uvm_fault(0xfffffd80658272c8, 0x18, 0, 1) -> e kernel: page fault trap, code=0 Stopped at checkalias+0xb7: movl 0x18(%r13),%ebx TID PID UID PRFLAGS PFLAGS CPU COMMAND *216525 71858 0 0x8000000 0x4000000 0 syz-executor checkalias(fffffd805b618e88,31700,0) at checkalias+0xb7 sys/kern/vfs_subr.c:564 cdevvp(31700,ffff80002a53afe0) at cdevvp+0xd2 sys/kern/vfs_subr.c:507 spec_open_clone(ffff80002a53b0b8) at spec_open_clone+0x1ee sys/kern/spec_vnops.c:711 spec_open(ffff80002a53b0b8) at spec_open+0x326 sys/kern/spec_vnops.c:148 VOP_OPEN(fffffd806ec2ec00,10001,fffffd807f7d76e8,ffff8000376256e8) at VOP_OPEN+0x82 sys/kern/vfs_vops.c:138 vn_open(ffff80002a53b308,10201,0) at vn_open+0x708 sys/kern/vfs_vnops.c:177 doopenat(ffff8000376256e8,ffffff9c,20000000,10200,0,ffff80002a53b4b0) at doopenat+0x31d sys/kern/vfs_syscalls.c:1123 syscall(ffff80002a53b560) at syscall+0x97e sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x51cbcf47bc0, count: 6 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(0xfffffd80658272c8, 0x18, 0, 1) -> e ddb> trace checkalias(fffffd805b618e88,31700,0) at checkalias+0xb7 sys/kern/vfs_subr.c:564 cdevvp(31700,ffff80002a53afe0) at cdevvp+0xd2 sys/kern/vfs_subr.c:507 spec_open_clone(ffff80002a53b0b8) at spec_open_clone+0x1ee sys/kern/spec_vnops.c:711 spec_open(ffff80002a53b0b8) at spec_open+0x326 sys/kern/spec_vnops.c:148 VOP_OPEN(fffffd806ec2ec00,10001,fffffd807f7d76e8,ffff8000376256e8) at VOP_OPEN+0x82 sys/kern/vfs_vops.c:138 vn_open(ffff80002a53b308,10201,0) at vn_open+0x708 sys/kern/vfs_vnops.c:177 doopenat(ffff8000376256e8,ffffff9c,20000000,10200,0,ffff80002a53b4b0) at doopenat+0x31d sys/kern/vfs_syscalls.c:1123 syscall(ffff80002a53b560) at syscall+0x97e sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x51cbcf47bc0, count: -9 ddb> show registers rdi 0xffff800030df2000 rsi 0x44d rbp 0xffff80002a53af60 rbx 0x61700 acpi_pdirpa+0x4d571 rdx 0xffff800030df2000 rcx 0x44c rax 0xffffffff8139f223 checkalias+0x183 r8 0 r9 0xffffffffffffffff r10 0xa405cf67ecdc96ca r11 0x881842e2e061aa41 r12 0x31700 acpi_pdirpa+0x1d571 r13 0 r14 0x31700 acpi_pdirpa+0x1d571 r15 0xfffffd806b0bb0f8 rip 0xffffffff8139f157 checkalias+0xb7 cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff80002a53aef0 ss 0x10 checkalias+0xb7: movl 0x18(%r13),%ebx ddb> show proc PROC (syz-executor) tid=216525 pid=71858 tcnt=2 stat=onproc flags process=8000000 proc=4000000 runpri=32, usrpri=83, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff800037624a40,0xffff800037625980 process=0xffff80003760f318 user=0xffff80002a536000, vmspace=0xfffffd80658272c8 estcpu=36, cpticks=0, pctcpu=0.0, user=0, sys=0, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 14610 491778 22462 0 2 0x8000002 ifconfig 79917 162968 65073 0 2 0x8000000 syz-executor 79917 1089 65073 0 3 0xc000080 kqread syz-executor 22462 123314 95249 0 3 0x810008a sigsusp sh 71858 492915 61208 0 2 0x8000000 syz-executor *71858 216525 61208 0 7 0xc000000 syz-executor 60787 476925 47940 0 3 0x8000080 nanoslp syz-executor 60787 361209 47940 0 3 0xc000080 