login: uvm_fault(0xfffffd80577df008, 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(0xfffffd80577df008, 0x0, 0, 1) -> e ifa_update_broadaddr(ffff800000ad7000,ffff800000aeb700,ffff80001e7db9e0) at ifa_update_broadaddr+0x1f sys/net/if.c:3070 end trace frame: 0xffff80001e7db900, count: 0 ddb> trace ifa_update_broadaddr(ffff800000ad7000,ffff800000aeb700,ffff80001e7db9e0) at ifa_update_broadaddr+0x1f sys/net/if.c:3070 in_ioctl(80206913,ffff80001e7db9d0,ffff800000ad7000,1) at in_ioctl+0x5eb sys/netinet/in.c:320 ifioctl(fffffd806b638320,80206913,ffff80001e7db9d0,ffff80001d6c3af8) at ifioctl+0xe60 sys/net/if.c:2282 sys_ioctl(ffff80001d6c3af8,ffff80001e7dbae8,ffff80001e7dbb30) at sys_ioctl+0x4a1 syscall(ffff80001e7dbbb0) at syscall+0x507 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x95410c14130, count: -6 ddb> show registers rdi 0xffffffff814c175b ifa_update_broadaddr+0x1b rsi 0x3c rbp 0xffff80001e7db860 rbx 0x10 rdx 0x3d rcx 0xffff80001f9a6000 rax 0xffff80001f9a6000 r8 0xffffffff817e8fb7 in_ioctl+0x387 r9 0x7 r10 0x3 r11 0xa286f95883b913e r12 0xffff80001e7db9e0 r13 0xffff80001e7db9d0 r14 0xffff80001e7db9e0 r15 0 rip 0xffffffff814c175f ifa_update_broadaddr+0x1f cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff80001e7db820 ss 0x10 ifa_update_broadaddr+0x1f: movzbl 0(%r15),%r12d ddb> show proc PROC (syz-executor.0) pid=220915 stat=onproc flags process=0 proc=4000000 pri=32, usrpri=51, nice=20 forw=0xffffffffffffffff, list=0xffff80001d6c29e8,0xffffffff827e55d8 process=0xffff80001d7075d8 user=0xffff80001e7d6000, vmspace=0xfffffd80577df008 estcpu=4, cpticks=0, pctcpu=0.0 user=0, sys=0, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 96290 35324 89226 0 2 0 syz-executor.0 *96290 220915 89226 0 7 0x4000000 syz-executor.0 3990 86070 20990 0 3 0x80 nanosleep syz-executor.1 3990 400920 20990 0 3 0x4000080 poll syz-executor.1 3990 319287 20990 0 3 0x4000080 fsleep syz-executor.1 49030 197581 1 0 3 0x100083 ttyin getty 84294 417994 0 0 3 0x14200 acct acct 20990 352259 44685 0 3 0x82 nanosleep syz-executor.1 14429 380277 0 0 3 0x14200 bored sosplice 89226 8156 44685 0 3 0x82 nanosleep syz-executor.0 44685 248585 63106 0 3 0x82 thrsleep syz-fuzzer 44685 68721 63106 0 3 0x4000082 thrsleep syz-fuzzer 44685 350315 63106 0 3 0x4000082 kqread syz-fuzzer 44685 250346 63106 0 3 0x4000082 thrsleep syz-fuzzer 44685 275067 63106 0 3 0x4000082 thrsleep syz-fuzzer 44685 155656 63106 0 3 0x4000082 thrsleep syz-fuzzer 44685 42656 63106 0 3 0x4000082 thrsleep syz-fuzzer 44685 290452 63106 0 3 0x4000082 thrsleep syz-fuzzer 63106 378126 49425 0 3 0x10008a pause ksh 49425 267192 89940 0 3 0x92 select sshd 89940 299619 1 0 3 0x80 select sshd 34534 233567 10278 73 3 0x100090 kqread syslogd 10278 306722 1 0 3 0x100082 netio syslogd 69030 371550 1 77 3 0x100090 poll dhclient 70041 512412 1 0 3 0x80 poll dhclient 77097 443747 0 0 3 0x14200 bored smr 150 243589 0 0 2 0x14200 zerothread 84866 264385 0 0 3 0x14200 aiodoned aiodoned 31279 346528 0 0 3 0x14200 syncer update 23115 301671 0 0 3 0x14200 cleaner cleaner 23398 469386 0 0 3 0x14200 reaper reaper 27560 348397 0 0 3 0x14200 pgdaemon pagedaemon 