panic: uvm_fault: fault on non-pageable map (0xffffffff82554378, 0xffff800000aa9000) Stopped at db_enter+0x18: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND *209224 10636 0 0 0x4000000 0 syz-executor.1 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(ffffffff82531ee0,ffff800000aa9000,1,4) at uvm_fault+0x2148 uvmfault_amapcopy sys/uvm/uvm_fault.c:463 [inline] uvm_fault(ffffffff82531ee0,ffff800000aa9000,1,4) at uvm_fault+0x2148 sys/uvm/uvm_fault.c:559 pageflttrap() at pageflttrap+0x239 sys/arch/amd64/amd64/trap.c:199 kerntrap(ffff8000159100e0) at kerntrap+0xdb sys/arch/amd64/amd64/trap.c:287 alltraps_kern_meltdown(6,ffff80001570b000,fffffd802e3693f8,11,ffff80000005b6f0,ffff800015910348) at alltraps_kern_meltdown+0x7b ffff800000aa9000(b,ffff8000159102a8,83,ffff800015910348,0,b) at 0xffff800000aa9000 rt_match(fffffd8036ff12b0,0,1,0) at rt_match+0xbe rt_clone sys/net/route.c:266 [inline] rt_match(fffffd8036ff12b0,0,1,0) at rt_match+0xbe sys/net/route.c:242 in_pcbselsrc(ffff800015910420,fffffd803f02e120,fffffd8036ff1230) at in_pcbselsrc+0x219 sys/netinet/in_pcb.c:934 in_pcbconnect(fffffd8036ff1230,fffffd803f02e100) at in_pcbconnect+0x107 sys/netinet/in_pcb.c:492 udp_usrreq(fffffd8036ff2780,4,0,fffffd803f02e100,0,ffff8000ffff33d8) at udp_usrreq+0x560 sys_connect(ffff8000ffff33d8,ffff8000159105a8,ffff8000159105f0) at sys_connect+0x3df sys/kern/uipc_syscalls.c:388 syscall(ffff800015910670) at syscall+0x507 sys/arch/amd64/amd64/trap.c:555 Xsyscall(6,0,fffffffffffffed2,0,3,2fdf99a6010) at Xsyscall+0x128 end of kernel end trace frame: 0x3008827ff10, count: 1 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 (0xffffffff82554378, 0xffff800000aa9000) 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(ffffffff82531ee0,ffff800000aa9000,1,4) at uvm_fault+0x2148 uvmfault_amapcopy sys/uvm/uvm_fault.c:463 [inline] uvm_fault(ffffffff82531ee0,ffff800000aa9000,1,4) at uvm_fault+0x2148 sys/uvm/uvm_fault.c:559 pageflttrap() at pageflttrap+0x239 sys/arch/amd64/amd64/trap.c:199 kerntrap(ffff8000159100e0) at kerntrap+0xdb sys/arch/amd64/amd64/trap.c:287 alltraps_kern_meltdown(6,ffff80001570b000,fffffd802e3693f8,11,ffff80000005b6f0,ffff800015910348) at alltraps_kern_meltdown+0x7b ffff800000aa9000(b,ffff8000159102a8,83,ffff800015910348,0,b) at 0xffff800000aa9000 rt_match(fffffd8036ff12b0,0,1,0) at rt_match+0xbe rt_clone sys/net/route.c:266 [inline] rt_match(fffffd8036ff12b0,0,1,0) at rt_match+0xbe sys/net/route.c:242 in_pcbselsrc(ffff800015910420,fffffd803f02e120,fffffd8036ff1230) at