uvm_fault(0xfffffd806bc09110, 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(0xfffffd806bc09110, 0x0, 0, 1) -> e ifa_update_broadaddr(ffff800000af7000,ffff800000ad8c00,ffff80001e841200) at ifa_update_broadaddr+0x1f sys/net/if.c:2968 end trace frame: 0xffff80001e841120, count: 0 ddb> trace ifa_update_broadaddr(ffff800000af7000,ffff800000ad8c00,ffff80001e841200) at ifa_update_broadaddr+0x1f sys/net/if.c:2968 in_ioctl(80206913,ffff80001e8411f0,ffff800000af7000,1) at in_ioctl+0x5eb sys/netinet/in.c:320 ifioctl(fffffd805da777d8,80206913,ffff80001e8411f0,ffff80001e822020) at ifioctl+0xe60 sys/net/if.c:2180 sys_ioctl(ffff80001e822020,ffff80001e841308,ffff80001e841350) at sys_ioctl+0x4a1 syscall(ffff80001e8413d0) at syscall+0x507 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x1699d70670, count: -6 ddb> show registers rdi 0xffffffff812047cb ifa_update_broadaddr+0x1b rsi 0x51 rbp 0xffff80001e841080 rbx 0x10 rdx 0x52 rcx 0xffff80001f9b0000 rax 0xffff80001f9b0000 r8 0xffffffff82242c77 in_ioctl+0x387 r9 0x7 r10 0x3 r11 0x64eca52b9908dc81 r12 0xffff80001e841200 r13 0 r14 0xffff80001e841200 r15 0 rip 0xffffffff812047cf ifa_update_broadaddr+0x1f cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff80001e841040 ss 0x10 ifa_update_broadaddr+0x1f: movzbl 0(%r15),%r12d ddb> show proc PROC (syz-executor.1) pid=220052 stat=onproc flags process=0 proc=4000000 pri=32, usrpri=79, nice=20 forw=0xffffffffffffffff, list=0xffff80001e822770,0xffffffff82829c20 process=0xffff80001e7b0b10 user=0xffff80001e83c000, vmspace=0xfffffd806bc09110 estcpu=29, cpticks=0, pctcpu=0.0 user=0, sys=0, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 47822 207156 48322 0 2 0 syz-executor.1 *47822 220052 48322 0 7 0x4000000 syz-executor.1 48322 202935 87911 0 3 0x82 nanosleep syz-executor.1 20943 358991 0 0 3 0x14200 acct acct 68379 377669 0 0 3 0x14200 bored sosplice 88910 376659 0 0 3 0x14280 nfsidl nfsio 21239 517436 0 0 3 0x14280 nfsidl nfsio 21819 220734 0 0 3 0x14280 nfsidl nfsio 39238 4853 0 0 3 0x14280 nfsidl nfsio 81014 101261 0 0 3 0x14280 nfsidl nfsio 20076 188582 0 0 3 0x14280 nfsidl nfsio 78206 93280 0 0 3 0x14280 nfsidl nfsio 3158 198408 0 0 3 0x14280 nfsidl nfsio 9728 286500 0 0 3 0x14280 nfsidl nfsio 71043 511517 0 0 3 0x14280 nfsidl nfsio 78056 66504 0 0 3 0x14280 nfsidl nfsio 94267 392577 0 0 3 0x14280 nfsidl nfsio 77004 177539 0 0 3 0x14280 nfsidl nfsio 97139 401944 0 0 3 0x14280 nfsidl nfsio 71759 464502 0 0 3 0x14280 