uvm_fault(0xffffffff839113a0, 0xffff80000149a00a, 0, 1) -> e kernel: page fault trap, code=0 Stopped at arp_rtrequest+0x657: movzwl 0xc(%rcx,%rbx,1),%ecx TID PID UID PRFLAGS PFLAGS CPU COMMAND *437415 37762 0 0 0x4000000 0 syz-executor arp_rtrequest(ffff800000039058,1,fffffd806bfa2788) at arp_rtrequest+0x657 arprequest sys/netinet/if_ether.c:279 [inline] arp_rtrequest(ffff800000039058,1,fffffd806bfa2788) at arp_rtrequest+0x657 sys/netinet/if_ether.c:182 rtrequest(1,ffff80003a95b760,0,ffff80003a95b6d0,16) at rtrequest+0xf08 sys/net/route.c:1114 rtm_output(ffff800001497200,ffff80003a95b808,ffff80003a95b760,0,16) at rtm_output+0x91a sys/net/rtsock.c:970 route_output(fffffd8074e60d00,ffff800001418ad0) at route_output+0xa2b sys/net/rtsock.c:875 route_send(ffff800001418ad0,fffffd8074e60d00,0,0) at route_send+0xd7 sys/net/rtsock.c:339 sosend(ffff800001418ad0,0,ffff80003a95b9b8,0,0,808) at sosend+0x804 sys/kern/uipc_socket.c:-1 sendit(ffff80002a7d8fb0,3,ffff80003a95bab0,808,ffff80003a95bb50) at sendit+0x5a5 sys/kern/uipc_syscalls.c:785 sys_sendto(ffff80002a7d8fb0,ffff80003a95bc00,ffff80003a95bb50) at sys_sendto+0x8d sys/kern/uipc_syscalls.c:563 syscall(ffff80003a95bc00) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003a95bc00) at syscall+0x962 sys/arch/amd64/amd64/trap.c:748 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x3a336196de0, 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(0xffffffff839113a0, 0xffff80000149a00a, 0, 1) -> e ddb> trace arp_rtrequest(ffff800000039058,1,fffffd806bfa2788) at arp_rtrequest+0x657 arprequest sys/netinet/if_ether.c:279 [inline] arp_rtrequest(ffff800000039058,1,fffffd806bfa2788) at arp_rtrequest+0x657 sys/netinet/if_ether.c:182 rtrequest(1,ffff80003a95b760,0,ffff80003a95b6d0,16) at rtrequest+0xf08 sys/net/route.c:1114 rtm_output(ffff800001497200,ffff80003a95b808,ffff80003a95b760,0,16) at rtm_output+0x91a sys/net/rtsock.c:970 route_output(fffffd8074e60d00,ffff800001418ad0) at route_output+0xa2b sys/net/rtsock.c:875 route_send(ffff800001418ad0,fffffd8074e60d00,0,0) at route_send+0xd7 sys/net/rtsock.c:339 sosend(ffff800001418ad0,0,ffff80003a95b9b8,0,0,808) at sosend+0x804 sys/kern/uipc_socket.c:-1 sendit(ffff80002a7d8fb0,3,ffff80003a95bab0,808,ffff80003a95bb50) at sendit+0x5a5 sys/kern/uipc_syscalls.c:785 sys_sendto(ffff80002a7d8fb0,ffff80003a95bc00,ffff80003a95bb50) at sys_sendto+0x8d sys/kern/uipc_syscalls.c:563 syscall(ffff80003a95bc00) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003a95bc00) at syscall+0x962 sys/arch/amd64/amd64/trap.c:748 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x3a336196de0, count: -10 ddb> show registers rdi 0x20 rsi 0x90 rbp 0xffff80003a95b5b0 rbx 0xde rdx 0 rcx 0xffff800001499f20 rax 0xfffffd8074e607e0 r8 0x1000 __ALIGN_SIZE r9 0 r10 0x931c3dce2a25b684 r11 0xa2af999c19354e98 r12 0x18 r13 0xfffffd8074e60700 r14 0xfffffd806bfa2788 r15 0xffff800000039058 rip 0xffffffff8281f777 arp_rtrequest+0x657 cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff80003a95b530 ss 0x10 arp_rtrequest+0x657: movzwl 