uvm_fault(0xffffffff83a0a7b0, 0xffff800029ee6000, 0, 2) -> e
kernel: page fault trap, code=2
Stopped at kcov_remote_enter+0x122: movq $0,0(%rcx)
TID PID UID PRFLAGS PFLAGS CPU COMMAND
kcov_remote_enter(0,ffff80002a79d690) at kcov_remote_enter+0x122 sys/dev/kcov.c:670
timeout_run(ffffffff8399e2b0,ffff80002a7660a8) at timeout_run+0xdf sys/kern/kern_timeout.c:696
softclock_process_tick_timeout(ffff80002a7660a8,0) at softclock_process_tick_timeout+0x230 sys/kern/kern_timeout.c:756
softclock(0) at softclock+0x152 sys/kern/kern_timeout.c:788
softintr_dispatch(0) at softintr_dispatch+0xf9 sys/kern/kern_softintr.c:87
dosoftint(0) at dosoftint+0x48 sys/arch/amd64/amd64/intr.c:862
Xsoftclock() at Xsoftclock+0x27
uvm_anfree(fffff1006a765ae0) at uvm_anfree+0xe9 sys/uvm/uvm_anon.c:112
amap_wipeout(fffff1006ca9e1c8) at amap_wipeout+0x246 sys/uvm/uvm_amap.c:-1
uvm_unmap_detach(ffff8000300af910,0) at uvm_unmap_detach+0x8a sys/uvm/uvm_map.c:1359
uvm_map_teardown(fffff1007b4d7b88) at uvm_map_teardown+0x357 sys/uvm/uvm_map.c:2536
exit1(ffff8000314bcd18,0,0,1) at exit1+0x6e6 sys/kern/kern_exit.c:259
sys_exit(ffff8000314bcd18,ffff8000300afad0,ffff8000300afa20) at sys_exit+0x1a sys/kern/kern_exit.c:-1
syscall(ffff8000300afad0) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline]
syscall(ffff8000300afad0) at syscall+0x962 sys/arch/amd64/amd64/trap.c:783
end trace frame: 0xffff8000300afb50, count: 0
https://www.openbsd.org/ddb.html describes the minimum info required in bug
reports. Insufficient info makes it difficult to find and fix bugs.
ddb>
ddb> set $lines = 0
ddb> set $maxwidth = 0
ddb> show panic
*cpu0: uvm_fault(0xffffffff83a0a7b0, 0xffff800029ee6000, 0, 2) -> e
ddb> trace
kcov_remote_enter(0,ffff80002a79d690) at kcov_remote_enter+0x122 sys/dev/kcov.c:670
timeout_run(ffffffff8399e2b0,ffff80002a7660a8) at timeout_run+0xdf sys/kern/kern_timeout.c:696
softclock_process_tick_timeout(ffff80002a7660a8,0) at softclock_process_tick_timeout+0x230 sys/kern/kern_timeout.c:756
softclock(0) at softclock+0x152 sys/kern/kern_timeout.c:788
softintr_dispatch(0) at softintr_dispatch+0xf9 sys/kern/kern_softintr.c:87
dosoftint(0) at dosoftint+0x48 sys/arch/amd64/amd64/intr.c:862
Xsoftclock() at Xsoftclock+0x27
uvm_anfree(fffff1006a765ae0) at uvm_anfree+0xe9 sys/uvm/uvm_anon.c:112
amap_wipeout(fffff1006ca9e1c8) at amap_wipeout+0x246 sys/uvm/uvm_amap.c:-1
uvm_unmap_detach(ffff8000300af910,0) at uvm_unmap_detach+0x8a sys/uvm/uvm_map.c:1359
uvm_map_teardown(fffff1007b4d7b88) at uvm_map_teardown+0x357 sys/uvm/uvm_map.c:2536
exit1(ffff8000314bcd18,0,0,1) at exit1+0x6e6 sys/kern/kern_exit.c:259
sys_exit(ffff8000314bcd18,ffff8000300afad0,ffff8000300afa20) at sys_exit+0x1a sys/kern/kern_exit.c:-1
