uvm_fault(0xffffffff839aafd0, 0xffff80000161b0ca, 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 *441515 88128 0 0 0x4000000 0 syz-executor arp_rtrequest(ffff8000002a3058,1,fffff4806cad4c50) at arp_rtrequest+0x6a4 arprequest sys/netinet/if_ether.c:325 [inline] arp_rtrequest(ffff8000002a3058,1,fffff4806cad4c50) at arp_rtrequest+0x6a4 sys/netinet/if_ether.c:226 rtrequest(1,ffff8000350c9400,0,ffff8000350c9370,16) at rtrequest+0xdc1 sys/net/route.c:1114 rtm_output(ffff800001617e00,ffff8000350c94a8,ffff8000350c9400,0,16) at rtm_output+0x91a sys/net/rtsock.c:956 route_output(fffff4806f811b00,ffff800010fdd150) at route_output+0xa6a sys/net/rtsock.c:862 route_send(ffff800010fdd150,fffff4806f811b00,0,0) at route_send+0xd7 sys/net/rtsock.c:322 sosend(ffff800010fdd150,0,ffff8000350c9658,0,0,808) at sosend+0x804 sys/kern/uipc_socket.c:-1 sendit(ffff80003c8fa020,3,ffff8000350c9750,808,ffff8000350c97f0) at sendit+0x5a5 sys/kern/uipc_syscalls.c:785 sys_sendto(ffff80003c8fa020,ffff8000350c98a0,ffff8000350c97f0) at sys_sendto+0x8d sys/kern/uipc_syscalls.c:563 syscall(ffff8000350c98a0) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff8000350c98a0) at syscall+0x962 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x5713de3d8d0, 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(0xffffffff839aafd0, 0xffff80000161b0ca, 0, 1) -> e ddb> show kasan No such command ddb> trace arp_rtrequest(ffff8000002a3058,1,fffff4806cad4c50) at arp_rtrequest+0x6a4 arprequest sys/netinet/if_ether.c:325 [inline] arp_rtrequest(ffff8000002a3058,1,fffff4806cad4c50) at arp_rtrequest+0x6a4 sys/netinet/if_ether.c:226 rtrequest(1,ffff8000350c9400,0,ffff8000350c9370,16) at rtrequest+0xdc1 sys/net/route.c:1114 rtm_output(ffff800001617e00,ffff8000350c94a8,ffff8000350c9400,0,16) at rtm_output+0x91a sys/net/rtsock.c:956 route_output(fffff4806f811b00,ffff800010fdd150) at route_output+0xa6a sys/net/rtsock.c:862 route_send(ffff800010fdd150,fffff4806f811b00,0,0) at route_send+0xd7 sys/net/rtsock.c:322 sosend(ffff800010fdd150,0,ffff8000350c9658,0,0,808) at sosend+0x804 sys/kern/uipc_socket.c:-1 sendit(ffff80003c8fa020,3,ffff8000350c9750,808,ffff8000350c97f0) at sendit+0x5a5 sys/kern/uipc_syscalls.c:785 sys_sendto(ffff80003c8fa020,ffff8000350c98a0,ffff8000350c97f0) at sys_sendto+0x8d sys/kern/uipc_syscalls.c:563 syscall(ffff8000350c98a0) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff8000350c98a0) at syscall+0x962 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x5713de3d8d0, count: -10 ddb> show registers rdi 0xffff8000390e2000 rsi 0x98e rbp 0xffff8000350c9250 