panic: ifa_update_broadaddr does not support dynamic length Stopped at db_enter+0x18: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND *220024 90540 0 0 0 1K syz-executor.0 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(ffff800000a67000,ffff800000a91800,ffff800020b59780) at ifa_update_broadaddr+0x61 sys/net/if.c:2970 in_ioctl(80206913,ffff800020b59770,ffff800000a67000,1) at in_ioctl+0x463 sys/netinet/in.c:311 ifioctl(fffffd806e97d908,80206913,ffff800020b59770,ffff800020ab1650) at ifioctl+0xb64 sys/net/if.c:2202 sys_ioctl(ffff800020ab1650,ffff800020b59888,ffff800020b598d0) at sys_ioctl+0x5b9 syscall(ffff800020b59950) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:92 [inline] syscall(ffff800020b59950) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:555 Xsyscall(6,0,ffffffffffffff36,0,3,187e8ecd010) at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffebd00, 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(ffff800000a67000,ffff800000a91800,ffff800020b59780) at ifa_update_broadaddr+0x61 sys/net/if.c:2970 in_ioctl(80206913,ffff800020b59770,ffff800000a67000,1) at in_ioctl+0x463 sys/netinet/in.c:311 ifioctl(fffffd806e97d908,80206913,ffff800020b59770,ffff800020ab1650) at ifioctl+0xb64 sys/net/if.c:2202 sys_ioctl(ffff800020ab1650,ffff800020b59888,ffff800020b598d0) at sys_ioctl+0x5b9 syscall(ffff800020b59950) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:92 [inline] syscall(ffff800020b59950) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:555 Xsyscall(6,0,ffffffffffffff36,0,3,187e8ecd010) at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffebd00, count: -8 ddb{1}> show registers rdi 0 rsi 0x1 rbp 0xffff800020b59510 rbx 0xffff800020b595c0 rdx 0x8b rcx 0x2 rax 0x1 r8 0xffffffff81d00c7f kprintf+0x16f r9 0x1 r10 0x92787ebf833942e7 r11 0xeb4145902df661d0 r12 0x3000000008 r13 0xffff800020b59520 r14 0x100 r15 0x1 rip 0xffffffff8120bfe8 db_enter+0x18 cs 0x8 rflags 0x246 rsp 0xffff800020b59500 ss 0x10 db_enter+0x18: addq $0x8,%rsp ddb{1}> show proc PROC (syz-executor.0) pid=220024 stat=onproc flags process=0 proc=0 pri=50, usrpri=50, nice=20 forw=0xffffffffffffffff, list=0xffff800020a5eed8,0xffffffff8266a260 process=0xffff800020add880 user=0xffff800020b54000, vmspace=0xfffffd807f00aa10 estcpu=9, cpticks=1, pctcpu=0.0 user=0, sys=1, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND *90540 220024 62057 0 7 0 syz-executor.0 62057 358839 89726 0 3 0x82 nanosleep syz-executor.0 89726 306556 94447 0 3 0x82 thrsleep syz-execprog 89726 154370 94447 0 3 0x4000082 nanosleep syz-execprog 89726 501755 94447 0 3 0x4000082 thrsleep syz-execprog 89726 154245 94447 0 3 0x4000082 thrsleep syz-execprog 89726 432099 94447 0 3 0x4000082 thrsleep syz-execprog 