syscall(ffff8000300afad0) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline]
syscall(ffff8000300afad0) at syscall+0x962 sys/arch/amd64/amd64/trap.c:783
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x70168bb460f0, count: -15
ddb> show registers
rdi 0xffffffff
rsi 0xffff800000c16c00
rbp 0xffff8000300af620
rbx 0xffff80002a79d690
rdx 0xffff8000314bcd18
rcx 0xffff800029ee6000
rax 0xfffff1006caa8f00
r8 0
r9 0
r10 0x72df43fe0c6fbff4
r11 0x5085b0439fdb767c
r12 0xffffffff83178f60 endtsleep
r13 0xffff80002a766010
r14 0xffff80002a79d690
r15 0
rip 0xffffffff8305cb92 kcov_remote_enter+0x122
cs 0x8
rflags 0x10297 __ALIGN_SIZE+0xf297
rsp 0xffff8000300af600
ss 0x10
kcov_remote_enter+0x122: movq $0,0(%rcx)
ddb> show proc
PROC (syz-executor) tid=320631 pid=47063 tcnt=0 stat=onproc
flags process=1008<EXITING,SINGLEEXIT> proc=2000<WEXIT>
runpri=32, usrpri=56, slppri=32, nice=20
wchan=0x0, wmesg=, ps_single=0xffff8000314bcd18 scnt=-1 ecnt=1
forw=0xffffffffffffffff, list=0xffff80002a736008,0xffff8000314bdcb8
process=0xffff8000314ba418 user=0xffff8000300aa000, vmspace=0xfffff1007b4d7b88
estcpu=6, cpticks=8, pctcpu=0.3, user=0, sys=3, intr=1
ddb> ps
PID TID PPID UID S FLAGS WAIT COMMAND
52415 218658 35182 0 2 0 syz-executor
52415 298964 35182 0 3 0x4000080 fsleep syz-executor
52415 246594 35182 0 3 0x4000080 fsleep syz-executor
81844 14788 42834 0 2 0 syz-executor
81844 204736 42834 0 2 0x4000000 syz-executor
81844 343647 42834 0 3 0x4000080 fsleep syz-executor
80789 283631 89713 0 3 0x80 nanoslp syz-executor
80789 386400 89713 0 3 0x4000080 fsleep syz-executor
80789 488483 89713 0 3 0x4000080 pipewr syz-executor
38160 56809 83068 0 2 0 syz-executor
38160 447114 83068 0 3 0x4000080 fsleep syz-executor
84586 112063 45875 0 2 0x10 syz-executor
84586 404387 45875 0 3 0x4000011 inode syz-executor
90635 33215 1 0 3 0x82 nanoslp getty
92769 140457 7315 0 3 0x10000003 inode syz-executor
16557 71159 7315 0 3 0x82 nanoslp syz-executor
42834 401606 7315 0 3 0x3 inode syz-executor
83068 209368 7315 0 2 0x3 syz-executor
89713 362532 7315 0 3 0x82 nanoslp syz-executor
50752 12303 7315 0 2 0x2 syz-executor
45875 295855 7315 0 3 0x3 inode syz-executor
35182 165750 7315 0 3 0x82 nanoslp syz-executor
7315 355209 43118 0 3 0x82 kqread syz-executor
43118 343242 72620 0 3 0x10008a sigsusp ksh
72620 246570 86171 0 3 0x98 kqread sshd-session
86171 192588 61881 0 3 0x92 kqread sshd-session
61881 23469 1 0 3 0x88 kqread sshd
30191 363080 54751 73 3 0x1100090 kqread syslogd
54751 197028 1 0 3 0x100082 sbwait syslogd
4793 322721 1 0 3 0x100080 kqread resolvd
6103 147509 82932 77 3 0x100092 kqread dhcpleased
33853 55100 82932 77 3 0x100092 kqread dhcpleased
82932 196877 1 0 3 0x80 kqread dhcpleased
32226 370392 0 0 3 0x14200 bored smr