rbx 0xde rdx 0xffff8000390e2000 rcx 0xffff80000161afe0 rax 0xfffff4806dd78ce0 r8 0x1000 __ALIGN_SIZE r9 0 r10 0x56548af75b69b9bb r11 0x225f3fc93b0d2591 r12 0x1c r13 0xfffff4806dd78c00 r14 0xfffff4806cad4c50 r15 0xffff8000002a3058 rip 0xffffffff8216d7c4 arp_rtrequest+0x6a4 cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff8000350c91d0 ss 0x10 arp_rtrequest+0x6a4: movzwl 0xc(%rcx,%rbx,1),%ecx ddb> show proc PROC (syz-executor) tid=441515 pid=88128 tcnt=2 stat=onproc flags process=0 proc=4000000 runpri=50, usrpri=50, slppri=17, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff80003c8fb248,0xffffffff83abd388 process=0xffff800045ffb198 user=0xffff8000350c4000, vmspace=0xfffff48079b795d8 estcpu=36, cpticks=1, pctcpu=0.0, user=0, sys=1, intr=0 ddb> ps PID TID PPID UID S PRLAGS PFLAGS WAIT COMMAND 88128 393420 28768 0 3 0 0x80 fsleep syz-executor *88128 441515 28768 0 7 0 0x4000000 syz-executor 22378 415654 55176 0 3 0 0x80 nanoslp syz-executor 22378 341044 55176 0 3 0 0x4000080 kqread syz-executor 22378 291783 55176 0 3 0 0x4000080 fsleep syz-executor 22378 456907 55176 0 3 0 0x4000080 fsleep syz-executor 89717 214784 31484 0 2 0 0xc80 syz-executor 89717 227542 31484 0 3 0 0x4000080 fifor syz-executor 89717 321652 31484 0 3 0 0x4000080 fsleep syz-executor 76923 493018 19266 0 2 0 0xc80 syz-executor 76923 283259 19266 0 3 0 0x4000080 fifor syz-executor 76923 84371 19266 0 3 0 0x4000080 fsleep syz-executor 48352 372962 62708 0 3 0 0x80 nanoslp syz-executor 48352 376566 62708 0 3 0 0x4000080 lockf syz-executor 48352 185975 62708 0 3 0 0x4000080 fsleep syz-executor 28768 48346 5209 0 3 0x2 0x80 nanoslp syz-executor 37881 353181 5209 0 2 0x2 0 syz-executor 60642 373296 5209 0 2 0x2 0xc80 syz-executor 31484 142261 5209 0 2 0x2 0xc80 syz-executor 93221 286005 5209 0 3 0x2 0x80 nanoslp syz-executor 19266 405432 5209 0 2 0x2 0xc80 syz-executor 62708 444072 5209 0 2 0x2 0xc80 syz-executor 55176 3707 5209 0 2 0x2 0xc80 syz-executor 5209 429695 14613 0 3 0x2 0x80 kqread syz-executor 14613 283710 58220 0 3 0x100002 0x88 sigsusp ksh 58220 94379 1555 0 3 0x10 0x88 kqread sshd-session 1555 471031 35121 0 3 0x12 0x80 kqread sshd-session 42095 331779 1 0 3 0x100003 0x80 ttyin getty 35121 332843 1 0 3 0 0x88 kqread sshd 15823 483947 83635 73 3 0x1100010 0x80 kqread syslogd 83635 157007 1 0 3 0x100002 0x80 sbwait syslogd 34077 88292 1 0 3 0x100000 0x80 kqread resolvd 38917 97006 46434 77 3 0x100012 0x80 kqread dhcpleased 57510 123366 46434 77 3 0x100012 0x80 kqread dhcpleased 46434 497459 1 0 3 0 0x80 kqread dhcpleased 12933 276880 0 0 3 