uvm_fault(0xfffffd80685af338, 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(0xfffffd80685af338, 0x0, 0, 1) -> e ifa_update_broadaddr(ffff800000ac6800,ffff800000afc300,ffff80001e7b8e20) at ifa_update_broadaddr+0x1f sys/net/if.c:3070 end trace frame: 0xffff80001e7b8d40, count: 0 ddb> trace ifa_update_broadaddr(ffff800000ac6800,ffff800000afc300,ffff80001e7b8e20) at ifa_update_broadaddr+0x1f sys/net/if.c:3070 in_ioctl(80206913,ffff80001e7b8e10,ffff800000ac6800,1) at in_ioctl+0x5eb sys/netinet/in.c:320 ifioctl(fffffd8063956960,80206913,ffff80001e7b8e10,ffff80001d6c2c48) at ifioctl+0xe60 sys/net/if.c:2282 sys_ioctl(ffff80001d6c2c48,ffff80001e7b8f28,ffff80001e7b8f70) at sys_ioctl+0x4a1 syscall(ffff80001e7b8ff0) at syscall+0x507 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xef77a145570, count: -6 ddb> show registers rdi 0xffffffff81b9872b ifa_update_broadaddr+0x1b rsi 0x46 rbp 0xffff80001e7b8ca0 rbx 0x10 rdx 0x47 rcx 0xffff80001f99e000 rax 0xffff80001f99e000 r8 0xffffffff815d8f87 in_ioctl+0x387 r9 0x7 r10 0x3 r11 0x4052ac52f78dfc58 r12 0xffff80001e7b8e20 r13 0 r14 0xffff80001e7b8e20 r15 0 rip 0xffffffff81b9872f ifa_update_broadaddr+0x1f cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff80001e7b8c60 ss 0x10 ifa_update_broadaddr+0x1f: movzbl 0(%r15),%r12d ddb> show proc PROC (syz-executor.1) pid=60810 stat=onproc flags process=0 proc=4000000 pri=32, usrpri=50, nice=20 forw=0xffffffffffffffff, list=0xffff80001d6c2768,0xffffffff82828da8 process=0xffff80001d6eaeb0 user=0xffff80001e7b4000, vmspace=0xfffffd80685af338 estcpu=1, cpticks=0, pctcpu=0.0 user=0, sys=0, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 72240 462740 3039 0 2 0 syz-executor.1 *72240 60810 3039 0 7 0x4000000 syz-executor.1 50580 32582 7503 0 2 0 syz-executor.0 50580 522445 7503 0 3 0x4000080 fsleep syz-executor.0 16955 215631 1 0 3 0x100083 ttyin getty 73792 425930 0 0 3 0x14200 acct acct 26042 20995 0 0 3 0x14280 nfsidl nfsio 52277 40220 0 0 3 0x14280 nfsidl nfsio 74650 286126 0 0 3 0x14280 nfsidl nfsio 94398 521550 0 0 3 0x14280 nfsidl nfsio 18211 357150 0 0 3 0x14280 nfsidl nfsio 6581 175644 0 0 3 0x14280 nfsidl nfsio 40495 23360 0 0 3 0x14280 nfsidl nfsio 8163 113828 0 0 3 0x14280 nfsidl nfsio 22537 311493 0 0 3 0x14280 nfsidl nfsio 58974 71275 0 0 3 0x14280 nfsidl nfsio 67215 66693 0 0 3 0x14280 nfsidl nfsio 53241 147677 0 0 3 0x14280 nfsidl nfsio 10434 112356 0 0 3 0x14280 nfsidl nfsio 77814 411205 0 0 3 0x14280 nfsidl nfsio 19686 295966 0 