uvm_fault(0xfffffd805f3c1780, 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(0xfffffd805f3c1780, 0x0, 0, 1) -> e ifa_update_broadaddr(ffff800000ac6000,ffff800000ad8400,ffff80001e81f390) at ifa_update_broadaddr+0x1f sys/net/if.c:3070 end trace frame: 0xffff80001e81f2b0, count: 0 ddb> trace ifa_update_broadaddr(ffff800000ac6000,ffff800000ad8400,ffff80001e81f390) at ifa_update_broadaddr+0x1f sys/net/if.c:3070 in_ioctl(80206913,ffff80001e81f380,ffff800000ac6000,1) at in_ioctl+0x5eb sys/netinet/in.c:320 ifioctl(fffffd805a7f7658,80206913,ffff80001e81f380,ffff80001f994c50) at ifioctl+0xe60 sys/net/if.c:2282 sys_ioctl(ffff80001f994c50,ffff80001e81f498,ffff80001e81f4e0) at sys_ioctl+0x4a1 syscall(ffff80001e81f560) at syscall+0x507 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xb9e37776ab0, count: -6 ddb> show registers rdi 0xffffffff813eaa2b ifa_update_broadaddr+0x1b rsi 0x53 rbp 0xffff80001e81f210 rbx 0x10 rdx 0x54 rcx 0xffff80001d77e000 rax 0xffff80001d77e000 r8 0xffffffff81d264f7 in_ioctl+0x387 r9 0x7 r10 0x3 r11 0x486ecab5c58b9e0a r12 0xffff80001e81f390 r13 0 r14 0xffff80001e81f390 r15 0 rip 0xffffffff813eaa2f ifa_update_broadaddr+0x1f cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff80001e81f1d0 ss 0x10 ifa_update_broadaddr+0x1f: movzbl 0(%r15),%r12d ddb> show proc PROC (syz-executor.0) pid=467492 stat=onproc flags process=0 proc=4000000 pri=32, usrpri=79, nice=20 forw=0xffffffffffffffff, list=0xffff80001f994500,0xffffffff8283e8c8 process=0xffff80001d6ef250 user=0xffff80001e81a000, vmspace=0xfffffd805f3c1780 estcpu=36, cpticks=0, pctcpu=0.0 user=0, sys=0, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 71452 354288 16234 0 2 0 syz-executor.0 *71452 467492 16234 0 7 0x4000000 syz-executor.0 47347 344286 0 0 3 0x14200 acct acct 6930 497572 0 0 3 0x14280 nfsidl nfsio 62039 321496 0 0 3 0x14280 nfsidl nfsio 7985 222165 0 0 3 0x14280 nfsidl nfsio 19515 447161 0 0 3 0x14280 nfsidl nfsio 78382 135807 0 0 3 0x14280 nfsidl nfsio 60123 313964 0 0 3 0x14280 nfsidl nfsio 32059 371751 0 0 3 0x14280 nfsidl nfsio 3499 151155 0 0 3 0x14280 nfsidl nfsio 54513 457982 0 0 3 0x14280 nfsidl nfsio 53604 501165 0 0 3 0x14280 nfsidl nfsio 14041 127480 0 0 3 0x14280 nfsidl nfsio 98971 498113 0 0 3 0x14280 nfsidl nfsio 92164 408437 0 0 3 0x14280 nfsidl nfsio 69594 41302 0 0 3 0x14280 nfsidl nfsio 44844 170305 0 0 3 0x14280 nfsidl nfsio 35799 171287 0 0 3 0x14280 nfsidl nfsio 86865 426899 0 0 3 0x14280 nfsidl nfsio 10974 416990 0 0 3 0x14280 nfsidl nfsio 91920 369230 