uvm_fault(0xfffffd80651df330, 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 * 53027 60020 0 0 0x4000000 0 syz-executor.0 rtm_output(ffff800000bba700,ffff8000216db360,ffff8000216db2c0,8,0) at rtm_output+0x3d5 sys/net/rtsock.c:1035 route_output(fffffd807422c200,fffffd806e4e3710,0,0) at route_output+0x6ba sys/net/rtsock.c:864 route_usrreq(fffffd806e4e3710,9,fffffd807422c200,0,0,ffff8000216587e8) at route_usrreq+0x391 sys/net/rtsock.c:283 sosend(fffffd806e4e3710,0,ffff8000216db570,0,0,0) at sosend+0x668 sys/kern/uipc_socket.c:573 sendit(ffff8000216587e8,3,ffff8000216db650,0,ffff8000216db740) at sendit+0x589 sys/kern/uipc_syscalls.c:653 sys_sendto(ffff8000216587e8,ffff8000216db6e8,ffff8000216db740) at sys_sendto+0x80 sys/kern/uipc_syscalls.c:520 syscall(ffff8000216db7b0) at syscall+0x571 sys/arch/amd64/amd64/trap.c:587 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xdde14744eb0, 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(0xfffffd80651df330, 0x58, 0, 1) -> e ddb> trace rtm_output(ffff800000bba700,ffff8000216db360,ffff8000216db2c0,8,0) at rtm_output+0x3d5 sys/net/rtsock.c:1035 route_output(fffffd807422c200,fffffd806e4e3710,0,0) at route_output+0x6ba sys/net/rtsock.c:864 route_usrreq(fffffd806e4e3710,9,fffffd807422c200,0,0,ffff8000216587e8) at route_usrreq+0x391 sys/net/rtsock.c:283 sosend(fffffd806e4e3710,0,ffff8000216db570,0,0,0) at sosend+0x668 sys/kern/uipc_socket.c:573 sendit(ffff8000216587e8,3,ffff8000216db650,0,ffff8000216db740) at sendit+0x589 sys/kern/uipc_syscalls.c:653 sys_sendto(ffff8000216587e8,ffff8000216db6e8,ffff8000216db740) at sys_sendto+0x80 sys/kern/uipc_syscalls.c:520 syscall(ffff8000216db7b0) at syscall+0x571 sys/arch/amd64/amd64/trap.c:587 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xdde14744eb0, count: -8 ddb> show registers rdi 0xffff8000216e4000 rsi 0x18b rbp 0xffff8000216db2b0 rbx 0x3 rdx 0xffff8000216e4000 rcx 0x18a rax 0xffffffff8233ff8b rtm_output+0x1fb r8 0x8 r9 0x1 r10 0x6894f56be68a42bd r11 0xb0e6983c7136b61d r12 0x8 r13 0x8 r14 0 r15 0xffff8000216db2c0 rip 0xffffffff82340165 rtm_output+0x3d5 cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff8000216db220 ss 0x10 rtm_output+0x3d5: movl 0x58(%r14),%edi ddb> show proc PROC (syz-executor.0) pid=53027 stat=onproc flags process=0 proc=4000000 pri=32, usrpri=75, nice=20 forw=0xffffffffffffffff, list=0xffff800021658fc8,0xffff800021658d38 process=0xffff800021668400 user=0xffff8000216d6000, vmspace=0xfffffd80651df330 estcpu=36, cpticks=0, pctcpu=0.0 user=0, sys=0, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 35831 119719 84918 0 2 0 syz-executor.1 35831 261843 84918 