kernel: page fault trap, code=10 Stopped at acpi_pdirpa+0xd55ea: uvm_fault(0xfffffd806c26d820, 0xe9779, 0, 1) -> e kernel: page fault trap, code=0 Stopped at db_read_bytes+0x110: movzbl 0xffffffffffffffff(%r15),%eax TID PID UID PRFLAGS PFLAGS CPU COMMAND *423852 70383 0 0 0x4000000 0 syz-executor db_read_bytes(e9779,1,ffff8000326211f4) at db_read_bytes+0x110 sys/arch/amd64/amd64/db_memrw.c:85 db_get_value(e9779,1,0) at db_get_value+0x59 db_disasm(e9779,0) at db_disasm+0x94 db_trap(6,10) at db_trap+0x181 sys/ddb/db_trap.c:71 db_ktrap(6,10,ffff800032621490) at db_ktrap+0x26c sys/arch/amd64/amd64/db_interface.c:151 kerntrap(ffff800032621490) at kerntrap+0x1ca sys/arch/amd64/amd64/trap.c:323 alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b acpi_pdirpa() at acpi_pdirpa+0xd55ea rt_match(fffffd806c24b5e8,0,1,0) at rt_match+0xf0 rt_clone sys/net/route.c:383 [inline] rt_match(fffffd806c24b5e8,0,1,0) at rt_match+0xf0 sys/net/route.c:358 route_mpath(fffffd806c24b5d0,fffffd807d290224,0,0) at route_mpath+0xb8 sys/net/route.c:255 in_pcbselsrc(ffff800032621878,fffffd807d290220,fffffd806c24b558) at in_pcbselsrc+0x250 udp_output(fffffd806c24b558,fffffd807d290f00,fffffd807d290200,0) at udp_output+0x758 sys/netinet/udp_usrreq.c:1017 sosend(fffffd806df121f8,fffffd807d290200,ffff8000326219d8,0,0,0) at sosend+0xa40 sendit(ffff80002a4c3968,3,ffff800032621b50,0,ffff800032621c10) at sendit+0x721 sys/kern/uipc_syscalls.c:786 end trace frame: 0xffff800032621be0, 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 *cpu0: uvm_fault(0xfffffd806c26d820, 0xe9779, 0, 1) -> e ddb> trace db_read_bytes(e9779,1,ffff8000326211f4) at db_read_bytes+0x110 sys/arch/amd64/amd64/db_memrw.c:85 db_get_value(e9779,1,0) at db_get_value+0x59 db_disasm(e9779,0) at db_disasm+0x94 db_trap(6,10) at db_trap+0x181 sys/ddb/db_trap.c:71 db_ktrap(6,10,ffff800032621490) at db_ktrap+0x26c sys/arch/amd64/amd64/db_interface.c:151 kerntrap(ffff800032621490) at kerntrap+0x1ca sys/arch/amd64/amd64/trap.c:323 alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b acpi_pdirpa() at acpi_pdirpa+0xd55ea rt_match(fffffd806c24b5e8,0,1,0) at rt_match+0xf0 rt_clone sys/net/route.c:383 [inline] rt_match(fffffd806c24b5e8,0,1,0) at rt_match+0xf0 sys/net/route.c:358 route_mpath(fffffd806c24b5d0,fffffd807d290224,0,0) at route_mpath+0xb8 sys/net/route.c:255 in_pcbselsrc(ffff800032621878,fffffd807d290220,fffffd806c24b558) at in_pcbselsrc+0x250 udp_output(fffffd806c24b558,fffffd807d290f00,fffffd807d290200,0) at udp_output+0x758 sys/netinet/udp_usrreq.c:1017 sosend(fffffd806df121f8,fffffd807d290200,ffff8000326219d8,0,0,0) at sosend+0xa40 sendit(ffff80002a4c3968,3,ffff800032621b50,0,ffff800032621c10) at sendit+0x721 sys/kern/uipc_syscalls.c:786 sys_sendmsg(ffff80002a4c3968,ffff800032621cc0,ffff800032621c10) at