nanoslp syz-executor 60787 306380 47940 0 2 0xc000000 syz-executor 60787 509655 47940 0 3 0xc000080 fsleep syz-executor 13993 102797 30257 0 2 0x8000000 syz-executor 13993 288030 30257 0 3 0xc000080 fsleep syz-executor 61458 472598 55547 0 2 0x8000000 syz-executor 61458 224065 55547 0 2 0xc000000 syz-executor 27061 303744 19993 -1 2 0x8000010 syz-executor 27061 460241 19993 -1 3 0xc000090 kqsel syz-executor 27061 330841 19993 -1 3 0xc000090 fsleep syz-executor 95249 231426 58764 0 3 0x8000082 wait syz-executor 30257 326951 58764 0 3 0x8000082 nanoslp syz-executor 55547 180555 58764 0 3 0x8000082 nanoslp syz-executor 61208 165972 58764 0 3 0x8000082 nanoslp syz-executor 47940 343159 58764 0 3 0x8000082 nanoslp syz-executor 4419 470506 58764 0 2 0x8000002 syz-executor 65073 322275 58764 0 3 0x8000082 nanoslp syz-executor 19993 347923 58764 0 3 0x8000082 nanoslp syz-executor 65996 324532 0 0 3 0x14200 bored sosplice 58764 165425 36147 0 2 0x8000002 syz-executor 36147 31865 14334 0 3 0x810008a sigsusp ksh 14334 210984 39850 0 3 0x18000098 kqread sshd-session 39850 404231 33845 0 3 0x18000092 kqread sshd-session 57053 458305 1 0 3 0x18100083 ttyin getty 33845 19943 1 0 3 0x18000088 kqread sshd 31338 203335 24999 73 2 0x19100010 syslogd 24999 518038 1 0 3 0x18100082 sbwait syslogd 24142 225472 1 0 3 0x18100080 kqread resolvd 1232 311218 33930 77 3 0x18100092 kqread dhcpleased 92638 86540 33930 77 3 0x18100092 kqread dhcpleased 33930 524252 1 0 3 0x18000080 kqread dhcpleased 60216 144323 0 0 3 0x14200 bored smr 43288 342804 0 0 2 0x14200 zerothread 31328 257367 0 0 3 0x14200 aiodoned aiodoned 34454 290572 0 0 3 0x14200 syncer update 33124 48192 0 0 3 0x14200 cleaner cleaner 97177 456599 0 0 3 0x14200 reaper reaper 72799 413298 0 0 3 0x14200 pgdaemon pagedaemon 71288 187116 0 0 3 0x14200 bored viomb 55945 346103 0 0 3 0x40014200 acpi0 acpi0 60618 511882 0 0 3 0x14200 bored softnet3 6543 239593 0 0 3 0x14200 bored softnet2 72639 347726 0 0 3 0x14200 bored softnet1 50358 139758 0 0 3 0x14200 bored softnet0 94434 356539 0 0 3 0x14200 bored systqmp 78520 153547 0 0 3 0x14200 bored systq 58994 106329 0 0 3 0x40014200 tmoslp softclock 73758 9514 0 0 3 0x40014200 idle0 1 205574 0 0 3 0x8000082 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 10189 10101K 10551K 166960K 12249 0 pcb 17 16K 18K 166960K 144 0 rtable 204 7K 8K 166960K 1102 0 pf 33 13K 17K 166960K 108 0 ifaddr 40 7K 7K 166960K 146 0 ifgroup 52 2K 2K 166960K 160 0 sysctl 0 0K 0K 166960K 1 0 counters 31 17K 17K 166960K 58 0 ioctlops 0 0K 4K 166960K 135 0 iov 0 0K 12K 166960K 57 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1462 92K 92K 166960K 2286 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 9K 166960K 16 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 0K 166960K 137 0 dirhash 12 2K 2K 166960K 21 0 ACPI 1697 195K 286K 166960K 12548 0 file desc 18 65K 97K 166960K 807 0 sigio 0 0K 0K 166960K 5 0 proc 58 59K 124K 166960K 1186 0 subproc 104 6K 6K 166960K 416 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 58 0 