uvm_fault(0xffffffff83885c40, 0xffff8000014bc000, 0, 1) -> e kernel: page fault trap, code=0 Stopped at memcpy+0x19: repe movsq (%rsi),%es:(%rdi) TID PID UID PRFLAGS PFLAGS CPU COMMAND *344159 88816 0 0x14000 0x200 0 softnet0 memcpy() at memcpy+0x19 rtm_msg1(d,ffff80002a74b1e8) at rtm_msg1+0x306 sys/net/rtsock.c:1627 rtm_addr(d,ffff8000014bbf00) at rtm_addr+0xb9 sys/net/rtsock.c:-1 rt_ifa_del(ffff8000014bbf00,200004,ffff8000014bbf50,0) at rt_ifa_del+0x43f sys/net/route.c:1348 rt_ifa_dellocal(ffff8000014bbf00) at rt_ifa_dellocal+0x1a8 sys/net/route.c:1446 in6_purgeaddr(ffff8000014bbf00) at in6_purgeaddr+0x13a sys/netinet6/in6.c:913 nd6_expire(0) at nd6_expire+0x111 sys/netinet6/nd6.c:-1 taskq_thread(ffff80000002c000) at taskq_thread+0xe4 sys/kern/kern_task.c:446 end trace frame: 0x0, count: 7 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(0xffffffff83885c40, 0xffff8000014bc000, 0, 1) -> e ddb> trace memcpy() at memcpy+0x19 rtm_msg1(d,ffff80002a74b1e8) at rtm_msg1+0x306 sys/net/rtsock.c:1627 rtm_addr(d,ffff8000014bbf00) at rtm_addr+0xb9 sys/net/rtsock.c:-1 rt_ifa_del(ffff8000014bbf00,200004,ffff8000014bbf50,0) at rt_ifa_del+0x43f sys/net/route.c:1348 rt_ifa_dellocal(ffff8000014bbf00) at rt_ifa_dellocal+0x1a8 sys/net/route.c:1446 in6_purgeaddr(ffff8000014bbf00) at in6_purgeaddr+0x13a sys/netinet6/in6.c:913 nd6_expire(0) at nd6_expire+0x111 sys/netinet6/nd6.c:-1 taskq_thread(ffff80000002c000) at taskq_thread+0xe4 sys/kern/kern_task.c:446 end trace frame: 0x0, count: -8 ddb> show registers rdi 0xfffffd8067dc48f0 rsi 0xffff8000014bc000 rbp 0xffff80002a74b160 rbx 0 rdx 0xea rcx 0xe rax 0x7d80669088f0 r8 0x2 r9 0x5dc r10 0x405469865f4a105 r11 0xfffffd8067dc4878 r12 0xea r13 0xea r14 0x78 r15 0xfffffd8076514500 rip 0xffffffff8217b989 memcpy+0x19 cs 0x8 rflags 0x10206 __ALIGN_SIZE+0xf206 rsp 0xffff80002a74b0b8 ss 0x10 memcpy+0x19: repe movsq (%rsi),%es:(%rdi) ddb> show proc PROC (softnet0) tid=344159 pid=88816 tcnt=1 stat=onproc flags process=14000 proc=200 runpri=50, usrpri=51, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff80002a72c530,0xffff80002a72c010 process=0xffff8000ffffdb00 user=0xffff80002a746000, vmspace=0xffffffff839bcca8 estcpu=1, cpticks=4, pctcpu=0.0, user=0, sys=0, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 46502 331429 6024 0 2 0 syz-executor 46502 362289 6024 0 2 0x4000000 syz-executor 73281 516356 80989 0 2 0xc80 syz-executor 73281 322343 80989 0 3 0x4000080 sbwait syz-executor 73281 368384 80989 0 3 0x4000080 fsleep syz-executor 28201 475260 66056 60928 2 0x10 syz-executor 28201 221344 66056 60928 3 0x4000090 fsleep syz-executor 28201 214646 66056 60928 3 0x4000090 fsleep syz-executor 84153 341837 39660 0 2 0 syz-executor 84153 151131 39660 