0 3 0x4000080 fsleep syz-executor.1 60020 473722 83175 0 2 0 syz-executor.0 *60020 53027 83175 0 7 0x4000000 syz-executor.0 86894 34423 0 0 3 0x14200 bored sosplice 84918 281005 8634 0 3 0x82 nanoslp syz-executor.1 83175 476959 8634 0 3 0x82 nanoslp syz-executor.0 8634 6326 83587 0 3 0x82 thrsleep syz-fuzzer 8634 136613 83587 0 3 0x4000082 thrsleep syz-fuzzer 8634 516494 83587 0 3 0x4000082 thrsleep syz-fuzzer 8634 71573 83587 0 3 0x4000082 thrsleep syz-fuzzer 8634 276954 83587 0 3 0x4000082 thrsleep syz-fuzzer 8634 50118 83587 0 3 0x4000082 thrsleep syz-fuzzer 8634 198792 83587 0 3 0x4000082 kqread syz-fuzzer 83587 197630 9464 0 3 0x10008a sigsusp ksh 9464 416512 22018 0 3 0x9a select sshd 74736 298245 1 0 3 0x100083 ttyin getty 22018 468425 1 0 3 0x88 select sshd 33806 228593 62957 73 3 0x100090 kqread syslogd 62957 242362 1 0 3 0x100082 netio syslogd 44331 460489 1 0 3 0x100080 kqread resolvd 47160 463213 61263 77 3 0x100092 kqread dhcpleased 42701 480874 61263 77 3 0x100092 kqread dhcpleased 61263 10769 1 0 3 0x80 kqread dhcpleased 76823 113158 0 0 3 0x14200 bored smr 25341 428438 0 0 2 0x14200 zerothread 18122 169654 0 0 3 0x14200 aiodoned aiodoned 58869 235622 0 0 3 0x14200 syncer update 77514 180318 0 0 3 0x14200 cleaner cleaner 61911 293114 0 0 3 0x14200 reaper reaper 67675 321844 0 0 3 0x14200 pgdaemon pagedaemon 38407 303398 0 0 3 0x14200 bored crynlk 4777 323383 0 0 3 0x14200 bored crypto 92344 504597 0 0 3 0x14200 bored viomb 48121 41847 0 0 3 0x40014200 acpi0 acpi0 71693 511886 0 0 3 0x14200 bored softnet 7483 276380 0 0 3 0x14200 bored systqmp 11430 267848 0 0 3 0x14200 bored systq 12238 300834 0 0 3 0x40014200 bored softclock 47671 54778 0 0 3 0x40014200 idle0 1 118947 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 10118 6353K 6992K 78643K 12234 0 pcb 13 8K 8K 78643K 76 0 rtable 107 3K 3K 78643K 197 0 ifaddr 48 11K 11K 78643K 69 0 counters 21 16K 16K 78643K 25 0 ioctlops 0 0K 2K 78643K 77 0 iov 0 0K 8K 78643K 25 0 mount 1 1K 1K 78643K 1 0 log 0 0K 0K 78643K 5 0 vnodes 1224 77K 77K 78643K 1572 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 1K 78643K 2 0 VM map 2 0K 0K 78643K 2 0 sem 12 0K 0K 78643K 198 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1697 195K 286K 78643K 12598 0 file desc 6 17K 25K 78643K 1096 0 sigio 0 0K 0K 78643K 46 0 proc 59 55K 71K 78643K 285 0 subproc 32 2K 2K 78643K 34 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 0 0K 0K 78643K 89 0 in_multi 33 2K 2K 78643K 77 0 ether_multi 1 0K 0K 78643K 16 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 43 201K 201K 78643K 43 0 exec 0 0K 2K 78643K 393 