login: panic: ip6_getpcbopt: unexpected option Stopped at db_enter+0x25: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND *488899 51382 0 0 0x4000000 0 syz-executor db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438 panic(ffffffff834eb32a) at panic+0x1cf sys/kern/subr_prf.c:198 ip6_getpcbopt(ffff80000165db40,33,fffffb006e7a5100) at ip6_getpcbopt+0x3e3 ip6_ctloutput(0,ffff8000015ff378,29,33,fffffb006e7a5100) at ip6_ctloutput+0xfa9 sys/netinet6/ip6_output.c:1487 sogetopt(ffff8000015ff378,29,33,fffffb006e7a5100) at sogetopt+0x128 sys/kern/uipc_socket.c:2074 sys_getsockopt(ffff80003c8ea020,ffff8000314a7940,ffff8000314a7890) at sys_getsockopt+0x1eb sys/kern/uipc_syscalls.c:1263 syscall(ffff8000314a7940) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff8000314a7940) at syscall+0x962 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x33fb437a430, 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> ddb> set $lines = 0 ddb> set $maxwidth = 0 ddb> show panic *cpu0: ip6_getpcbopt: unexpected option ddb> trace db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438 panic(ffffffff834eb32a) at panic+0x1cf sys/kern/subr_prf.c:198 ip6_getpcbopt(ffff80000165db40,33,fffffb006e7a5100) at ip6_getpcbopt+0x3e3 ip6_ctloutput(0,ffff8000015ff378,29,33,fffffb006e7a5100) at ip6_ctloutput+0xfa9 sys/netinet6/ip6_output.c:1487 sogetopt(ffff8000015ff378,29,33,fffffb006e7a5100) at sogetopt+0x128 sys/kern/uipc_socket.c:2074 sys_getsockopt(ffff80003c8ea020,ffff8000314a7940,ffff8000314a7890) at sys_getsockopt+0x1eb sys/kern/uipc_syscalls.c:1263 syscall(ffff8000314a7940) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff8000314a7940) at syscall+0x962 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x33fb437a430, count: -8 ddb> show registers rdi 0 rsi 0x1 rbp 0xffff8000314a75c0 rbx 0xfffffb006b675150 rdx 0xffff8000015b3f00 rcx 0 rax 0xffff80003c8ea020 r8 0x101010101010101 r9 0x8080808080808080 r10 0x2cdd698e6a21defa r11 0x75164fd22cd518db r12 0 r13 0xffff8000015ff378 r14 0 r15 0x1 rip 0xffffffff829fcc95 db_enter+0x25 cs 0x8 rflags 0x246 rsp 0xffff8000314a75b0 ss 0x10 db_enter+0x25: addq $0x8,%rsp ddb> show proc PROC (syz-executor) tid=488899 pid=51382 tcnt=2 stat=onproc flags process=0 proc=4000000 runpri=32, usrpri=50, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff80003c8ea550,0xffffffff83a76958 process=0xffff807fffff8018 user=0xffff8000314a2000, vmspace=0xfffffb006be10a20 estcpu=36, cpticks=0, pctcpu=0.0, user=0, sys=0, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 51382 410640 69095 0 2 0 syz-executor *51382 488899 69095 0 7 0x4000000 syz-executor 1181 457130 40087 0 2 0 syz-executor 1181 268096 40087 0 3 0x4000080 kqsel syz-executor 1181 266185 40087 0 2 0x4000000 syz-executor 98628 409023 41273 0 2 0 syz-executor 98628 383588 41273 0 3 0x4000080 fsleep