[Bug 226930] [amd] panic: Unrecoverable machine check exception

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=226930

            Bug ID: 226930
           Summary: [amd] panic: Unrecoverable machine check exception
           Product: Base System
           Version: CURRENT
          Hardware: amd64
                OS: Any
            Status: New
          Severity: Affects Only Me
          Priority: ---
         Component: kern
          Assignee: freebsd-bugs at FreeBSD.org
          Reporter: vidwer+fbsdbugs at gmail.com

Running FreeBSD 12.0-CURRENT r331531, machine crashes after having decompressed
about 100GB of a very large (>850GB) gzip file using gzip/unpigz.

st_mtime and st_birthtime of the output file show
"Mar 25 22:20:22 2018" "Mar 25 21:34:22 2018"

Unread portion of the kernel message buffer:
MCA: Bank 1, Status 0xcc00001000010151
MCA: Global Cap 0x0000000000000107, Status 0x0000000000000004
MCA: Vendor "AuthenticAMD", ID 0x610f01, APIC ID 18
MCA: CPU 2 COR OVER ICACHE L1 IRD error
MCA: Address 0xffff80f8aa21
MCA: Misc 0xc01b0fff00000000
MCA: Bank 5, Status 0xb0800000000c0e0f
MCA: Global Cap 0x0000000000000107, Status 0x0000000000000004
MCA: Vendor "AuthenticAMD", ID 0x610f01, APIC ID 18
MCA: CPU 2 UNCOR BUSLG ??? ERR Other
panic: Unrecoverable machine check exception
cpuid = 2
time = 1522009224
KDB: stack backtrace:
db_trace_self_wrapper() at db_trace_self_wrapper+0x2b/frame 0xfffffe0003581e40
vpanic() at vpanic+0x18d/frame 0xfffffe0003581ea0
panic() at panic+0x43/frame 0xfffffe0003581f00
mca_intr() at mca_intr+0x9b/frame 0xfffffe0003581f20
mchk_calltrap() at mchk_calltrap+0x8/frame 0xfffffe0003581f20
--- trap 0x1c, rip = 0xffffffff80f8aa33, rsp = 0xfffffe003dab07d0, rbp =
0xfffffe003dab0890 ---
apic_isr1_u() at apic_isr1_u+0xa9/frame 0xfffffe003dab0890
acpi_cpu_idle() at acpi_cpu_idle+0x2ee/frame 0xfffffe003dab08e0
cpu_idle_acpi() at cpu_idle_acpi+0x3f/frame 0xfffffe003dab0900
cpu_idle() at cpu_idle+0x8f/frame 0xfffffe003dab0920
sched_idletd() at sched_idletd+0x517/frame 0xfffffe003dab09f0
fork_exit() at fork_exit+0x84/frame 0xfffffe003dab0a30
fork_trampoline() at fork_trampoline+0xe/frame 0xfffffe003dab0a30
--- trap 0, rip = 0, rsp = 0, rbp = 0 ---
KDB: enter: panic

__curthread () at ./machine/pcpu.h:230
230             __asm("movq %%gs:%1,%0" : "=r" (td)
(kgdb) list *0xffffffff80f8aa33
0xffffffff80f8aa33 is at /usr/src/sys/amd64/amd64/apic_vector.S:118.
113             SUPERALIGN_TEXT
114     IDTVEC(spuriousint)
115             /* No EOI cycle used here */
116             jmp     doreti_iret
117     
118             ISR_VEC 1, apic_isr1
119             ISR_VEC 2, apic_isr2
120             ISR_VEC 3, apic_isr3
121             ISR_VEC 4, apic_isr4
122             ISR_VEC 5, apic_isr5
(kgdb) bt
#0  __curthread () at ./machine/pcpu.h:230
#1  doadump (textdump=0) at /usr/src/sys/kern/kern_shutdown.c:361
#2  0xffffffff80424aeb in db_dump (dummy=<optimized out>, dummy2=<unavailable>,
dummy3=<unavailable>, dummy4=<unavailable>)
    at /usr/src/sys/ddb/db_command.c:574
#3  0xffffffff804248b9 in db_command (last_cmdp=<optimized out>,
cmd_table=<optimized out>, dopager=<optimized out>)
    at /usr/src/sys/ddb/db_command.c:481
#4  0xffffffff80424634 in db_command_loop () at
/usr/src/sys/ddb/db_command.c:534
#5  0xffffffff8042785f in db_trap (type=<optimized out>, code=<optimized out>)
at /usr/src/sys/ddb/db_main.c:250
#6  0xffffffff80b35273 in kdb_trap (type=3, code=-61456, tf=<optimized out>) at
/usr/src/sys/kern/subr_kdb.c:697
#7  0xffffffff80fad8a8 in trap (frame=0xfffffe0003581d70) at
/usr/src/sys/amd64/amd64/trap.c:547
#8  0xffffffff80f89a8c in alltraps_pushregs_no_rax () at
/usr/src/sys/amd64/amd64/exception.S:223
#9  0xffffffff81be9b78 in ?? ()
#10 0x0000000000000080 in ?? ()
#11 0xfffffe0003581d30 in ?? ()
#12 0x0000000000000080 in ?? ()
#13 0x0000000000000278 in ?? ()
#14 0x00000000000001d0 in ?? ()
#15 0x0000000000000012 in ?? ()
#16 0xffffffff8121d87b in ?? ()
#17 0xfffffe0003581e40 in ?? ()
#18 0xffffffff81adb7c0 in local_info ()
#19 0x0000000000000010 in ?? ()
#20 0xffffffff81e10901 in __pcpu ()
#21 0x0000000002814000 in ?? ()
#22 0xfffffe0003581ee0 in ?? ()
#23 0xfffff80003346000 in ?? ()
#24 0x001b001300000003 in ?? ()
#25 0x0000000000000000 in ?? ()

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