32724 86160 0 0 3 0x14200 bored crynlk 93219 443967 0 0 3 0x14200 bored crypto 45432 372949 0 0 3 0x40014200 acpi0 acpi0 37001 67284 0 0 3 0x14200 bored softnet 50313 230863 0 0 3 0x14200 bored systqmp 49796 358881 0 0 3 0x14200 bored systq 49262 209272 0 0 3 0x40014200 bored softclock 13371 29060 0 0 3 0x40014200 idle0 1 63559 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 9538 6374K 6889K 78643K 11516 0 pcb 13 8K 8K 78643K 210 0 rtable 90 5K 8K 78643K 552 0 ifaddr 104 19K 20K 78643K 198 0 sysctl 2 0K 0K 78643K 2 0 counters 21 16K 16K 78643K 29 0 ioctlops 0 0K 4K 78643K 94 0 iov 0 0K 24K 78643K 100 0 mount 1 1K 1K 78643K 1 0 vnodes 1216 76K 77K 78643K 1576 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 5K 78643K 6 0 VM map 2 0K 0K 78643K 2 0 sem 12 0K 0K 78643K 92 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1809 195K 288K 78643K 12938 0 file desc 6 17K 25K 78643K 608 0 sigio 0 0K 0K 78643K 34 0 proc 49 38K 63K 78643K 490 0 subproc 32 2K 2K 78643K 68 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 0 0K 0K 78643K 232 0 in_multi 81 4K 4K 78643K 180 0 ether_multi 1 0K 0K 78643K 12 0 mrt 0 0K 0K 78643K 4 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 270 0 pfkey data 0 0K 0K 78643K 2 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 150 72K 72K 78643K 2365 0 UVM aobj 25 4K 4K 78643K 31 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 78 0 NDP 17 0K 0K 78643K 39 0 temp 127 3858K 3925K 78643K 17986 0 kqueue 3 4K 12K 78643K 25 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 11 0 6 1 0 1 1 0 8 0 rtpcb 80 65 0 63 1 0 1 1 0 8 0 rtentry 112 108 0 78 2 0 2 2 0 8 0 unpcb 120 269 0 261 1 0 1 1 0 8 0 syncache 264 12 0 12 4 4 0 1 0 8 0 tcpqe 32 593 0 593 2 2 0 1 0 8 0 tcpcb 544 384 0 379 1 0 1 1 0 8 0 ipq 40 68 0 68 2 2 0 1 0 8 0 ipqe 40 136 0 136 2 2 0 1 0 8 0 inpcb 296 1041 0 1032 7 6 1 2 0 8 0 rttmr 72 2 0 2 2 2 0 1 0 8 0 nd6 48 19 0 16 1 0 1 1 0 8 0 pkpcb 40 8 0 8 3 3 0 1 0 8 0 swfcl 56 2 0 0 1 0 1 1 0 8 0 ppxss 1128 1 0 1 1 1 0 1 0 8 0 pfstscr 40 4 0 2 1 0 1 1 0 8 0 pfrktable 1344 34 0 32 2 1 1 1 0 8 0 pftag 88 10 0 10 3 3 0 1 0 8 0 pfstitem 24 4 0 0 1 0 1 1 0 8 0 pfstkey 112 10 0 6 1 0 1 1 0 8 0 pfstate 328 5 0 3 1 0 1 1 0 8 0 pfrule 1360 18 0 12 1 0 1 1 0 8 0 art_heap8 4096 2 0 0 2 0 2 2 0 8 0 art_heap4 256 631 0 438 21 7 14 14 0 8 0 art_table 32 633 0 438 2 0 2 2 0 8 0 art_node 16 104 0 78 1 0 1 1 0 8 0 sysvmsgpl 40 8 0 6 1 0 1 1 0 8 0 semupl 112 2 0 2 1 1 0 1 0 8 0 semapl 112 86 0 76 1 0 1 1 0 8 0 shmpl 112 28 0 6 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 2229 0 834 88 0 88 88 0 8 0 ffsino 240 2229 0 834 83 0 83 83 0 8 0 nchpl 144 3229 0 1649 60 0 60 60 0 8 0 uvmvnodes 72 2501 0 0 46 0 46 46 0 8 0 vnodes 208 2501 0 0 132 0 132 132 0 8 0 namei 1024 9839 0 9839 5 4 1 1 0 8 1 vcpupl 1984 6 0 0 1 0 1 1 0 8 0 vmpool 528 7 0 1 1 0 1 1 0 8 0 pfiaddrpl 120 10 0 8 1 0 1 1 0 8 0 scxspl 192 10071 0 10071 2 1 1 1 0 8 1 plimitpl 152 51 0 44 1 0 1 1 0 8 0 sigapl 424 791 0 760 4 0 4 4 0 8 0 futexpl 56 12307 0 12306 5 4 1 1 0 8 0 knotepl 112 121 0 102 1 0 1 1 0 8 0 kqueuepl 144 78 0 76 1 0 1 1 0 8 0 pipepl 272 192 0 182 2 1 1 2 0 8 0 fdescpl 432 