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Just installed a snapshot; getting some lock order reversals:
lock order reversal:
1st 0xffffff021a4bf8a0 vmmaplk (&map->lock) @ /usr/src/sys/uvm/uvm_fault.c:1441
2nd 0xffff800000112138 drmdevlk (&dev->struct_mutex) @
/usr/src/sys/dev/pci/drm/i915/i915_gem.c:1801
lock order "&dev->struct_mutex"(rwlock) -> "&map->lock"(rwlock) first seen at:
#0 witness_checkorder+0x4c0
#1 _rw_enter+0x68
#2 vm_map_lock_ln+0xbc
#3 uvm_map+0x1a1
#4 uvm_km_valloc+0x6c
#5 vmap+0x36
#6 vmap_batch+0xeb
#7 i915_parse_cmds+0x15d
#8 i915_gem_execbuffer2+0x1032
#9 drm_do_ioctl+0x221
#10 drmioctl+0xf9
#11 VOP_IOCTL+0x5a
#12 vn_ioctl+0x6b
#13 sys_ioctl+0x477
#14 syscall+0x32a
#15 Xsyscall_untramp+0xe4
lock order "&map->lock"(rwlock) -> "&dev->struct_mutex"(rwlock) first seen at:
#0 witness_checkorder+0x4c0
#1 _rw_enter_write+0x53
#2 i915_gem_object_wait_rendering__nonblocking+0x1fa
#3 i915_gem_fault+0x144
#4 drm_fault+0x18a
#5 uvm_fault+0x743
#6 pageflttrap+0x14c
#7 trap+0x2b2
#8 recall_trap+0x8
lock order reversal:
1st 0xffffffff81db3b48 &sched_lock (&sched_lock) @
/usr/src/sys/kern/kern_synch.c:444
2nd 0xffff8000001089f0 &dev_priv->uncore.lock (&dev_priv->uncore.lock) @
/usr/src/sys/dev/pci/drm/i915/intel_uncore.c:811
lock order "&dev_priv->uncore.lock"(mutex) -> "&sched_lock"(sched_lock) first
seen at:
#0 witness_checkorder+0x4c0
#1 ___mp_lock+0x70
#2 schedclock+0x30
#3 hardclock+0xe3
#4 lapic_clockintr+0x3d
#5 Xresume_lapic_ltimer+0x22
#6 x86_bus_space_mem_read_4
#7 ironlake_irq_handler+0x95
#8 intr_handler+0x74
#9 Xintr_ioapic_edge16_untramp+0x166
#10 acpicpu_idle+0x1ea
#11 sched_idle+0x275
lock order "&sched_lock"(sched_lock) -> "&dev_priv->uncore.lock"(mutex) first
seen at:
#0 witness_checkorder+0x4c0
#1 _mtx_enter+0x31
#2 gen6_read32+0x8f
#3 gen6_ring_get_seqno+0x3a
#4 __i915_wait_request+0x232
#5 i915_gem_object_wait_rendering__nonblocking+0x1d6
#6 i915_gem_set_domain_ioctl+0xdb
#7 drm_do_ioctl+0x221
#8 drmioctl+0xf9
#9 VOP_IOCTL+0x5a
#10 vn_ioctl+0x6b
#11 sys_ioctl+0x477
#12 syscall+0x32a
#13 Xsyscall_untramp+0xe4
lock order reversal:
1st 0xffffffff81db3b48 &sched_lock (&sched_lock) @
/usr/src/sys/kern/kern_synch.c:444
2nd 0xffff80000010f270 &dev_priv->irq_lock (&dev_priv->irq_lock) @
/usr/src/sys/dev/pci/drm/i915/intel_ringbuffer.c:1787
lock order "&dev_priv->irq_lock"(mutex) -> "&sched_lock"(sched_lock) first seen
