uvm_fault(0xffffffff8292a200, 0x10, 0, 1) -> e kernel: page fault trap, code=0 Stopped at nd6_dad_duplicated+0x28: movq 0x10(%r14),%r13 ddb{0}> ddb{0}> set $lines = 0 ddb{0}> set $maxwidth = 0 ddb{0}> show panic kernel page fault uvm_fault(0xffffffff8292a200, 0x10, 0, 1) -> e nd6_dad_duplicated(0) at nd6_dad_duplicated+0x28 sys/netinet6/nd6_nbr.c:1265 end trace frame: 0xffff800020da9480, count: 0 ddb{0}> trace nd6_dad_duplicated(0) at nd6_dad_duplicated+0x28 sys/netinet6/nd6_nbr.c:1265 nd6_ns_input(fffffd806ca5eb00,28,18) at nd6_ns_input+0xe2c nd6_dad_ns_input sys/netinet6/nd6_nbr.c:1342 [inline] nd6_ns_input(fffffd806ca5eb00,28,18) at nd6_ns_input+0xe2c sys/netinet6/nd6_nbr.c:301 icmp6_input(ffff800020da9778,ffff800020da9784,3a,18) at icmp6_input+0xb35 sys/netinet6/icmp6.c:687 ip_deliver(ffff800020da9778,ffff800020da9784,3a,18) at ip_deliver+0x353 sys/netinet/ip_input.c:668 ip6_input_if(ffff800020da9778,ffff800020da9784,29,0,ffff8000006aa000) at ip6_input_if+0x1116 ipv6_input(ffff8000006aa000,fffffd8068a4bd00) at ipv6_input+0x48 sys/netinet6/ip6_input.c:171 if_input_local(ffff8000006aa000,fffffd8068a4bd00,18) at if_input_local+0x121 sys/net/if.c:771 loinput(ffff8000006aa000,fffffd8068a4bd00) at loinput+0x4d sys/net/if_loop.c:238 if_input_process(ffff8000006aa000,ffff800020da98b8) at if_input_process+0xda sys/net/if.c:830 ifiq_process(ffff8000006aa430) at ifiq_process+0x80 sys/net/ifq.c:768 taskq_thread(ffff80000002c000) at taskq_thread+0xfa sys/kern/kern_task.c:449 end trace frame: 0x0, count: -11 ddb{0}> show registers rdi 0 rsi 0 rbp 0xffff800020da9310 rbx 0 rdx 0 rcx 0 rax 0xffff800020d88768 r8 0xc300 __ALIGN_SIZE+0xb300 r9 0xffffffff819dab29 nd6_ns_input+0x3c9 r10 0x1 r11 0xe2c0bcb4eb9d5ed4 r12 0 r13 0x2 r14 0 r15 0xffff800000b41000 rip 0xffffffff819dd3f8 nd6_dad_duplicated+0x28 cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff800020da9290 ss 0x10 nd6_dad_duplicated+0x28: movq 0x10(%r14),%r13 ddb{0}> show proc PROC (softnet) pid=211609 stat=onproc flags process=14000 proc=200 pri=32, usrpri=50, nice=20 forw=0xffffffffffffffff, list=0xffff800020d88278,0xffff800020d889f0 process=0xffff800020d8abd0 user=0xffff800020da4000, vmspace=0xffffffff8292a200 estcpu=0, cpticks=1, pctcpu=0.0 user=0, sys=1, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 72873 372637 30080 0 2 0 syz-executor.0 72873 110002 30080 0 2 0x4000000 syz-executor.0 30080 113971 6551 0 7 0x482 syz-executor.0 4257 81436 6551 0 3 0x82 piperd syz-executor.1 31074 64508 0 0 3 0x14280 nfsidl nfsio 32704 217904 0 0 3 0x14280 nfsidl nfsio 99590 239661 0 0 3 0x14280 nfsidl nfsio 60670 402259 0 0 3 0x14280 nfsidl nfsio 23705 130087 0 0 3 0x14280 nfsidl nfsio 19916 31193 0 0 3 0x14280 nfsidl nfsio 66862 118940 0 0 3 0x14280 nfsidl nfsio 47939 356631 0 0 3 0x14280 