From owner-freebsd-current@freebsd.org Tue May 24 01:10:54 2016 Return-Path: Delivered-To: freebsd-current@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id 5897FB484EB for ; Tue, 24 May 2016 01:10:54 +0000 (UTC) (envelope-from imb@protected-networks.net) Received: from mail.auburn.protected-networks.net (mail.auburn.protected-networks.net [IPv6:2001:470:1f07:4e1::3]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client CN "mail.auburn.protected-networks.net", Issuer "Protected Networks Root CA" (not verified)) by mx1.freebsd.org (Postfix) with ESMTPS id 1813E1896 for ; Tue, 24 May 2016 01:10:53 +0000 (UTC) (envelope-from imb@protected-networks.net) Received: from toshi.auburn.protected-networks.net (toshi.auburn.protected-networks.net [192.168.1.10]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (Client did not present a certificate) (Authenticated sender: imb@mail.auburn.protected-networks.net) by mail.auburn.protected-networks.net (Postfix) with ESMTPSA id AC93C1CC5F for ; Mon, 23 May 2016 21:10:51 -0400 (EDT) Subject: Re: repeatable panic on pageout with 945GM To: freebsd-current@freebsd.org References: <2490f1c7-8153-ece3-49ed-4b3886564fd7@protected-networks.net> From: Michael Butler Openpgp: id=6F63E6399DCC8E3E94D60F0642FF6BAE0442D492 Message-ID: Date: Mon, 23 May 2016 21:10:50 -0400 User-Agent: Mozilla/5.0 (X11; FreeBSD amd64; rv:45.0) Gecko/20100101 Thunderbird/45.1.0 MIME-Version: 1.0 In-Reply-To: <2490f1c7-8153-ece3-49ed-4b3886564fd7@protected-networks.net> Content-Type: text/plain; charset=windows-1252 Content-Transfer-Encoding: 7bit X-BeenThere: freebsd-current@freebsd.org X-Mailman-Version: 2.1.22 Precedence: list List-Id: Discussions about the use of FreeBSD-current List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 24 May 2016 01:10:54 -0000 On 05/22/16 09:58, Michael Butler wrote: > With KDE and compositing enabled, I randomly get the following: > > (kgdb) info stack > #0 doadump (textdump=) at pcpu.h:221 > #1 0xffffffff8064e98e in kern_reboot (howto=260) at > /usr/src/sys/kern/kern_shutdown.c:366 > #2 0xffffffff8064eea1 in vpanic (fmt=, ap= optimized out>) at /usr/src/sys/kern/kern_shutdown.c:759 > #3 0xffffffff8064ed13 in panic (fmt=0x0) at > /usr/src/sys/kern/kern_shutdown.c:690 > #4 0xffffffff809d18ed in vm_fault_hold (map=, > vaddr=, fault_type=, > fault_flags=, m_hold=) at > /usr/src/sys/vm/vm_fault.c:327 > #5 0xffffffff809cf548 in vm_fault (map=0xfffff80002000000, vaddr= optimized out>, fault_type=1 '\001', fault_flags=) > at /usr/src/sys/vm/vm_fault.c:273 > #6 0xffffffff80a1849f in trap_pfault (frame=, > usermode=0) at /usr/src/sys/amd64/amd64/trap.c:741 > #7 0xffffffff80a17b30 in trap (frame=0xfffffe00dbec5830) at > /usr/src/sys/amd64/amd64/trap.c:442 > #8 0xffffffff809fd5a1 in calltrap () at > /usr/src/sys/amd64/amd64/exception.S:236 > #9 0xffffffff80a0a3bb in pmap_remove_all (m=) at > /usr/src/sys/amd64/amd64/pmap.c:3950 > #10 0xffffffff809c0c57 in cdev_pager_free_page (object= out>, m=0xfffffe0001e410d0) at /usr/src/sys/vm/device_pager.c:214 > #11 0xffffffff816aff33 in i915_gem_release_mmap (obj= out>) at > /usr/src/sys/modules/drm2/i915kms/../../../dev/drm2/i915/i915_gem.c:1691 > #12 0xffffffff816b104b in i915_gem_object_unbind > (obj=0xfffff8008ef11400) at > /usr/src/sys/modules/drm2/i915kms/../../../dev/drm2/i915/i915_gem.c:2738 > #13 0xffffffff816b47c8 in __i915_gem_shrink (dev_priv= out>, target=-1, purgeable_only=) > at > /usr/src/sys/modules/drm2/i915kms/../../../dev/drm2/i915/i915_gem.c:2056 > #14 0xffffffff816b3f47 in i915_gem_inactive_shrink (arg= out>) at > /usr/src/sys/modules/drm2/i915kms/../../../dev/drm2/i915/i915_gem.c:4755 > #15 0xffffffff809ec628 in vm_pageout () at /usr/src/sys/vm/vm_pageout.c:899 > #16 0xffffffff80609dcc in fork_exit (callout=0xffffffff809ec260 > , arg=0x0, frame=0xfffffe00dbec5c00) at > /usr/src/sys/kern/kern_fork.c:1034 > #17 0xffffffff809fdade in fork_trampoline () at > /usr/src/sys/amd64/amd64/exception.S:611 > #18 0x0000000000000000 in ?? () > > Any hints? Anyone? Another flavour .. almost like there's a mutex that should be held that isn't .. (kgdb) bt #0 0xffffffff8064e33f in panic (fmt=0x0) at /usr/src/sys/kern/kern_shutdown.c:686 #1 0xffffffff8064e03e in kern_reboot (howto=260) at /usr/src/sys/kern/kern_shutdown.c:369 #2 0xffffffff8064e551 in kproc_shutdown (arg=0x104, howto=) at /usr/src/sys/kern/kern_shutdown.c:811 #3 0xffffffff8064e3c3 in vpanic (fmt=0xfffffe0000209000
, ap=0xfffffe00dbf2f180) at /usr/src/sys/kern/kern_shutdown.c:712 #4 0xffffffff809d04ed in vm_fault_hold (map=0xfffff80002000000, vaddr=, fault_type=1 '\001', fault_flags=0, m_hold=0x0) at /usr/src/sys/vm/vm_fault.c:208 #5 0xffffffff809ce148 in mtrash_ctor (mem=, size=, arg=, flags=) at /usr/src/sys/vm/uma_dbg.c:143 #6 0xffffffff80a1709f in trap_fatal (frame=0x1, eva=18446735277650083840) at /usr/src/sys/amd64/amd64/trap.c:830 #7 0xffffffff80a16730 in trap (frame=0xfffffe00dbf2f570) at /usr/src/sys/amd64/amd64/trap.c:215 #8 0xffffffff809fc1a1 in Xxmm () at /usr/src/sys/amd64/amd64/exception.S:145 #9 0xffffffff80a08fbb in pmap_remove_all (m=) at atomic.h:186 #10 0xffffffff809bf937 in cdev_pager_allocate (handle=, tp=, ops=, size=, prot=, foff=, cred=) at /usr/src/sys/vm/device_pager.c:186 #11 0xffffffff816aff33 in i915_gem_release_mmap (obj=) at /usr/src/sys/modules/drm2/i915kms/../../../dev/drm2/i915/i915_gem.c:1691 #12 0xffffffff816b15ba in i915_gem_object_get_fence (obj=) at /usr/src/sys/modules/drm2/i915kms/../../../dev/drm2/i915/i915_gem.c:105 #13 0xffffffff816afb32 in i915_gem_pager_fault (vm_obj=0xfffff8002c501a50, offset=, prot=, mres=) at /usr/src/sys/modules/drm2/i915kms/../../../dev/drm2/i915/i915_gem.c:1553 #14 0xffffffff809bf384 in dev_pager_dealloc (object=0xfffff8002c501a50) at /usr/src/sys/vm/device_pager.c:242 #15 0xffffffff809edfbf in vm_pager_bufferinit () at /usr/src/sys/vm/vm_pager.c:201 #16 0xffffffff809ce9e9 in vm_fault_hold (map=0xfffff80093759000, vaddr=, fault_type=2 '\002', fault_flags=0, m_hold=0x0) at pcpu.h:221 #17 0xffffffff809ce148 in mtrash_ctor (mem=, size=, arg=, flags=) at /usr/src/sys/vm/uma_dbg.c:143 #18 0xffffffff80a1709f in trap_fatal (frame=0x2, eva=18446735280090484736) at /usr/src/sys/amd64/amd64/trap.c:830 #19 0xffffffff80a16860 in trap (frame=0xfffffe00dbf2fc00) at /usr/src/sys/amd64/amd64/trap.c:481 #20 0xffffffff809fc1a1 in Xxmm () at /usr/src/sys/amd64/amd64/exception.S:145 #21 0x00000008024f33b6 in ?? () Previous frame inner to this frame (corrupt stack?)