panic: ifa_update_broadaddr does not support dynamic length Stopped at db_enter+0x18: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND 117742 81562 0 0 0 1 syz-executor.1 *239024 81562 0 0 0x4000000 0K syz-executor.1 db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:398 panic(ffffffff822733d0) at panic+0x15c sys/kern/subr_prf.c:207 ifa_update_broadaddr(ffff800000a24000,ffff800000a31700,ffff800021b8f710) at ifa_update_broadaddr+0x61 sys/net/if.c:3077 in_ioctl(80206913,ffff800021b8f700,ffff800000a24000,1) at in_ioctl+0x5eb sys/netinet/in.c:320 ifioctl(fffffd8071938c90,80206913,ffff800021b8f700,ffff800020ad7128) at ifioctl+0xe70 sys/net/if.c:2290 soo_ioctl(fffffd8066df0c90,80206913,ffff800021b8f700,ffff800020ad7128) at soo_ioctl+0x27c sys/kern/sys_socket.c:138 sys_ioctl(ffff800020ad7128,ffff800021b8f818,ffff800021b8f860) at sys_ioctl+0x4a5 syscall(ffff800021b8f8e0) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800021b8f8e0) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xec99926abd0, 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{0}> ddb{0}> set $lines = 0 ddb{0}> set $maxwidth = 0 ddb{0}> show panic ifa_update_broadaddr does not support dynamic length ddb{0}> trace db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:398 panic(ffffffff822733d0) at panic+0x15c sys/kern/subr_prf.c:207 ifa_update_broadaddr(ffff800000a24000,ffff800000a31700,ffff800021b8f710) at ifa_update_broadaddr+0x61 sys/net/if.c:3077 in_ioctl(80206913,ffff800021b8f700,ffff800000a24000,1) at in_ioctl+0x5eb sys/netinet/in.c:320 ifioctl(fffffd8071938c90,80206913,ffff800021b8f700,ffff800020ad7128) at ifioctl+0xe70 sys/net/if.c:2290 soo_ioctl(fffffd8066df0c90,80206913,ffff800021b8f700,ffff800020ad7128) at soo_ioctl+0x27c sys/kern/sys_socket.c:138 sys_ioctl(ffff800020ad7128,ffff800021b8f818,ffff800021b8f860) at sys_ioctl+0x4a5 syscall(ffff800021b8f8e0) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800021b8f8e0) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xec99926abd0, count: -9 ddb{0}> show registers rdi 0xffffffff81722db7 db_enter+0x17 rsi 0x15ab __ALIGN_SIZE+0x5ab rbp 0xffff800021b8f430 rbx 0xffff800021b8f4e0 rdx 0x15ac __ALIGN_SIZE+0x5ac rcx 0xffff800022d90000 rax 0xffff800022d90000 r8 0xffffffff820becdf kprintf+0x16f r9 0x1 r10 0x25 r11 0x29537dea8a6dbf27 r12 0x3000000008 r13 0xffff800021b8f440 r14 0x100 r15 0x1 rip 0xffffffff81722db8 db_enter+0x18 cs 0x8 rflags 0x246 rsp 0xffff800021b8f420 ss 0x10 db_enter+0x18: addq $0x8,%rsp ddb{0}> show proc PROC (syz-executor.1) pid=239024 stat=onproc flags process=0 proc=4000000 pri=74, usrpri=74, nice=20 