in_pcbselsrc+0x219 sys/netinet/in_pcb.c:934 in_pcbconnect(fffffd8036ff1230,fffffd803f02e100) at in_pcbconnect+0x107 sys/netinet/in_pcb.c:492 udp_usrreq(fffffd8036ff2780,4,0,fffffd803f02e100,0,ffff8000ffff33d8) at udp_usrreq+0x560 sys_connect(ffff8000ffff33d8,ffff8000159105a8,ffff8000159105f0) at sys_connect+0x3df sys/kern/uipc_syscalls.c:388 syscall(ffff800015910670) at syscall+0x507 sys/arch/amd64/amd64/trap.c:555 Xsyscall(6,0,fffffffffffffed2,0,3,2fdf99a6010) at Xsyscall+0x128 end of kernel end trace frame: 0x3008827ff10, count: -14 ddb> show registers rdi 0xffffffff819984d7 db_enter+0x17 rsi 0x2f56 __ALIGN_SIZE+0x1f56 rbp 0xffff80001590fd10 rbx 0xffff80001590fdc0 rdx 0x2f57 __ALIGN_SIZE+0x1f57 rcx 0xffff80001570b000 rax 0xffff80001570b000 r8 0xffff80001590fcd0 r9 0x1 r10 0xffff800000ad1040 r11 0xc52e603c9e4e442c r12 0x3000000008 r13 0xffff80001590fd20 r14 0x100 r15 0x1 rip 0xffffffff819984d8 db_enter+0x18 cs 0x8 rflags 0x246 rsp 0xffff80001590fd00 ss 0x10 db_enter+0x18: addq $0x8,%rsp ddb> show proc PROC (syz-executor.1) pid=209224 stat=onproc flags process=0 proc=4000000 pri=82, usrpri=82, nice=20 forw=0xffffffffffffffff, list=0xffff8000ffff3b40,0xffffffff8255c268 process=0xffff8000ffff70f0 user=0xffff80001590b000, vmspace=0xfffffd803f014dd0 estcpu=36, cpticks=1, pctcpu=0.0 user=0, sys=1, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 10636 390921 2699 0 2 0 syz-executor.1 *10636 209224 2699 0 7 0x4000000 syz-executor.1 2699 168087 20304 0 3 0x82 nanosleep syz-executor.1 11932 412286 20304 0 3 0x2 biowait syz-executor.0 9225 367071 0 0 3 0x14200 acct acct 34272 508651 0 0 3 0x14200 bored sosplice 20304 151695 59326 0 3 0x82 thrsleep syz-fuzzer 20304 78268 59326 0 3 0x4000082 nanosleep syz-fuzzer 20304 138568 59326 0 3 0x4000082 thrsleep syz-fuzzer 20304 40234 59326 0 3 0x4000082 thrsleep syz-fuzzer 20304 508708 59326 0 3 0x4000082 thrsleep syz-fuzzer 20304 298781 59326 0 3 0x4000082 kqread syz-fuzzer 20304 566 59326 0 3 0x4000082 thrsleep syz-fuzzer 59326 387370 43254 0 3 0x10008a pause ksh 43254 495759 56074 0 3 0x92 select sshd 61045 104060 1 0 3 0x100083 ttyin getty 56074 456549 1 0 3 0x80 select sshd 43217 498505 60233 73 3 0x100090 kqread syslogd 60233 367352 1 0 3 0x100082 netio syslogd 3096 105769 1 77 3 0x100090 poll dhclient 45322 267159 1 0 3 0x80 poll dhclient 35219 492873 0 0 2 0x14200 zerothread 18592 416914 0 0 3 0x14200 aiodoned aiodoned 86570 245418 0 0 3 0x14200 syncer update 8915 276636 0 0 3 0x14200 cleaner cleaner 45721 133882 