at:
#0 witness_checkorder+0x4c0
#1 ___mp_lock+0x70
#2 wakeup_n+0x39
#3 task_add+0x93
#4 gen6_rps_boost+0x129
#5 __i915_wait_request+0x155
#6 i915_gem_object_wait_rendering__nonblocking+0x1d6
#7 i915_gem_set_domain_ioctl+0xdb
#8 drm_do_ioctl+0x221
#9 drmioctl+0xf9
#10 VOP_IOCTL+0x5a
#11 vn_ioctl+0x6b
#12 sys_ioctl+0x477
#13 syscall+0x32a
#14 Xsyscall_untramp+0xe4
lock order "&sched_lock"(sched_lock) -> "&dev_priv->irq_lock"(mutex) first seen
at:
#0 witness_checkorder+0x4c0
#1 _mtx_enter+0x31
#2 gen6_ring_put_irq+0x36
#3 __i915_wait_request+0x367
#4 i915_gem_object_wait_rendering__nonblocking+0x1d6
#5 i915_gem_set_domain_ioctl+0xdb
#6 drm_do_ioctl+0x221
#7 drmioctl+0xf9
#8 VOP_IOCTL+0x5a
#9 vn_ioctl+0x6b
#10 sys_ioctl+0x477
#11 syscall+0x32a
#12 Xsyscall_untramp+0xe4
Full dmesg:
OpenBSD 6.3-current (GENERIC.MP) #44: Thu Jun 21 16:41:24 MDT 2018
dera...@amd64.openbsd.org:/usr/src/sys/arch/amd64/compile/GENERIC.MP
real mem = 8255762432 (7873MB)
avail mem = 7929257984 (7561MB)
mpath0 at root
scsibus0 at mpath0: 256 targets
mainbus0 at root
bios0 at mainbus0: SMBIOS rev. 2.7 @ 0xdae9d000 (71 entries)
bios0: vendor LENOVO version "G6ET93WW (2.53 )" date 02/04/2013
bios0: LENOVO 3444CUU
acpi0 at bios0: rev 2
acpi0: sleep states S0 S3 S4 S5
acpi0: tables DSDT FACP SLIC TCPA SSDT SSDT SSDT HPET APIC MCFG ECDT FPDT ASF!
UEFI UEFI MSDM SSDT SSDT UEFI SSDT DBG2
acpi0: wakeup devices LID_(S4) SLPB(S3) IGBE(S4) EXP2(S4) XHCI(S3) EHC1(S3)
EHC2(S3) HDEF(S4)
acpitimer0 at acpi0: 3579545 Hz, 24 bits
acpihpet0 at acpi0: 14318179 Hz
acpimadt0 at acpi0 addr 0xfee00000: PC-AT compat
cpu0 at mainbus0: apid 0 (boot processor)
cpu0: Intel(R) Core(TM) i7-3667U CPU @ 2.00GHz, 1896.08 MHz
cpu0:
FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,CFLUSH,DS,ACPI,MMX,FXSR,SSE,SSE2,SS,HTT,TM,PBE,SSE3,PCLMUL,DTES64,MWAIT,DS-CPL,VMX,SMX,EST,TM2,SSSE3,CX16,xTPR,PDCM,PCID,SSE4.1,SSE4.2,x2APIC,POPCNT,DEADLINE,AES,XSAVE,AVX,F16C,RDRAND,NXE,RDTSCP,LONG,LAHF,PERF,ITSC,FSGSBASE,SMEP,ERMS,IBRS,IBPB,STIBP,SENSOR,ARAT,XSAVEOPT,MELTDOWN
cpu0: 256KB 64b/line 8-way L2 cache
cpu0: smt 0, core 0, package 0
mtrr: Pentium Pro MTRR support, 10 var ranges, 88 fixed ranges
cpu0: apic clock running at 99MHz
cpu0: mwait min=64, max=64, C-substates=0.2.1.1.2, IBE
cpu1 at mainbus0: apid 1 (application processor)
cpu1: Intel(R) Core(TM) i7-3667U CPU @ 2.00GHz, 1895.69 MHz
cpu1:
FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,CFLUSH,DS,ACPI,MMX,FXSR,SSE,SSE2,SS,HTT,TM,PBE,SSE3,PCLMUL,DTES64,MWAIT,DS-CPL,VMX,SMX,EST,TM2,SSSE3,CX16,xTPR,PDCM,PCID,SSE4.1,SSE4.2,x2APIC,POPCNT,DEADLINE,AES,XSAVE,AVX,F16C,RDRAND,NXE,RDTSCP,LONG,LAHF,PERF,ITSC,FSGSBASE,SMEP,ERMS,IBRS,IBPB,STIBP,SENSOR,ARAT,XSAVEOPT,MELTDOWN
cpu1: 256KB 64b/line 8-way L2 cache
cpu1: smt 1, core 0, package 0
cpu2 at mainbus0: apid 2 (application processor)
cpu2: Intel(R) Core(TM) i7-3667U CPU @ 2.00GHz, 1895.70 MHz
cpu2:
FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,CFLUSH,DS,ACPI,MMX,FXSR,SSE,SSE2,SS,HTT,TM,PBE,SSE3,PCLMUL,DTES64,MWAIT,DS-CPL,VMX,SMX,EST,TM2,SSSE3,CX16,xTPR,PDCM,PCID,SSE4.1,SSE4.2,x2APIC,POPCNT,DEADLINE,AES,XSAVE,AVX,F16C,RDRAND,NXE,RDTSCP,LONG,LAHF,PERF,ITSC,FSGSBASE,SMEP,ERMS,IBRS,IBPB,STIBP,SENSOR,ARAT,XSAVEOPT,MELTDOWN
cpu2: 256KB 64b/line 8-way L2 cache
cpu2: smt 0, core 1, package 0
cpu3 at mainbus0: apid 3 (application processor)
cpu3: Intel(R) Core(TM) i7-3667U CPU @ 2.00GHz, 1895.69 MHz
cpu3:
FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,CFLUSH,DS,ACPI,MMX,FXSR,SSE,SSE2,SS,HTT,TM,PBE,SSE3,PCLMUL,DTES64,MWAIT,DS-CPL,VMX,SMX,EST,TM2,SSSE3,CX16,xTPR,PDCM,PCID,SSE4.1,SSE4.2,x2APIC,POPCNT,DEADLINE,AES,XSAVE,AVX,F16C,RDRAND,NXE,RDTSCP,LONG,LAHF,PERF,ITSC,FSGSBASE,SMEP,ERMS,IBRS,IBPB,STIBP,SENSOR,ARAT,XSAVEOPT,MELTDOWN
cpu3: 256KB 64b/line 8-way L2 cache
cpu3: smt 1, core 1, package 0
ioapic0 at mainbus0: apid 2 pa 0xfec00000, version 20, 24 pins
acpimcfg0 at acpi0 addr 0xf8000000, bus 0-63
acpiec0 at acpi0
acpiprt0 at acpi0: bus 0 (PCI0)
acpiprt1 at acpi0: bus -1 (PEG_)
acpiprt2 at acpi0: bus 2 (EXP1)
acpiprt3 at acpi0: bus 3 (EXP2)
acpicpu0 at acpi0: C2(350@80 mwait.1@0x20), C1(1000@1 mwait.1), PSS
acpicpu1 at acpi0: C2(350@80 mwait.1@0x20), C1(1000@1 mwait.1), PSS
acpicpu2 at acpi0: C2(350@80 mwait.1@0x20), C1(1000@1 mwait.1), PSS
acpicpu3 at acpi0: C2(350@80 mwait.1@0x20), C1(1000@1 mwait.1), PSS
acpipwrres0 at acpi0: PUBS, resource for XHCI, EHC1, EHC2
acpitz0 at acpi0: critical temperature is 200 degC
acpibtn0 at acpi0: LID_
acpibtn1 at acpi0: SLPB
"MSFT9000" at acpi0 not configured
"MSFT9001" at acpi0 not configured
acpicmos0 at acpi0
"LEN0071" at acpi0 not configured
"LEN0030" at acpi0 not configured
"SMO1200" at acpi0 not configured
acpibat0 at acpi0: BAT0 model "45N1071" serial 1475 type LiP oem "SMP"
acpiac0 at acpi0: AC unit online
