uvm_fault(0xfffffd806b068bc0, 0x58, 0, 1) -> e kernel: page fault trap, code=0 Stopped at rtm_output+0x3d5: movl 0x58(%r14),%edi TID PID UID PRFLAGS PFLAGS CPU COMMAND * 36695 35690 0 0 0x4000000 0 syz-executor.0 rtm_output(ffff800000b58900,ffff8000216c2f50,ffff8000216c2eb0,8,0) at rtm_output+0x3d5 sys/net/rtsock.c:1035 route_output(fffffd806a11d600,fffffd8077f31558,0,0) at route_output+0x6ba sys/net/rtsock.c:864 route_usrreq(fffffd8077f31558,9,fffffd806a11d600,0,0,ffff80002166e540) at route_usrreq+0x391 sys/net/rtsock.c:283 sosend(fffffd8077f31558,0,ffff8000216c3160,0,0,952b51be) at sosend+0x668 sys/kern/uipc_socket.c:573 sendit(ffff80002166e540,3,ffff8000216c3240,952b51be,ffff8000216c3330) at sendit+0x589 sys/kern/uipc_syscalls.c:653 sys_sendto(ffff80002166e540,ffff8000216c32d8,ffff8000216c3330) at sys_sendto+0x80 sys/kern/uipc_syscalls.c:520 syscall(ffff8000216c33a0) at syscall+0x571 sys/arch/amd64/amd64/trap.c:587 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xebe83390ff0, 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(0xfffffd806b068bc0, 0x58, 0, 1) -> e ddb> trace rtm_output(ffff800000b58900,ffff8000216c2f50,ffff8000216c2eb0,8,0) at rtm_output+0x3d5 sys/net/rtsock.c:1035 route_output(fffffd806a11d600,fffffd8077f31558,0,0) at route_output+0x6ba sys/net/rtsock.c:864 route_usrreq(fffffd8077f31558,9,fffffd806a11d600,0,0,ffff80002166e540) at route_usrreq+0x391 sys/net/rtsock.c:283 sosend(fffffd8077f31558,0,ffff8000216c3160,0,0,952b51be) at sosend+0x668 sys/kern/uipc_socket.c:573 sendit(ffff80002166e540,3,ffff8000216c3240,952b51be,ffff8000216c3330) at sendit+0x589 sys/kern/uipc_syscalls.c:653 sys_sendto(ffff80002166e540,ffff8000216c32d8,ffff8000216c3330) at sys_sendto+0x80 sys/kern/uipc_syscalls.c:520 syscall(ffff8000216c33a0) at syscall+0x571 sys/arch/amd64/amd64/trap.c:587 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xebe83390ff0, count: -8 ddb> show registers rdi 0xffff800023904000 rsi 0x18f rbp 0xffff8000216c2ea0 rbx 0x3 rdx 0xffff800023904000 rcx 0x18e rax 0xffffffff8233ff8b rtm_output+0x1fb r8 0x8 r9 0x1 r10 0xaaedf36eff43836e r11 0x7328c8d585651fff r12 0x8 r13 0x8 r14 0 r15 0xffff8000216c2eb0 rip 0xffffffff82340165 rtm_output+0x3d5 cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff8000216c2e10 ss 0x10 rtm_output+0x3d5: movl 0x58(%r14),%edi ddb> show proc PROC (syz-executor.0) pid=36695 stat=onproc flags process=0 proc=4000000 pri=32, usrpri=78, nice=20 forw=0xffffffffffffffff, list=0xffff80002166efc0,0xffffffff828adc98 process=0xffff80002163bb98 user=0xffff8000216be000, vmspace=0xfffffd806b068bc0 estcpu=36, cpticks=0, pctcpu=0.0 user=0, sys=0, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 35690 28446 21134 0 2 0 syz-executor.0 *35690 36695 21134 0 7 