kernel: protection fault trap, code=0 Stopped at in6_addmulti+0xf4: movzbl 0x1(%rax),%r15d ddb{0}> ddb{0}> set $lines = 0 ddb{0}> set $maxwidth = 0 ddb{0}> show panic the kernel did not panic ddb{0}> trace in6_addmulti(ffff8000329975b8,ffff8000011c4800,ffff800032997644) at in6_addmulti+0xf4 sys/netinet6/in6.c:1047 in6_joingroup(ffff8000011c4800,ffff8000329975b8,ffff800032997644) at in6_joingroup+0x6c in6_update_ifa(ffff8000011c4800,ffff8000329976c0,0) at in6_update_ifa+0x190d in6_ifattach_linklocal(ffff8000011c4800,0) at in6_ifattach_linklocal+0x331 sys/netinet6/in6_ifattach.c:281 in6_ifattach(ffff8000011c4800) at in6_ifattach+0x2b4 sys/netinet6/in6_ifattach.c:405 ifnewlladdr(ffff8000011c4800) at ifnewlladdr+0x236 sys/net/if.c:3366 ifioctl(ffff800001238fe8,8020691f,ffff800032997910,ffff8000ffff76e8) at ifioctl+0x2ca0 sys/net/if.c:2357 sys_ioctl(ffff8000ffff76e8,ffff800032997af0,ffff800032997a40) at sys_ioctl+0x67c syscall(ffff800032997af0) at syscall+0xbb6 mi_syscall sys/sys/syscall_mi.h:179 [inline] syscall(ffff800032997af0) at syscall+0xbb6 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x4850f30bef0, count: -10 ddb{0}> show registers rdi 0xffff80002ed74000 rsi 0x3298b acpi_pdirpa+0x1e7fc rbp 0xffff800032997430 rbx 0xffff8000011c4800 rdx 0xffff80002ed74000 rcx 0x3298a acpi_pdirpa+0x1e7fb rax 0xdeaf0036deaf4152 r8 0 r9 0xfffffd806bebd160 r10 0xe06c3b5961548c55 r11 0x8a92f517ea36a4a1 r12 0xffff800001147c00 r13 0xffff8000329975b8 r14 0xffff800032997644 r15 0x3 rip 0xffffffff819f3904 in6_addmulti+0xf4 cs 0x8 rflags 0x10286 __ALIGN_SIZE+0xf286 rsp 0xffff8000329972b0 ss 0 in6_addmulti+0xf4: movzbl 0x1(%rax),%r15d ddb{0}> show proc PROC (syz-executor) tid=244020 pid=36230 tcnt=3 stat=onproc flags process=0 proc=4000000 runpri=32, usrpri=84, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff8000329af990,0xffff8000ffff67c8 process=0xffff8000329c4490 user=0xffff800032992000, vmspace=0xfffffd806ce751d0 estcpu=34, cpticks=1, pctcpu=0.0, user=0, sys=1, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 35787 333435 8890 0 2 0 syz-executor 15929 68836 16238 0 7 0 syz-executor 47355 611 9028 0 2 0 syz-executor 47355 215218 9028 0 3 0x4000080 fsleep syz-executor 90668 266601 45416 0 2 0 syz-executor 90668 303077 45416 0 3 0x4000080 kqread syz-executor 36230 340796 58794 0 2 0 syz-executor 36230 469854 58794 0 3 0x4000000 smrbar syz-executor *36230 244020 58794 0 7 0x4000000 syz-executor 98748 260054 20732 0 2 0 syz-executor 98748 217842 20732 0 3 0x4000080 