775 0 760 2 0 2 2 0 8 0 filepl 120 5415 0 5316 4 0 4 4 0 8 0 lockfpl 104 135 0 134 1 0 1 1 0 8 0 lockfspl 48 42 0 41 1 0 1 1 0 8 0 sessionpl 112 20 0 10 1 0 1 1 0 8 0 pgrppl 48 22 0 12 1 0 1 1 0 8 0 ucredpl 96 1322 0 1315 1 0 1 1 0 8 0 zombiepl 144 760 0 760 1 0 1 1 0 8 1 processpl 928 791 0 760 4 0 4 4 0 8 0 procpl 624 1522 0 1481 6 2 4 4 0 8 0 sosppl 128 8 0 8 3 3 0 1 0 8 0 sockpl 400 1389 0 1370 8 5 3 4 0 8 1 mcl64k 65536 71 0 71 3 2 1 2 0 8 1 mcl16k 16384 7 0 7 5 4 1 1 0 8 1 mcl12k 12288 18 0 18 8 8 0 1 0 8 0 mcl9k 9216 13 0 13 6 6 0 1 0 8 0 mcl8k 8192 23 0 23 8 7 1 1 0 8 1 mcl4k 4096 39 0 39 9 9 0 1 0 8 0 mcl2k2 2112 5 0 5 5 5 0 1 0 8 0 mcl2k 2048 75212 0 75158 23 15 8 21 0 8 0 mtagpl 96 62 0 52 2 1 1 1 0 8 0 mbufpl 256 139641 0 139535 211 183 28 171 0 8 9 bufpl 280 4774 0 136 332 0 332 332 0 8 0 anonpl 16 92152 0 76406 94 24 70 83 0 107 0 amapchunkpl 152 4582 0 4421 26 19 7 20 0 158 0 amappl16 192 3498 0 2562 62 14 48 57 0 8 0 amappl15 184 400 0 395 1 0 1 1 0 8 0 amappl14 176 126 0 123 1 0 1 1 0 8 0 amappl13 168 40 0 37 1 0 1 1 0 8 0 amappl12 160 16 0 11 1 0 1 1 0 8 0 amappl11 152 159 0 150 1 0 1 1 0 8 0 amappl10 144 118 0 110 1 0 1 1 0 8 0 amappl9 136 416 0 415 1 0 1 1 0 8 0 amappl8 128 390 0 342 2 0 2 2 0 8 0 amappl7 120 223 0 207 1 0 1 1 0 8 0 amappl6 112 27 0 20 1 0 1 1 0 8 0 amappl5 104 607 0 591 1 0 1 1 0 8 0 amappl4 96 565 0 533 1 0 1 1 0 8 0 amappl3 88 236 0 231 1 0 1 1 0 8 0 amappl2 80 5586 0 5511 2 0 2 2 0 8 0 amappl1 72 23375 0 22952 23 13 10 17 0 8 0 amappl 80 1790 0 1740 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 30 0 6 1 0 1 1 0 8 0 uaddrrnd 24 782 0 761 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 782 0 761 1 0 1 1 0 8 0 vmmpekpl 168 8922 0 8892 2 0 2 2 0 8 0 vmmpepl 168 99329 0 97156 176 81 95 126 0 357 0 vmsppl 272 781 0 761 2 0 2 2 0 8 0 pdppl 4096 1570 0 1528 8 2 6 6 0 8 0 pvpl 32 270788 0 252195 226 65 161 197 0 265 0 pmappl 200 781 0 761 2 0 2 2 0 8 0 extentpl 40 53 0 36 1 0 1 1 0 8 0 phpool 112 491 0 243 13 5 8 12 0 8 0 ddb> machine ddbcpu 0 No such command ddb> trace ifa_update_broadaddr(ffff800000ad7000,ffff800000aeb700,ffff80001e7db9e0) at ifa_update_broadaddr+0x1f sys/net/if.c:3070 in_ioctl(80206913,ffff80001e7db9d0,ffff800000ad7000,1) at in_ioctl+0x5eb sys/netinet/in.c:320 ifioctl(fffffd806b638320,80206913,ffff80001e7db9d0,ffff80001d6c3af8) at ifioctl+0xe60 sys/net/if.c:2282 sys_ioctl(ffff80001d6c3af8,ffff80001e7dbae8,ffff80001e7dbb30) at sys_ioctl+0x4a1 syscall(ffff80001e7dbbb0) at syscall+0x507 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x95410c14130, count: -6 ddb> machine ddbcpu 1 No such command ddb> trace ifa_update_broadaddr(ffff800000ad7000,ffff800000aeb700,ffff80001e7db9e0) at ifa_update_broadaddr+0x1f sys/net/if.c:3070 in_ioctl(80206913,ffff80001e7db9d0,ffff800000ad7000,1) at in_ioctl+0x5eb sys/netinet/in.c:320 ifioctl(fffffd806b638320,80206913,ffff80001e7db9d0,ffff80001d6c3af8) at ifioctl+0xe60 sys/net/if.c:2282 sys_ioctl(ffff80001d6c3af8,ffff80001e7dbae8,ffff80001e7dbb30) at sys_ioctl+0x4a1 syscall(ffff80001e7dbbb0) at syscall+0x507 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x95410c14130, count: -6