[Bug 224359] ipmi kernel panic

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=224359

            Bug ID: 224359
           Summary: ipmi kernel panic
           Product: Base System
           Version: 11.0-STABLE
          Hardware: amd64
                OS: Any
            Status: New
          Severity: Affects Only Me
          Priority: ---
         Component: kern
          Assignee: freebsd-bugs at FreeBSD.org
          Reporter: thomsonk at yandex.com

Hi,

I am collecting my servers temperature, fan speeds and sel logs with ipmitool.
Yesterday, one of it get kernel panic, caused by ipmi.

Os: FreeBSD 11 Stable r320710
HW: DELL R730
Scripts:
/usr/local/bin/ipmitool sel list
/usr/local/bin/ipmitool sdr type "Power Supply"
/usr/local/bin/ipmitool sdr type "Fan"
/usr/local/bin/ipmitool sdr type Temperature

---------------------------------------------------------

ipmi0: KCS: Failed to read address
ipmi0: KCS error: 01
ipmi0: KCS: Failed to read address
ipmi0: KCS error: 01
ipmi0: KCS: Reply address mismatch
ipmi0: KCS error: 01
mfi0: 1988 (566103600s/0x0020/info) - Patrol Read started
mfi0: 1989 (566119684s/0x0020/info) - Patrol Read complete
ipmi0: KCS: Reply address mismatch
ipmi0: KCS error: 01
ipmi0: KCS: Reply address mismatch
ipmi0: KCS error: 01


Fatal trap 12: page fault while in kernel mode
cpuid = 21; apic id = 15
fault virtual address   = 0x45cc0018
fault code              = supervisor read data, page not present
instruction pointer     = 0x20:0xffffffff80c530c6
stack pointer           = 0x28:0xfffffe2021e9fa20
frame pointer           = 0x28:0xfffffe2021e9fa30
code segment            = base 0x0, limit 0xfffff, type 0x1b
                        = DPL 0, pres 1, long 1, def32 0, gran 1
processor eflags        = interrupt enabled, resume, IOPL = 0
current process         = 49 (ipmi0: kcs)
trap number             = 12
panic: page fault
cpuid = 21
Uptime: 20d19h11m45s

kgdb) #0  doadump (textdump=1) at pcpu.h:222
#1  0xffffffff807c5176 in kern_reboot (howto=260)
    at /usr/src/sys/kern/kern_shutdown.c:366
#2  0xffffffff807c5650 in vpanic (fmt=<value optimized out>,
    ap=<value optimized out>) at /usr/src/sys/kern/kern_shutdown.c:759
#3  0xffffffff807c5483 in panic (fmt=<value optimized out>)
    at /usr/src/sys/kern/kern_shutdown.c:690
#4  0xffffffff80be6cb2 in trap_fatal (frame=0xfffffe2021e9f960, eva=1170997272)
    at /usr/src/sys/amd64/amd64/trap.c:801
#5  0xffffffff80be6d09 in trap_pfault (frame=0xfffffe2021e9f960, usermode=0)
    at pcpu.h:222
#6  0xffffffff80be6546 in trap (frame=0xfffffe2021e9f960)
    at /usr/src/sys/amd64/amd64/trap.c:421
#7  0xffffffff80bcbff1 in calltrap ()
    at /usr/src/sys/amd64/amd64/exception.S:236
#8  0xffffffff80c530c6 in ipmi_complete_request (sc=0xfffff80116a9ac00,
    req=0xfffff812373de000) at /usr/src/sys/dev/ipmi/ipmi.c:550
#9  0xffffffff80c55b3b in kcs_loop (arg=0xfffff80116a9ac00)
    at /usr/src/sys/dev/ipmi/ipmi_kcs.c:485
#10 0xffffffff80787df5 in fork_exit (callout=0xffffffff80c55a80 <kcs_loop>,
    arg=0xfffff80116a9ac00, frame=0xfffffe2021e9fac0)
    at /usr/src/sys/kern/kern_fork.c:1042
#11 0xffffffff80bcc52e in fork_trampoline ()
    at /usr/src/sys/amd64/amd64/exception.S:611
#12 0x0000000000000000 in ?? ()

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