uvm_fault(0xffffffff839795b0, 0xffff80002ec68fb8, 0, 1) -> e
kernel: page fault trap, code=0
Stopped at mtx_enter_try+0x7b: movl 0x8(%r14),%r15d
TID PID UID PRFLAGS PFLAGS CPU COMMAND
290263 84773 0 0x14000 0x200 1 reaper
mtx_enter_try(ffff80002ec68fb0) at mtx_enter_try+0x7b sys/kern/kern_lock.c:290
mtx_enter(ffff80002ec68fb0) at mtx_enter+0x62 sys/kern/kern_lock.c:261
filt_procdetach(fffffd8062a40ca8) at filt_procdetach+0x4d sys/kern/kern_event.c:432
knote_remove(ffff8000fffe8a80,fffffd806ef44e00,fffffd806ef44ea0,1,1) at knote_remove+0x2db sys/kern/kern_event.c:-1
kqueue_purge(ffff8000fffe8a80,fffffd806ef44e00) at kqueue_purge+0x137 sys/kern/kern_event.c:1890
kqueue_close(fffffd8060c5f1a8,ffff8000fffe8a80) at kqueue_close+0x48 sys/kern/kern_event.c:1934
fdrop(fffffd8060c5f1a8,ffff8000fffe8a80) at fdrop+0x121 sys/kern/kern_descrip.c:1280
closef(fffffd8060c5f1a8,ffff8000fffe8a80) at closef+0x192 sys/kern/kern_descrip.c:1264
fdfree(ffff8000fffe8a80) at fdfree+0x116 sys/kern/kern_descrip.c:1195
exit1(ffff8000fffe8a80,0,0,1) at exit1+0x576 sys/kern/kern_exit.c:215
sys_exit(ffff8000fffe8a80,ffff80003a00a470,ffff80003a00a3c0) at sys_exit+0x1a sys/kern/kern_exit.c:-1
syscall(ffff80003a00a470) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline]
syscall(ffff80003a00a470) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:748
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x76b7ca490cd0, count: 2
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{0}>
ddb{0}> set $lines = 0
ddb{0}> set $maxwidth = 0
ddb{0}> show panic
*cpu0: uvm_fault(0xffffffff839795b0, 0xffff80002ec68fb8, 0, 1) -> e
ddb{0}> trace
mtx_enter_try(ffff80002ec68fb0) at mtx_enter_try+0x7b sys/kern/kern_lock.c:290
mtx_enter(ffff80002ec68fb0) at mtx_enter+0x62 sys/kern/kern_lock.c:261
filt_procdetach(fffffd8062a40ca8) at filt_procdetach+0x4d sys/kern/kern_event.c:432
knote_remove(ffff8000fffe8a80,fffffd806ef44e00,fffffd806ef44ea0,1,1) at knote_remove+0x2db sys/kern/kern_event.c:-1
kqueue_purge(ffff8000fffe8a80,fffffd806ef44e00) at kqueue_purge+0x137 sys/kern/kern_event.c:1890
kqueue_close(fffffd8060c5f1a8,ffff8000fffe8a80) at kqueue_close+0x48 sys/kern/kern_event.c:1934
fdrop(fffffd8060c5f1a8,ffff8000fffe8a80) at fdrop+0x121 sys/kern/kern_descrip.c:1280
closef(fffffd8060c5f1a8,ffff8000fffe8a80) at closef+0x192 sys/kern/kern_descrip.c:1264
fdfree(ffff8000fffe8a80) at fdfree+0x116 sys/kern/kern_descrip.c:1195
exit1(ffff8000fffe8a80,0,0,1) at exit1+0x576 sys/kern/kern_exit.c:215
sys_exit(ffff8000fffe8a80,ffff80003a00a470,ffff80003a00a3c0) at sys_exit+0x1a sys/kern/kern_exit.c:-1
syscall(ffff80003a00a470) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline]
syscall(ffff80003a00a470) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:748
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x76b7ca490cd0, count: -13
ddb{0}> show registers
rdi 0
rsi 0
