uvm_fault(0xfffffd805771d558, 0x0, 0, 1) -> e kernel: page fault trap, code=0 Stopped at ifa_update_broadaddr+0x1f: movzbl 0(%r15),%r12d ddb> ddb> set $lines = 0 ddb> set $maxwidth = 0 ddb> show panic kernel page fault uvm_fault(0xfffffd805771d558, 0x0, 0, 1) -> e ifa_update_broadaddr(ffff800000ac6800,ffff800000aed000,ffff80001e7bdb60) at ifa_update_broadaddr+0x1f sys/net/if.c:3070 end trace frame: 0xffff80001e7bda80, count: 0 ddb> trace ifa_update_broadaddr(ffff800000ac6800,ffff800000aed000,ffff80001e7bdb60) at ifa_update_broadaddr+0x1f sys/net/if.c:3070 in_ioctl(80206913,ffff80001e7bdb50,ffff800000ac6800,1) at in_ioctl+0x5eb sys/netinet/in.c:320 ifioctl(fffffd805840e978,80206913,ffff80001e7bdb50,ffff80001d6c3ae8) at ifioctl+0xe60 sys/net/if.c:2282 sys_ioctl(ffff80001d6c3ae8,ffff80001e7bdc68,ffff80001e7bdcb0) at sys_ioctl+0x4a1 syscall(ffff80001e7bdd30) at syscall+0x507 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xb29219d6f30, count: -6 ddb> show registers rdi 0xffffffff822119db ifa_update_broadaddr+0x1b rsi 0x3d rbp 0xffff80001e7bd9e0 rbx 0x10 rdx 0x3e rcx 0xffff80001d788000 rax 0xffff80001d788000 r8 0xffffffff8207eeb7 in_ioctl+0x387 r9 0x7 r10 0x3 r11 0xe4371f808d23260e r12 0xffff80001e7bdb60 r13 0 r14 0xffff80001e7bdb60 r15 0 rip 0xffffffff822119df ifa_update_broadaddr+0x1f cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff80001e7bd9a0 ss 0x10 ifa_update_broadaddr+0x1f: movzbl 0(%r15),%r12d ddb> show proc PROC (syz-executor.0) pid=488982 stat=onproc flags process=0 proc=4000000 pri=32, usrpri=86, nice=20 forw=0xffffffffffffffff, list=0xffff80001d6c2288,0xffffffff8285d098 process=0xffff80001d6c4af0 user=0xffff80001e7b8000, vmspace=0xfffffd805771d558 estcpu=36, cpticks=1, pctcpu=0.0 user=0, sys=1, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 55873 500338 2452 0 2 0 syz-executor.0 *55873 488982 2452 0 7 0x4000000 syz-executor.0 41559 301295 0 0 3 0x14200 bored sosplice 53032 302011 14027 0 2 0x2 syz-executor.1 2452 244452 14027 0 3 0x82 nanosleep syz-executor.0 14027 301907 28482 0 3 0x82 thrsleep syz-fuzzer 14027 508711 28482 0 2 0x4000482 syz-fuzzer 14027 344270 28482 0 3 0x4000082 thrsleep syz-fuzzer 14027 479010 28482 0 3 0x4000082 thrsleep syz-fuzzer 14027 412591 28482 0 3 0x4000082 thrsleep syz-fuzzer 14027 3578 28482 0 3 0x4000082 kqread syz-fuzzer 14027 229986 28482 0 3 0x4000082 thrsleep syz-fuzzer 14027 514350 28482 0 3 0x4000082 thrsleep syz-fuzzer 28482 20033 24534 0 3 0x10008a pause ksh 24534 466130 78942 0 3 0x92 select sshd 42822 348888 1 0 3 0x100083 ttyin getty 78942 270401 1 0 3 0x80 select sshd 21665 23883 47083 73 3 0x100090 kqread syslogd 47083 395944 1 0 3 0x100082 netio syslogd 26486 274107 1 77 3 0x100090 poll dhclient 34560 302279 1 0 3 0x80 poll dhclient 44159 3834 0 0 3 0x14200 bored smr 87447 442152 0 0 2 0x14200 zerothread 42072 494308 0 0 3 0x14200 aiodoned aiodoned 90836 507218 0 0 3 0x14200 syncer update 1272 458717 0 0 3 0x14200 cleaner cleaner 1504 477636 0 0 3 0x14200 reaper reaper 63000 90394 0 0 3 0x14200 pgdaemon pagedaemon 60880 393452 0 0 3 0x14200 bored crynlk 85547 507671 