oLoLpanic: ifa_update_broadaddr does not support dynamic length Stopped at db_enter+0x18: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND 218957 41968 0 0 0 0 syz-executor.1 *245265 41968 0 0 0x4000000 1K syz-executor.1 db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:398 panic() at panic+0x15c sys/kern/subr_prf.c:207 ifa_update_broadaddr(ffff800000ac1800,ffff800000ae6f00,ffff800023b68f40) at ifa_update_broadaddr+0x61 sys/net/if.c:2970 in_ioctl(80206913,ffff800023b68f30,ffff800000ac1800,1) at in_ioctl+0x463 sys/netinet/in.c:311 ifioctl(fffffd806395b600,80206913,ffff800023b68f30,ffff800020acec78) at ifioctl+0xb64 sys/net/if.c:2202 sys_ioctl(ffff800020acec78,ffff800023b69048,ffff800023b69090) at sys_ioctl+0x5b9 syscall(ffff800023b69110) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:92 [inline] syscall(ffff800023b69110) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:555 Xsyscall(6,0,ffffffffffffff36,0,3,291f5e7c010) at Xsyscall+0x128 end of kernel end trace frame: 0x294e4a9b6f0, count: 7 https://www.openbsd.org/ddb.html describes the minimum info required in bug reports. Insufficient info makes it difficult to find and fix bugs. ddb{1}> ddb{1}> set $lines = 0 ddb{1}> set $maxwidth = 0 ddb{1}> show panic ifa_update_broadaddr does not support dynamic length ddb{1}> trace db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:398 panic() at panic+0x15c sys/kern/subr_prf.c:207 ifa_update_broadaddr(ffff800000ac1800,ffff800000ae6f00,ffff800023b68f40) at ifa_update_broadaddr+0x61 sys/net/if.c:2970 in_ioctl(80206913,ffff800023b68f30,ffff800000ac1800,1) at in_ioctl+0x463 sys/netinet/in.c:311 ifioctl(fffffd806395b600,80206913,ffff800023b68f30,ffff800020acec78) at ifioctl+0xb64 sys/net/if.c:2202 sys_ioctl(ffff800020acec78,ffff800023b69048,ffff800023b69090) at sys_ioctl+0x5b9 syscall(ffff800023b69110) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:92 [inline] syscall(ffff800023b69110) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:555 Xsyscall(6,0,ffffffffffffff36,0,3,291f5e7c010) at Xsyscall+0x128 end of kernel end trace frame: 0x294e4a9b6f0, count: -8 ddb{1}> show registers rdi 0xffffffff82125777 db_enter+0x17 rsi 0x1605 __ALIGN_SIZE+0x605 rbp 0xffff800023b68cd0 rbx 0xffff800023b68d80 rdx 0x1606 __ALIGN_SIZE+0x606 rcx 0xffff800021b60000 rax 0xffff800021b60000 r8 0xffffffff8165462f kprintf+0x16f r9 0x1 r10 0x25 r11 0xc07294cc1dc46734 r12 0x3000000008 r13 0xffff800023b68ce0 r14 0x100 r15 0x1 rip 0xffffffff82125778 db_enter+0x18 cs 0x8 rflags 0x246 rsp 0xffff800023b68cc0 ss 0x10 db_enter+0x18: addq $0x8,%rsp ddb{1}> show proc PROC (syz-executor.1) pid=245265 stat=onproc flags process=0 proc=4000000 pri=86, usrpri=86, nice=20 forw=0xffffffffffffffff, list=0xffff800020acf658,0xffffffff8267a4c0 