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 49560 31394 0 0 0 1 syz-executor.0 *503756 31394 0 0 0x4000000 0K 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(ffff800000b57800,ffff800000af6500,ffff800021d576b0) at ifa_update_broadaddr+0x61 sys/net/if.c:2986 in_ioctl(80206913,ffff800021d576a0,ffff800000b57800,1) at in_ioctl+0x463 sys/netinet/in.c:311 ifioctl(fffffd806f6ce900,80206913,ffff800021d576a0,ffff800020acf168) at ifioctl+0xb64 sys/net/if.c:2218 sys_ioctl(ffff800020acf168,ffff800021d577b8,ffff800021d57800) at sys_ioctl+0x5b9 syscall(ffff800021d57880) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:92 [inline] syscall(ffff800021d57880) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:555 Xsyscall(6,0,ffffffffffffff36,0,3,3240b5e9010) at Xsyscall+0x128 end of kernel end trace frame: 0x326edb66ed0, 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{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() at panic+0x15c sys/kern/subr_prf.c:207 ifa_update_broadaddr(ffff800000b57800,ffff800000af6500,ffff800021d576b0) at ifa_update_broadaddr+0x61 sys/net/if.c:2986 in_ioctl(80206913,ffff800021d576a0,ffff800000b57800,1) at in_ioctl+0x463 sys/netinet/in.c:311 ifioctl(fffffd806f6ce900,80206913,ffff800021d576a0,ffff800020acf168) at ifioctl+0xb64 sys/net/if.c:2218 sys_ioctl(ffff800020acf168,ffff800021d577b8,ffff800021d57800) at sys_ioctl+0x5b9 syscall(ffff800021d57880) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:92 [inline] syscall(ffff800021d57880) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:555 Xsyscall(6,0,ffffffffffffff36,0,3,3240b5e9010) at Xsyscall+0x128 end of kernel end trace frame: 0x326edb66ed0, count: -8 ddb{0}> show registers rdi 0xffffffff8163efc7 db_enter+0x17 rsi 0x1636 __ALIGN_SIZE+0x636 rbp 0xffff800021d57440 rbx 0xffff800021d574f0 rdx 0x1637 __ALIGN_SIZE+0x637 rcx 0xffff800023786000 rax 0xffff800023786000 r8 0xffffffff8178440f kprintf+0x16f r9 0x1 r10 0x25 r11 0x6b584915affa8296 r12 0x3000000008 r13 0xffff800021d57450 r14 0x100 r15 0x1 rip 0xffffffff8163efc8 db_enter+0x18 cs 0x8 rflags 0x246 rsp 0xffff800021d57430 ss 0x10 db_enter+0x18: addq $0x8,%rsp ddb{0}> show proc PROC (syz-executor.0) pid=503756 stat=onproc flags process=0 proc=4000000 pri=81, usrpri=81, nice=20 forw=0xffffffffffffffff, list=0xffff800020acf8d0,0xffffffff82646fa0 process=0xffff800020adc000 user=0xffff800021d52000, vmspace=0xfffffd807f00a170 estcpu=36, cpticks=0, pctcpu=0.0 user=0, sys=0, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 31394 49560 79027 0 7 0 syz-executor.0 *31394 503756 79027 0 7 0x4000000 syz-executor.0 29583 200671 6720 0 3 0x80 nanosleep syz-executor.1 29583 57502 6720 0 3 0x4000080 pipewr syz-executor.1 29583 358252 6720 0 3 0x4000080 fsleep syz-executor.1 79027 467655 38426 0 3 0x82 nanosleep syz-executor.0 75443 123863 1 0 3 0x100083 ttyin getty 6720 150819 38426 0 3 0x82 nanosleep syz-executor.1 51101 439763 0 0 3 0x14200 bored sosplice 38426 273682 1133 0 3 0x82 thrsleep syz-fuzzer 38426 122524 1133 0 3 0x4000082 nanosleep syz-fuzzer 38426 399390 1133 0 3 0x4000082 thrsleep syz-fuzzer 38426 147448 1133 0 3 0x4000082 thrsleep syz-fuzzer 38426 111079 1133 0 3 0x4000082 thrsleep syz-fuzzer 38426 415110 1133 0 3 0x4000082 thrsleep syz-fuzzer 38426 515306 1133 0 3 0x4000082 kqread syz-fuzzer 38426 246192 1133 