89726 112087 94447 0 3 0x4000082 thrsleep syz-execprog 89726 384408 94447 0 3 0x4000082 thrsleep syz-execprog 89726 160264 94447 0 3 0x4000082 nanosleep syz-execprog 94447 353160 29839 0 3 0x10008a pause ksh 29839 224812 51566 0 3 0x92 select sshd 77441 471558 1 0 3 0x100083 ttyin getty 51566 158562 1 0 3 0x80 select sshd 37658 450740 5191 74 3 0x100092 bpf pflogd 5191 500416 1 0 3 0x80 netio pflogd 72457 97377 9180 73 3 0x100090 kqread syslogd 9180 495349 1 0 3 0x100082 netio syslogd 43651 309071 1 77 3 0x100090 poll dhclient 10433 361915 1 0 3 0x80 poll dhclient 86931 360432 0 0 3 0x14200 pgzero zerothread 8707 157251 0 0 3 0x14200 aiodoned aiodoned 46819 195242 0 0 3 0x14200 syncer update 35646 110026 0 0 3 0x14200 cleaner cleaner 99296 442009 0 0 3 0x14200 reaper reaper 95557 80071 0 0 3 0x14200 pgdaemon pagedaemon 62211 221600 0 0 3 0x14200 bored crynlk 29035 167119 0 0 3 0x14200 bored crypto 37671 172084 0 0 3 0x40014200 acpi0 acpi0 56699 415107 0 0 3 0x40014200 idle1 88315 174170 0 0 3 0x14200 bored softnet 2089 522630 0 0 3 0x14200 bored systqmp 20210 396642 0 0 3 0x14200 bored systq 8323 104246 0 0 3 0x40014200 bored softclock 88946 15791 0 0 7 0x40014200 idle0 76825 349698 0 0 3 0x14200 bored smr 1 218621 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{1}> show all locks Process 90540 (syz-executor.0) thread 0xffff800020ab1650 (220024) exclusive rwlock netlock r = 0 (0xffffffff824c0f78) #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 (0xffffffff82623a10) #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 9457 6385K 6385K 78643K 10544 0 0 pcb 13 8K 8K 78643K 13 0 0 rtable 83 2K 2K 78643K 163 0 0 ifaddr 32 9K 9K 78643K 33 0 0 counters 39 33K 33K 78643K 39 0 0 ioctlops 0 0K 4K 78643K 1468 0 0 mount 1 1K 1K 78643K 1 0 0 vnodes 1181 74K 74K 78643K 1186 0 0 UFS quota 1 32K 32K 78643K 1 0 0 UFS mount 5 36K 36K 78643K 5 0 0 shm 2 1K 1K 78643K 2 0 0 VM map 2 1K 1K 78643K 2 0 0 sem 2 0K 0K 78643K 2 0 0 dirhash 12 2K 2K 78643K 12 0 0 ACPI 1808 196K 290K 78643K 12765 0 0 file desc 3 8K 12K 78643K 18 0 0 proc 59 63K 83K 78643K 398 0 0 NFS srvsock 1 0K 0K 78643K 1 0 0 NFS daemon 1 16K 16K 78643K 1 0 0 in_multi 22 1K 1K 78643K 22 0 0 ether_multi 1 0K 0K 78643K 1 0 0 ISOFS mount 1 32K 32K 78643K 1 0 0 MSDOSFS mount 1 16K 16K 78643K 1 0 0 ttys 18 79K 79K 78643K 18 0 0 exec 0 0K 1K 78643K 197 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 72 11K 12K 78643K 947 0 0 UVM aobj 2 2K 2K 78643K 2 0 0 memdesc 1 4K 4K 78643K 1 0 0 crypto data 1 1K 1K 78643K 1 0 0 NDP 7 0K 0K 78643K 7 0 0 temp 48 3542K 3606K 78643K 3305 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 4 0 0 1 0 1 1 0 8 0 plcache 128 20 0 0 1 0 1 1 0 8 0 rtpcb 80 17 0 15 1 0 1 1 0 8 0 