0x14000 0x200 bored smr 58767 71074 0 0 2 0x14000 0x200 zerothread 10607 305287 0 0 3 0x14000 0x200 aiodoned aiodoned 70744 222578 0 0 3 0x14000 0x200 syncer update 58886 351673 0 0 3 0x14000 0x200 cleaner cleaner 86114 522278 0 0 3 0x14000 0x200 reaper reaper 80827 58028 0 0 3 0x14000 0x200 pgdaemon pagedaemon 783 423442 0 0 3 0x14000 0x200 bored viomb 23066 74831 0 0 3 0x14000 0x40000200 acpi0 acpi0 46834 64152 0 0 3 0x14000 0x200 bored softnet0 77083 273256 0 0 3 0x14000 0x200 bored systqmp 8852 236627 0 0 3 0x14000 0x200 bored systq 63085 439240 0 0 3 0x14000 0x40000200 tmoslp softclock 2952 269583 0 0 3 0x14000 0x40000200 idle0 1 46514 0 0 3 0x2 0x80 wait init 0 0 -1 0 3 0x10000 0x200 scheduler swapper ddb> show all locks No such command ddb> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 11037 12109K 12547K 166960K 12408 0 pcb 17 12K 12K 166960K 44 0 rtable 260 9K 9K 166960K 399 0 pf 34 13K 17K 166960K 48 0 ifaddr 44 7K 8K 166960K 49 0 ifgroup 52 2K 2K 166960K 59 0 sysctl 2 1K 9K 166960K 6 0 counters 34 17K 18K 166960K 37 0 ioctlops 0 0K 4K 166960K 191 0 iov 0 0K 8K 166960K 3 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1423 89K 90K 166960K 1632 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 5K 166960K 5 0 VM map 2 1K 1K 166960K 2 0 sem 6 0K 0K 166960K 6 0 dirhash 12 2K 2K 166960K 12 0 ACPI 1734 201K 291K 166960K 11964 0 file desc 17 61K 97K 166960K 258 0 sigio 0 0K 0K 166960K 2 0 proc 60 59K 91K 166960K 507 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 16 0 in_multi 103 7K 7K 166960K 111 0 ether_multi 1 0K 0K 166960K 1 0 mrt 0 0K 0K 166960K 5 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 61 281K 281K 166960K 61 0 exec 0 0K 1K 166960K 378 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 228 151K 160K 166960K 4074 0 UVM aobj 6 2K 2K 166960K 6 0 pinsyscall 38 76K 94K 166960K 1365 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 7 0 NDP 12 0K 2K 166960K 30 0 temp 68 9110K 9174K 166960K 8195 0 kqueue 15 22K 25K 166960K 50 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 120 111 0 107 3 0 3 3 0 8 2 rtentry 136 116 0 2 4 0 4 4 0 8 0 unpcb 144 112 0 90 1 0 1 1 0 8 0 syncache 336 7 0 7 1 0 1 1 0 8 1 tcpqe 32 1 0 1 1 0 1 1 0 8 1 tcpcb 736 169 0 163 7 0 7 7 0 8 6 arp 96 18 0 0 1 0 1 1 0 8 0 ipq 40 2 0 0 1 0 1 1 0 8 0 ipqe 40 2 0 0 1 0 1 1 0 8 0 inpcb 328 321 0 308 7 0 7 7 0 8 5 nd6 112 27 0 0 1 0 1 1 0 8 0 kcovpl 48 8 0 0 1 0 1 1 0 8 0 ppxss 1072 3 0 2 1 0 1 1 0 8 0 pppxif 1416 1 0 1 1 0 1 1 0 8 1 pfstscr 40 4 0 2 1 0 1 1 0 8 0 pfstitem 24 4 0 0 1 0 1 1 0 8 0 pfstkey 128 6 0 2 1 0 