10559 89178 0 0 2 0x14200 zerothread
8298 105391 0 0 3 0x14200 aiodoned aiodoned
70374 124994 0 0 3 0x14200 syncer update
95412 192912 0 0 3 0x14200 cleaner cleaner
87688 177026 0 0 3 0x14200 reaper reaper
93226 424769 0 0 3 0x14200 pgdaemon pagedaemon
3597 345846 0 0 3 0x14200 bored viomb
27067 490976 0 0 3 0x40014200 acpi0 acpi0
70581 434998 0 0 3 0x14200 bored softnet0
47176 95574 0 0 3 0x14200 bored systqmp
3522 20461 0 0 3 0x14200 bored systq
4418 410381 0 0 3 0x40014200 tmoslp softclock
16284 372227 0 0 3 0x40014200 idle0
1 135688 0 0 3 0x82 wait init
0 0 -1 0 3 0x10200 scheduler swapper
ddb> show all locks
No such command
ddb> show malloc
Type InUse MemUse HighUse Limit Requests Type Lim
devbuf 11031 12103K 12233K 166960K 12165 0
pcb 17 12K 12K 166960K 25 0
rtable 231 6K 6K 166960K 369 0
pf 30 12K 14K 166960K 33 0
ifaddr 41 7K 7K 166960K 46 0
ifgroup 50 2K 2K 166960K 52 0
sysctl 3 1K 9K 166960K 7 0
counters 33 17K 17K 166960K 34 0
ioctlops 0 0K 4K 166960K 36 0
iov 0 0K 2K 166960K 3 0
mount 1 1K 1K 166960K 1 0
log 0 0K 0K 166960K 4 0
vnodes 1294 81K 82K 166960K 1389 0
UFS quota 1 32K 32K 166960K 1 0
UFS mount 5 36K 36K 166960K 5 0
shm 2 1K 5K 166960K 3 0
VM map 2 1K 1K 166960K 2 0
sem 4 0K 0K 166960K 4 0
dirhash 12 2K 2K 166960K 12 0
ACPI 1692 195K 286K 166960K 12470 0
file desc 16 57K 85K 166960K 181 0
sigio 0 0K 0K 166960K 1 0
proc 60 59K 83K 166960K 508 0
subproc 72 4K 4K 166960K 72 0
NFS srvsock 1 0K 0K 166960K 1 0
NFS daemon 1 16K 16K 166960K 1 0
ip_moptions 0 0K 0K 166960K 8 0
in_multi 95 7K 7K 166960K 115 0
ether_multi 1 0K 0K 166960K 3 0
mrt 0 0K 0K 166960K 3 0
ISOFS mount 1 32K 32K 166960K 1 0
MSDOSFS mount 1 16K 16K 166960K 1 0
ttys 55 254K 254K 166960K 55 0
exec 0 0K 1K 166960K 369 0
fusefs mount 1 32K 32K 166960K 1 0
pfkey data 0 0K 0K 166960K 1 0
tdb 3 0K 0K 166960K 3 0
VM swap 8 62K 64K 166960K 10 0
UVM amap 210 154K 159K 166960K 3406 0
UVM aobj 5 2K 2K 166960K 5 0
pinsyscall 37 74K 90K 166960K 1285 0
memdesc 1 4K 4K 166960K 1 0
crypto data 1 1K 1K 166960K 1 0
NDP 12 0K 2K 166960K 29 0
temp 41 9106K 9122K 166960K 5272 0
kqueue 13 20K 24K 166960K 37 0
SYN cache 2 16K 16K 166960K 2 0
ddb> show all pools
Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle
rtpcb 120 41 0 38 1 0 1 1 0 8 0
rtentry 136 118 0 11 4 0 4 4 0 8 0
unpcb 144 60 0 43 1 0 1 1 0 8 0
syncache 336 4 0 4 1 1 0 1 0 8 0
tcpcb 736 25 0 20 1 0 1 1 0 8 0
arp 96 19 0 1 1 0 1 1 0 8 0
ipq 40 1 0 0 1 0 1 1 0 8 0
ipqe 40 2 0 0 1 0 1 1 0 8 0
inpcb 328 91 0 82 2 0 2 2 0 8 1
nd6 112 26 0 3 1 0 1 1 0 8 0
pkpcb 40 1 0 1 1 0 1 1 0 8 1
kcovpl 48 8 0 0 1 0 1 1 0 8 0
ppxss 1072 1 0 1 1 1 0 1 0 8 0
art_heap8 4096 1 0 0 1 0 1 1 0 8 0
art_heap4 256 492 0 42 31 2 29 31 0 8 0
art_table 40 493 0 42 5 0 5 5 0 8 0