0xc(%rcx,%rbx,1),%ecx ddb> show proc PROC (syz-executor) tid=437415 pid=37762 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=0xffff80002a7d9a10,0xffff80002a7d87f8 process=0xffff80002cd30498 user=0xffff80003a956000, vmspace=0xfffffd806eb64e68 estcpu=0, cpticks=1, pctcpu=0.0, user=0, sys=1, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 45813 423534 28650 0 2 0 syz-executor 84513 85374 62944 0 2 0x2 sh 69413 271771 24462 0 2 0 syz-executor 69413 491533 24462 0 2 0x4000000 syz-executor 37762 25996 56805 0 2 0 syz-executor *37762 437415 56805 0 7 0x4000000 syz-executor 3088 355633 25793 0 2 0 syz-executor 3088 83221 25793 0 3 0x4000080 fsleep syz-executor 52514 209192 41960 0 2 0 syz-executor 52514 269476 41960 0 3 0x4000080 fsleep syz-executor 56295 75540 76872 0 3 0x82 piperd syz-executor 24462 364929 76872 0 3 0x82 nanoslp syz-executor 55343 499066 76872 0 3 0x82 piperd syz-executor 28650 395130 76872 0 2 0x2 syz-executor 25793 306894 76872 0 3 0x82 nanoslp syz-executor 56805 301900 76872 0 3 0x82 nanoslp syz-executor 41960 130807 76872 0 3 0x82 nanoslp syz-executor 62944 156470 76872 0 3 0x82 wait syz-executor 76872 80159 58545 0 2 0x2 syz-executor 58545 266116 77446 0 3 0x10008a sigsusp ksh 77446 489900 30526 0 3 0x98 kqread sshd-session 30526 59771 41010 0 3 0x92 kqread sshd-session 3586 304471 1 0 3 0x100083 ttyin getty 41010 124539 1 0 3 0x88 kqread sshd 48454 452797 61123 73 3 0x1100090 kqread syslogd 61123 143338 1 0 3 0x100082 sbwait syslogd 31385 340861 1 0 3 0x100080 kqread resolvd 99625 401910 25821 77 3 0x100092 kqread dhcpleased 8097 82243 25821 77 3 0x100092 kqread dhcpleased 25821 183404 1 0 3 0x80 kqread dhcpleased 11007 281687 0 0 3 0x14200 bored smr 8066 303835 0 0 2 0x14200 zerothread 19048 29156 0 0 3 0x14200 aiodoned aiodoned 35483 508370 0 0 3 0x14200 syncer update 77708 433070 0 0 3 0x14200 cleaner cleaner 43352 249618 0 0 3 0x14200 reaper reaper 65038 450107 0 0 3 0x14200 pgdaemon pagedaemon 50139 141141 0 0 3 0x14200 bored viomb 25289 104622 0 0 3 0x40014200 acpi0 acpi0 97808 431100 0 0 3 0x14200 bored softnet7 5974 25341 0 0 3 0x14200 bored softnet6 52884 393116 0 0 3 0x14200 bored softnet5 29901 214943 0 0 3 0x14200 bored softnet4 69109 198794 0 0 3 0x14200 bored softnet3 4376 273022 0 0 3 0x14200 bored softnet2 34380 458202 0 0 3 0x14200 bored softnet1 6720 482838 0 0 3 0x14200 bored softnet0 27048 213498 0 0 3 0x14200 smrbar systqmp 18788 391870 0 0 3 0x14200 bored systq 31969 183811 0 0 3 0x40014200 tmoslp softclock 84939 25774 0 0 3 0x40014200 idle0 1 489183 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 10169 11040K 11053K 166960K 11246 0 pcb 17 12K 12K 166960K 17 0 rtable 214 7K 7K 166960K 274 0 pf 30 12K 12K 166960K 30 0 ifaddr 42 7K 7K 166960K 44 0 ifgroup 50 2K 2K 166960K 50 0 sysctl 1 1K 9K 166960K 5 0 counters 32 17K 17K 166960K 32 0 ioctlops 0 0K 2K 166960K 29 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1334 84K 84K 166960K 1350 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 1K 166960K 2 0 VM map 2 1K 1K 