nfsidl nfsio 14582 101543 0 0 3 0x14280 nfsidl nfsio 40199 343734 0 0 3 0x14280 nfsidl nfsio 4076 105699 0 0 3 0x14280 nfsidl nfsio 29451 359796 0 0 3 0x14280 nfsidl nfsio 47559 22608 0 0 3 0x14280 nfsidl nfsio 81869 333899 0 0 3 0x14280 nfsidl nfsio 55205 351687 0 0 3 0x14280 nfsidl nfsio 33597 375813 0 0 3 0x14280 nfsidl nfsio 96896 16228 0 0 3 0x14280 nfsidl nfsio 93913 331776 0 0 3 0x14280 nfsidl nfsio 46515 463858 0 0 3 0x14280 nfsidl nfsio 75872 430632 0 0 3 0x14280 nfsidl nfsio 40302 478630 0 0 3 0x14200 bored sosplice 38178 38119 0 0 3 0x14200 acct acct 6551 109813 41316 0 3 0x82 thrsleep syz-fuzzer 6551 450312 41316 0 3 0x4000082 nanosleep syz-fuzzer 6551 464417 41316 0 2 0x4000002 syz-fuzzer 6551 120400 41316 0 3 0x4000082 thrsleep syz-fuzzer 6551 510637 41316 0 3 0x4000082 thrsleep syz-fuzzer 6551 195313 41316 0 3 0x4000082 thrsleep syz-fuzzer 6551 454174 41316 0 3 0x4000082 thrsleep syz-fuzzer 6551 17965 41316 0 3 0x4000082 kqread syz-fuzzer 41316 189796 27506 0 3 0x10008a pause ksh 27506 325521 28829 0 3 0x92 select sshd 72090 70827 1 0 3 0x100083 ttyin getty 28829 332669 1 0 3 0x80 select sshd 56484 473074 82253 74 3 0x100092 bpf pflogd 82253 509549 1 0 3 0x80 netio pflogd 51150 153624 28500 73 3 0x100090 kqread syslogd 28500 312063 1 0 3 0x100082 netio syslogd 20845 297615 0 0 3 0x14200 bored smr 57902 191336 0 0 2 0x14200 zerothread 86373 50600 0 0 3 0x14200 aiodoned aiodoned 94737 466434 0 0 3 0x14200 syncer update 84559 478580 0 0 3 0x14200 cleaner cleaner 24768 133536 0 0 3 0x14200 reaper reaper 52636 327245 0 0 3 0x14200 pgdaemon pagedaemon 15649 453647 0 0 3 0x14200 bored crynlk 82805 74605 0 0 3 0x14200 bored crypto 12067 89582 0 0 3 0x40014200 acpi0 acpi0 39607 516047 0 0 3 0x40014200 idle1 *94179 211609 0 0 7 0x14200 softnet 82142 172152 0 0 2 0x14200 systqmp 118 475504 0 0 3 0x14200 bored systq 32121 402984 0 0 3 0x40014200 bored softclock 97242 478268 0 0 3 0x40014200 idle0 1 247487 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks Process 94179 (softnet) thread 0xffff800020d88768 (211609) exclusive kernel_lock &kernel_lock r = 0 (0xffffffff829228e8) #0 witness_lock+0x4c7 stacktrace_save sys/sys/stacktrace.h:36 [inline] #0 witness_lock+0x4c7 sys/kern/subr_witness.c:1164 #1 pageflttrap+0x7f sys/arch/amd64/amd64/trap.c:180 #2 kerntrap+0xec sys/arch/amd64/amd64/trap.c:302 #3 alltraps_kern_meltdown+0x7b #4 nd6_dad_duplicated+0x28 sys/netinet6/nd6_nbr.c:1265 #5 nd6_ns_input+0xe2c nd6_dad_ns_input sys/netinet6/nd6_nbr.c:1342 [inline] #5 nd6_ns_input+0xe2c sys/netinet6/nd6_nbr.c:301 #6 icmp6_input+0xb35 sys/netinet6/icmp6.c:687 #7 ip_deliver+0x353 sys/netinet/ip_input.c:668 #8 ip6_input_if+0x1116 #9 ipv6_input+0x48 sys/netinet6/ip6_input.c:171 #10 if_input_local+0x121 sys/net/if.c:771 #11 loinput+0x4d