0 3 0x4000082 thrsleep syz-fuzzer 38426 145209 1133 0 3 0x4000082 thrsleep syz-fuzzer 38426 433498 1133 0 3 0x4000082 thrsleep syz-fuzzer 1133 241078 41265 0 3 0x10008a pause ksh 41265 221081 80967 0 3 0x92 select sshd 80967 413158 1 0 3 0x80 select sshd 34107 208896 79178 74 3 0x100092 bpf pflogd 79178 351025 1 0 3 0x80 netio pflogd 19094 154998 53032 73 3 0x100090 kqread syslogd 53032 423697 1 0 3 0x100082 netio syslogd 27705 241534 1 77 3 0x100090 poll dhclient 72023 342246 1 0 3 0x80 poll dhclient 20418 224168 0 0 3 0x14200 pgzero zerothread 2084 318289 0 0 3 0x14200 aiodoned aiodoned 88580 443225 0 0 3 0x14200 syncer update 59050 276605 0 0 3 0x14200 cleaner cleaner 69005 229043 0 0 3 0x14200 reaper reaper 86354 142396 0 0 3 0x14200 pgdaemon pagedaemon 51426 445057 0 0 3 0x14200 bored crynlk 62628 395282 0 0 3 0x14200 bored crypto 45872 469090 0 0 3 0x40014200 acpi0 acpi0 72994 224443 0 0 3 0x40014200 idle1 58636 214342 0 0 3 0x14200 bored softnet 21207 35476 0 0 3 0x14200 bored systqmp 33882 261516 0 0 3 0x14200 bored systq 97295 267740 0 0 3 0x40014200 bored softclock 37753 171571 0 0 3 0x40014200 idle0 68781 22395 0 0 3 0x14200 bored smr 1 339251 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks Process 31394 (syz-executor.0) thread 0xffff800020acf168 (503756) exclusive rwlock netlock r = 0 (0xffffffff824d4548) #0 witness_lock+0x52e sys/kern/subr_witness.c:1163 #1 in_ioctl+0x142 #2 ifioctl+0xb64 sys/net/if.c:2218 #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 (0xffffffff82677638) #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{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim Kern Lim devbuf 9578 6443K 9127K 78643K 16139 0 0 pcb 13 8K 8K 78643K 339 0 0 rtable 117 13K 15K 78643K 911 0 0 ifaddr 82 16K 17K 78643K 277 0 0 counters 39 33K 33K 78643K 39 0 0 ioctlops 0 0K 4K 78643K 1521 0 0 iov 0 0K 32K 78643K 239 0 0 mount 1 1K 1K 78643K 1 0 0 vnodes 1251 79K 79K 78643K 2873 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 19 0 0 VM map 11 5K 5K 78643K 15 0 0 sem 12 1K 1K 78643K 16 0 0 dirhash 12 2K 2K 78643K 12 0 0 ACPI 1808 196K 290K 78643K 12765 0 0 file desc 6 17K 25K 78643K 1054 0 0 sigio 0 0K 0K 78643K 20 0 0 proc 61 63K 95K 78643K 884 0 0 subproc 32 2K 2K 78643K 170 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 106 0 0 in_multi 25 1K 2K 78643K 181 0 0 ether_multi 1 0K 0K 78643K 18 0 0 mrt 0 0K 0K 78643K 14 0 0 ISOFS mount 1 32K 32K 78643K 1 0 0 MSDOSFS mount 1 16K 16K 78643K 1 0 0 ttys 72 318K 318K 78643K 72 0 0 exec 0 0K 1K 78643K 408 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 140 88K 98K 78643K 4707 0 0 UVM aobj 130 5K 5K 78643K 131 0 0 memdesc 1 4K 4K 78643K 1 0 0 crypto data 1 1K 1K 78643K 1 0 0 ip6_options 0 0K 2K 78643K 330 0 0 NDP 19 0K 0K 78643K 84 0 0 temp 202 3556K 3624K 78643K 46236 0 0 kqueue 0 0K 0K 78643K 3 0 0 SYN cache 2 16K 16K 78643K 2 0 0 ddb{0}> show all pools Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle arp 64 21 0 17 1 0 1 1 0 8 0 plcache 128 20 0 0 1 0 1 1 0 8 0 rtpcb 80 107 0 105 1 0 1 1 0 8 0 rtentry 112 172 0 128 2 0 2 2 0 8 0 unpcb 120 662 0 651 2 1 1 2 0 8 0 syncache 264 9 0 9 4 4 0 1 0 8 0 tcpqe 32 39 0 39 4 4 0 1 0 8 0 tcpcb 544 485 0 479 4 3 1 2 0 8 0 inpcb 280 2079 0 2069 7 5 2 4 0 8 1 rttmr 72 5 0 5 2 2 0 1 0 8 0 nd6 48 24 0 22 1 0 1 1 0 8 0 pkpcb 40 7 0 7 