0 2 0x4000000 syz-executor 84153 240696 39660 0 3 0x4000000 inode syz-executor 65264 517369 88139 0 2 0xc90 syz-executor 65264 316331 88139 0 3 0x4000090 netacc syz-executor 65264 144023 88139 0 3 0x4000090 fsleep syz-executor 51343 212488 11931 0 2 0xc80 syz-executor 51343 146075 11931 0 3 0x4000080 sbwait syz-executor 51343 401145 11931 0 3 0x4000080 fsleep syz-executor 90393 208654 0 0 3 0x14200 acct acct 34207 509391 68283 0 2 0xc82 syz-executor 6024 253475 68283 0 2 0xc82 syz-executor 11931 180880 68283 0 2 0xc82 syz-executor 88139 154559 68283 0 2 0xc82 syz-executor 66056 9240 68283 0 2 0xc82 syz-executor 39660 104142 68283 0 2 0xc82 syz-executor 80989 133364 68283 0 2 0xc82 syz-executor 11011 219474 68283 0 2 0xc82 syz-executor 68283 28692 70064 0 3 0x82 kqread syz-executor 70064 462948 91235 0 3 0x10008a sigsusp ksh 91235 76677 42524 0 3 0x98 kqread sshd-session 42524 493015 71361 0 3 0x92 kqread sshd-session 46064 340825 1 0 3 0x100083 ttyopn getty 71361 65253 1 0 3 0x88 kqread sshd 55500 165289 46006 73 3 0x1100090 kqread syslogd 46006 260593 1 0 3 0x100082 sbwait syslogd 78265 292288 1 0 3 0x100080 kqread resolvd 74282 386049 90124 77 3 0x100092 kqread dhcpleased 30886 331279 90124 77 3 0x100092 kqread dhcpleased 90124 372575 1 0 3 0x80 kqread dhcpleased 25087 98645 0 0 3 0x14200 bored smr 80537 130454 0 0 2 0x14200 zerothread 19438 4951 0 0 3 0x14200 aiodoned aiodoned 80622 517539 0 0 3 0x14200 syncer update 20798 110932 0 0 3 0x14200 cleaner cleaner 77223 390081 0 0 3 0x14200 reaper reaper 63162 249343 0 0 3 0x14200 pgdaemon pagedaemon 97299 286165 0 0 3 0x14200 bored viomb 19624 444168 0 0 3 0x40014200 acpi0 acpi0 *88816 344159 0 0 7 0x14200 softnet0 70095 416471 0 0 2 0x14200 systqmp 49991 143374 0 0 3 0x14200 bored systq 73812 81188 0 0 2 0x40014200 softclock 47488 396756 0 0 3 0x40014200 idle0 1 203014 0 0 3 0x82 wait init 0 0 -1 0 3 0x10010200 scheduler swapper ddb> show all locks No such command ddb> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10175 11047K 11672K 166960K 12226 0 pcb 18 15K 16K 166960K 193 0 rtable 243 9K 9K 166960K 433 0 pf 35 13K 17K 166960K 83 0 ifaddr 44 7K 8K 166960K 71 0 ifgroup 52 2K 2K 166960K 96 0 sysctl 3 1K 9K 166960K 9 0 counters 35 18K 18K 166960K 59 0 ioctlops 0 0K 4K 166960K 95 0 iov 0 0K 14K 166960K 89 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1440 91K 91K 166960K 1915 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 5K 166960K 8 0 VM map 2 1K 1K 166960K 2 0 sem 11 0K 0K 166960K 15 0 dirhash 12 2K 2K 166960K 18 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 18 65K 106K 166960K 551 0 sigio 0 0K 0K 166960K 7 0 proc 60 59K 83K 166960K 527 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 52 0 