166960K 2 0 sem 2 0K 0K 166960K 2 0 dirhash 12 2K 2K 166960K 12 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 16 57K 97K 166960K 134 0 proc 57 58K 124K 166960K 472 0 subproc 72 4K 4K 166960K 72 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 in_multi 99 7K 7K 166960K 99 0 ether_multi 1 0K 0K 166960K 1 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 25 122K 122K 166960K 25 0 exec 0 0K 1K 166960K 343 0 fusefs mount 1 32K 32K 166960K 1 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 187 150K 159K 166960K 2702 0 UVM aobj 3 2K 2K 166960K 3 0 pinsyscall 37 74K 96K 166960K 1153 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 NDP 27 2K 2K 166960K 27 0 temp 33 8630K 8692K 166960K 3622 0 kqueue 13 20K 20K 166960K 21 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 36 0 32 1 0 1 1 0 8 0 rtentry 136 96 0 1 4 0 4 4 0 8 0 unpcb 144 31 0 16 1 0 1 1 0 8 0 syncache 336 3 0 3 1 0 1 1 0 8 1 tcpcb 736 6 0 2 1 0 1 1 0 8 0 arp 88 10 0 0 1 0 1 1 0 8 0 inpcb 328 54 0 47 2 0 2 2 0 8 1 nd6 104 16 0 0 1 0 1 1 0 8 0 kcovpl 48 8 0 0 1 0 1 1 0 8 0 art_heap8 4096 2 0 0 2 0 2 2 0 8 0 art_heap4 256 437 0 0 28 0 28 28 0 8 0 art_table 40 439 0 0 5 0 5 5 0 8 0 art_node 32 96 0 4 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 1544 0 41 94 0 94 94 0 8 0 ffsino 256 1544 0 41 94 0 94 94 0 8 0 nchpl 144 1724 0 45 63 0 63 63 0 8 0 uvmvnodes 80 1625 0 0 34 0 34 34 0 8 0 vnodes 216 1625 0 0 91 0 91 91 0 8 0 namei 1024 5018 0 5018 2 0 2 2 0 8 2 kstatmem 264 22 0 0 2 0 2 2 0 8 0 scxspl 216 6157 0 6157 8 0 8 8 1 8 8 plimitpl 152 26 0 10 1 0 1 1 0 8 0 sigapl 424 415 0 367 7 0 7 7 0 8 1 knotepl 120 2977 0 2930 2 0 2 2 0 8 0 kqueuepl 184 17 0 8 1 0 1 1 0 8 0 pipepl 304 98 0 71 3 0 3 3 0 8 0 fdescpl 448 395 0 367 5 0 5 5 0 8 1 filepl 120 1260 0 1056 7 0 7 7 0 8 0 lockfpl 104 6 0 4 1 0 1 1 0 8 0 lockfspl 48 4 0 2 1 0 1 1 0 8 0 sessionpl 144 21 0 13 1 0 1 1 0 8 0 pgrppl 48 29 0 13 1 0 1 1 0 8 0 ucredpl 104 64 0 53 1 0 1 1 0 8 0 zombiepl 144 367 0 367 1 0 1 1 0 8 1 processpl 1168 415 0 367 5 0 5 5 0 8 1 procpl 664 419 0 367 5 0 5 5 0 8 0 sockpl 552 121 0 95 3 0 3 3 0 8 1 mcl8k 8192 4 0 4 1 0 1 1 0 8 1 mcl4k 4096 2454 0 2400 14 0 14 14 0 8 4 mcl2k 2048 147 0 146 1 0 1 1 0 8 0 mtagpl 96 4 0 4 1 0 1 1 0 8 1 mbufpl 256 3758 0 3625 9 0 9 9 0 8 0 bufpl 280 2802 0 117 192 0 192 192 0 8 0 anonpl 24 95723 0 93002 23 0 23 23 0 187 3 amapchunkpl 152 7720 0 7364 16 0 16 16 0 158 2 amappl16 200 1832 0 1822 5 0 5 5 0 8 4 amappl15 192 7 0 7 1 0 1 1 0 8 1 amappl14 184 103 0 93 1 0 1 1 0 8 0 amappl13 176 6 0 6 1 0 1 1 0 8 1 amappl12 168 999 0 972 3 0 3 3 0 8 0 amappl11 160 44 0 34 1 0 1 1 0 8 0 amappl10 152 6 0 6 1 0 1 1 0 8 1 amappl9 144 255 0 255 1 0 1 1 0 8 1 amappl8 136 23 0 22 1 0 1 1 0 8 0 amappl7 128 95 0 85 1 0 1 1 0 8 0 amappl6 120 169 0 165 1 0 1 1 0 8 0 amappl5 112 115 0 109 1 0 1 1 0 8 0 amappl4 104 261 0 246 1 0 1 1 0 8 0 amappl3 96 1148 0 1067 3 0 3 3 0 8 1 amappl2 88 596 0 544 2 0 2 2 0 8 0 amappl1 80 7806 0 7261 13 0 13 13 0 8 0 amappl 88 2084 0 1959 4 0 4 4 0 92 0 dma4096 4096 1 0 1 1 0 1 1 0 