uvm_fault(0xffffffff838322c0, 0xffff80000149904a, 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 *415060 40720 0 0 0x4000000 0 syz-executor arp_rtrequest(ffff800000039058,1,fffffd807d9bc810) at arp_rtrequest+0x6a4 arprequest sys/netinet/if_ether.c:325 [inline] arp_rtrequest(ffff800000039058,1,fffffd807d9bc810) at arp_rtrequest+0x6a4 sys/netinet/if_ether.c:226 rtrequest(1,ffff800038d48c40,0,ffff800038d48bb0,16) at rtrequest+0xf08 sys/net/route.c:1115 rtm_output(ffff800001496e00,ffff800038d48ce8,ffff800038d48c40,0,16) at rtm_output+0x91a sys/net/rtsock.c:953 route_output(fffffd800b46ee00,ffff800001418cf8) at route_output+0xa2b sys/net/rtsock.c:858 route_send(ffff800001418cf8,fffffd800b46ee00,0,0) at route_send+0xd7 sys/net/rtsock.c:322 sosend(ffff800001418cf8,0,ffff800038d48e98,0,0,808) at sosend+0x804 sys/kern/uipc_socket.c:-1 sendit(ffff800038d4ad18,3,ffff800038d48f90,808,ffff800038d49030) at sendit+0x5a5 sys/kern/uipc_syscalls.c:785 sys_sendto(ffff800038d4ad18,ffff800038d490e0,ffff800038d49030) at sys_sendto+0x8d sys/kern/uipc_syscalls.c:563 syscall(ffff800038d490e0) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff800038d490e0) at syscall+0x962 sys/arch/amd64/amd64/trap.c:746 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xe37addc6c70, 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(0xffffffff838322c0, 0xffff80000149904a, 0, 1) -> e ddb> trace arp_rtrequest(ffff800000039058,1,fffffd807d9bc810) at arp_rtrequest+0x6a4 arprequest sys/netinet/if_ether.c:325 [inline] arp_rtrequest(ffff800000039058,1,fffffd807d9bc810) at arp_rtrequest+0x6a4 sys/netinet/if_ether.c:226 rtrequest(1,ffff800038d48c40,0,ffff800038d48bb0,16) at rtrequest+0xf08 sys/net/route.c:1115 rtm_output(ffff800001496e00,ffff800038d48ce8,ffff800038d48c40,0,16) at rtm_output+0x91a sys/net/rtsock.c:953 route_output(fffffd800b46ee00,ffff800001418cf8) at route_output+0xa2b sys/net/rtsock.c:858 route_send(ffff800001418cf8,fffffd800b46ee00,0,0) at route_send+0xd7 sys/net/rtsock.c:322 sosend(ffff800001418cf8,0,ffff800038d48e98,0,0,808) at sosend+0x804 sys/kern/uipc_socket.c:-1 sendit(ffff800038d4ad18,3,ffff800038d48f90,808,ffff800038d49030) at sendit+0x5a5 sys/kern/uipc_syscalls.c:785 sys_sendto(ffff800038d4ad18,ffff800038d490e0,ffff800038d49030) at sys_sendto+0x8d sys/kern/uipc_syscalls.c:563 syscall(ffff800038d490e0) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff800038d490e0) at syscall+0x962 sys/arch/amd64/amd64/trap.c:746 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xe37addc6c70, count: -10 ddb> show registers rdi 0x20 rsi 0x90 rbp 0xffff800038d48a90 rbx 0xde rdx 0 rcx 0xffff800001498f60 rax 0xfffffd800b46ebe0 r8 0x1000 __ALIGN_SIZE r9 0 r10 0x6ce7b22392448473 r11 0xcbbcac64d8e3f6be r12 0x18 r13 0xfffffd800b46eb00 r14 0xfffffd807d9bc810 r15 0xffff800000039058 rip 0xffffffff82db20a4 arp_rtrequest+0x6a4 cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff800038d48a10 ss 0x10 arp_rtrequest+0x6a4: movzwl 0xc(%rcx,%rbx,1),%ecx ddb> show proc PROC (syz-executor) tid=415060 pid=40720 tcnt=3 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=0xffff800038d4aa80,0xffff800038d4bcb8 process=0xffff80003c97faa0 user=0xffff800038d44000, vmspace=0xfffffd806ba55d00 estcpu=36, cpticks=1, pctcpu=0.0, user=0, sys=1, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 1754 188652 89979 0 2 0 syz-executor 57122 121587 36192 0 2 0 syz-executor 57122 142727 36192 0 3 0x4000080 fsleep syz-executor 7844 479227 52303 0 2 0 syz-executor 7844 263168 52303 0 3 0x4000080 fifow syz-executor 252 476493 63613 0 2 0 syz-executor 252 363040 63613 0 3 0x4000080 fsleep syz-executor 51528 204925 981 -1 2 0x82010 syz-executor 51528 487452 981 -1 3 0x4002010 suspend syz-executor 40720 411922 63906 0 2 0 syz-executor *40720 415060 63906 0 7 0x4000000 syz-executor 40720 451165 63906 0 3 0x4000080 fsleep syz-executor 12061 427175 56693 0 2 0 syz-executor 12061 311810 56693 0 3 0x4000080 fsleep syz-executor 73094 201931 27591 0 2 0 syz-executor 73094 450727 27591 0 3 0x4000080 fsleep syz-executor 73094 60597 27591 0 3 0x4000080 fsleep syz-executor 89979 409074 52234 0 3 0x82 nanoslp syz-executor 36192 202525 52234 0 3 0x82 nanoslp syz-executor 981 402400 52234 0 3 0x82 nanoslp syz-executor 63906 358359 52234 0 3 0x82 nanoslp syz-executor 52303 168509 52234 0 3 0x82 nanoslp syz-executor 27591 307946 52234 0 3 0x82 nanoslp syz-executor 63613 84892 52234 0 3 0x82 nanoslp syz-executor 56693 180211 52234 0 3 0x82 nanoslp syz-executor 52234 113466 43259 0 2 0x2 syz-executor 43259 406503 43521 0 3 0x10008a sigsusp ksh 43521 382764 61167 0 3 0x98 kqread sshd-session 61167 440469 82407 0 3 0x92 kqread sshd-session 71506 210944 1 0 3 0x100083 ttyin getty 82407 461357 1 0 3 0x88 kqread sshd 96897 247630 43446 73 3 0x1100090 kqread syslogd 43446 513854 1 0 3 0x100082 sbwait syslogd 22896 133540 1 0 3 0x100080 kqread resolvd 45440 122626 39119 77 3 0x100092 kqread dhcpleased 87502 16247 39119 77 3 0x100092 kqread dhcpleased 39119 383126 1 0 3 0x80 kqread dhcpleased 22190 31580 0 0 3 0x14200 bored smr 52195 469835 0 0 2 0x14200 zerothread 92721 473882 0 0 3 0x14200 aiodoned aiodoned 47652 259583 0 0 3 0x14200 syncer update 50942 231726 0 0 3 0x14200 cleaner cleaner 29556 303621 0 0 3 0x14200 reaper reaper 51353 108054 0 0 3 0x14200 pgdaemon pagedaemon 19893 345396 0 0 3 0x14200 bored viomb 47200 446824 0 0 3 0x40014200 acpi0 acpi0 54837 463516 0 0 3 0x14200 bored softnet7 17390 434553 0 0 3 0x14200 bored softnet6 35513 181796 0 0 3 0x14200 bored softnet5 33554 34478 0 0 3 0x14200 bored softnet4 98256 14522 0 0 3 0x14200 bored softnet3 47000 352168 0 0 3 0x14200 bored softnet2 64720 232078 0 0 3 0x14200 bored softnet1 79179 432857 0 0 3 0x14200 