rbp 0xffff80003a00a020
rbx 0xfffffd8062a40c00
rdx 0
rcx 0xffff8000fffe8a80
rax 0xffffffff837d9f00 cpu_info_full_primary+0x1f00
r8 0x1
r9 0x1
r10 0xdddeabf123210657
r11 0xa94ddd3b533a4816
r12 0xffffffff83510bb8 proc_filtops
r13 0xffffffff837d9ff0 cpu_info_full_primary+0x1ff0
r14 0xffff80002ec68fb0
r15 0
rip 0xffffffff815a952b mtx_enter_try+0x7b
cs 0x8
rflags 0x10297 __ALIGN_SIZE+0xf297
rsp 0xffff80003a009fe0
ss 0x10
mtx_enter_try+0x7b: movl 0x8(%r14),%r15d
ddb{0}> show proc
PROC (syz-executor) tid=103258 pid=28806 tcnt=0 stat=onproc
flags process=1008<EXITING,SINGLEEXIT> proc=2000<WEXIT>
runpri=32, usrpri=72, slppri=32, nice=20
wchan=0x0, wmesg=, ps_single=0xffff8000fffe8a80 scnt=-1 ecnt=1
forw=0xffffffffffffffff, list=0xffff80003c418fb8,0xffffffff83979770
process=0xffff8000fffe6b70 user=0xffff80003a005000, vmspace=0xfffffd8064c9e028
estcpu=22, cpticks=4, pctcpu=0.1, user=0, sys=1, intr=0
ddb{0}> ps
PID TID PPID UID S FLAGS WAIT COMMAND
22927 278399 69230 0 3 0x82 nanoslp syz-executor
18868 2042 69230 0 3 0x82 nanoslp syz-executor
91050 47155 0 0 3 0x14200 bored sosplice
81401 343235 69230 0 3 0x82 nanoslp syz-executor
69230 85198 75772 0 3 0x82 wait syz-executor
75772 188760 97333 0 3 0x10008a sigsusp ksh
97333 267345 8729 0 3 0x98 kqread sshd-session
8729 279731 50991 0 3 0x92 kqread sshd-session
55872 102932 1 0 3 0x100083 ttyopn getty
50991 82124 1 0 3 0x88 kqread sshd
3533 123625 82267 74 3 0x1100092 bpf pflogd
82267 157579 1 0 3 0x80 sbwait pflogd
33826 505421 75851 73 3 0x1100090 kqread syslogd
75851 229183 1 0 3 0x100082 sbwait syslogd
73203 406688 1 0 3 0x100080 kqread resolvd
72598 451134 14207 77 3 0x100092 kqread dhcpleased
27159 318063 14207 77 3 0x100092 kqread dhcpleased
14207 186214 1 0 3 0x80 kqread dhcpleased
53906 477957 0 0 3 0x14200 bored smr
54659 34580 0 0 3 0x14200 pgzero zerothread
90172 114122 0 0 3 0x14200 aiodoned aiodoned
74287 18768 0 0 3 0x14200 syncer update
83109 189411 0 0 3 0x14200 cleaner cleaner
84773 290263 0 0 7 0x14200 reaper
78807 253801 0 0 3 0x14200 pgdaemon pagedaemon
11230 298541 0 0 3 0x14200 bored viomb
50962 12050 0 0 3 0x40014200 acpi0 acpi0
21356 248341 0 0 3 0x40014200 idle1
80871 487054 0 0 3 0x14200 bored softnet1
79344 372637 0 0 3 0x14200 bored softnet0
28684 436076 0 0 3 0x14200 smrbar systqmp
40626 282159 0 0 3 0x14200 bored systq
31329 37179 0 0 3 0x14200 tmoslp softclockmp
48104 289507 0 0 3 0x40014200 tmoslp softclock
87706 432900 0 0 3 0x40014200 idle0
1 22537 0 0 3 0x82 wait init
0 0 -1 0 3 0x10010200 scheduler swapper
ddb{0}> show all locks
Process 28684 (systqmp) thread 0xffff8000ffffe530 (436076)
ddb{0}> show malloc
Type InUse MemUse HighUse Limit Requests Type Lim
devbuf 10230 11032K 11148K 166960K 11748 0
pcb 17 14K 16K 166960K 326 0
rtable 174 7K 9K 166960K 549 0
pf 34 17K 81K 166960K 135 0
ifaddr 33 5K 8K 166960K 90 0
ifgroup 51 2K 2K 166960K 132 0
