panic: uvm_fault: fault on non-pageable map (0xffffffff82524400, 0xffff800000aa0000) Stopped at db_enter+0x18: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND *166035 18153 0 0 0x4000000 0 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 uvm_fault(ffffffff82556178,ffff800000aa0000,1,4) at uvm_fault+0x2148 uvmfault_amapcopy sys/uvm/uvm_fault.c:463 [inline] uvm_fault(ffffffff82556178,ffff800000aa0000,1,4) at uvm_fault+0x2148 sys/uvm/uvm_fault.c:559 pageflttrap() at pageflttrap+0x239 sys/arch/amd64/amd64/trap.c:199 kerntrap(ffff8000149180c0) at kerntrap+0xdb sys/arch/amd64/amd64/trap.c:287 alltraps_kern_meltdown(6,ffff800014f19000,fffffd802c7f3388,11,ffff80000005be60,ffff800014918328) at alltraps_kern_meltdown+0x7b ffff800000aa0800(b,ffff800014918288,83,ffff800014918328,0,b) at 0xffff800000aa0800 rt_match(fffffd8037007eb8,fffffd80398a26f8,1,0) at rt_match+0xbe rt_clone sys/net/route.c:266 [inline] rt_match(fffffd8037007eb8,fffffd80398a26f8,1,0) at rt_match+0xbe sys/net/route.c:242 ip_output(fffffd80398a2600,0,fffffd8037007ea8,20,0,fffffd8037007e38) at ip_output+0x4d2 sys/netinet/ip_output.c:204 rip_output(fffffd80398a2600,fffffd80363ddd88,ffff800014918538,ffff800014f19000) at rip_output+0x22b sys/netinet/raw_ip.c:289 rip_usrreq(fffffd80363ddd88,9,fffffd80398a2600,0,0,ffff8000159558c8) at rip_usrreq+0x46a sys/netinet/raw_ip.c:538 sosend(fffffd80363ddd88,0,ffff8000149187c0,0,0,80) at sosend+0x63d sys/kern/uipc_socket.c:524 dofilewritev(ffff8000159558c8,3,ffff8000149187c0,0,ffff8000149188b0) at dofilewritev+0x1ac sys/kern/sys_generic.c:364 sys_writev(ffff8000159558c8,ffff800014918868,ffff8000149188b0) at sys_writev+0xa7 sys/kern/sys_generic.c:311 end trace frame: 0xffff800014918920, count: 0 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 uvm_fault: fault on non-pageable map (0xffffffff82524400, 0xffff800000aa0000) ddb> 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 uvm_fault(ffffffff82556178,ffff800000aa0000,1,4) at uvm_fault+0x2148 uvmfault_amapcopy sys/uvm/uvm_fault.c:463 [inline] uvm_fault(ffffffff82556178,ffff800000aa0000,1,4) at uvm_fault+0x2148 sys/uvm/uvm_fault.c:559 pageflttrap() at pageflttrap+0x239 sys/arch/amd64/amd64/trap.c:199 kerntrap(ffff8000149180c0) at kerntrap+0xdb sys/arch/amd64/amd64/trap.c:287 alltraps_kern_meltdown(6,ffff800014f19000,fffffd802c7f3388,11,ffff80000005be60,ffff800014918328) at alltraps_kern_meltdown+0x7b ffff800000aa0800(b,ffff800014918288,83,ffff800014918328,0,b) at 0xffff800000aa0800 rt_match(fffffd8037007eb8,fffffd80398a26f8,1,0) at rt_match+0xbe rt_clone sys/net/route.c:266 [inline] rt_match(fffffd8037007eb8,fffffd80398a26f8,1,0) at rt_match+0xbe sys/net/route.c:242 ip_output(fffffd80398a2600,0,fffffd8037007ea8,20,0,fffffd8037007e38) at