syz-executor 72251 497565 55015 0 2 0 syz-executor 72251 169498 55015 0 2 0x4000000 syz-executor 51532 247034 52868 0 3 0x82 piperd syz-executor 49712 51374 1 0 3 0x100083 ttyin getty 41273 522614 52868 0 3 0x82 nanoslp syz-executor 40087 419835 52868 0 3 0x82 nanoslp syz-executor 57125 397175 52868 0 2 0x10000002 syz-executor 36464 117031 52868 0 3 0x82 piperd syz-executor 20515 22506 52868 0 3 0x82 piperd syz-executor 55015 241890 52868 0 3 0x82 nanoslp syz-executor 69095 236020 52868 0 3 0x82 nanoslp syz-executor 52868 206307 1 0 2 0x2 syz-executor 30583 73618 1 0 3 0x1000008a kqread sshd 33700 87437 22343 73 3 0x1100090 kqread syslogd 22343 331765 1 0 3 0x100082 sbwait syslogd 19748 201616 1 0 3 0x100080 kqread resolvd 52059 282900 72504 77 3 0x100092 kqread dhcpleased 87153 214293 72504 77 3 0x100092 kqread dhcpleased 72504 133430 1 0 3 0x80 kqread dhcpleased 13884 320070 0 0 3 0x14200 bored smr 27768 36400 0 0 2 0x14200 zerothread 94539 333825 0 0 3 0x14200 aiodoned aiodoned 2097 366579 0 0 3 0x14200 syncer update 19605 182522 0 0 3 0x14200 cleaner cleaner 96961 251901 0 0 3 0x14200 reaper reaper 23290 8609 0 0 3 0x14200 pgdaemon pagedaemon 2646 320802 0 0 3 0x14200 bored viomb 53369 185214 0 0 3 0x40014200 acpi0 acpi0 24081 165396 0 0 3 0x14200 bored softnet0 29380 124654 0 0 3 0x14200 smrbar systqmp 90054 161841 0 0 3 0x14200 bored systq 3079 195805 0 0 3 0x40014200 tmoslp softclock 595 409294 0 0 3 0x40014200 idle0 1 368079 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb> show all locks No such command ddb> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 11049 12204K 12458K 166960K 12660 0 pcb 17 12K 12K 166960K 74 0 rtable 213 7K 8K 166960K 594 0 pf 32 13K 17K 166960K 126 0 ifaddr 36 6K 7K 166960K 82 0 ifgroup 50 2K 2K 166960K 120 0 sysctl 4 1K 9K 166960K 13 0 counters 33 17K 18K 166960K 55 0 ioctlops 0 0K 4K 166960K 106 0 iov 0 0K 12K 166960K 14 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1298 82K 82K 166960K 1695 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 9K 166960K 6 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 0K 166960K 28 0 dirhash 12 2K 2K 166960K 15 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 14 49K 97K 166960K 657 0 sigio 0 0K 0K 166960K 10 0 proc 60 59K 124K 166960K 677 0 subproc 72 4K 4K 166960K 117 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 51 0 in_multi 77 5K 7K 166960K 181 0 ether_multi 1 0K 0K 166960K 4 0 mrt 0 0K 0K 166960K 13 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 61 281K 281K 166960K 61 0 exec 0 0K 1K 166960K 480 0 fusefs mount 1 32K 32K 166960K 1 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 176 137K 168K 166960K 6928 0 UVM aobj 9 2K 2K 166960K 12 0 pinsyscall 30 60K 96K 166960K 1918 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 1 0K 0K 166960K 12 0 NDP 13 0K 2K 