > >> >> > >> >> I'm trying to isolate the problem to report that to kernel guys since > >> >> a Kernel Oops is always a kernel bug, until then watch out if you want > >> >> to update and run similar setup. > >> >> > >> >> The relevant dmesg part is: > >> >> > >> >> [ 7.142526] BUG: unable to handle kernel NULL pointer dereference at > >> >> (null) [ 7.142532] IP: [< (null)>] (null) > >> >> [ 7.142534] *pde = 00000000 > >> >> [ 7.142536] Oops: 0000 [#1] PREEMPT SMP > >> >> [ 7.142539] Modules linked in: ext4 crc16 mbcache jbd2 ppdev > >> >> snd_intel8x0 snd_ac97_codec intel_rapl microcode ac97_bus pcspkr > >> >> snd_pcm psmouse serio_raw snd_timer i2c_piix4 joydev mousedev snd > >> >> soundcore mac_hid e1000 parport_pc parport floppy(+) ac battery > >> >> intel_agp intel_gtt button evdev vboxvideo(O) drm agpgart i2c_core > >> >> vboxsf(O) vboxguest(O) hid_generic usbhid hid crc32c_generic btrfs xor > >> >> raid6_pq sd_mod crc_t10dif crct10dif_common atkbd libps2 ohci_pci > >> >> ohci_hcd ehci_pci ehci_hcd ahci libahci libata scsi_mod usbcore > >> >> usb_common i8042 serio > >> >> [ 7.142562] CPU: 0 PID: 254 Comm: enlightenment Tainted: G > >> >> O 3.15.8-1-ARCH #1 > >> >> [ 7.142564] Hardware name: innotek GmbH VirtualBox/VirtualBox, BIOS > >> >> VirtualBox 12/01/2006 > >> >> [ 7.142566] task: f39fd2c0 ti: f3a58000 task.ti: f3a58000 > >> >> [ 7.142568] EIP: 0060:[<00000000>] EFLAGS: 00210046 CPU: 0 > >> >> [ 7.142570] EIP is at 0x0 > >> >> [ 7.142572] EAX: f5228400 EBX: f5228400 ECX: f8b7d140 EDX: 00000000 > >> >> [ 7.142573] ESI: f9fdb560 EDI: 00000000 EBP: f3a59de4 ESP: f3a59d90 > >> >> [ 7.142574] DS: 007b ES: 007b FS: 00d8 GS: 00e0 SS: 0068 > >> >> [ 7.142576] CR0: 80050033 CR2: 00000000 CR3: 33a5c000 CR4: 000006d0 > >> >> [ 7.142581] Stack: > >> >> [ 7.142583] f9fda8c2 f53a1d90 f5228400 f5228438 f5121cc0 00000000 > >> >> f539f9c0 f3a59db4 > >> >> [ 7.142586] f9fdd1e0 00200046 f52284e8 f52284ea 00200246 00000000 > >> >> 00000000 f5b75024 > >> >> [ 7.142589] f539f9c0 c29a0d46 f5228400 f9fdb560 04000001 f3a59e44 > >> >> f9fdb5d8 f57cf948 > >> >> [ 7.142592] Call Trace: > >> >> [ 7.142601] [<f9fda8c2>] ? drm_vblank_get+0xd2/0x240 [drm] > >> >> [ 7.142607] [<f9fdd1e0>] ? drm_minor_release+0x10/0x20 [drm] > >> >> [ 7.142613] [<f9fdb560>] ? drm_modeset_ctl+0x70/0x70 [drm] > >> >> [ 7.142617] [<f9fdb5d8>] drm_wait_vblank+0x78/0x5e0 [drm] > >> >> [ 7.142622] [<c12320e0>] ? lockref_put_or_lock+0x20/0x40 > >> >> [ 7.142625] [<c11835f6>] ? mntput_no_expire+0x26/0x160 > >> >> [ 7.142629] [<f9fdb560>] ? drm_modeset_ctl+0x70/0x70 [drm] > >> >> [ 7.142633] [<f9fd7585>] drm_ioctl+0x1f5/0x560 [drm] > >> >> [ 7.142637] [<f9fdb560>] ? drm_modeset_ctl+0x70/0x70 [drm] > >> >> [ 7.142641] [<c1175d2d>] ? do_filp_open+0x3d/0xa0 > >> >> [ 7.142645] [<f9fd7390>] ? drm_copy_field+0x70/0x70 [drm] > >> >> [ 7.142648] [<c11782c2>] do_vfs_ioctl+0x302/0x4f0 > >> >> [ 7.142651] [<c11713bd>] ? final_putname+0x1d/0x40 > >> >> [ 7.142653] [<c11713bd>] ? final_putname+0x1d/0x40 > >> >> [ 7.142656] [<c10ad8f0>] ? ktime_get_ts+0x40/0x140 > >> >> [ 7.142658] [<c1181547>] ? __fget+0x57/0x90 > >> >> [ 7.142661] [<c1178530>] SyS_ioctl+0x80/0x90 > >> >> [ 7.142665] [<c14575e3>] sysenter_do_call+0x12/0x12 > >> >> [ 7.142666] Code: Bad EIP value. > >> >> [ 7.142669] EIP: [<00000000>] 0x0 SS:ESP 0068:f3a59d90 > >> >> [ 7.142672] CR2: 0000000000000000 > >> >> [ 7.142674] ---[ end trace 9c935fa0060b0fa8 ]--- > >> >> [ 7.142677] note: enlightenment[254] exited with preempt_count 2 > >> >> > >> >> If someone has the same problem running outside of VirtualBox let me > >> >> know, likely kernel guys will not look at it since it's "tainted", > >> >> however I don't think there is any relation to that. > >> >> > >> >> -- > >> >> Gustavo Sverzut Barbieri > >> >> -------------------------------------- > >> >> Mobile: +55 (19) 99225-2202 > >> >> Contact: http://www.gustavobarbieri.com.br/contact > >> > > >> > > >> > > >> > -- > >> > Gustavo Sverzut Barbieri > >> > -------------------------------------- > >> > Mobile: +55 (19) 99225-2202 > >> > Contact: http://www.gustavobarbieri.com.br/contact > >> > >> > >> > >> -- > >> Gustavo Sverzut Barbieri > >> -------------------------------------- > >> Mobile: +55 (19) 99225-2202 > >> Contact: http://www.gustavobarbieri.com.br/contact > >> > >> ------------------------------------------------------------------------------ > >> Infragistics Professional > >> Build stunning WinForms apps today! > >> Reboot your WinForms applications with our WinForms controls. > >> Build a bridge from your legacy apps to the future. > >> http://pubads.g.doubleclick.net/gampad/clk?id=153845071&iu=/4140/ostg.clktrk > >> _______________________________________________ > >> enlightenment-devel mailing list > >> [email protected] > >> https://lists.sourceforge.net/lists/listinfo/enlightenment-devel > >> > > > > > > -- > > ------------- Codito, ergo sum - "I code, therefore I am" -------------- > > The Rasterman (Carsten Haitzler) [email protected] > > > > > > -- > Gustavo Sverzut Barbieri > -------------------------------------- > Mobile: +55 (19) 99225-2202 > Contact: http://www.gustavobarbieri.com.br/contact > -- ------------- Codito, ergo sum - "I code, therefore I am" -------------- The Rasterman (Carsten Haitzler) [email protected] ------------------------------------------------------------------------------ Infragistics Professional Build stunning WinForms apps today! Reboot your WinForms applications with our WinForms controls. Build a bridge from your legacy apps to the future. http://pubads.g.doubleclick.net/gampad/clk?id=153845071&iu=/4140/ostg.clktrk _______________________________________________ enlightenment-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/enlightenment-users