0 0 3 0x14280 nfsidl nfsio 39709 191005 0 0 3 0x14280 nfsidl nfsio 51410 274897 0 0 3 0x14200 bored sosplice 65463 312950 46905 0 3 0x82 nanosleep syz-executor.1 16234 135918 46905 0 3 0x82 nanosleep syz-executor.0 46905 249914 88299 0 3 0x82 thrsleep syz-fuzzer 46905 155169 88299 0 3 0x4000082 nanosleep syz-fuzzer 46905 175525 88299 0 3 0x4000082 kqread syz-fuzzer 46905 503594 88299 0 3 0x4000082 thrsleep syz-fuzzer 46905 378317 88299 0 3 0x4000082 thrsleep syz-fuzzer 46905 462329 88299 0 3 0x4000082 thrsleep syz-fuzzer 46905 68394 88299 0 3 0x4000082 thrsleep syz-fuzzer 46905 50748 88299 0 3 0x4000082 thrsleep syz-fuzzer 88299 379170 82144 0 3 0x10008a pause ksh 82144 227388 86134 0 3 0x92 select sshd 5342 470341 1 0 3 0x100083 ttyin getty 86134 284939 1 0 3 0x80 select sshd 31468 355919 23024 73 3 0x100090 kqread syslogd 23024 31986 1 0 3 0x100082 netio syslogd 90665 140148 1 77 3 0x100090 poll dhclient 54888 487576 1 0 3 0x80 poll dhclient 90528 505063 0 0 3 0x14200 bored smr 56241 170179 0 0 2 0x14200 zerothread 63025 339045 0 0 3 0x14200 aiodoned aiodoned 35851 250018 0 0 3 0x14200 syncer update 17056 481574 0 0 3 0x14200 cleaner cleaner 82939 257038 0 0 3 0x14200 reaper reaper 96674 483173 0 0 3 0x14200 pgdaemon pagedaemon 73831 120089 0 0 3 0x14200 bored crynlk 59287 73471 0 0 3 0x14200 bored crypto 96720 234264 0 0 3 0x40014200 acpi0 acpi0 66036 129115 0 0 3 0x14200 bored softnet 28442 147272 0 0 3 0x14200 bored systqmp 64932 18324 0 0 3 0x14200 bored systq 50018 184188 0 0 3 0x40014200 bored softclock 21741 303642 0 0 3 0x40014200 idle0 1 471124 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 6371K 6927K 78643K 12538 0 pcb 13 8K 8K 78643K 167 0 rtable 125 9K 13K 78643K 788 0 ifaddr 105 22K 22K 78643K 315 0 sysctl 2 0K 0K 78643K 2 0 counters 21 16K 16K 78643K 45 0 ioctlops 0 0K 4K 78643K 189 0 iov 0 0K 16K 78643K 111 0 mount 1 1K 1K 78643K 1 0 vnodes 1227 77K 77K 78643K 1810 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 9K 78643K 18 0 VM map 2 0K 0K 78643K 2 0 sem 12 1K 1K 78643K 55 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1809 195K 288K 78643K 12938 0 file desc 5 13K 25K 78643K 1212 0 proc 50 38K 63K 78643K 435 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 542 0 in_multi 102 4K 4K 78643K 308 0 ether_multi 1 0K 0K 78643K 31 0 mrt 0 0K 0K 78643K 3 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 283 0 pfkey data 0 0K 1K 78643K 3 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 72K 76K 78643K 4150 0 UVM aobj 46 