0x4000000 syz-executor.0 58181 233610 16607 0 2 0x2 syz-executor.1 61958 496450 1 0 3 0x100083 ttyin getty 58520 59266 0 0 3 0x14200 bored sosplice 21134 229193 16607 0 3 0x82 nanoslp syz-executor.0 16607 301274 36472 0 3 0x82 kqread syz-fuzzer 16607 349057 36472 0 3 0x4000082 nanoslp syz-fuzzer 16607 322063 36472 0 3 0x4000082 thrsleep syz-fuzzer 16607 270999 36472 0 3 0x4000082 thrsleep syz-fuzzer 16607 9621 36472 0 3 0x4000082 thrsleep syz-fuzzer 16607 420994 36472 0 3 0x4000082 thrsleep syz-fuzzer 16607 515270 36472 0 3 0x4000082 thrsleep syz-fuzzer 36472 417321 92687 0 3 0x10008a sigsusp ksh 92687 212698 30376 0 3 0x9a select sshd 30376 54357 1 0 3 0x88 select sshd 79667 348715 21411 73 3 0x100090 kqread syslogd 21411 293341 1 0 3 0x100082 netio syslogd 68190 189105 1 0 3 0x100080 kqread resolvd 35489 15282 81159 77 3 0x100092 kqread dhcpleased 48273 164736 81159 77 3 0x100092 kqread dhcpleased 81159 314249 1 0 3 0x80 kqread dhcpleased 6766 4383 0 0 3 0x14200 bored smr 45956 236007 0 0 2 0x14200 zerothread 94616 178283 0 0 3 0x14200 aiodoned aiodoned 21610 251014 0 0 3 0x14200 syncer update 40434 223233 0 0 3 0x14200 cleaner cleaner 82813 98481 0 0 3 0x14200 reaper reaper 40031 126441 0 0 3 0x14200 pgdaemon pagedaemon 4364 497500 0 0 3 0x14200 bored crynlk 29264 315088 0 0 3 0x14200 bored crypto 45062 454071 0 0 3 0x14200 bored viomb 93656 187421 0 0 3 0x40014200 acpi0 acpi0 93125 16802 0 0 3 0x14200 bored softnet 855 469163 0 0 3 0x14200 bored systqmp 78987 72963 0 0 3 0x14200 bored systq 93527 402019 0 0 3 0x40014200 bored softclock 69065 298564 0 0 3 0x40014200 idle0 1 243266 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 10147 6365K 7128K 78643K 13253 0 pcb 13 8K 8K 78643K 205 0 rtable 110 3K 5K 78643K 439 0 ifaddr 64 12K 13K 78643K 167 0 counters 21 16K 16K 78643K 39 0 ioctlops 0 0K 4K 78643K 105 0 iov 0 0K 12K 78643K 108 0 mount 1 1K 1K 78643K 1 0 log 0 0K 0K 78643K 5 0 vnodes 1222 77K 77K 78643K 2109 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 5K 78643K 12 0 VM map 2 0K 0K 78643K 2 0 sem 12 0K 0K 78643K 586 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1697 195K 286K 78643K 12598 0 file desc 5 13K 25K 78643K 2696 0 sigio 0 0K 0K 78643K 2 0 proc 62 55K 71K 78643K 470 0 subproc 32 2K 2K 78643K 102 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 0 0K 0K 78643K 117 0 in_multi 33 2K 2K 78643K 217 0 ether_multi 1 0K 0K 78643K 54 0 mrt 1 0K 0K 78643K 19 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 49 228K 228K 78643K 49 0 exec 0 0K 2K 78643K 581 0 pagedep 1 8K 8K 78643K 1 0 inodedep 1 32K 32K 78643K 1 0 newblk 1 0K 0K 78643K 1 0 VM swap 7 26K 26K 78643K 7 0 UVM amap 196 29K 45K 78643K 33028 0 UVM aobj 65 3K 3K 78643K 65 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 