sys_sendmsg+0x246 sys/kern/uipc_syscalls.c:604 syscall(ffff800032621cc0) at syscall+0x97e sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xbb536bf5790, count: -17 ddb> show registers rdi 0 rsi 0x1 rbp 0xffff8000326211e0 rbx 0x1 rdx 0xffff80000122a600 rcx 0x28 rax 0xffff80002a4c3968 r8 0xffff800032621310 r9 0x8080808080808080 r10 0x950d1fd876c1be82 r11 0xbe2a9e70694692ce r12 0x1 r13 0x1 r14 0xffff8000326211f5 r15 0xe977a acpi_pdirpa+0xd55eb rip 0xffffffff8219ca50 db_read_bytes+0x110 cs 0x8 rflags 0x10286 __ALIGN_SIZE+0xf286 rsp 0xffff800032621180 ss 0x10 db_read_bytes+0x110: movzbl 0xffffffffffffffff(%r15),%eax ddb> show proc PROC (syz-executor) tid=423852 pid=70383 tcnt=2 stat=onproc flags process=0 proc=4000000 runpri=32, usrpri=85, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff80002a4c22a0,0xffff80002a4c2f58 process=0xffff80002a4677b0 user=0xffff80003261c000, vmspace=0xfffffd806c26d820 estcpu=35, cpticks=1, pctcpu=0.0, user=0, sys=1, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 69929 123462 87471 0 2 0x2 sh 70383 103358 66430 0 2 0 syz-executor *70383 423852 66430 0 7 0x4000000 syz-executor 65520 204574 81410 0 3 0x80 nanoslp syz-executor 65520 464337 81410 0 3 0x4000080 fsleep syz-executor 65520 417281 81410 0 3 0x4000080 kqsel syz-executor 23858 477566 64486 0 2 0 syz-executor 23858 268468 64486 0 3 0x4000080 kqpoll syz-executor 23858 63864 64486 0 3 0x4000080 fsleep syz-executor 87471 515522 9975 0 3 0x82 wait syz-executor 34573 20623 89421 0 3 0x80 nanoslp syz-executor 34573 482227 89421 0 3 0x4000080 msgwait syz-executor 34573 456065 89421 0 3 0x4000080 msgwait syz-executor 34573 509741 89421 0 3 0x4000080 fsleep syz-executor 59279 452343 12671 0 3 0x80 nanoslp syz-executor 59279 280404 12671 0 3 0x4000080 lockf syz-executor 59279 395102 12671 0 3 0x4000080 fsleep syz-executor 59279 297351 12671 0 3 0x4000080 fsleep syz-executor 82301 93933 9975 0 2 0x2 syz-executor 12671 103116 9975 0 3 0x82 nanoslp syz-executor 81410 398250 9975 0 3 0x82 nanoslp syz-executor 64486 101174 9975 0 3 0x82 nanoslp syz-executor 66430 191443 9975 0 3 0x82 nanoslp syz-executor 89421 325632 9975 0 3 0x82 nanoslp syz-executor 75492 44651 9975 0 2 0x2 syz-executor 12241 389065 0 0 3 0x14200 bored sosplice 9975 205304 17511 0 2 0x2 syz-executor 17511 350824 75 0 3 0x10008a sigsusp ksh 75 4772 42028 0 3 0x98 kqread sshd-session 42028 251495 92512 0 3 0x92 kqread sshd-session 10909 481171 1 0 3 0x100083 ttyin getty 92512 34863 1 0 3 0x88 kqread sshd 12479 412978 58958 73 2 0x1100010 syslogd 58958 496882 1 0 3 0x100082 sbwait syslogd 25043 183127 1 0 3 0x100080 kqread resolvd 39486 426869 71224 77 3 0x100092 kqread dhcpleased 20149 325783 71224 77 3 0x100092 kqread dhcpleased 71224 152938 1 0 3 0x80 kqread dhcpleased 60167 