2 2 0 1 0 8 0 ppxss 1128 25 0 25 5 5 0 1 0 8 0 pffrag 232 33 0 33 2 1 1 1 0 482 1 pffrnode 88 33 0 33 2 1 1 1 0 8 1 pffrent 40 841 0 841 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 24 117 0 51 1 0 1 1 0 8 0 pfstkey 112 117 0 51 3 0 3 3 0 8 0 pfstate 328 117 0 50 7 0 7 7 0 8 0 pfrule 1360 21 0 16 2 1 1 2 0 8 0 art_heap8 4096 6 0 2 5 1 4 5 0 8 0 art_heap4 256 768 0 561 25 11 14 17 0 8 0 art_table 32 774 0 563 3 1 2 3 0 8 0 art_node 16 171 0 130 1 0 1 1 0 8 0 sysvmsgpl 40 22 0 15 1 0 1 1 0 8 0 semupl 112 4 0 4 1 1 0 1 0 8 0 semapl 112 12 0 2 1 0 1 1 0 8 0 shmpl 112 129 0 1 4 0 4 4 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino1pl 128 3001 0 1588 46 0 46 46 0 8 0 ffsino 272 3001 0 1588 95 0 95 95 0 8 0 nchpl 144 4984 0 3374 61 0 61 61 0 8 0 uvmvnodes 72 4440 0 0 81 0 81 81 0 8 0 vnodes 208 4440 0 0 234 0 234 234 0 8 0 namei 1024 18735 0 18735 2 1 1 1 0 8 1 percpumem 16 30 0 0 1 0 1 1 0 8 0 vcpupl 1984 9 0 0 2 0 2 2 0 8 0 vmpool 552 13 0 4 2 1 1 1 0 8 0 scsiplug 64 2 0 2 1 1 0 1 0 8 0 scxspl 192 14990 0 14990 13 12 1 7 0 8 1 plimitpl 152 103 0 95 1 0 1 1 0 8 0 sigapl 432 1229 0 1213 3 1 2 3 0 8 0 futexpl 56 26324 0 26323 1 0 1 1 0 8 0 knotepl 112 339 0 320 3 2 1 3 0 8 0 kqueuepl 104 238 0 236 1 0 1 1 0 8 0 pipepl 112 818 0 797 2 1 1 2 0 8 0 fdescpl 488 1230 0 1213 3 0 3 3 0 8 0 filepl 152 11830 0 11722 12 7 5 9 0 8 0 lockfpl 104 434 0 433 1 0 1 1 0 8 0 lockfspl 48 128 0 127 1 0 1 1 0 8 0 sessionpl 112 27 0 16 1 0 1 1 0 8 0 pgrppl 48 44 0 33 1 0 1 1 0 8 0 ucredpl 96 1622 0 1613 1 0 1 1 0 8 0 zombiepl 144 1213 0 1213 1 0 1 1 0 8 1 processpl 896 1246 0 1213 4 0 4 4 0 8 0 procpl 632 3526 0 3481 5 0 5 5 0 8 0 srpgc 64 16 0 16 5 5 0 1 0 8 0 sosppl 128 37 0 37 5 5 0 1 0 8 0 sockpl 384 2891 0 2868 10 6 4 6 0 8 1 mcl64k 65536 272 0 0 34 0 34 34 0 8 0 mcl16k 16384 7 0 0 1 0 1 1 0 8 0 mcl12k 12288 17 0 0 2 0 2 2 0 8 0 mcl9k 9216 5 0 0 1 0 1 1 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 4 0 0 1 0 1 1 0 8 0 mcl2k 2048 178 0 0 22 1 21 22 0 8 2 mtagpl 80 35 0 0 1 0 1 1 0 8 0 mbufpl 256 433 0 0 23 0 23 23 0 8 0 bufpl 256 9385 0 2327 442 0 442 442 0 8 0 anonpl 16 165267 0 143385 127 24 103 103 0 124 7 amapchunkpl 152 9162 0 8759 29 11 18 23 0 158 1 amappl16 192 6308 0 5161 90 21 69 70 0 8 11 amappl15 184 166 0 165 3 2 1 1 0 8 0 amappl14 176 202 0 197 1 0 1 1 0 8 0 amappl13 168 241 0 239 1 0 1 1 0 8 0 amappl12 160 105 0 104 2 1 1 1 0 8 0 amappl11 152 132 0 117 1 0 1 1 0 8 0 amappl10 144 210 0 203 1 0 1 1 0 8 0 amappl9 136 715 0 712 1 0 1 1 0 8 0 amappl8 128 278 0 239 2 0 2 2 0 8 0 amappl7 120 261 0 252 1 0 1 1 0 8 0 amappl6 112 132 0 117 1 0 1 1 0 8 0 amappl5 104 321 0 306 1 0 1 1 0 8 0 amappl4 96 1646 0 1607 1 0 1 1 0 8 0 amappl3 88 386 0 379 1 0 1 1 0 8 0 amappl2 80 8597 0 8518 3 1 2 3 0 8 0 amappl1 72 37963 0 37516 25 15 10 20 0 8 0 amappl 80 3921 0 3866 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 64 130 0 1 3 0 3 3 0 8 0 uaddrrnd 24 1243 0 1213 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 1243 0 1213 1 0 1 1 0 8 0 vmmpekpl 168 14367 0 14331 3 1 2 2 0 8 0 vmmpepl 168 166164 0 163738 187 43 144 146 0 357 37 vmsppl 368 1229 0 1213 2 0 2 2 0 8 0 pdppl 4096 2493 0 2443 7 0 7 7 0 8 0 pvpl 32 465445 0 444798 245 44 201 225 0 265 10 pmappl 232 1242 0 1217 4 2 2 2 0 8 0 extentpl 40 41 0 26 1 0 1 1 0 8 0 phpool 112 675 0 20 19 0 19 19 0 8 0