process=0xffff800020a8ae10 user=0xffff800023b64000, vmspace=0xfffffd807f00b2e0 estcpu=36, cpticks=1, pctcpu=0.0 user=0, sys=1, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 41968 218957 29038 0 7 0 syz-executor.1 *41968 245265 29038 0 7 0x4000000 syz-executor.1 29038 494176 75547 0 3 0x82 nanosleep syz-executor.1 37378 286510 75547 0 3 0x82 nanosleep syz-executor.0 38584 31079 1 0 3 0x100083 ttyin getty 74849 377615 0 0 3 0x14200 acct acct 90382 113874 0 0 3 0x14200 bored sosplice 75547 144278 92232 0 3 0x82 thrsleep syz-fuzzer 75547 247523 92232 0 3 0x4000082 nanosleep syz-fuzzer 75547 254933 92232 0 3 0x4000082 thrsleep syz-fuzzer 75547 157701 92232 0 3 0x4000082 thrsleep syz-fuzzer 75547 113332 92232 0 3 0x4000082 kqread syz-fuzzer 75547 445746 92232 0 3 0x4000082 thrsleep syz-fuzzer 75547 449040 92232 0 3 0x4000082 thrsleep syz-fuzzer 75547 458853 92232 0 3 0x4000082 thrsleep syz-fuzzer 75547 272083 92232 0 3 0x4000082 thrsleep syz-fuzzer 75547 159725 92232 0 3 0x4000082 thrsleep syz-fuzzer 92232 331615 55485 0 3 0x10008a pause ksh 55485 12622 99026 0 3 0x92 select sshd 99026 449992 1 0 3 0x80 select sshd 5195 489729 66390 74 3 0x100092 bpf pflogd 66390 221748 1 0 3 0x80 netio pflogd 63062 296929 55728 73 3 0x100090 kqread syslogd 55728 312387 1 0 3 0x100082 netio syslogd 16861 244849 1 77 3 0x100090 poll dhclient 94210 283559 1 0 3 0x80 poll dhclient 84624 519851 0 0 2 0x14200 zerothread 8549 133600 0 0 3 0x14200 aiodoned aiodoned 66552 355703 0 0 3 0x14200 syncer update 65195 47061 0 0 3 0x14200 cleaner cleaner 51698 225103 0 0 3 0x14200 reaper reaper 26835 331100 0 0 3 0x14200 pgdaemon pagedaemon 39602 7697 0 0 3 0x14200 bored crynlk 87677 3544 0 0 3 0x14200 bored crypto 77277 501716 0 0 3 0x40014200 acpi0 acpi0 77159 146526 0 0 3 0x40014200 idle1 52674 230902 0 0 3 0x14200 bored softnet 23342 495518 0 0 3 0x14200 bored systqmp 61603 319033 0 0 3 0x14200 bored systq 90517 352393 0 0 3 0x40014200 bored softclock 53998 136665 0 0 3 0x40014200 idle0 25861 245751 0 0 3 0x14200 bored smr 1 21953 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{1}> show all locks Process 41968 (syz-executor.1) thread 0xffff800020acec78 (245265) exclusive rwlock netlock r = 0 (0xffffffff8248f918) #0 witness_lock+0x52e sys/kern/subr_witness.c:1163 #1 in_ioctl+0x142 #2 ifioctl+0xb64 sys/net/if.c:2202 #3 sys_ioctl+0x5b9 #4 syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:92 [inline] #4 syscall+0x4a4 sys/arch/amd64/amd64/trap.c:555 #5 Xsyscall+0x128 exclusive kernel_lock &kernel_lock r = 0 (0xffffffff82638a30) #0 witness_lock+0x52e sys/kern/subr_witness.c:1163 #1 syscall+0x400 mi_syscall sys/sys/syscall_mi.h:83 [inline] #1 syscall+0x400 sys/arch/amd64/amd64/trap.c:555 #2 Xsyscall+0x128 ddb{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim Kern Lim devbuf 9601 6446K 7418K 78643K 19573 0 0 pcb 13 10K 12K 78643K 3497 0 0 rtable 117 5K 5K 78643K 2248 0 0 ifaddr 94 21K 22K 78643K 657 0 0 counters 39 33K 33K 78643K 39 0 0 ioctlops 0 0K 4K 78643K 1596 0 0 iov 0 0K 24K 78643K 634 0 0 mount 1 1K 1K 78643K 1 0 0 vnodes 1218 77K 77K 78643K 4331 0 0 UFS quota 1 32K 32K 78643K 1 0 0 UFS mount 5 36K 36K 78643K 5 0 0 shm 2 1K 5K 78643K 39 0 0 VM map 22 11K 11K 78643K 31 0 0 sem 12 0K 1K 78643K 823 0 0 dirhash 12 2K 2K 78643K 12 0 0 ACPI 1808 196K 290K 78643K 12765 0 0 file desc 5 13K 25K 78643K 2918 0 0 sigio 0 0K 0K 78643K 39 0 0 proc 61 63K 83K 78643K 1627 0 0 subproc 32 2K 2K 78643K 374 0 0 NFS srvsock 1 0K 0K 78643K 1 0 0 NFS daemon 1 16K 16K 78643K 1 0 0 ip_moptions 0 0K 1K 78643K 363 0 0 in_multi 29 2K 2K 78643K 502 0 0 ether_multi 1 0K 0K 78643K 35 0 0 mrt 0 0K 0K 78643K 20 0 0 ISOFS mount 1 32K 32K 78643K 1 0 0 MSDOSFS mount 1 16K 16K 78643K 1 0 0 ttys 78 344K 344K 78643K 78 0 0 exec 0 0K 1K 78643K 778 0 0 pfkey data 0 0K 0K 78643K 4 0 0 pagedep 1 8K 8K 78643K 1 0 0 inodedep 1 32K 32K 78643K 1 0 0 newblk 1 0K 0K 78643K 1 0 0 VM swap 7 26K 26K 78643K 7 0 0 UVM amap 160 190K 194K 78643K 11342 0 0 UVM aobj 130 6K 6K 78643K 135 0 0 memdesc 1 4K 4K 78643K 1 0 0 crypto data 1 1K 1K 78643K 1 0 0 ip6_options 0 0K 1K 78643K 724 0 0 NDP 23 0K 0K 78643K 212 0 0 temp 243 3565K 4200K 78643K 69686 0 0 kqueue 0 0K 0K 78643K 19 0 0 SYN cache 2 16K 16K 78643K 2 0 0 ddb{1}> show all pools Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle arp 64 74 0 68 1 0 1 1 0 8 0 plcache 128 20 0 0 1 0 1 1 0 8 0 rtpcb 80 292 0 290 1 0 1 1 0 8 0 rtentry 112 423 0 378 2 0 2 2 0 8 0 unpcb 120 2028 0 2014 6 5 1 2 0 8 0 syncache 264 27 0 27 12 12 0 1 0 8 0 tcpqe 32 7 0 7 6 6 0 1 0 8 0 tcpcb 544 1841 0 1836 29 27 2 13 0 8 1 inpcb 280 7505 0 7497 25 23 2 9 0 8 1 rttmr 72 7 0 7 5 5 0 1 0 8 0 ip6q 72 6 0 6 3 3 0 1 0 8 0 ip6af 40 14 0 14 3 3 0 1 0 8 0 nd6 48 64 0 62 2 1 1 1 0 8 0 pkpcb 40 37 0 37 7 6 1 1 0 8 1 ppxss 1128 91 0 91 8 7 1 1 0 8 1 pffrag 232 89 0 89 10 9 1 1 0 482 1 pffrnode 88 89 0 89 10 9 1 1 0 8 1 pffrent 40 2974 0 2974 10 9 1 1 0 8 1 pfosfp 40 846 0 423 5 0 5 5 0 8 0 pfosfpen 112 1428 0 714 21 0 21 21 0 8 0 pfstitem 24 304 0 250 1 0 1 1 0 8 0 pfstkey 112 304 0 250 3 0 3 3 0 8 0 pfstate 328 304 0 250 9 0 9 9 0 8 0 pfrule 1360 21 0 16 2 1 1 2 0 8 0 art_heap8 4096 4 0 2 4 2 2 4 0 8 0 art_heap4 256 1930 0 1723 34 18 16 18 0 8 1 art_table 32 1934 0 1725 4 2 2 3 0 8 0 art_node 16 422 0 379 1 0 1 1 0 8 0 sysvmsgpl 40 64 0 50 1 0 1 1 0 8 0 semapl 112 819 0 809 1 0 1 1 0 8 0 shmpl 112 133 0 5 4 0 4 4 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino1pl 128 5775 0 