"LEN0078" at acpi0 not configured
acpithinkpad0 at acpi0
"PNP0C14" at acpi0 not configured
"PNP0C14" at acpi0 not configured
"INT33A0" at acpi0 not configured
acpivideo0 at acpi0: VID_
acpivout at acpivideo0 not configured
acpivideo1 at acpi0: VID_
cpu0: Enhanced SpeedStep 1896 MHz: speeds: 2001, 2000, 1900, 1800, 1700, 1600,
1500, 1400, 1300, 1200, 1100, 1000, 900, 800 MHz
pci0 at mainbus0 bus 0
pchb0 at pci0 dev 0 function 0 "Intel Core 3G Host" rev 0x09
inteldrm0 at pci0 dev 2 function 0 "Intel HD Graphics 4000" rev 0x09
drm0 at inteldrm0
inteldrm0: msi
inteldrm0: 1600x900, 32bpp
wsdisplay0 at inteldrm0 mux 1: console (std, vt100 emulation)
wsdisplay0: screen 1-5 added (std, vt100 emulation)
"Intel 7 Series MEI" rev 0x04 at pci0 dev 22 function 0 not configured
puc0 at pci0 dev 22 function 3 "Intel 7 Series KT" rev 0x04: ports: 16 com
com4 at puc0 port 0 apic 2 int 19: ns16550a, 16 byte fifo
com4: probed fifo depth: 0 bytes
ehci0 at pci0 dev 26 function 0 "Intel 7 Series USB" rev 0x04: apic 2 int 16
usb0 at ehci0: USB revision 2.0
uhub0 at usb0 configuration 1 interface 0 "Intel EHCI root hub" rev 2.00/1.00
addr 1
azalia0 at pci0 dev 27 function 0 "Intel 7 Series HD Audio" rev 0x04: msi
azalia0: codecs: Realtek ALC269, Intel/0x2806, using Realtek ALC269
audio0 at azalia0
ppb0 at pci0 dev 28 function 0 "Intel 7 Series PCIE" rev 0xc4: msi
pci1 at ppb0 bus 2
sdhc0 at pci1 dev 0 function 0 "Ricoh 5U822 SD/MMC" rev 0x07: apic 2 int 16
sdhc0: SDHC 3.0, 50 MHz base clock
sdmmc0 at sdhc0: 4-bit, sd high-speed, mmc high-speed, dma
ppb1 at pci0 dev 28 function 1 "Intel 7 Series PCIE" rev 0xc4: msi
pci2 at ppb1 bus 3
iwn0 at pci2 dev 0 function 0 "Intel Centrino Advanced-N 6205" rev 0x96: msi,
MIMO 2T2R, MoW, address 84:3a:4b:0a:ae:80
ehci1 at pci0 dev 29 function 0 "Intel 7 Series USB" rev 0x04: apic 2 int 23
usb1 at ehci1: USB revision 2.0
uhub1 at usb1 configuration 1 interface 0 "Intel EHCI root hub" rev 2.00/1.00
addr 1
pcib0 at pci0 dev 31 function 0 "Intel QS77 LPC" rev 0x04
ahci0 at pci0 dev 31 function 2 "Intel 7 Series AHCI" rev 0x04: msi, AHCI 1.3
ahci0: port 0: 6.0Gb/s
scsibus1 at ahci0: 32 targets
sd0 at scsibus1 targ 0 lun 0: <ATA, INTEL SSDSCMMW24, LE9i> SCSI3 0/direct
fixed naa.5001517803db5380
sd0: 228936MB, 512 bytes/sector, 468862128 sectors, thin
ichiic0 at pci0 dev 31 function 3 "Intel 7 Series SMBus" rev 0x04: apic 2 int 18
iic0 at ichiic0
