uvm_fault(0xfffffd805825f120, 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(0xfffffd805825f120, 0x0, 0, 1) -> e ifa_update_broadaddr(ffff800000ad4000,ffff800000b10e00,ffff80001d77faf0) at ifa_update_broadaddr+0x1f sys/net/if.c:3070 end trace frame: 0xffff80001d77fa10, count: 0 ddb> trace ifa_update_broadaddr(ffff800000ad4000,ffff800000b10e00,ffff80001d77faf0) at ifa_update_broadaddr+0x1f sys/net/if.c:3070 in_ioctl(80206913,ffff80001d77fae0,ffff800000ad4000,1) at in_ioctl+0x5eb sys/netinet/in.c:320 ifioctl(fffffd806933ec80,80206913,ffff80001d77fae0,ffff80001d6c2c48) at ifioctl+0xe60 sys/net/if.c:2282 sys_ioctl(ffff80001d6c2c48,ffff80001d77fbf8,ffff80001d77fc40) at sys_ioctl+0x4a1 syscall(ffff80001d77fcc0) at syscall+0x507 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x3c5a9ac7f50, count: -6 ddb> show registers rdi 0xffffffff814c175b ifa_update_broadaddr+0x1b rsi 0x4b rbp 0xffff80001d77f970 rbx 0x10 rdx 0x4c rcx 0xffff80001d7ae000 rax 0xffff80001d7ae000 r8 0xffffffff817e8fb7 in_ioctl+0x387 r9 0x7 r10 0x3 r11 0xb6e331426e9892c9 r12 0xffff80001d77faf0 r13 0 r14 0xffff80001d77faf0 r15 0 rip 0xffffffff814c175f ifa_update_broadaddr+0x1f cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff80001d77f930 ss 0x10 ifa_update_broadaddr+0x1f: movzbl 0(%r15),%r12d ddb> show proc PROC (syz-executor.0) pid=318699 stat=onproc flags process=0 proc=4000000 pri=32, usrpri=66, nice=20 forw=0xffffffffffffffff, list=0xffff80001d6c3878,0xffffffff827e55d8 process=0xffff80001d707978 user=0xffff80001d77a000, vmspace=0xfffffd805825f120 estcpu=33, cpticks=0, pctcpu=0.0 user=0, sys=0, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 29362 79523 83199 0 2 0 syz-executor.0 *29362 318699 83199 0 7 0x4000000 syz-executor.0 79591 161134 8988 0 3 0x82 piperd syz-executor.1 80624 133315 0 0 3 0x14200 bored sosplice 83199 77069 8988 0 3 0x82 nanosleep syz-executor.0 8988 513706 30941 0 3 0x82 thrsleep syz-fuzzer 8988 303922 30941 0 3 0x4000082 nanosleep syz-fuzzer 8988 52586 30941 0 3 0x4000082 thrsleep syz-fuzzer 8988 303107 30941 0 3 0x4000082 thrsleep syz-fuzzer 8988 125203 30941 0 2 0x4000002 syz-fuzzer 8988 106113 30941 0 3 0x4000082 thrsleep syz-fuzzer 8988 265449 30941 0 3 0x4000082 thrsleep syz-fuzzer 8988 470386 30941 0 3 0x4000082 thrsleep syz-fuzzer 30941 114601 74048 0 3 0x10008a pause ksh 74048 125567 91083 0 3 0x92 select sshd 12099 309763 1 0 3 0x100083 ttyin getty 91083 115345 1 0 3 0x80 select sshd 86637 144292 17377 73 3 0x100090 kqread syslogd 17377 272324 1 0 3 0x100082 netio syslogd 50621 110325 1 77 3 0x100090 poll dhclient 78630 26422 1 0 3 0x80 poll dhclient 31203 11159 0 0 3 0x14200 bored smr 11969 397262 0 0 2 0x14200 zerothread 37199 185298 0 0 3 0x14200 aiodoned aiodoned 4588 318787 0 0 3 0x14200 syncer update 87632 57036 0 0 3 0x14200 cleaner cleaner 68317 120564 0 0 3 0x14200 reaper reaper 36150 205857 0 0 3 0x14200 pgdaemon pagedaemon 47401 486210 0 0 3 0x14200 bored crynlk 7046 81675 0 0 3 0x14200 bored crypto 87955 168303 0 0 3 0x40014200 acpi0 acpi0 40045 335376 0 0 3 0x14200 bored softnet 