uvm_fault(0xfffffd807f00b990, 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 *124653 30433 0 0 0x4000000 0 syz-executor.1 rtm_output(ffff800000b76800,ffff8000216ff360,ffff8000216ff2c0,8,0) at rtm_output+0x3d5 sys/net/rtsock.c:1035 route_output(fffffd8065ca6f00,fffffd806f5f0548,0,0) at route_output+0x6ba sys/net/rtsock.c:864 route_usrreq(fffffd806f5f0548,9,fffffd8065ca6f00,0,0,ffff8000216662b0) at route_usrreq+0x391 sys/net/rtsock.c:283 sosend(fffffd806f5f0548,0,ffff8000216ff570,0,0,0) at sosend+0x668 sys/kern/uipc_socket.c:573 sendit(ffff8000216662b0,3,ffff8000216ff650,0,ffff8000216ff740) at sendit+0x589 sys/kern/uipc_syscalls.c:653 sys_sendto(ffff8000216662b0,ffff8000216ff6e8,ffff8000216ff740) at sys_sendto+0x80 sys/kern/uipc_syscalls.c:520 syscall(ffff8000216ff7b0) at syscall+0x571 sys/arch/amd64/amd64/trap.c:587 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x386bd32eb10, 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(0xfffffd807f00b990, 0x58, 0, 1) -> e ddb> trace rtm_output(ffff800000b76800,ffff8000216ff360,ffff8000216ff2c0,8,0) at rtm_output+0x3d5 sys/net/rtsock.c:1035 route_output(fffffd8065ca6f00,fffffd806f5f0548,0,0) at route_output+0x6ba sys/net/rtsock.c:864 route_usrreq(fffffd806f5f0548,9,fffffd8065ca6f00,0,0,ffff8000216662b0) at route_usrreq+0x391 sys/net/rtsock.c:283 sosend(fffffd806f5f0548,0,ffff8000216ff570,0,0,0) at sosend+0x668 sys/kern/uipc_socket.c:573 sendit(ffff8000216662b0,3,ffff8000216ff650,0,ffff8000216ff740) at sendit+0x589 sys/kern/uipc_syscalls.c:653 sys_sendto(ffff8000216662b0,ffff8000216ff6e8,ffff8000216ff740) at sys_sendto+0x80 sys/kern/uipc_syscalls.c:520 syscall(ffff8000216ff7b0) at syscall+0x571 sys/arch/amd64/amd64/trap.c:587 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x386bd32eb10, count: -8 ddb> show registers rdi 0xffff800021706000 rsi 0x192 rbp 0xffff8000216ff2b0 rbx 0x3 rdx 0xffff800021706000 rcx 0x191 rax 0xffffffff8233ff8b rtm_output+0x1fb r8 0x8 r9 0x1 r10 0x71cc197389395142 r11 0xf26d5ce922407603 r12 0x8 r13 0x8 r14 0 r15 0xffff8000216ff2c0 rip 0xffffffff82340165 rtm_output+0x3d5 cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff8000216ff220 ss 0x10 rtm_output+0x3d5: movl 0x58(%r14),%edi ddb> show proc PROC (syz-executor.1) pid=124653 stat=onproc flags process=0 proc=4000000 pri=32, usrpri=50, nice=20 forw=0xffffffffffffffff, list=0xffff800021666d30,0xffffffff828adc98 process=0xffff8000216647e0 user=0xffff8000216fa000, vmspace=0xfffffd807f00b990 estcpu=36, cpticks=1, pctcpu=0.0 user=0, sys=1, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 30433 458372 47 0 2 0 syz-executor.1 *30433 124653 47 0 7 0x4000000 syz-executor.1 3069 307385 0 0 3 0x14200 bored sosplice 74286 478146 0 0 3 0x14280 nfsidl nfsio 2919 61673 0 0 3 0x14280 nfsidl nfsio 35270 286827 0 0 3 0x14280 