nfsidl nfsio 73043 3685 0 0 3 0x14280 nfsidl nfsio 2270 63722 0 0 3 0x14280 nfsidl nfsio 16532 253379 0 0 3 0x14280 nfsidl nfsio 20773 233066 0 0 3 0x14280 nfsidl nfsio 19461 320082 0 0 3 0x14280 nfsidl nfsio 56660 296136 87911 0 2 0x2 syz-executor.0 87911 478975 3451 0 3 0x82 kqread syz-fuzzer 87911 182459 3451 0 3 0x4000082 nanosleep syz-fuzzer 87911 8830 3451 0 3 0x4000082 thrsleep syz-fuzzer 87911 199983 3451 0 3 0x4000082 thrsleep syz-fuzzer 87911 481279 3451 0 3 0x4000082 thrsleep syz-fuzzer 87911 410256 3451 0 3 0x4000082 thrsleep syz-fuzzer 87911 112573 3451 0 3 0x4000082 thrsleep syz-fuzzer 87911 136616 3451 0 3 0x4000082 thrsleep syz-fuzzer 3451 405301 13625 0 3 0x10008a pause ksh 13625 392857 37174 0 3 0x92 select sshd 52784 248586 1 0 3 0x100083 ttyin getty 37174 315592 1 0 3 0x80 select sshd 26978 84676 32195 73 3 0x100090 kqread syslogd 32195 82897 1 0 3 0x100082 netio syslogd 78856 482475 1 77 3 0x100090 poll dhclient 41862 13555 1 0 3 0x80 poll dhclient 33139 505684 0 0 3 0x14200 bored smr 74389 38818 0 0 2 0x14200 zerothread 1685 509905 0 0 3 0x14200 aiodoned aiodoned 2666 30135 0 0 3 0x14200 syncer update 23419 450095 0 0 3 0x14200 cleaner cleaner 40407 30056 0 0 3 0x14200 reaper reaper 33163 105477 0 0 3 0x14200 pgdaemon pagedaemon 20201 105776 0 0 3 0x14200 bored crynlk 77349 338560 0 0 3 0x14200 bored crypto 18147 18455 0 0 3 0x40014200 acpi0 acpi0 90168 278901 0 0 3 0x14200 bored softnet 87729 231421 0 0 3 0x14200 bored systqmp 16254 519857 0 0 3 0x14200 bored systq 37934 477578 0 0 3 0x40014200 bored softclock 94666 465720 0 0 3 0x40014200 idle0 1 481721 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 9516 6549K 7835K 78643K 14322 0 pcb 13 8K 8K 78643K 206 0 rtable 85 3K 5K 78643K 705 0 ifaddr 88 18K 18K 78643K 275 0 sysctl 2 0K 0K 78643K 2 0 counters 21 16K 16K 78643K 43 0 ioctlops 0 0K 4K 78643K 241 0 iov 0 0K 16K 78643K 116 0 mount 1 1K 1K 78643K 1 0 vnodes 1227 77K 77K 78643K 2665 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 9K 78643K 21 0 VM map 2 0K 0K 78643K 2 0 sem 12 0K 0K 78643K 351 0 dirhash 9 1K 2K 78643K 12 0 ACPI 1809 195K 288K 78643K 12938 0 file desc 5 13K 25K 78643K 1616 0 sigio 0 0K 0K 78643K 26 0 proc 50 38K 63K 78643K 535 0 subproc 32 2K 2K 78643K 68 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 0 0K 0K 78643K 105 0 in_multi 87 4K 4K 78643K 268 0 ether_multi 1 0K 0K 78643K 27 0 mrt 0 0K 0K 78643K 17 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 