msgwait syz-executor 98748 431649 20732 0 3 0x4000080 fsleep syz-executor 58794 59918 43495 0 2 0x482 syz-executor 9028 439758 43495 0 2 0x482 syz-executor 45416 353960 43495 0 2 0x2 syz-executor 6990 347325 43495 0 3 0x82 wait syz-executor 20732 427573 43495 0 2 0x482 syz-executor 8890 337937 43495 0 2 0x2 syz-executor 93612 331811 43495 0 2 0x482 syz-executor 16238 381198 43495 0 2 0x482 syz-executor 25235 86061 0 0 3 0x14280 nfsidl nfsio 26656 426307 0 0 3 0x14280 nfsidl nfsio 3140 120203 0 0 3 0x14280 nfsidl nfsio 29707 62712 0 0 3 0x14280 nfsidl nfsio 2319 182849 0 0 3 0x14280 nfsidl nfsio 34991 240065 0 0 3 0x14280 nfsidl nfsio 35456 294477 0 0 3 0x14280 nfsidl nfsio 76543 478332 0 0 3 0x14280 nfsidl nfsio 14431 368692 0 0 3 0x14280 nfsidl nfsio 98045 369999 0 0 3 0x14280 nfsidl nfsio 20246 358736 0 0 3 0x14280 nfsidl nfsio 76285 127054 0 0 3 0x14280 nfsidl nfsio 8247 273334 0 0 3 0x14280 nfsidl nfsio 21138 126283 0 0 3 0x14280 nfsidl nfsio 75375 480546 0 0 3 0x14280 nfsidl nfsio 47723 203735 0 0 3 0x14280 nfsidl nfsio 68921 322309 0 0 3 0x14280 nfsidl nfsio 84740 189663 0 0 3 0x14280 nfsidl nfsio 55219 9472 0 0 3 0x14280 nfsidl nfsio 2798 434828 0 0 3 0x14280 nfsidl nfsio 87962 118339 1 0 3 0x100083 ttyopn getty 41311 150416 0 0 3 0x14200 bored sosplice 43495 325026 20110 0 3 0x82 kqread syz-executor 20110 155808 39390 0 3 0x10008a sigsusp ksh 39390 516311 93694 0 3 0x98 kqread sshd-session 93694 462502 82496 0 3 0x92 kqread sshd-session 82496 435764 1 0 3 0x88 kqread sshd 34668 502211 14673 74 3 0x1100092 bpf pflogd 14673 100458 1 0 3 0x80 sbwait pflogd 41688 481637 76355 73 2 0x1100010 syslogd 76355 151834 1 0 3 0x100082 sbwait syslogd 82716 31338 1 0 3 0x100080 kqread resolvd 83015 339056 86455 77 3 0x100092 kqread dhcpleased 38794 201456 86455 77 3 0x100092 kqread dhcpleased 86455 195185 1 0 3 0x80 kqread dhcpleased 35233 449838 0 0 3 0x14200 bored smr 67641 286247 0 0 2 0x14200 zerothread 55467 315264 0 0 3 0x14200 aiodoned aiodoned 64280 179805 0 0 3 0x14200 syncer update 44837 72403 0 0 3 0x14200 cleaner cleaner 10214 395815 0 0 2 0x14200 reaper 19641 93279 0 0 3 0x14200 pgdaemon pagedaemon 56917 107283 0 0 3 0x14200 bored viomb 76276 404474 0 0 3 0x40014200 acpi0 acpi0 46677 447512 0 0 3 0x40014200 idle1 5158 349913 0 0 3 0x14200 bored softnet3 44880 13985 0 0 3 0x14200 bored softnet2 85753 252358 0 0 3 0x14200 bored softnet1 66217 55827 0 0 2 0x14200 softnet0 86975 311347 0 0 2 0x14200 systqmp 8476 131790 0 0 3 0x14200 bored systq 72364 