uvm_fault(0xfffffd806bc09000, 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(0xfffffd806bc09000, 0x0, 0, 1) -> e ifa_update_broadaddr(ffff800000ac4800,ffff800000afcd00,ffff80001e7bd420) at ifa_update_broadaddr+0x1f sys/net/if.c:3070 end trace frame: 0xffff80001e7bd340, count: 0 ddb> trace ifa_update_broadaddr(ffff800000ac4800,ffff800000afcd00,ffff80001e7bd420) at ifa_update_broadaddr+0x1f sys/net/if.c:3070 in_ioctl(80206913,ffff80001e7bd410,ffff800000ac4800,1) at in_ioctl+0x5eb sys/netinet/in.c:320 ifioctl(fffffd8065c8daf0,80206913,ffff80001e7bd410,ffff80001d6c24f8) at ifioctl+0xe60 sys/net/if.c:2282 sys_ioctl(ffff80001d6c24f8,ffff80001e7bd528,ffff80001e7bd570) at sys_ioctl+0x4a1 syscall(ffff80001e7bd5f0) at syscall+0x507 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x8d5f9a55d30, count: -6 ddb> show registers rdi 0xffffffff814c175b ifa_update_broadaddr+0x1b rsi 0x4d rbp 0xffff80001e7bd2a0 rbx 0x10 rdx 0x4e rcx 0xffff80001d788000 rax 0xffff80001d788000 r8 0xffffffff817e8fb7 in_ioctl+0x387 r9 0x7 r10 0x3 r11 0x5fe2a6b31bae4e86 r12 0xffff80001e7bd420 r13 0 r14 0xffff80001e7bd420 r15 0 rip 0xffffffff814c175f ifa_update_broadaddr+0x1f cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff80001e7bd260 ss 0x10 ifa_update_broadaddr+0x1f: movzbl 0(%r15),%r12d ddb> show proc PROC (syz-executor.0) pid=98387 stat=onproc flags process=0 proc=4000000 pri=32, usrpri=86, nice=20 forw=0xffffffffffffffff, list=0xffff80001d6c2018,0xffffffff827e55d8 process=0xffff80001d6c4e90 user=0xffff80001e7b8000, vmspace=0xfffffd806bc09000 estcpu=36, cpticks=1, pctcpu=0.0 user=0, sys=1, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 94180 336803 50820 0 2 0 syz-executor.0 *94180 98387 50820 0 7 0x4000000 syz-executor.0 5372 511706 0 0 3 0x14200 acct acct 60468 466150 0 0 3 0x14200 bored sosplice 97740 417513 4556 0 2 0x2 syz-executor.1 50820 141525 4556 0 2 0x482 syz-executor.0 4556 392571 33410 0 3 0x82 thrsleep syz-fuzzer 4556 392118 33410 0 3 0x4000082 nanosleep syz-fuzzer 4556 455776 33410 0 3 0x4000082 thrsleep syz-fuzzer 4556 517641 33410 0 3 0x4000082 thrsleep syz-fuzzer 4556 254198 33410 0 3 0x4000082 kqread syz-fuzzer 4556 46728 33410 0 3 0x4000082 thrsleep syz-fuzzer 4556 186014 33410 0 3 0x4000082 thrsleep syz-fuzzer 4556 197066 33410 0 3 0x4000082 thrsleep syz-fuzzer 33410 300076 94161 0 3 0x10008a pause ksh 94161 195725 79731 0 3 0x92 select sshd 82177 403698 1 0 3 0x100083 ttyin getty 79731 230987 1 0 3 0x80 select sshd 71176 98964 26958 73 3 0x100090 kqread syslogd 26958 493939 1 0 3 0x100082 netio syslogd 33024 425324 1 77 3 0x100090 poll dhclient 14035 382671 1 0 3 0x80 poll dhclient 62046 507796 0 0 3 0x14200 bored smr 14285 257780 0 0 2 0x14200 zerothread 50681 486505 0 0 3 0x14200 aiodoned aiodoned 27713 32096 0 0 3 0x14200 syncer update 47816 461636 0 0 3 0x14200 cleaner cleaner 59734 9254 0 0 3 0x14200 reaper reaper 2590 176080 0 0 3 0x14200 pgdaemon pagedaemon 12224 344420 0 0 3 0x14200 bored crynlk 