uvm_fault(0xfffffd805819cef0, 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(0xfffffd805819cef0, 0x0, 0, 1) -> e ifa_update_broadaddr(ffff800000b27800,ffff800000b13100,ffff80001e7d1600) at ifa_update_broadaddr+0x1f sys/net/if.c:3070 end trace frame: 0xffff80001e7d1520, count: 0 ddb> trace ifa_update_broadaddr(ffff800000b27800,ffff800000b13100,ffff80001e7d1600) at ifa_update_broadaddr+0x1f sys/net/if.c:3070 in_ioctl(80206913,ffff80001e7d15f0,ffff800000b27800,1) at in_ioctl+0x5eb sys/netinet/in.c:320 ifioctl(fffffd80593ae4f8,80206913,ffff80001e7d15f0,ffff80001d780c58) at ifioctl+0xe60 sys/net/if.c:2282 sys_ioctl(ffff80001d780c58,ffff80001e7d1708,ffff80001e7d1750) at sys_ioctl+0x4a1 syscall(ffff80001e7d17d0) at syscall+0x507 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x37f3a072a00, count: -6 ddb> show registers rdi 0xffffffff813eaa2b ifa_update_broadaddr+0x1b rsi 0x50 rbp 0xffff80001e7d1480 rbx 0x10 rdx 0x51 rcx 0xffff80001f998000 rax 0xffff80001f998000 r8 0xffffffff81d264f7 in_ioctl+0x387 r9 0x7 r10 0x3 r11 0x360746ef54262757 r12 0xffff80001e7d1600 r13 0 r14 0xffff80001e7d1600 r15 0 rip 0xffffffff813eaa2f ifa_update_broadaddr+0x1f cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff80001e7d1440 ss 0x10 ifa_update_broadaddr+0x1f: movzbl 0(%r15),%r12d ddb> show proc PROC (syz-executor.1) pid=34340 stat=onproc flags process=0 proc=4000000 pri=80, usrpri=80, nice=20 forw=0xffffffffffffffff, list=0xffff80001d780028,0xffffffff8283e8c8 process=0xffff80001e79e3d0 user=0xffff80001e7cc000, vmspace=0xfffffd805819cef0 estcpu=36, cpticks=1, pctcpu=0.0 user=0, sys=1, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 28874 296339 56312 0 3 0x80 fsleep syz-executor.1 *28874 34340 56312 0 7 0x4000000 syz-executor.1 81991 383736 0 0 3 0x14280 nfsidl nfsio 77322 102885 0 0 3 0x14280 nfsidl nfsio 40925 483075 0 0 3 0x14280 nfsidl nfsio 22860 350793 0 0 3 0x14280 nfsidl nfsio 72267 463876 0 0 3 0x14280 nfsidl nfsio 16222 373507 0 0 3 0x14280 nfsidl nfsio 56226 315796 0 0 3 0x14280 nfsidl nfsio 13392 248678 0 0 3 0x14280 nfsidl nfsio 25977 513519 0 0 3 0x14280 nfsidl nfsio 87825 364178 0 0 3 0x14280 nfsidl nfsio 71763 229015 0 0 3 0x14280 nfsidl nfsio 98731 113668 0 0 3 0x14280 nfsidl nfsio 63943 466890 0 0 3 0x14280 nfsidl nfsio 33843 346487 0 0 3 0x14280 nfsidl nfsio 42285 481369 0 0 3 0x14280 nfsidl nfsio 94143 438213 0 0 3 0x14280 nfsidl nfsio 20383 138896 0 0 3 0x14280 nfsidl nfsio 7859 367985 0 0 3 0x14280 nfsidl nfsio 8122 454420 0 0 3 0x14280 nfsidl nfsio 60223 255971 0 0 3 