linux-kernel - [BUG] i915: drm: xorg leaks drm objects massively: linux-2.6.30-rc{4,5}

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [day] [month] [year] [list]

Message-ID: <20090510225622.6229d154@mosly.slynet.org>
Date:	Sun, 10 May 2009 22:56:22 +0300
From:	Sergei Trofimovich <slyich@...il.com>
To:	LKML <linux-kernel@...r.kernel.org>,
	David Airlie <airlied@...ux.ie>
Subject: [BUG] i915: drm: xorg leaks drm objects massively:
 linux-2.6.30-rc{4,5}

I have HP Compaq 2510p laptop (amd64 gentoo) with installed:

xorg-1.5.3
x11-drivers/xf86-video-intel-{2.6.3, 2.7.0} (same problems on both drivers)
media-libs/mesa-7.4.1
x11-libs/libdrm-2.4.9
vanilla linux-2.6.30-rc{4,5}

After upgrade from 2.6.29.2 Xorg started to leak drm objects massively:
$ pmap `pidof X` | wc -l
3586

At the time of writing were leaked 2000 more memory areas.
Full pmap log is in attach. After 2 days of notebook's work xorg eats more than 1GB vram
and starts swap.

2.6.29.2 didn't have that problem.

I try newer drivers to get GLX working, without serious success (glxgears shows 60 FPS in full screen, ~130 windowed)

upgrading from -rc4 to -rc5 i noticed following msg (.config in attach):

[  538.930095] ------------[ cut here ]------------
[  538.930103] WARNING: at drivers/gpu/drm/i915/i915_gem.c:3823 warn_slowpath_null+0x12/0x14()
[  538.930109] Hardware name: HP Compaq 2510p Notebook PC
[  538.930114] Modules linked in: tun ext2 acpi_cpufreq iwlagn iwlcore yenta_socket rsrc_nonstatic sdhci_pci pcmcia_core mac80211 sg sr_mod cdrom ricoh_mmc sdhci e1000e mmc_core fan processor battery container ac thermal button
[  538.930168] Pid: 5064, comm: X Not tainted 2.6.30-rc5 #1
[  538.930173] Call Trace:
[  538.930184]  [<ffffffff80235aa3>] warn_slowpath_fmt+0xd4/0x108
[  538.930195]  [<ffffffff8022f0bc>] ? finish_task_switch+0x51/0xb4
[  538.930206]  [<ffffffff8057d6cf>] ? thread_return+0x75/0xaf
[  538.930217]  [<ffffffff8023ea68>] ? lock_timer_base+0x26/0x4a
[  538.930226]  [<ffffffff8023ec97>] ? try_to_del_timer_sync+0x58/0x63
[  538.930237]  [<ffffffff803daa85>] ? i915_gem_retire_requests+0x168/0x188
[  538.930246]  [<ffffffff8023ecb6>] ? del_timer_sync+0x14/0x21
[  538.930255]  [<ffffffff803daa85>] ? i915_gem_retire_requests+0x168/0x188
[  538.930279]  [<ffffffff80235ae9>] warn_slowpath_null+0x12/0x14
[  538.930287]  [<ffffffff803dc1af>] i915_gem_idle+0x1ac/0x2d8
[  538.930296]  [<ffffffff803dc333>] i915_gem_leavevt_ioctl+0x22/0x35
[  538.930306]  [<ffffffff803c5343>] drm_ioctl+0x21f/0x2c0
[  538.930315]  [<ffffffff803dc311>] ? i915_gem_leavevt_ioctl+0x0/0x35
[  538.930325]  [<ffffffff802af47a>] ? do_sync_write+0xe7/0x12d
[  538.930337]  [<ffffffff802bbe6d>] vfs_ioctl+0x5f/0x78
[  538.930347]  [<ffffffff802bc2b2>] do_vfs_ioctl+0x42c/0x468
[  538.930358]  [<ffffffff802bc330>] sys_ioctl+0x42/0x65
[  538.930367]  [<ffffffff802b0036>] ? sys_write+0x47/0x6e
[  538.930380]  [<ffffffff8020afeb>] system_call_fastpath+0x16/0x1b
[  538.930388] ---[ end trace 74ef8eda4e9b7b31 ]---

Where should I report such bugs?

-- 

  Sergei
View attachment "pmap.log" of type "text/x-log" (190584 bytes)

Download attachment ".config" of type "application/octet-stream" (60398 bytes)