0 3 0x14280 nfsidl nfsio 63492 177821 0 0 3 0x14280 nfsidl nfsio 87583 337583 0 0 3 0x14280 nfsidl nfsio 14796 52079 0 0 3 0x14280 nfsidl nfsio 40443 186233 0 0 3 0x14280 nfsidl nfsio 92211 232751 0 0 3 0x14280 nfsidl nfsio 62417 489922 0 0 3 0x14200 bored sosplice 7503 408163 11373 0 3 0x82 nanosleep syz-executor.0 3039 375525 11373 0 3 0x82 nanosleep syz-executor.1 11373 319306 49800 0 3 0x82 thrsleep syz-fuzzer 11373 280 49800 0 2 0x4000002 syz-fuzzer 11373 266933 49800 0 3 0x4000082 kqread syz-fuzzer 11373 445296 49800 0 3 0x4000082 thrsleep syz-fuzzer 11373 422951 49800 0 3 0x4000082 thrsleep syz-fuzzer 11373 383230 49800 0 3 0x4000082 thrsleep syz-fuzzer 11373 364949 49800 0 3 0x4000082 thrsleep syz-fuzzer 49800 19656 21162 0 3 0x10008a pause ksh 21162 251476 49885 0 3 0x92 select sshd 49885 310182 1 0 3 0x80 select sshd 92107 170949 32168 73 3 0x100090 kqread syslogd 32168 261392 1 0 3 0x100082 netio syslogd 99325 161345 1 77 3 0x100090 poll dhclient 31383 520222 1 0 3 0x80 poll dhclient 75135 242359 0 0 3 0x14200 bored smr 98203 392411 0 0 2 0x14200 zerothread 75869 130637 0 0 3 0x14200 aiodoned aiodoned 70783 158719 0 0 3 0x14200 syncer update 93189 296365 0 0 3 0x14200 cleaner cleaner 84067 384465 0 0 3 0x14200 reaper reaper 56654 297139 0 0 3 0x14200 pgdaemon pagedaemon 91688 507933 0 0 3 0x14200 bored crynlk 60232 104022 0 0 3 0x14200 bored crypto 47039 266319 0 0 3 0x40014200 acpi0 acpi0 92413 109251 0 0 3 0x14200 bored softnet 37146 344501 0 0 3 0x14200 bored systqmp 43441 258816 0 0 3 0x14200 bored systq 55778 243365 0 0 3 0x40014200 bored softclock 34690 259486 0 0 3 0x40014200 idle0 1 148251 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 9508 6344K 6794K 78643K 11369 0 pcb 13 8K 8K 78643K 119 0 rtable 143 13K 15K 78643K 596 0 ifaddr 93 19K 20K 78643K 223 0 sysctl 1 1K 1K 78643K 1 0 counters 21 16K 16K 78643K 28 0 ioctlops 0 0K 4K 78643K 107 0 iov 0 0K 24K 78643K 275 0 mount 1 1K 1K 78643K 1 0 vnodes 1216 76K 77K 78643K 1474 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 5K 78643K 10 0 VM map 2 0K 0K 78643K 2 0 sem 12 0K 0K 78643K 122 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1809 195K 288K 78643K 12938 0 file desc 6 17K 25K 78643K 528 0 sigio 0 0K 0K 78643K 13 0 proc 50 38K 63K 78643K 413 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 55 0 in_multi 73 3K 3K 78643K 189 0 ether_multi 1 0K 0K 78643K 19 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 246 