1 1 0 8 0 pfstate 384 3 0 1 1 0 1 1 0 8 0 pfrule 1360 1 0 1 1 0 1 1 0 8 1 art_heap8 4096 2 0 0 2 0 2 2 0 8 0 art_heap4 256 476 0 6 30 0 30 30 0 8 0 art_table 40 478 0 6 5 0 5 5 0 8 0 art_node 32 116 0 12 1 0 1 1 0 8 0 sysvmsgpl 40 1 0 1 1 0 1 1 0 8 1 semapl 72 4 0 0 1 0 1 1 0 8 0 shmpl 112 3 0 0 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 1836 0 376 92 0 92 92 0 8 0 ffsino 256 1836 0 376 92 0 92 92 0 8 0 nchpl 144 2202 0 506 64 0 64 64 0 8 0 vnodes 216 2096 0 0 117 0 117 117 0 8 0 namei 1024 6987 0 6986 2 0 2 2 0 8 1 acpiwqpl 32 1 0 1 1 0 1 1 1 8 1 kstatmem 264 29 0 4 2 0 2 2 0 8 0 scxspl 216 7101 0 7101 3 0 3 3 1 8 3 plimitpl 152 45 0 27 1 0 1 1 0 8 0 sigapl 424 555 0 513 6 0 6 6 0 8 1 knotepl 120 24204 0 24156 9 0 9 9 0 8 7 kqueuepl 184 81 0 39 3 0 3 3 0 8 0 pipepl 304 133 0 106 3 0 3 3 0 8 0 fdescpl 448 542 0 513 5 0 5 5 0 8 1 filepl 120 2875 0 2618 12 0 12 12 0 8 3 lockfpl 104 46 0 42 1 0 1 1 0 8 0 lockfspl 48 20 0 17 1 0 1 1 0 8 0 sessionpl 144 29 0 21 1 0 1 1 0 8 0 pgrppl 48 38 0 22 1 0 1 1 0 8 0 ucredpl 104 389 0 376 1 0 1 1 0 8 0 zombiepl 144 515 0 513 1 0 1 1 0 8 0 processpl 1152 555 0 513 4 0 4 4 0 8 0 procpl 664 747 0 695 5 0 5 5 0 8 0 sosppl 176 1 0 1 1 0 1 1 0 8 1 sockpl 552 547 0 508 8 0 8 8 0 8 5 mcl64k 65536 7 0 7 1 0 1 1 0 8 1 mcl12k 12288 1 0 1 1 0 1 1 0 8 1 mcl8k 8192 4 0 4 1 0 1 1 0 8 1 mcl4k 4096 2630 0 2576 13 0 13 13 0 8 5 mcl2k 2048 208 0 205 1 0 1 1 0 8 0 mextrefs 64 90 0 90 1 0 1 1 0 8 1 mtagpl 96 5 0 4 1 0 1 1 0 8 0 mbufpl 256 5509 0 5352 17 0 17 17 0 8 6 bufpl 272 2573 0 102 165 0 165 165 0 8 0 anonpl 24 101413 0 98201 36 0 36 36 0 187 12 amapchunkpl 152 11766 0 11270 25 0 25 25 0 158 2 amappl16 200 1632 0 1608 5 0 5 5 0 8 2 amappl15 192 5 0 5 1 0 1 1 0 8 1 amappl14 184 409 0 408 1 0 1 1 0 8 0 amappl13 176 129 0 118 1 0 1 1 0 8 0 amappl12 168 784 0 756 2 0 2 2 0 8 0 amappl11 160 102 0 102 1 0 1 1 0 8 1 amappl10 152 59 0 49 1 0 1 1 0 8 0 amappl9 144 272 0 272 1 0 1 1 0 8 1 amappl8 136 96 0 94 1 0 1 1 0 8 0 amappl7 128 140 0 129 1 0 1 1 0 8 0 amappl6 120 148 0 146 1 0 1 1 0 8 0 amappl5 112 92 0 84 1 0 1 1 0 8 0 amappl4 104 259 0 243 1 0 1 1 0 8 0 amappl3 96 2210 0 2097 4 0 4 4 0 8 1 amappl2 88 525 0 471 2 0 2 2 0 8 0 amappl1 80 10701 0 10151 13 0 13 13 0 8 1 amappl 88 3354 0 3188 5 0 5 5 0 92 0 uvmvnodes 80 99 0 0 3 0 3 3 0 8 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 5 0 0 1 0 1 1 0 8 0 uaddrrnd 24 542 0 513 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 542 0 513 1 0 1 1 0 8 0 vmmpekpl 168 6203 0 6166 2 0 2 2 0 8 0 vmmpepl 168 43214 0 41431 82 0 82 82 0 357 2 vmsppl 368 