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Date:      Thu, 31 Mar 2022 22:00:55 +0000
From:      bugzilla-noreply@freebsd.org
To:        bugs@FreeBSD.org
Subject:   [Bug 262965] Fatal trap 12: page fault while in kernel mode
Message-ID:  <bug-262965-227@https.bugs.freebsd.org/bugzilla/>

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D262965

            Bug ID: 262965
           Summary: Fatal trap 12: page fault while in kernel mode
           Product: Base System
           Version: 13.0-RELEASE
          Hardware: amd64
                OS: Any
            Status: New
          Severity: Affects Only Me
          Priority: ---
         Component: kern
          Assignee: bugs@FreeBSD.org
          Reporter: budijanto@studiokaraoke.co.id

# /var/log/messages

[...]
Apr  1 03:51:10 BEC-DB-P1 kernel: Fatal trap 12: page fault while in kernel
mode
Apr  1 03:51:10 BEC-DB-P1 kernel: cpuid =3D 3; apic id =3D 03
Apr  1 03:51:10 BEC-DB-P1 kernel: fault virtual address =3D 0xfffff821d0135=
d48
Apr  1 03:51:10 BEC-DB-P1 kernel: fault code        =3D supervisor write da=
ta,
page not present
Apr  1 03:51:10 BEC-DB-P1 kernel: instruction pointer   =3D
0x20:0xffffffff828d43d5
Apr  1 03:51:10 BEC-DB-P1 kernel: stack pointer         =3D
0x28:0xfffffe011b408e00
Apr  1 03:51:10 BEC-DB-P1 kernel: frame pointer         =3D
0x28:0xfffffe011b408e80
Apr  1 03:51:10 BEC-DB-P1 kernel: code segment      =3D base 0x0, limit 0xf=
ffff,
type 0x1b
Apr  1 03:51:10 BEC-DB-P1 kernel:           =3D DPL 0, pres 1, long 1, def3=
2 0,
gran 1
Apr  1 03:51:10 BEC-DB-P1 kernel: processor eflags  =3D interrupt enabled,
resume, IOPL =3D 0
Apr  1 03:51:10 BEC-DB-P1 kernel: current process       =3D 59 (txg_thread_=
enter)
Apr  1 03:51:10 BEC-DB-P1 kernel: trap number       =3D 12
Apr  1 03:51:10 BEC-DB-P1 kernel: panic: page fault
Apr  1 03:51:10 BEC-DB-P1 kernel: cpuid =3D 3
Apr  1 03:51:10 BEC-DB-P1 kernel: time =3D 1648759804
Apr  1 03:51:10 BEC-DB-P1 kernel: KDB: stack backtrace:
Apr  1 03:51:10 BEC-DB-P1 kernel: #0 0xffffffff80c57525 at kdb_backtrace+0x=
65
Apr  1 03:51:10 BEC-DB-P1 kernel: #1 0xffffffff80c09f01 at vpanic+0x181
Apr  1 03:51:10 BEC-DB-P1 kernel: #2 0xffffffff80c09d73 at panic+0x43
Apr  1 03:51:10 BEC-DB-P1 kernel: #3 0xffffffff8108b1a7 at trap_fatal+0x387
Apr  1 03:51:10 BEC-DB-P1 kernel: #4 0xffffffff8108b1ff at trap_pfault+0x4f
Apr  1 03:51:10 BEC-DB-P1 kernel: #5 0xffffffff8108a85d at trap+0x27d
Apr  1 03:51:10 BEC-DB-P1 kernel: #6 0xffffffff81061d98 at calltrap+0x8
Apr  1 03:51:10 BEC-DB-P1 kernel: #7 0xffffffff828d712a at
dsl_scan_visitbp+0x99a
Apr  1 03:51:10 BEC-DB-P1 kernel: #8 0xffffffff828d6a66 at
dsl_scan_visitbp+0x2d6
Apr  1 03:51:10 BEC-DB-P1 kernel: #9 0xffffffff828d6d23 at
dsl_scan_visitbp+0x593
Apr  1 03:51:10 BEC-DB-P1 kernel: #10 0xffffffff828d6a66 at
dsl_scan_visitbp+0x2d6
Apr  1 03:51:10 BEC-DB-P1 kernel: #11 0xffffffff828d6a66 at
dsl_scan_visitbp+0x2d6
Apr  1 03:51:10 BEC-DB-P1 kernel: #12 0xffffffff828d6a66 at
dsl_scan_visitbp+0x2d6
Apr  1 03:51:10 BEC-DB-P1 kernel: #13 0xffffffff828d6a66 at
dsl_scan_visitbp+0x2d6
Apr  1 03:51:10 BEC-DB-P1 kernel: #14 0xffffffff828d6a66 at
dsl_scan_visitbp+0x2d6
Apr  1 03:51:10 BEC-DB-P1 kernel: #15 0xffffffff828d6b40 at
dsl_scan_visitbp+0x3b0
Apr  1 03:51:10 BEC-DB-P1 kernel: #16 0xffffffff828d5dbf at
dsl_scan_visit_rootbp+0x12f
Apr  1 03:51:10 BEC-DB-P1 kernel: #17 0xffffffff828d6063 at
dsl_scan_visitds+0xe3
Apr  1 03:51:10 BEC-DB-P1 kernel: Uptime: 1d2h43m39s
Apr  1 03:51:10 BEC-DB-P1 kernel: Dumping 2853 out of 16246
MB:..1%..11%..21%..31%..41%..51%..61%..71%..81%..91%---<<BOOT>>---
[...]

