Notes [FreeBSD WIKI]

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  * fast test:

<code>
op@pandora-d tools> ./run_smap_test_vm.csh
Triple fault
CPU Reset (CPU 0)
RAX=00000000f000ff00 RBX=0000000000000001 RCX=0000000000000000 RDX=ffffffff80d0daa0
RSI=ffffffff800c4790 RDI=ffffffff80044100 RBP=ffffffff800440f0 RSP=ffffffff80043ef0
R8 =ffffffff80d0db80 R9 =0000000000000000 R10=0000000000000020 R11=0000000000000000
R12=ffffffff818bc8c8 R13=ffffffff8093beb0 R14=ffffffff80044100 R15=ffffffff818bcd90
RIP=ffffffff80d0d94f RFL=00000297 [--S-APC] CPL=0 II=0 A20=1 SMM=0 HLT=0
ES =0028 0000000000000000 ffffffff 00af9300 DPL=0 DS   [-WA]
CS =0020 0000000000000000 ffffffff 00af9b00 DPL=0 CS64 [-RA]
SS =0028 0000000000000000 ffffffff 00af9300 DPL=0 DS   [-WA]
DS =0028 0000000000000000 ffffffff 00af9300 DPL=0 DS   [-WA]
FS =0028 0000000000000000 ffffffff 00af9300 DPL=0 DS   [-WA]
GS =0028 ffffffff818d7d80 ffffffff 00af9300 DPL=0 DS   [-WA]
LDT=0000 0000000000000000 0000ffff 00008200 DPL=0 LDT
TR =0038 0000000000005f98 00002067 00008900 DPL=0 TSS64-avl
GDT=     ffffffff818d6350 00000067
IDT=     ffffffff8184b4c0 00000fff
CR0=80000011 CR2=0000000000005fbc CR3=0000000000044000 CR4=00000030
DR0=0000000000000000 DR1=0000000000000000 DR2=0000000000000000 DR3=0000000000000000
DR6=00000000ffff0ff0 DR7=0000000000000400
CCS=0000000000000013 CCD=ffffffffffffffee CCO=SUBL
EFER=0000000000000500
FCW=037f FSW=0000 [ST=0] FTW=00 MXCSR=00001f80
FPR0=0000000000000000 0000 FPR1=0000000000000000 0000
FPR2=0000000000000000 0000 FPR3=0000000000000000 0000
FPR4=0000000000000000 0000 FPR5=0000000000000000 0000
FPR6=0000000000000000 0000 FPR7=0000000000000000 0000
XMM00=00000000000000000000000000000000 XMM01=00000000000000000000000000000000
XMM02=00000000000000000000000000000000 XMM03=00000000000000000000000000000000
XMM04=00000000000000000000000000000000 XMM05=00000000000000000000000000000000
XMM06=00000000000000000000000000000000 XMM07=00000000000000000000000000000000
XMM08=00000000000000000000000000000000 XMM09=00000000000000000000000000000000
XMM10=00000000000000000000000000000000 XMM11=00000000000000000000000000000000
XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000
XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000
CPU Reset (CPU 0)
EAX=00000032 EBX=00000000 ECX=00000000 EDX=00000097
ESI=0000000a EDI=00100000 EBP=00000000 ESP=00000fb8
EIP=000f13d3 EFL=00000002 [-------] CPL=0 II=0 A20=1 SMM=0 HLT=0
ES =0010 00000000 ffffffff 00cf9300 DPL=0 DS   [-WA]
CS =0008 00000000 ffffffff 00cf9b00 DPL=0 CS32 [-RA]
SS =0010 00000000 ffffffff 00cf9300 DPL=0 DS   [-WA]
DS =0010 00000000 ffffffff 00cf9300 DPL=0 DS   [-WA]
FS =0010 00000000 ffffffff 00cf9300 DPL=0 DS   [-WA]
GS =0010 00000000 ffffffff 00cf9300 DPL=0 DS   [-WA]
LDT=0000 00000000 0000ffff 00008200 DPL=0 LDT
TR =0000 00000000 0000ffff 00008b00 DPL=0 TSS32-busy
GDT=     000f6688 00000037
IDT=     000f66c6 00000000
CR0=60000011 CR2=00000000 CR3=00000000 CR4=00000000
DR0=0000000000000000 DR1=0000000000000000 DR2=0000000000000000 DR3=0000000000000000
DR6=00000000ffff0ff0 DR7=0000000000000400
CCS=00000000 CCD=00000001 CCO=LOGICL
EFER=0000000000000000
FCW=037f FSW=0000 [ST=0] FTW=00 MXCSR=00001f80
FPR0=0000000000000000 0000 FPR1=0000000000000000 0000
FPR2=0000000000000000 0000 FPR3=0000000000000000 0000
FPR4=0000000000000000 0000 FPR5=0000000000000000 0000
FPR6=0000000000000000 0000 FPR7=0000000000000000 0000
XMM00=00000000000000000000000000000000 XMM01=00000000000000000000000000000000
XMM02=00000000000000000000000000000000 XMM03=00000000000000000000000000000000
XMM04=00000000000000000000000000000000 XMM05=00000000000000000000000000000000
XMM06=00000000000000000000000000000000 XMM07=00000000000000000000000000000000
</code>

