uvm_fault(0xffffffff839ff588, 0xffff80000161704a, 0, 1) -> e kernel: page fault trap, code=0 Stopped at arp_rtrequest+0x6a4: movzwl 0xc(%rcx,%rbx,1),%ecx TID PID UID PRFLAGS PFLAGS CPU COMMAND *390566 99823 0 0 0x4000000 0 syz-executor arp_rtrequest(ffff8000002a3058,1,fffff8006fc0c6e8) at arp_rtrequest+0x6a4 arprequest sys/netinet/if_ether.c:325 [inline] arp_rtrequest(ffff8000002a3058,1,fffff8006fc0c6e8) at arp_rtrequest+0x6a4 sys/netinet/if_ether.c:226 rtrequest(1,ffff8000384e7160,0,ffff8000384e70d0,16) at rtrequest+0xdc1 sys/net/route.c:1114 rtm_output(ffff800000c5de00,ffff8000384e7208,ffff8000384e7160,0,16) at rtm_output+0x91a sys/net/rtsock.c:956 route_output(fffff8006dc14800,ffff800010fdc698) at route_output+0xa6a sys/net/rtsock.c:862 route_send(ffff800010fdc698,fffff8006dc14800,0,0) at route_send+0xd7 sys/net/rtsock.c:322 sosend(ffff800010fdc698,0,ffff8000384e73b8,0,0,80c) at sosend+0x804 sys/kern/uipc_socket.c:-1 sendit(ffff80002a7794d0,3,ffff8000384e74b0,80c,ffff8000384e7550) at sendit+0x5a5 sys/kern/uipc_syscalls.c:785 sys_sendto(ffff80002a7794d0,ffff8000384e7600,ffff8000384e7550) at sys_sendto+0x8d sys/kern/uipc_syscalls.c:563 syscall(ffff8000384e7600) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff8000384e7600) at syscall+0x962 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xa0eb3d1f740, count: 5 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(0xffffffff839ff588, 0xffff80000161704a, 0, 1) -> e ddb> show kasan No such command ddb> trace arp_rtrequest(ffff8000002a3058,1,fffff8006fc0c6e8) at arp_rtrequest+0x6a4 arprequest sys/netinet/if_ether.c:325 [inline] arp_rtrequest(ffff8000002a3058,1,fffff8006fc0c6e8) at arp_rtrequest+0x6a4 sys/netinet/if_ether.c:226 rtrequest(1,ffff8000384e7160,0,ffff8000384e70d0,16) at rtrequest+0xdc1 sys/net/route.c:1114 rtm_output(ffff800000c5de00,ffff8000384e7208,ffff8000384e7160,0,16) at rtm_output+0x91a sys/net/rtsock.c:956 route_output(fffff8006dc14800,ffff800010fdc698) at route_output+0xa6a sys/net/rtsock.c:862 route_send(ffff800010fdc698,fffff8006dc14800,0,0) at route_send+0xd7 sys/net/rtsock.c:322 sosend(ffff800010fdc698,0,ffff8000384e73b8,0,0,80c) at sosend+0x804 sys/kern/uipc_socket.c:-1 sendit(ffff80002a7794d0,3,ffff8000384e74b0,80c,ffff8000384e7550) at sendit+0x5a5 sys/kern/uipc_syscalls.c:785 sys_sendto(ffff80002a7794d0,ffff8000384e7600,ffff8000384e7550) at sys_sendto+0x8d sys/kern/uipc_syscalls.c:563 syscall(ffff8000384e7600) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff8000384e7600) at syscall+0x962 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xa0eb3d1f740, count: -10 ddb> show registers rdi 0xffff8000360d0000 rsi 0x5c1 rbp 0xffff8000384e6fb0 rbx 0xde rdx 0xffff8000360d0000 rcx 0xffff800001616f60 