sysctl 3 1K 9K 166960K 10 0
counters 66 36K 37K 166960K 146 0
ioctlops 0 0K 4K 166960K 1666 0
iov 0 0K 24K 166960K 38 0
mount 1 1K 1K 166960K 1 0
log 0 0K 0K 166960K 4 0
vnodes 1337 84K 85K 166960K 1809 0
UFS quota 1 32K 32K 166960K 1 0
UFS mount 5 36K 36K 166960K 5 0
shm 2 1K 5K 166960K 14 0
VM map 2 1K 1K 166960K 2 0
sem 12 1K 1K 166960K 165 0
dirhash 12 2K 2K 166960K 27 0
ACPI 1692 195K 286K 166960K 12470 0
file desc 13 45K 236K 166960K 807 0
sigio 0 0K 0K 166960K 13 0
proc 72 115K 196K 166960K 622 0
subproc 72 4K 4K 166960K 91 0
NFS srvsock 1 0K 0K 166960K 1 0
NFS daemon 1 16K 16K 166960K 1 0
ip_moptions 0 0K 0K 166960K 71 0
in_multi 66 4K 7K 166960K 146 0
ether_multi 1 0K 0K 166960K 2 0
mrt 0 0K 0K 166960K 6 0
ISOFS mount 1 32K 32K 166960K 1 0
MSDOSFS mount 1 16K 16K 166960K 1 0
ttys 253 1129K 1129K 166960K 253 0
exec 0 0K 1K 166960K 491 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 214 166K 181K 166960K 8891 0
UVM aobj 20 2K 2K 166960K 22 0
pinsyscall 38 76K 104K 166960K 2000 0
memdesc 1 4K 4K 166960K 1 0
crypto data 1 1K 1K 166960K 1 0
ip6_options 0 0K 0K 166960K 29 0
NDP 11 0K 1K 166960K 60 0
temp 45 8648K 8774K 166960K 25386 0
kqueue 15 22K 28K 166960K 145 0
SYN cache 2 16K 16K 166960K 2 0
ddb{0}> show all pools
Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle
plcache 128 26 0 0 1 0 1 1 0 8 0
rtpcb 120 87 0 84 1 0 1 1 0 8 0
rtentry 176 153 0 84 6 0 6 6 0 8 0
unpcb 144 657 0 640 9 5 4 6 0 8 3
syncache 336 4 0 4 2 1 1 1 0 8 1
tcpcb 736 144 0 140 2 1 1 2 0 8 0
arp 136 25 0 11 1 0 1 1 0 8 0
inpcb 328 869 0 862 12 5 7 7 0 8 6
nd6 152 33 0 17 2 0 2 2 0 8 0
pkpcb 40 8 0 8 2 1 1 1 0 8 1
kcovpl 48 10 0 2 1 0 1 1 0 8 0
mppekey 1024 2 0 2 1 0 1 1 0 8 1
ppxss 1192 30 0 30 2 1 1 1 0 8 1
pppxif 1504 5 0 5 2 1 1 1 0 8 1
pffrag 232 7 0 4 1 0 1 1 0 482 0
pffrnode 88 7 0 4 1 0 1 1 0 8 0
pffrent 40 13 0 10 1 0 1 1 0 8 0
pfosfp 40 1429 0 1005 5 0 5 5 0 8 0
pfosfpen 112 1429 0 714 21 0 21 21 0 8 0
pfrktable 1344 2 0 2 2 2 0 1 0 8 0
pfanchor 1288 3 0 0 1 0 1 1 0 8 0
pfstitem 24 69 0 1 1 0 1 1 0 8 0
pfstkey 128 75 0 7 3 0 3 3 0 8 0
pfstate 384 71 0 4 7 0 7 7 0 8 0
pfrule 1344 25 0 19 2 0 2 2 0 8 0
rttmr 136 2 0 2 1 1 0 1 0 8 0
art_heap8 4096 1 0 0 1 0 1 1 0 8 0
art_heap4 256 675 0 333 31 1 30 31 0 8 7
art_table 40 676 0 333 5 0 5 5 0 8 0
art_node 32 152 0 80 1 0 1 1 0 8 0
sysvmsgpl 40 6 0 3 2 1 1 1 0 8 0
semupl 112 1 0 1 1 1 0 1 0 8 0
semapl 112 162 0 152 1 0 1 1 0 8 0
shmpl 112 19 0 2 1 0 1 1 0 8 0
dirhash 1024 27 0 10 3 0 3 3 0 8 0
dino2pl 256 2819 0 1310 96 0 96 96 0 8 0
ffsino 296 2821 0 1312 118 0 118 118 0 8 0
nchpl 144 3850 0 2141 64 0 64 64 0 8 0
rtmask 32 4 0 4 1 0 1 1 0 8 1
vnodes 216 3073 0 0 171 0 171 171 0 8 0
namei 1024 13058 0 13058 3 2 1 2 0 8 1
percpumem 16 88 0 40 1 0 1 1 0 8 0
kstatmem 264 82 0 56 3 0 3 3 0 8 1
acpiwqpl 32 1 0 1 1 0 1 1 1 8 1
scsiplug 72 4 0 4 2 1 1 1 0 8 1
scxspl 216 18108 0 18108 11 9 2 8 1 8 2