80119 0 0 3 0x14200 bored smr 16387 9869 0 0 2 0x14200 zerothread 70649 142155 0 0 3 0x14200 aiodoned aiodoned 10495 381762 0 0 3 0x14200 syncer update 39309 472582 0 0 3 0x14200 cleaner cleaner 50278 523996 0 0 3 0x14200 reaper reaper 70447 307681 0 0 3 0x14200 pgdaemon pagedaemon 2164 247574 0 0 3 0x14200 bored viomb 9370 248689 0 0 3 0x40014200 acpi0 acpi0 88026 520079 0 0 3 0x14200 bored softnet3 4670 42774 0 0 3 0x14200 bored softnet2 37641 326287 0 0 3 0x14200 bored softnet1 81137 488626 0 0 2 0x14200 softnet0 1614 75449 0 0 3 0x14200 bored systqmp 18867 522492 0 0 3 0x14200 bored systq 67961 210441 0 0 3 0x40014200 tmoslp softclock 43098 170857 0 0 3 0x40014200 idle0 1 425650 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 10186 10017K 10469K 166960K 12140 0 pcb 17 15K 16K 166960K 213 0 rtable 210 7K 8K 166960K 1740 0 pf 33 13K 14K 166960K 152 0 ifaddr 41 7K 8K 166960K 273 0 ifgroup 54 2K 2K 166960K 269 0 sysctl 3 1K 1K 166960K 3 0 counters 31 17K 18K 166960K 87 0 ioctlops 0 0K 4K 166960K 179 0 iov 0 0K 16K 166960K 58 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1407 88K 89K 166960K 2843 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 9K 166960K 19 0 VM map 2 1K 1K 166960K 2 0 sem 16 2K 2K 166960K 25 0 dirhash 12 2K 2K 166960K 30 0 ACPI 1690 195K 286K 166960K 12418 0 file desc 16 57K 97K 166960K 1384 0 sigio 0 0K 0K 166960K 11 0 proc 60 59K 124K 166960K 1642 0 subproc 104 6K 7K 166960K 663 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 83 0 in_multi 89 6K 7K 166960K 571 0 ether_multi 1 0K 0K 166960K 3 0 mrt 0 0K 0K 166960K 1 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 97 440K 440K 166960K 97 0 exec 0 0K 1K 166960K 1063 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 212 72K 91K 166960K 11678 0 UVM aobj 17 2K 2K 166960K 18 0 pinsyscall 37 74K 100K 166960K 3453 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 52 0 NDP 12 0K 2K 166960K 164 0 temp 60 6812K 6877K 166960K 44194 0 kqueue 17 28K 28K 166960K 151 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 120 231 0 228 2 0 2 2 0 8 1 rtentry 112 608 0 513 4 0 4 4 0 8 1 unpcb 144 1229 0 1214 6 0 6 6 0 8 5 syncache 336 4 0 4 2 1 1 1 0 8 1 tcpcb 808 352 0 348 8 0 8 8 0 8 7 arp 88 91 0 73 1 0 1 1 0 8 0 ipq 40 4 0 3 1 0 1 1 0 8 0 ipqe 40 6 0 5 1 0 1 1 0 8 0 inpcb 336 1352 0 1338 15 5 10 10 0 8 7 nd6 104 148 0 127 1 0 1 1 0 8 0 pkpcb 40 3 0 3 1 0 1 1 0 8 1 kcovpl 48 51 0 43 1 0 1 1 0 8 0 ppxss 1072 8 0 8 1 0 1 1 0 8 1 art_heap8 4096 3 0 0 3 0 3 3 0 8 0 art_heap4 256 2312 0 1887 32 3 29 30 0 8 0 art_table 32 2315 0 1887 4 0 4 4 0 8 0 art_node 16 564 0 479 1 0 1 1 0 8 0 sysvmsgpl 40 20 0 12 1 0 1 1 0 8 0 semupl 112 1 0 1 1 0 1 1 0 8 1 semapl 112 18 0 4 1 0 1 1 0 8 0 shmpl 112 15 0 1 1 0 1 1 0 8 0 dirhash 1024 29 0 12 3 0 3 3 0 8 0 