in_multi 103 7K 7K 166960K 129 0 ether_multi 1 0K 0K 166960K 5 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 79 360K 360K 166960K 79 0 exec 0 0K 1K 166960K 391 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 248 153K 168K 166960K 6507 0 UVM aobj 8 2K 2K 166960K 8 0 pinsyscall 39 78K 93K 166960K 1627 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 31 0 NDP 13 0K 2K 166960K 47 0 temp 54 8666K 8921K 166960K 18004 0 kqueue 14 22K 26K 166960K 106 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 67 0 63 1 0 1 1 0 8 0 rtentry 136 128 0 24 4 0 4 4 0 8 0 unpcb 144 404 0 387 1 0 1 1 0 8 0 syncache 336 6 0 6 1 0 1 1 0 8 1 tcpqe 32 1 0 1 1 0 1 1 0 8 1 tcpcb 736 164 0 157 4 0 4 4 0 8 3 arp 96 18 0 0 1 0 1 1 0 8 0 ipq 40 1 0 0 1 0 1 1 0 8 0 ipqe 40 2 0 1 1 0 1 1 0 8 0 inpcb 328 529 0 517 7 0 7 7 0 8 5 ip6q 72 6 0 3 1 0 1 1 0 8 0 ip6af 40 10 0 6 1 0 1 1 0 8 0 nd6 112 28 0 2 1 0 1 1 0 8 0 pkpcb 40 4 0 4 1 0 1 1 0 8 1 kcovpl 48 8 0 0 1 0 1 1 0 8 0 mppekey 1024 2 0 2 1 0 1 1 0 8 1 ppxss 1072 22 0 20 1 0 1 1 0 8 0 pppxif 1384 3 0 3 1 0 1 1 0 8 1 pfstscr 40 1 0 1 1 0 1 1 0 8 1 pfstkey 128 1 0 1 1 0 1 1 0 8 1 pfstate 384 1 0 1 1 0 1 1 0 8 1 pfrule 1344 2 0 2 1 0 1 1 0 8 1 art_heap8 4096 2 0 0 2 0 2 2 0 8 0 art_heap4 256 598 0 146 33 0 33 33 0 8 2 art_table 40 600 0 146 6 0 6 6 0 8 0 art_node 32 127 0 34 1 0 1 1 0 8 0 sysvmsgpl 40 16 0 13 1 0 1 1 0 8 0 semapl 112 13 0 4 1 0 1 1 0 8 0 shmpl 112 5 0 0 1 0 1 1 0 8 0 dirhash 1024 21 0 4 3 0 3 3 0 8 0 dino2pl 256 2357 0 853 95 0 95 95 0 8 0 ffsino 256 2357 0 853 95 0 95 95 0 8 0 nchpl 144 3132 0 1440 64 0 64 64 0 8 0 rtmask 32 4 0 3 1 0 1 1 0 8 0 vnodes 216 2818 0 0 157 0 157 157 0 8 0 namei 1024 10188 0 10188 2 0 2 2 0 8 2 kstatmem 264 56 0 32 2 0 2 2 0 8 0 scsiplug 72 2 0 2 1 0 1 1 0 8 1 scxspl 216 9849 0 9849 2 0 2 2 1 8 2 plimitpl 152 156 0 139 1 0 1 1 0 8 0 sigapl 424 836 0 792 6 0 6 6 0 8 1 knotepl 120 20948 0 20901 23 12 11 17 0 8 8 kqueuepl 184 162 0 152 1 0 1 1 0 8 0 pipepl 304 216 0 189 8 0 8 8 0 8 5 fdescpl 448 820 0 790 4 0 4 4 0 8 0 filepl 120 4808 0 4586 12 0 12 12 0 8 3 lockfpl 104 202 0 198 1 0 1 1 0 8 0 lockfspl 48 79 0 75 1 0 1 1 0 8 0 sessionpl 144 23 0 15 1 0 1 1 0 8 0 pgrppl 48 35 0 19 1 0 1 1 0 8 0 ucredpl 104 577 0 564 1 0 1 1 0 8 0 zombiepl 144 794 0 792 1 0 1 1 0 8 0 processpl 1152 836 0 792 4 0 4 4 0 8 0 procpl 664 1457 0 1402 6 0 6 6 0 8 0 sosppl 176 4 0 3 1 0 1 1 0 8 0 sockpl 552 1085 0 1052 8 0 8 8 0 8 5 mcl64k 65536 150 0 150 1 0 1 1 0 8 1 mcl16k 16384 1 0 1 1 0 1 1 0 8 1 mcl9k 9216 2 0 2 1 0 1 1 0 8 1 mcl8k 8192 6 0 6 1 0 1 1 0 8 1 mcl4k 4096 2988 0 2935 14 0 14 14 0 8 7 mcl2k 2048 774 0 765 2 0 2 2 0 8 0 mtagpl 96 66 0 5 2 0 2 2 0 8 0 mbufpl 256 8594 0 8353 16 0 16 16 0 8 0 bufpl 280 3282 0 121 