nfsidl nfsio 3791 259023 0 0 3 0x14280 nfsidl nfsio 91707 191399 0 0 3 0x14280 nfsidl nfsio 20185 243396 0 0 3 0x14280 nfsidl nfsio 27640 270217 0 0 3 0x14280 nfsidl nfsio 41805 447192 0 0 3 0x14280 nfsidl nfsio 2738 58397 0 0 3 0x14280 nfsidl nfsio 52232 460140 0 0 3 0x14280 nfsidl nfsio 76413 116706 0 0 3 0x14280 nfsidl nfsio 73025 173755 0 0 3 0x14280 nfsidl nfsio 31426 416591 0 0 3 0x14280 nfsidl nfsio 94933 367212 0 0 3 0x14280 nfsidl nfsio 69297 196517 0 0 3 0x14280 nfsidl nfsio 1649 35166 0 0 3 0x14280 nfsidl nfsio 42890 366425 0 0 3 0x14280 nfsidl nfsio 4972 145330 0 0 3 0x14280 nfsidl nfsio 32013 322832 0 0 3 0x14280 nfsidl nfsio 39876 83111 0 0 3 0x14280 nfsidl nfsio 41480 207074 86596 0 2 0x2 syz-executor.0 47 283573 86596 0 3 0x82 nanoslp syz-executor.1 86596 342562 14616 0 3 0x82 thrsleep syz-fuzzer 86596 280111 14616 0 3 0x4000082 nanoslp syz-fuzzer 86596 329270 14616 0 3 0x4000082 thrsleep syz-fuzzer 86596 291173 14616 0 3 0x4000082 thrsleep syz-fuzzer 86596 280827 14616 0 3 0x4000082 thrsleep syz-fuzzer 86596 57563 14616 0 3 0x4000082 kqread syz-fuzzer 86596 14278 14616 0 3 0x4000082 thrsleep syz-fuzzer 86596 300583 14616 0 3 0x4000082 thrsleep syz-fuzzer 14616 378822 24116 0 3 0x10008a sigsusp ksh 24116 213060 3635 0 3 0x9a select sshd 98476 217637 1 0 3 0x100083 ttyin getty 3635 103819 1 0 3 0x88 select sshd 93007 321536 48329 73 3 0x100090 kqread syslogd 48329 501971 1 0 3 0x100082 netio syslogd 89616 255327 1 0 3 0x100080 kqread resolvd 47656 72198 69443 77 3 0x100092 kqread dhcpleased 73065 2217 69443 77 3 0x100092 kqread dhcpleased 69443 496682 1 0 3 0x80 kqread dhcpleased 41503 107608 0 0 3 0x14200 bored smr 64297 357979 0 0 2 0x14200 zerothread 97872 517705 0 0 3 0x14200 aiodoned aiodoned 50368 429638 0 0 3 0x14200 syncer update 12649 310410 0 0 3 0x14200 cleaner cleaner 81367 150993 0 0 3 0x14200 reaper reaper 49305 86382 0 0 3 0x14200 pgdaemon pagedaemon 14515 26565 0 0 3 0x14200 bored crynlk 78838 12618 0 0 3 0x14200 bored crypto 97622 455102 0 0 3 0x14200 bored viomb 77620 348010 0 0 3 0x40014200 acpi0 acpi0 43112 100009 0 0 3 0x14200 bored softnet 18442 152659 0 0 3 0x14200 bored systqmp 27641 465350 0 0 3 0x14200 bored systq 22991 338452 0 0 3 0x40014200 bored softclock 36138 135976 0 0 3 0x40014200 idle0 1 122401 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 10135 6367K 7530K 78643K 14161 0 pcb 13 8K 8K 78643K 210 0 rtable 114 5K 5K 78643K 307 0 ifaddr 57 12K 12K 78643K 122 0 counters 21 16K 16K 78643K 35 0 ioctlops 0 0K 4K 78643K 101 0 iov 0 0K 16K 78643K 70 0 mount 1 1K 1K 78643K 1 0 log 0 0K 0K 78643K 5 0 vnodes 1225 77K 77K 78643K 2125 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 436 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1697 195K 286K 78643K 12598 0 file desc 5 13K 25K 78643K 2927 0 