uvm_fault(0xfffffd80676f7bc0, 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(0xfffffd80676f7bc0, 0x0, 0, 1) -> e ifa_update_broadaddr(ffff800000ac6000,ffff800000af1e00,ffff80001e8533b0) at ifa_update_broadaddr+0x1f sys/net/if.c:3070 end trace frame: 0xffff80001e8532d0, count: 0 ddb> trace ifa_update_broadaddr(ffff800000ac6000,ffff800000af1e00,ffff80001e8533b0) at ifa_update_broadaddr+0x1f sys/net/if.c:3070 in_ioctl(80206913,ffff80001e8533a0,ffff800000ac6000,1) at in_ioctl+0x5eb sys/netinet/in.c:320 ifioctl(fffffd806b530e20,80206913,ffff80001e8533a0,ffff80001d7793a0) at ifioctl+0xe60 sys/net/if.c:2282 sys_ioctl(ffff80001d7793a0,ffff80001e8534b8,ffff80001e853500) at sys_ioctl+0x4a1 syscall(ffff80001e853580) at syscall+0x507 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x548d19f5e50, count: -6 ddb> show registers rdi 0xffffffff810269ab ifa_update_broadaddr+0x1b rsi 0x37 rbp 0xffff80001e853230 rbx 0x10 rdx 0x38 rcx 0xffff80001efa6000 rax 0xffff80001efa6000 r8 0xffffffff81fca597 in_ioctl+0x387 r9 0x7 r10 0x3 r11 0x9795ffbccf4fee2f r12 0xffff80001e8533b0 r13 0 r14 0xffff80001e8533b0 r15 0 rip 0xffffffff810269af ifa_update_broadaddr+0x1f cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff80001e8531f0 ss 0x10 ifa_update_broadaddr+0x1f: movzbl 0(%r15),%r12d ddb> show proc PROC (syz-executor.0) pid=234165 stat=onproc flags process=0 proc=4000000 pri=32, usrpri=86, nice=20 forw=0xffffffffffffffff, list=0xffff80001d7789e0,0xffffffff82839180 process=0xffff80001e82b5f0 user=0xffff80001e84e000, vmspace=0xfffffd80676f7bc0 estcpu=36, cpticks=1, pctcpu=0.0 user=0, sys=1, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 16383 159897 4956 0 2 0 syz-executor.0 *16383 234165 4956 0 7 0x4000000 syz-executor.0 57789 481891 0 0 3 0x14200 bored sosplice 83353 373302 0 0 3 0x14280 nfsidl nfsio 25310 442649 0 0 3 0x14280 nfsidl nfsio 28212 294044 0 0 3 0x14280 nfsidl nfsio 80292 370128 0 0 3 0x14280 nfsidl nfsio 54195 291413 0 0 3 0x14280 nfsidl nfsio 2191 173555 0 0 3 0x14280 nfsidl nfsio 68568 342186 0 0 3 0x14280 nfsidl nfsio 30427 21262 0 0 3 0x14280 nfsidl nfsio 32319 1241 0 0 3 0x14280 nfsidl nfsio 52691 453952 0 0 3 0x14280 nfsidl nfsio 93485 509377 0 0 3 0x14280 nfsidl nfsio 92332 336086 0 0 3 0x14280 nfsidl nfsio 83063 126337 0 0 3 0x14280 nfsidl nfsio 88050 488360 0 0 3 0x14280 nfsidl nfsio 82830 351463 0 0 3 0x14280 nfsidl nfsio 48916 380881 0 0 3 0x14280 nfsidl nfsio 882 231257 0 0 3 0x14280 nfsidl nfsio 27133 119366 0 0 3 0x14280 nfsidl nfsio 29064 209427 0 0 3 0x14280 nfsidl nfsio 98043 388938 0 0 3 0x14280 nfsidl nfsio 4956 367408 33437 0 2 0x482 syz-executor.0 58586 76754 33437 0 3 0x82 nanosleep syz-executor.1 33437 400749 48287 0 2 0x482 syz-fuzzer 33437 388646 48287 0 3 0x4000082 thrsleep syz-fuzzer 33437 259169 48287 0 3 0x4000082 thrsleep syz-fuzzer 33437 283654 48287 0 3 0x4000082 thrsleep syz-fuzzer 33437 2016 48287 0 3 0x4000082 thrsleep syz-fuzzer 33437 172567 48287 0 3 0x4000082 kqread syz-fuzzer 33437 273664 48287 0 3 0x4000082 thrsleep syz-fuzzer 48287 43727 4958 0 3 0x10008a pause ksh 4958 479076 19219 0 3 0x92 select sshd 97939 2881 1 0 3 0x100083 ttyin getty 19219 342846 1 0 3 0x80 select sshd 53799 35153 39063 73 2 0x100090 