0 0 3 0x14200 reaper reaper 79991 373452 0 0 3 0x14200 pgdaemon pagedaemon 20176 175679 0 0 3 0x14200 bored crynlk 33787 470501 0 0 3 0x14200 bored crypto 65284 416922 0 0 3 0x40014200 acpi0 acpi0 80498 271123 0 0 3 0x14200 bored softnet 1510 516515 0 0 3 0x14200 bored systqmp 69448 34517 0 0 3 0x14200 bored systq 31800 79800 0 0 3 0x40014200 bored softclock 68777 485357 0 0 3 0x40014200 idle0 308 372474 0 0 3 0x14200 bored smr 1 99034 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 9554 7004K 7648K 78643K 13551 0 0 pcb 13 8K 9K 78643K 292 0 0 rtable 132 13K 14K 78643K 1105 0 0 ifaddr 86 18K 19K 78643K 293 0 0 counters 19 16K 16K 78643K 19 0 0 ioctlops 0 0K 2K 78643K 88 0 0 iov 0 0K 32K 78643K 505 0 0 mount 1 1K 1K 78643K 1 0 0 vnodes 1217 76K 77K 78643K 2380 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 27 0 0 VM map 2 0K 0K 78643K 6 0 0 sem 12 0K 0K 78643K 599 0 0 dirhash 12 2K 2K 78643K 12 0 0 ACPI 1793 195K 288K 78643K 12645 0 0 file desc 5 13K 25K 78643K 1372 0 0 sigio 0 0K 0K 78643K 28 0 0 proc 48 38K 63K 78643K 814 0 0 subproc 32 2K 2K 78643K 187 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 57 0 0 in_multi 34 2K 2K 78643K 160 0 0 ether_multi 1 0K 0K 78643K 10 0 0 mrt 0 0K 0K 78643K 5 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 438 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 102 21K 25K 78643K 4281 0 0 UVM aobj 130 4K 4K 78643K 143 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 291 0 0 NDP 19 0K 0K 78643K 90 0 0 temp 219 3544K 4184K 78643K 57198 0 0 kqueue 0 0K 0K 78643K 6 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 39 0 33 1 0 1 1 0 8 0 rtpcb 80 146 0 144 1 0 1 1 0 8 0 rtentry 112 204 0 157 2 0 2 2 0 8 0 unpcb 120 3639 0 3631 9 7 2 3 0 8 1 syncache 264 5 0 5 2 2 0 1 0 8 0 tcpqe 32 5262 0 5262 2 2 0 1 0 8 0 tcpcb 544 422 0 417 2 1 1 2 0 8 0 ipq 40 5 0 5 3 3 0 1 0 8 0 ipqe 40 141 0 141 3 3 0 1 0 8 0 inpcb 280 2350 0 2340 6 4 2 3 0 8 1 rttmr 72 1 0 1 1 1 0 1 0 8 0 nd6 48 22 0 17 1 0 1 1 0 8 0 pkpcb 40 8 0 8 3 3 0 1 0 8 0 ppxss 1128 23 0 23 9 8 1 1 0 8 1 art_heap8 4096 10 0 9 6 5 1 3 0 8 0 art_heap4 256 771 0 530 27 11 16 17 0 8 0 art_table 32 781 0 539 3 0 3 3 0 8 0 art_node 16 198 0 159 1 0 1 1 0 8 0 sysvmsgpl 40 26 0 19 1 0 1 1 0 8 0 semupl 112 1 0 1 1 1 0 1 0 8 0 semapl 112 597 0 587 1 0 1 1 0 8 0 shmpl 112 141 0 13 4 0 4 4 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino1pl 128 3461 0 2070 46 0 46 46 0 8 0 ffsino 240 3461 0 2070 83 0 83 83 0 8 0 nchpl 144 5597 0 3991 60 0 60 60 0 8 0 