rax 0xfffff8006dd96ae0 r8 0x1000 __ALIGN_SIZE r9 0 r10 0x4c6c7e958fed251c r11 0x9dd7643124e03d06 r12 0x24 r13 0xfffff8006dd96a00 r14 0xfffff8006fc0c6e8 r15 0xffff8000002a3058 rip 0xffffffff8125f604 arp_rtrequest+0x6a4 cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff8000384e6f30 ss 0x10 arp_rtrequest+0x6a4: movzwl 0xc(%rcx,%rbx,1),%ecx ddb> show proc PROC (syz-executor) tid=390566 pid=99823 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=0xffff80002a778a70,0xffffffff839fe518 process=0xffff80002a79ed10 user=0xffff8000384e2000, vmspace=0xfffff8006d1885d0 estcpu=36, cpticks=1, pctcpu=0.0, user=0, sys=1, intr=0 ddb> ps PID TID PPID UID S PRLAGS PFLAGS WAIT COMMAND 99823 347989 96671 0 2 0 0 syz-executor *99823 390566 96671 0 7 0 0x4000000 syz-executor 50159 421370 1 0 3 0x2 0x80 nanoslp getty 24943 32051 66056 0 3 0 0x80 fsleep syz-executor 24943 63089 66056 0 3 0 0x4000000 smrbar syz-executor 62101 204770 39784 0 3 0 0x80 fsleep syz-executor 62101 195133 39784 0 3 0 0x4000080 kqsel syz-executor 40252 169038 16058 0 3 0 0x80 fsleep syz-executor 40252 162260 16058 0 3 0 0x4000080 fsleep syz-executor 40252 144844 16058 0 3 0 0x4000080 fsleep syz-executor 40252 307102 16058 0 3 0 0x4000080 kqsel syz-executor 55408 439537 20364 0 3 0 0x80 fsleep syz-executor 55408 420847 20364 0 3 0 0x4000080 kqsel syz-executor 36936 165152 33047 0 3 0 0x80 fsleep syz-executor 36936 252602 33047 0 3 0 0x4000080 lockf syz-executor 11943 326827 0 0 3 0x14000 0x280 nfsidl nfsio 59904 84208 0 0 3 0x14000 0x280 nfsidl nfsio 64901 427370 0 0 3 0x14000 0x280 nfsidl nfsio 4109 207738 0 0 3 0x14000 0x280 nfsidl nfsio 50707 523415 0 0 3 0x14000 0x280 nfsidl nfsio 63298 254114 0 0 3 0x14000 0x280 nfsidl nfsio 14590 157462 0 0 3 0x14000 0x280 nfsidl nfsio 23980 217155 0 0 3 0x14000 0x280 nfsidl nfsio 56235 288024 0 0 3 0x14000 0x280 nfsidl nfsio 5437 461442 0 0 3 0x14000 0x280 nfsidl nfsio 40191 234328 0 0 3 0x14000 0x280 nfsidl nfsio 90577 299423 0 0 3 0x14000 0x280 nfsidl nfsio 82480 491022 0 0 3 0x14000 0x280 nfsidl nfsio 92477 467458 0 0 3 0x14000 0x280 nfsidl nfsio 35404 307416 0 0 3 0x14000 0x280 nfsidl nfsio 77841 327350 0 0 3 0x14000 0x280 nfsidl nfsio 82714 156831 0 0 3 0x14000 0x280 nfsidl nfsio 92178 485276 0 0 3 0x14000 0x280 nfsidl nfsio 37622 15488 0 0 3 0x14000 0x280 nfsidl nfsio 59818 197680 0 0 3 0x14000 0x280 nfsidl nfsio 20364 205510 38289 0 3 0x2 0x80 nanoslp syz-executor 96671 503860 38289 0 3 0x2 0x80 nanoslp syz-executor 66056 412407 38289 0 2 0x2 0xc80 syz-executor 39784 104046 38289 0 3 0x2 0x80 nanoslp syz-executor 16058 361579 38289 0 3 0x2 0x80 nanoslp syz-executor 23581 430316 38289 0 3 0x2 0x80 wait syz-executor 33047 25103 38289 0 3 0x2 0x80 nanoslp syz-executor 