323 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 151 40K 56K 78643K 4439 0 UVM aobj 72 3K 3K 78643K 74 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 132 0 NDP 13 0K 0K 78643K 57 0 temp 139 3872K 3936K 78643K 14982 0 kqueue 3 4K 11K 78643K 59 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 20 0 11 1 0 1 1 0 8 0 rtpcb 80 77 0 75 1 0 1 1 0 8 0 rtentry 112 153 0 124 2 0 2 2 0 8 0 unpcb 120 929 0 921 1 0 1 1 0 8 0 syncache 264 8 0 8 3 3 0 1 0 8 0 tcpqe 32 768 0 768 2 2 0 1 0 8 0 tcpcb 544 445 0 440 1 0 1 1 0 8 0 ipq 40 5 0 5 3 3 0 1 0 8 0 ipqe 40 57 0 57 3 3 0 1 0 8 0 inpcb 296 2672 0 2664 3 1 2 2 0 8 1 rttmr 72 5 0 5 4 4 0 1 0 8 0 nd6 48 32 0 30 1 0 1 1 0 8 0 pkpcb 40 8 0 8 3 2 1 1 0 8 1 ppxss 1136 4 0 4 2 1 1 1 0 8 1 pfrktable 1344 7 0 7 1 1 0 1 0 8 0 pfrule 1360 5 0 3 1 0 1 1 0 8 0 art_heap8 4096 4 0 2 4 2 2 3 0 8 0 art_heap4 256 631 0 485 19 7 12 13 0 8 0 art_table 32 635 0 487 2 0 2 2 0 8 0 art_node 16 138 0 115 1 0 1 1 0 8 0 sysvmsgpl 40 38 0 15 1 0 1 1 0 8 0 semapl 112 349 0 339 1 0 1 1 0 8 0 shmpl 112 71 0 2 3 0 3 3 0 8 1 dirhash 1024 17 0 10 3 1 2 3 0 8 0 dino2pl 256 3355 0 1957 88 0 88 88 0 8 0 ffsino 240 3355 0 1957 83 0 83 83 0 8 0 nchpl 144 5758 0 4168 60 0 60 60 0 8 0 uvmvnodes 72 4703 0 0 86 0 86 86 0 8 0 vnodes 208 4703 0 0 248 0 248 248 0 8 0 namei 1024 16409 0 16409 2 1 1 1 0 8 1 vcpupl 1984 2 0 0 1 0 1 1 0 8 0 vmpool 528 2 0 0 1 0 1 1 0 8 0 pfiaddrpl 120 2 0 2 1 1 0 1 0 8 0 scsiplug 64 2 0 2 1 1 0 1 0 8 0 scxspl 192 16948 0 16948 2 1 1 1 0 8 1 plimitpl 152 92 0 85 1 0 1 1 0 8 0 sigapl 424 1818 0 1768 6 0 6 6 0 8 0 futexpl 56 32380 0 32380 2 1 1 1 0 8 1 knotepl 112 155 0 136 1 0 1 1 0 8 0 kqueuepl 144 172 0 168 1 0 1 1 0 8 0 pipepl 272 237 0 227 1 0 1 1 0 8 0 fdescpl 432 1782 0 1768 2 0 2 2 0 8 0 filepl 120 10636 0 10538 4 0 4 4 0 8 1 lockfpl 104 240 0 239 1 0 1 1 0 8 0 lockfspl 48 86 0 85 1 0 1 1 0 8 0 sessionpl 112 19 0 9 1 0 1 1 0 8 0 pgrppl 48 29 0 19 1 0 1 1 0 8 0 ucredpl 96 949 0 941 1 0 1 1 0 8 0 zombiepl 144 1768 0 1768 1 0 1 1 0 8 1 processpl 928 1818 0 1768 7 0 7 7 0 8 0 procpl 624 3596 0 3538 5 0 5 5 0 8 0 sosppl 128 24 0 24 5 4 1 1 0 8 1 sockpl 400 3690 0 3672 6 2 4 4 0 8 2 mcl64k 65536 44 0 42 2 1 1 2 0 8 0 mcl16k 16384 19 0 19 8 7 1 1 0 8 1 mcl12k 12288 31 0 31 7 7 0 1 0 8 0 mcl9k 9216 14 0 14 6 6 0 1 0 8 0 mcl8k 8192 36 0 36 6 5 1 1 0 8 1 mcl4k 4096 143 0 143 5 4 1 1 0 8 1 mcl2k2 2112 7 0 7 3 3 0 1 0 8 0 mcl2k 2048 97175 0 97109 26 16 10 18 0 8 1 mtagpl 