0x14280 nfsidl nfsio 89261 323837 0 0 3 0x14200 acct acct 56312 482538 37296 0 3 0x82 nanosleep syz-executor.1 78155 459762 0 0 3 0x14200 bored sosplice 66161 384677 37296 0 3 0x82 piperd syz-executor.0 37296 484968 77189 0 2 0x2 syz-fuzzer 37296 12723 77189 0 3 0x4000082 nanosleep syz-fuzzer 37296 291405 77189 0 3 0x4000082 thrsleep syz-fuzzer 37296 121618 77189 0 3 0x4000082 thrsleep syz-fuzzer 37296 261742 77189 0 3 0x4000082 thrsleep syz-fuzzer 37296 253106 77189 0 3 0x4000082 thrsleep syz-fuzzer 37296 35729 77189 0 3 0x4000082 thrsleep syz-fuzzer 37296 111328 77189 0 3 0x4000082 thrsleep syz-fuzzer 37296 218078 77189 0 3 0x4000082 thrsleep syz-fuzzer 77189 272672 37352 0 3 0x10008a pause ksh 37352 343722 70716 0 3 0x92 select sshd 31452 360197 1 0 3 0x100083 ttyin getty 70716 139178 1 0 3 0x80 select sshd 64552 385128 15773 73 3 0x100090 kqread syslogd 15773 205766 1 0 3 0x100082 netio syslogd 60724 284278 1 77 3 0x100090 poll dhclient 62898 510431 1 0 3 0x80 poll dhclient 55529 437427 0 0 3 0x14200 bored smr 98182 85993 0 0 2 0x14200 zerothread 59178 349663 0 0 3 0x14200 aiodoned aiodoned 56201 183159 0 0 3 0x14200 syncer update 68746 414909 0 0 3 0x14200 cleaner cleaner 10042 397401 0 0 3 0x14200 reaper reaper 27265 187727 0 0 3 0x14200 pgdaemon pagedaemon 80518 466469 0 0 3 0x14200 bored crynlk 14951 6191 0 0 3 0x14200 bored crypto 79798 279205 0 0 3 0x40014200 acpi0 acpi0 68649 300505 0 0 3 0x14200 bored softnet 27838 455414 0 0 3 0x14200 bored systqmp 89976 522992 0 0 3 0x14200 bored systq 87622 145141 0 0 2 0x40014200 softclock 76727 404186 0 0 3 0x40014200 idle0 1 391102 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 9503 6381K 6784K 78643K 11898 0 pcb 13 8K 8K 78643K 153 0 rtable 156 21K 22K 78643K 1048 0 ifaddr 96 21K 22K 78643K 379 0 sysctl 2 0K 0K 78643K 2 0 counters 21 16K 17K 78643K 50 0 ioctlops 0 0K 4K 78643K 230 0 iov 0 0K 16K 78643K 138 0 mount 1 1K 1K 78643K 1 0 vnodes 1227 77K 77K 78643K 1676 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 5K 78643K 14 0 VM map 2 0K 0K 78643K 2 0 sem 12 0K 0K 78643K 217 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1809 195K 288K 78643K 12938 0 file desc 5 13K 25K 78643K 1265 0 sigio 0 0K 0K 78643K 27 0 proc 51 38K 55K 78643K 464 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 76 0 in_multi 98 4K 5K 78643K 236 0 ether_multi 1 0K 0K 78643K 29 0 mrt 1 0K 0K 78643K 9 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 61 281K 281K 78643K 61 0 exec 0 0K 1K 78643K 268 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 