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 * 67080 16775 0 0 0 1K syz-executor.0 307176 22510 0 0x14000 0x200 0 systqmp 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,ffff800020b61520) at ifa_update_broadaddr+0x61 sys/net/if.c:2970 in_ioctl_change_ifaddr(8040691a,ffff800020b61500,ffff800000a67000,1) at in_ioctl_change_ifaddr+0x5a3 sys/netinet/in.c:451 in_ioctl(8040691a,ffff800020b61500,ffff800000a67000,1) at in_ioctl+0x205 sys/netinet/in.c:234 ifioctl(fffffd806e988a88,8040691a,ffff800020b61500,ffff800020ab1160) at ifioctl+0xb64 sys/net/if.c:2202 sys_ioctl(ffff800020ab1160,ffff800020b61618,ffff800020b61660) at sys_ioctl+0x5b9 syscall(ffff800020b616e0) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:92 [inline] syscall(ffff800020b616e0) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:555 Xsyscall(6,0,ffffffffffffff36,0,3,ebdff599010) at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffbdf20, count: 6 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,ffff800020b61520) at ifa_update_broadaddr+0x61 sys/net/if.c:2970 in_ioctl_change_ifaddr(8040691a,ffff800020b61500,ffff800000a67000,1) at in_ioctl_change_ifaddr+0x5a3 sys/netinet/in.c:451 in_ioctl(8040691a,ffff800020b61500,ffff800000a67000,1) at in_ioctl+0x205 sys/netinet/in.c:234 ifioctl(fffffd806e988a88,8040691a,ffff800020b61500,ffff800020ab1160) at ifioctl+0xb64 sys/net/if.c:2202 sys_ioctl(ffff800020ab1160,ffff800020b61618,ffff800020b61660) at sys_ioctl+0x5b9 syscall(ffff800020b616e0) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:92 [inline] syscall(ffff800020b616e0) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:555 Xsyscall(6,0,ffffffffffffff36,0,3,ebdff599010) at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffbdf20, count: -9 ddb{1}> show registers rdi 0 rsi 0x1 rbp 0xffff800020b61210 rbx 0xffff800020b612c0 rdx 0x8b rcx 0x2 rax 0x1 r8 0xffffffff814600ef kprintf+0x16f r9 0x1 r10 0x43151dc8c7d6e125 r11 0xb148643916f313d2 r12 0x3000000008 r13 0xffff800020b61220 r14 0x100 r15 0x1 rip 0xffffffff812a6278 db_enter+0x18 cs 0x8 rflags 0x246 rsp 0xffff800020b61200 ss 0x10 db_enter+0x18: addq $0x8,%rsp ddb{1}> show proc PROC (syz-executor.0) pid=67080 stat=onproc flags process=0 proc=0 pri=51, usrpri=51, nice=20 forw=0xffffffffffffffff, list=0xffff800020ab13d8,0xffffffff826438b8 process=0xffff800020adc380 user=0xffff800020b5c000, vmspace=0xfffffd807f00b170 estcpu=36, cpticks=1, pctcpu=0.0 user=0, sys=1, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND *16775 67080 94124 0 7 0 syz-executor.0 94124 478749 46947 0 3 0x82 nanosleep syz-executor.0 46947 129956 44513 0 3 0x82 kqread syz-execprog 46947 454004 44513 0 3 0x4000082 thrsleep syz-execprog 46947 417191 44513 0 3 0x4000082 thrsleep syz-execprog 46947 115222 44513 0 3 0x4000082 thrsleep syz-execprog 46947 91096 44513 0 3 0x4000082 thrsleep syz-execprog 46947 409347 44513 0 3 0x4000082 thrsleep syz-execprog 46947 466353 44513 0 3 0x4000082 thrsleep syz-execprog 46947 361573 44513 0 3 0x4000082 thrsleep syz-execprog 46947 346045 44513 0 3 0x4000082 thrsleep syz-execprog 44513 516754 83350 0 3 0x10008a pause ksh 83350 130711 98767 0 3 0x92 select sshd 39903 322254 1 0 3 0x100083 