panic by "acpidump -dt" on -current(Nov 22)

[Kengo NAKAHARA <k-nakahara%iij.ad.jp@localhost>]

Hi,

I met a panic when I do "acpidump -dt" on -current(Nov 22). The specific
version is the following commit.
    https://mail-index.netbsd.org/source-changes/2017/11/21/msg089839.html
# It includes chs@n.o's fix of pmap_enter_ma() and uvm_fault_upper_enter().

Here is the panic message and backtrace.
====================
panic: prevented access to 0x10 (SMAP)
fatal breakpoint trap in supervisor mode
trap type 1 code 0 rip 0xffffffff8021d2d5 cs 0x8 rflags 0x246 cr2 0x10 ilevel 0 rsp 0xffffe40110c4b7e0
curlwp 0xffffe4027b7cd220 pid 866.1 lowest kstack 0xffffe40110c482c0
Stopped in pid 866.1 (acpidump) at      netbsd:breakpoint+0x5:  leave
db{6}> bt
breakpoint() at netbsd:breakpoint+0x5
vpanic() at netbsd:vpanic+0x140
panic() at netbsd:panic+0x3c
trap() at netbsd:trap+0xbf0
--- trap (number 6) ---
pmap_enter_ma() at netbsd:pmap_enter_ma+0xe2a
pmap_enter_default() at netbsd:pmap_enter_default+0x1d
udv_fault() at netbsd:udv_fault+0x151
uvm_fault_internal() at netbsd:uvm_fault_internal+0x6d4
trap() at netbsd:trap+0x3f0
--- trap (number 6) ---
1568033cf:
====================

Here is dmesg.
    http://netbsd.org/~knakahara/20171122-acpidump-panic-dmesg

msaitoh@n.o met the same panic on other machine.

Does anyone meet this issue?


Thanks,

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Internet Initiative Japan Inc.

Device Engineering Section,
IoT Platform Development Department,
Network Division,
Technology Unit

Kengo NAKAHARA <k-nakahara%iij.ad.jp@localhost>