Cc'ing linux-rt. Mabye someone has a flash of an idea. On Thursday 2009-06-04 23:42, Hector Centeno wrote to Jan Engelhardt: > >I hope it is OK to contact you directly to this email. I've been >trying to use your 2.6.29 RT kernel for OpenSuse 11.1 and came across >some problems related to the Intel graphics driver (I have a laptop >with intel GMA 950). The problem seems to be related to the new intel >driver development that is going on and that seems to affect older >hardware like mine. I get a constantly growing list of errors in >/var/log/mesages like these: > >kernel: BUG: using smp_processor_id() in preemptible [00000000] code: X/3257 >kernel: caller is kmap_atomic_prot_pfn+0x1a/0x94 >kernel: Pid: 3257, comm: X Tainted: G N 2.6.29.4-jen80-rt #1 >kernel: Call Trace: >kernel: [<b033c3f2>] ? printk+0xf/0x15 >kernel: [<b022712e>] debug_smp_processor_id+0xa6/0xbc >kernel: [<b011d617>] kmap_atomic_prot_pfn+0x1a/0x94 >kernel: [<f8a23c4c>] i915_gem_object_flush_cpu_write_domain+0x1c/0x27 [i915] >kernel: [<b011d6b7>] iomap_atomic_prot_pfn+0x26/0x2b >kernel: [<f8a270be>] i915_gem_gtt_pwrite+0x102/0x1b8 [i915] >kernel: [<f8a27290>] i915_gem_pwrite_ioctl+0x11c/0x1a8 [i915] >kernel: [<b0223e73>] ? copy_from_user+0x34/0x11b >kernel: [<f89d2776>] drm_ioctl+0x1b7/0x22f [drm] >kernel: [<f8a27174>] ? i915_gem_pwrite_ioctl+0x0/0x1a8 [i915] >kernel: [<b01ae63f>] vfs_ioctl+0x4e/0x67 >kernel: [<b01aec30>] do_vfs_ioctl+0x22a/0x242 >kernel: [<b01aec88>] sys_ioctl+0x40/0x5a >kernel: [<b01032fc>] sysenter_do_call+0x12/0x28 >kernel: BUG: using smp_processor_id() in preemptible [00000000] code: X/3257 >kernel: caller is iounmap_atomic+0x18/0x9b >kernel: Pid: 3257, comm: X Tainted: G N 2.6.29.4-jen80-rt #1 >kernel: Call Trace: >kernel: [<b033c3f2>] ? printk+0xf/0x15 >kernel: [<b022712e>] debug_smp_processor_id+0xa6/0xbc >kernel: [<b011d57a>] iounmap_atomic+0x18/0x9b >kernel: [<f8a270df>] i915_gem_gtt_pwrite+0x123/0x1b8 [i915] >kernel: [<f8a27290>] i915_gem_pwrite_ioctl+0x11c/0x1a8 [i915] >kernel: [<b0223e73>] ? copy_from_user+0x34/0x11b >kernel: [<f89d2776>] drm_ioctl+0x1b7/0x22f [drm] >kernel: [<f8a27174>] ? i915_gem_pwrite_ioctl+0x0/0x1a8 [i915] >kernel: [<b01ae63f>] vfs_ioctl+0x4e/0x67 >kernel: [<b01aec30>] do_vfs_ioctl+0x22a/0x242 >kernel: [<b01aec88>] sys_ioctl+0x40/0x5a >kernel: [<b01032fc>] sysenter_do_call+0x12/0x28 > >I'm assuming it is related to the Intel graphics driver because there >is mention to i915 but I might be wrong. If the Intel driver is >causing this I wonder if this has been fixed in upstream [...] -- To unsubscribe from this list: send the line "unsubscribe linux-rt-users" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