ttyin getty 98767 481751 1 0 3 0x80 select sshd 63616 331142 27500 74 3 0x100092 bpf pflogd 27500 227897 1 0 3 0x80 netio pflogd 378 204942 58786 73 3 0x100090 kqread syslogd 58786 372423 1 0 3 0x100082 netio syslogd 85531 407437 1 77 3 0x100090 poll dhclient 18062 156546 1 0 3 0x80 poll dhclient 62422 338672 0 0 3 0x14200 pgzero zerothread 11843 35903 0 0 3 0x14200 aiodoned aiodoned 97485 295656 0 0 3 0x14200 syncer update 62917 56344 0 0 3 0x14200 cleaner cleaner 66211 260935 0 0 3 0x14200 reaper reaper 18240 267079 0 0 3 0x14200 pgdaemon pagedaemon 60252 309750 0 0 3 0x14200 bored crynlk 12083 109396 0 0 3 0x14200 bored crypto 51235 225258 0 0 3 0x40014200 acpi0 acpi0 37932 333464 0 0 3 0x40014200 idle1 85812 169627 0 0 3 0x14200 bored softnet 22510 307176 0 0 7 0x14200 systqmp 89229 83817 0 0 3 0x14200 bored systq 39009 462815 0 0 3 0x40014200 bored softclock 51394 196203 0 0 3 0x40014200 idle0 4152 172568 0 0 3 0x14200 bored smr 1 185436 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{1}> show all locks Process 16775 (syz-executor.0) thread 0xffff800020ab1160 (67080) exclusive rwlock netlock r = 0 (0xffffffff8249f9e8) #0 witness_lock+0x52e sys/kern/subr_witness.c:1163 #1 in_ioctl_change_ifaddr+0x3f #2 in_ioctl+0x205 sys/netinet/in.c:234 #3 ifioctl+0xb64 sys/net/if.c:2202 #4 sys_ioctl+0x5b9 #5 syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:92 [inline] #5 syscall+0x4a4 sys/arch/amd64/amd64/trap.c:555 #6 Xsyscall+0x128 exclusive kernel_lock &kernel_lock r = 0 (0xffffffff8263bf20) #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 79 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 73 12K 12K 78643K 955 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 3 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 0 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 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 4064 0 4064 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 112 154 0 141 1 0 1 1 0 8 0 fdescpl 488 227 0 212 3 0 3 3 0 8 0 filepl 152 1121 0 1062 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 2 0 0 1 0 1 1 0 8 0 mcl2k 2048 70 0 0 9 0 9 9 0 8 0 mtagpl 80 1 0 0 1 0 1 1 0 8 0 mbufpl 256 87 0 0 6 0 6 6 0 8 0 bufpl 256 5887 0 1315 286 0 286 286 0 8 0 anonpl 16 22334 0 20717 14 1 13 13 0 124 5 amapchunkpl 152 825 0 759 5 0 5 5 0 158 1 amappl16 192 139 0 106 2 0 2 2 0 8 0 amappl15 184 8 0 6 1 0 1 1 0 8 0 amappl14 176 28 0 24 1 0 1 1 0 8 0 amappl12 160 17 0 14 1 0 1 1 0 8 0 amappl11 152 47 0 32 1 0 1 1 0 8 0 amappl10 144 9 0 7 1 0 1 1 0 8 0 amappl9 136 463 0 458 1 0 1 1 0 8 0 amappl8 128 133 0 120 1 0 1 1 0 8 0 amappl7 120 36 0 30 1 0 1 1 0 8 0 amappl6 112 79 0 69 1 0 1 1 0 8 0 amappl5 104 123 0 109 1 0 1 1 0 8 0 amappl4 96 496 0 470 1 0 1 1 0 8 0 amappl3 88 116 0 111 1 0 1 1 0 8 0 amappl2 80 950 0 888 3 0 3 3 0 8 1 amappl1 72 15387 0 14970 25 7 18 20 0 8 8 amappl 80 478 0 449 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 6404 2 0 2 2 0 8 0 vmmpepl 168 32587 0 31645 83 3 80 80 0 357 39 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 113011 0 108957 115 0 115 115 0 265 82 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 112 425 0 3 13 0 13 13 0 8 0 ddb{1}>