forw=0xffffffffffffffff, list=0xffff800020ad6c48,0xffffffff826395b0 process=0xffff800020a932e0 user=0xffff800021b8a000, vmspace=0xfffffd807f000b80 estcpu=36, cpticks=0, pctcpu=0.0 user=0, sys=0, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 81562 117742 87569 0 7 0 syz-executor.1 *81562 239024 87569 0 7 0x4000000 syz-executor.1 20144 39709 17944 0 2 0 syz-executor.0 20144 455706 17944 0 3 0x4000080 fsleep syz-executor.0 11406 216281 0 0 3 0x14200 bored sosplice 87569 292058 39944 0 3 0x82 nanosleep syz-executor.1 17944 282530 39944 0 3 0x82 nanosleep syz-executor.0 39944 182999 65061 0 3 0x82 thrsleep syz-fuzzer 39944 504962 65061 0 3 0x4000082 nanosleep syz-fuzzer 39944 340420 65061 0 3 0x4000082 kqread syz-fuzzer 39944 310142 65061 0 3 0x4000082 thrsleep syz-fuzzer 39944 281698 65061 0 3 0x4000082 thrsleep syz-fuzzer 39944 203443 65061 0 3 0x4000082 thrsleep syz-fuzzer 39944 404861 65061 0 3 0x4000082 thrsleep syz-fuzzer 39944 182721 65061 0 3 0x4000082 thrsleep syz-fuzzer 39944 264024 65061 0 3 0x4000082 thrsleep syz-fuzzer 39944 354448 65061 0 3 0x4000082 thrsleep syz-fuzzer 65061 518328 23096 0 3 0x10008a pause ksh 23096 131348 11873 0 3 0x92 select sshd 78780 9404 1 0 3 0x100083 ttyin getty 11873 102450 1 0 3 0x80 select sshd 89225 384858 43800 74 3 0x100092 bpf pflogd 43800 349860 1 0 3 0x80 netio pflogd 99778 397218 64385 73 3 0x100090 kqread syslogd 64385 469462 1 0 3 0x100082 netio syslogd 73638 230206 1 77 3 0x100090 poll dhclient 71780 318713 1 0 3 0x80 poll dhclient 68803 93000 0 0 3 0x14200 bored smr 23745 481738 0 0 2 0x14200 zerothread 41731 444404 0 0 3 0x14200 aiodoned aiodoned 39389 252534 0 0 3 0x14200 syncer update 54367 364647 0 0 3 0x14200 cleaner cleaner 72456 192016 0 0 3 0x14200 reaper reaper 11282 72819 0 0 3 0x14200 pgdaemon pagedaemon 82995 220913 0 0 3 0x14200 bored crynlk 31248 367796 0 0 3 0x14200 bored crypto 21157 191439 0 0 3 0x40014200 acpi0 acpi0 38266 155509 0 0 3 0x40014200 idle1 43272 158953 0 0 3 0x14200 bored softnet 79478 493387 0 0 3 0x14200 bored systqmp 22839 220985 0 0 3 0x14200 bored systq 25341 62767 0 0 3 0x40014200 bored softclock 90467 2609 0 0 3 0x40014200 idle0 1 123561 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks Process 81562 (syz-executor.1) thread 0xffff800020ad7128 (239024) exclusive rwlock netlock r = 0 (0xffffffff824f01d8) #0 witness_lock+0x52e sys/kern/subr_witness.c:1164 #1 in_ioctl+0x1f5 #2 ifioctl+0xe70 sys/net/if.c:2290 #3 soo_ioctl+0x27c sys/kern/sys_socket.c:138 #4 sys_ioctl+0x4a5 #5 syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] #5 syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 #6 Xsyscall+0x128 