On Mon, 5 Nov 2007 06:29:26 +0000 (GMT) Dave Airlie <[email protected]> wrote:
> These patches are the first set of patches containing the core components
> of the DRI memory manger from Tungsten Graphics.
Something in your tree makes my i915-based Vaio oops when running glxgears:
[ 140.659360] BUG: unable to handle kernel NULL pointer dereference at virtual address 0000000c
[ 140.659379] printing eip: f8c511b6 *pde = 00000000
[ 140.659395] Oops: 0000 [#1] PREEMPT
[ 140.659411] last sysfs file: /sys/devices/system/cpu/cpu0/cpufreq/scaling_setspeed
[ 140.659419] Modules linked in: i915 drm ipw2200 sonypi ipv6 autofs4 hidp l2cap bluetooth sunrpc nf_conntrack_netbios_ns ipt_REJECT nf_conntrack_ipv4 xt_state nf_conntrack xt_tcpudp iptable_filter ip_tables x_tables acpi_cpufreq nvram ohci1394 ehci_hcd ieee1394 uhci_hcd joydev sg snd_hda_intel snd_seq_dummy snd_seq_oss snd_seq_midi_event snd_seq snd_seq_device sr_mod snd_pcm_oss cdrom snd_mixer_oss snd_pcm snd_timer i2c_i801 piix pcspkr generic snd ieee80211 soundcore ieee80211_crypt i2c_core snd_page_alloc button ext3 jbd ide_disk ide_core
[ 140.659677]
[ 140.659685] Pid: 3525, comm: glxgears Not tainted (2.6.24-rc2-mm1 #2)
[ 140.659693] EIP: 0060:[<f8c511b6>] EFLAGS: 00010046 CPU: 0
[ 140.659725] EIP is at drm_fence_flush_old+0x3d/0xf4 [drm]
[ 140.659731] EAX: 00000000 EBX: f6240468 ECX: 00000282 EDX: 00000000
[ 140.659738] ESI: 00000002 EDI: 00000002 EBP: e8c33ec8 ESP: e8c33ea8
[ 140.659745] DS: 007b ES: 007b FS: 0000 GS: 0033 SS: 0068
[ 140.659752] Process glxgears (pid: 3525, ti=E8C32000 task=F113E170 task.ti=E8C32000)
[ 140.659758] Stack: f6240000 f624044c 00000000 f13919a0 f62690b8 f737b200 08be829c 000176b8
[ 140.659803] e8c33f1c f8dbdc76 00000013 f1391cc0 f6240000 f737b200 f8c6d898 00000001
[ 140.659850] 00000001 f737b200 f8e40000 0001ffff 00000013 f737b200 08be8250 00000000
[ 140.659896] Call Trace:
[ 140.659906] [<c0104cec>] show_trace_log_lvl+0x12/0x25
[ 140.659921] [<c0104d8b>] show_stack_log_lvl+0x8c/0x9e
[ 140.659932] [<c0104e27>] show_registers+0x8a/0x1c0
[ 140.659944] [<c010504b>] die+0xee/0x1c4
[ 140.659954] [<c0116a2c>] do_page_fault+0x405/0x4e1
[ 140.659966] [<c031fa22>] error_code+0x6a/0x70
[ 140.659979] [<f8dbdc76>] i915_cmdbuffer+0x3a4/0x3e8 [i915]
[ 140.659997] [<f8c4a73c>] drm_ioctl+0x1ac/0x228 [drm]
[ 140.660028] [<c0179bca>] vfs_ioctl+0x4e/0x67
[ 140.660041] [<c0179e45>] do_vfs_ioctl+0x262/0x279
[ 140.660053] [<c0179e9c>] sys_ioctl+0x40/0x5c
[ 140.660064] [<c0103da2>] syscall_call+0x7/0xb
[ 140.660165] =======================
[ 140.660170] INFO: lockdep is turned off.
Pulled yesterday, head is
GIT 1d9e76b53ce8ff0b15b43b679801226add747d4e git+ssh://master.kernel.org/pub/scm/linux/kernel/git/airlied/drm-2.6.git#drm-mm
commit
Author: Dave Airlie <[email protected]>
Date: Mon Nov 5 16:59:20 2007 +1000
drm/ttm: fix build with AGP disabled
This:
--- a/drivers/char/drm/drm_fence.c~a
+++ a/drivers/char/drm/drm_fence.c
@@ -305,6 +305,9 @@ void drm_fence_flush_old(struct drm_devi
struct drm_fence_object *fence;
uint32_t diff;
+ if (!driver)
+ return;
+
write_lock_irqsave(&fm->lock, flags);
old_sequence = (sequence - driver->flush_diff) & driver->sequence_mask;
diff = (old_sequence - fc->last_exe_flush) & driver->sequence_mask;
_
stops the oops and gets glxgears working OK, so I'll be able to include
git-drm.patch in rc2-mm1, hopefully in a couple of hours from now.
Hopefully this bug won't affect other drivers..
-
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