74895 147624 38289 0 2 0x2 0 syz-executor 38289 497703 1 0 3 0x2 0x80 kqread syz-executor 50074 10503 0 0 3 0x14000 0x200 bored smr 2075 148518 0 0 2 0x14000 0x200 zerothread 16656 321786 0 0 3 0x14000 0x200 aiodoned aiodoned 30841 202855 0 0 3 0x14000 0x200 syncer update 71878 466952 0 0 3 0x14000 0x200 cleaner cleaner 84978 366989 0 0 3 0x14000 0x200 reaper reaper 90134 187412 0 0 3 0x14000 0x200 pgdaemon pagedaemon 47224 417884 0 0 3 0x14000 0x200 bored viomb 93203 421951 0 0 3 0x14000 0x40000200 acpi0 acpi0 30044 515137 0 0 3 0x14000 0x200 bored softnet0 83591 82938 0 0 3 0x14000 0x200 bored systqmp 83815 45677 0 0 3 0x14000 0x200 bored systq 50600 16946 0 0 3 0x14000 0x40000200 tmoslp softclock 65751 202281 0 0 3 0x14000 0x40000200 idle0 1 111957 0 0 3 0x2 0x80 wait init 0 0 -1 0 3 0x10010000 0x200 scheduler swapper ddb> show all locks No such command ddb> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 11044 12129K 12566K 166960K 12851 0 pcb 18 14K 16K 166960K 215 0 rtable 232 9K 10K 166960K 522 0 pf 35 14K 17K 166960K 93 0 ifaddr 39 6K 8K 166960K 61 0 ifgroup 54 2K 2K 166960K 99 0 sysctl 3 1K 9K 166960K 8 0 counters 34 17K 18K 166960K 83 0 ioctlops 0 0K 4K 166960K 227 0 iov 0 0K 12K 166960K 16 0 mount 1 1K 1K 166960K 1 0 log 0 0K 8K 166960K 5 0 vnodes 1358 85K 86K 166960K 1802 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 5K 166960K 9 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 0K 166960K 28 0 dirhash 12 2K 2K 166960K 15 0 ACPI 1734 201K 291K 166960K 11964 0 file desc 16 61K 89K 166960K 500 0 sigio 0 0K 0K 166960K 3 0 proc 20 25K 83K 166960K 565 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 24 0 in_multi 87 5K 6K 166960K 113 0 ether_multi 1 0K 0K 166960K 2 0 mrt 2 0K 0K 166960K 15 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 91 413K 413K 166960K 91 0 exec 0 0K 1K 166960K 532 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 131 82K 182K 166960K 6029 0 UVM aobj 18 2K 2K 166960K 18 0 pinsyscall 19 38K 92K 166960K 1604 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 11 0 NDP 12 0K 2K 166960K 40 0 temp 45 9112K 9176K 166960K 11357 0 kqueue 1 2K 30K 166960K 97 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 63 0 61 1 0 1 1 0 8 0 rtentry 136 128 0 36 4 0 4 4 0 8 0 unpcb 144 371 0 371 6 0 6 6 0 8 6 syncache 336 11 0 11 2 1 1 1 0 8 1 tcpqe 32 4 0 4 2 1 1 1 0 8 1 tcpcb 736 211 0 205 8 1 7 7 0 8 5 arp 96 23 0 5 1 0 1 1 0 8 0 ipq 40 3 0 0 1 0 1 1 0 8 0 ipqe 40 3 0 0 1 0 1 1 0 8 0 inpcb 328 617 0 609 13 1 12 12 0 8 10 ip6q 72 2 0 0 1 0 1 1 0 8 0 ip6af 40 3 0 1 1 0 1 1 0 8 0 nd6 112 26 0 4 1 0 1 1 0 8 0 pkpcb 40 6 0 6 1 0 1 1 0 8 1 kcovpl 48 8 0 0 1 0 1 1 0 8 0 ppxss 1072 42 0 42 1 0 1 1 0 8 1 pppxif 1416 1 0 1 1 0 1 1 0 8 1 pfstscr 