75790 349554 0 0 3 0x14200 bored systqmp 53921 416684 0 0 3 0x14200 bored systq 1412 380323 0 0 3 0x40014200 bored softclock 75568 360570 0 0 3 0x40014200 idle0 1 425379 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 9513 6373K 6751K 78643K 11753 0 pcb 13 8K 8K 78643K 180 0 rtable 130 10K 12K 78643K 1037 0 ifaddr 98 20K 20K 78643K 387 0 sysctl 1 1K 1K 78643K 1 0 counters 21 16K 16K 78643K 43 0 ioctlops 0 0K 4K 78643K 177 0 iov 0 0K 24K 78643K 138 0 mount 1 1K 1K 78643K 1 0 vnodes 1221 77K 77K 78643K 1625 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 5K 78643K 9 0 VM map 2 0K 0K 78643K 2 0 sem 12 0K 1K 78643K 148 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1809 195K 288K 78643K 12938 0 file desc 5 13K 25K 78643K 868 0 sigio 0 0K 0K 78643K 20 0 proc 50 38K 63K 78643K 509 0 subproc 32 2K 2K 78643K 51 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 0 0K 0K 78643K 74 0 in_multi 105 4K 4K 78643K 349 0 ether_multi 1 0K 0K 78643K 35 0 mrt 3 0K 0K 78643K 12 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 265 0 pfkey data 0 0K 1K 78643K 6 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 88K 88K 78643K 2899 0 UVM aobj 38 4K 4K 78643K 47 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 1K 78643K 159 0 NDP 13 0K 0K 78643K 68 0 temp 141 3876K 3951K 78643K 28020 0 kqueue 3 4K 25K 78643K 80 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 95 0 93 1 0 1 1 0 8 0 rtentry 112 145 0 105 2 0 2 2 0 8 0 unpcb 120 448 0 440 1 0 1 1 0 8 0 syncache 264 13 0 13 5 5 0 1 0 8 0 tcpqe 32 68 0 68 3 3 0 1 0 8 0 tcpcb 544 384 0 379 1 0 1 1 0 8 0 ipq 40 1 0 1 1 1 0 1 0 8 0 ipqe 40 45 0 45 1 1 0 1 0 8 0 inpcb 296 2373 0 2365 4 2 2 2 0 8 1 rttmr 72 4 0 4 3 3 0 1 0 8 0 ip6q 72 1 0 1 1 1 0 1 0 8 0 ip6af 40 3 0 3 1 1 0 1 0 8 0 nd6 48 44 0 40 1 0 1 1 0 8 0 pkpcb 40 8 0 8 4 4 0 1 0 8 0 swfcl 56 2 0 0 1 0 1 1 0 8 0 ppxss 1128 4 0 4 3 3 0 1 0 8 0 pfosfp 40 1 0 0 1 0 1 1 0 8 0 pfosfpen 112 1 0 0 1 0 1 1 0 8 0 pfrktable 1344 203 0 192 4 3 1 2 0 8 0 pftag 88 43 0 40 1 0 1 1 0 8 0 pfrule 1360 58 0 42 2 0 2 2 0 8 0 art_heap8 4096 2 0 0 2 0 2 2 0 8 0 art_heap4 256 1044 0 843 22 5 17 17 0 8 3 art_table 32 1046 0 843 3 0 3 3 0 8 0 art_node 16 144 0 107 1 0 1 1 0 8 0 sysvmsgpl 40 14 0 8 1 0 1 1 0 8 0 semupl 112 5 0 5 1 1 0 1 0 8 0 semapl 112 136 0 126 1 0 1 1 0 8 0 shmpl 112 44 0 9 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 2587 0 1189 88 0 88 88 0 8 0 ffsino 240 2587 0 1189 83 0 83 83 0 8 0 nchpl 144 4015 0 2427 60 0 60 60 0 8 0 uvmvnodes 72 2902 0 0 53 0 53 53 0 8 0 vnodes 208 2902 0 0 153 0 153 153 0 8 0 namei 1024 11122 0 11122 3 2 1 1 0 8 1 vcpupl 1984 8 0 0 1 0 1 1 0 8 0 vmpool 528 8 0 0 1 0 1 1 0 8 0 pfiaddrpl 120 72 0 64 1 0 1 1 0 8 0 scxspl 192 12318 0 12318 2 1 1 1 0 8 1 plimitpl 152 68 0 61 1 0 1 1 0 8 0 sigapl 424 1052 0 1023 4 0 4 4 0 8 0 futexpl 56 19280 0 19280 3 2 1 1 0 8 1 knotepl 112 226 0 207 2 1 1 2 0 8 0 kqueuepl 144 156 0 151 1 0 1 1 0 8 0 pipepl 272 186 0 176 2 1 1 2 0 8 0 fdescpl 432 1037 0 1023 2 0 2 2 0 8 0 filepl 120 7260 0 7164 5 1 4 4 0 8 1 lockfpl 104 193 0 192 1 0 