158 89K 89K 78643K 4010 0 UVM aobj 49 2K 2K 78643K 53 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 1K 78643K 144 0 NDP 11 0K 0K 78643K 56 0 temp 128 3864K 69405K 78643K 15440 0 kqueue 3 4K 12K 78643K 65 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 13 0 7 1 0 1 1 0 8 0 rtpcb 80 58 0 56 1 0 1 1 0 8 0 rtentry 112 92 0 45 2 0 2 2 0 8 0 unpcb 120 3694 0 3680 1 0 1 1 0 8 0 syncache 264 13 0 13 7 7 0 1 0 8 0 tcpqe 32 210 0 210 2 2 0 1 0 8 0 tcpcb 544 382 0 377 1 0 1 1 0 8 0 inpcb 296 1059 0 1049 11 10 1 2 0 8 0 rttmr 72 2 0 2 2 2 0 1 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 22 0 14 1 0 1 1 0 8 0 pkpcb 40 8 0 8 4 4 0 1 0 8 0 ppxss 1136 2 0 2 2 2 0 1 0 8 0 pfstscr 40 4 0 3 2 1 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 244 0 226 8 6 2 2 0 8 0 pftag 88 45 0 43 2 1 1 1 0 8 0 pfstitem 24 2 0 0 1 0 1 1 0 8 0 pfstkey 112 7 0 5 2 1 1 1 0 8 0 pfstate 328 4 0 3 2 1 1 1 0 8 0 pfrule 1360 63 0 38 3 0 3 3 0 8 0 art_heap8 4096 2 0 0 2 0 2 2 0 8 0 art_heap4 256 344 0 120 15 0 15 15 0 8 0 art_table 32 346 0 120 2 0 2 2 0 8 0 art_node 16 89 0 46 1 0 1 1 0 8 0 sysvmsgpl 40 29 0 14 1 0 1 1 0 8 0 semupl 112 3 0 3 1 1 0 1 0 8 0 semapl 112 212 0 202 1 0 1 1 0 8 0 shmpl 112 50 0 4 2 0 2 2 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 3533 0 2133 88 0 88 88 0 8 0 ffsino 240 3533 0 2133 83 0 83 83 0 8 0 nchpl 144 5783 0 4200 60 0 60 60 0 8 0 uvmvnodes 72 3866 0 0 71 0 71 71 0 8 0 vnodes 208 3866 0 0 204 0 204 204 0 8 0 namei 1024 15543 0 15543 4 3 1 1 0 8 1 vcpupl 1984 6 0 0 1 0 1 1 0 8 0 vmpool 528 8 0 2 1 0 1 1 0 8 0 pfiaddrpl 120 84 0 70 1 0 1 1 0 8 0 scxspl 192 15745 0 15745 1 0 1 1 0 8 1 plimitpl 152 108 0 101 1 0 1 1 0 8 0 sigapl 424 1471 0 1421 6 0 6 6 0 8 0 futexpl 56 25189 0 25188 3 2 1 1 0 8 0 knotepl 112 147 0 128 1 0 1 1 0 8 0 kqueuepl 144 131 0 129 1 0 1 1 0 8 0 pipepl 272 213 0 203 4 3 1 2 0 8 0 fdescpl 432 1434 0 1420 2 0 2 2 0 8 0 filepl 120 10890 0 10794 4 0 4 4 0 8 0 lockfpl 104 154 0 153 1 0 1 1 0 8 0 lockfspl 48 55 0 54 1 0 1 1 0 8 0 sessionpl 112 18 0 8 1 0 1 1 0 8 0 pgrppl 48 40 0 30 1 0 1 1 0 8 0 ucredpl 96 881 0 874 1 0 1 1 0 8 0 zombiepl 144 1421 0 1421 2 1 1 1 0 8 1 processpl 928 1471 0 1421 7 0 7 7 0 8 0 procpl 624 3209 0 3150 6 1 5 5 0 8 0 sosppl 128 17 0 17 5 5 0 1 0 8 0 sockpl 400 4823 0 4797 10 6 4 4 0 8 0 mcl64k 65536 60 0 60 10 9 1 1 0 8 1 mcl16k 16384 10 0 10 5 5 0 1 0 8 0 mcl12k 12288 25 0 25 8 8 0 1 0 8 0 mcl9k 9216 13 0 13 7 6 1 1 0 8 1 mcl8k 8192 51 0 51 10 9 1 1 0 8 1 mcl4k 4096 135 0 135 8 7 1 1 0 8 1 mcl2k2 