166960K 55 0 temp 60 9115K 9119K 166960K 17244 0 kqueue 12 18K 28K 166960K 88 0 SYN cache 2 16K 16K 166960K 2 0 ddb> show all pools Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle rtpcb 120 61 0 58 1 0 1 1 0 8 0 rtentry 136 178 0 88 4 0 4 4 0 8 0 unpcb 144 221 0 208 1 0 1 1 0 8 0 syncache 336 8 0 8 1 0 1 1 0 8 1 tcpqe 32 1 0 1 1 0 1 1 0 8 1 tcpcb 736 71 0 64 1 0 1 1 0 8 0 arp 96 28 0 14 1 0 1 1 0 8 0 ipq 40 2 0 1 1 0 1 1 0 8 0 ipqe 40 4 0 3 1 0 1 1 0 8 0 inpcb 328 280 0 268 2 0 2 2 0 8 0 ip6q 72 2 0 0 1 0 1 1 0 8 0 ip6af 40 2 0 0 1 0 1 1 0 8 0 nd6 112 41 0 22 1 0 1 1 0 8 0 pkpcb 40 1 0 1 1 0 1 1 0 8 1 kcovpl 48 13 0 5 1 0 1 1 0 8 0 mppekey 1024 2 0 2 1 0 1 1 0 8 1 ppxss 1072 9 0 9 1 0 1 1 0 8 1 pppxif 1416 3 0 3 1 0 1 1 0 8 1 pfstscr 40 7 0 0 1 0 1 1 0 8 0 pfrktable 1344 18 0 18 1 0 1 1 0 8 1 pfsrclim 320 4 0 4 1 0 1 1 0 8 1 pfanchor 1288 7 0 7 1 0 1 1 0 8 1 pftag 88 1 0 1 1 0 1 1 0 8 1 pfstitem 24 7 0 2 1 0 1 1 0 8 0 pfstkey 128 7 0 3 1 0 1 1 0 8 0 pfstate 384 4 0 0 1 0 1 1 0 8 0 pfrule 1360 7 0 7 1 0 1 1 0 8 1 rttmr 136 2 0 2 1 0 1 1 0 8 1 art_heap8 4096 2 0 0 2 0 2 2 0 8 0 art_heap4 256 707 0 337 29 0 29 29 0 8 5 art_table 40 709 0 337 5 0 5 5 0 8 0 art_node 32 178 0 95 1 0 1 1 0 8 0 sysvmsgpl 40 6 0 2 1 0 1 1 0 8 0 semapl 72 26 0 16 1 0 1 1 0 8 0 shmpl 112 9 0 3 1 0 1 1 0 8 0 dirhash 1024 19 0 2 3 0 3 3 0 8 0 dino2pl 256 2270 0 801 93 0 93 93 0 8 0 ffsino 256 2270 0 801 93 0 93 93 0 8 0 nchpl 144 3072 0 1365 64 0 64 64 0 8 0 rtmask 32 2 0 2 1 0 1 1 0 8 1 vnodes 216 2570 0 0 143 0 143 143 0 8 0 namei 1024 9001 0 9001 2 0 2 2 0 8 2 pfiaddrpl 120 6 0 6 1 0 1 1 0 8 1 kstatmem 264 57 0 34 2 0 2 2 0 8 0 scxspl 216 10638 0 10638 8 0 8 8 1 8 8 plimitpl 152 59 0 45 1 0 1 1 0 8 0 sigapl 424 949 0 911 6 0 6 6 0 8 1 knotepl 120 19719 0 19452 16 6 10 16 0 8 1 kqueuepl 184 104 0 95 1 0 1 1 0 8 0 pipepl 304 143 0 116 3 0 3 3 0 8 0 fdescpl 448 936 0 913 5 0 5 5 0 8 1 filepl 120 3185 0 2979 8 0 8 8 0 8 0 lockfpl 104 141 0 137 1 0 1 1 0 8 0 lockfspl 48 68 0 64 1 0 1 1 0 8 0 sessionpl 144 36 0 28 1 0 1 1 0 8 0 pgrppl 48 49 0 33 1 0 1 1 0 8 0 ucredpl 104 370 0 359 1 0 1 1 0 8 0 zombiepl 144 913 0 911 1 0 1 1 0 8 0 processpl 1152 949 0 911 4 0 4 4 0 8 0 procpl 664 1463 0 1420 5 0 5 5 0 8 1 sosppl 176 7 0 7 1 0 1 1 0 8 1 sockpl 552 570 0 542 3 0 3 3 0 8 0 mcl64k 65536 87 0 86 1 0 1 1 0 8 0 mcl16k 16384 34 0 34 1 0 1 1 0 8 1 mcl12k 12288 21 0 21 1 0 1 1 0 8 1 mcl9k128 9344 4 0 4 1 0 1 1 0 8 1 mcl8k 8192 25 0 25 1 0 1 1 0 8 1 mcl4k 4096 3160 0 3107 14 0 14 14 0 8 7 mcl2k 2048 416 0 416 2 0 2 2 0 8 2 mtagpl 96 16 0 11 1 0 1 1 0 8 0 mbufpl 256 9264 0 9110 15 0 15 15 0 8 4 bufpl 272 3412 0 104 221 0 221 221 0 8 0 anonpl 24 120908 0 118436 32 0 32 32 0 88 8 amapchunkpl 152 21300 0 20962 26 0 26 26 0 158 10 amappl16 200 1644 0 1624 4 0 4 4 0 8 1 amappl15 192 3 0 3 1 0 1 1 0 8 1 amappl14 184 472 0 