3423 0 0 3 0x14200 tmoslp softclockmp 41083 76858 0 0 3 0x40014200 tmoslp softclock 14516 518822 0 0 3 0x40014200 idle0 1 310040 0 0 3 0x80082 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks Process 36230 (syz-executor) thread 0xffff8000ffff62a8 (469854) Process 36230 (syz-executor) thread 0xffff8000ffff76e8 (244020) Process 41688 (syslogd) thread 0xffff8000ffffd450 (481637) Process 10214 (reaper) thread 0xffff800029fd8cb0 (395815) ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10208 10191K 10517K 166960K 12548 0 pcb 21 14K 16K 166960K 386 0 rtable 208 6K 8K 166960K 1141 0 pf 41 19K 27K 166960K 143 0 ifaddr 42 7K 8K 166960K 155 0 ifgroup 55 2K 2K 166960K 178 0 sysctl 3 0K 0K 166960K 5 0 counters 64 36K 36K 166960K 124 0 ioctlops 0 0K 4K 166960K 1596 0 iov 0 0K 16K 166960K 101 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1459 92K 92K 166960K 2520 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 9K 166960K 15 0 VM map 2 1K 1K 166960K 2 0 sem 12 1K 1K 166960K 168 0 dirhash 12 2K 2K 166960K 42 0 ACPI 1690 195K 286K 166960K 12418 0 file desc 16 57K 93K 166960K 1427 0 sigio 0 0K 0K 166960K 93 0 proc 72 91K 140K 166960K 1243 0 subproc 104 6K 6K 166960K 391 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 281 0 in_multi 90 6K 7K 166960K 409 0 ether_multi 1 0K 0K 166960K 5 0 mrt 1 0K 0K 166960K 5 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 85 387K 387K 166960K 85 0 exec 0 0K 1K 166960K 1012 0 pfkey data 0 0K 0K 166960K 1 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 244 91K 93K 166960K 13707 0 UVM aobj 101 3K 3K 166960K 102 0 pinsyscall 41 82K 105K 166960K 3092 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 62 0 NDP 12 0K 2K 166960K 110 0 temp 71 6822K 7458K 166960K 39719 0 kqueue 14 22K 28K 166960K 189 0 SYN cache 2 16K 16K 166960K 2 0 ddb{0}> show all pools Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle plcache 128 24 0 0 1 0 1 1 0 8 0 rtpcb 120 208 0 204 3 2 1 3 0 8 0 rtentry 112 397 0 303 5 2 3 4 0 8 0 unpcb 144 1036 0 1013 10 7 3 6 0 8 2 syncache 336 5 0 5 3 3 0 1 0 8 0 tcpcb 808 438 0 433 18 10 8 8 0 8 7 arp 120 66 0 49 1 0 1 1 0 8 0 inpcb 336 1671 0 1655 30 21 9 12 0 8 7 nd6 136 104 0 82 1 0 1 1 0 8 0 pkpcb 40 7 0 7 3 3 0 1 0 8 0 kcovpl 48 30 0 22 1 0 1 1 0 8 0 ppxss 1168 2 0 2 2 2 0 1 0 8 0 pfstscr 40 3 0 2 1 0 1 1 0 8 0 pffrag 232 9 0 7 1 0 1 1 0 482 0 pffrnode 88 9 0 7 1 0 1 1 0 8 0 pffrent 40 64 0 62 1 0 1 1 0 8 0 pfosfp 40 1428 0 1005 5 0 5 5 0 8 0 pfosfpen 112 1428 0 714 21 0 21 21 0 