uvm_fault(0xffffffff838d5220, 0xffff800001602000, 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 *344164 21832 0 0 0x4000000 0 syz-executor memcpy() at memcpy+0x19 rtm_msg1(14,ffff80003a954e18) at rtm_msg1+0x306 sys/net/rtsock.c:1627 rtm_addr(14,ffff800001601f00) at rtm_addr+0xb9 sys/net/rtsock.c:-1 in6_update_ifa(ffff800000b12800,ffff80003a955230,ffff800001601f00) at in6_update_ifa+0x199a sys/netinet6/in6.c:741 in6_ioctl_change_ifaddr(8080691a,ffff80003a955230,ffff800000b12800) at in6_ioctl_change_ifaddr+0x638 sys/netinet6/in6.c:352 ifioctl(ffff800001406678,8080691a,ffff80003a955230,ffff80002a7dfc98) at ifioctl+0x1515 pru_control sys/sys/protosw.h:352 [inline] ifioctl(ffff800001406678,8080691a,ffff80003a955230,ffff80002a7dfc98) at ifioctl+0x1515 sys/net/if.c:2454 sys_ioctl(ffff80002a7dfc98,ffff80003a955400,ffff80003a955350) at sys_ioctl+0x660 sys/kern/sys_generic.c:-1 syscall(ffff80003a955400) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003a955400) at syscall+0x962 sys/arch/amd64/amd64/trap.c:746 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xadc9f1aeee0, count: 6 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(0xffffffff838d5220, 0xffff800001602000, 0, 1) -> e ddb> trace memcpy() at memcpy+0x19 rtm_msg1(14,ffff80003a954e18) at rtm_msg1+0x306 sys/net/rtsock.c:1627 rtm_addr(14,ffff800001601f00) at rtm_addr+0xb9 sys/net/rtsock.c:-1 in6_update_ifa(ffff800000b12800,ffff80003a955230,ffff800001601f00) at in6_update_ifa+0x199a sys/netinet6/in6.c:741 in6_ioctl_change_ifaddr(8080691a,ffff80003a955230,ffff800000b12800) at in6_ioctl_change_ifaddr+0x638 sys/netinet6/in6.c:352 ifioctl(ffff800001406678,8080691a,ffff80003a955230,ffff80002a7dfc98) at ifioctl+0x1515 pru_control sys/sys/protosw.h:352 [inline] ifioctl(ffff800001406678,8080691a,ffff80003a955230,ffff80002a7dfc98) at ifioctl+0x1515 sys/net/if.c:2454 sys_ioctl(ffff80002a7dfc98,ffff80003a955400,ffff80003a955350) at sys_ioctl+0x660 sys/kern/sys_generic.c:-1 syscall(ffff80003a955400) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003a955400) at syscall+0x962 sys/arch/amd64/amd64/trap.c:746 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xadc9f1aeee0, count: -9 ddb> show registers rdi 0xfffffd805a1fc948 rsi 0xffff800001602000 rbp 0xffff80003a954d90 rbx 0 rdx 0xf9 rcx 0xe rax 0x7d8058bfa948 r8 0x2 r9 0x8080808080808080 r10 0xdb162dd4649a6d6a r11 0xfffffd805a1fc8c0 r12 0xf9 r13 0xf9 r14 0xc0 r15 0xfffffd806b4ec000 rip 0xffffffff8160e339 memcpy+0x19 cs 0x8 rflags 0x10202 __ALIGN_SIZE+0xf202 rsp 0xffff80003a954ce8 ss 0x10 memcpy+0x19: repe movsq (%rsi),%es:(%rdi) ddb> show proc PROC (syz-executor) tid=344164 pid=21832 tcnt=2 stat=onproc flags process=0 proc=4000000 runpri=32, usrpri=50, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff80003c9914f0,0xffff80003c990040 process=0xffff8000ffff0920 user=0xffff80003a950000, vmspace=0xfffffd806ba74e70 estcpu=36, cpticks=1, pctcpu=0.0, user=0, sys=1, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 85471 214464 55066 0 2 0 syz-executor 85471 81009 55066 0 3 0x4000080 fsleep syz-executor 21832 500262 10162 0 2 0 syz-executor *21832 344164 10162 0 