ip_output+0x4d2 sys/netinet/ip_output.c:204 rip_output(fffffd80398a2600,fffffd80363ddd88,ffff800014918538,ffff800014f19000) at rip_output+0x22b sys/netinet/raw_ip.c:289 rip_usrreq(fffffd80363ddd88,9,fffffd80398a2600,0,0,ffff8000159558c8) at rip_usrreq+0x46a sys/netinet/raw_ip.c:538 sosend(fffffd80363ddd88,0,ffff8000149187c0,0,0,80) at sosend+0x63d sys/kern/uipc_socket.c:524 dofilewritev(ffff8000159558c8,3,ffff8000149187c0,0,ffff8000149188b0) at dofilewritev+0x1ac sys/kern/sys_generic.c:364 sys_writev(ffff8000159558c8,ffff800014918868,ffff8000149188b0) at sys_writev+0xa7 sys/kern/sys_generic.c:311 syscall(ffff800014918930) at syscall+0x507 sys/arch/amd64/amd64/trap.c:555 Xsyscall(6,0,d,0,3,83ee29c7010) at Xsyscall+0x128 end of kernel end trace frame: 0x841386697d0, count: -16 ddb> show registers rdi 0xffffffff81e953f7 db_enter+0x17 rsi 0x2e24 __ALIGN_SIZE+0x1e24 rbp 0xffff800014917cf0 rbx 0xffff800014917da0 rdx 0x2e25 __ALIGN_SIZE+0x1e25 rcx 0xffff800014f19000 rax 0xffff800014f19000 r8 0xffff800014917cb0 r9 0x1 r10 0xffff800000b0cc80 r11 0xfb9521a0064acc95 r12 0x3000000008 r13 0xffff800014917d00 r14 0x100 r15 0x1 rip 0xffffffff81e953f8 db_enter+0x18 cs 0x8 rflags 0x246 rsp 0xffff800014917ce0 ss 0x10 db_enter+0x18: addq $0x8,%rsp ddb> show proc PROC (syz-executor.0) pid=166035 stat=onproc flags process=0 proc=4000000 pri=78, usrpri=78, nice=20 forw=0xffffffffffffffff, list=0xffff800015954780,0xffffffff82573c28 process=0xffff8000ffff66d0 user=0xffff800014913000, vmspace=0xfffffd803f014aa0 estcpu=36, cpticks=0, pctcpu=0.0 user=0, sys=0, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 18153 380808 89540 0 2 0 syz-executor.0 *18153 166035 89540 0 7 0x4000000 syz-executor.0 32658 368619 73435 0 2 0 syz-executor.1 32658 96144 73435 0 3 0x4000080 lockf syz-executor.1 89540 353713 1335 0 3 0x82 nanosleep syz-executor.0 73435 156016 1335 0 3 0x82 nanosleep syz-executor.1 99212 483924 0 0 3 0x14200 bored sosplice 38805 292423 0 0 3 0x14200 acct acct 1335 338264 89645 0 3 0x82 thrsleep syz-fuzzer 1335 308924 89645 0 3 0x4000082 nanosleep syz-fuzzer 1335 181653 89645 0 3 0x4000082 kqread syz-fuzzer 1335 195979 89645 0 3 0x4000082 thrsleep syz-fuzzer 1335 8545 89645 0 3 0x4000082 thrsleep syz-fuzzer 1335 523189 89645 0 3 0x4000082 thrsleep syz-fuzzer 1335 195046 89645 0 3 0x4000082 thrsleep syz-fuzzer 89645 313725 28559 0 3 0x10008a pause ksh 28559 379467 66251 0 3 0x92 select sshd 34265 338369 1 0 3 0x100083 ttyin getty 66251 51755 1 0 3 0x80 select sshd 73216 320566 28819 73 3 0x100090 kqread syslogd 28819 78822 1 0 3 0x100082 netio syslogd 17547 362159 1 77 3 0x100090 poll dhclient 79365 281663 1 0 3 0x80 poll dhclient 32164 166219 0 0 2 0x14200 zerothread 78972 402498 0 0 3 0x14200 