plimitpl 152 297 0 278 1 0 1 1 0 8 0
sigapl 424 1388 0 1344 35 6 29 35 0 8 22
knotepl 120 322 0 0 10 0 10 10 0 8 0
kqueuepl 224 254 0 244 3 1 2 3 0 8 1
pipepl 344 206 0 179 6 3 3 6 0 8 0
fdescpl 528 1091 0 1064 3 0 3 3 0 8 0
filepl 160 6410 0 6204 20 4 16 16 0 8 4
lockfpl 104 287 0 285 1 0 1 1 0 8 0
lockfspl 48 97 0 95 1 0 1 1 0 8 0
sessionpl 144 24 0 15 1 0 1 1 0 8 0
pgrppl 48 47 0 30 1 0 1 1 0 8 0
ucredpl 104 1039 0 1026 1 0 1 1 0 8 0
zombiepl 144 1352 0 1344 2 1 1 1 0 8 0
processpl 1232 1388 0 1344 24 3 21 24 0 8 15
procpl 664 2464 0 2420 27 7 20 27 0 8 13
sosppl 168 3 0 3 1 0 1 1 0 8 1
sockpl 752 1648 0 1621 31 20 11 17 0 8 8
mcl64k 65536 3 0 0 1 0 1 1 0 8 0
mcl8k 8192 3 0 0 1 0 1 1 0 8 0
mcl4k 4096 112 0 0 14 0 14 14 0 8 0
mcl2k 2048 42 0 0 6 0 6 6 0 8 0
mtagpl 96 3 0 0 1 0 1 1 0 8 0
mbufpl 256 180 0 0 12 0 12 12 0 8 0
bufpl 280 6717 0 580 439 0 439 439 0 8 0
anonpl 32 7564 0 0 62 1 61 61 0 246 0
amapchunkpl 152 29510 0 29120 34 6 28 29 0 158 5
amappl16 200 3765 0 3708 21 6 15 15 0 8 6
amappl15 192 1 0 1 1 1 0 1 0 8 0
amappl14 184 12 0 11 1 0 1 1 0 8 0
amappl13 176 455 0 454 1 0 1 1 0 8 0
amappl12 168 1484 0 1446 3 0 3 3 0 8 0
amappl11 160 4 0 4 1 1 0 1 0 8 0
amappl10 152 54 0 40 1 0 1 1 0 8 0
amappl9 144 248 0 248 1 1 0 1 0 8 0
amappl8 136 28 0 26 1 0 1 1 0 8 0
amappl7 128 93 0 91 1 0 1 1 0 8 0
amappl6 120 304 0 291 1 0 1 1 0 8 0
amappl5 112 80 0 69 1 0 1 1 0 8 0
amappl4 104 442 0 411 1 0 1 1 0 8 0
amappl3 96 5091 0 5018 4 1 3 3 0 8 0
amappl2 88 1203 0 1129 2 0 2 2 0 8 0
amappl1 80 12070 0 11491 14 1 13 14 0 8 0
amappl 88 8005 0 7870 5 0 5 5 0 92 0
uvmvnodes 80 3073 0 0 63 0 63 63 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 7 0 7 2 1 1 1 0 8 1
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 19 0 18 1 0 1 1 0 8 0
aobjpl 72 21 0 2 1 0 1 1 0 8 0
uaddrrnd 24 1091 0 1064 1 0 1 1 0 8 0
uaddrbest 32 2 0 0 1 0 1 1 0 8 0
uaddr 24 1091 0 1064 1 0 1 1 0 8 0
vmmpekpl 168 10697 0 10632 6 0 6 6 0 8 0
vmmpepl 168 75340 0 73600 106 8 98 98 0 357 10
vmsppl 488 1090 0 1064 6 1 5 5 0 8 0
rwobjpl 80 25416 0 21393 84 0 84 84 0 8 0
pdppl 4096 2190 0 2128 106 34 72 86 0 8 10
pvpl 32 14514 0 0 118 0 118 118 0 265 0
pmappl 256 1090 0 1064 3 0 3 3 0 8 0
extentpl 40 45 0 27 1 0 1 1 0 8 0
phpool 112 286 0 41 8 0 8 8 0 8 0
ddb{0}> machine ddbcpu 0
Invalid cpu 0
ddb{0}> trace
mtx_enter_try(ffff80002ec68fb0) at mtx_enter_try+0x7b sys/kern/kern_lock.c:290
mtx_enter(ffff80002ec68fb0) at mtx_enter+0x62 sys/kern/kern_lock.c:261
filt_procdetach(fffffd8062a40ca8) at filt_procdetach+0x4d sys/kern/kern_event.c:432
knote_remove(ffff8000fffe8a80,fffffd806ef44e00,fffffd806ef44ea0,1,1) at knote_remove+0x2db sys/kern/kern_event.c:-1
kqueue_purge(ffff8000fffe8a80,fffffd806ef44e00) at kqueue_purge+0x137 sys/kern/kern_event.c:1890
kqueue_close(fffffd8060c5f1a8,ffff8000fffe8a80) at kqueue_close+0x48 sys/kern/kern_event.c:1934