rtentry 112 34 0 1 1 0 1 1 0 8 0 unpcb 120 29 0 19 1 0 1 1 0 8 0 syncache 264 5 0 5 2 1 1 1 0 8 1 tcpcb 544 8 0 5 1 0 1 1 0 8 0 inpcb 280 34 0 27 1 0 1 1 0 8 0 nd6 48 2 0 0 1 0 1 1 0 8 0 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 11 0 2 1 0 1 1 0 8 0 pfstkey 112 11 0 2 1 0 1 1 0 8 0 pfstate 328 11 0 2 1 0 1 1 0 8 0 pfrule 1360 21 0 16 2 1 1 2 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 167 0 0 11 0 11 11 0 8 0 art_table 32 168 0 0 2 0 2 2 0 8 0 art_node 16 33 0 3 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino1pl 128 1421 0 20 46 0 46 46 0 8 0 ffsino 272 1421 0 20 94 0 94 94 0 8 0 nchpl 144 1660 0 52 61 1 60 60 0 8 0 uvmvnodes 72 1431 0 0 27 0 27 27 0 8 0 vnodes 208 1431 0 0 76 0 76 76 0 8 0 namei 1024 4129 0 4129 2 1 1 1 0 8 1 percpumem 16 30 0 0 1 0 1 1 0 8 0 scxspl 192 4208 0 4208 9 2 7 7 0 8 7 plimitpl 152 15 0 8 1 0 1 1 0 8 0 sigapl 432 224 0 210 2 0 2 2 0 8 0 knotepl 112 39 0 28 1 0 1 1 0 8 0 kqueuepl 104 2 0 0 1 0 1 1 0 8 0 pipepl 112 148 0 135 2 1 1 1 0 8 0 fdescpl 488 225 0 210 3 0 3 3 0 8 0 filepl 152 1112 0 1053 3 0 3 3 0 8 0 lockfpl 104 5 0 4 1 0 1 1 0 8 0 lockfspl 48 3 0 2 1 0 1 1 0 8 0 sessionpl 112 19 0 9 1 0 1 1 0 8 0 pgrppl 48 19 0 9 1 0 1 1 0 8 0 ucredpl 96 52 0 43 1 0 1 1 0 8 0 zombiepl 144 210 0 210 2 1 1 1 0 8 1 processpl 896 240 0 210 4 0 4 4 0 8 0 procpl 632 247 0 210 4 0 4 4 0 8 0 sockpl 384 80 0 61 2 0 2 2 0 8 0 mcl4k 4096 3 0 0 1 0 1 1 0 8 0 mcl2k 2048 80 0 0 10 0 10 10 0 8 0 mtagpl 80 1 0 0 1 0 1 1 0 8 0 mbufpl 256 112 0 0 6 0 6 6 0 8 0 bufpl 256 5881 0 1309 286 0 286 286 0 8 0 anonpl 16 22099 0 20540 14 1 13 13 0 124 5 amapchunkpl 152 737 0 669 5 0 5 5 0 158 1 amappl16 192 142 0 112 2 0 2 2 0 8 0 amappl15 184 1 0 1 1 0 1 1 0 8 1 amappl14 176 50 0 44 1 0 1 1 0 8 0 amappl12 160 10 0 10 1 1 0 1 0 8 0 amappl11 152 59 0 44 1 0 1 1 0 8 0 amappl10 144 12 0 10 1 0 1 1 0 8 0 amappl9 136 435 0 432 1 0 1 1 0 8 0 amappl8 128 128 0 116 1 0 1 1 0 8 0 amappl7 120 32 0 28 1 0 1 1 0 8 0 amappl6 112 61 0 54 1 0 1 1 0 8 0 amappl5 104 129 0 116 1 0 1 1 0 8 0 amappl4 96 493 0 467 1 0 1 1 0 8 0 amappl3 88 120 0 110 1 0 1 1 0 8 0 amappl2 80 902 0 841 4 1 3 3 0 8 1 amappl1 72 15277 0 14849 25 7 18 20 0 8 8 amappl 80 476 0 446 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 17 0 17 1 1 0 1 0 8 0 aobjpl 64 1 0 0 1 0 1 1 0 8 0 uaddrrnd 24 225 0 210 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 225 0 210 1 0 1 1 0 8 0 vmmpekpl 168 6384 0 6362 2 0 2 2 0 8 0 vmmpepl 168 32160 0 31220 92 12 80 80 0 357 39 vmsppl 368 224 0 210 2 0 2 2 0 8 0 pdppl 4096 457 0 420 6 0 6 6 0 8 1 pvpl 32 112389 0 108379 120 5 115 115 0 265 81 pmappl 232 224 0 210 1 0 1 1 0 8 0 extentpl 40 41 0 26 1 0 1 1 0 8 0 phpool 112 427 0 4 13 0 13 13 0 8 0 ddb{1}>