4.1-rc3: i915-related crash

4.1-rc3: i915-related crash

[Pavel Machek]

Hi!

Debian 8 based system. X suddenly froze. Not quite reproducible, I'm afraid.

								Pavel

[331445.592203] ftdi_sio 5-2:1.0: device disconnected
[331447.063345] r8169 0000:03:00.0 eth0: link up
[331447.930260] PM: resume of devices complete after 2860.478 msecs
[331447.930312] ftdi_sio 5-2:1.0: FTDI USB Serial Device converter detected
[331447.930481] usb 5-2: Detected FT232RL
[331447.933092] usb 5-2: FTDI USB Serial Device converter now attached to ttyUSB0
[331447.933809] PM: resume devices took 2.864 seconds
[331447.933870] PM: Finishing wakeup.
[331447.933871] Restarting tasks ... 
[331447.933975] i915 0000:00:02.0: BAR 6: [??? 0x00000000 flags 0x2] has bogus alignment
[331447.933981] pci 0000:00:1f.0: BAR 7: [io  size 0x0080] has bogus alignment
[331447.933986] pci 0000:00:1e.0: PCI bridge to [bus 04]
[331447.942242] i915 0000:00:02.0: BAR 6: [??? 0x00000000 flags 0x2] has bogus alignment
[331447.942252] pci 0000:00:1f.0: BAR 7: [io  size 0x0080] has bogus alignment
[331447.942257] pci 0000:00:1e.0: PCI bridge to [bus 04]
[331447.942414] i915 0000:00:02.0: BAR 6: [??? 0x00000000 flags 0x2] has bogus alignment
[331447.942417] pci 0000:00:1f.0: BAR 7: [io  size 0x0080] has bogus alignment
[331447.942419] pci 0000:00:1e.0: PCI bridge to [bus 04]
[331447.942566] i915 0000:00:02.0: BAR 6: [??? 0x00000000 flags 0x2] has bogus alignment
[331447.942568] pci 0000:00:1f.0: BAR 7: [io  size 0x0080] has bogus alignment
[331447.942571] pci 0000:00:1e.0: PCI bridge to [bus 04]
[331447.942714] i915 0000:00:02.0: BAR 6: [??? 0x00000000 flags 0x2] has bogus alignment
[331447.942717] pci 0000:00:1f.0: BAR 7: [io  size 0x0080] has bogus alignment
[331447.942719] pci 0000:00:1e.0: PCI bridge to [bus 04]
[331447.943194] done.
[339876.723061] general protection fault: 0000 [#1] SMP DEBUG_PAGEALLOC 
[339876.723095] Modules linked in:
[339876.723106] CPU: 0 PID: 2672 Comm: Xorg Tainted: G        W       4.1.0-rc3 #22
[339876.723130] Hardware name:                  /DG41MJ, BIOS MJG4110H.86A.0006.2009.1223.1155 12/23/2009
[339876.723159] task: ffff8800a8cee050 ti: ffff8800a8cf0000 task.ti: ffff8800a8cf0000
[339876.723183] RIP: 0010:[<ffffffff843f2d50>]  [<ffffffff843f2d50>] intel_gtt_insert_sg_entries+0x30/0xa0
[339876.723220] RSP: 0000:ffff8800a8cf3958  EFLAGS: 00213206
[339876.723235] RAX: 000000005a5a5a5a RBX: ffff88012bf36f00 RCX: 0000000000004d1f
[339876.723257] RDX: 0000000000010000 RSI: 0000000000004d1f RDI: ffff88008dd7a500
[339876.723278] RBP: ffff8800a8cf3998 R08: 0000000000000000 R09: 0000000004f6d000
[339876.723300] R10: 0000000000000000 R11: 0000000000000000 R12: 5a5a5a5a5a5a0100