181 0 NDP 11 0K 0K 78643K 46 0 temp 126 4202K 4268K 78643K 18676 0 kqueue 10 14K 34K 78643K 263 0 SYN cache 2 16K 16K 78643K 2 0 ddb> show all pools Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle rtpcb 120 181 0 177 1 0 1 1 0 8 0 rtentry 112 102 0 57 2 0 2 2 0 8 0 unpcb 120 705 0 691 1 0 1 1 0 8 0 syncache 296 4 0 4 1 1 0 1 0 8 0 tcpqe 32 58 0 58 1 1 0 1 0 8 0 tcpcb 736 403 0 397 14 12 2 5 0 8 1 arp 88 15 0 8 1 0 1 1 0 8 0 ipq 40 4 0 4 1 1 0 1 0 8 0 ipqe 40 176 0 176 1 1 0 1 0 8 0 inpcb 304 1157 0 1148 6 4 2 2 0 8 1 rttmr 72 7 0 7 1 1 0 1 0 8 0 ip6q 72 3 0 3 1 1 0 1 0 8 0 ip6af 40 5 0 5 1 1 0 1 0 8 0 nd6 48 23 0 17 1 0 1 1 0 8 0 pkpcb 40 26 0 26 2 2 0 1 0 8 0 kcovpl 48 6 0 4 1 0 1 1 0 8 0 ppxss 1152 10 0 10 1 1 0 1 0 8 0 pfrktable 1344 24 0 24 1 1 0 1 0 8 0 pfrule 1360 16 0 16 1 1 0 1 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 365 0 176 12 0 12 12 0 8 0 art_table 32 366 0 176 2 0 2 2 0 8 0 art_node 16 101 0 60 1 0 1 1 0 8 0 sysvmsgpl 40 32 0 20 1 0 1 1 0 8 0 semupl 112 4 0 4 1 1 0 1 0 8 0 semapl 112 579 0 569 1 0 1 1 0 8 0 shmpl 112 62 0 0 2 0 2 2 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 4898 0 3487 90 1 89 89 0 8 0 ffsino 240 4898 0 3487 85 1 84 84 0 8 0 nchpl 144 8300 0 6699 60 0 60 60 0 8 0 uvmvnodes 72 5476 0 0 100 0 100 100 0 8 0 vnodes 224 5476 0 0 323 0 323 323 0 8 0 namei 1024 20942 0 20942 2 1 1 1 0 8 1 pfiaddrpl 120 8 0 8 1 1 0 1 0 8 0 scsiplug 72 4 0 4 1 1 0 1 0 8 0 scxspl 216 23367 0 23367 10 9 1 8 0 8 1 plimitpl 152 85 0 77 1 0 1 1 0 8 0 sigapl 424 2917 0 2885 4 0 4 4 0 8 0 futexpl 56 26178 0 26178 2 1 1 1 0 8 1 knotepl 112 804 0 766 3 1 2 3 0 8 0 kqueuepl 184 1708 0 1702 1 0 1 1 0 8 0 pipepl 304 258 0 248 2 1 1 2 0 8 0 fdescpl 432 2901 0 2885 5 3 2 3 0 8 0 filepl 120 10911 0 10802 4 0 4 4 0 8 0 lockfpl 104 378 0 376 1 0 1 1 0 8 0 lockfspl 48 149 0 147 1 0 1 1 0 8 0 sessionpl 144 23 0 13 1 0 1 1 0 8 0 pgrppl 48 28 0 18 1 0 1 1 0 8 0 ucredpl 96 1483 0 1473 1 0 1 1 0 8 0 zombiepl 144 2885 0 2885 1 0 1 1 0 8 1 processpl 1008 2917 0 2885 5 0 5 5 0 8 0 procpl 672 5763 0 5724 4 0 4 4 0 8 0 sosppl 168 15 0 15 2 2 0 1 0 8 0 sockpl 448 2074 0 2049 4 0 4 4 0 8 0 mcl64k 65536 71 0 71 6 6 0 1 0 8 0 mcl16k 16384 30 0 30 4 4 0 1 0 8 0 mcl12k 12288 162 0 162 7 6 1 1 0 8 1 mcl9k 9216 35 0 35 2 2 0 1 0 8 0 mcl8k 8192 49 0 49 5 4 1 1 0 8 1 mcl4k 4096 172 0 172 5 4 1 1 0 8 1 mcl2k2 2112 18 0 18 2 2 0 1 0 8 0 mcl2k 2048 54269 0 54222 47 34 13 24 0 8 4 mtagpl 96 184 0 63 4 1 3 3 0 8 0 mbufpl 256 178084 0 177576 80 45 35 43 0 8 0 bufpl 280 6891 0 485 458 0 458 458 0 8 0 anonpl 24 747957 0 737263 109 30 79 90 0 188 12 amapchunkpl 152 81218 0 80791 36 18 18 28 0 158 0 amappl16 200 5406 0 5028 33 12 21 33 0 8 1 amappl14 184 93 0 92 2 1 1 1 0 8 0 amappl13 