sys/net/if_loop.c:238 #12 if_input_process+0xda sys/net/if.c:830 #13 ifiq_process+0x80 sys/net/ifq.c:768 #14 taskq_thread+0xfa sys/kern/kern_task.c:449 #15 proc_trampoline+0x1c exclusive rwlock netlock r = 0 (0xffffffff82721490) #0 witness_lock+0x4c7 stacktrace_save sys/sys/stacktrace.h:36 [inline] #0 witness_lock+0x4c7 sys/kern/subr_witness.c:1164 #1 if_input_process+0xa1 sys/net/if.c:830 #2 ifiq_process+0x80 sys/net/ifq.c:768 #3 taskq_thread+0xfa sys/kern/kern_task.c:449 #4 proc_trampoline+0x1c shared rwlock softnet r = 0 (0xffff80000002c070) #0 witness_lock+0x4c7 stacktrace_save sys/sys/stacktrace.h:36 [inline] #0 witness_lock+0x4c7 sys/kern/subr_witness.c:1164 #1 taskq_thread+0xdf sys/kern/kern_task.c:445 #2 proc_trampoline+0x1c ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 9531 6360K 7760K 78643K 17581 0 pcb 13 8K 8K 78643K 709 0 rtable 106 7K 10K 78643K 1234 0 ifaddr 90 17K 18K 78643K 338 0 sysctl 2 0K 0K 78643K 2 0 counters 43 33K 34K 78643K 105 0 ioctlops 0 0K 8K 78643K 3025 0 iov 0 0K 16K 78643K 118 0 mount 1 1K 1K 78643K 1 0 vnodes 1222 77K 77K 78643K 2973 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 5K 78643K 34 0 VM map 2 1K 1K 78643K 2 0 sem 12 1K 1K 78643K 325 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1824 197K 290K 78643K 13058 0 file desc 5 13K 25K 78643K 2621 0 sigio 0 0K 0K 78643K 16 0 proc 57 51K 95K 78643K 674 0 subproc 32 2K 2K 78643K 85 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 0 0K 0K 78643K 83 0 in_multi 30 2K 2K 78643K 269 0 ether_multi 1 0K 0K 78643K 19 0 mrt 0 0K 0K 78643K 206 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 329 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 173 74K 74K 78643K 8773 0 UVM aobj 73 5K 5K 78643K 114 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 400 0 NDP 15 0K 0K 78643K 67 0 temp 145 3875K 3944K 78643K 14133 0 kqueue 3 4K 20K 78643K 59 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 14 0 8 1 0 1 1 0 8 0 plcache 128 20 0 0 1 0 1 1 0 8 0 rtpcb 88 293 0 293 8 8 0 1 0 8 0 rtentry 112 270 0 236 2 0 2 2 0 8 0 unpcb 120 664 0 656 1 0 1 1 0 8 0 syncache 272 10 0 10 3 3 0 1 0 8 0 tcpqe 32 261 0 261 2 2 0 1 0 8 0 tcpcb 592 2618 0 2609 17 16 1 9 0 8 0 inpcb 296 5345 0 5338 8 7 1 2 0 8 0 rttmr 72 87 0 87 2 2 0 1 0 8 0 nd6 48 47 0 41 1 0 1 1 0 8 0 pkpcb 40 23 0 23 6 6 0 1 0 8 0 swfcl 56 2 0 0 1 0 1 1 0 8 0 ppxss 1136 2 0 2 2 2 0 1 0 8 0 pfstscr 40 1 0 1 1 1 0 1 0 8 0 pffrag 232 11 0 10 3 2 1 1 0 482 0 pffrnode 88 11 0 10 3 2 1 1 0 8 0 pffrent 40 197 0 196 3 2 1 1 0 8 0 pfosfp 40 846 0 846 5 5 0 5 0 8 0 pfosfpen 112 1428 0 1428 21 21 0 21 0 8 0 pfrktable 1344 112 0 105 5 4 1 2 0 8 0 pftag 88 5 0 4 1 0 1 1 0 8 0 pfqueue 264 6 0 6 3 3 0 1 0 8 0 pfstitem 24 12 0 10 1 0 1 1 0 8 0 pfstkey 112 14 0 12 1 0 1 1 0 8 0 pfstate 328 13 0 11 