[339876.723322] R13: 0000000000004d1f R14: 0000000000010000 R15: 0000000000000000
[339876.723345] FS:  0000000000000000(0000) GS:ffff88013f200000(0063) knlGS:00000000f714d880
[339876.723370] CS:  0010 DS: 002b ES: 002b CR0: 000000008005003b
[339876.723387] CR2: 00000000f72b4d64 CR3: 000000013200f000 CR4: 00000000000406b0
[339876.723409] Stack:
[339876.723413]  ffff88008dd7a500 0000000000000000 ffff8800a8cf3988 ffff88012bf36f00
[339876.723444]  0000000000000000 0000000000000000 ffff8801378290a8 0000000000000000
[339876.723475]  ffff8800a8cf39b8 ffffffff8444aaa4 ffff8800a8cf3a48 ffff88012bf36f00
[339876.723507] Call Trace:
[339876.723517]  [<ffffffff8444aaa4>] i915_ggtt_bind_vma+0x44/0x70
[339876.723534]  [<ffffffff8444c4a6>] i915_vma_bind+0x46/0x460
[339876.723551]  [<ffffffff84327335>] ? swiotlb_map_sg_attrs+0x75/0x160
[339876.723571]  [<ffffffff8444bbf2>] ? i915_gem_gtt_prepare_object+0x82/0xc0
[339876.723593]  [<ffffffff8445354e>] i915_gem_object_do_pin+0x85e/0x9d0
[339876.723612]  [<ffffffff8444cde0>] ? i915_gem_request_free+0x40/0x60
[339876.723633]  [<ffffffff844536f5>] i915_gem_object_pin+0x35/0x40
[339876.723652]  [<ffffffff844454b1>] i915_gem_execbuffer_reserve_vma.isra.19+0x71/0x140
[339876.723676]  [<ffffffff8444585c>] i915_gem_execbuffer_reserve+0x2dc/0x310
[339876.724701]  [<ffffffff84445f95>] i915_gem_do_execbuffer.isra.25+0x705/0x11b0
[339876.725709]  [<ffffffff841142d7>] ? cache_alloc_debugcheck_after.isra.63+0x67/0x2f0
[339876.726019]  [<ffffffff84447c71>] ? i915_gem_execbuffer2+0x91/0x2b0
[339876.726019]  [<ffffffff84447d21>] i915_gem_execbuffer2+0x141/0x2b0
[339876.726019]  [<ffffffff84408370>] drm_ioctl+0x1a0/0x690
[339876.726019]  [<ffffffff84437b55>] i915_compat_ioctl+0x45/0x50
[339876.726019]  [<ffffffff84166c20>] compat_SyS_ioctl+0xa0/0x1190
[339876.726019]  [<ffffffff840a90f6>] ? ktime_get_ts64+0x86/0x150
[339876.726019]  [<ffffffff840a556c>] ? posix_ktime_get_ts+0xc/0x10
[339876.726019]  [<ffffffff840a556c>] ? posix_ktime_get_ts+0xc/0x10
[339876.726019]  [<ffffffff84310203>] ? lockdep_sys_exit_thunk+0x12/0x14
[339876.726019]  [<ffffffff84990255>] ia32_do_call+0x13/0x13
[339876.736025] Code: 57 41 56 41 89 d6 41 55 41 89 f5 41 54 53 48 83 ec 18 8b 47 08 48 89 7d c0 4c 8b 27 c7 45 cc 00 00 00 00 85 c0 74 58 0f 1f 40 00 <41> 8b 5c 24 18 c1 eb 0c 85 db 74 2d 45 31 ff 90 48 8b 0d d9 7f 
[339876.736025] RIP  [<ffffffff843f2d50>] intel_gtt_insert_sg_entries+0x30/0xa0
[339876.736025]  RSP <ffff8800a8cf3958>
[339876.743455] ---[ end trace e8b388331768406b ]---
[339914.594279] Watchdog[5681]: segfault at 0 ip 000000005a738293 sp 00000000f4aeebb0 error 6 in chromium[56565000+61f2000]

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