login: panic: ifa_update_broadaddr does not support dynamic length Stopped at db_enter+0x18: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND *424173 30707 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,ffff800020b64d80) at ifa_update_broadaddr+0x61 sys/net/if.c:2970 in_ioctl(80206913,ffff800020b64d70,ffff800000a67000,1) at in_ioctl+0x463 sys/netinet/in.c:299 ifioctl(fffffd806e986a88,80206913,ffff800020b64d70,ffff800020ab1650) at ifioctl+0xb64 sys/net/if.c:2202 sys_ioctl(ffff800020ab1650,ffff800020b64e88,ffff800020b64ed0) at sys_ioctl+0x5b9 syscall(ffff800020b64f50) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:92 [inline] syscall(ffff800020b64f50) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:555 Xsyscall(6,0,ffffffffffffff36,0,3,37205c9f010) at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffe4040, 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,ffff800020b64d80) at ifa_update_broadaddr+0x61 sys/net/if.c:2970 in_ioctl(80206913,ffff800020b64d70,ffff800000a67000,1) at in_ioctl+0x463 sys/netinet/in.c:299 ifioctl(fffffd806e986a88,80206913,ffff800020b64d70,ffff800020ab1650) at ifioctl+0xb64 sys/net/if.c:2202 sys_ioctl(ffff800020ab1650,ffff800020b64e88,ffff800020b64ed0) at sys_ioctl+0x5b9 syscall(ffff800020b64f50) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:92 [inline] syscall(ffff800020b64f50) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:555 Xsyscall(6,0,ffffffffffffff36,0,3,37205c9f010) at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffe4040, count: -8 ddb{1}> show registers rdi 0 rsi 0x1 rbp 0xffff800020b64b10 rbx 0xffff800020b64bc0 rdx 0x8b rcx 0x2 rax 0x1 r8 0xffffffff8149ad7f kprintf+0x16f r9 0x1 r10 0x16dac23493e9def3 r11 0x60203da766155c7f r12 0x3000000008 r13 0xffff800020b64b20 r14 0x100 r15 0x1 rip 0xffffffff8213f9a8 db_enter+0x18 cs 0x8 rflags 0x246 rsp 0xffff800020b64b00 ss 0x10 db_enter+0x18: addq $0x8,%rsp ddb{1}> show proc PROC (syz-executor.0) pid=424173 stat=onproc flags process=0 proc=0 pri=50, usrpri=50, nice=20 forw=0xffffffffffffffff, list=0xffff800020ab1b40,0xffffffff8266d588 process=0xffff800020adc380 user=0xffff800020b60000, vmspace=0xfffffd807f00b450 estcpu=36, cpticks=1, pctcpu=0.0 user=0, sys=1, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND *30707 424173 12839 0 7 0 syz-executor.0 12839 252467 77617 0 3 0x82 nanosleep syz-executor.0 77617 298717 94438 0 3 0x82 thrsleep syz-execprog 77617 338307 94438 0 3 0x4000082 thrsleep syz-execprog 77617 175558 94438 0 3 0x4000082 thrsleep syz-execprog 77617 455961 94438 0 3 0x4000082 thrsleep syz-execprog 77617 315034 94438 0 3 0x4000082 thrsleep syz-execprog 77617 457740 94438 0 3 0x4000082 thrsleep syz-execprog 77617 421099 94438 0 3 0x4000082 thrsleep syz-execprog 77617 402748 94438 0 3 0x4000082 thrsleep syz-execprog 77617 20654 94438 0 3 0x4000082 kqread syz-execprog 94438 296505 80238 0 3 0x10008a pause ksh 80238 396648 81483 0 3 0x92 select sshd 19075 350672 1 0 3 0x100083 ttyin getty 81483 192179 1 0 3 0x80 select sshd 32837 106033 37556 74 3 0x100092 bpf pflogd 37556 131405 1 0 3 0x80 netio pflogd 23037 60479 15689 73 3 0x100090 kqread syslogd 15689 132260 1 0 3 0x100082 netio syslogd 84172 449013 1 77 3 0x100090 poll dhclient 57143 470101 1 0 3 0x80 poll dhclient 84686 189303 0 0 3 0x14200 pgzero zerothread 30269 464840 0 0 3 