exclusive kernel_lock &kernel_lock r = 0 (0xffffffff82662ab0) #0 witness_lock+0x52e sys/kern/subr_witness.c:1164 #1 soo_ioctl+0x26a sys/kern/sys_socket.c:138 #2 sys_ioctl+0x4a5 #3 syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] #3 syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 #4 Xsyscall+0x128 ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 9521 6424K 7387K 78643K 11658 0 pcb 13 9K 10K 78643K 508 0 rtable 112 4K 4K 78643K 304 0 ifaddr 79 16K 16K 78643K 137 0 counters 43 33K 34K 78643K 63 0 ioctlops 0 0K 4K 78643K 1487 0 iov 0 0K 16K 78643K 65 0 mount 1 1K 1K 78643K 1 0 vnodes 1228 77K 78K 78643K 1531 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 5K 78643K 4 0 VM map 2 1K 1K 78643K 2 0 sem 12 0K 0K 78643K 71 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1809 196K 290K 78643K 12766 0 file desc 6 17K 25K 78643K 349 0 sigio 0 0K 0K 78643K 6 0 proc 63 63K 95K 78643K 491 0 subproc 32 2K 2K 78643K 34 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 0 0K 0K 78643K 806 0 in_multi 65 3K 3K 78643K 168 0 ether_multi 1 0K 0K 78643K 14 0 mrt 0 0K 0K 78643K 6 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 55 254K 254K 78643K 55 0 exec 0 0K 1K 78643K 248 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 123 55K 64K 78643K 2209 0 UVM aobj 27 2K 2K 78643K 28 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 67 0 NDP 12 0K 0K 78643K 26 0 temp 133 3026K 3094K 78643K 13382 0 kqueue 3 4K 20K 78643K 60 0 SYN cache 2 16K 16K 78643K 2 0 ddb{0}> show all pools Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle arp 64 7 0 1 1 0 1 1 0 8 0 plcache 128 20 0 0 1 0 1 1 0 8 0 rtpcb 80 53 0 51 1 0 1 1 0 8 0 rtentry 112 53 0 7 2 0 2 2 0 8 0 unpcb 120 353 0 343 1 0 1 1 0 8 0 syncache 264 7 0 7 2 2 0 1 0 8 0 tcpqe 32 802 0 802 1 1 0 1 0 8 0 tcpcb 544 614 0 608 4 1 3 3 0 8 2 inpcb 280 1419 0 1409 4 1 3 3 0 8 2 rttmr 72 2 0 2 1 1 0 1 0 8 0 ip6q 72 1 0 1 1 0 1 1 0 8 1 ip6af 40 3 0 3 1 0 1 1 0 8 1 nd6 48 7 0 1 1 0 1 1 0 8 0 pkpcb 40 1 0 1 1 1 0 1 0 8 0 ppxss 1128 4 0 4 1 1 0 1 0 8 0 pffrag 232 10 0 10 2 1 1 1 0 482 1 pffrnode 88 10 0 10 2 1 1 1 0 8 1 pffrent 40 408 0 408 2 1 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 54 0 8 1 0 1 1 0 8 0 pfstkey 112 54 0 8 2 0 2 2 0 8 0 pfstate 328 54 0 8 4 0 4 4 0 8 0 pfrule 1360 21 0 16 2 1 1 2 0 8 0 art_heap8 4096 2 0 0 2 0 2 2 0 8 0 art_heap4 256 219 0 17 14 0 14 14 0 8 0 art_table 32 221 0 17 2 0 2 2 0 8 0 art_node 16 52 0 10 1 0 1 1 0 8 0 sysvmsgpl 40 26 0 11 1 0 1 1 0 8 0 semupl 112 3 0 3 1 1 0 1 0 8 0 semapl 112 67 0 57 1 0 1 1 0 8 0 shmpl 112 26 0 1 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino1pl 