art_node 32 118 0 21 1 0 1 1 0 8 0
semapl 72 2 0 0 1 0 1 1 0 8 0
shmpl 112 2 0 0 1 0 1 1 0 8 0
dirhash 1024 17 0 0 3 0 3 3 0 8 0
dino2pl 256 1649 0 184 92 0 92 92 0 8 0
ffsino 256 1649 0 184 92 0 92 92 0 8 0
nchpl 144 1899 0 203 64 0 64 64 0 8 0
vnodes 216 1750 0 0 98 0 98 98 0 8 0
namei 1024 5584 0 5584 2 1 1 1 0 8 1
kstatmem 264 25 0 2 2 0 2 2 0 8 0
scxspl 216 10366 0 10366 3 2 1 3 1 8 1
plimitpl 152 33 0 16 1 0 1 1 0 8 0
sigapl 424 477 0 434 6 1 5 6 0 8 0
knotepl 120 3844 0 3797 9 7 2 9 0 8 0
kqueuepl 184 38 0 28 1 0 1 1 0 8 0
pipepl 304 130 0 102 3 0 3 3 0 8 0
fdescpl 448 464 0 436 4 0 4 4 0 8 0
filepl 120 1665 0 1449 8 1 7 8 0 8 0
lockfpl 104 23 0 21 1 0 1 1 0 8 0
lockfspl 48 11 0 9 1 0 1 1 0 8 0
sessionpl 144 24 0 17 1 0 1 1 0 8 0
pgrppl 48 32 0 17 1 0 1 1 0 8 0
ucredpl 104 118 0 106 1 0 1 1 0 8 0
zombiepl 144 439 0 437 1 0 1 1 0 8 0
processpl 1152 477 0 434 4 0 4 4 0 8 0
procpl 664 548 0 497 5 0 5 5 0 8 0
sockpl 552 193 0 164 3 0 3 3 0 8 0
mcl64k 65536 7 0 7 1 1 0 1 0 8 0
mcl16k 16384 2 0 2 1 1 0 1 0 8 0
mcl8k 8192 4 0 4 1 1 0 1 0 8 0
mcl4k 4096 2529 0 2475 14 6 8 14 0 8 0
mcl2k 2048 176 0 173 3 0 3 3 0 8 2
mtagpl 96 4 0 4 1 1 0 1 0 8 0
mbufpl 256 4620 0 4451 14 0 14 14 0 8 1
bufpl 280 6274 0 102 441 0 441 441 0 8 0
anonpl 24 105822 0 101753 62 10 52 61 0 186 13
amapchunkpl 152 9598 0 9102 28 4 24 28 0 158 0
amappl16 200 2263 0 2192 21 6 15 20 0 8 7
amappl15 192 3 0 3 1 1 0 1 0 8 0
amappl14 184 411 0 410 1 0 1 1 0 8 0
amappl13 176 119 0 109 1 0 1 1 0 8 0
amappl12 168 719 0 693 2 0 2 2 0 8 0
amappl11 160 3 0 3 1 1 0 1 0 8 0
amappl10 152 57 0 47 1 0 1 1 0 8 0
amappl9 144 280 0 280 1 1 0 1 0 8 0
amappl8 136 96 0 95 1 0 1 1 0 8 0
amappl7 128 143 0 132 1 0 1 1 0 8 0
amappl6 120 149 0 147 1 0 1 1 0 8 0
amappl5 112 88 0 81 1 0 1 1 0 8 0
amappl4 104 266 0 249 1 0 1 1 0 8 0
amappl3 96 1670 0 1571 3 0 3 3 0 8 0
amappl2 88 523 0 469 2 0 2 2 0 8 0
amappl1 80 10256 0 9716 13 1 12 13 0 8 0
amappl 88 2711 0 2564 4 0 4 4 0 92 0
uvmvnodes 80 98 0 0 2 0 2 2 0 8 0
dma4096 4096 1 0 1 1 1 0 1 0 8 0
dma1024 1024 1 0 0 1 0 1 1 0 8 0
dma256 256 6 0 6 1 1 0 1 0 8 0
dma128 128 253 0 253 1 1 0 1 0 8 0
dma64 64 6 0 6 1 1 0 1 0 8 0
dma32 32 7 0 7 1 1 0 1 0 8 0
dma16 16 18 0 17 1 0 1 1 0 8 0
aobjpl 72 4 0 0 1 0 1 1 0 8 0
uaddrrnd 24 464 0 436 1 0 1 1 0 8 0
uaddrbest 32 2 0 0 1 0 1 1 0 8 0
uaddr 24 464 0 436 1 0 1 1 0 8 0
vmmpekpl 168 5718 0 5684 2 0 2 2 0 8 0
vmmpepl 168 39303 0 37564 95 2 93 95 0 357 6
vmsppl 368 463 0 435 4 1 3 4 0 8 0
rwobjpl 40 15072 0 14095 14 0 14 14 0 8 1
pdppl 4096 934 0 870 92 26 66 76 0 8 2
pvpl 32 241681 0 233352 146 12 134 146 0 265 39
pmappl 216 463 0 435 2 0 2 2 0 8 0
extentpl 40 45 0 27 1 0 1 1 0 8 0
phpool 112 360 0 42 10 0 10 10 0 8 0