aiodoned aiodoned 69850 73289 0 0 3 0x14200 syncer update 76204 262177 0 0 3 0x14200 cleaner cleaner 5046 245726 0 0 3 0x14200 reaper reaper 30506 362192 0 0 3 0x14200 pgdaemon pagedaemon 52655 293682 0 0 3 0x14200 bored crynlk 47709 361044 0 0 3 0x14200 bored crypto 6394 464435 0 0 3 0x40014200 acpi0 acpi0 93148 4466 0 0 3 0x14200 bored softnet 6001 456525 0 0 3 0x14200 bored systqmp 43195 26747 0 0 3 0x14200 bored systq 76676 160373 0 0 3 0x40014200 bored softclock 23960 76646 0 0 3 0x40014200 idle0 93264 202783 0 0 3 0x14200 bored smr 1 94146 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 Kern Lim devbuf 9552 6356K 6999K 78643K 13043 0 0 pcb 13 10K 12K 78643K 233 0 0 rtable 87 7K 8K 78643K 939 0 0 ifaddr 69 15K 16K 78643K 278 0 0 counters 19 16K 16K 78643K 19 0 0 ioctlops 0 0K 2K 78643K 40 0 0 iov 0 0K 24K 78643K 286 0 0 mount 1 1K 1K 78643K 1 0 0 vnodes 1211 76K 77K 78643K 2192 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 18 0 0 VM map 2 0K 0K 78643K 6 0 0 sem 12 0K 0K 78643K 217 0 0 dirhash 12 2K 2K 78643K 12 0 0 ACPI 1793 195K 288K 78643K 12645 0 0 file desc 6 17K 25K 78643K 1187 0 0 sigio 0 0K 0K 78643K 27 0 0 proc 49 38K 55K 78643K 671 0 0 subproc 32 2K 2K 78643K 121 0 0 NFS srvsock 1 0K 0K 78643K 1 0 0 NFS daemon 1 16K 16K 78643K 1 0 0 ip_moptions 0 0K 0K 78643K 76 0 0 in_multi 12 0K 2K 78643K 108 0 0 ether_multi 1 0K 0K 78643K 6 0 0 mrt 0 0K 0K 78643K 9 0 0 ISOFS mount 1 32K 32K 78643K 1 0 0 MSDOSFS mount 1 16K 16K 78643K 1 0 0 ttys 84 371K 371K 78643K 84 0 0 exec 0 0K 1K 78643K 357 0 0 pfkey data 0 0K 0K 78643K 2 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 114 22K 39K 78643K 3829 0 0 UVM aobj 66 3K 3K 78643K 72 0 0 memdesc 1 4K 4K 78643K 1 0 0 crypto data 1 1K 1K 78643K 1 0 0 ip6_options 0 0K 0K 78643K 249 0 0 NDP 17 0K 0K 78643K 79 0 0 temp 205 3544K 4170K 78643K 103026 0 0 kqueue 0 0K 0K 78643K 9 0 0 SYN cache 2 16K 16K 78643K 2 0 0 ddb> show all pools Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle arp 64 36 0 32 1 0 1 1 0 8 0 rtpcb 80 95 0 93 1 0 1 1 0 8 0 rtentry 112 159 0 130 2 0 2 2 0 8 0 unpcb 120 498 0 488 1 0 1 1 0 8 0 syncache 264 10 0 10 4 4 0 1 0 8 0 sackhl 24 1 0 1 1 1 0 1 0 8 0 tcpqe 32 4610 0 4610 2 2 0 2 0 8 0 tcpcb 544 1771 0 1767 19 17 2 13 0 8 1 ipq 40 8 0 8 3 3 0 1 0 8 0 ipqe 40 58 0 58 3 3 0 1 0 8 0 inpcb 280 2586 0 2578 12 9 3 9 0 8 2 rttmr 72 4 0 4 2 2 0 1 0 8 0 ip6q 72 1 0 1 1 0 1 1 0 8 1 ip6af 40 2 0 2 1 0 1 1 0 8 1 nd6 48 14 0 14 3 3 0 1 0 8 0 pkpcb 40 12 0 12 4 4 0 1 0 8 0 ppxss 1128 25 0 25 5 5 0 1 0 8 0 art_heap8 4096 3 0 1 2 0 2 2 0 8 0 art_heap4 256 633 0 493 18 6 12 15 0 8 1 art_table 32 636 0 494 2 0 2 2 0 8 0 art_node 16 157 0 131 1 0 1 1 0 8 0 sysvmsgpl 40 33 0 16 1 0 1 1 0 8 0 semupl 112 1 0 1 1 1 0 1 0 8 0 semapl 