Re: repeatable panic on pageout with 945GM

On 05/23/16 21:10, Michael Butler wrote:
> 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=<value optimized out>) 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=<value optimized out>, ap=<value
>> 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=<value optimized out>,
>> vaddr=<value optimized out>, fault_type=<value optimized out>,
>>     fault_flags=<value optimized out>, m_hold=<value optimized out>) at
>> /usr/src/sys/vm/vm_fault.c:327
>> #5  0xffffffff809cf548 in vm_fault (map=0xfffff80002000000, vaddr=<value
>> optimized out>, fault_type=1 '\001', fault_flags=<value optimized out>)
>>     at /usr/src/sys/vm/vm_fault.c:273
>> #6  0xffffffff80a1849f in trap_pfault (frame=<value optimized out>,
>> 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=<value optimized out>) at
>> /usr/src/sys/amd64/amd64/pmap.c:3950
>> #10 0xffffffff809c0c57 in cdev_pager_free_page (object=<value optimized
>> out>, m=0xfffffe0001e410d0) at /usr/src/sys/vm/device_pager.c:214
>> #11 0xffffffff816aff33 in i915_gem_release_mmap (obj=<value optimized

[ .. snip .. ]

Even with the most recent mesa update - something is upsetting this
device :-(

(kgdb) bt
#0  doadump (textdump=<value optimized out>) at pcpu.h:221
#1  0xffffffff805cfe9a in kern_reboot (howto=260) at
/usr/src/sys/kern/kern_shutdown.c:366
#2  0xffffffff805d03e1 in vpanic (fmt=<value optimized out>, ap=<value
optimized out>) at /usr/src/sys/kern/kern_shutdown.c:759
#3  0xffffffff805d0253 in panic (fmt=0x0) at
/usr/src/sys/kern/kern_shutdown.c:690
#4  0xffffffff8096c56e in vm_fault_hold (map=<value optimized out>,
vaddr=<value optimized out>, fault_type=<value optimized out>,
    fault_flags=<value optimized out>, m_hold=<value optimized out>) at
/usr/src/sys/vm/vm_fault.c:327
#5  0xffffffff80969f78 in vm_fault (map=0xfffff80002000000, vaddr=<value
optimized out>, fault_type=1 '\001', fault_flags=<value optimized out>)
    at /usr/src/sys/vm/vm_fault.c:273
#6  0xffffffff809b556f in trap_pfault (frame=<value optimized out>,
usermode=0) at /usr/src/sys/amd64/amd64/trap.c:741
#7  0xffffffff809b4c00 in trap (frame=0xfffffe00dc0ef310) at
/usr/src/sys/amd64/amd64/trap.c:442
#8  0xffffffff80999d81 in calltrap () at
/usr/src/sys/amd64/amd64/exception.S:236
#9  0xffffffff809a6d4e in pmap_remove_all (m=<value optimized out>) at
/usr/src/sys/amd64/amd64/pmap.c:3950
#10 0xffffffff8095ab7b in cdev_pager_free_page (object=<value optimized
out>, m=0xfffffe0001e2c270) at /usr/src/sys/vm/device_pager.c:214
#11 0xffffffff816aff33 in i915_gem_release_mmap (obj=<value optimized
out>) at
/usr/src/sys/modules/drm2/i915kms/../../../dev/drm2/i915/i915_gem.c:1691
#12 0xffffffff816b15ba in i915_gem_object_get_fence (obj=<value
optimized out>) at
/usr/src/sys/modules/drm2/i915kms/../../../dev/drm2/i915/i915_gem.c:105
#13 0xffffffff816b7f2e in i915_gem_execbuffer_reserve_object
(obj=0xfffff8009858f200, ring=<value optimized out>)
    at
/usr/src/sys/modules/drm2/i915kms/../../../dev/drm2/i915/i915_gem_execbuffer.c:368
#14 0xffffffff816b7d8f in i915_gem_execbuffer_reserve () at
/usr/src/sys/modules/drm2/i915kms/../../../dev/drm2/i915/i915_gem_execbuffer.c:491
#15 0xffffffff816b6bb5 in i915_gem_do_execbuffer () at
/usr/src/sys/modules/drm2/i915kms/../../../dev/drm2/i915/i915_gem_execbuffer.c:1036
#16 0xffffffff816b7ad1 in i915_gem_execbuffer2 (dev=0xfffff800059e9000,
data=0xfffffe00dc0efa20, file=0xfffff80005db4a00)
    at
/usr/src/sys/modules/drm2/i915kms/../../../dev/drm2/i915/i915_gem_execbuffer.c:1273
#17 0xffffffff812c7eae in drm_ioctl (kdev=<value optimized out>,
cmd=<value optimized out>, data=0xfffffe00dc0efa20 "", flags=<value
optimized out>,
    p=<value optimized out>) at
/usr/src/sys/modules/drm2/drm2/../../../dev/drm2/drm_drv.c:467
#18 0xffffffff804c721f in devfs_ioctl_f (fp=0xfffff800afba1550,
com=2151703657, data=0xfffffe00dc0efa20, cred=0xfffff800af2dc800,
td=0xfffff80005e2ca00)
    at /usr/src/sys/fs/devfs/devfs_vnops.c:815
#19 0xffffffff806377fe in kern_ioctl (td=<value optimized out>,
fd=<value optimized out>, com=<value optimized out>,
data=0xfffffe00dc0efa20 "") at file.h:327
#20 0xffffffff80637481 in sys_ioctl (td=0xfffff80005e2ca00,
uap=0xfffffe00dc0efb80) at /usr/src/sys/kern/sys_generic.c:743
#21 0xffffffff809b5e79 in amd64_syscall (td=<value optimized out>,
traced=0) at subr_syscall.c:135
#22 0xffffffff8099a06b in Xfast_syscall () at
/usr/src/sys/amd64/amd64/exception.S:396
#23 0x00000008024f57ca in ?? ()
Previous frame inner to this frame (corrupt stack?)
Current language:  auto; currently minimal

Any hints welcome,

	imb