sigio 0 0K 0K 78643K 23 0 proc 64 55K 71K 78643K 348 0 subproc 32 2K 2K 78643K 51 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 0 0K 0K 78643K 168 0 in_multi 33 2K 2K 78643K 185 0 ether_multi 1 0K 0K 78643K 50 0 mrt 0 0K 0K 78643K 8 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 497 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 207 28K 28K 78643K 35900 0 UVM aobj 25 2K 2K 78643K 25 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 1K 78643K 168 0 NDP 9 0K 0K 78643K 29 0 temp 118 4204K 4268K 78643K 14075 0 kqueue 10 14K 19K 78643K 153 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 99 0 95 1 0 1 1 0 8 0 rtentry 112 56 0 12 2 0 2 2 0 8 0 unpcb 120 720 0 707 1 0 1 1 0 8 0 syncache 296 25 0 25 3 3 0 1 0 8 0 tcpqe 32 11 0 11 2 2 0 1 0 8 0 tcpcb 736 416 0 412 14 13 1 4 0 8 0 arp 88 8 0 2 1 0 1 1 0 8 0 inpcb 304 1192 0 1185 5 4 1 2 0 8 0 nd6 48 9 0 3 1 0 1 1 0 8 0 kcovpl 48 3 0 1 1 0 1 1 0 8 0 ppxss 1152 9 0 9 2 2 0 1 0 8 0 pfrktable 1344 3 0 1 1 0 1 1 0 8 0 pfrule 1360 24 0 16 1 0 1 1 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 232 0 44 12 0 12 12 0 8 0 art_table 32 233 0 44 2 0 2 2 0 8 0 art_node 16 55 0 15 1 0 1 1 0 8 0 sysvmsgpl 40 20 0 10 1 0 1 1 0 8 0 semapl 112 434 0 424 1 0 1 1 0 8 0 shmpl 112 22 0 0 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 5049 0 3645 90 1 89 89 0 8 0 ffsino 240 5049 0 3645 84 0 84 84 0 8 0 nchpl 144 8650 0 7048 60 0 60 60 0 8 0 uvmvnodes 72 5744 0 0 105 0 105 105 0 8 0 vnodes 224 5744 0 0 338 0 338 338 0 8 0 namei 1024 21513 0 21513 1 0 1 1 0 8 1 pfiaddrpl 120 8 0 0 1 0 1 1 0 8 0 scxspl 216 24898 0 24898 9 8 1 8 0 8 1 plimitpl 152 93 0 85 1 0 1 1 0 8 0 sigapl 424 3178 0 3126 6 0 6 6 0 8 0 futexpl 56 26184 0 26184 1 0 1 1 0 8 1 knotepl 112 310 0 272 2 0 2 2 0 8 0 kqueuepl 184 1556 0 1550 1 0 1 1 0 8 0 pipepl 304 286 0 276 2 1 1 2 0 8 0 fdescpl 432 3142 0 3126 3 1 2 3 0 8 0 filepl 120 10941 0 10832 6 2 4 6 0 8 0 lockfpl 104 473 0 471 1 0 1 1 0 8 0 lockfspl 48 182 0 180 1 0 1 1 0 8 0 sessionpl 144 18 0 8 1 0 1 1 0 8 0 pgrppl 48 33 0 23 1 0 1 1 0 8 0 ucredpl 96 1420 0 1402 1 0 1 1 0 8 0 zombiepl 144 3126 0 3126 1 0 1 1 0 8 1 processpl 1008 3178 0 3126 7 0 7 7 0 8 0 procpl 672 6309 0 6249 6 0 6 6 0 8 0 sosppl 168 16 0 16 1 1 0 1 0 8 0 sockpl 448 2011 0 1987 7 4 3 5 0 8 0 mcl64k 65536 89 0 89 5 5 0 1 0 8 0 mcl16k 16384 38 0 38 3 3 0 1 0 8 0 mcl12k 12288 108 0 108 6 5 1 1 0 8 1 mcl9k 9216 8 0 8 2 2 0 1 0 8 0 mcl8k 8192 75 0 75 7 6 1 1 0 8 1 mcl4k 4096 173 0 173 4 4 0 1 0 8 0 mcl2k2 2112 20 0 20 2 2 0 1 0 8 0 mcl2k 2048 41849 0 41795 30 20 10 15 0 8 1 mtagpl 96 265 0 14 8 1 7 7 0 8 0 mbufpl 256 159617 0 158860 56 6 50 52 0 8 0 bufpl 280 8867 0 2461 458 0 458 458 0 8 0 anonpl 24 782603 0 772209 104 19 85 89 0 188 17 amapchunkpl 152 84101 0 83606 23 2 21 21 0 158 1 amappl16 200 6916 