112 215 0 205 1 0 1 1 0 8 0 shmpl 112 70 0 6 2 0 2 2 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino1pl 128 3303 0 1910 46 0 46 46 0 8 0 ffsino 240 3303 0 1910 83 0 83 83 0 8 0 nchpl 144 5444 0 3847 60 0 60 60 0 8 0 uvmvnodes 72 3956 0 0 72 0 72 72 0 8 0 vnodes 208 3956 0 0 209 0 209 209 0 8 0 namei 1024 17213 0 17213 3 2 1 1 0 8 1 vmpool 520 4 0 4 2 2 0 1 0 8 0 scsiplug 64 2 0 2 1 1 0 1 0 8 0 scxspl 192 17188 0 17188 19 16 3 7 0 8 3 plimitpl 152 110 0 103 1 0 1 1 0 8 0 sigapl 432 1343 0 1329 2 0 2 2 0 8 0 futexpl 56 31348 0 31348 1 0 1 1 0 8 1 knotepl 112 354 0 335 2 1 1 2 0 8 0 kqueuepl 104 470 0 468 4 3 1 4 0 8 0 pipepl 112 796 0 777 4 2 2 2 0 8 0 fdescpl 424 1344 0 1329 2 0 2 2 0 8 0 filepl 120 11335 0 11234 14 9 5 11 0 8 1 lockfpl 104 370 0 367 1 0 1 1 0 8 0 lockfspl 48 138 0 136 1 0 1 1 0 8 0 sessionpl 112 22 0 12 1 0 1 1 0 8 0 pgrppl 48 30 0 20 1 0 1 1 0 8 0 ucredpl 96 1850 0 1843 1 0 1 1 0 8 0 zombiepl 144 1329 0 1329 3 2 1 1 0 8 1 processpl 864 1360 0 1329 4 0 4 4 0 8 0 procpl 632 2874 0 2835 4 0 4 4 0 8 0 sosppl 128 15 0 15 5 5 0 1 0 8 0 sockpl 384 3213 0 3193 21 16 5 13 0 8 2 mcl64k 65536 330 0 330 30 29 1 29 0 8 1 mcl16k 16384 13 0 13 6 5 1 1 0 8 1 mcl12k 12288 26 0 26 4 4 0 1 0 8 0 mcl9k 9216 30 0 30 4 4 0 1 0 8 0 mcl8k 8192 44 0 44 4 3 1 1 0 8 1 mcl4k 4096 105 0 105 2 1 1 1 0 8 1 mcl2k2 2112 11 0 11 3 3 0 1 0 8 0 mcl2k 2048 62202 0 62155 25 18 7 23 0 8 0 mtagpl 80 59 0 51 2 1 1 1 0 8 0 mbufpl 256 110673 0 110556 44 33 11 22 0 8 0 bufpl 256 11928 0 6671 329 0 329 329 0 8 0 anonpl 16 164450 0 148043 111 28 83 84 0 62 13 amapchunkpl 152 6698 0 6589 28 20 8 14 0 158 3 amappl16 192 7587 0 6647 94 38 56 60 0 8 8 amappl15 184 217 0 217 1 1 0 1 0 8 0 amappl14 176 59 0 56 2 1 1 1 0 8 0 amappl13 168 24 0 22 1 0 1 1 0 8 0 amappl12 160 294 0 292 1 0 1 1 0 8 0 amappl11 152 150 0 139 1 0 1 1 0 8 0 amappl10 144 19 0 16 1 0 1 1 0 8 0 amappl9 136 1191 0 1179 1 0 1 1 0 8 0 amappl8 128 762 0 726 2 0 2 2 0 8 0 amappl7 120 57 0 51 1 0 1 1 0 8 0 amappl6 112 175 0 163 1 0 1 1 0 8 0 amappl5 104 471 0 461 1 0 1 1 0 8 0 amappl4 96 1576 0 1549 1 0 1 1 0 8 0 amappl3 88 153 0 148 1 0 1 1 0 8 0 amappl2 80 9738 0 9663 4 2 2 3 0 8 0 amappl1 72 33884 0 33456 28 19 9 20 0 8 0 amappl 80 3178 0 3140 1 0 1 1 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 71 0 6 2 0 2 2 0 8 0 uaddrrnd 24 1348 0 1329 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 1348 0 1329 1 0 1 1 0 8 0 vmmpekpl 168 12642 0 12612 2 0 2 2 0 8 0 vmmpepl 168 168326 0 166211 198 84 114 124 0 357 22 vmsppl 272 1343 0 1329 2 1 1 2 0 8 0 pdppl 4096 2702 0 2666 6 1 5 6 0 8 0 pvpl 32 447534 0 428045 261 66 195 203 0 265 34 pmappl 200 1347 0 1333 1 0 1 1 0 8 0 extentpl 40 41 0 26 1 0 1 1 0 8 0 phpool 112 578 0 118 14 0 14 14 0 8 0