2K 2K 78643K 46 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 1K 78643K 150 0 NDP 13 0K 0K 78643K 41 0 temp 124 3868K 3932K 78643K 15586 0 kqueue 5 8K 26K 78643K 493 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 2 1 0 1 1 0 8 0 rtpcb 80 85 0 83 1 0 1 1 0 8 0 rtentry 112 62 0 24 2 0 2 2 0 8 0 unpcb 120 466 0 458 1 0 1 1 0 8 0 syncache 264 10 0 10 3 2 1 1 0 8 1 tcpqe 32 468 0 468 1 1 0 1 0 8 0 tcpcb 544 755 0 750 1 0 1 1 0 8 0 ipq 40 2 0 2 1 1 0 1 0 8 0 ipqe 40 4 0 4 1 1 0 1 0 8 0 inpcb 296 2213 0 2199 7 5 2 2 0 8 0 ip6q 72 1 0 1 1 1 0 1 0 8 0 ip6af 40 2 0 2 1 1 0 1 0 8 0 nd6 48 7 0 0 1 0 1 1 0 8 0 pkpcb 40 4 0 4 2 2 0 1 0 8 0 ppxss 1136 6 0 6 5 4 1 1 0 8 1 pfstscr 40 4 0 3 1 0 1 1 0 8 0 pfosfp 40 1 0 0 1 0 1 1 0 8 0 pfosfpen 112 2 0 0 1 0 1 1 0 8 0 pfrktable 1344 161 0 149 5 3 2 2 0 8 0 pftag 88 19 0 18 1 0 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 52 0 28 3 1 2 2 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 257 0 69 14 2 12 12 0 8 0 art_table 32 258 0 69 2 0 2 2 0 8 0 art_node 16 58 0 26 1 0 1 1 0 8 0 sysvmsgpl 40 7 0 2 1 0 1 1 0 8 0 semupl 112 3 0 3 1 1 0 1 0 8 0 semapl 112 51 0 41 1 0 1 1 0 8 0 shmpl 112 43 0 0 2 0 2 2 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 2963 0 1566 88 0 88 88 0 8 0 ffsino 240 2963 0 1566 83 0 83 83 0 8 0 nchpl 144 4867 0 3274 60 0 60 60 0 8 0 uvmvnodes 72 3454 0 0 63 0 63 63 0 8 0 vnodes 208 3454 0 0 182 0 182 182 0 8 0 namei 1024 13222 0 13222 2 1 1 1 0 8 1 vcpupl 1984 8 0 0 1 0 1 1 0 8 0 vmpool 528 15 0 7 1 0 1 1 0 8 0 pfiaddrpl 120 82 0 60 1 0 1 1 0 8 0 scsiplug 64 2 0 2 1 1 0 1 0 8 0 scxspl 192 14724 0 14724 2 1 1 1 0 8 1 plimitpl 152 94 0 87 1 0 1 1 0 8 0 sigapl 424 1420 0 1370 6 0 6 6 0 8 0 futexpl 56 25813 0 25813 2 1 1 1 0 8 1 knotepl 112 768 0 749 2 1 1 2 0 8 0 kqueuepl 144 850 0 841 1 0 1 1 0 8 0 pipepl 272 228 0 218 1 0 1 1 0 8 0 fdescpl 432 1384 0 1370 2 0 2 2 0 8 0 filepl 120 8500 0 8404 4 0 4 4 0 8 1 lockfpl 104 186 0 185 1 0 1 1 0 8 0 lockfspl 48 69 0 68 1 0 1 1 0 8 0 sessionpl 112 17 0 7 1 0 1 1 0 8 0 pgrppl 48 39 0 29 1 0 1 1 0 8 0 ucredpl 96 685 0 678 1 0 1 1 0 8 0 zombiepl 144 1370 0 1369 1 0 1 1 0 8 0 processpl 928 1420 0 1369 7 0 7 7 0 8 0 procpl 624 3422 0 3363 12 6 6 6 0 8 1 sosppl 128 8 0 8 3 3 0 1 0 8 0 sockpl 400 2770 0 2748 6 3 3 4 0 8 0 mcl64k 65536 59 0 59 11 11 0 1 0 8 0 mcl16k 16384 8 0 8 7 7 0 1 0 8 0 mcl12k 12288 31 0 31 12 11 1 1 0 8 1 mcl9k 9216 10 0 10 8 8 0 1 0 8 0 mcl8k 8192 43 0 41 3 2 1 1 0 8 0 mcl4k 4096 143 0 143 6 5 1 1 0 8 1 mcl2k2 2112 10 0 10 7 