0 0 3 0x14200 bored crypto 42430 453700 0 0 3 0x40014200 acpi0 acpi0 10912 140952 0 0 3 0x14200 bored softnet 54643 171962 0 0 3 0x14200 bored systqmp 304 91546 0 0 3 0x14200 bored systq 52695 254091 0 0 3 0x40014200 bored softclock 80880 428826 0 0 3 0x40014200 idle0 1 176849 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 9515 6364K 6816K 78643K 11642 0 pcb 13 8K 8K 78643K 119 0 rtable 116 7K 11K 78643K 601 0 ifaddr 91 18K 18K 78643K 223 0 counters 21 16K 17K 78643K 25 0 ioctlops 0 0K 4K 78643K 125 0 iov 0 0K 16K 78643K 80 0 mount 1 1K 1K 78643K 1 0 vnodes 1224 77K 77K 78643K 1613 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 5K 78643K 13 0 VM map 2 0K 0K 78643K 2 0 sem 12 1K 1K 78643K 17 0 dirhash 9 1K 2K 78643K 12 0 ACPI 1809 195K 288K 78643K 12938 0 file desc 5 13K 25K 78643K 791 0 sigio 0 0K 0K 78643K 6 0 proc 49 38K 54K 78643K 416 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 49 0 in_multi 63 3K 3K 78643K 152 0 ether_multi 1 0K 0K 78643K 19 0 mrt 0 0K 0K 78643K 18 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 67 307K 307K 78643K 67 0 exec 0 0K 1K 78643K 229 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 149 72K 72K 78643K 2597 0 UVM aobj 33 2K 2K 78643K 53 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 86 0 NDP 13 0K 0K 78643K 27 0 temp 112 3856K 3920K 78643K 4853 0 kqueue 3 4K 12K 78643K 31 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 arp 64 8 0 1 1 0 1 1 0 8 0 rtpcb 80 49 0 47 1 0 1 1 0 8 0 rtentry 112 84 0 45 2 0 2 2 0 8 0 unpcb 120 1097 0 1086 1 0 1 1 0 8 0 syncache 264 8 0 8 2 2 0 1 0 8 0 tcpqe 32 467 0 467 1 1 0 1 0 8 0 tcpcb 544 203 0 198 1 0 1 1 0 8 0 ipq 40 3 0 3 1 1 0 1 0 8 0 ipqe 40 10 0 10 1 1 0 1 0 8 0 inpcb 296 1201 0 1192 8 6 2 2 0 8 0 rttmr 72 7 0 7 3 3 0 1 0 8 0 nd6 48 16 0 14 1 0 1 1 0 8 0 pkpcb 40 2 0 2 1 1 0 1 0 8 0 swfcl 56 2 0 0 1 0 1 1 0 8 0 pfrktable 1344 127 0 118 5 3 2 2 0 8 1 pftag 88 24 0 24 3 2 1 1 0 8 1 pfstitem 24 2 0 0 1 0 1 1 0 8 0 pfstkey 112 4 0 2 1 0 1 1 0 8 0 pfstate 328 2 0 1 1 0 1 1 0 8 0 pfrule 1360 34 0 22 4 3 1 1 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 342 0 178 13 1 12 13 0 8 0 art_table 32 343 0 178 2 0 2 2 0 8 0 art_node 16 83 0 46 1 0 1 1 0 8 0 sysvmsgpl 40 12 0 4 1 0 1 1 0 8 0 semupl 112 4 0 4 1 1 0 1 0 8 0 semapl 112 11 0 1 1 0 1 1 0 8 0 shmpl 112 50 0 20 1 0 1 1 0 8 0 dirhash 1024 17 0 10 3 1 2 3 0 8 0 dino2pl 256 2476 0 1078 88 0 88 88 0 8 0 ffsino 240 2476 0 1078 83 0 83 83 0 8 0 nchpl 144 3732 0 2139 60 0 60 60 0 8 0 uvmvnodes 72 2746 0 0 50 0 50 50 0 8 0 vnodes 208 2746 0 0 145 0 145 145 0 8 0 namei 1024 11861 0 11860 6 5 1 1 0 8 0 vcpupl 1984 6 0 0 1 0 1 1 0 8 0 vmpool 528 12 0 6 1 0 1 1 0 8 0 pfiaddrpl 120 36 0 30 3 2 1 1 0 8 0 scsiplug 64 2 0 2 2 2 0 1 0 8 0 scxspl 192 10540 0 10540 5 4 1 1 0 8 1 plimitpl 152 59 0 52 1 0 1 1 0 8 0 sigapl 424 978 0 949 4 0 4 4 0 8 0 futexpl 56 16380 0 16380 6 5 1 1 0 8 1 knotepl 112 102 0 83 1 0 1 1 0 8 0 kqueuepl 144 88 0 83 1 0 1 1 0 8 0 pipepl 272 170 0 160 2 1 1 2 0 8 0 fdescpl 432 963 0 949 2 0 2 2 0 8 0 filepl 120 7591 0 7493 5 1 4 4 0 8 1 lockfpl 104 180 0 179 1 0 1 