isa0 at pcib0
isadma0 at isa0
pckbc0 at isa0 port 0x60/5 irq 1 irq 12
pckbd0 at pckbc0 (kbd slot)
wskbd0 at pckbd0: console keyboard, using wsdisplay0
pms0 at pckbc0 (aux slot)
wsmouse0 at pms0 mux 0
pcppi0 at isa0 port 0x61
spkr0 at pcppi0
error: [drm:pid0:cpt_set_fifo_underrun_reporting] *ERROR* uncleared pch fifo
underrun on pch transcoder A
error: [drm:pid0:intel_pch_fifo_underrun_irq_handler] *ERROR* PCH transcoder A
FIFO underrun
uhub2 at uhub0 port 1 configuration 1 interface 0 "Intel Rate Matching Hub" rev
2.00/0.00 addr 2
ugen0 at uhub2 port 3 "Auth Biometric Coprocessor" rev 1.10/0.01 addr 3
ugen1 at uhub2 port 4 "Broadcom Corp BCM20702A0" rev 2.00/1.12 addr 4
uvideo0 at uhub2 port 6 configuration 1 interface 0 "SunplusIT INC. Integrated
Camera" rev 2.00/36.22 addr 5
video0 at uvideo0
uhub3 at uhub1 port 1 configuration 1 interface 0 "Intel Rate Matching Hub" rev
2.00/0.00 addr 2
uhidev0 at uhub3 port 3 configuration 1 interface 0 "eGalax Inc. eGalaxTouch
EXC7903-66v03_T1" rev 2.00/66.03 addr 3
uhidev0: iclass 3/1, 7 report ids
ums0 at uhidev0 reportid 1: 2 buttons
wsmouse1 at ums0 mux 0
uhid0 at uhidev0 reportid 3: input=63, output=63, feature=0
uhid1 at uhidev0 reportid 5: input=0, output=0, feature=2
ums1 at uhidev0 reportid 6: 1 button, tip
wsmouse2 at ums1 mux 0
ums2 at uhidev0 reportid 7
ums2: mouse has no X report
vscsi0 at root
scsibus2 at vscsi0: 256 targets
softraid0 at root
scsibus3 at softraid0: 256 targets
sd1 at scsibus3 targ 1 lun 0: <OPENBSD, SR CRYPTO, 006> SCSI2 0/direct fixed
sd1: 227906MB, 512 bytes/sector, 466751982 sectors
root on sd1a (a1a57dffe6790454.a) swap on sd1b dump on sd1b
lock order reversal:
1st 0xffffff021a4bf8a0 vmmaplk (&map->lock) @ /usr/src/sys/uvm/uvm_fault.c:1441
2nd 0xffff800000112138 drmdevlk (&dev->struct_mutex) @
/usr/src/sys/dev/pci/drm/i915/i915_gem.c:1801
lock order "&dev->struct_mutex"(rwlock) -> "&map->lock"(rwlock) first seen at:
#0 witness_checkorder+0x4c0
#1 _rw_enter+0x68
#2 vm_map_lock_ln+0xbc
#3 uvm_map+0x1a1
#4 uvm_km_valloc+0x6c
#5 vmap+0x36
#6 vmap_batch+0xeb
#7 i915_parse_cmds+0x15d
#8 i915_gem_execbuffer2+0x1032
#9 drm_do_ioctl+0x221
#10 drmioctl+0xf9
#11 VOP_IOCTL+0x5a
#12 vn_ioctl+0x6b
#13 sys_ioctl+0x477
#14 syscall+0x32a
#15 Xsyscall_untramp+0xe4
lock order "&map->lock"(rwlock) -> "&dev->struct_mutex"(rwlock) first seen at:
#0 witness_checkorder+0x4c0
#1 _rw_enter_write+0x53