# sysctl -a | grep 'hw.*mem'
hw.physmem: 17035481088
hw.usermem: 14230319104
hw.realmem: 17179869184
hw.pci.host_mem_start: 2147483648
hw.cbb.start_memory: 2281701376

# top -b
last pid:  2621;  load averages:  0.81,  0.73,  0.54  up 0+00:54:00 04:44:40
28 processes:  1 running, 27 sleeping
CPU 0:  0.0% user,  0.0% nice,  6.2% system,  6.5% interrupt, 87.2% idle
CPU 1:  0.0% user,  0.0% nice,  6.7% system,  0.0% interrupt, 93.2% idle
CPU 2:  0.0% user,  0.0% nice,  6.0% system,  0.2% interrupt, 93.8% idle
CPU 3:  0.0% user,  0.0% nice,  6.0% system,  0.2% interrupt, 93.8% idle
Mem: 159M Active, 2714M Inact, 2673M Wired, 345M Buf, 10G Free
ARC: 795M Total, 717M MFU, 66M MRU, 10M Header, 1856K Other
     755M Compressed, 5172M Uncompressed, 6.85:1 Ratio
Swap: 3979M Total, 3979M Free

  PID USERNAME    THR PRI NICE   SIZE    RES STATE    C   TIME    WCPU COMM=
AND
  968 root          1  20    0    32M    12M select   0   0:03   0.00% snmpd
 2227 mysql        37  20    0  2737M   279M select   3   0:02   0.00% mysq=
ld
  944 nobody        1  20    0    18M  7272K select   2   0:00   0.00% open=
vpn
  938 ntpd          1  20    0    21M  5028K select   3   0:00   0.00% ntpd
  360 _pflogd       1  20    0    13M  2996K bpf      3   0:00   0.00% pflo=
gd
 2372 wilson        1  20    0    21M  9324K select   1   0:00   0.00% sshd
  999 mysql         1  52    0    13M  3020K wait     0   0:00   0.00% sh
 2378 root          1  20    0    16M  4840K pause    3   0:00   0.00% csh
  856 root          1  20    0    13M  2624K select   1   0:00   0.00% sysl=
ogd
 1118 root          1  23    0    13M  2644K nanslp   3   0:00   0.00% cron
 2369 root          1  20    0    21M  9284K select   2   0:00   0.00% sshd
 2373 wilson        1  21    0    14M  4192K pause    2   0:00   0.00% csh
 2377 wilson        1  20    0    13M  3168K wait     2   0:00   0.00% su
  660 root          1  20    0    11M  1412K select   3   0:00   0.00% devd
  664 root          1  20    0    19M  5840K select   1   0:00   0.00% zfsd
 1187 root          1  52    0    13M  2268K ttyin    1   0:00   0.00% getty
 1191 root          1  52    0    13M  2268K ttyin    3   0:00   0.00% getty
 1184 root          1  52    0    13M  2268K ttyin    3   0:00   0.00% getty

# zpool status -v
  pool: pool
 state: ONLINE
  scan: scrub in progress since Fri Apr  1 01:00:00 2022
    4.75T scanned at 0B/s, 3.96T issued at 0B/s, 4.91T total
    0B repaired, 80.60% done, no estimated completion time
config:

    NAME                             STATE     READ WRITE CKSUM
    pool                             ONLINE       0     0     0
      diskid/DISK-WD-WMC1T1587601p1  ONLINE       0     0     0
      diskid/DISK-WD-WCC1T1170612p1  ONLINE       0     0     0
      diskid/DISK-Z1F5T8W1p1         ONLINE       0     0     0

errors: No known data errors

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