40 11 0 2 1 0 1 1 0 8 0 pfrktable 1344 6 0 6 1 0 1 1 0 8 1 pfanchor 1288 4 0 4 1 0 1 1 0 8 1 pfstitem 24 9 0 0 1 0 1 1 0 8 0 pfstkey 128 13 0 4 1 0 1 1 0 8 0 pfstate 384 7 0 2 1 0 1 1 0 8 0 pfrule 1360 9 0 9 2 1 1 1 0 8 1 art_heap8 4096 2 0 0 2 0 2 2 0 8 0 art_heap4 256 526 0 109 30 0 30 30 0 8 3 art_table 40 528 0 109 5 0 5 5 0 8 0 art_node 32 127 0 45 1 0 1 1 0 8 0 sysvmsgpl 40 3 0 3 2 1 1 1 0 8 1 semupl 112 1 0 1 1 0 1 1 0 8 1 semapl 72 26 0 16 1 0 1 1 0 8 0 shmpl 112 15 0 0 1 0 1 1 0 8 0 dirhash 1024 19 0 2 3 0 3 3 0 8 0 dino2pl 256 2283 0 832 92 0 92 92 0 8 0 ffsino 256 2283 0 832 92 0 92 92 0 8 0 nchpl 144 3090 0 1395 64 0 64 64 0 8 0 rtmask 32 4 0 4 2 1 1 1 0 8 1 vnodes 216 2628 0 0 146 0 146 146 0 8 0 namei 1024 10460 0 10459 1 0 1 1 0 8 0 pfiaddrpl 120 2 0 2 1 0 1 1 0 8 1 kstatmem 264 49 0 24 2 0 2 2 0 8 0 scsiplug 72 1 0 1 1 0 1 1 0 8 1 scxspl 216 11802 0 11802 10 2 8 8 1 8 8 plimitpl 152 103 0 93 1 0 1 1 0 8 0 sigapl 424 817 0 765 8 0 8 8 0 8 0 knotepl 120 16528 0 16511 26 16 10 17 0 8 8 kqueuepl 184 123 0 119 1 0 1 1 0 8 0 pipepl 304 142 0 115 3 0 3 3 0 8 0 fdescpl 448 783 0 764 5 1 4 5 0 8 0 filepl 120 4777 0 4610 12 0 12 12 0 8 4 lockfpl 104 138 0 136 1 0 1 1 0 8 0 lockfspl 48 59 0 58 1 0 1 1 0 8 0 sessionpl 144 46 0 44 1 0 1 1 0 8 0 pgrppl 48 57 0 47 1 0 1 1 0 8 0 ucredpl 104 774 0 771 1 0 1 1 0 8 0 zombiepl 144 766 0 765 1 0 1 1 0 8 0 processpl 1152 817 0 765 5 0 5 5 0 8 0 procpl 664 1380 0 1320 7 0 7 7 0 8 0 sosppl 176 3 0 3 1 0 1 1 0 8 1 sockpl 552 1071 0 1061 17 5 12 15 0 8 9 mcl64k 65536 24 0 23 2 1 1 1 0 8 0 mcl8k 8192 8 0 8 2 1 1 1 0 8 1 mcl4k 4096 2987 0 2933 13 5 8 13 0 8 0 mcl2k 2048 530 0 527 3 0 3 3 0 8 2 mextrefs 64 241 0 238 1 0 1 1 0 8 0 mtagpl 96 5 0 5 2 1 1 1 0 8 1 mbufpl 256 8369 0 8177 18 1 17 17 0 8 2 bufpl 272 3957 0 103 257 0 257 257 0 8 0 anonpl 24 123042 0 121476 67 10 57 57 0 187 36 amapchunkpl 152 19079 0 18720 39 6 33 33 0 158 14 amappl16 200 1849 0 1826 16 5 11 14 0 8 8 amappl15 192 85 0 85 2 1 1 1 0 8 1 amappl14 184 413 0 413 1 0 1 1 0 8 1 amappl13 176 126 0 125 1 0 1 1 0 8 0 amappl12 168 1021 0 1003 2 0 2 2 0 8 0 amappl11 160 6 0 6 1 1 0 1 0 8 0 amappl10 152 58 0 58 1 0 1 1 0 8 1 amappl9 144 270 0 270 1 1 0 1 0 8 0 amappl8 136 121 0 121 1 0 1 1 0 8 1 amappl7 128 143 0 141 1 0 1 1 0 8 0 amappl6 120 151 0 151 1 0 1 1 0 8 1 amappl5 112 102 0 101 1 0 1 1 0 8 0 amappl4 104 271 0 268 1 0 1 1 0 8 0 amappl3 96 3431 0 3367 3 0 3 3 0 8 0 amappl2 88 917 0 892 2 0 2 2 0 8 0 amappl1 80 11699 0 11582 13 1 12 13 0 8 7 amappl 88 5270 0 5153 5 0 5 5 0 92 1 uvmvnodes 80 108 0 0 3 0 3 3 0 8 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 19 0 18 1 0 1 1 0 8 0 aobjpl 72 17 0 0 1 0 1 1 0 8 0 uaddrrnd 24 783 0 764 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 