<code>
op@pandora-d opBSD.git> addr2line --exe=/tmp/kernelbuild/boot/kernel/kernel ffffffff80d0d94f
/usr/data/source/git/opBSD/opBSD.git/sys/amd64/amd64/trap.c:219
</code>

  * http://en.wikibooks.org/wiki/QEMU/Monitor#logfile
  * there is the error

<code>

Breakpoint 2, getenv_string (name=0xffffffff80f922df "kern.msgbufsize", data=0xffffffff814c8cb0 "", 
    size=258) at /usr/data/source/git/opBSD/opBSD.git/sys/kern/kern_environment.c:455
455             if (dynamic_kenv) {
(gdb) c
Continuing.

Breakpoint 2, getenv_string (name=0xffffffff80f922ef "kern.maxtsiz", data=0xffffffff814c8cb0 "", 
    size=258) at /usr/data/source/git/opBSD/opBSD.git/sys/kern/kern_environment.c:455
455             if (dynamic_kenv) {
(gdb) c
Continuing.

Breakpoint 2, getenv_string (name=0xffffffff80f922fc "kern.dfldsiz", data=0xffffffff814c8cb0 "", 
    size=258) at /usr/data/source/git/opBSD/opBSD.git/sys/kern/kern_environment.c:455
455             if (dynamic_kenv) {
(gdb) c
Continuing.

Breakpoint 2, getenv_string (name=0xffffffff80f92309 "kern.maxdsiz", data=0xffffffff814c8cb0 "", 
    size=258) at /usr/data/source/git/opBSD/opBSD.git/sys/kern/kern_environment.c:455
455             if (dynamic_kenv) {
(gdb) c
Continuing.

Breakpoint 2, getenv_string (name=0xffffffff80f92316 "kern.dflssiz", data=0xffffffff814c8cb0 "", 
    size=258) at /usr/data/source/git/opBSD/opBSD.git/sys/kern/kern_environment.c:455
455             if (dynamic_kenv) {
(gdb) c
Continuing.

Breakpoint 2, getenv_string (name=0xffffffff80f92323 "kern.maxssiz", data=0xffffffff814c8cb0 "", 
    size=258) at /usr/data/source/git/opBSD/opBSD.git/sys/kern/kern_environment.c:455
455             if (dynamic_kenv) {
(gdb) c
Continuing.

Breakpoint 2, getenv_string (name=0xffffffff80f92330 "kern.sgrowsiz", data=0xffffffff814c8cb0 "", 
    size=258) at /usr/data/source/git/opBSD/opBSD.git/sys/kern/kern_environment.c:455
455             if (dynamic_kenv) {
(gdb) c
Continuing.

Breakpoint 2, getenv_string (name=0xffffffff80f9233e "kern.ngroups", data=0xffffffff814c8cb0 "", 
    size=258) at /usr/data/source/git/opBSD/opBSD.git/sys/kern/kern_environment.c:455
455             if (dynamic_kenv) {
(gdb) c
Continuing.

Breakpoint 2, getenv_string (name=0xffffffff80f9234b "kern.pid_max", data=0xffffffff814c8cb0 "", 
    size=258) at /usr/data/source/git/opBSD/opBSD.git/sys/kern/kern_environment.c:455
455             if (dynamic_kenv) {
(gdb) c
Continuing.

Breakpoint 2, getenv_string (name=0xffffffff80f92358 "vfs.unmapped_buf_allowed", 
    data=0xffffffff814c8cd0 "", size=258)
    at /usr/data/source/git/opBSD/opBSD.git/sys/kern/kern_environment.c:455
455             if (dynamic_kenv) {
(gdb) c
Continuing.

triple fault itt:

hammer_time (modulep=<value optimized out>, physfree=29208576)
    at /usr/data/source/git/opBSD/opBSD.git/sys/amd64/amd64/machdep.c:1898
1898            PCPU_SET(prvspace, pc);
(gdb) 
1899            PCPU_SET(curthread, &thread0);
(gdb) 
1900            PCPU_SET(tssp, &common_tss[0]);
(gdb) 
1901            PCPU_SET(commontssp, &common_tss[0]);
(gdb) 
1902            PCPU_SET(tss, (struct system_segment_descriptor *)&gdt[GPROC0_SEL]);
(gdb) 
1903            PCPU_SET(ldt, (struct system_segment_descriptor *)&gdt[GUSERLDT_SEL]);
(gdb) 
1904            PCPU_SET(fs32p, &gdt[GUFS32_SEL]);
(gdb) 
1905            PCPU_SET(gs32p, &gdt[GUGS32_SEL]);
(gdb) 
1915            mutex_init();
(gdb) 
mutex_init () at /usr/data/source/git/opBSD/opBSD.git/sys/kern/kern_mutex.c:952
952             init_turnstiles();
(gdb) 
init_turnstiles () at /usr/data/source/git/opBSD/opBSD.git/sys/kern/subr_turnstile.c:364
364                     LIST_INIT(&turnstile_chains[i].tc_turnstiles);
(gdb) 
365                     mtx_init(&turnstile_chains[i].tc_lock, "turnstile chain",
(gdb) 
_mtx_init (c=0xffffffff8155d160, name=0xffffffff80f94b80 "turnstile chain", type=0x0, opts=1)
    at /usr/data/source/git/opBSD/opBSD.git/sys/kern/kern_mutex.c:871
871             m = mtxlock2mtx(c);
(gdb) 
875             ASSERT_ATOMIC_LOAD_PTR(m->mtx_lock,
(gdb) 
885             if (opts & MTX_SPIN)
(gdb) 
892             if (opts & MTX_RECURSE)
(gdb) 
894             if ((opts & MTX_NOWITNESS) == 0)
(gdb) 
896             if (opts & MTX_DUPOK)
(gdb) 
898             if (opts & MTX_NOPROFILE)
(gdb) 
902             lock_init(&m->lock_object, class, name, type, flags);
(gdb) 
lock_init (lock=0xffffffff8155d148, class=0xffffffff81463730, 
    name=0xffffffff80f94b80 "turnstile chain", type=0x0, flags=131072)
    at /usr/data/source/git/opBSD/opBSD.git/sys/kern/subr_lock.c:78
78              KASSERT(!lock_initialized(lock), ("lock \"%s\" %p already initialized",
(gdb) 
83                      if (lock_classes[i] == class) {
(gdb) 
84                              lock->lo_flags = i << LO_CLASSSHIFT;
(gdb) 
90              lock->lo_name = name;
(gdb) 
91              lock->lo_flags |= flags | LO_INITIALIZED;
(gdb) 
93              WITNESS_INIT(lock, (type != NULL) ? type : name);
(gdb) 
witness_init (lock=0xffffffff8155d148, type=0xffffffff80f94b80 "turnstile chain")
    at /usr/data/source/git/opBSD/opBSD.git/sys/kern/subr_witness.c:809
809             class = LOCK_CLASS(lock);

ITT A HIBA:

0xffffffff809500f0 <witness_init+0>:    push   %rbp
0xffffffff809500f1 <witness_init+1>:    mov    %rsp,%rbp
0xffffffff809500f4 <witness_init+4>:    push   %r15
0xffffffff809500f6 <witness_init+6>:    push   %r14
0xffffffff809500f8 <witness_init+8>:    push   %rbx
0xffffffff809500f9 <witness_init+9>:    push   %rax
0xffffffff809500fa <witness_init+10>:   mov    %rsi,%r14
0xffffffff809500fd <witness_init+13>:   mov    %rdi,%rbx
0xffffffff80950100 <witness_init+16>:   mov    0x8(%rbx),%eax
0xffffffff80950103 <witness_init+19>:   mov    $0x418,%ecx
>>> 0xffffffff80950108 <witness_init+24>:   (bad)  
0xffffffff80950109 <witness_init+25>:   loop   0xffffffff8095017b <witness_init+139>
>>> 0xffffffff8095010b <witness_init+27>:   (bad)  
0xffffffff8095010c <witness_init+28>:   enterq $0x8b4c,$0x3c
0xffffffff80950110 <witness_init+32>:   int    $0xd0
0xffffffff80950112 <witness_init+34>:   stos   %al,%es:(%rdi)
0xffffffff80950113 <witness_init+35>:   rex.RX subl   $0xf6412574,0x80000(%rcx)
0xffffffff8095011e <witness_init+46>:   rex.RXB or     %r9b,(%r8)
0xffffffff80950121 <witness_init+49>:   jne    0xffffffff80950141 <witness_init+81>
0xffffffff80950123 <witness_init+51>:   mov    (%r15),%rdx
0xffffffff80950126 <witness_init+54>:   mov    (%rbx),%rcx
0xffffffff80950129 <witness_init+57>:   mov    $0xffffffff80f95af0,%rdi
0xffffffff80950130 <witness_init+64>:   mov    $0xffffffff80f95b17,%rsi