7 0x4000000 syz-executor 12969 341511 92740 0 3 0x80 nanoslp syz-executor 12969 458842 92740 0 3 0x4000080 fifow syz-executor 12969 389277 92740 0 3 0x4000080 fsleep syz-executor 95886 493002 67599 0 2 0 syz-executor 95886 337884 67599 0 3 0x4000080 fsleep syz-executor 95886 2421 67599 0 3 0x4000080 fsleep syz-executor 38913 416612 13697 0 3 0x82 nanoslp syz-executor 10056 173737 0 0 3 0x14200 bored sosplice 10856 247094 13697 0 2 0x2 syz-executor 67599 260445 13697 0 3 0x82 nanoslp syz-executor 74560 396717 13697 0 2 0x2 syz-executor 10162 411267 13697 0 3 0x82 nanoslp syz-executor 74786 308065 13697 0 2 0x2 syz-executor 55066 247967 13697 0 2 0xc82 syz-executor 92740 507451 13697 0 3 0x82 nanoslp syz-executor 13697 516545 13803 0 3 0x82 kqread syz-executor 13803 429499 12825 0 3 0x10008a sigsusp ksh 12825 509944 67492 0 3 0x98 kqread sshd-session 67492 431368 5793 0 3 0x92 kqread sshd-session 25794 113095 1 0 3 0x100083 ttyopn getty 5793 233157 1 0 3 0x88 kqread sshd 76175 209007 91670 73 3 0x1100090 kqread syslogd 91670 386477 1 0 3 0x100082 sbwait syslogd 96117 299541 1 0 3 0x100080 kqread resolvd 96661 206241 0 0 3 0x14200 bored smr 7330 209978 0 0 2 0x14200 zerothread 10896 76 0 0 3 0x14200 aiodoned aiodoned 77488 448862 0 0 3 0x14200 syncer update 23887 246109 0 0 3 0x14200 cleaner cleaner 59670 266851 0 0 3 0x14200 reaper reaper 88112 238463 0 0 3 0x14200 pgdaemon pagedaemon 2177 503709 0 0 3 0x14200 bored viomb 48919 423520 0 0 3 0x40014200 acpi0 acpi0 86047 466962 0 0 3 0x14200 bored softnet7 86590 28253 0 0 3 0x14200 bored softnet6 52574 206665 0 0 3 0x14200 bored softnet5 52160 55344 0 0 3 0x14200 bored softnet4 18977 264033 0 0 3 0x14200 bored softnet3 69846 279225 0 0 3 0x14200 bored softnet2 83123 60437 0 0 3 0x14200 bored softnet1 20350 179882 0 0 3 0x14200 bored softnet0 59793 167665 0 0 3 0x14200 smrbar systqmp 72604 482276 0 0 3 0x14200 bored systq 28738 348907 0 0 3 0x40014200 tmoslp softclock 83578 443122 0 0 3 0x40014200 idle0 1 10735 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 10185 11053K 12132K 166960K 14011 0 pcb 18 16K 17K 166960K 533 0 rtable 181 9K 9K 166960K 508 0 pf 33 13K 22K 166960K 487 0 ifaddr 35 7K 8K 166960K 223 0 ifgroup 53 2K 2K 166960K 443 0 sysctl 4 1K 9K 166960K 25 0 counters 32 17K 18K 166960K 265 0 ioctlops 0 0K 4K 166960K 715 0 iov 0 0K 32K 166960K 185 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1471 92K 93K 166960K 3197 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 13K 166960K 40 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 1K 166960K 93 0 dirhash 12 2K 2K 166960K 27 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 15 53K 236K 166960K 2665 0 sigio 1 0K 0K 166960K 97 0 proc 54 43K 124K 166960K 699 0 subproc 72 4K 4K 166960K 82 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 395 0 in_multi 67 5K 7K 166960K 199 0 ether_multi 1 0K 0K 166960K 15 0 mrt 0 0K 0K 166960K 5 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 103 466K 466K 166960K 103 0 exec 0 0K 1K 166960K 509 0 fusefs mount 1 32K 32K 166960K 1 0 pfkey data 0 0K 0K 166960K 4 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 