8 1 dma1024 1024 1 0 0 1 0 1 1 0 8 0 dma256 256 6 0 6 1 0 1 1 0 8 1 dma128 128 253 0 253 1 0 1 1 0 8 1 dma64 64 6 0 6 1 0 1 1 0 8 1 dma32 32 7 0 7 1 0 1 1 0 8 1 dma16 16 18 0 17 1 0 1 1 0 8 0 aobjpl 72 2 0 0 1 0 1 1 0 8 0 uaddrrnd 24 395 0 367 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 395 0 367 1 0 1 1 0 8 0 vmmpekpl 168 4660 0 4635 2 0 2 2 0 8 0 vmmpepl 168 31548 0 29872 79 0 79 79 0 357 3 vmsppl 368 394 0 367 4 0 4 4 0 8 1 rwobjpl 40 13380 0 10971 26 0 26 26 0 8 0 pdppl 4096 796 0 734 96 14 82 82 0 8 20 pvpl 32 202768 0 195615 69 0 69 69 0 265 3 pmappl 216 394 0 367 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 363 0 14 10 0 10 10 0 8 0 ddb> machine ddbcpu 0 No such command ddb> trace arp_rtrequest(ffff800000039058,1,fffffd806bfa2788) at arp_rtrequest+0x657 arprequest sys/netinet/if_ether.c:279 [inline] arp_rtrequest(ffff800000039058,1,fffffd806bfa2788) at arp_rtrequest+0x657 sys/netinet/if_ether.c:182 rtrequest(1,ffff80003a95b760,0,ffff80003a95b6d0,16) at rtrequest+0xf08 sys/net/route.c:1114 rtm_output(ffff800001497200,ffff80003a95b808,ffff80003a95b760,0,16) at rtm_output+0x91a sys/net/rtsock.c:970 route_output(fffffd8074e60d00,ffff800001418ad0) at route_output+0xa2b sys/net/rtsock.c:875 route_send(ffff800001418ad0,fffffd8074e60d00,0,0) at route_send+0xd7 sys/net/rtsock.c:339 sosend(ffff800001418ad0,0,ffff80003a95b9b8,0,0,808) at sosend+0x804 sys/kern/uipc_socket.c:-1 sendit(ffff80002a7d8fb0,3,ffff80003a95bab0,808,ffff80003a95bb50) at sendit+0x5a5 sys/kern/uipc_syscalls.c:785 sys_sendto(ffff80002a7d8fb0,ffff80003a95bc00,ffff80003a95bb50) at sys_sendto+0x8d sys/kern/uipc_syscalls.c:563 syscall(ffff80003a95bc00) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003a95bc00) at syscall+0x962 sys/arch/amd64/amd64/trap.c:748 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x3a336196de0, count: -10 ddb> machine ddbcpu 1 No such command ddb> trace arp_rtrequest(ffff800000039058,1,fffffd806bfa2788) at arp_rtrequest+0x657 arprequest sys/netinet/if_ether.c:279 [inline] arp_rtrequest(ffff800000039058,1,fffffd806bfa2788) at arp_rtrequest+0x657 sys/netinet/if_ether.c:182 rtrequest(1,ffff80003a95b760,0,ffff80003a95b6d0,16) at rtrequest+0xf08 sys/net/route.c:1114 rtm_output(ffff800001497200,ffff80003a95b808,ffff80003a95b760,0,16) at rtm_output+0x91a sys/net/rtsock.c:970 route_output(fffffd8074e60d00,ffff800001418ad0) at route_output+0xa2b sys/net/rtsock.c:875 route_send(ffff800001418ad0,fffffd8074e60d00,0,0) at route_send+0xd7 sys/net/rtsock.c:339 sosend(ffff800001418ad0,0,ffff80003a95b9b8,0,0,808) at sosend+0x804 sys/kern/uipc_socket.c:-1 sendit(ffff80002a7d8fb0,3,ffff80003a95bab0,808,ffff80003a95bb50) at sendit+0x5a5 sys/kern/uipc_syscalls.c:785 sys_sendto(ffff80002a7d8fb0,ffff80003a95bc00,ffff80003a95bb50) at sys_sendto+0x8d sys/kern/uipc_syscalls.c:563 syscall(ffff80003a95bc00) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003a95bc00) at syscall+0x962 sys/arch/amd64/amd64/trap.c:748 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x3a336196de0, count: -10