Debug linux binary with enable linux emulation

Fri May 15 17:41:46 UTC 2020

Dne 2020-05-15 18:45, Konstantin Belousov napsal:
> On Fri, May 15, 2020 at 06:22:54PM +0200, freebsd at sysctl.cz wrote:
>> i have now 12.1 p5 generic kernel and cannot replicate this kernel 
>> panic.
>> M.F.
> And what was the version where it occurred ?
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Version was FreeBSD 12.1-RELEASE-p3 GENERIC

Architecture: amd64
Architecture Version: 2
Dump Length: 1202487296
Blocksize: 512
Compression: none
Dumptime: Sun May 10 19:44:37 2020
Hostname:
Magic: FreeBSD Kernel Dump
Version String: FreeBSD 12.1-RELEASE-p3 GENERIC
Panic String: page fault
Dump Parity: 3631849229
Bounds: 2

May 10 19:43:33  kernel: pid 19891 (Discord), jid 0, uid 1001: exited on 
signal 5 (core dumped)
May 10 19:43:35  kernel: pid 23929 (Discord), jid 0, uid 1001: exited on 
signal 5 (core dumped)
May 10 19:45:17  syslogd: kernel boot file is /boot/kernel/kernel
May 10 19:45:17  kernel:
May 10 19:45:17  syslogd: last message repeated 1 times
May 10 19:45:17  kernel: Fatal trap 12: page fault while in kernel mode
May 10 19:45:17  kernel: cpuid = 3; apic id = 03
May 10 19:45:17  kernel: fault virtual address  = 0x18
May 10 19:45:17  kernel: fault code             = supervisor read data, 
page not present
May 10 19:45:17  kernel: instruction pointer    = 
0x20:0xffffffff82f5b682
May 10 19:45:17  kernel: stack pointer          = 
0x28:0xfffffe00691fd980
May 10 19:45:17  kernel: frame pointer          = 
0x28:0xfffffe00691fd9e0
May 10 19:45:17  kernel: code segment           = base 0x0, limit 
0xfffff, type 0x1b
May 10 19:45:17  kernel:                        = DPL 0, pres 1, long 1, 
def32 0, gran 1
May 10 19:45:17  kernel: processor eflags       = interrupt enabled, 
resume, IOPL = 0
May 10 19:45:17  kernel: current process                = 17392 (fish)
May 10 19:45:17  kernel: trap number            = 12
May 10 19:45:17  kernel: panic: page fault
May 10 19:45:17  kernel: cpuid = 3
May 10 19:45:17  kernel: time = 1589132677
May 10 19:45:17  kernel: KDB: stack backtrace:
May 10 19:45:17  kernel: #0 0xffffffff80c1d2f7 at kdb_backtrace+0x67
May 10 19:45:17  kernel: #1 0xffffffff80bd062d at vpanic+0x19d
May 10 19:45:17  kernel: #2 0xffffffff80bd0483 at panic+0x43
May 10 19:45:17  kernel: #3 0xffffffff810a7dcc at trap_fatal+0x39c
May 10 19:45:17  kernel: #4 0xffffffff810a7e19 at trap_pfault+0x49
May 10 19:45:17  kernel: #5 0xffffffff810a740f at trap+0x29f
May 10 19:45:17  kernel: #6 0xffffffff81081bdc at calltrap+0x8
May 10 19:45:17  kernel: #7 0xffffffff82f503d1 at 
linux_thread_detach+0x21
May 10 19:45:17  kernel: #8 0xffffffff80be5acf at 
thread_suspend_check+0x41f
May 10 19:45:17  kernel: #9 0xffffffff80c32ed9 at ast+0x3b9
May 10 19:45:17  kernel: #10 0xffffffff810850e9 at doreti_ast+0x1f
May 10 19:45:17  kernel: Uptime: 2h56m24s
May 10 19:45:17  kernel: Dumping 1146 out of 8042 
MB:..2%..12%..21%..31%..41%..51%..62%..72%..81%..91%---<<BOOT>>---
May 10 19:45:17  kernel: Copyright (c) 1992-2019 The FreeBSD Project.
May 10 19:45:17  kernel: Copyright (c) 1979, 1980, 1983, 1986, 1988, 
1989, 1991, 1992, 1993, 1994
May 10 19:45:17  kernel:        The Regents of the University of 
California. All rights reserved.
May 10 19:45:17  kernel: FreeBSD is a registered trademark of The 
FreeBSD Foundation.
May 10 19:45:17  kernel: FreeBSD 12.1-RELEASE-p3 GENERIC amd64
May 10 19:45:17  kernel: FreeBSD clang version 8.0.1 
(tags/RELEASE_801/final 366581) (based on LLVM 8.0.1)
May 10 19:45:17  kernel: VT(vga): resolution 640x480
May 10 19:45:17  kernel: CPU: Intel(R) Core(TM) i7-2670QM CPU @ 2.20GHz 
(2195.07-MHz K8-class CPU)
May 10 19:45:17  kernel:   Origin="GenuineIntel"  Id=0x206a7  Family=0x6 
  Model=0x2a  Stepping=7
May 10 19:45:17  kernel:   
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>
May 10 19:45:17  kernel:   
Features2=0x1fbae3bf<SSE3,PCLMULQDQ,DTES64,MON,DS_CPL,VMX,EST,TM2,SSSE3,CX16,xTPR,PDCM,PCID,SSE4.1,SSE4.2,x2APIC,POPCNT,TSCDLT,AESNI,XSAVE,OSXSAVE,AVX>
May 10 19:45:17  kernel:   AMD Features=0x28100800<SYSCALL,NX,RDTSCP,LM>
May 10 19:45:17  kernel:   AMD Features2=0x1<LAHF>
May 10 19:45:17  kernel:   XSAVE Features=0x1<XSAVEOPT>
May 10 19:45:17  kernel:   VT-x: PAT,HLT,MTF,PAUSE,EPT,UG,VPID