783 0 764 1 0 1 1 0 8 0 vmmpekpl 168 7881 0 7850 2 0 2 2 0 8 0 vmmpepl 168 56816 0 55974 90 1 89 89 0 357 49 vmsppl 368 782 0 764 4 1 3 4 0 8 0 rwobjpl 40 17837 0 17399 14 1 13 13 0 8 2 pdppl 4096 1572 0 1528 100 34 66 78 0 8 22 pvpl 32 341412 0 335697 150 23 127 127 0 265 65 pmappl 216 782 0 764 2 0 2 2 0 8 0 extentpl 40 46 0 28 1 0 1 1 0 8 0 phpool 112 639 0 49 17 0 17 17 0 8 0 ddb> machine ddbcpu 0 No such command ddb> trace arp_rtrequest(ffff8000002a3058,1,fffff8006fc0c6e8) at arp_rtrequest+0x6a4 arprequest sys/netinet/if_ether.c:325 [inline] arp_rtrequest(ffff8000002a3058,1,fffff8006fc0c6e8) at arp_rtrequest+0x6a4 sys/netinet/if_ether.c:226 rtrequest(1,ffff8000384e7160,0,ffff8000384e70d0,16) at rtrequest+0xdc1 sys/net/route.c:1114 rtm_output(ffff800000c5de00,ffff8000384e7208,ffff8000384e7160,0,16) at rtm_output+0x91a sys/net/rtsock.c:956 route_output(fffff8006dc14800,ffff800010fdc698) at route_output+0xa6a sys/net/rtsock.c:862 route_send(ffff800010fdc698,fffff8006dc14800,0,0) at route_send+0xd7 sys/net/rtsock.c:322 sosend(ffff800010fdc698,0,ffff8000384e73b8,0,0,80c) at sosend+0x804 sys/kern/uipc_socket.c:-1 sendit(ffff80002a7794d0,3,ffff8000384e74b0,80c,ffff8000384e7550) at sendit+0x5a5 sys/kern/uipc_syscalls.c:785 sys_sendto(ffff80002a7794d0,ffff8000384e7600,ffff8000384e7550) at sys_sendto+0x8d sys/kern/uipc_syscalls.c:563 syscall(ffff8000384e7600) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff8000384e7600) at syscall+0x962 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xa0eb3d1f740, count: -10 ddb> machine ddbcpu 1 No such command ddb> trace arp_rtrequest(ffff8000002a3058,1,fffff8006fc0c6e8) at arp_rtrequest+0x6a4 arprequest sys/netinet/if_ether.c:325 [inline] arp_rtrequest(ffff8000002a3058,1,fffff8006fc0c6e8) at arp_rtrequest+0x6a4 sys/netinet/if_ether.c:226 rtrequest(1,ffff8000384e7160,0,ffff8000384e70d0,16) at rtrequest+0xdc1 sys/net/route.c:1114 rtm_output(ffff800000c5de00,ffff8000384e7208,ffff8000384e7160,0,16) at rtm_output+0x91a sys/net/rtsock.c:956 route_output(fffff8006dc14800,ffff800010fdc698) at route_output+0xa6a sys/net/rtsock.c:862 route_send(ffff800010fdc698,fffff8006dc14800,0,0) at route_send+0xd7 sys/net/rtsock.c:322 sosend(ffff800010fdc698,0,ffff8000384e73b8,0,0,80c) at sosend+0x804 sys/kern/uipc_socket.c:-1 sendit(ffff80002a7794d0,3,ffff8000384e74b0,80c,ffff8000384e7550) at sendit+0x5a5 sys/kern/uipc_syscalls.c:785 sys_sendto(ffff80002a7794d0,ffff8000384e7600,ffff8000384e7550) at sys_sendto+0x8d sys/kern/uipc_syscalls.c:563 syscall(ffff8000384e7600) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff8000384e7600) at syscall+0x962 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xa0eb3d1f740, count: -10 ddb>