ddb> machine ddbcpu 0
No such command
ddb> trace
kcov_remote_enter(0,ffff80002a79d690) at kcov_remote_enter+0x122 sys/dev/kcov.c:670
timeout_run(ffffffff8399e2b0,ffff80002a7660a8) at timeout_run+0xdf sys/kern/kern_timeout.c:696
softclock_process_tick_timeout(ffff80002a7660a8,0) at softclock_process_tick_timeout+0x230 sys/kern/kern_timeout.c:756
softclock(0) at softclock+0x152 sys/kern/kern_timeout.c:788
softintr_dispatch(0) at softintr_dispatch+0xf9 sys/kern/kern_softintr.c:87
dosoftint(0) at dosoftint+0x48 sys/arch/amd64/amd64/intr.c:862
Xsoftclock() at Xsoftclock+0x27
uvm_anfree(fffff1006a765ae0) at uvm_anfree+0xe9 sys/uvm/uvm_anon.c:112
amap_wipeout(fffff1006ca9e1c8) at amap_wipeout+0x246 sys/uvm/uvm_amap.c:-1
uvm_unmap_detach(ffff8000300af910,0) at uvm_unmap_detach+0x8a sys/uvm/uvm_map.c:1359
uvm_map_teardown(fffff1007b4d7b88) at uvm_map_teardown+0x357 sys/uvm/uvm_map.c:2536
exit1(ffff8000314bcd18,0,0,1) at exit1+0x6e6 sys/kern/kern_exit.c:259
sys_exit(ffff8000314bcd18,ffff8000300afad0,ffff8000300afa20) at sys_exit+0x1a sys/kern/kern_exit.c:-1
syscall(ffff8000300afad0) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline]
syscall(ffff8000300afad0) at syscall+0x962 sys/arch/amd64/amd64/trap.c:783
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x70168bb460f0, count: -15
ddb> machine ddbcpu 1
No such command
ddb> trace
kcov_remote_enter(0,ffff80002a79d690) at kcov_remote_enter+0x122 sys/dev/kcov.c:670
timeout_run(ffffffff8399e2b0,ffff80002a7660a8) at timeout_run+0xdf sys/kern/kern_timeout.c:696
softclock_process_tick_timeout(ffff80002a7660a8,0) at softclock_process_tick_timeout+0x230 sys/kern/kern_timeout.c:756
softclock(0) at softclock+0x152 sys/kern/kern_timeout.c:788
softintr_dispatch(0) at softintr_dispatch+0xf9 sys/kern/kern_softintr.c:87
dosoftint(0) at dosoftint+0x48 sys/arch/amd64/amd64/intr.c:862
Xsoftclock() at Xsoftclock+0x27
uvm_anfree(fffff1006a765ae0) at uvm_anfree+0xe9 sys/uvm/uvm_anon.c:112
amap_wipeout(fffff1006ca9e1c8) at amap_wipeout+0x246 sys/uvm/uvm_amap.c:-1
uvm_unmap_detach(ffff8000300af910,0) at uvm_unmap_detach+0x8a sys/uvm/uvm_map.c:1359
uvm_map_teardown(fffff1007b4d7b88) at uvm_map_teardown+0x357 sys/uvm/uvm_map.c:2536
exit1(ffff8000314bcd18,0,0,1) at exit1+0x6e6 sys/kern/kern_exit.c:259
sys_exit(ffff8000314bcd18,ffff8000300afad0,ffff8000300afa20) at sys_exit+0x1a sys/kern/kern_exit.c:-1
syscall(ffff8000300afad0) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline]
syscall(ffff8000300afad0) at syscall+0x962 sys/arch/amd64/amd64/trap.c:783
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x70168bb460f0, count: -15
ddb> uvm_fault(0xffffffff83a0a7b0, 0xffff800029ee4000, 0, 2) -> e
kernel: page fault trap, code=2
Faulted in DDB; continuing...