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 138 56K 76K 78643K 2478 0 UVM aobj 27 6K 6K 78643K 29 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 84 0 NDP 12 0K 0K 78643K 33 0 temp 110 3860K 3924K 78643K 34156 0 kqueue 3 4K 12K 78643K 42 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 10 0 4 1 0 1 1 0 8 0 rtpcb 80 45 0 43 1 0 1 1 0 8 0 rtentry 112 78 0 36 2 0 2 2 0 8 0 unpcb 120 313 0 305 1 0 1 1 0 8 0 syncache 264 12 0 12 3 3 0 1 0 8 0 sackhl 24 1 0 1 1 1 0 1 0 8 0 tcpqe 32 171 0 171 1 1 0 1 0 8 0 tcpcb 544 215 0 210 1 0 1 1 0 8 0 inpcb 296 573 0 565 6 5 1 2 0 8 0 nd6 48 20 0 16 1 0 1 1 0 8 0 pkpcb 40 4 0 4 2 2 0 1 0 8 0 ppxss 1128 2 0 2 2 2 0 1 0 8 0 pfstscr 40 8 0 6 1 0 1 1 0 8 0 pfrktable 1344 130 0 111 3 1 2 2 0 8 0 pftag 88 19 0 16 3 2 1 1 0 8 0 pfstitem 24 2 0 0 1 0 1 1 0 8 0 pfstkey 112 10 0 8 1 0 1 1 0 8 0 pfstate 328 5 0 4 1 0 1 1 0 8 0 pfrule 1360 39 0 25 3 1 2 2 0 8 0 art_heap8 4096 2 0 0 2 0 2 2 0 8 0 art_heap4 256 241 0 51 14 0 14 14 0 8 0 art_table 32 243 0 51 2 0 2 2 0 8 0 art_node 16 77 0 38 1 0 1 1 0 8 0 sysvmsgpl 40 14 0 12 2 1 1 1 0 8 0 semupl 112 1 0 1 1 1 0 1 0 8 0 semapl 112 116 0 106 1 0 1 1 0 8 0 shmpl 112 26 0 2 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 2181 0 783 88 0 88 88 0 8 0 ffsino 240 2181 0 783 83 0 83 83 0 8 0 nchpl 144 3268 0 1663 60 0 60 60 0 8 0 uvmvnodes 72 2397 0 0 44 0 44 44 0 8 0 vnodes 208 2397 0 0 127 0 127 127 0 8 0 namei 1024 9099 0 9099 1 0 1 1 0 8 1 vcpupl 1984 3 0 0 1 0 1 1 0 8 0 vmpool 528 7 0 4 1 0 1 1 0 8 0 pfiaddrpl 120 54 0 38 2 1 1 1 0 8 0 scsiplug 64 1 0 1 1 1 0 1 0 8 0 scxspl 192 9989 0 9989 1 0 1 1 0 8 1 plimitpl 152 86 0 78 1 0 1 1 0 8 0 sigapl 424 737 0 686 6 0 6 6 0 8 0 futexpl 56 11870 0 11869 1 0 1 1 0 8 0 knotepl 112 105 0 86 1 0 1 1 0 8 0 kqueuepl 144 92 0 90 1 0 1 1 0 8 0 pipepl 272 484 0 474 6 4 2 2 0 8 1 fdescpl 432 701 0 686 2 0 2 2 0 8 0 filepl 120 5227 0 5126 4 0 4 4 0 8 0 lockfpl 104 415 0 414 1 0 1 1 0 8 0 lockfspl 48 115 0 114 1 0 1 1 0 8 0 sessionpl 112 18 0 8 1 0 1 1 0 8 0 pgrppl 48 24 0 14 1 0 1 1 0 8 0 ucredpl 96 603 0 595 1 0 1 1 0 8 0 zombiepl 144 686 0 686 1 0 1 1 0 8 1 processpl 928 737 0 686 7 0 7 7 0 8 0 procpl 624 1714 0 1655 7 2 5 6 0 8 0 sosppl 128 10 0 10 3 3 0 1 0 8 0 sockpl 400 940 0 922 4 1 3 4 0 8 1 mcl64k 65536 40 0 40 6 6 0 1 0 8 0 mcl16k 16384 5 0 5 4 4 0 1 0 8 0 mcl12k 12288 23 0 23 7 7 0 1 0 8 0 mcl9k 9216 10 0 10 5 5 0 1 0 8 0 mcl8k 8192 15 0 15 6 6 0 1 0 8 0 mcl4k 4096 54 0 54 7 6 1 1 0 8 1 mcl2k2 2112 2 0 2 2 2 0 1 0 8 0 