syslogd 39063 222489 1 0 3 0x100082 netio syslogd 35017 509969 1 77 3 0x100090 poll dhclient 15296 244084 1 0 3 0x80 poll dhclient 90810 67588 0 0 3 0x14200 bored smr 7763 329248 0 0 2 0x14200 zerothread 92404 270561 0 0 3 0x14200 aiodoned aiodoned 79327 335536 0 0 3 0x14200 syncer update 96226 410162 0 0 3 0x14200 cleaner cleaner 89187 477386 0 0 3 0x14200 reaper reaper 83745 162727 0 0 3 0x14200 pgdaemon pagedaemon 78875 499508 0 0 3 0x14200 bored crynlk 65011 112884 0 0 3 0x14200 bored crypto 99191 214435 0 0 3 0x40014200 acpi0 acpi0 66798 144210 0 0 3 0x14200 bored softnet 41308 355271 0 0 3 0x14200 bored systqmp 84777 343284 0 0 3 0x14200 bored systq 5432 379577 0 0 3 0x40014200 bored softclock 75334 220837 0 0 3 0x40014200 idle0 1 323479 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 9511 6354K 7368K 78643K 11516 0 pcb 13 8K 8K 78643K 43 0 rtable 110 7K 10K 78643K 444 0 ifaddr 79 15K 16K 78643K 157 0 counters 21 16K 16K 78643K 27 0 ioctlops 0 0K 4K 78643K 55 0 iov 0 0K 16K 78643K 51 0 mount 1 1K 1K 78643K 1 0 vnodes 1223 77K 77K 78643K 1452 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 5K 78643K 5 0 VM map 2 0K 0K 78643K 2 0 sem 12 0K 1K 78643K 51 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1809 195K 288K 78643K 12938 0 file desc 5 13K 25K 78643K 211 0 sigio 0 0K 0K 78643K 2 0 proc 49 38K 54K 78643K 384 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 10 0 in_multi 42 2K 2K 78643K 78 0 ether_multi 1 0K 0K 78643K 2 0 mrt 0 0K 0K 78643K 1 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 55 254K 254K 78643K 55 0 exec 0 0K 1K 78643K 215 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 128 55K 55K 78643K 1360 0 UVM aobj 23 4K 4K 78643K 23 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 8 0 NDP 14 0K 0K 78643K 26 0 temp 98 3855K 3925K 78643K 6082 0 kqueue 3 4K 8K 78643K 7 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 5 1 0 1 1 0 8 0 rtpcb 80 134 0 131 1 0 1 1 0 8 0 rtentry 112 63 0 26 2 0 2 2 0 8 0 unpcb 120 91 0 83 1 0 1 1 0 8 0 syncache 264 6 0 6 2 2 0 1 0 8 0 tcpqe 32 253 0 253 1 1 0 1 0 8 0 tcpcb 544 180 0 174 1 0 1 1 0 8 0 inpcb 296 312 0 303 2 0 2 2 0 8 1 nd6 48 14 0 10 1 0 1 1 0 8 0 ppxss 1128 1 0 1 1 0 1 1 0 8 1 pfstscr 40 6 0 6 1 0 1 1 0 8 1 pfrktable 1344 71 0 63 2 0 2 2 0 8 1 pftag 88 10 0 8 1 0 1 1 0 8 0 pfstkey 112 8 0 8 1 0 1 1 0 8 1 pfstate 328 4 0 4 1 0 1 1 0 8 1 pfrule 1360 14 0 8 1 0 1 1 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 250 0 82 13 0 13 13 0 8 1 art_table 32 251 0 82 2 0 2 2 0 8 0 art_node 16 62 0 28 1 0 1 1 0 8 0 semupl 112 1 0 1 1 1 0 1 0 8 0 semapl 112 47 0 37 1 0 1 1 0 8 0 shmpl 112 20 0 0 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 1708 0 309 88 0 88 88 0 8 0 ffsino 240 1708 0 309 83 0 83 83 0 8 0 nchpl 144 2179 0 586 60 0 60 60 0 8 0 uvmvnodes 72 1940 0 0 36 0 36 36 0 8 0 vnodes 208 1940 0 0 103 0 103 103 0 8 0 namei 1024 5824 0 5824 1 0 1 1 0 8 1 vcpupl 1984 4 0 0 1 0 1 1 0 8 0 vmpool 528 8 0 4 1 0 1 1 0 8 0 pfiaddrpl 120 24 0 18 1 0 1 1 0 8 0 scsiplug 64 1 0 1 1 0 1 1 0 8 1 scxspl 192 6585 0 6585 1 0 1 1 0 8 1 plimitpl 152 33 0 26 1 0 1 1 0 8 0 sigapl 424 418 0 369 6 0 6 6 0 8 0 futexpl 56 4660 0 4660 1 0 1 1 0 8 1 knotepl 112 67 0 48 