2112 6 0 6 5 4 1 1 0 8 1 mcl2k 2048 93222 0 93164 22 14 8 17 0 8 0 mtagpl 96 109 0 22 4 1 3 3 0 8 0 mbufpl 256 158611 0 158274 32 10 22 22 0 8 0 bufpl 280 5275 0 129 368 0 368 368 0 8 0 anonpl 16 150607 0 132875 125 37 88 88 0 107 11 amapchunkpl 152 6965 0 6821 42 32 10 20 0 158 3 amappl16 192 7198 0 6165 92 32 60 64 0 8 8 amappl15 184 638 0 635 1 0 1 1 0 8 0 amappl14 176 25 0 19 1 0 1 1 0 8 0 amappl13 168 33 0 30 1 0 1 1 0 8 0 amappl12 160 29 0 25 1 0 1 1 0 8 0 amappl11 152 629 0 619 1 0 1 1 0 8 0 amappl10 144 14 0 9 1 0 1 1 0 8 0 amappl9 136 362 0 360 1 0 1 1 0 8 0 amappl8 128 390 0 338 2 0 2 2 0 8 0 amappl7 120 111 0 100 1 0 1 1 0 8 0 amappl6 112 583 0 576 1 0 1 1 0 8 0 amappl5 104 1383 0 1371 1 0 1 1 0 8 0 amappl4 96 452 0 423 1 0 1 1 0 8 0 amappl3 88 143 0 136 1 0 1 1 0 8 0 amappl2 80 11094 0 11027 2 0 2 2 0 8 0 amappl1 72 44012 0 43594 24 15 9 17 0 8 0 amappl 80 3444 0 3395 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 52 0 4 1 0 1 1 0 8 0 uaddrrnd 24 1442 0 1422 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 1442 0 1422 1 0 1 1 0 8 0 vmmpekpl 168 12575 0 12543 2 0 2 2 0 8 0 vmmpepl 168 182946 0 180774 181 79 102 131 0 357 7 vmsppl 272 1441 0 1422 3 1 2 2 0 8 0 pdppl 4096 2890 0 2850 11 5 6 6 0 8 0 pvpl 32 402703 0 381847 293 88 205 205 0 265 28 pmappl 200 1441 0 1422 2 0 2 2 0 8 1 extentpl 40 53 0 36 1 0 1 1 0 8 0 phpool 112 322 0 75 8 0 8 8 0 8 0 ddb> machine ddbcpu 0 No such command ddb> trace ifa_update_broadaddr(ffff800000b27800,ffff800000b13100,ffff80001e7d1600) at ifa_update_broadaddr+0x1f sys/net/if.c:3070 in_ioctl(80206913,ffff80001e7d15f0,ffff800000b27800,1) at in_ioctl+0x5eb sys/netinet/in.c:320 ifioctl(fffffd80593ae4f8,80206913,ffff80001e7d15f0,ffff80001d780c58) at ifioctl+0xe60 sys/net/if.c:2282 sys_ioctl(ffff80001d780c58,ffff80001e7d1708,ffff80001e7d1750) at sys_ioctl+0x4a1 syscall(ffff80001e7d17d0) at syscall+0x507 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x37f3a072a00, count: -6 ddb> machine ddbcpu 1 No such command ddb> trace ifa_update_broadaddr(ffff800000b27800,ffff800000b13100,ffff80001e7d1600) at ifa_update_broadaddr+0x1f sys/net/if.c:3070 in_ioctl(80206913,ffff80001e7d15f0,ffff800000b27800,1) at in_ioctl+0x5eb sys/netinet/in.c:320 ifioctl(fffffd80593ae4f8,80206913,ffff80001e7d15f0,ffff80001d780c58) at ifioctl+0xe60 sys/net/if.c:2282 sys_ioctl(ffff80001d780c58,ffff80001e7d1708,ffff80001e7d1750) at sys_ioctl+0x4a1 syscall(ffff80001e7d17d0) at syscall+0x507 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x37f3a072a00, count: -6