73655 512377 0 0 3 0x14200 bored crypto 74171 135699 0 0 3 0x40014200 acpi0 acpi0 54611 478443 0 0 3 0x14200 bored softnet 36683 161046 0 0 3 0x14200 bored systqmp 21914 257472 0 0 3 0x14200 bored systq 10689 393349 0 0 2 0x40014200 softclock 92181 179403 0 0 3 0x40014200 idle0 1 138858 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 9527 6487K 6662K 78643K 11219 0 pcb 13 8K 8K 78643K 111 0 rtable 115 4K 4K 78643K 381 0 ifaddr 94 18K 18K 78643K 160 0 sysctl 2 0K 0K 78643K 2 0 counters 21 16K 16K 78643K 29 0 ioctlops 0 0K 4K 78643K 95 0 iov 0 0K 16K 78643K 88 0 mount 1 1K 1K 78643K 1 0 vnodes 1224 77K 77K 78643K 1443 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 5K 78643K 4 0 VM map 2 0K 0K 78643K 2 0 sem 12 1K 1K 78643K 25 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1809 195K 288K 78643K 12938 0 file desc 5 13K 25K 78643K 479 0 sigio 0 0K 0K 78643K 20 0 proc 49 38K 62K 78643K 452 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 48 0 in_multi 89 4K 4K 78643K 218 0 ether_multi 1 0K 0K 78643K 16 0 mrt 1 0K 0K 78643K 12 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 43 201K 201K 78643K 43 0 exec 0 0K 1K 78643K 229 0 pfkey data 0 0K 1K 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 135 39K 55K 78643K 1941 0 UVM aobj 16 2K 2K 78643K 16 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 85 0 NDP 14 0K 0K 78643K 45 0 temp 112 3856K 3921K 78643K 9150 0 kqueue 3 4K 18K 78643K 29 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 9 0 2 1 0 1 1 0 8 0 rtpcb 80 47 0 45 1 0 1 1 0 8 0 rtentry 112 87 0 41 2 0 2 2 0 8 0 unpcb 120 179 0 171 1 0 1 1 0 8 0 syncache 264 6 0 6 2 2 0 1 0 8 0 sackhl 24 2 0 2 1 1 0 1 0 8 0 tcpqe 32 128 0 128 1 1 0 1 0 8 0 tcpcb 544 183 0 178 1 0 1 1 0 8 0 ipq 40 4 0 4 2 1 1 1 0 8 1 ipqe 40 96 0 96 2 1 1 1 0 8 1 inpcb 296 1727 0 1719 3 1 2 2 0 8 1 rttmr 72 3 0 3 2 2 0 1 0 8 0 nd6 48 30 0 24 1 0 1 1 0 8 0 pkpcb 40 4 0 4 2 1 1 1 0 8 1 ppxss 1128 2 0 2 2 1 1 1 0 8 1 art_heap8 4096 2 0 0 2 0 2 2 0 8 0 art_heap4 256 313 0 98 15 0 15 15 0 8 1 art_table 32 315 0 98 2 0 2 2 0 8 0 art_node 16 86 0 46 1 0 1 1 0 8 0 sysvmsgpl 40 4 0 2 1 0 1 1 0 8 0 semupl 112 1 0 1 1 1 0 1 0 8 0 semapl 112 19 0 9 1 0 1 1 0 8 0 shmpl 112 13 0 0 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 2084 0 688 88 0 88 88 0 8 0 ffsino 240 2084 0 688 83 0 83 83 0 8 0 nchpl 144 2913 0 1323 60 0 60 60 0 8 0 uvmvnodes 72 2262 0 0 42 0 42 42 0 8 0 vnodes 208 2262 0 0 120 0 120 120 0 8 0 namei 1024 7811 0 7811 2 1 1 1 0 8 1 vcpupl 1984 2 0 0 1 0 1 1 0 8 0 vmpool 528 4 0 2 1 0 1 1 0 8 0 scsiplug 64 2 0 2 1 0 1 1 0 8 1 scxspl 192 9088 0 9088 1 0 1 1 0 8 1 plimitpl 152 41 0 34 1 0 1 1 0 8 0 sigapl 424 667 0 637 4 0 4 4 0 8 0 futexpl 56 11085 0 11085 2 1 1 1 0 8 1 knotepl 112 141 0 122 2 1 1 2 0 8 0 kqueuepl 144 60 0 58 1 0 1 1 0 8 0 pipepl 272 146 0 136 1 0 1 1 0 8 0 fdescpl 432 651 0 637 2 0 2 2 0 8 0 filepl 120 4655 0 4559 4 0 4 4 0 8 1 lockfpl 104 150 0 149 1 0 1 1 0 8 0 lockfspl 48 54 0 53 1 0 1 1 0 