2 1 1 2 0 8 0 pfsrctr 152 56 0 56 2 2 0 1 0 8 0 pfrule 1360 81 0 44 5 1 4 4 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 3434 0 3278 16 6 10 13 0 8 0 art_table 32 3435 0 3278 2 0 2 2 0 8 0 art_node 16 263 0 232 1 0 1 1 0 8 0 sysvmsgpl 40 57 0 17 1 0 1 1 0 8 0 semupl 112 1 0 1 1 1 0 1 0 8 0 semapl 112 312 0 302 1 0 1 1 0 8 0 shmpl 112 111 0 41 2 0 2 2 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 4330 0 2931 89 1 88 89 0 8 0 ffsino 272 4330 0 2931 94 0 94 94 0 8 0 nchpl 144 7662 0 6067 60 0 60 60 0 8 0 uvmvnodes 72 5926 0 0 108 0 108 108 0 8 0 vnodes 208 5926 0 0 312 0 312 312 0 8 0 namei 1024 21906 0 21906 9 8 1 1 0 8 1 percpumem 16 63 0 31 1 0 1 1 0 8 0 vcpupl 1984 5 0 0 1 0 1 1 0 8 0 vmpool 560 13 0 8 3 2 1 1 0 8 0 pfiaddrpl 120 37 0 32 3 2 1 1 0 8 0 scsiplug 72 1 0 1 1 1 0 1 0 8 0 scxspl 200 22788 0 22788 14 13 1 7 0 8 1 plimitpl 152 96 0 89 1 0 1 1 0 8 0 sigapl 424 2849 0 2798 6 0 6 6 0 8 0 futexpl 56 33923 0 33923 8 7 1 1 0 8 1 knotepl 112 202 0 182 2 1 1 2 0 8 0 kqueuepl 152 156 0 153 1 0 1 1 0 8 0 pipepl 304 293 0 282 5 3 2 2 0 8 0 fdescpl 496 2812 0 2798 3 0 3 3 0 8 0 filepl 152 15781 0 15687 13 9 4 5 0 8 0 lockfpl 104 408 0 408 7 7 0 1 0 8 0 lockfspl 48 124 0 124 7 7 0 1 0 8 0 sessionpl 120 21 0 12 1 0 1 1 0 8 0 pgrppl 48 38 0 29 1 0 1 1 0 8 0 ucredpl 96 1001 0 993 1 0 1 1 0 8 0 zombiepl 144 2798 0 2798 3 2 1 1 0 8 1 processpl 1008 2849 0 2798 9 2 7 7 0 8 0 procpl 632 7800 0 7741 10 4 6 6 0 8 0 srpgc 72 2 0 2 1 1 0 1 0 8 0 sosppl 144 13 0 13 6 6 0 1 0 8 0 sockpl 400 6331 0 6316 12 10 2 4 0 8 0 mcl64k 65536 264 0 0 33 0 33 33 0 8 0 mcl16k 16384 2 0 0 1 0 1 1 0 8 0 mcl12k 12288 17 0 0 2 0 2 2 0 8 0 mcl9k 9216 10 0 0 1 0 1 1 0 8 0 mcl8k 8192 14 0 0 2 0 2 2 0 8 0 mcl4k 4096 17 0 0 3 0 3 3 0 8 0 mcl2k2 2112 3 0 0 1 0 1 1 0 8 0 mcl2k 2048 216 0 0 26 3 23 26 0 8 0 mtagpl 96 31 0 0 1 0 1 1 0 8 0 mbufpl 256 569 0 0 32 0 32 32 0 8 0 bufpl 280 8019 0 1782 446 0 446 446 0 8 0 anonpl 16 272597 0 256225 116 39 77 90 0 124 0 amapchunkpl 152 15292 0 15019 36 23 13 26 0 158 0 amappl16 192 12136 0 11237 90 41 49 57 0 8 3 amappl15 184 1050 0 1049 1 0 1 1 0 8 0 amappl14 176 1 0 0 1 0 1 1 0 8 0 amappl13 168 73 0 68 1 0 1 1 0 8 0 amappl12 160 1190 0 1184 1 0 1 1 0 8 0 amappl11 152 67 0 57 1 0 1 1 0 8 0 amappl10 144 1063 0 1061 1 0 1 1 0 8 0 amappl9 136 422 0 419 1 0 1 1 0 8 0 amappl8 128 449 0 394 2 0 2 2 0 8 0 amappl7 120 1191 0 1177 1 0 1 1 0 8 0 amappl6 112 41 0 30 1 0 1 1 0 8 0 amappl5 104 3834 0 3821 1 0 1 1 0 8 0 amappl4 96 568 0 533 1 0 1 1 0 8 0 amappl3 88 224 0 214 1 0 1 1 0 8 0 amappl2 80 21331 0 21267 2 0 2 2 0 8 0 amappl1 72 89820 0 89408 23 13 10 18 0 8 0 amappl 80 8119 0 8048 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 64 113 0 41 2 0 2 2 0 8 0 uaddrrnd 24 2825 0 2806 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 