185 125K 173K 166960K 24592 0 UVM aobj 103 7K 7K 166960K 112 0 pinsyscall 30 60K 96K 166960K 3700 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 140 0 NDP 11 0K 2K 166960K 183 0 temp 78 8644K 8716K 166960K 82194 0 kqueue 7 12K 35K 166960K 522 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 120 168 0 165 1 0 1 1 0 8 0 rtentry 136 171 0 105 4 0 4 4 0 8 1 unpcb 144 1257 0 1245 4 3 1 4 0 8 0 syncache 336 12 0 12 2 2 0 1 0 8 0 tcpqe 32 5 0 5 2 2 0 1 0 8 0 tcpcb 736 957 0 952 8 6 2 7 0 8 1 arp 88 21 0 11 1 0 1 1 0 8 0 ipq 40 5 0 5 1 1 0 1 0 8 0 ipqe 40 11 0 11 1 1 0 1 0 8 0 inpcb 328 2919 0 2913 13 11 2 11 0 8 0 ip6q 72 1 0 1 1 1 0 1 0 8 0 ip6af 40 3 0 3 1 1 0 1 0 8 0 nd6 104 28 0 18 1 0 1 1 0 8 0 pkpcb 40 37 0 36 3 2 1 1 0 8 0 kcovpl 48 9 0 1 1 0 1 1 0 8 0 ppxss 1072 194 0 194 3 2 1 1 0 8 1 pppxif 1384 6 0 6 2 2 0 1 0 8 0 pfrktable 1344 1 0 1 1 1 0 1 0 8 0 pfstitem 24 2 0 0 1 0 1 1 0 8 0 pfstkey 128 52 0 50 1 0 1 1 0 8 0 pfstate 384 26 0 25 1 0 1 1 0 8 0 pfrule 1344 2 0 2 1 1 0 1 0 8 0 art_heap8 4096 4 0 0 4 0 4 4 0 8 0 art_heap4 256 797 0 444 28 5 23 28 0 8 0 art_table 40 801 0 444 5 0 5 5 0 8 0 art_node 32 166 0 115 1 0 1 1 0 8 0 sysvmsgpl 40 46 0 6 1 0 1 1 0 8 0 semupl 112 5 0 5 2 1 1 1 0 8 1 semapl 112 85 0 75 1 0 1 1 0 8 0 shmpl 112 109 0 9 3 0 3 3 0 8 0 dirhash 1024 27 0 10 3 0 3 3 0 8 0 dino2pl 256 6294 0 4797 95 0 95 95 0 8 0 ffsino 256 6294 0 4797 95 0 95 95 0 8 0 nchpl 144 9927 0 8238 63 0 63 63 0 8 0 rtmask 32 26 0 26 3 2 1 1 0 8 1 uvmvnodes 80 5926 0 0 121 0 121 121 0 8 0 vnodes 216 5926 0 0 330 0 330 330 0 8 0 namei 1024 31126 0 31125 2 1 1 2 0 8 0 kstatmem 264 322 0 300 3 1 2 3 0 8 0 acpiwqpl 32 2 0 2 1 0 1 1 1 8 1 scsiplug 72 4 0 4 2 2 0 1 0 8 0 scxspl 216 37317 0 37317 15 14 1 8 1 8 1 plimitpl 152 427 0 412 1 0 1 1 0 8 0 sigapl 424 2909 0 2864 7 1 6 7 0 8 0 knotepl 120 165209 0 165178 72 64 8 21 0 8 6 kqueuepl 184 797 0 789 2 1 1 2 0 8 0 pipepl 304 538 0 511 8 5 3 8 0 8 0 fdescpl 448 2879 0 2855 5 1 4 5 0 8 0 filepl 120 16687 0 16489 17 8 9 15 0 8 0 lockfpl 104 935 0 933 1 0 1 1 0 8 0 lockfspl 48 342 0 340 1 0 1 1 0 8 0 sessionpl 144 30 0 23 1 0 1 1 0 8 0 pgrppl 48 60 0 45 1 0 1 1 0 8 0 ucredpl 104 2731 0 2721 1 0 1 1 0 8 0 zombiepl 144 3196 0 3195 3 2 1 1 0 8 0 processpl 1152 2909 0 2864 5 1 4 5 0 8 0 procpl 664 6368 0 6317 7 1 6 7 0 8 0 sosppl 168 48 0 48 1 1 0 1 0 8 0 sockpl 552 4531 0 4509 14 10 4 12 0 8 1 mcl64k 65536 643 0 643 5 4 1 3 0 8 1 mcl16k 16384 104 0 104 3 2 1 1 0 8 1 mcl12k 12288 39 0 39 3 2 1 1 0 8 1 mcl9k 9216 55 0 55 3 2 1 1 0 8 1 mcl8k 8192 201 0 201 3 2 1 1 0 8 1 mcl4k 4096 7109 0 7057 14 6 8 12 0 8 0 mcl2k2 2112 5 0 5 2 2 0 1 0 8 0 mcl2k 2048 3110 0 3079 6 1 5 5 0 8 0 mtagpl 96 73 0 40 2 0 2 2 0 8 0 mbufpl 256 37003 0 36784 18 1 17 18 0 8 0 bufpl 280 15395 0 9167 447 1 446 446 0 8 0 anonpl 24 378882 0 375387 80 44 36 61 0 187 3 amapchunkpl 152 83003 0 82569 49 27 22 37 0 158 0 amappl16 200 7249 0 7216 54 50 4 22 0 8 0 amappl15 192 9 0 9 1 1 0 1 0 8 0 amappl14 184 122 0 115 1 0 1 1 0 8 0 amappl13 176 4 0 4 2 2 0 1 0 8 0 amappl12 168 3509 0 3485 3 1 2 3 0 8 0 amappl11 160 63 0 59 1 0 1 1 0 8 0 amappl10 152 8 0 7 1 0 1 1 0 