https://bugzilla.kernel.org/show_bug.cgi?id=17702
--- Comment #4 from Duncan <1i5t5.dun...@cox.net> 2010-09-05 09:11:20 --- Created an attachment (id=29022) --> (https://bugzilla.kernel.org/attachment.cgi?id=29022) dmesg.bad OK, here's the results of the bisect 44437579efca258e3c4a09f59838c8f933611990 is the first bad commit commit 44437579efca258e3c4a09f59838c8f933611990 Author: Alex Deucher <alexdeuc...@gmail.com> Date: Mon Jul 26 18:51:53 2010 -0400 drm/radeon/kms/r7xx: add workaround for hw issue with HDP flush commit 812d046915f48236657f02c06d7dc47140e9ceda upstream. Use of HDP_*_COHERENCY_FLUSH_CNTL can cause a hang in certain situations. Add workaround. Signed-off-by: Alex Deucher <alexdeuc...@gmail.com> Signed-off-by: Dave Airlie <airl...@redhat.com> Signed-off-by: Greg Kroah-Hartman <gre...@suse.de> :040000 040000 08710601d4da663008c68e8f4985a7efc21dac64 c306035b3979c94c24addce318f977a83ee0a2d5 M drivers As to why it's doing it... looks like that accel off thing was a red herring -- I had tried noaccel in xorg.conf.d, but that apparently affects 2D only, and since it's DRM/OpenGL only, it didn't cure the issue here. But as I said above, disable dri in the module section did. Meanwhile, dmesg says it's a kernel NULL pointer dereference... "process X" Here's the full bug dump, and I'm attaching the full (bad) dmesg output. (The tg3 line happens at boot, earlier; the SysRq line happens as I hit it to restore raw, after which I hit the three-finger-salute, triggering the dmesg dump as part of the reboot.) tg3 0000:02:09.0: eth0: Flow control is on for TX and on for RX BUG: unable to handle kernel NULL pointer dereference at (null) IP: [<ffffffff8124b8ff>] 0xffffffff8124b8ff PGD 1c653b067 PUD 1c2c33067 PMD 0. Oops: 0000 [#1] SMP. last sysfs file: /sys/devices/pci0000:04/0000:04:01.0/0000:05:00.0/boot_vga CPU 3. Pid: 2057, comm: X Not tainted 2.6.35-36-gc189900+ #35 S2885 Thunder K8W Mainboard/To Be Filled By O.E.M. RIP: 0010:[<ffffffff8124b8ff>] [<ffffffff8124b8ff>] 0xffffffff8124b8ff RSP: 0018:ffff8801c6753d70 EFLAGS: 00010246 RAX: ffffc90001bc0000 RBX: ffff8801c7a89e00 RCX: 0000000000000000 RDX: 0000000000000000 RSI: ffff8801c7a89e00 RDI: ffff8801c7ac2000 RBP: ffff8801c6778300 R08: 0000000000000000 R09: 00000000c0086464 R10: 0000000000000001 R11: 0000000000003246 R12: ffff8801c7a89e48 R13: 0000000000000000 R14: ffff8801c6753dd8 R15: ffffffff81512c20 FS: 00007fe03103c860(0000) GS:ffff880149f00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000000000 CR3: 00000001c6694000 CR4: 00000000000006e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400 Process X (pid: 2057, threadinfo ffff8801c6752000, task ffff8801c5d53840) Stack: ffffffff81226651 ffff8801c6778300 ffff8801c5793780 ffff880146e58000 <0> 00000000fffffff2 00000000c0086464 ffffffff811da935 ffff880100000064 <0> 000000000000e200 ffff880100000001 ffffffff81071413 ffffffff8122656c Call Trace: [<ffffffff81226651>] ? 0xffffffff81226651 [<ffffffff811da935>] ? 0xffffffff811da935 [<ffffffff81071413>] ? 0xffffffff81071413 [<ffffffff8122656c>] ? 0xffffffff8122656c [<ffffffff8106c1e8>] ? 0xffffffff8106c1e8 [<ffffffff81074665>] ? 0xffffffff81074665 [<ffffffff81094a03>] ? 0xffffffff81094a03 [<ffffffff810952d6>] ? 0xffffffff810952d6 [<ffffffff81095346>] ? 0xffffffff81095346 [<ffffffff81001e2b>] ? 0xffffffff81001e2b Code: 97 50 03 00 00 48 8b 87 c8 00 00 00 76 0a 31 c9 89 88 34 2f 00 00 eb 13 b9 34 2f 00 00 89 08 31 c0 48 8b 8f c8 RIP [<ffffffff8124b8ff>] 0xffffffff8124b8ff RSP <ffff8801c6753d70> CR2: 0000000000000000 ---[ end trace f66d01ec94df04c1 ]--- [drm:drm_release] *ERROR* Device busy: 1 SysRq : Keyboard mode set to system default -- Configure bugmail: https://bugzilla.kernel.org/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are watching the assignee of the bug. ------------------------------------------------------------------------------ This SF.net Dev2Dev email is sponsored by: Show off your parallel programming skills. Enter the Intel(R) Threading Challenge 2010. http://p.sf.net/sfu/intel-thread-sfd -- _______________________________________________ Dri-devel mailing list Dri-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/dri-devel