1 1 0 8 0 lockfspl 48 71 0 70 1 0 1 1 0 8 0 sessionpl 112 18 0 8 1 0 1 1 0 8 0 pgrppl 48 22 0 12 1 0 1 1 0 8 0 ucredpl 96 717 0 710 1 0 1 1 0 8 0 zombiepl 144 1023 0 1023 2 1 1 1 0 8 1 processpl 928 1052 0 1023 4 0 4 4 0 8 0 procpl 624 2094 0 2057 4 0 4 4 0 8 0 sosppl 128 15 0 15 4 4 0 1 0 8 0 sockpl 400 2933 0 2915 8 4 4 4 0 8 2 mcl64k 65536 93 0 93 3 2 1 1 0 8 1 mcl16k 16384 8 0 8 4 4 0 1 0 8 0 mcl12k 12288 25 0 25 5 5 0 1 0 8 0 mcl9k 9216 17 0 17 4 3 1 1 0 8 1 mcl8k 8192 31 0 31 3 3 0 1 0 8 0 mcl4k 4096 102 0 102 3 2 1 1 0 8 1 mcl2k2 2112 5 0 5 1 1 0 1 0 8 0 mcl2k 2048 80497 0 80452 17 10 7 12 0 8 0 mtagpl 96 109 0 43 3 1 2 2 0 8 0 mbufpl 256 135685 0 135374 56 30 26 41 0 8 0 bufpl 280 6708 0 1356 383 0 383 383 0 8 0 anonpl 16 129000 0 112530 98 22 76 86 0 107 0 amapchunkpl 152 5552 0 5409 24 17 7 19 0 158 0 amappl16 192 5689 0 4659 82 29 53 60 0 8 1 amappl15 184 338 0 336 1 0 1 1 0 8 0 amappl14 176 22 0 19 1 0 1 1 0 8 0 amappl13 168 42 0 38 1 0 1 1 0 8 0 amappl12 160 13 0 11 1 0 1 1 0 8 0 amappl11 152 47 0 37 1 0 1 1 0 8 0 amappl10 144 765 0 757 1 0 1 1 0 8 0 amappl9 136 443 0 441 1 0 1 1 0 8 0 amappl8 128 424 0 383 2 0 2 2 0 8 0 amappl7 120 532 0 517 1 0 1 1 0 8 0 amappl6 112 26 0 20 1 0 1 1 0 8 0 amappl5 104 982 0 970 1 0 1 1 0 8 0 amappl4 96 444 0 418 1 0 1 1 0 8 0 amappl3 88 137 0 132 1 0 1 1 0 8 0 amappl2 80 7758 0 7690 2 0 2 2 0 8 0 amappl1 72 27396 0 26991 24 15 9 17 0 8 0 amappl 80 2364 0 2317 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 46 0 9 1 0 1 1 0 8 0 uaddrrnd 24 1045 0 1023 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 1045 0 1023 1 0 1 1 0 8 0 vmmpekpl 168 9760 0 9730 2 0 2 2 0 8 0 vmmpepl 168 128393 0 126250 181 81 100 147 0 357 6 vmsppl 272 1044 0 1023 3 1 2 2 0 8 0 pdppl 4096 2096 0 2054 7 1 6 6 0 8 0 pvpl 32 373165 0 353914 282 106 176 276 0 265 2 pmappl 200 1044 0 1023 2 0 2 2 0 8 0 extentpl 40 53 0 36 1 0 1 1 0 8 0 phpool 112 316 0 67 8 0 8 8 0 8 0 ddb> machine ddbcpu 0 No such command ddb> trace ifa_update_broadaddr(ffff800000ad4000,ffff800000b10e00,ffff80001d77faf0) at ifa_update_broadaddr+0x1f sys/net/if.c:3070 in_ioctl(80206913,ffff80001d77fae0,ffff800000ad4000,1) at in_ioctl+0x5eb sys/netinet/in.c:320 ifioctl(fffffd806933ec80,80206913,ffff80001d77fae0,ffff80001d6c2c48) at ifioctl+0xe60 sys/net/if.c:2282 sys_ioctl(ffff80001d6c2c48,ffff80001d77fbf8,ffff80001d77fc40) at sys_ioctl+0x4a1 syscall(ffff80001d77fcc0) at syscall+0x507 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x3c5a9ac7f50, count: -6 ddb> machine ddbcpu 1 No such command ddb> trace ifa_update_broadaddr(ffff800000ad4000,ffff800000b10e00,ffff80001d77faf0) at ifa_update_broadaddr+0x1f sys/net/if.c:3070 in_ioctl(80206913,ffff80001d77fae0,ffff800000ad4000,1) at in_ioctl+0x5eb sys/netinet/in.c:320 ifioctl(fffffd806933ec80,80206913,ffff80001d77fae0,ffff80001d6c2c48) at ifioctl+0xe60 sys/net/if.c:2282 sys_ioctl(ffff80001d6c2c48,ffff80001d77fbf8,ffff80001d77fc40) at sys_ioctl+0x4a1 syscall(ffff80001d77fcc0) at syscall+0x507 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x3c5a9ac7f50, count: -6