6 1 1 0 8 1 mcl2k 2048 92575 0 92519 21 13 8 18 0 8 0 mtagpl 96 144 0 25 4 1 3 3 0 8 0 mbufpl 256 153749 0 153416 28 6 22 22 0 8 0 bufpl 280 5778 0 426 383 0 383 383 0 8 0 anonpl 16 247166 0 230441 120 45 75 86 0 107 3 amapchunkpl 152 6818 0 6676 29 22 7 20 0 158 0 amappl16 192 12875 0 11913 99 47 52 62 0 8 1 amappl15 184 9 0 7 1 0 1 1 0 8 0 amappl14 176 562 0 558 1 0 1 1 0 8 0 amappl13 168 31 0 27 1 0 1 1 0 8 0 amappl12 160 11 0 8 1 0 1 1 0 8 0 amappl11 152 587 0 577 1 0 1 1 0 8 0 amappl10 144 9 0 7 1 0 1 1 0 8 0 amappl9 136 1003 0 1000 1 0 1 1 0 8 0 amappl8 128 995 0 952 2 0 2 2 0 8 0 amappl7 120 107 0 94 1 0 1 1 0 8 0 amappl6 112 29 0 19 1 0 1 1 0 8 0 amappl5 104 801 0 790 1 0 1 1 0 8 0 amappl4 96 970 0 943 1 0 1 1 0 8 0 amappl3 88 672 0 666 1 0 1 1 0 8 0 amappl2 80 10274 0 10209 2 0 2 2 0 8 0 amappl1 72 43668 0 43254 23 13 10 17 0 8 0 amappl 80 3635 0 3591 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 45 0 0 1 0 1 1 0 8 0 uaddrrnd 24 1399 0 1377 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 1399 0 1377 1 0 1 1 0 8 0 vmmpekpl 168 13065 0 13031 2 0 2 2 0 8 0 vmmpepl 168 184704 0 182627 162 61 101 115 0 357 6 vmsppl 272 1398 0 1377 3 1 2 2 0 8 0 pdppl 4096 2804 0 2762 7 1 6 6 0 8 0 pvpl 32 648862 0 629033 279 83 196 210 0 265 22 pmappl 200 1398 0 1377 3 1 2 2 0 8 0 extentpl 40 53 0 36 1 0 1 1 0 8 0 phpool 112 302 0 61 7 0 7 7 0 8 0 ddb> machine ddbcpu 0 No such command ddb> trace ifa_update_broadaddr(ffff800000ac6000,ffff800000ad8400,ffff80001e81f390) at ifa_update_broadaddr+0x1f sys/net/if.c:3070 in_ioctl(80206913,ffff80001e81f380,ffff800000ac6000,1) at in_ioctl+0x5eb sys/netinet/in.c:320 ifioctl(fffffd805a7f7658,80206913,ffff80001e81f380,ffff80001f994c50) at ifioctl+0xe60 sys/net/if.c:2282 sys_ioctl(ffff80001f994c50,ffff80001e81f498,ffff80001e81f4e0) at sys_ioctl+0x4a1 syscall(ffff80001e81f560) at syscall+0x507 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xb9e37776ab0, count: -6 ddb> machine ddbcpu 1 No such command ddb> trace ifa_update_broadaddr(ffff800000ac6000,ffff800000ad8400,ffff80001e81f390) at ifa_update_broadaddr+0x1f sys/net/if.c:3070 in_ioctl(80206913,ffff80001e81f380,ffff800000ac6000,1) at in_ioctl+0x5eb sys/netinet/in.c:320 ifioctl(fffffd805a7f7658,80206913,ffff80001e81f380,ffff80001f994c50) at ifioctl+0xe60 sys/net/if.c:2282 sys_ioctl(ffff80001f994c50,ffff80001e81f498,ffff80001e81f4e0) at sys_ioctl+0x4a1 syscall(ffff80001e81f560) at syscall+0x507 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xb9e37776ab0, count: -6