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 251 94K 94K 78643K 14496 0 UVM aobj 16 2K 2K 78643K 16 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 64 0 NDP 7 0K 0K 78643K 15 0 temp 110 4201K 4265K 78643K 4685 0 kqueue 10 14K 22K 78643K 50 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 45 0 41 1 0 1 1 0 8 0 rtentry 112 45 0 1 2 0 2 2 0 8 0 unpcb 120 318 0 305 1 0 1 1 0 8 0 syncache 296 17 0 17 3 2 1 1 0 8 1 tcpqe 32 36 0 36 2 1 1 1 0 8 1 tcpcb 736 198 0 192 4 2 2 3 0 8 0 arp 88 6 0 0 1 0 1 1 0 8 0 ipq 40 4 0 4 1 1 0 1 0 8 0 ipqe 40 8 0 8 1 1 0 1 0 8 0 inpcb 304 463 0 455 4 2 2 2 0 8 1 nd6 48 6 0 0 1 0 1 1 0 8 0 kcovpl 48 2 0 0 1 0 1 1 0 8 0 pfosfp 40 5 0 1 1 0 1 1 0 8 0 pfosfpen 112 5 0 0 1 0 1 1 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 189 0 0 12 0 12 12 0 8 0 art_table 32 190 0 0 2 0 2 2 0 8 0 art_node 16 44 0 4 1 0 1 1 0 8 0 sysvmsgpl 40 45 0 23 1 0 1 1 0 8 0 semupl 112 4 0 4 1 1 0 1 0 8 0 semapl 112 191 0 181 1 0 1 1 0 8 0 shmpl 112 13 0 0 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 2785 0 1384 88 0 88 88 0 8 0 ffsino 240 2785 0 1384 84 1 83 83 0 8 0 nchpl 144 4279 0 2666 60 0 60 60 0 8 0 uvmvnodes 72 3073 0 0 56 0 56 56 0 8 0 vnodes 224 3073 0 0 181 0 181 181 0 8 0 namei 1024 10598 0 10598 2 1 1 1 0 8 1 vcpupl 1984 5 0 0 1 0 1 1 0 8 0 vmpool 528 10 0 5 2 1 1 1 0 8 0 scxspl 216 12012 0 12012 9 8 1 8 0 8 1 plimitpl 152 40 0 32 1 0 1 1 0 8 0 sigapl 424 1327 0 1294 4 0 4 4 0 8 0 futexpl 56 10543 0 10542 1 0 1 1 0 8 0 knotepl 112 219 0 181 2 0 2 2 0 8 0 kqueuepl 184 625 0 619 1 0 1 1 0 8 0 pipepl 304 139 0 129 1 0 1 1 0 8 0 fdescpl 432 1311 0 1294 3 1 2 3 0 8 0 filepl 120 4787 0 4678 5 1 4 4 0 8 0 lockfpl 104 56 0 54 1 0 1 1 0 8 0 lockfspl 48 26 0 24 1 0 1 1 0 8 0 sessionpl 144 17 0 7 1 0 1 1 0 8 0 pgrppl 48 17 0 7 1 0 1 1 0 8 0 ucredpl 96 428 0 418 1 0 1 1 0 8 0 zombiepl 144 1294 0 1294 2 1 1 1 0 8 1 processpl 1008 1327 0 1294 6 1 5 5 0 8 0 procpl 672 2533 0 2492 5 1 4 4 0 8 0 sosppl 168 26 0 26 3 3 0 1 0 8 0 sockpl 448 827 0 802 7 3 4 4 0 8 1 mcl64k 65536 61 0 61 4 3 1 1 0 8 1 mcl16k 16384 42 0 42 3 2 1 1 0 8 1 mcl12k 12288 31 0 31 4 4 0 1 0 8 0 mcl9k 9216 8 0 8 2 2 0 1 0 8 0 mcl8k 8192 24 0 24 4 3 1 1 0 8 1 mcl4k 4096 49 0 49 6 5 1 1 0 8 1 mcl2k 2048 239921 0 239865 32 16 16 16 0 8 6 mtagpl 96 125 0 3 4 1 3 3 0 8 0 mbufpl 256 412033 0 411557 39 5 34 34 0 8 1 bufpl 280 4488 0 131 312 0 312 312 0 8 0 anonpl 24 328575 0 300692 170 1 169 169 0 188 1 amapchunkpl 152 33921 0 33086 34 1 33 33 0 158 0 amappl16 200 3074 0 2000 57 0 57 57 0 8 0 amappl14 184 1 0 1 1 1 0 1 0 8 0 amappl13 176 56 0 54 1 0 1 1 0 8 0 amappl12 168 7 0 5 1 0 1 1 0 8 0 amappl11 