128 1941 0 535 46 0 46 46 0 8 0 ffsino 272 1941 0 535 95 0 95 95 0 8 0 nchpl 144 2751 0 1131 61 0 61 61 0 8 0 uvmvnodes 72 2223 0 0 41 0 41 41 0 8 0 vnodes 208 2223 0 0 117 0 117 117 0 8 0 namei 1024 7997 0 7997 1 0 1 1 0 8 1 percpumem 16 42 0 10 1 0 1 1 0 8 0 vcpupl 1984 4 0 0 1 0 1 1 0 8 0 vmpool 560 10 0 6 1 0 1 1 0 8 0 scxspl 192 8303 0 8303 5 4 1 4 0 8 1 plimitpl 152 39 0 31 1 0 1 1 0 8 0 sigapl 424 565 0 532 4 0 4 4 0 8 0 futexpl 56 9271 0 9270 1 0 1 1 0 8 0 knotepl 112 146 0 127 1 0 1 1 0 8 0 kqueuepl 144 187 0 185 1 0 1 1 0 8 0 pipelkpl 48 165 0 155 1 0 1 1 0 8 0 pipepl 120 330 0 311 2 0 2 2 0 8 1 fdescpl 496 549 0 532 3 0 3 3 0 8 0 filepl 152 5033 0 4932 6 0 6 6 0 8 2 lockfpl 104 102 0 101 1 0 1 1 0 8 0 lockfspl 48 39 0 38 1 0 1 1 0 8 0 sessionpl 112 18 0 7 1 0 1 1 0 8 0 pgrppl 48 18 0 7 1 0 1 1 0 8 0 ucredpl 96 454 0 444 1 0 1 1 0 8 0 zombiepl 144 532 0 532 1 0 1 1 0 8 1 processpl 960 565 0 532 5 0 5 5 0 8 0 procpl 624 1430 0 1386 4 0 4 4 0 8 0 sosppl 128 17 0 17 1 1 0 1 0 8 0 sockpl 400 1880 0 1858 8 3 5 6 0 8 2 mcl64k 65536 14 0 0 2 0 2 2 0 8 0 mcl16k 16384 4 0 0 1 0 1 1 0 8 0 mcl12k 12288 5 0 0 1 0 1 1 0 8 0 mcl9k 9216 2 0 0 1 0 1 1 0 8 0 mcl8k 8192 9 0 0 2 0 2 2 0 8 0 mcl4k 4096 10 0 0 2 0 2 2 0 8 0 mcl2k2 2112 4 0 0 1 0 1 1 0 8 0 mcl2k 2048 216 0 0 26 0 26 26 0 8 0 mtagpl 80 94 0 0 2 0 2 2 0 8 0 mbufpl 256 477 0 0 28 0 28 28 0 8 0 bufpl 280 4847 0 185 333 0 333 333 0 8 0 anonpl 16 67939 0 50704 85 7 78 78 0 124 8 amapchunkpl 152 3344 0 3204 16 5 11 11 0 158 5 amappl16 192 2500 0 1550 51 3 48 51 0 8 0 amappl15 184 167 0 164 1 0 1 1 0 8 0 amappl14 176 4 0 3 2 1 1 1 0 8 0 amappl13 168 176 0 173 1 0 1 1 0 8 0 amappl12 160 11 0 9 1 0 1 1 0 8 0 amappl11 152 67 0 49 1 0 1 1 0 8 0 amappl10 144 15 0 12 1 0 1 1 0 8 0 amappl9 136 389 0 386 1 0 1 1 0 8 0 amappl8 128 342 0 312 2 0 2 2 0 8 0 amappl7 120 121 0 108 1 0 1 1 0 8 0 amappl6 112 27 0 22 2 1 1 1 0 8 0 amappl5 104 303 0 287 1 0 1 1 0 8 0 amappl4 96 660 0 629 1 0 1 1 0 8 0 amappl3 88 279 0 269 1 0 1 1 0 8 0 amappl2 80 3621 0 3542 3 1 2 3 0 8 0 amappl1 72 22110 0 21660 25 15 10 20 0 8 0 amappl 80 1680 0 1633 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 18 0 17 1 0 1 1 0 8 0 aobjpl 64 27 0 1 1 0 1 1 0 8 0 uaddrrnd 24 559 0 538 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 559 0 538 1 0 1 1 0 8 0 vmmpekpl 168 7898 0 7859 2 0 2 2 0 8 0 vmmpepl 168 74674 0 72460 124 26 98 117 0 357 1 vmsppl 368 558 0 538 2 0 2 2 0 8 0 pdppl 4096 1126 0 1080 6 0 6 6 0 8 0 pvpl 32 215684 0 195236 195 9 186 186 0 265 19 pmappl 232 558 0 538 2 0 2 2 0 8 0 extentpl 40 46 0 29 1 0 1 1 0 8 0 phpool 112 204 0 7 6 0 6 6 0 8 0