Re: Lock order reversal errors during boot

2016-05-20 Thread Will Brokenbourgh 

On 05/16/16 00:44, Bjoern A. Zeeb wrote:

On 15 May 2016, at 07:44 , Kurt Jaeger <li...@opsec.eu> wrote:

Hi!


I am seeing 'lock order reversal' errors during boot on 11-CURRENT -
r298793.  A sample error:

lock order reversal:
  1st 0xf8011280d068 ufs (ufs) @ /usr/src/sys/kern/vfs_subr.c:2498
  2nd 0xfe01ca539400 bufwait (bufwait) @
/usr/src/sys/ufs/ffs/ffs_vnops.c:263
  3rd 0xf80112a23b78 ufs (ufs) @ /usr/src/sys/kern/vfs_subr.c:2498
stack backtrace:
#0 0x80a94bf0 at witness_debugger+0x70
#1 0x80a94ae4 at witness_checkorder+0xe54
#2 0x80a0fdd6 at __lockmgr_args+0x4d6
#3 0x80ce9626 at ffs_lock+0xa6
[...snip...]

I'm not sure if this is even something I should report, but better safe
than sorry, yes?

Yes, and there's even a page to compare your LOR against other ones:

http://sources.zabbadoz.net/freebsd/lor.html

Can you try if you find your LOR there ? If not, can you add it
to that page ?

No he can’t and I haven’t in years either.   Searching bugs might however be a 
good idea;  there is a LOR category or tag somewhere.

/bz

Thank you for the replies.

I'm getting these LORs pretty frequently.  Is this a normal occurrence 
for 11-CURRENT or is it only me having this problem?


Thanks

Will Brokenbourgh

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Lock order reversal errors during boot

2016-05-14 Thread Will Brokenbourgh 

Greetings,

My first post here so please be gentle.

I am seeing 'lock order reversal' errors during boot on 11-CURRENT - 
r298793.  A sample error:


lock order reversal:
 1st 0xf8011280d068 ufs (ufs) @ /usr/src/sys/kern/vfs_subr.c:2498
 2nd 0xfe01ca539400 bufwait (bufwait) @ 
/usr/src/sys/ufs/ffs/ffs_vnops.c:263

 3rd 0xf80112a23b78 ufs (ufs) @ /usr/src/sys/kern/vfs_subr.c:2498
stack backtrace:
#0 0x80a94bf0 at witness_debugger+0x70
#1 0x80a94ae4 at witness_checkorder+0xe54
#2 0x80a0fdd6 at __lockmgr_args+0x4d6
#3 0x80ce9626 at ffs_lock+0xa6
[...snip...]

I'm not sure if this is even something I should report, but better safe 
than sorry, yes?


I'm attaching the full dmesg for more information.

Sincerely,

Will Brokenbourgh

Copyright (c) 1992-2016 The FreeBSD Project.
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FreeBSD 11.0-CURRENT #0 r298793: Fri Apr 29 20:48:00 UTC 2016
r...@releng2.nyi.freebsd.org:/usr/obj/usr/src/sys/GENERIC amd64
FreeBSD clang version 3.8.0 (tags/RELEASE_380/final 262564) (based on LLVM 
3.8.0)
WARNING: WITNESS option enabled, expect reduced performance.
VT(vga): resolution 640x480
CPU: Intel(R) Core(TM) i5-4590 CPU @ 3.30GHz (3300.06-MHz K8-class CPU)
  Origin="GenuineIntel"  Id=0x306c3  Family=0x6  Model=0x3c  Stepping=3
  
Features=0xbfebfbff<FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,CLFLUSH,DTS,ACPI,MMX,FXSR,SSE,SSE2,SS,HTT,TM,PBE>
  