96 97 0 42 3 1 2 2 0 8 0 mbufpl 256 163183 0 162651 56 17 39 39 0 8 1 bufpl 280 6134 0 782 383 0 383 383 0 8 0 anonpl 16 179580 0 163637 104 20 84 86 0 107 4 amapchunkpl 152 7963 0 7824 30 18 12 20 0 158 4 amappl16 192 8215 0 7126 76 15 61 67 0 8 6 amappl15 184 425 0 424 1 0 1 1 0 8 0 amappl14 176 24 0 19 1 0 1 1 0 8 0 amappl13 168 42 0 38 1 0 1 1 0 8 0 amappl12 160 20 0 17 1 0 1 1 0 8 0 amappl11 152 296 0 285 1 0 1 1 0 8 0 amappl10 144 14 0 8 1 0 1 1 0 8 0 amappl9 136 1215 0 1213 1 0 1 1 0 8 0 amappl8 128 433 0 378 2 0 2 2 0 8 0 amappl7 120 120 0 107 1 0 1 1 0 8 0 amappl6 112 275 0 265 1 0 1 1 0 8 0 amappl5 104 1705 0 1694 1 0 1 1 0 8 0 amappl4 96 471 0 444 1 0 1 1 0 8 0 amappl3 88 145 0 140 1 0 1 1 0 8 0 amappl2 80 13342 0 13275 2 0 2 2 0 8 0 amappl1 72 48310 0 47898 24 15 9 17 0 8 0 amappl 80 3854 0 3809 3 1 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 73 0 2 2 0 2 2 0 8 0 uaddrrnd 24 1784 0 1768 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 1784 0 1768 1 0 1 1 0 8 0 vmmpekpl 168 13360 0 13324 2 0 2 2 0 8 0 vmmpepl 168 217938 0 215722 201 76 125 150 0 357 28 vmsppl 272 1783 0 1768 3 1 2 2 0 8 1 pdppl 4096 3574 0 3538 6 1 5 6 0 8 0 pvpl 32 478548 0 459459 246 46 200 202 0 265 15 pmappl 200 1783 0 1768 1 0 1 1 0 8 0 extentpl 40 53 0 36 1 0 1 1 0 8 0 phpool 112 327 0 67 8 0 8 8 0 8 0 ddb> machine ddbcpu 0 No such command ddb> trace ifa_update_broadaddr(ffff800000af7000,ffff800000ad8c00,ffff80001e841200) at ifa_update_broadaddr+0x1f sys/net/if.c:2968 in_ioctl(80206913,ffff80001e8411f0,ffff800000af7000,1) at in_ioctl+0x5eb sys/netinet/in.c:320 ifioctl(fffffd805da777d8,80206913,ffff80001e8411f0,ffff80001e822020) at ifioctl+0xe60 sys/net/if.c:2180 sys_ioctl(ffff80001e822020,ffff80001e841308,ffff80001e841350) at sys_ioctl+0x4a1 syscall(ffff80001e8413d0) at syscall+0x507 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x1699d70670, count: -6 ddb> machine ddbcpu 1 No such command ddb> trace ifa_update_broadaddr(ffff800000af7000,ffff800000ad8c00,ffff80001e841200) at ifa_update_broadaddr+0x1f sys/net/if.c:2968 in_ioctl(80206913,ffff80001e8411f0,ffff800000af7000,1) at in_ioctl+0x5eb sys/netinet/in.c:320 ifioctl(fffffd805da777d8,80206913,ffff80001e8411f0,ffff80001e822020) at ifioctl+0xe60 sys/net/if.c:2180 sys_ioctl(ffff80001e822020,ffff80001e841308,ffff80001e841350) at sys_ioctl+0x4a1 syscall(ffff80001e8413d0) at syscall+0x507 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x1699d70670, count: -6