0x14200 aiodoned aiodoned 73676 269151 0 0 3 0x14200 syncer update 68889 490874 0 0 3 0x14200 cleaner cleaner 84430 141947 0 0 3 0x14200 reaper reaper 96848 156877 0 0 3 0x14200 pgdaemon pagedaemon 40759 141066 0 0 3 0x14200 bored crynlk 49868 345966 0 0 3 0x14200 bored crypto 93914 238506 0 0 3 0x40014200 acpi0 acpi0 94465 322100 0 0 3 0x40014200 idle1 31951 162791 0 0 3 0x14200 bored softnet 26692 311398 0 0 3 0x14200 bored systqmp 24511 153239 0 0 3 0x14200 bored systq 36978 186024 0 0 3 0x40014200 bored softclock 6629 175951 0 0 7 0x40014200 idle0 27899 265099 0 0 3 0x14200 bored smr 1 221413 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{1}> show all locks Process 30707 (syz-executor.0) thread 0xffff800020ab1650 (424173) exclusive rwlock netlock r = 0 (0xffffffff8251b198) #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 (0xffffffff8262db68) #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 15 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 384 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 199 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 70 11K 12K 78643K 957 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 3336 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 1 1 0 1 0 8 0 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 0 1 0 1 1 0 8 0 pfstkey 112 11 0 0 1 0 1 1 0 8 0 pfstate 328 11 0 0 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 1422 0 20 46 0 46 46 0 8 0 ffsino 272 1422 0 20 94 0 94 94 0 8 0 nchpl 144 1661 0 49 60 0 60 60 0 8 0 uvmvnodes 72 1432 0 0 27 0 27 27 0 8 0 vnodes 208 1432 0 0 76 0 76 76 0 8 0 namei 1024 4142 0 4142 1 0 1 1 0 8 1 percpumem 16 30 0 0 1 0 1 1 0 8 0 scxspl 192 4083 0 4083 2 1 1 2 0 8 1 plimitpl 152 15 0 8 1 0 1 1 0 8 0 sigapl 432 226 0 212 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 112 156 0 143 1 0 1 1 0 8 0 fdescpl 488 227 0 212 3 0 3 3 0 8 0 filepl 152 1123 0 1064 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 144 212 0 212 1 0 1 1 0 8 1 processpl 896 242 0 212 4 0 4 4 0 8 0 procpl 632 250 0 212 4 0 4 4 0 8 0 sockpl 384 80 0 61 2 0 2 2 0 8 0 mcl4k 4096 1 0 0 1 0 1 1 0 8 0 mcl2k 2048 74 0 0 10 0 10 10 0 8 0 mtagpl 80 1 0 0 1 0 1 1 0 8 0 mbufpl 256 89 0 0 6 0 6 6 0 8 0 bufpl 256 5887 0 1315 286 0 286 286 0 8 0 anonpl 16 22026 0 20453 14 1 13 13 0 124 5 amapchunkpl 152 799 0 733 5 0 5 5 0 158 2 amappl16 192 137 0 110 2 0 2 2 0 8 0 amappl14 176 29 0 24 1 0 1 1 0 8 0 amappl12 160 15 0 12 1 0 1 1 0 8 0 amappl11 152 52 0 37 1 0 1 1 0 8 0 amappl10 144 11 0 8 1 0 1 1 0 8 0 amappl9 136 460 0 455 1 0 1 1 0 8 0 amappl8 128 129 0 120 1 0 1 1 0 8 0 amappl7 120 35 0 31 1 0 1 1 0 8 0 amappl6 112 76 0 66 1 0 1 1 0 8 0 amappl5 104 127 0 111 1 0 1 1 0 8 0 amappl4 96 499 0 473 1 0 1 1 0 8 0 amappl3 88 114 0 109 1 0 1 1 0 8 0 amappl2 80 952 0 893 3 0 3 3 0 8 1 amappl1 72 15035 0 14606 25 7 18 20 0 8 8 amappl 80 479 0 450 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 24 227 0 212 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 227 0 212 1 0 1 1 0 8 0 vmmpekpl 168 6426 0 6403 2 0 2 2 0 8 0 vmmpepl 168 32458 0 31517 84 4 80 80 0 357 38 vmsppl 368 226 0 212 2 0 2 2 0 8 0 pdppl 4096 461 0 424 6 0 6 6 0 8 1 pvpl 32 112227 0 108238 115 0 115 115 0 265 81 pmappl 232 226 0 212 1 0 1 1 0 8 0 extentpl 40 41 0 26 1 0 1 1 0 8 0 phpool 112 426 0 3 13 0 13 13 0 8 0 ddb{1}>