bored softnet0 94477 94618 0 0 3 0x14200 smrbar systqmp 39191 442458 0 0 3 0x14200 bored systq 10992 356251 0 0 3 0x40014200 tmoslp softclock 1565 356237 0 0 3 0x40014200 idle0 1 47260 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 10170 11048K 11053K 166960K 11247 0 pcb 17 12K 12K 166960K 17 0 rtable 214 7K 7K 166960K 275 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 1335 84K 84K 166960K 1351 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 18 65K 97K 166960K 138 0 proc 58 59K 124K 166960K 473 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 344 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 213 150K 159K 166960K 2793 0 UVM aobj 4 2K 2K 166960K 4 0 pinsyscall 39 78K 96K 166960K 1160 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 3632 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 120 102 0 33 3 0 3 3 0 8 0 rtentry 136 96 0 1 4 0 4 4 0 8 0 unpcb 144 33 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 96 10 0 0 1 0 1 1 0 8 0 inpcb 328 55 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 256 436 0 0 28 0 28 28 0 8 0 art_table 40 438 0 0 5 0 5 5 0 8 0 art_node 32 96 0 4 1 0 1 1 0 8 0 shmpl 112 1 0 0 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 1546 0 41 95 0 95 95 0 8 0 ffsino 256 1546 0 41 95 0 95 95 0 8 0 nchpl 144 1729 0 45 63 0 63 63 0 8 0 uvmvnodes 80 1627 0 0 34 0 34 34 0 8 0 vnodes 216 1627 0 0 91 0 91 91 0 8 0 namei 1024 5036 0 5036 2 0 2 2 0 8 2 kstatmem 264 22 0 0 2 0 2 2 0 8 0 scxspl 216 6186 0 6186 8 0 8 8 1 8 8 plimitpl 152 26 0 10 1 0 1 1 0 8 0 sigapl 424 419 0 369 7 0 7 7 0 8 1 knotepl 120 2914 0 2867 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 448 399 0 369 5 0 5 5 0 8 1 filepl 120 1332 0 1059 9 0 9 9 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 65 0 53 1 0 1 1 0 8 0 zombiepl 144 369 0 369 1 0 1 1 0 8 1 processpl 1152 419 0 369 5 0 5 5 0 8 1 procpl 664 428 0 369 5 0 5 5 0 8 0 sockpl 552 190 0 96 7 0 7 7 0 8 0 mcl8k 8192 4 0 4 1 0 1 1 0 8 1 mcl4k 4096 2420 0 2365 12 0 12 12 0 8 4 mcl2k 2048 149 0 148 1 0 1 1 0 8 0 mtagpl 96 4 0 4 1 0 1 1 0 8 1 mbufpl 256 3715 0 3581 9 0 9 9 0 8 0 bufpl 280 2813 0 117 193 0 193 193 0 8 0 anonpl 24 96008 0 93044 23 0 23 23 0 187 3 amapchunkpl 152 7873 0 7426 18 0 18 18 0 158 0 amappl16 200 1791 0 1781 5 0 5 5 0 8 4 amappl15 192 43 0 43 1 0 1 1 0 8 1 amappl14 184 101 0 91 1 0 1 1 0 8 0 amappl13 176 2 0 2 1 0 1 1 0 8 1 amappl12 168 1013 0 984 3 0 3 3 0 8 1 amappl11 160 45 0 35 1 0 1 1 0 8 0 amappl10 152 84 0 84 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 128 109 0 99 1 0 1 1 0 8 0 amappl6 120 185 0 182 1 0 1 1 0 8 0 amappl5 112 111 0 105 1 0 1 1 0 8 0 amappl4 104 333 0 318 1 0 1 1 0 8 0 amappl3 96 1149 0 1064 3 0 3 3 0 8 0 amappl2 88 623 0 554 2 0 2 2 0 8 0 amappl1 80 7855 0 7303 13 0 13 13 0 8 0 amappl 88 2162 0 2012 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 