2825 0 2806 1 0 1 1 0 8 0 vmmpekpl 168 21069 0 21025 3 0 3 3 0 8 0 vmmpepl 168 357253 0 355205 224 109 115 127 0 357 19 vmsppl 368 2824 0 2806 2 0 2 2 0 8 0 pdppl 4096 5657 0 5617 7 1 6 6 0 8 0 pvpl 32 805982 0 786200 281 103 178 213 0 265 0 pmappl 232 2824 0 2806 3 1 2 2 0 8 0 extentpl 40 53 0 36 1 0 1 1 0 8 0 phpool 112 340 0 35 9 0 9 9 0 8 0 ddb{0}> machine ddbcpu 0 Invalid cpu 0 ddb{0}> trace nd6_dad_duplicated(0) at nd6_dad_duplicated+0x28 sys/netinet6/nd6_nbr.c:1265 nd6_ns_input(fffffd806ca5eb00,28,18) at nd6_ns_input+0xe2c nd6_dad_ns_input sys/netinet6/nd6_nbr.c:1342 [inline] nd6_ns_input(fffffd806ca5eb00,28,18) at nd6_ns_input+0xe2c sys/netinet6/nd6_nbr.c:301 icmp6_input(ffff800020da9778,ffff800020da9784,3a,18) at icmp6_input+0xb35 sys/netinet6/icmp6.c:687 ip_deliver(ffff800020da9778,ffff800020da9784,3a,18) at ip_deliver+0x353 sys/netinet/ip_input.c:668 ip6_input_if(ffff800020da9778,ffff800020da9784,29,0,ffff8000006aa000) at ip6_input_if+0x1116 ipv6_input(ffff8000006aa000,fffffd8068a4bd00) at ipv6_input+0x48 sys/netinet6/ip6_input.c:171 if_input_local(ffff8000006aa000,fffffd8068a4bd00,18) at if_input_local+0x121 sys/net/if.c:771 loinput(ffff8000006aa000,fffffd8068a4bd00) at loinput+0x4d sys/net/if_loop.c:238 if_input_process(ffff8000006aa000,ffff800020da98b8) at if_input_process+0xda sys/net/if.c:830 ifiq_process(ffff8000006aa430) at ifiq_process+0x80 sys/net/ifq.c:768 taskq_thread(ffff80000002c000) at taskq_thread+0xfa sys/kern/kern_task.c:449 end trace frame: 0x0, count: -11 ddb{0}> machine ddbcpu 1 Stopped at x86_ipi_db+0x1a: addq $0x8,%rsp ddb{1}> trace x86_ipi_db(ffff800020d70ff0) at x86_ipi_db+0x1a sys/arch/amd64/amd64/db_interface.c:352 x86_ipi_handler() at x86_ipi_handler+0xc6 sys/arch/amd64/amd64/ipi.c:106 Xresume_lapic_ipi() at Xresume_lapic_ipi+0x23 __mp_lock(ffffffff829226e0) at __mp_lock+0x12e __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff829226e0) at __mp_lock+0x12e sys/kern/kern_lock.c:147 __mp_acquire_count(ffffffff829226e0,1) at __mp_acquire_count+0x51 sys/kern/kern_lock.c:227 mi_switch() at mi_switch+0x392 sys/kern/sched_bsd.c:435 sleep_finish(ffff800020e18190,1) at sleep_finish+0x113 sys/kern/kern_synch.c:418 sleep_finish_all(ffff800020e18190,1) at sleep_finish_all+0x32 sleep_finish_timeout sys/kern/kern_synch.c:447 [inline] sleep_finish_all(ffff800020e18190,1) at sleep_finish_all+0x32 sys/kern/kern_synch.c:393 tsleep(ffffffff827c070c,120,ffffffff823f9937,2) at tsleep+0x1cc sys/kern/kern_synch.c:155 sys_nanosleep(ffff800022f5d8d8,ffff800020e182c0,ffff800020e18310) at sys_nanosleep+0x205 sys/kern/kern_time.c:297 syscall(ffff800020e18390) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800020e18390) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7fffffafd0, count: -12