160 41 0 29 1 0 1 1 0 8 0 amappl10 152 557 0 550 1 0 1 1 0 8 0 amappl9 144 759 0 754 1 0 1 1 0 8 0 amappl8 136 352 0 313 2 0 2 2 0 8 0 amappl7 128 67 0 54 1 0 1 1 0 8 0 amappl6 120 658 0 644 1 0 1 1 0 8 0 amappl5 112 1801 0 1784 1 0 1 1 0 8 0 amappl4 104 559 0 534 1 0 1 1 0 8 0 amappl3 96 73 0 72 1 0 1 1 0 8 0 amappl2 88 476 0 422 2 0 2 2 0 8 0 amappl1 80 24830 0 24404 14 4 10 12 0 8 0 amappl 88 14079 0 13894 5 0 5 5 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 15 0 0 1 0 1 1 0 8 0 uaddrrnd 24 1321 0 1299 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 1321 0 1299 1 0 1 1 0 8 0 vmmpekpl 168 11053 0 11028 2 0 2 2 0 8 0 vmmpepl 168 147338 0 144878 142 34 108 136 0 357 1 vmsppl 272 1320 0 1299 4 2 2 2 0 8 0 rwobjpl 24 27836 0 26016 12 0 12 12 0 8 1 pdppl 4096 2649 0 2603 74 28 46 47 0 8 0 pvpl 32 762111 0 730789 262 7 255 255 0 265 2 pmappl 192 1320 0 1299 2 0 2 2 0 8 0 extentpl 40 58 0 40 1 0 1 1 0 8 0 phpool 112 370 0 73 9 0 9 9 0 8 0 ddb> machine ddbcpu 0 No such command ddb> trace rtm_output(ffff800000bba700,ffff8000216db360,ffff8000216db2c0,8,0) at rtm_output+0x3d5 sys/net/rtsock.c:1035 route_output(fffffd807422c200,fffffd806e4e3710,0,0) at route_output+0x6ba sys/net/rtsock.c:864 route_usrreq(fffffd806e4e3710,9,fffffd807422c200,0,0,ffff8000216587e8) at route_usrreq+0x391 sys/net/rtsock.c:283 sosend(fffffd806e4e3710,0,ffff8000216db570,0,0,0) at sosend+0x668 sys/kern/uipc_socket.c:573 sendit(ffff8000216587e8,3,ffff8000216db650,0,ffff8000216db740) at sendit+0x589 sys/kern/uipc_syscalls.c:653 sys_sendto(ffff8000216587e8,ffff8000216db6e8,ffff8000216db740) at sys_sendto+0x80 sys/kern/uipc_syscalls.c:520 syscall(ffff8000216db7b0) at syscall+0x571 sys/arch/amd64/amd64/trap.c:587 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xdde14744eb0, count: -8 ddb> machine ddbcpu 1 No such command ddb> trace rtm_output(ffff800000bba700,ffff8000216db360,ffff8000216db2c0,8,0) at rtm_output+0x3d5 sys/net/rtsock.c:1035 route_output(fffffd807422c200,fffffd806e4e3710,0,0) at route_output+0x6ba sys/net/rtsock.c:864 route_usrreq(fffffd806e4e3710,9,fffffd807422c200,0,0,ffff8000216587e8) at route_usrreq+0x391 sys/net/rtsock.c:283 sosend(fffffd806e4e3710,0,ffff8000216db570,0,0,0) at sosend+0x668 sys/kern/uipc_socket.c:573 sendit(ffff8000216587e8,3,ffff8000216db650,0,ffff8000216db740) at sendit+0x589 sys/kern/uipc_syscalls.c:653 sys_sendto(ffff8000216587e8,ffff8000216db6e8,ffff8000216db740) at sys_sendto+0x80 sys/kern/uipc_syscalls.c:520 syscall(ffff8000216db7b0) at syscall+0x571 sys/arch/amd64/amd64/trap.c:587 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xdde14744eb0, count: -8