Features2=0x7ffafbff<SSE3,PCLMULQDQ,DTES64,MON,DS_CPL,VMX,SMX,EST,TM2,SSSE3,SDBG,FMA,CX16,xTPR,PDCM,PCID,SSE4.1,SSE4.2,x2APIC,MOVBE,POPCNT,TSCDLT,AESNI,XSAVE,OSXSAVE,AVX,F16C,RDRAND>
  AMD Features=0x2c100800<SYSCALL,NX,Page1GB,RDTSCP,LM>
  AMD Features2=0x21<LAHF,ABM>
  Structured Extended 
Features=0x27ab<FSGSBASE,TSCADJ,BMI1,AVX2,SMEP,BMI2,ERMS,INVPCID,NFPUSG>
  XSAVE Features=0x1
  VT-x: PAT,HLT,MTF,PAUSE,EPT,UG,VPID
  TSC: P-state invariant, performance statistics
real memory  = 8589934592 (8192 MB)
avail memory = 7625789440 (7272 MB)
Event timer "LAPIC" quality 600
ACPI APIC Table: 
FreeBSD/SMP: Multiprocessor System Detected: 4 CPUs
FreeBSD/SMP: 1 package(s) x 4 core(s)
random: unblocking device.
ioapic0  irqs 0-23 on motherboard
random: entropy device external interface
kbd1 at kbdmux0
netmap: loaded module
module_register_init: MOD_LOAD (vesa, 0x80f10fb0, 0) error 19
random: registering fast source Intel Secure Key RNG
random: fast provider: "Intel Secure Key RNG"
vtvga0:  on motherboard
cryptosoft0:  on motherboard
acpi0:  on motherboard
acpi0: Power Button (fixed)
cpu0:  on acpi0
cpu1:  on acpi0
cpu2:  on acpi0
cpu3:  on acpi0
hpet0:  iomem 0xfed0-0xfed003ff on acpi0
Timecounter "HPET" frequency 14318180 Hz quality 950
Event timer "HPET" frequency 14318180 Hz quality 550
Event timer "HPET1" frequency 14318180 Hz quality 440
Event timer "HPET2" frequency 14318180 Hz quality 440
Event timer "HPET3" frequency 14318180 Hz quality 440
Event timer "HPET4" frequency 14318180 Hz quality 440
atrtc0:  port 0x70-0x77 irq 8 on acpi0
Event timer "RTC" frequency 32768 Hz quality 0
attimer0:  port 0x40-0x43,0x50-0x53 irq 0 on acpi0
Timecounter "i8254" frequency 1193182 Hz quality 0
Event timer "i8254" frequency 1193182 Hz quality 100
Timecounter "ACPI-fast" frequency 3579545 Hz quality 900
acpi_timer0: <24-bit timer at 3.579545MHz> port 0x1808-0x180b on acpi0
pcib0:  port 0xcf8-0xcff on acpi0
pci0:  on pcib0
vgapci0:  port 0xf000-0xf03f mem 
0xf780-0xf7bf,0xe000-0xefff irq 16 at device 2.0 on pci0
vgapci0: Boot video device
hdac0:  mem 0xf7d04000-0xf7d07fff irq 16 at 
device 3.0 on pci0
pci0:  at device 22.0 (no driver attached)
ehci0:  mem 0xf7d0b000-0xf7d0b3ff 
irq 16 at device 26.0 on pci0
usbus0: EHCI version 1.0
usbus0 on ehci0
hdac1:  mem 0xf7d0-0xf7d03fff irq 22 at 
device 27.0 on pci0
pcib1:  irq 16 at device 28.0 on pci0
pci1:  on pcib1
pcib2:  irq 18 at device 28.2 on pci0
pci2:  on pcib2
re0:  port 
0xe000-0xe0ff mem 0xf7c0-0xf7c00fff,0xf000-0xf0003fff irq 18 at device 
0.0 on pci2
re0: Using 1 MSI-X message
re0: ASPM disabled
re0: Chip rev. 0x4c00
re0: MAC rev. 0x
miibus0:  on re0
rgephy0:  PHY 1 on miibus0
rgephy0:  none, 10baseT, 10baseT-FDX, 10baseT-FDX-flow, 100baseTX, 
100baseTX-FDX, 100baseTX-FDX-flow, 1000baseT-FDX, 1000baseT-FDX-master, 
1000baseT-FDX-flow, 1000baseT-FDX-flow-master, auto, auto-flow
re0: Using defaults for TSO: 65518/35/2048
re0: Ethernet address: 40:8d:5c:38:04:9d
re0: netmap queues/slots: TX 1/256, RX 1/256
pcib3:  irq 19 at device 28.3 on pci0
pci3:  on pcib3
pcib4:  irq 19 at device 0.0 on pci3
pci4:  on pcib4
ehci1:  mem 0xf7d0a000-0xf7d0a3ff