8 0 amappl9 144 267 0 266 1 0 1 1 0 8 0 amappl8 136 54 0 51 1 0 1 1 0 8 0 amappl7 128 112 0 105 1 0 1 1 0 8 0 amappl6 120 185 0 182 1 0 1 1 0 8 0 amappl5 112 136 0 132 1 0 1 1 0 8 0 amappl4 104 304 0 289 1 0 1 1 0 8 0 amappl3 96 15015 0 14945 3 0 3 3 0 8 0 amappl2 88 3204 0 3149 2 0 2 2 0 8 0 amappl1 80 20136 0 19683 15 1 14 14 0 8 0 amappl 88 23314 0 23175 5 0 5 5 0 92 0 dma4096 4096 1 0 1 1 1 0 1 0 8 0 dma2048 2048 65 0 65 1 1 0 1 0 8 0 dma1024 1024 1 0 0 1 0 1 1 0 8 0 dma256 256 8 0 8 2 2 0 1 0 8 0 dma128 128 254 0 254 2 2 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 22 0 21 1 0 1 1 0 8 0 aobjpl 72 111 0 9 2 0 2 2 0 8 0 uaddrrnd 24 2879 0 2855 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 2879 0 2855 1 0 1 1 0 8 0 vmmpekpl 168 22948 0 22906 4 1 3 3 0 8 0 vmmpepl 168 179859 0 178407 107 25 82 100 0 357 1 vmsppl 368 2878 0 2855 4 1 3 4 0 8 0 rwobjpl 40 49194 0 42466 72 1 71 72 0 8 0 pdppl 4096 5764 0 5710 134 74 60 82 0 8 6 pvpl 32 1209162 0 1199631 168 57 111 136 0 265 9 pmappl 216 2878 0 2855 3 1 2 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 434 0 110 11 0 11 11 0 8 0 ddb> machine ddbcpu 0 No such command ddb> trace memcpy() at memcpy+0x19 rtm_msg1(14,ffff80003a954e18) at rtm_msg1+0x306 sys/net/rtsock.c:1627 rtm_addr(14,ffff800001601f00) at rtm_addr+0xb9 sys/net/rtsock.c:-1 in6_update_ifa(ffff800000b12800,ffff80003a955230,ffff800001601f00) at in6_update_ifa+0x199a sys/netinet6/in6.c:741 in6_ioctl_change_ifaddr(8080691a,ffff80003a955230,ffff800000b12800) at in6_ioctl_change_ifaddr+0x638 sys/netinet6/in6.c:352 ifioctl(ffff800001406678,8080691a,ffff80003a955230,ffff80002a7dfc98) at ifioctl+0x1515 pru_control sys/sys/protosw.h:352 [inline] ifioctl(ffff800001406678,8080691a,ffff80003a955230,ffff80002a7dfc98) at ifioctl+0x1515 sys/net/if.c:2454 sys_ioctl(ffff80002a7dfc98,ffff80003a955400,ffff80003a955350) at sys_ioctl+0x660 sys/kern/sys_generic.c:-1 syscall(ffff80003a955400) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003a955400) at syscall+0x962 sys/arch/amd64/amd64/trap.c:746 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xadc9f1aeee0, count: -9 ddb> machine ddbcpu 1 No such command ddb> trace memcpy() at memcpy+0x19 rtm_msg1(14,ffff80003a954e18) at rtm_msg1+0x306 sys/net/rtsock.c:1627 rtm_addr(14,ffff800001601f00) at rtm_addr+0xb9 sys/net/rtsock.c:-1 in6_update_ifa(ffff800000b12800,ffff80003a955230,ffff800001601f00) at in6_update_ifa+0x199a sys/netinet6/in6.c:741 in6_ioctl_change_ifaddr(8080691a,ffff80003a955230,ffff800000b12800) at in6_ioctl_change_ifaddr+0x638 sys/netinet6/in6.c:352 ifioctl(ffff800001406678,8080691a,ffff80003a955230,ffff80002a7dfc98) at ifioctl+0x1515 pru_control sys/sys/protosw.h:352 [inline] ifioctl(ffff800001406678,8080691a,ffff80003a955230,ffff80002a7dfc98) at ifioctl+0x1515 sys/net/if.c:2454 sys_ioctl(ffff80002a7dfc98,ffff80003a955400,ffff80003a955350) at sys_ioctl+0x660 sys/kern/sys_generic.c:-1 syscall(ffff80003a955400) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003a955400) at syscall+0x962 sys/arch/amd64/amd64/trap.c:746 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xadc9f1aeee0, count: -9