in_multi 88 6K 7K 166960K 372 0 ether_multi 1 0K 0K 166960K 1 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 109 493K 493K 166960K 109 0 exec 0 0K 1K 166960K 694 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 219 72K 107K 166960K 7426 0 UVM aobj 56 2K 4K 166960K 57 0 pinsyscall 39 78K 96K 166960K 2430 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 21 0 NDP 12 0K 2K 166960K 101 0 temp 75 6812K 6876K 166960K 11622 0 kqueue 13 20K 29K 166960K 94 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 120 149 0 146 2 0 2 2 0 8 1 rtentry 112 377 0 286 4 0 4 4 0 8 1 unpcb 144 542 0 521 4 0 4 4 0 8 3 syncache 336 4 0 4 1 0 1 1 0 8 1 tcpcb 808 191 0 187 8 0 8 8 0 8 7 arp 88 66 0 50 1 0 1 1 0 8 0 ipq 40 3 0 1 1 0 1 1 0 8 0 ipqe 40 47 0 45 1 0 1 1 0 8 0 inpcb 336 814 0 805 15 6 9 15 0 8 7 nd6 104 96 0 74 1 0 1 1 0 8 0 pkpcb 40 1 0 1 1 0 1 1 0 8 1 kcovpl 48 32 0 24 1 0 1 1 0 8 0 ppxss 1072 2 0 1 1 0 1 1 0 8 0 pfosfp 40 1 0 0 1 0 1 1 0 8 0 pfosfpen 112 1 0 0 1 0 1 1 0 8 0 pfrktable 1344 4 0 2 1 0 1 1 0 8 0 pfanchor 1288 1 0 0 1 0 1 1 0 8 0 pftag 88 1 0 1 1 0 1 1 0 8 1 pfstitem 24 6 0 4 1 0 1 1 0 8 0 pfstkey 128 6 0 0 1 0 1 1 0 8 0 pfstate 344 3 0 2 1 0 1 1 0 8 0 pfrule 1344 4 0 3 1 0 1 1 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 1525 0 1118 29 0 29 29 0 8 3 art_table 32 1526 0 1118 4 0 4 4 0 8 0 art_node 16 374 0 293 1 0 1 1 0 8 0 sysvmsgpl 40 2 0 0 1 0 1 1 0 8 0 semupl 112 1 0 1 1 0 1 1 0 8 1 semapl 112 135 0 125 1 0 1 1 0 8 0 shmpl 112 54 0 1 2 0 2 2 0 8 0 dirhash 1024 23 0 6 3 0 3 3 0 8 0 dino2pl 256 2358 0 817 97 0 97 97 0 8 0 ffsino 240 2358 0 817 91 0 91 91 0 8 0 nchpl 144 3092 0 1380 64 0 64 64 0 8 0 uvmvnodes 80 3151 0 0 65 0 65 65 0 8 0 vnodes 216 3151 0 0 176 0 176 176 0 8 0 vnodes: pool(0xffffffff834bff48:vnodes): page inconsistency: page 0x0; at page head addr 0xfffffd806b0bbf90 (p 0xfffffd806b0bb000) namei 1024 13365 0 13363 2 0 2 2 0 8 1 vcpupl 3904 4 0 1 1 0 1 1 0 8 0 vmpool 664 12 0 9 1 0 1 1 0 8 0 pfiaddrpl 120 1 0 0 1 0 1 1 0 8 0 kstatmem 264 78 0 54 2 0 2 2 0 8 0 scsiplug 72 1 0 1 1 0 1 1 0 8 1 scxspl 216 19101 0 19101 8 0 8 8 1 8 8 plimitpl 152 170 0 154 1 0 1 1 0 8 0 sigapl 424 1057 0 1010 8 0 8 8 0 8 2 futexpl 64 7595 0 7592 1 0 1 1 0 8 0 knotepl 120 31881 0 31834 10 0 10 10 0 8 8 kqueuepl 184 214 0 203 4 0 4 4 0 8 3 pipepl 288 244 0 217 3 0 3 3 0 8 0 fdescpl 432 1020 0 990 5 0 5 5 0 8 1 filepl 120 6323 0 6074 14 0 14 14 0 8 5 lockfpl 104 281 0 279 2 0 2 2 0 8 1 lockfspl 48 133 0 131 1 0 1 1 0 8 0 sessionpl 144 45 0 37 1 0 1 1 0 8 0 pgrppl 48 82 0 66 1 0 1 1 0 8 0 ucredpl 104 882 0 870 1 0 1 1 0 8 0 zombiepl 144 1010 0 1010 1 0 1 1 0 8 1 processpl 1088 1057 0 1010 5 0 5 5 0 8 0 procpl 648 1566 0 1510 8 0 8 8 0 8 1 sosppl 168 2 0 2 1 0 1 1 0 8 1 sockpl 504 1509 0 1476 27 14 13 26 0 8 8 mcl64k 65536 4 0 4 1 0 1 1 0 8 1 mcl9k 9216 1 0 1 1 0 1 1 0 8 1 mcl8k 8192 18 0 18 1 0 1 1 0 8 1 mcl4k 4096 4 0 4 1 0 1 1 0 8 1 mcl2k 2048 6414 0 6321 26 6 20 26 0 8 7 mtagpl 96 15 0 15 1 0 1 1 0 8 1 mbufpl 256 12738 0 12554 26 5 21 26 0 8 8 bufpl 280 5888 0 91 415 