176 63 0 62 1 0 1 1 0 8 0 amappl12 168 559 0 555 1 0 1 1 0 8 0 amappl11 160 39 0 29 1 0 1 1 0 8 0 amappl10 152 59 0 53 1 0 1 1 0 8 0 amappl9 144 1688 0 1682 1 0 1 1 0 8 0 amappl8 136 952 0 906 3 1 2 2 0 8 0 amappl7 128 579 0 566 1 0 1 1 0 8 0 amappl6 120 1617 0 1604 1 0 1 1 0 8 0 amappl5 112 2225 0 2207 1 0 1 1 0 8 0 amappl4 104 743 0 719 1 0 1 1 0 8 0 amappl3 96 762 0 760 1 0 1 1 0 8 0 amappl2 88 1081 0 1028 2 0 2 2 0 8 0 amappl1 80 50311 0 49902 14 5 9 12 0 8 0 amappl 88 32373 0 32248 4 0 4 4 0 92 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 64 64 0 0 2 0 2 2 0 8 0 uaddrrnd 24 2901 0 2885 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 2901 0 2885 1 0 1 1 0 8 0 vmmpekpl 168 18463 0 18440 2 0 2 2 0 8 0 vmmpepl 168 320554 0 318950 108 33 75 81 0 357 3 vmsppl 272 2900 0 2885 3 1 2 2 0 8 0 rwobjpl 24 55793 0 54728 8 1 7 8 0 8 0 pdppl 4096 5809 0 5770 69 28 41 45 0 8 2 pvpl 32 1592130 0 1578089 220 79 141 152 0 265 23 pmappl 192 2900 0 2885 1 0 1 1 0 8 0 extentpl 40 58 0 40 1 0 1 1 0 8 0 phpool 112 434 0 144 10 1 9 9 0 8 0 ddb> machine ddbcpu 0 No such command ddb> trace rtm_output(ffff800000b58900,ffff8000216c2f50,ffff8000216c2eb0,8,0) at rtm_output+0x3d5 sys/net/rtsock.c:1035 route_output(fffffd806a11d600,fffffd8077f31558,0,0) at route_output+0x6ba sys/net/rtsock.c:864 route_usrreq(fffffd8077f31558,9,fffffd806a11d600,0,0,ffff80002166e540) at route_usrreq+0x391 sys/net/rtsock.c:283 sosend(fffffd8077f31558,0,ffff8000216c3160,0,0,952b51be) at sosend+0x668 sys/kern/uipc_socket.c:573 sendit(ffff80002166e540,3,ffff8000216c3240,952b51be,ffff8000216c3330) at sendit+0x589 sys/kern/uipc_syscalls.c:653 sys_sendto(ffff80002166e540,ffff8000216c32d8,ffff8000216c3330) at sys_sendto+0x80 sys/kern/uipc_syscalls.c:520 syscall(ffff8000216c33a0) at syscall+0x571 sys/arch/amd64/amd64/trap.c:587 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xebe83390ff0, count: -8 ddb> machine ddbcpu 1 No such command ddb> trace rtm_output(ffff800000b58900,ffff8000216c2f50,ffff8000216c2eb0,8,0) at rtm_output+0x3d5 sys/net/rtsock.c:1035 route_output(fffffd806a11d600,fffffd8077f31558,0,0) at route_output+0x6ba sys/net/rtsock.c:864 route_usrreq(fffffd8077f31558,9,fffffd806a11d600,0,0,ffff80002166e540) at route_usrreq+0x391 sys/net/rtsock.c:283 sosend(fffffd8077f31558,0,ffff8000216c3160,0,0,952b51be) at sosend+0x668 sys/kern/uipc_socket.c:573 sendit(ffff80002166e540,3,ffff8000216c3240,952b51be,ffff8000216c3330) at sendit+0x589 sys/kern/uipc_syscalls.c:653 sys_sendto(ffff80002166e540,ffff8000216c32d8,ffff8000216c3330) at sys_sendto+0x80 sys/kern/uipc_syscalls.c:520 syscall(ffff8000216c33a0) at syscall+0x571 sys/arch/amd64/amd64/trap.c:587 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xebe83390ff0, count: -8