3 0 0 1 0 1 1 0 8 0 uaddrrnd 24 399 0 369 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 399 0 369 1 0 1 1 0 8 0 vmmpekpl 168 4577 0 4549 2 0 2 2 0 8 0 vmmpepl 168 32388 0 30567 80 0 80 80 0 357 0 vmsppl 368 398 0 369 4 0 4 4 0 8 1 rwobjpl 40 13439 0 11005 26 0 26 26 0 8 0 pdppl 4096 804 0 738 96 14 82 82 0 8 16 pvpl 32 204682 0 196589 68 0 68 68 0 265 2 pmappl 216 398 0 369 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 358 0 14 10 0 10 10 0 8 0 ddb> machine ddbcpu 0 No such command ddb> trace arp_rtrequest(ffff800000039058,1,fffffd807d9bc810) at arp_rtrequest+0x6a4 arprequest sys/netinet/if_ether.c:325 [inline] arp_rtrequest(ffff800000039058,1,fffffd807d9bc810) at arp_rtrequest+0x6a4 sys/netinet/if_ether.c:226 rtrequest(1,ffff800038d48c40,0,ffff800038d48bb0,16) at rtrequest+0xf08 sys/net/route.c:1115 rtm_output(ffff800001496e00,ffff800038d48ce8,ffff800038d48c40,0,16) at rtm_output+0x91a sys/net/rtsock.c:953 route_output(fffffd800b46ee00,ffff800001418cf8) at route_output+0xa2b sys/net/rtsock.c:858 route_send(ffff800001418cf8,fffffd800b46ee00,0,0) at route_send+0xd7 sys/net/rtsock.c:322 sosend(ffff800001418cf8,0,ffff800038d48e98,0,0,808) at sosend+0x804 sys/kern/uipc_socket.c:-1 sendit(ffff800038d4ad18,3,ffff800038d48f90,808,ffff800038d49030) at sendit+0x5a5 sys/kern/uipc_syscalls.c:785 sys_sendto(ffff800038d4ad18,ffff800038d490e0,ffff800038d49030) at sys_sendto+0x8d sys/kern/uipc_syscalls.c:563 syscall(ffff800038d490e0) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff800038d490e0) at syscall+0x962 sys/arch/amd64/amd64/trap.c:746 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xe37addc6c70, count: -10 ddb> machine ddbcpu 1 No such command ddb> trace arp_rtrequest(ffff800000039058,1,fffffd807d9bc810) at arp_rtrequest+0x6a4 arprequest sys/netinet/if_ether.c:325 [inline] arp_rtrequest(ffff800000039058,1,fffffd807d9bc810) at arp_rtrequest+0x6a4 sys/netinet/if_ether.c:226 rtrequest(1,ffff800038d48c40,0,ffff800038d48bb0,16) at rtrequest+0xf08 sys/net/route.c:1115 rtm_output(ffff800001496e00,ffff800038d48ce8,ffff800038d48c40,0,16) at rtm_output+0x91a sys/net/rtsock.c:953 route_output(fffffd800b46ee00,ffff800001418cf8) at route_output+0xa2b sys/net/rtsock.c:858 route_send(ffff800001418cf8,fffffd800b46ee00,0,0) at route_send+0xd7 sys/net/rtsock.c:322 sosend(ffff800001418cf8,0,ffff800038d48e98,0,0,808) at sosend+0x804 sys/kern/uipc_socket.c:-1 sendit(ffff800038d4ad18,3,ffff800038d48f90,808,ffff800038d49030) at sendit+0x5a5 sys/kern/uipc_syscalls.c:785 sys_sendto(ffff800038d4ad18,ffff800038d490e0,ffff800038d49030) at sys_sendto+0x8d sys/kern/uipc_syscalls.c:563 syscall(ffff800038d490e0) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff800038d490e0) at syscall+0x962 sys/arch/amd64/amd64/trap.c:746 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xe37addc6c70, count: -10