Hi,
While running my nightly regression tests, I compiled
/ports/misc/posixtestsuite. It was the first time that I was running
regress while having some other load on the machine. During
regress/lib/libc/ieeefp/except the machine hang. It has 2 CPUs.
The final output of the test:
===> ieeefp/except
cc -O2 -pipe -MD -MP -c /usr/src/regress/lib/libc/ieeefp/except/except.c
cc -o except except.o
./except fltdiv
This kernel was running:
OpenBSD 6.3-current (GENERIC.MP) #592: Mon May 7 10:07:12 MDT 2018
[email protected]:/usr/src/sys/arch/i386/compile/GENERIC.MP
I could break into ddb:
Stopped at db_enter+0x4: popl %ebp
ddb{0}> trace
db_enter() at db_enter+0x4
comintr(d577d000) at comintr+0x21e
intr_handler(f58be8e4,d577c840) at intr_handler+0x30
Xintr_ioapic3_untramp() at Xintr_ioapic3_untramp+0xd7
--- interrupt ---
pmap_tlb_shootwait() at pmap_tlb_shootwait+0x12
pmap_do_remove_pae(d0d33ce0,f55f2000,f55f3000,0) at pmap_do_remove_pae+0x2ac
pmap_remove(d0d33ce0,f55f2000,f55f3000) at pmap_remove+0x18
uvm_unmap_kill_entry(d0d2d2b4,d4c810dc) at uvm_unmap_kill_entry+0xde
uvm_unmap_remove(d0d2d2b4,f55f2000,f55f3000,f58bea00,0,1) at uvm_unmap_remove+0
x194
sys_kbind(d435dcf0,f58bea80,f58bea78) at sys_kbind+0x295
syscall() at syscall+0x25e
--- syscall (number -813868376) ---
end of kernel
0x7d6558e8:
CPU 0 is running clang, CPU 1 is running the except test script.
ddb{0}> ps
PID TID PPID UID S FLAGS WAIT COMMAND
92284 394442 70506 0 7 0x2 except
*47266 113041 37786 55 7 0x2 cc
37786 281652 35994 55 3 0x10008a pause sh
70506 372899 71391 0 3 0x10008a pause make
71391 488915 75345 0 3 0x10008a pause sh
75345 253329 29923 0 3 0x10008a pause make
29923 89609 68217 0 3 0x10008a pause sh
68217 294846 81420 0 3 0x10008a pause make
51311 445816 20823 0 2 0x491 perl
81420 149032 81906 0 3 0x10008a pause sh
81906 389989 44981 0 3 0x10008a pause make
24237 35914 94782 0 3 0x100082 piperd gzip
94782 375463 44981 0 3 0x100082 piperd pax
44981 114211 25893 0 3 0x82 piperd perl
25893 239558 5387 0 3 0x10008a pause ksh
5387 100109 39691 0 3 0x92 select sshd
65456 428886 57598 0 3 0x100083 kqread tail
57598 364467 56435 0 3 0x10008b pause ksh
39040 394741 84200 55 2 0x482 perl
84200 57590 22769 55 3 0x10008a pause sh
22769 388112 71080 55 3 0x10008a pause make
71080 289240 55503 55 3 0x10008a pause sh
55503 177103 20823 55 3 0x10008a pause make
20823 473630 90353 0 3 0x93 wait perl
35994 500360 35455 55 3 0x82 piperd gmake
35455 82895 18413 55 3 0x10008a pause make
18413 9872 9766 55 3 0x10008a pause sh
9766 29157 60819 55 3 0x10008a pause make
60819 198028 51400 55 3 0x10008a pause sh
51400 455284 1 55 3 0x10008a pause make
90353 444304 56435 0 3 0x10008b pause ksh
56435 213296 1 0 2 0x100480 tmux
12943 273120 79318 0 3 0x100083 kqread tmux