8 0 pfrktable 1344 1 0 0 1 0 1 1 0 8 0 pfanchor 1288 2 0 0 1 0 1 1 0 8 0 pftag 88 2 0 0 1 0 1 1 0 8 0 pfstitem 24 133 0 83 1 0 1 1 0 8 0 pfstkey 128 137 0 87 3 0 3 3 0 8 0 pfstate 376 133 0 86 7 1 6 7 0 8 0 pfrule 1344 36 0 24 2 0 2 2 0 8 1 art_heap8 4096 2 0 0 2 0 2 2 0 8 0 art_heap4 256 1688 0 1231 34 5 29 30 0 8 0 art_table 32 1690 0 1231 4 0 4 4 0 8 0 art_node 16 395 0 310 1 0 1 1 0 8 0 sysvmsgpl 40 44 0 38 1 0 1 1 0 8 0 semapl 112 166 0 156 1 0 1 1 0 8 0 shmpl 112 99 0 1 3 0 3 3 0 8 0 dirhash 1024 38 0 21 3 0 3 3 0 8 0 dino2pl 256 3426 0 1885 97 0 97 97 0 8 0 ffsino 272 3426 0 1885 104 0 104 104 0 8 0 nchpl 144 5022 0 3306 64 0 64 64 0 8 0 uvmvnodes 80 4340 0 0 89 0 89 89 0 8 0 vnodes 216 4340 0 0 242 0 242 242 0 8 0 namei 1024 19030 0 19030 4 3 1 2 0 8 1 percpumem 16 76 0 30 1 0 1 1 0 8 0 kstatmem 264 84 0 60 2 0 2 2 0 8 0 acpiwqpl 32 3 0 3 1 0 1 1 1 8 1 scsiplug 72 4 0 4 4 3 1 1 0 8 1 scxspl 216 26022 0 26022 12 11 1 8 1 8 1 plimitpl 152 291 0 273 1 0 1 1 0 8 0 sigapl 424 1709 0 1638 11 2 9 9 0 8 0 futexpl 64 15710 0 15708 4 3 1 1 0 8 0 knotepl 120 630 0 0 18 0 18 18 0 8 0 kqueuepl 216 341 0 329 3 2 1 3 0 8 0 pipepl 320 376 0 349 11 8 3 8 0 8 0 fdescpl 496 1669 0 1639 6 1 5 5 0 8 0 filepl 152 10284 0 10025 29 14 15 16 0 8 3 lockfpl 104 499 0 497 2 0 2 2 0 8 1 lockfspl 48 164 0 162 1 0 1 1 0 8 0 sessionpl 144 47 0 38 1 0 1 1 0 8 0 pgrppl 48 93 0 76 1 0 1 1 0 8 0 ucredpl 104 1730 0 1716 1 0 1 1 0 8 0 zombiepl 144 1640 0 1638 1 0 1 1 0 8 0 processpl 1160 1709 0 1638 7 1 6 6 0 8 0 procpl 648 3311 0 3234 9 1 8 8 0 8 0 sosppl 168 5 0 5 3 3 0 1 0 8 0 sockpl 664 2933 0 2890 42 30 12 15 0 8 8 mcl64k 65536 6 0 0 1 0 1 1 0 8 0 mcl16k 16384 1 0 0 1 0 1 1 0 8 0 mcl9k 9216 1 0 0 1 0 1 1 0 8 0 mcl8k 8192 4 0 0 1 0 1 1 0 8 0 mcl4k 4096 4 0 0 1 0 1 1 0 8 0 mcl2k 2048 235 0 0 30 0 30 30 0 8 0 mtagpl 96 18 0 0 1 0 1 1 0 8 0 mbufpl 256 1789 0 0 109 0 109 109 0 8 0 bufpl 280 8209 0 1949 448 0 448 448 0 8 0 anonpl 24 325361 0 316478 103 49 54 78 0 185 0 amapchunkpl 152 45570 0 44772 51 19 32 40 0 158 0 amappl16 200 7674 0 7643 29 25 4 19 0 8 1 amappl15 192 15 0 15 1 1 0 1 0 8 0 amappl14 184 169 0 157 1 0 1 1 0 8 0 amappl13 176 59 0 59 2 2 0 1 0 8 0 amappl12 168 2700 0 2669 3 1 2 2 0 8 0 amappl11 160 67 0 52 1 0 1 1 0 8 0 amappl10 152 12 0 12 1 1 0 1 0 8 0 amappl9 144 178 0 178 1 1 0 1 0 8 0 amappl8 136 26 0 22 1 0 1 1 0 8 0 amappl7 128 186 0 174 1 0 1 1 0 8 0 amappl6 120 386 0 385 1 0 1 1 0 8 0 amappl5 112 224 0 211 1 0 1 1 0 8 0 amappl4 104 381 0 361 1 0 1 1 0 8 0 