fdrop(fffffd8060c5f1a8,ffff8000fffe8a80) at fdrop+0x121 sys/kern/kern_descrip.c:1280
closef(fffffd8060c5f1a8,ffff8000fffe8a80) at closef+0x192 sys/kern/kern_descrip.c:1264
fdfree(ffff8000fffe8a80) at fdfree+0x116 sys/kern/kern_descrip.c:1195
exit1(ffff8000fffe8a80,0,0,1) at exit1+0x576 sys/kern/kern_exit.c:215
sys_exit(ffff8000fffe8a80,ffff80003a00a470,ffff80003a00a3c0) at sys_exit+0x1a sys/kern/kern_exit.c:-1
syscall(ffff80003a00a470) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline]
syscall(ffff80003a00a470) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:748
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x76b7ca490cd0, count: -13
ddb{0}> machine ddbcpu 1
Stopped at x86_ipi_db+0x27: addq $0x8,%rsp
x86_ipi_db(ffff8000299edff0) at x86_ipi_db+0x27 sys/arch/amd64/amd64/db_interface.c:394
x86_ipi_handler() at x86_ipi_handler+0xd9 sys/arch/amd64/amd64/ipi.c:106
Xresume_lapic_ipi() at Xresume_lapic_ipi+0x27
__mp_lock(ffffffff8389f680) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:134 [inline]
__mp_lock(ffffffff8389f680) at __mp_lock+0x192 sys/kern/kern_lock.c:165
pool_multi_free_ni(ffffffff83979800,ffff80002ee0a000) at pool_multi_free_ni+0x9a sys/kern/subr_pool.c:1708
pool_p_free(ffffffff83979800,ffff80002ee0bf90) at pool_p_free+0x1d0 sys/kern/subr_pool.c:1014
pool_put(ffffffff83979800,ffff8000fffe8fb0) at pool_put+0x309 pool_wakeup sys/kern/subr_pool.c:-1 [inline]
pool_put(ffffffff83979800,ffff8000fffe8fb0) at pool_put+0x309 sys/kern/subr_pool.c:817
reaper(ffff8000ffffd4c8) at reaper+0xc2 _atomic_dec_int sys/arch/amd64/compile/SYZKALLER/obj/machine/atomic.h:155 [inline]
reaper(ffff8000ffffd4c8) at reaper+0xc2 proc_free sys/kern/kern_exit.c:458 [inline]
reaper(ffff8000ffffd4c8) at reaper+0xc2 sys/kern/kern_exit.c:497
end trace frame: 0x0, count: 7
ddb{1}> trace
x86_ipi_db(ffff8000299edff0) at x86_ipi_db+0x27 sys/arch/amd64/amd64/db_interface.c:394
x86_ipi_handler() at x86_ipi_handler+0xd9 sys/arch/amd64/amd64/ipi.c:106
Xresume_lapic_ipi() at Xresume_lapic_ipi+0x27
__mp_lock(ffffffff8389f680) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:134 [inline]
__mp_lock(ffffffff8389f680) at __mp_lock+0x192 sys/kern/kern_lock.c:165
pool_multi_free_ni(ffffffff83979800,ffff80002ee0a000) at pool_multi_free_ni+0x9a sys/kern/subr_pool.c:1708
pool_p_free(ffffffff83979800,ffff80002ee0bf90) at pool_p_free+0x1d0 sys/kern/subr_pool.c:1014
pool_put(ffffffff83979800,ffff8000fffe8fb0) at pool_put+0x309 pool_wakeup sys/kern/subr_pool.c:-1 [inline]
pool_put(ffffffff83979800,ffff8000fffe8fb0) at pool_put+0x309 sys/kern/subr_pool.c:817
reaper(ffff8000ffffd4c8) at reaper+0xc2 _atomic_dec_int sys/arch/amd64/compile/SYZKALLER/obj/machine/atomic.h:155 [inline]
reaper(ffff8000ffffd4c8) at reaper+0xc2 proc_free sys/kern/kern_exit.c:458 [inline]
reaper(ffff8000ffffd4c8) at reaper+0xc2 sys/kern/kern_exit.c:497
end trace frame: 0x0, count: -8