#2 i915_gem_object_wait_rendering__nonblocking+0x1fa
#3 i915_gem_fault+0x144
#4 drm_fault+0x18a
#5 uvm_fault+0x743
#6 pageflttrap+0x14c
#7 trap+0x2b2
#8 recall_trap+0x8
lock order reversal:
1st 0xffffffff81db3b48 &sched_lock (&sched_lock) @
/usr/src/sys/kern/kern_synch.c:444
2nd 0xffff8000001089f0 &dev_priv->uncore.lock (&dev_priv->uncore.lock) @
/usr/src/sys/dev/pci/drm/i915/intel_uncore.c:811
lock order "&dev_priv->uncore.lock"(mutex) -> "&sched_lock"(sched_lock) first
seen at:
#0 witness_checkorder+0x4c0
#1 ___mp_lock+0x70
#2 schedclock+0x30
#3 hardclock+0xe3
#4 lapic_clockintr+0x3d
#5 Xresume_lapic_ltimer+0x22
#6 x86_bus_space_mem_read_4
#7 ironlake_irq_handler+0x95
#8 intr_handler+0x74
#9 Xintr_ioapic_edge16_untramp+0x166
#10 acpicpu_idle+0x1ea
#11 sched_idle+0x275
lock order "&sched_lock"(sched_lock) -> "&dev_priv->uncore.lock"(mutex) first
seen at:
#0 witness_checkorder+0x4c0
#1 _mtx_enter+0x31
#2 gen6_read32+0x8f
#3 gen6_ring_get_seqno+0x3a
#4 __i915_wait_request+0x232
#5 i915_gem_object_wait_rendering__nonblocking+0x1d6
#6 i915_gem_set_domain_ioctl+0xdb
#7 drm_do_ioctl+0x221
#8 drmioctl+0xf9
#9 VOP_IOCTL+0x5a
#10 vn_ioctl+0x6b
#11 sys_ioctl+0x477
#12 syscall+0x32a
#13 Xsyscall_untramp+0xe4
lock order reversal:
1st 0xffffffff81db3b48 &sched_lock (&sched_lock) @
/usr/src/sys/kern/kern_synch.c:444
2nd 0xffff80000010f270 &dev_priv->irq_lock (&dev_priv->irq_lock) @
/usr/src/sys/dev/pci/drm/i915/intel_ringbuffer.c:1787
lock order "&dev_priv->irq_lock"(mutex) -> "&sched_lock"(sched_lock) first seen
at:
#0 witness_checkorder+0x4c0
#1 ___mp_lock+0x70
#2 wakeup_n+0x39
#3 task_add+0x93
#4 gen6_rps_boost+0x129
#5 __i915_wait_request+0x155
#6 i915_gem_object_wait_rendering__nonblocking+0x1d6
#7 i915_gem_set_domain_ioctl+0xdb
#8 drm_do_ioctl+0x221
#9 drmioctl+0xf9
#10 VOP_IOCTL+0x5a
#11 vn_ioctl+0x6b
#12 sys_ioctl+0x477
#13 syscall+0x32a
#14 Xsyscall_untramp+0xe4
lock order "&sched_lock"(sched_lock) -> "&dev_priv->irq_lock"(mutex) first seen
at:
#0 witness_checkorder+0x4c0
#1 _mtx_enter+0x31
#2 gen6_ring_put_irq+0x36
#3 __i915_wait_request+0x367
#4 i915_gem_object_wait_rendering__nonblocking+0x1d6
#5 i915_gem_set_domain_ioctl+0xdb
#6 drm_do_ioctl+0x221
#7 drmioctl+0xf9
#8 VOP_IOCTL+0x5a
#9 vn_ioctl+0x6b
#10 sys_ioctl+0x477
#11 syscall+0x32a
#12 Xsyscall_untramp+0xe4
error: [drm:pid32844:intel_pipe_update_start] *ERROR* Potential atomic update
failure on pipe A