8 0 sessionpl 112 17 0 7 1 0 1 1 0 8 0 pgrppl 48 23 0 13 1 0 1 1 0 8 0 ucredpl 96 340 0 333 1 0 1 1 0 8 0 zombiepl 144 637 0 637 1 0 1 1 0 8 1 processpl 928 667 0 637 4 0 4 4 0 8 0 procpl 624 1214 0 1176 4 0 4 4 0 8 0 sosppl 128 5 0 5 3 2 1 1 0 8 1 sockpl 400 1957 0 1939 4 1 3 4 0 8 1 mcl64k 65536 808 0 808 72 27 45 65 0 8 45 mcl16k 16384 2 0 2 1 0 1 1 0 8 1 mcl12k 12288 7 0 7 3 3 0 1 0 8 0 mcl9k 9216 7 0 7 2 1 1 1 0 8 1 mcl8k 8192 13 0 13 3 2 1 1 0 8 1 mcl4k 4096 61 0 61 3 2 1 1 0 8 1 mcl2k 2048 76337 0 76288 17 10 7 13 0 8 0 mtagpl 96 42 0 26 2 1 1 1 0 8 0 mbufpl 256 125857 0 125663 69 45 24 43 0 8 3 bufpl 280 5877 0 525 383 0 383 383 0 8 0 anonpl 16 91963 0 75068 86 3 83 84 0 107 10 amapchunkpl 152 3449 0 3314 23 8 15 20 0 158 9 amappl16 192 4137 0 3151 77 20 57 62 0 8 7 amappl15 184 240 0 235 1 0 1 1 0 8 0 amappl14 176 25 0 21 1 0 1 1 0 8 0 amappl13 168 26 0 23 1 0 1 1 0 8 0 amappl12 160 10 0 7 2 1 1 1 0 8 0 amappl11 152 50 0 41 1 0 1 1 0 8 0 amappl10 144 12 0 8 1 0 1 1 0 8 0 amappl9 136 544 0 542 1 0 1 1 0 8 0 amappl8 128 558 0 510 2 0 2 2 0 8 0 amappl7 120 108 0 96 1 0 1 1 0 8 0 amappl6 112 24 0 19 1 0 1 1 0 8 0 amappl5 104 680 0 669 1 0 1 1 0 8 0 amappl4 96 422 0 396 1 0 1 1 0 8 0 amappl3 88 114 0 108 1 0 1 1 0 8 0 amappl2 80 4624 0 4557 2 0 2 2 0 8 0 amappl1 72 20495 0 20085 24 15 9 17 0 8 0 amappl 80 1443 0 1400 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 15 0 0 1 0 1 1 0 8 0 uaddrrnd 24 655 0 639 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 655 0 639 1 0 1 1 0 8 0 vmmpekpl 168 7862 0 7831 2 0 2 2 0 8 0 vmmpepl 168 84781 0 82685 134 28 106 113 0 357 13 vmsppl 272 654 0 639 3 1 2 2 0 8 1 pdppl 4096 1316 0 1280 6 1 5 6 0 8 0 pvpl 32 273270 0 253358 253 14 239 252 0 265 71 pmappl 200 654 0 639 1 0 1 1 0 8 0 extentpl 40 53 0 36 1 0 1 1 0 8 0 phpool 112 379 0 92 10 0 10 10 0 8 0 ddb> machine ddbcpu 0 No such command ddb> trace ifa_update_broadaddr(ffff800000ac4800,ffff800000afcd00,ffff80001e7bd420) at ifa_update_broadaddr+0x1f sys/net/if.c:3070 in_ioctl(80206913,ffff80001e7bd410,ffff800000ac4800,1) at in_ioctl+0x5eb sys/netinet/in.c:320 ifioctl(fffffd8065c8daf0,80206913,ffff80001e7bd410,ffff80001d6c24f8) at ifioctl+0xe60 sys/net/if.c:2282 sys_ioctl(ffff80001d6c24f8,ffff80001e7bd528,ffff80001e7bd570) at sys_ioctl+0x4a1 syscall(ffff80001e7bd5f0) at syscall+0x507 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x8d5f9a55d30, count: -6 ddb> machine ddbcpu 1 No such command ddb> trace ifa_update_broadaddr(ffff800000ac4800,ffff800000afcd00,ffff80001e7bd420) at ifa_update_broadaddr+0x1f sys/net/if.c:3070 in_ioctl(80206913,ffff80001e7bd410,ffff800000ac4800,1) at in_ioctl+0x5eb sys/netinet/in.c:320 ifioctl(fffffd8065c8daf0,80206913,ffff80001e7bd410,ffff80001d6c24f8) at ifioctl+0xe60 sys/net/if.c:2282 sys_ioctl(ffff80001d6c24f8,ffff80001e7bd528,ffff80001e7bd570) at sys_ioctl+0x4a1 syscall(ffff80001e7bd5f0) at syscall+0x507 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x8d5f9a55d30, count: -6