dino2pl 256 3274 0 1698 99 0 99 99 0 8 0 ffsino 240 3274 0 1698 93 0 93 93 0 8 0 nchpl 144 4405 0 2665 65 0 65 65 0 8 0 uvmvnodes 80 4215 0 0 87 0 87 87 0 8 0 vnodes 216 4215 0 0 235 0 235 235 0 8 0 namei 1024 19410 0 19409 3 2 1 2 0 8 0 kstatmem 264 136 0 112 3 0 3 3 0 8 0 scsiplug 72 6 0 6 1 0 1 1 0 8 1 scxspl 216 23361 0 23361 10 2 8 8 1 8 8 plimitpl 152 249 0 233 1 0 1 1 0 8 0 sigapl 424 1583 0 1538 7 1 6 7 0 8 0 futexpl 64 11057 0 11052 1 0 1 1 0 8 0 knotepl 120 25969 0 25910 10 0 10 10 0 8 7 kqueuepl 184 251 0 237 3 0 3 3 0 8 2 pipepl 288 331 0 304 4 1 3 3 0 8 0 fdescpl 432 1562 0 1534 5 1 4 5 0 8 0 filepl 120 10258 0 10011 20 5 15 18 0 8 4 lockfpl 104 444 0 439 2 0 2 2 0 8 1 lockfspl 48 113 0 109 1 0 1 1 0 8 0 sessionpl 144 62 0 54 1 0 1 1 0 8 0 pgrppl 48 117 0 101 1 0 1 1 0 8 0 ucredpl 104 2215 0 2203 1 0 1 1 0 8 0 zombiepl 144 1538 0 1538 2 1 1 1 0 8 1 processpl 1096 1583 0 1538 4 0 4 4 0 8 0 procpl 648 2605 0 2549 6 0 6 6 0 8 0 sosppl 168 7 0 7 1 0 1 1 0 8 1 sockpl 504 2894 0 2862 56 38 18 33 0 8 12 mcl64k 65536 9 0 9 2 1 1 1 0 8 1 mcl16k 16384 1 0 1 1 0 1 1 0 8 1 mcl12k 12288 1 0 1 1 0 1 1 0 8 1 mcl8k 8192 29 0 29 2 1 1 1 0 8 1 mcl4k 4096 5 0 4 2 1 1 1 0 8 0 mcl2k 2048 7486 0 7385 31 14 17 27 0 8 2 mtagpl 96 28 0 28 1 0 1 1 0 8 1 mbufpl 256 17112 0 16904 26 6 20 21 0 8 6 bufpl 280 8255 0 2008 447 0 447 447 0 8 0 anonpl 24 279655 0 276527 72 22 50 50 0 187 23 amapchunkpl 152 37188 0 36744 33 1 32 32 0 158 13 amappl16 200 6025 0 6007 34 24 10 15 0 8 8 amappl15 192 5 0 5 2 1 1 1 0 8 1 amappl14 184 183 0 173 1 0 1 1 0 8 0 amappl13 176 76 0 76 1 1 0 1 0 8 0 amappl12 168 2820 0 2792 3 1 2 3 0 8 0 amappl11 160 45 0 35 1 0 1 1 0 8 0 amappl10 152 10 0 10 1 1 0 1 0 8 0 amappl9 144 109 0 109 1 1 0 1 0 8 0 amappl8 136 23 0 22 1 0 1 1 0 8 0 amappl7 128 176 0 166 1 0 1 1 0 8 0 amappl6 120 570 0 568 1 0 1 1 0 8 0 amappl5 112 287 0 277 1 0 1 1 0 8 0 amappl4 104 406 0 389 1 0 1 1 0 8 0 amappl3 96 7295 0 7198 4 0 4 4 0 8 1 amappl2 88 1219 0 1158 2 0 2 2 0 8 0 amappl1 80 13426 0 12913 14 2 12 14 0 8 0 amappl 88 10962 0 10804 5 0 5 5 0 92 0 dma65536 65536 1 0 1 1 1 0 1 0 8 0 dma4096 4096 1 0 1 1 1 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 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 72 17 0 1 1 0 1 1 0 8 0 uaddrrnd 24 1562 0 1534 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 1562 0 1534 1 0 1 1 0 8 0 vmmpekpl 168 12704 0 12662 3 0 3 3 0 8 0 vmmpepl 168 102130 0 100495 99 10 89 89 0 357 14 vmsppl 344 1561 0 1534 5 1 4 4 0 8 1 rwobjpl 24 35337 0 30272 32 0 32 32 0 8 0 pdppl 4096 3131 0 3068 147 78 69 83 0 8 6 pvpl 32 740134 0 731180 248 29 219 219 0 265 132 pmappl 216 1561 0 1534 3 0 3 3 0 8 1 extentpl 40 56 0 38 1 0 1 1 0 8 0 phpool 112 533 0 154 11 0 11 11 0 8 0 ddb> machine ddbcpu 0 No such command ddb> trace