541 0 513 4 0 4 4 0 8 1 rwobjpl 40 15298 0 14342 11 0 11 11 0 8 0 pdppl 4096 1090 0 1026 94 28 66 82 0 8 2 pvpl 32 255797 0 246912 101 0 101 101 0 265 12 pmappl 216 541 0 513 3 0 3 3 0 8 0 extentpl 40 46 0 28 1 0 1 1 0 8 0 phpool 112 534 0 28 15 0 15 15 0 8 0 ddb> machine ddbcpu 0 No such command ddb> trace arp_rtrequest(ffff8000002a3058,1,fffff4806cad4c50) at arp_rtrequest+0x6a4 arprequest sys/netinet/if_ether.c:325 [inline] arp_rtrequest(ffff8000002a3058,1,fffff4806cad4c50) at arp_rtrequest+0x6a4 sys/netinet/if_ether.c:226 rtrequest(1,ffff8000350c9400,0,ffff8000350c9370,16) at rtrequest+0xdc1 sys/net/route.c:1114 rtm_output(ffff800001617e00,ffff8000350c94a8,ffff8000350c9400,0,16) at rtm_output+0x91a sys/net/rtsock.c:956 route_output(fffff4806f811b00,ffff800010fdd150) at route_output+0xa6a sys/net/rtsock.c:862 route_send(ffff800010fdd150,fffff4806f811b00,0,0) at route_send+0xd7 sys/net/rtsock.c:322 sosend(ffff800010fdd150,0,ffff8000350c9658,0,0,808) at sosend+0x804 sys/kern/uipc_socket.c:-1 sendit(ffff80003c8fa020,3,ffff8000350c9750,808,ffff8000350c97f0) at sendit+0x5a5 sys/kern/uipc_syscalls.c:785 sys_sendto(ffff80003c8fa020,ffff8000350c98a0,ffff8000350c97f0) at sys_sendto+0x8d sys/kern/uipc_syscalls.c:563 syscall(ffff8000350c98a0) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff8000350c98a0) at syscall+0x962 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x5713de3d8d0, count: -10 ddb> machine ddbcpu 1 No such command ddb> trace arp_rtrequest(ffff8000002a3058,1,fffff4806cad4c50) at arp_rtrequest+0x6a4 arprequest sys/netinet/if_ether.c:325 [inline] arp_rtrequest(ffff8000002a3058,1,fffff4806cad4c50) at arp_rtrequest+0x6a4 sys/netinet/if_ether.c:226 rtrequest(1,ffff8000350c9400,0,ffff8000350c9370,16) at rtrequest+0xdc1 sys/net/route.c:1114 rtm_output(ffff800001617e00,ffff8000350c94a8,ffff8000350c9400,0,16) at rtm_output+0x91a sys/net/rtsock.c:956 route_output(fffff4806f811b00,ffff800010fdd150) at route_output+0xa6a sys/net/rtsock.c:862 route_send(ffff800010fdd150,fffff4806f811b00,0,0) at route_send+0xd7 sys/net/rtsock.c:322 sosend(ffff800010fdd150,0,ffff8000350c9658,0,0,808) at sosend+0x804 sys/kern/uipc_socket.c:-1 sendit(ffff80003c8fa020,3,ffff8000350c9750,808,ffff8000350c97f0) at sendit+0x5a5 sys/kern/uipc_syscalls.c:785 sys_sendto(ffff80003c8fa020,ffff8000350c98a0,ffff8000350c97f0) at sys_sendto+0x8d sys/kern/uipc_syscalls.c:563 syscall(ffff8000350c98a0) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff8000350c98a0) at syscall+0x962 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x5713de3d8d0, count: -10