1 0 1 1 0 8 0 kqueuepl 144 24 0 21 1 0 1 1 0 8 0 pipepl 272 86 0 76 1 0 1 1 0 8 0 fdescpl 432 383 0 369 2 0 2 2 0 8 0 filepl 120 2376 0 2278 4 0 4 4 0 8 0 lockfpl 104 45 0 44 1 0 1 1 0 8 0 lockfspl 48 18 0 17 1 0 1 1 0 8 0 sessionpl 112 17 0 7 1 0 1 1 0 8 0 pgrppl 48 19 0 9 1 0 1 1 0 8 0 ucredpl 96 197 0 190 1 0 1 1 0 8 0 zombiepl 144 369 0 368 1 0 1 1 0 8 0 processpl 928 418 0 368 7 0 7 7 0 8 0 procpl 624 641 0 584 5 0 5 5 0 8 0 sosppl 128 4 0 4 1 0 1 1 0 8 1 sockpl 400 539 0 519 4 0 4 4 0 8 1 mcl64k 65536 20 0 20 1 0 1 1 0 8 1 mcl16k 16384 1 0 1 1 0 1 1 0 8 1 mcl12k 12288 6 0 6 1 0 1 1 0 8 1 mcl9k 9216 3 0 3 1 0 1 1 0 8 1 mcl8k 8192 7 0 7 1 0 1 1 0 8 1 mcl4k 4096 29 0 29 2 1 1 1 0 8 1 mcl2k2 2112 2 0 2 1 0 1 1 0 8 1 mcl2k 2048 78571 0 78519 20 12 8 18 0 8 1 mtagpl 96 102 0 100 3 1 2 2 0 8 1 mbufpl 256 126020 0 125932 17 1 16 16 0 8 7 bufpl 280 3764 0 128 260 0 260 260 0 8 0 anonpl 16 55465 0 38829 76 1 75 75 0 107 7 amapchunkpl 152 1973 0 1825 10 0 10 10 0 158 3 amappl16 192 1838 0 908 47 0 47 47 0 8 0 amappl15 184 1 0 0 1 0 1 1 0 8 0 amappl14 176 25 0 19 1 0 1 1 0 8 0 amappl13 168 107 0 102 1 0 1 1 0 8 0 amappl12 160 187 0 183 2 1 1 1 0 8 0 amappl11 152 55 0 44 1 0 1 1 0 8 0 amappl10 144 14 0 9 1 0 1 1 0 8 0 amappl9 136 361 0 359 1 0 1 1 0 8 0 amappl8 128 322 0 285 2 0 2 2 0 8 0 amappl7 120 105 0 93 1 0 1 1 0 8 0 amappl6 112 27 0 20 1 0 1 1 0 8 0 amappl5 104 364 0 354 1 0 1 1 0 8 0 amappl4 96 502 0 473 1 0 1 1 0 8 0 amappl3 88 198 0 191 1 0 1 1 0 8 0 amappl2 80 2245 0 2177 2 0 2 2 0 8 0 amappl1 72 16165 0 15758 23 14 9 17 0 8 0 amappl 80 878 0 835 1 0 1 1 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 22 0 0 1 0 1 1 0 8 0 uaddrrnd 24 391 0 373 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 391 0 373 1 0 1 1 0 8 0 vmmpekpl 168 6511 0 6478 2 0 2 2 0 8 0 vmmpepl 168 53577 0 51545 157 12 145 151 0 357 51 vmsppl 272 390 0 373 3 1 2 2 0 8 0 pdppl 4096 788 0 750 7 1 6 6 0 8 0 pvpl 32 171141 0 151537 179 0 179 179 0 265 19 pmappl 200 390 0 373 1 0 1 1 0 8 0 extentpl 40 53 0 36 1 0 1 1 0 8 0 phpool 112 255 0 18 7 0 7 7 0 8 0 ddb> machine ddbcpu 0 No such command ddb> trace ifa_update_broadaddr(ffff800000ac6000,ffff800000af1e00,ffff80001e8533b0) at ifa_update_broadaddr+0x1f sys/net/if.c:3070 in_ioctl(80206913,ffff80001e8533a0,ffff800000ac6000,1) at in_ioctl+0x5eb sys/netinet/in.c:320 ifioctl(fffffd806b530e20,80206913,ffff80001e8533a0,ffff80001d7793a0) at ifioctl+0xe60 sys/net/if.c:2282 sys_ioctl(ffff80001d7793a0,ffff80001e8534b8,ffff80001e853500) at sys_ioctl+0x4a1 syscall(ffff80001e853580) at syscall+0x507 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x548d19f5e50, count: -6 ddb> machine ddbcpu 1 No such command ddb> trace ifa_update_broadaddr(ffff800000ac6000,ffff800000af1e00,ffff80001e8533b0) at ifa_update_broadaddr+0x1f sys/net/if.c:3070 in_ioctl(80206913,ffff80001e8533a0,ffff800000ac6000,1) at in_ioctl+0x5eb sys/netinet/in.c:320 ifioctl(fffffd806b530e20,80206913,ffff80001e8533a0,ffff80001d7793a0) at ifioctl+0xe60 sys/net/if.c:2282 sys_ioctl(ffff80001d7793a0,ffff80001e8534b8,ffff80001e853500) at sys_ioctl+0x4a1 syscall(ffff80001e853580) at syscall+0x507 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x548d19f5e50, count: -6