uvmvnodes 72 4344 0 0 79 0 79 79 0 8 0 vnodes 208 4344 0 0 229 0 229 229 0 8 0 namei 1024 18457 0 18456 5 4 1 1 0 8 0 vmpool 520 4 0 4 2 2 0 1 0 8 0 scsiplug 64 1 0 1 1 1 0 1 0 8 0 scxspl 192 24174 0 24172 21 20 1 7 0 8 0 plimitpl 152 136 0 129 1 0 1 1 0 8 0 sigapl 432 1516 0 1503 2 0 2 2 0 8 0 futexpl 56 38078 0 38078 3 2 1 1 0 8 1 knotepl 112 422 0 403 2 1 1 2 0 8 0 kqueuepl 104 402 0 399 1 0 1 1 0 8 0 pipepl 112 898 0 877 7 5 2 2 0 8 1 fdescpl 424 1517 0 1503 2 0 2 2 0 8 0 filepl 120 14662 0 14561 10 5 5 6 0 8 1 lockfpl 104 785 0 784 1 0 1 1 0 8 0 lockfspl 48 229 0 228 1 0 1 1 0 8 0 sessionpl 112 26 0 16 1 0 1 1 0 8 0 pgrppl 48 68 0 58 1 0 1 1 0 8 0 ucredpl 96 1435 0 1427 1 0 1 1 0 8 0 zombiepl 144 1503 0 1503 3 2 1 1 0 8 1 processpl 864 1533 0 1503 4 0 4 4 0 8 0 procpl 632 3170 0 3133 4 0 4 4 0 8 0 sosppl 128 24 0 24 4 4 0 1 0 8 0 sockpl 384 6156 0 6136 24 17 7 10 0 8 5 mcl64k 65536 646 0 646 66 65 1 33 0 8 1 mcl16k 16384 23 0 23 8 7 1 1 0 8 1 mcl12k 12288 55 0 55 5 4 1 1 0 8 1 mcl9k 9216 22 0 22 5 4 1 1 0 8 1 mcl8k 8192 61 0 61 5 4 1 1 0 8 1 mcl4k 4096 143 0 143 4 3 1 1 0 8 1 mcl2k2 2112 17 0 17 4 3 1 1 0 8 1 mcl2k 2048 61462 0 61425 15 9 6 13 0 8 0 mtagpl 80 55 0 47 4 3 1 1 0 8 0 mbufpl 256 112796 0 112707 73 64 9 34 0 8 1 bufpl 256 13962 0 6870 445 1 444 444 0 8 0 anonpl 16 212581 0 199759 127 45 82 84 0 62 11 amapchunkpl 152 8078 0 7974 33 27 6 15 0 158 1 amappl16 192 9515 0 8579 123 64 59 60 0 8 11 amappl15 184 462 0 462 1 1 0 1 0 8 0 amappl14 176 199 0 195 2 1 1 1 0 8 0 amappl13 168 264 0 263 2 1 1 1 0 8 0 amappl12 160 14 0 11 1 0 1 1 0 8 0 amappl11 152 148 0 137 1 0 1 1 0 8 0 amappl10 144 27 0 22 1 0 1 1 0 8 0 amappl9 136 1096 0 1089 1 0 1 1 0 8 0 amappl8 128 641 0 610 2 0 2 2 0 8 0 amappl7 120 85 0 78 1 0 1 1 0 8 0 amappl6 112 142 0 131 1 0 1 1 0 8 0 amappl5 104 249 0 238 1 0 1 1 0 8 0 amappl4 96 2000 0 1975 1 0 1 1 0 8 0 amappl3 88 178 0 172 1 0 1 1 0 8 0 amappl2 80 10992 0 10923 4 2 2 3 0 8 0 amappl1 72 37839 0 37423 26 17 9 20 0 8 0 amappl 80 3531 0 3496 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 64 142 0 13 3 0 3 3 0 8 0 uaddrrnd 24 1521 0 1503 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 1521 0 1503 1 0 1 1 0 8 0 vmmpekpl 168 13911 0 13889 2 0 2 2 0 8 0 vmmpepl 168 192437 0 190442 220 97 123 127 0 357 34 vmsppl 272 1516 0 1503 4 3 1 2 0 8 0 pdppl 4096 3048 0 3014 6 1 5 6 0 8 0 pvpl 32 603422 0 587494 369 120 249 302 0 265 83 pmappl 200 1520 0 1507 1 0 1 1 0 8 0 extentpl 40 41 0 26 1 0 1 1 0 8 0 phpool 112 754 0 180 18 0 18 18 0 8 0