mcl2k 2048 79040 0 78985 22 14 8 18 0 8 0 mtagpl 96 81 0 2 3 1 2 2 0 8 0 mbufpl 256 128438 0 128058 29 3 26 26 0 8 0 bufpl 280 5470 0 130 382 0 382 382 0 8 0 anonpl 16 85895 0 68599 98 25 73 87 0 107 0 amapchunkpl 152 5719 0 5566 54 38 16 20 0 158 9 amappl16 192 3704 0 2760 64 16 48 59 0 8 0 amappl15 184 1 0 0 1 0 1 1 0 8 0 amappl14 176 30 0 26 1 0 1 1 0 8 0 amappl13 168 285 0 280 1 0 1 1 0 8 0 amappl12 160 12 0 9 1 0 1 1 0 8 0 amappl11 152 46 0 37 1 0 1 1 0 8 0 amappl10 144 28 0 20 1 0 1 1 0 8 0 amappl9 136 610 0 607 1 0 1 1 0 8 0 amappl8 128 581 0 534 2 0 2 2 0 8 0 amappl7 120 111 0 98 1 0 1 1 0 8 0 amappl6 112 23 0 18 1 0 1 1 0 8 0 amappl5 104 648 0 633 1 0 1 1 0 8 0 amappl4 96 689 0 661 1 0 1 1 0 8 0 amappl3 88 138 0 133 1 0 1 1 0 8 0 amappl2 80 4807 0 4732 2 0 2 2 0 8 0 amappl1 72 22410 0 21981 23 14 9 17 0 8 0 amappl 80 1948 0 1901 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 28 0 2 1 0 1 1 0 8 0 uaddrrnd 24 708 0 690 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 708 0 690 1 0 1 1 0 8 0 vmmpekpl 168 10347 0 10315 2 0 2 2 0 8 0 vmmpepl 168 91343 0 89158 135 39 96 114 0 357 1 vmsppl 272 707 0 690 2 0 2 2 0 8 0 pdppl 4096 1422 0 1383 8 3 5 6 0 8 0 pvpl 32 250382 0 230182 238 52 186 206 0 265 19 pmappl 200 707 0 690 1 0 1 1 0 8 0 extentpl 40 53 0 36 1 0 1 1 0 8 0 phpool 112 298 0 52 8 0 8 8 0 8 0 ddb> machine ddbcpu 0 No such command ddb> trace ifa_update_broadaddr(ffff800000ac6800,ffff800000afc300,ffff80001e7b8e20) at ifa_update_broadaddr+0x1f sys/net/if.c:3070 in_ioctl(80206913,ffff80001e7b8e10,ffff800000ac6800,1) at in_ioctl+0x5eb sys/netinet/in.c:320 ifioctl(fffffd8063956960,80206913,ffff80001e7b8e10,ffff80001d6c2c48) at ifioctl+0xe60 sys/net/if.c:2282 sys_ioctl(ffff80001d6c2c48,ffff80001e7b8f28,ffff80001e7b8f70) at sys_ioctl+0x4a1 syscall(ffff80001e7b8ff0) at syscall+0x507 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xef77a145570, count: -6 ddb> machine ddbcpu 1 No such command ddb> trace ifa_update_broadaddr(ffff800000ac6800,ffff800000afc300,ffff80001e7b8e20) at ifa_update_broadaddr+0x1f sys/net/if.c:3070 in_ioctl(80206913,ffff80001e7b8e10,ffff800000ac6800,1) at in_ioctl+0x5eb sys/netinet/in.c:320 ifioctl(fffffd8063956960,80206913,ffff80001e7b8e10,ffff80001d6c2c48) at ifioctl+0xe60 sys/net/if.c:2282 sys_ioctl(ffff80001d6c2c48,ffff80001e7b8f28,ffff80001e7b8f70) at sys_ioctl+0x4a1 syscall(ffff80001e7b8ff0) at syscall+0x507 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xef77a145570, count: -6