0 415 415 0 8 0 anonpl 24 200705 0 197398 50 0 50 50 0 187 25 amapchunkpl 152 24562 0 24097 46 0 46 46 0 158 28 amappl16 200 4000 0 3985 14 5 9 14 0 8 8 amappl15 192 28 0 28 1 0 1 1 0 8 1 amappl14 184 151 0 141 1 0 1 1 0 8 0 amappl13 176 53 0 53 1 0 1 1 0 8 1 amappl12 168 2010 0 1980 2 0 2 2 0 8 0 amappl11 160 77 0 67 1 0 1 1 0 8 0 amappl10 152 29 0 29 1 0 1 1 0 8 1 amappl9 144 139 0 139 1 0 1 1 0 8 1 amappl8 136 18 0 17 1 0 1 1 0 8 0 amappl7 128 146 0 136 1 0 1 1 0 8 0 amappl6 120 395 0 393 1 0 1 1 0 8 0 amappl5 112 239 0 229 1 0 1 1 0 8 0 amappl4 104 367 0 350 1 0 1 1 0 8 0 amappl3 96 4635 0 4530 4 0 4 4 0 8 1 amappl2 88 942 0 884 2 0 2 2 0 8 0 amappl1 80 10824 0 10287 13 0 13 13 0 8 1 amappl 88 6885 0 6722 5 0 5 5 0 92 1 dma65536 65536 1 0 1 1 0 1 1 0 8 1 dma4096 4096 1 0 1 1 0 1 1 0 8 1 dma1024 1024 1 0 0 1 0 1 1 0 8 0 dma256 256 6 0 6 1 0 1 1 0 8 1 dma128 128 253 0 253 1 0 1 1 0 8 1 dma64 64 6 0 6 1 0 1 1 0 8 1 dma32 32 7 0 7 1 0 1 1 0 8 1 dma16 16 18 0 17 1 0 1 1 0 8 0 aobjpl 72 56 0 1 1 0 1 1 0 8 0 uaddrrnd 24 1032 0 999 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 1032 0 999 1 0 1 1 0 8 0 vmmpekpl 168 9924 0 9870 3 0 3 3 0 8 0 vmmpepl 168 69962 0 68238 90 0 90 90 0 357 13 vmsppl 344 1031 0 999 4 0 4 4 0 8 0 rwobjpl 24 25769 0 21707 25 0 25 25 0 8 0 pdppl 4096 2070 0 2001 129 58 71 82 0 8 2 pvpl 32 522114 0 512243 225 0 225 225 0 265 141 pmappl 216 1031 0 999 3 0 3 3 0 8 1 extentpl 40 56 0 38 1 0 1 1 0 8 0 phpool 112 470 0 89 12 0 12 12 0 8 0 ddb> machine ddbcpu 0 No such command ddb> trace checkalias(fffffd805b618e88,31700,0) at checkalias+0xb7 sys/kern/vfs_subr.c:564 cdevvp(31700,ffff80002a53afe0) at cdevvp+0xd2 sys/kern/vfs_subr.c:507 spec_open_clone(ffff80002a53b0b8) at spec_open_clone+0x1ee sys/kern/spec_vnops.c:711 spec_open(ffff80002a53b0b8) at spec_open+0x326 sys/kern/spec_vnops.c:148 VOP_OPEN(fffffd806ec2ec00,10001,fffffd807f7d76e8,ffff8000376256e8) at VOP_OPEN+0x82 sys/kern/vfs_vops.c:138 vn_open(ffff80002a53b308,10201,0) at vn_open+0x708 sys/kern/vfs_vnops.c:177 doopenat(ffff8000376256e8,ffffff9c,20000000,10200,0,ffff80002a53b4b0) at doopenat+0x31d sys/kern/vfs_syscalls.c:1123 syscall(ffff80002a53b560) at syscall+0x97e sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x51cbcf47bc0, count: -9 ddb> machine ddbcpu 1 No such command ddb> trace checkalias(fffffd805b618e88,31700,0) at checkalias+0xb7 sys/kern/vfs_subr.c:564 cdevvp(31700,ffff80002a53afe0) at cdevvp+0xd2 sys/kern/vfs_subr.c:507 spec_open_clone(ffff80002a53b0b8) at spec_open_clone+0x1ee sys/kern/spec_vnops.c:711 spec_open(ffff80002a53b0b8) at spec_open+0x326 sys/kern/spec_vnops.c:148 VOP_OPEN(fffffd806ec2ec00,10001,fffffd807f7d76e8,ffff8000376256e8) at VOP_OPEN+0x82 sys/kern/vfs_vops.c:138 vn_open(ffff80002a53b308,10201,0) at vn_open+0x708 sys/kern/vfs_vnops.c:177 doopenat(ffff8000376256e8,ffffff9c,20000000,10200,0,ffff80002a53b4b0) at doopenat+0x31d sys/kern/vfs_syscalls.c:1123 syscall(ffff80002a53b560) at syscall+0x97e sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x51cbcf47bc0, count: -9