79318 90427 49332 0 3 0x10008b pause ksh
49332 480938 39691 0 3 0x92 select sshd
79215 221858 1 0 2 0x100083 getty
5182 91398 1 0 3 0x100083 ttyin getty
68061 353121 1 0 3 0x100083 ttyin getty
61973 471346 1 0 3 0x100083 ttyin getty
58677 314567 1 0 3 0x100083 ttyin getty
26310 59684 1 0 3 0x100083 ttyin getty
77772 266793 1 0 2 0x100498 cron
69017 469788 1 99 3 0x100090 poll sndiod
67250 378711 1 110 3 0x100090 poll sndiod
7419 486904 35256 95 3 0x100092 kqread smtpd
87223 110989 35256 103 3 0x100092 kqread smtpd
22973 257799 35256 95 3 0x100092 kqread smtpd
22893 197212 35256 95 3 0x100092 kqread smtpd
55776 302222 35256 95 3 0x100092 kqread smtpd
67856 519997 35256 95 3 0x100092 kqread smtpd
35256 194026 1 0 3 0x100080 kqread smtpd
39691 482995 1 0 3 0x80 select sshd
91848 227431 0 0 2 0x14600 acct
57929 439430 0 0 3 0x14280 nfsidl nfsio
22984 278690 0 0 3 0x14280 nfsidl nfsio
68247 280175 0 0 3 0x14280 nfsidl nfsio
84145 68638 0 0 3 0x14280 nfsidl nfsio
64212 518189 1 0 3 0x100080 poll ntpd
55093 242273 10888 83 3 0x100092 poll ntpd
10888 104846 1 83 2 0x100492 ntpd
49017 6336 81641 74 2 0x100492 pflogd
81641 88482 1 0 3 0x80 netio pflogd
83731 475689 54758 73 2 0x100490 syslogd
54758 368953 1 0 3 0x100082 netio syslogd
43387 397146 1 77 3 0x100090 poll dhclient
32556 319307 1 0 3 0x80 poll dhclient
52892 503177 8869 115 3 0x100092 kqread slaacd
12458 116305 8869 115 3 0x100092 kqread slaacd
8869 503520 1 0 3 0x80 kqread slaacd
71440 285881 0 0 3 0x14200 bored radeon-crtc
6819 122004 0 0 3 0x14200 bored ttm_swap
95559 405938 0 0 2 0x14200 zerothread
19820 329414 0 0 3 0x14200 aiodoned aiodoned
50141 351707 0 0 2 0x14200 update
82368 523939 0 0 3 0x14200 cleaner cleaner
45425 519091 0 0 3 0x14200 reaper reaper
42430 481629 0 0 3 0x14200 pgdaemon pagedaemon
4558 298373 0 0 3 0x14200 bored crynlk
87050 360681 0 0 3 0x14200 bored crypto
41228 194479 0 0 3 0x14200 usbtsk usbtask
67492 97981 0 0 3 0x14200 usbatsk usbatsk
98064 318614 0 0 2 0x14200 sensors
49963 220000 0 0 3 0x40014200 acpi0 acpi0
66040 163919 0 0 3 0x40014200 idle1
36632 386505 0 0 2 0x14200 softnet
73380 151363 0 0 2 0x14200 systqmp
28485 26161 0 0 2 0x14200 systq
77840 491220 0 0 2 0x40014200 softclock
383 63150 0 0 3 0x40014200 idle0
56474 514734 0 0 3 0x14200 kmalloc kmthread
1 392229 0 0 3 0x82 wait init
0 0 -1 0 2 0x10200 swapper
ddb{0}> show register
ds 0x10
es 0x10
fs 0x20
gs 0
edi 0xd577d000 end+0x4980000
esi 0xd57810b0 end+0x49840b0
ebp 0xf58be894
ebx 0xd04af8f9 i386_bus_space_io_read_multi_4+0x19
edx 0x3f8
ecx 0x8000000 __kernel_end_phys+0x7203000
eax 0xd04af800 ami_refresh_sensors+0xe0
eip 0xd02c7054 db_enter+0x4
cs 0x50
eflags 0x202
esp 0xf58be894
ss 0x10
db_enter+0x4: popl %ebp
When I tried to examine the other CPU, ddb locked up.
ddb{0}> machine ddbcpu 1
bluhm
