[Bug 78424] [HSW Regression]WARNING: SPLL already enabled

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=78424

--- Comment #9 from Jens <jens-bugs.freedesktop.org at spamfreemail.de> ---
I have checked out the current drm-intel-next-queued branch as of 2 hours ago,
built it and tested hibernate with this kernel. I get a whole bunch of new
WARNINGs, like

WARNING: CPU: 0 PID: 6 at drivers/gpu/drm/i915/i915_irq.c:154
ironlake_disable_display_irq+0x75/0x80 [i915]()
WARNING: CPU: 0 PID: 6 at drivers/gpu/drm/i915/i915_irq.c:423
ibx_display_interrupt_update+0x90/0xa0 [i915]()
WARNING: CPU: 3 PID: 6 at drivers/gpu/drm/i915/i915_irq.c:423
ibx_display_interrupt_update+0x90/0xa0 [i915]()
WARNING: CPU: 1 PID: 171 at drivers/gpu/drm/i915/intel_ddi.c:911
intel_ddi_pll_enable+0x248/0x250 [i915]()
WARNING: CPU: 0 PID: 6 at drivers/gpu/drm/i915/i915_irq.c:154
ironlake_disable_display_irq+0x75/0x80 [i915]()
WARNING: CPU: 0 PID: 6 at drivers/gpu/drm/i915/i915_irq.c:423
ibx_display_interrupt_update+0x90/0xa0 [i915]()
WARNING: CPU: 3 PID: 6 at drivers/gpu/drm/i915/i915_irq.c:423
ibx_display_interrupt_update+0x90/0xa0 [i915]()
WARNING: CPU: 1 PID: 171 at drivers/gpu/drm/i915/intel_ddi.c:911
intel_ddi_pll_enable+0x248/0x250 [i915]()
WARNING: CPU: 0 PID: 7177 at drivers/gpu/drm/i915/i915_irq.c:154
ironlake_disable_display_irq+0x75/0x80 [i915]()
WARNING: CPU: 0 PID: 7177 at drivers/gpu/drm/i915/i915_irq.c:423
ibx_display_interrupt_update+0x90/0xa0 [i915]()
WARNING: CPU: 0 PID: 7177 at drivers/gpu/drm/i915/i915_irq.c:423
ibx_display_interrupt_update+0x90/0xa0 [i915]()
WARNING: CPU: 1 PID: 7178 at drivers/gpu/drm/i915/intel_ddi.c:911
intel_ddi_pll_enable+0x248/0x250 [i915]()

but I do not get the spontaneous reboots any more. Instead, after a couple of
suspend/resume cycles (3 in my case) I get tons of these:

[  665.971162] BUG: Bad page map in process lxpanel  pte:dd000000dc0000
pmd:35d6b067
[  665.971163] addr:00007f7fe682e000 vm_flags:08000070 anon_vma:         
(null) mapping:ffff880211963220 index:1de
[  665.971164] vma->vm_ops->fault: filemap_fault+0x0/0x430
[  665.971165] vma->vm_file->f_op->mmap: ext4_file_mmap+0x0/0x60
[  665.971166] CPU: 3 PID: 3270 Comm: lxpanel Tainted: G    B   W  OE
3.16.0-rc2+ #4
[  665.971166] Hardware name: MSI MS-7817/CSM-B85M-E45 (MS-7817), BIOS V10.5
05/30/2014
[  665.971167]  ffff8800352b1000 ffff88003631bad8 ffffffff81739d4e
00007f7fe682e000
[  665.971168]  ffff88003631bb20 ffffffff8118704a 00dd000000dc0000
00000000000001de
[  665.971169]  ffff880035d6b170 00dd000000dc0000 00007f7fe6955000
00007f7fe682e000
[  665.971171] Call Trace:
[  665.971173]  [<ffffffff81739d4e>] dump_stack+0x45/0x56
[  665.971174]  [<ffffffff8118704a>] print_bad_pte+0x1aa/0x250
[  665.971175]  [<ffffffff811883de>] unmap_single_vma+0x5de/0x8d0
[  665.971176]  [<ffffffff81189699>] unmap_vmas+0x49/0x90
[  665.971177]  [<ffffffff811920fc>] exit_mmap+0x9c/0x170
[  665.971179]  [<ffffffff8111b893>] ? __delayacct_add_tsk+0x153/0x170
[  665.971180]  [<ffffffff8106992c>] mmput+0x5c/0x120
[  665.971182]  [<ffffffff8106ecdc>] do_exit+0x26c/0xa60
[  665.971183]  [<ffffffff8173d62e>] ? schedule_timeout_killable+0x1e/0x20
[  665.971185]  [<ffffffff81161a8c>] ? out_of_memory+0x49c/0x4d0
[  665.971186]  [<ffffffff8106f54f>] do_group_exit+0x3f/0xa0
[  665.971187]  [<ffffffff8107ee40>] get_signal_to_deliver+0x1d0/0x6f0
[  665.971189]  [<ffffffff81012548>] do_signal+0x48/0x9d0
[  665.971190]  [<ffffffff8101c1d5>] ? native_sched_clock+0x35/0x90
[  665.971192]  [<ffffffff8101c239>] ? sched_clock+0x9/0x10
[  665.971194]  [<ffffffff8111ce9c>] ? acct_account_cputime+0x1c/0x20
[  665.971195]  [<ffffffff810a335b>] ? account_user_time+0x8b/0xa0
[  665.971197]  [<ffffffff810a3924>] ? vtime_account_user+0x54/0x60
[  665.971198]  [<ffffffff81012f39>] do_notify_resume+0x69/0xb0
[  665.971199]  [<ffffffff817432d8>] retint_signal+0x48/0x90
[  665.971200] swap_free: Bad swap offset entry 37c000003780

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