1 0 8 0 lockfspl 48 68 0 67 1 0 1 1 0 8 0 sessionpl 112 17 0 7 1 0 1 1 0 8 0 pgrppl 48 65 0 55 1 0 1 1 0 8 0 ucredpl 96 2247 0 2240 1 0 1 1 0 8 0 zombiepl 144 949 0 949 2 1 1 1 0 8 1 processpl 928 978 0 949 4 0 4 4 0 8 0 procpl 624 1858 0 1821 4 0 4 4 0 8 0 sosppl 128 2 0 2 1 1 0 1 0 8 0 sockpl 400 2351 0 2327 9 4 5 5 0 8 2 mcl64k 65536 561 0 561 69 68 1 65 0 8 1 mcl16k 16384 4 0 4 4 3 1 1 0 8 1 mcl12k 12288 23 0 23 5 4 1 1 0 8 1 mcl9k 9216 10 0 10 8 7 1 1 0 8 1 mcl8k 8192 24 0 24 7 6 1 1 0 8 1 mcl4k 4096 52 0 52 8 7 1 1 0 8 1 mcl2k2 2112 10 0 10 4 3 1 1 0 8 1 mcl2k 2048 92035 0 91971 19 10 9 17 0 8 0 mtagpl 96 94 0 15 3 1 2 2 0 8 0 mbufpl 256 150311 0 149994 52 30 22 40 0 8 0 bufpl 280 4441 0 134 308 0 308 308 0 8 0 anonpl 16 99646 0 82590 86 14 72 79 0 107 0 amapchunkpl 152 3758 0 3613 15 2 13 13 0 158 7 amappl16 192 4199 0 3203 65 13 52 58 0 8 2 amappl15 184 378 0 374 1 0 1 1 0 8 0 amappl14 176 411 0 403 1 0 1 1 0 8 0 amappl13 168 26 0 23 1 0 1 1 0 8 0 amappl12 160 9 0 8 2 1 1 1 0 8 0 amappl11 152 430 0 420 1 0 1 1 0 8 0 amappl10 144 12 0 7 1 0 1 1 0 8 0 amappl9 136 379 0 378 1 0 1 1 0 8 0 amappl8 128 360 0 313 2 0 2 2 0 8 0 amappl7 120 106 0 94 1 0 1 1 0 8 0 amappl6 112 408 0 401 1 0 1 1 0 8 0 amappl5 104 517 0 506 1 0 1 1 0 8 0 amappl4 96 799 0 775 1 0 1 1 0 8 0 amappl3 88 132 0 126 1 0 1 1 0 8 0 amappl2 80 7298 0 7229 2 0 2 2 0 8 0 amappl1 72 30180 0 29759 23 13 10 17 0 8 0 amappl 80 2089 0 2044 2 0 2 2 0 84 0 dma4096 4096 1 0 1 1 1 0 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 52 0 20 1 0 1 1 0 8 0 uaddrrnd 24 975 0 955 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 975 0 955 1 0 1 1 0 8 0 vmmpekpl 168 9375 0 9344 2 0 2 2 0 8 0 vmmpepl 168 123019 0 120894 143 44 99 118 0 357 5 vmsppl 272 974 0 955 2 0 2 2 0 8 0 pdppl 4096 1956 0 1916 7 1 6 6 0 8 0 pvpl 32 289392 0 269607 200 31 169 187 0 265 1 pmappl 200 974 0 955 2 0 2 2 0 8 1 extentpl 40 53 0 36 1 0 1 1 0 8 0 phpool 112 384 0 142 10 1 9 10 0 8 0 ddb> machine ddbcpu 0 No such command ddb> trace ifa_update_broadaddr(ffff800000ac6800,ffff800000aed000,ffff80001e7bdb60) at ifa_update_broadaddr+0x1f sys/net/if.c:3070 in_ioctl(80206913,ffff80001e7bdb50,ffff800000ac6800,1) at in_ioctl+0x5eb sys/netinet/in.c:320 ifioctl(fffffd805840e978,80206913,ffff80001e7bdb50,ffff80001d6c3ae8) at ifioctl+0xe60 sys/net/if.c:2282 sys_ioctl(ffff80001d6c3ae8,ffff80001e7bdc68,ffff80001e7bdcb0) at sys_ioctl+0x4a1 syscall(ffff80001e7bdd30) at syscall+0x507 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xb29219d6f30, count: -6 ddb> machine ddbcpu 1 No such command ddb> trace ifa_update_broadaddr(ffff800000ac6800,ffff800000aed000,ffff80001e7bdb60) at ifa_update_broadaddr+0x1f sys/net/if.c:3070 in_ioctl(80206913,ffff80001e7bdb50,ffff800000ac6800,1) at in_ioctl+0x5eb sys/netinet/in.c:320 ifioctl(fffffd805840e978,80206913,ffff80001e7bdb50,ffff80001d6c3ae8) at ifioctl+0xe60 sys/net/if.c:2282 sys_ioctl(ffff80001d6c3ae8,ffff80001e7bdc68,ffff80001e7bdcb0) at sys_ioctl+0x4a1 syscall(ffff80001e7bdd30) at syscall+0x507 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xb29219d6f30, count: -6