226 0 226 226 0 8 0 anonpl 24 112136 0 108331 33 0 33 33 0 187 10 amapchunkpl 152 20751 0 20029 35 0 35 35 0 158 7 amappl16 200 1338 0 1273 4 0 4 4 0 8 0 amappl15 192 2 0 2 1 0 1 1 0 8 1 amappl14 184 17 0 16 1 0 1 1 0 8 0 amappl13 176 481 0 480 1 0 1 1 0 8 0 amappl12 168 1164 0 1125 2 0 2 2 0 8 0 amappl11 160 6 0 6 1 0 1 1 0 8 1 amappl10 152 44 0 34 1 0 1 1 0 8 0 amappl9 144 259 0 259 1 0 1 1 0 8 1 amappl8 136 19 0 17 1 0 1 1 0 8 0 amappl7 128 76 0 75 1 0 1 1 0 8 0 amappl6 120 275 0 264 1 0 1 1 0 8 0 amappl5 112 83 0 75 1 0 1 1 0 8 0 amappl4 104 399 0 373 1 0 1 1 0 8 0 amappl3 96 3927 0 3810 4 0 4 4 0 8 0 amappl2 88 527 0 472 2 0 2 2 0 8 0 amappl1 80 11269 0 10736 15 0 15 15 0 8 3 amappl 88 5736 0 5556 5 0 5 5 0 92 0 uvmvnodes 80 105 0 0 3 0 3 3 0 8 0 dma4096 4096 1 0 1 1 0 1 1 0 8 1 dma1024 1024 1 0 0 1 0 1 1 0 8 0 dma256 256 6 0 6 1 0 1 1 0 8 1 dma128 128 253 0 253 1 0 1 1 0 8 1 dma64 64 6 0 6 1 0 1 1 0 8 1 dma32 32 7 0 7 1 0 1 1 0 8 1 dma16 16 18 0 17 1 0 1 1 0 8 0 aobjpl 72 7 0 0 1 0 1 1 0 8 0 uaddrrnd 24 820 0 790 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 820 0 790 1 0 1 1 0 8 0 vmmpekpl 168 8212 0 8185 2 0 2 2 0 8 0 vmmpepl 168 58271 0 56386 90 0 90 90 0 357 8 vmsppl 368 819 0 790 4 0 4 4 0 8 1 rwobjpl 40 17202 0 16194 12 0 12 12 0 8 1 pdppl 4096 1647 0 1580 93 26 67 77 0 8 0 pvpl 32 338850 0 328753 108 0 108 108 0 265 25 pmappl 216 819 0 790 2 0 2 2 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 375 0 26 10 0 10 10 0 8 0 ddb> machine ddbcpu 0 No such command ddb> trace memcpy() at memcpy+0x19 rtm_msg1(d,ffff80002a74b1e8) at rtm_msg1+0x306 sys/net/rtsock.c:1627 rtm_addr(d,ffff8000014bbf00) at rtm_addr+0xb9 sys/net/rtsock.c:-1 rt_ifa_del(ffff8000014bbf00,200004,ffff8000014bbf50,0) at rt_ifa_del+0x43f sys/net/route.c:1348 rt_ifa_dellocal(ffff8000014bbf00) at rt_ifa_dellocal+0x1a8 sys/net/route.c:1446 in6_purgeaddr(ffff8000014bbf00) at in6_purgeaddr+0x13a sys/netinet6/in6.c:913 nd6_expire(0) at nd6_expire+0x111 sys/netinet6/nd6.c:-1 taskq_thread(ffff80000002c000) at taskq_thread+0xe4 sys/kern/kern_task.c:446 end trace frame: 0x0, count: -8 ddb> machine ddbcpu 1 No such command ddb> trace memcpy() at memcpy+0x19 rtm_msg1(d,ffff80002a74b1e8) at rtm_msg1+0x306 sys/net/rtsock.c:1627 rtm_addr(d,ffff8000014bbf00) at rtm_addr+0xb9 sys/net/rtsock.c:-1 rt_ifa_del(ffff8000014bbf00,200004,ffff8000014bbf50,0) at rt_ifa_del+0x43f sys/net/route.c:1348 rt_ifa_dellocal(ffff8000014bbf00) at rt_ifa_dellocal+0x1a8 sys/net/route.c:1446 in6_purgeaddr(ffff8000014bbf00) at in6_purgeaddr+0x13a sys/netinet6/in6.c:913 nd6_expire(0) at nd6_expire+0x111 sys/netinet6/nd6.c:-1 taskq_thread(ffff80000002c000) at taskq_thread+0xe4 sys/kern/kern_task.c:446 end trace frame: 0x0, count: -8