amappl3 96 8917 0 8800 5 1 4 4 0 8 0 amappl2 88 1015 0 946 2 0 2 2 0 8 0 amappl1 80 13129 0 12555 14 0 14 14 0 8 0 amappl 88 13060 0 12880 5 0 5 5 0 92 0 dma65536 65536 2 0 2 1 1 0 1 0 8 0 dma4096 4096 2 0 2 2 2 0 1 0 8 0 dma1024 1024 1 0 0 1 0 1 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 7 0 7 2 2 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 72 101 0 1 2 0 2 2 0 8 0 uaddrrnd 24 1669 0 1638 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 1669 0 1638 1 0 1 1 0 8 0 vmmpekpl 168 14668 0 14619 4 1 3 3 0 8 0 vmmpepl 168 109834 0 107922 109 23 86 99 0 357 1 vmsppl 440 1668 0 1637 6 2 4 5 0 8 0 rwobjpl 56 37531 0 32144 80 3 77 77 0 8 0 pdppl 4096 3345 0 3274 137 66 71 85 0 8 0 pvpl 32 44853 0 0 364 2 362 362 0 265 0 pmappl 248 1668 0 1637 3 0 3 3 0 8 0 extentpl 40 56 0 38 1 0 1 1 0 8 0 phpool 112 582 0 114 14 0 14 14 0 8 0 ddb{0}> machine ddbcpu 0 Invalid cpu 0 ddb{0}> trace in6_addmulti(ffff8000329975b8,ffff8000011c4800,ffff800032997644) at in6_addmulti+0xf4 sys/netinet6/in6.c:1047 in6_joingroup(ffff8000011c4800,ffff8000329975b8,ffff800032997644) at in6_joingroup+0x6c in6_update_ifa(ffff8000011c4800,ffff8000329976c0,0) at in6_update_ifa+0x190d in6_ifattach_linklocal(ffff8000011c4800,0) at in6_ifattach_linklocal+0x331 sys/netinet6/in6_ifattach.c:281 in6_ifattach(ffff8000011c4800) at in6_ifattach+0x2b4 sys/netinet6/in6_ifattach.c:405 ifnewlladdr(ffff8000011c4800) at ifnewlladdr+0x236 sys/net/if.c:3366 ifioctl(ffff800001238fe8,8020691f,ffff800032997910,ffff8000ffff76e8) at ifioctl+0x2ca0 sys/net/if.c:2357 sys_ioctl(ffff8000ffff76e8,ffff800032997af0,ffff800032997a40) at sys_ioctl+0x67c syscall(ffff800032997af0) at syscall+0xbb6 mi_syscall sys/sys/syscall_mi.h:179 [inline] syscall(ffff800032997af0) at syscall+0xbb6 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x4850f30bef0, count: -10 ddb{0}> machine ddbcpu 1 Stopped at x86_ipi_db+0x27: addq $0x8,%rsp ddb{1}> trace x86_ipi_db(ffff800029b7bff0) at x86_ipi_db+0x27 sys/arch/amd64/amd64/db_interface.c:393 x86_ipi_handler() at x86_ipi_handler+0xd9 sys/arch/amd64/amd64/ipi.c:106 Xresume_lapic_ipi() at Xresume_lapic_ipi+0x27 __mp_lock(ffffffff83632228) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:113 [inline] __mp_lock(ffffffff83632228) at __mp_lock+0x192 sys/kern/kern_lock.c:144 syscall(ffff80002a148dc0) at syscall+0xad6 mi_syscall sys/sys/syscall_mi.h:179 [inline] syscall(ffff80002a148dc0) at syscall+0xad6 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7405dbc0c630, count: -6