db_read_bytes(e9779,1,ffff8000326211f4) at db_read_bytes+0x110 sys/arch/amd64/amd64/db_memrw.c:85 db_get_value(e9779,1,0) at db_get_value+0x59 db_disasm(e9779,0) at db_disasm+0x94 db_trap(6,10) at db_trap+0x181 sys/ddb/db_trap.c:71 db_ktrap(6,10,ffff800032621490) at db_ktrap+0x26c sys/arch/amd64/amd64/db_interface.c:151 kerntrap(ffff800032621490) at kerntrap+0x1ca sys/arch/amd64/amd64/trap.c:323 alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b acpi_pdirpa() at acpi_pdirpa+0xd55ea rt_match(fffffd806c24b5e8,0,1,0) at rt_match+0xf0 rt_clone sys/net/route.c:383 [inline] rt_match(fffffd806c24b5e8,0,1,0) at rt_match+0xf0 sys/net/route.c:358 route_mpath(fffffd806c24b5d0,fffffd807d290224,0,0) at route_mpath+0xb8 sys/net/route.c:255 in_pcbselsrc(ffff800032621878,fffffd807d290220,fffffd806c24b558) at in_pcbselsrc+0x250 udp_output(fffffd806c24b558,fffffd807d290f00,fffffd807d290200,0) at udp_output+0x758 sys/netinet/udp_usrreq.c:1017 sosend(fffffd806df121f8,fffffd807d290200,ffff8000326219d8,0,0,0) at sosend+0xa40 sendit(ffff80002a4c3968,3,ffff800032621b50,0,ffff800032621c10) at sendit+0x721 sys/kern/uipc_syscalls.c:786 sys_sendmsg(ffff80002a4c3968,ffff800032621cc0,ffff800032621c10) at sys_sendmsg+0x246 sys/kern/uipc_syscalls.c:604 syscall(ffff800032621cc0) at syscall+0x97e sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xbb536bf5790, count: -17 ddb> machine ddbcpu 1 No such command ddb> trace db_read_bytes(e9779,1,ffff8000326211f4) at db_read_bytes+0x110 sys/arch/amd64/amd64/db_memrw.c:85 db_get_value(e9779,1,0) at db_get_value+0x59 db_disasm(e9779,0) at db_disasm+0x94 db_trap(6,10) at db_trap+0x181 sys/ddb/db_trap.c:71 db_ktrap(6,10,ffff800032621490) at db_ktrap+0x26c sys/arch/amd64/amd64/db_interface.c:151 kerntrap(ffff800032621490) at kerntrap+0x1ca sys/arch/amd64/amd64/trap.c:323 alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b acpi_pdirpa() at acpi_pdirpa+0xd55ea rt_match(fffffd806c24b5e8,0,1,0) at rt_match+0xf0 rt_clone sys/net/route.c:383 [inline] rt_match(fffffd806c24b5e8,0,1,0) at rt_match+0xf0 sys/net/route.c:358 route_mpath(fffffd806c24b5d0,fffffd807d290224,0,0) at route_mpath+0xb8 sys/net/route.c:255 in_pcbselsrc(ffff800032621878,fffffd807d290220,fffffd806c24b558) at in_pcbselsrc+0x250 udp_output(fffffd806c24b558,fffffd807d290f00,fffffd807d290200,0) at udp_output+0x758 sys/netinet/udp_usrreq.c:1017 sosend(fffffd806df121f8,fffffd807d290200,ffff8000326219d8,0,0,0) at sosend+0xa40 sendit(ffff80002a4c3968,3,ffff800032621b50,0,ffff800032621c10) at sendit+0x721 sys/kern/uipc_syscalls.c:786 sys_sendmsg(ffff80002a4c3968,ffff800032621cc0,ffff800032621c10) at sys_sendmsg+0x246 sys/kern/uipc_syscalls.c:604 syscall(ffff800032621cc0) at syscall+0x97e sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xbb536bf5790, count: -17