ffffffff809500f0 <witness_init>:
ffffffff809500f0:       55                      push   %rbp
ffffffff809500f1:       48 89 e5                mov    %rsp,%rbp
ffffffff809500f4:       41 57                   push   %r15
ffffffff809500f6:       41 56                   push   %r14
ffffffff809500f8:       53                      push   %rbx
ffffffff809500f9:       50                      push   %rax
ffffffff809500fa:       49 89 f6                mov    %rsi,%r14
ffffffff809500fd:       48 89 fb                mov    %rdi,%rbx
ffffffff80950100:       8b 43 08                mov    0x8(%rbx),%eax
ffffffff80950103:       b9 18 04 00 00          mov    $0x418,%ecx
ffffffff80950108:       c4                      (bad)  
ffffffff80950109:       e2 70                   loop   ffffffff8095017b <witness_init+0x8b>
ffffffff8095010b:       f7                      (bad)  
ffffffff8095010c:       c8 4c 8b 3c             enterq $0x8b4c,$0x3c
ffffffff80950110:       cd d0                   int    $0xd0
</code>

<code>
(kgdb) info break
Num Type           Disp Enb Address            What
5   breakpoint     keep y   0xffffffff80e187c6 in atpic_reset at cpufunc.h:260
6   breakpoint     keep y   0xffffffff808b1d00 in cninit_finish
                                               at /usr/data/source/git/opBSD/opBSD.git/sys/kern/kern_cons.c:162
7   breakpoint     keep y   0xffffffff808b18c0 in cninit
                                               at /usr/data/source/git/opBSD/opBSD.git/sys/kern/kern_cons.c:109  
        breakpoint already hit 2 times
8   breakpoint     keep y   0xffffffff808b1c74 in cnselect
                                               at /usr/data/source/git/opBSD/opBSD.git/sys/kern/kern_cons.c:236
(kgdb) b cnremove
Breakpoint 9 at 0xffffffff808b1a40: file /usr/data/source/git/opBSD/opBSD.git/sys/kern/kern_cons.c, line 200.
(kgdb) c
Continuing.

Breakpoint 7, cninit () at /usr/data/source/git/opBSD/opBSD.git/sys/kern/kern_cons.c:109
109     {
(kgdb) c
Continuing.

Breakpoint 9, cnremove (cn=0xffffffff814048d8)
    at /usr/data/source/git/opBSD/opBSD.git/sys/kern/kern_cons.c:200
200     {
(kgdb) bt
#0  cnremove (cn=0xffffffff814048d8) at /usr/data/source/git/opBSD/opBSD.git/sys/kern/kern_cons.c:200
#1  0xffffffff808b191b in cninit () at /usr/data/source/git/opBSD/opBSD.git/sys/kern/kern_cons.c:129
#2  0xffffffff80cf0196 in hammer_time (modulep=<value optimized out>, physfree=<value optimized out>)
    at /usr/data/source/git/opBSD/opBSD.git/sys/amd64/amd64/machdep.c:1961
#3  0xffffffff802da024 in btext () at /usr/data/source/git/opBSD/opBSD.git/sys/amd64/amd64/locore.S:79
#4  0x0000000000000000 in ?? ()
(kgdb) c
Continuing.

Breakpoint 7, cninit () at /usr/data/source/git/opBSD/opBSD.git/sys/kern/kern_cons.c:109
109     {
(kgdb) c
Continuing.

Breakpoint 9, cnremove (cn=0xffffffff814048d8)
    at /usr/data/source/git/opBSD/opBSD.git/sys/kern/kern_cons.c:200
200     {
(kgdb) s
204             STAILQ_FOREACH(cnd, &cn_devlist, cnd_next) {
(kgdb) 
229     }
(kgdb) 
cninit () at /usr/data/source/git/opBSD/opBSD.git/sys/kern/kern_cons.c:131
131                     if (cn->cn_ops == NULL)
(kgdb) 
133                     cn->cn_ops->cn_probe(cn);
(kgdb) 
sc_cnprobe (cp=0xffffffff814048d8)
    at /usr/data/source/git/opBSD/opBSD.git/sys/dev/syscons/syscons.c:1592
1592        if (getenv("hw.syscons.disable")) {
(kgdb) ni
0xffffffff80734925      1592        if (getenv("hw.syscons.disable")) {
(kgdb) 
0xffffffff8073492a      1592        if (getenv("hw.syscons.disable")) {
(kgdb) 
0xffffffff8073492d      1592        if (getenv("hw.syscons.disable")) {
(kgdb) 
0xffffffff80734937      1593            cp->cn_pri = CN_DEAD;
(kgdb) 
0xffffffff8073493b      1593            cp->cn_pri = CN_DEAD;
(kgdb) 
1597        cp->cn_pri = sc_get_cons_priority(&unit, &flags);
(kgdb) 
</code>

triple fault on 1597        cp->cn_pri = sc_get_cons_priority(&unit, &flags); line
**this error caused by compiler error, and occurred when in /etc/make.conf set CPUTYPE to core-avx2**