4361 46 0 46 46 0 8 0 ffsino 272 5775 0 4361 95 0 95 95 0 8 0 nchpl 144 10794 0 9173 61 0 61 61 0 8 0 uvmvnodes 72 6094 0 0 111 0 111 111 0 8 0 vnodes 208 6094 0 0 321 0 321 321 0 8 0 namei 1024 38008 0 38008 1 0 1 1 0 8 1 percpumem 16 30 0 0 1 0 1 1 0 8 0 vcpupl 1984 21 0 1 3 0 3 3 0 8 0 vmpool 552 29 0 9 3 1 2 2 0 8 0 scsiplug 64 2 0 2 1 1 0 1 0 8 0 scxspl 192 33137 0 33137 30 27 3 7 0 8 3 plimitpl 152 274 0 266 1 0 1 1 0 8 0 sigapl 432 3058 0 3043 3 1 2 3 0 8 0 futexpl 56 75319 0 75319 1 0 1 1 0 8 1 knotepl 112 625 0 606 2 1 1 2 0 8 0 kqueuepl 104 997 0 995 7 6 1 4 0 8 0 pipepl 112 2006 0 1987 5 4 1 2 0 8 0 fdescpl 488 3059 0 3043 3 0 3 3 0 8 0 filepl 152 29491 0 29390 36 30 6 14 0 8 2 lockfpl 104 1193 0 1192 1 0 1 1 0 8 0 lockfspl 48 406 0 405 1 0 1 1 0 8 0 sessionpl 112 40 0 29 1 0 1 1 0 8 0 pgrppl 48 89 0 78 1 0 1 1 0 8 0 ucredpl 96 3200 0 3191 1 0 1 1 0 8 0 zombiepl 144 3044 0 3043 1 0 1 1 0 8 0 processpl 896 3077 0 3043 4 0 4 4 0 8 0 procpl 632 9517 0 9473 5 0 5 5 0 8 0 srpgc 64 27 0 27 9 8 1 1 0 8 1 sosppl 128 76 0 76 10 9 1 1 0 8 1 sockpl 384 9979 0 9955 44 39 5 14 0 8 1 mcl64k 65536 19 0 0 3 0 3 3 0 8 0 mcl16k 16384 25 0 0 4 1 3 3 0 8 0 mcl12k 12288 25 0 0 2 0 2 2 0 8 0 mcl9k 9216 16 0 0 2 0 2 2 0 8 0 mcl8k 8192 17 0 0 3 0 3 3 0 8 0 mcl4k 4096 17 0 0 3 0 3 3 0 8 0 mcl2k2 2112 6 0 0 1 0 1 1 0 8 0 mcl2k 2048 168 0 0 20 2 18 20 0 8 0 mtagpl 80 46 0 0 1 0 1 1 0 8 0 mbufpl 256 859 0 0 43 0 43 43 0 8 0 bufpl 256 17154 0 10096 442 0 442 442 0 8 0 anonpl 16 380076 0 360243 130 45 85 98 0 124 1 amapchunkpl 152 22761 0 22595 40 32 8 14 0 158 0 amappl16 192 16193 0 15066 128 67 61 69 0 8 3 amappl15 184 34 0 32 1 0 1 1 0 8 0 amappl14 176 403 0 398 1 0 1 1 0 8 0 amappl13 168 672 0 670 4 3 1 1 0 8 0 amappl12 160 474 0 473 2 1 1 1 0 8 0 amappl11 152 481 0 466 1 0 1 1 0 8 0 amappl10 144 551 0 543 1 0 1 1 0 8 0 amappl9 136 1098 0 1095 1 0 1 1 0 8 0 amappl8 128 660 0 614 2 0 2 2 0 8 0 amappl7 120 651 0 639 1 0 1 1 0 8 0 amappl6 112 444 0 436 1 0 1 1 0 8 0 amappl5 104 759 0 745 1 0 1 1 0 8 0 amappl4 96 3567 0 3530 2 1 1 2 0 8 0 amappl3 88 458 0 447 1 0 1 1 0 8 0 amappl2 80 22713 0 22631 3 1 2 3 0 8 0 amappl1 72 79190 0 78752 25 14 11 20 0 8 0 amappl 80 10136 0 10079 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 17 0 17 1 1 0 1 0 8 0 aobjpl 64 134 0 5 3 0 3 3 0 8 0 uaddrrnd 24 3088 0 3043 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 3088 0 3043 1 0 1 1 0 8 0 vmmpekpl 168 29006 0 28967 3 0 3 3 0 8 0 vmmpepl 168 398047 0 395688 270 122 148 148 0 357 37 vmsppl 368 3058 0 3043 2 0 2 2 0 8 0 pdppl 4096 6183 0 6124 9 1 8 8 0 8 0 pvpl 32 1005794 0 982956 306 102 204 228 0 265 12 pmappl 232 3087 0 3052 5 2 3 3 0 8 0 extentpl 40 41 0 26 1 0 1 1 0 8 0 phpool 112 699 0 54 19 0 19 19 0 8 0