0 6607 38 16 22 29 0 8 5 amappl15 192 1 0 0 1 0 1 1 0 8 0 amappl14 184 3 0 1 1 0 1 1 0 8 0 amappl13 176 98 0 97 1 0 1 1 0 8 0 amappl12 168 1447 0 1444 1 0 1 1 0 8 0 amappl11 160 39 0 29 1 0 1 1 0 8 0 amappl10 152 335 0 330 1 0 1 1 0 8 0 amappl9 144 1381 0 1378 1 0 1 1 0 8 0 amappl8 136 419 0 368 2 0 2 2 0 8 0 amappl7 128 69 0 57 1 0 1 1 0 8 0 amappl6 120 1279 0 1264 1 0 1 1 0 8 0 amappl5 112 1958 0 1943 1 0 1 1 0 8 0 amappl4 104 570 0 547 1 0 1 1 0 8 0 amappl3 96 1607 0 1603 1 0 1 1 0 8 0 amappl2 88 1974 0 1920 2 0 2 2 0 8 0 amappl1 80 53718 0 53306 13 4 9 12 0 8 0 amappl 88 35309 0 35178 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 24 0 0 1 0 1 1 0 8 0 uaddrrnd 24 3142 0 3126 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 3142 0 3126 1 0 1 1 0 8 0 vmmpekpl 168 20571 0 20551 2 0 2 2 0 8 0 vmmpepl 168 347469 0 345914 94 14 80 84 0 357 9 vmsppl 272 3141 0 3126 3 1 2 2 0 8 1 rwobjpl 24 60524 0 59513 9 1 8 8 0 8 1 pdppl 4096 6291 0 6252 63 22 41 45 0 8 2 pvpl 32 1696450 0 1682634 214 60 154 158 0 265 33 pmappl 192 3141 0 3126 1 0 1 1 0 8 0 extentpl 40 58 0 40 1 0 1 1 0 8 0 phpool 112 387 0 87 9 0 9 9 0 8 0 ddb> machine ddbcpu 0 No such command ddb> trace rtm_output(ffff800000b76800,ffff8000216ff360,ffff8000216ff2c0,8,0) at rtm_output+0x3d5 sys/net/rtsock.c:1035 route_output(fffffd8065ca6f00,fffffd806f5f0548,0,0) at route_output+0x6ba sys/net/rtsock.c:864 route_usrreq(fffffd806f5f0548,9,fffffd8065ca6f00,0,0,ffff8000216662b0) at route_usrreq+0x391 sys/net/rtsock.c:283 sosend(fffffd806f5f0548,0,ffff8000216ff570,0,0,0) at sosend+0x668 sys/kern/uipc_socket.c:573 sendit(ffff8000216662b0,3,ffff8000216ff650,0,ffff8000216ff740) at sendit+0x589 sys/kern/uipc_syscalls.c:653 sys_sendto(ffff8000216662b0,ffff8000216ff6e8,ffff8000216ff740) at sys_sendto+0x80 sys/kern/uipc_syscalls.c:520 syscall(ffff8000216ff7b0) at syscall+0x571 sys/arch/amd64/amd64/trap.c:587 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x386bd32eb10, count: -8 ddb> machine ddbcpu 1 No such command ddb> trace rtm_output(ffff800000b76800,ffff8000216ff360,ffff8000216ff2c0,8,0) at rtm_output+0x3d5 sys/net/rtsock.c:1035 route_output(fffffd8065ca6f00,fffffd806f5f0548,0,0) at route_output+0x6ba sys/net/rtsock.c:864 route_usrreq(fffffd806f5f0548,9,fffffd8065ca6f00,0,0,ffff8000216662b0) at route_usrreq+0x391 sys/net/rtsock.c:283 sosend(fffffd806f5f0548,0,ffff8000216ff570,0,0,0) at sosend+0x668 sys/kern/uipc_socket.c:573 sendit(ffff8000216662b0,3,ffff8000216ff650,0,ffff8000216ff740) at sendit+0x589 sys/kern/uipc_syscalls.c:653 sys_sendto(ffff8000216662b0,ffff8000216ff6e8,ffff8000216ff740) at sys_sendto+0x80 sys/kern/uipc_syscalls.c:520 syscall(ffff8000216ff7b0) at syscall+0x571 sys/arch/amd64/amd64/trap.c:587 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x386bd32eb10, count: -8