472 1 0 1 1 0 8 1 amappl13 176 133 0 125 1 0 1 1 0 8 0 amappl12 168 1197 0 1175 2 0 2 2 0 8 0 amappl11 160 2 0 2 1 0 1 1 0 8 1 amappl10 152 73 0 63 1 0 1 1 0 8 0 amappl9 144 270 0 270 1 0 1 1 0 8 1 amappl8 136 114 0 113 1 0 1 1 0 8 0 amappl7 128 159 0 149 1 0 1 1 0 8 0 amappl6 120 197 0 197 1 0 1 1 0 8 1 amappl5 112 107 0 102 1 0 1 1 0 8 0 amappl4 104 300 0 284 1 0 1 1 0 8 0 amappl3 96 4398 0 4319 4 0 4 4 0 8 1 amappl2 88 594 0 551 2 0 2 2 0 8 0 amappl1 80 13666 0 13292 15 0 15 15 0 8 4 amappl 88 6090 0 5971 5 0 5 5 0 92 0 uvmvnodes 80 102 0 0 3 0 3 3 0 8 0 dma32768 32768 33 0 33 1 0 1 1 0 8 1 dma4096 4096 1 0 1 1 0 1 1 0 8 1 dma1024 1024 1 0 0 1 0 1 1 0 8 0 dma256 256 6 0 6 1 0 1 1 0 8 1 dma128 128 253 0 253 1 0 1 1 0 8 1 dma64 64 6 0 6 1 0 1 1 0 8 1 dma32 32 7 0 7 1 0 1 1 0 8 1 dma16 16 19 0 18 1 0 1 1 0 8 0 aobjpl 72 11 0 3 1 0 1 1 0 8 0 uaddrrnd 24 936 0 913 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 936 0 913 1 0 1 1 0 8 0 vmmpekpl 168 8875 0 8842 2 0 2 2 0 8 0 vmmpepl 168 66292 0 64991 92 0 92 92 0 357 28 vmsppl 368 935 0 913 4 0 4 4 0 8 1 rwobjpl 40 19908 0 19132 12 0 12 12 0 8 1 pdppl 4096 1878 0 1826 102 40 62 82 0 8 10 pvpl 32 387784 0 380823 92 0 92 92 0 265 12 pmappl 216 935 0 913 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 596 0 40 16 0 16 16 0 8 0 ddb> machine ddbcpu 0 No such command ddb> trace db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438 panic(ffffffff834eb32a) at panic+0x1cf sys/kern/subr_prf.c:198 ip6_getpcbopt(ffff80000165db40,33,fffffb006e7a5100) at ip6_getpcbopt+0x3e3 ip6_ctloutput(0,ffff8000015ff378,29,33,fffffb006e7a5100) at ip6_ctloutput+0xfa9 sys/netinet6/ip6_output.c:1487 sogetopt(ffff8000015ff378,29,33,fffffb006e7a5100) at sogetopt+0x128 sys/kern/uipc_socket.c:2074 sys_getsockopt(ffff80003c8ea020,ffff8000314a7940,ffff8000314a7890) at sys_getsockopt+0x1eb sys/kern/uipc_syscalls.c:1263 syscall(ffff8000314a7940) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff8000314a7940) at syscall+0x962 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x33fb437a430, count: -8 ddb> machine ddbcpu 1 No such command ddb> trace db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438 panic(ffffffff834eb32a) at panic+0x1cf sys/kern/subr_prf.c:198 ip6_getpcbopt(ffff80000165db40,33,fffffb006e7a5100) at ip6_getpcbopt+0x3e3 ip6_ctloutput(0,ffff8000015ff378,29,33,fffffb006e7a5100) at ip6_ctloutput+0xfa9 sys/netinet6/ip6_output.c:1487 sogetopt(ffff8000015ff378,29,33,fffffb006e7a5100) at sogetopt+0x128 sys/kern/uipc_socket.c:2074 sys_getsockopt(ffff80003c8ea020,ffff8000314a7940,ffff8000314a7890) at sys_getsockopt+0x1eb sys/kern/uipc_syscalls.c:1263 syscall(ffff8000314a7940) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff8000314a7940) at syscall+0x962 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x33fb437a430, count: -8 ddb>