uvm_fault(0xfffffd806aec0ef0, 0x608, 0, 2) -> e kernel: page fault trap, code=0 Stopped at pppacopen+0x19f: movq %r13,0x608 TID PID UID PRFLAGS PFLAGS CPU COMMAND *207694 6860 0 0 0x4000000 0 syz-executor.2 pppacopen(86338,1,2000,ffff80002165cd20) at pppacopen+0x19f sys/net/if_pppx.c:1020 spec_open(ffff800027f60d88) at spec_open+0x3d7 sys/kern/spec_vnops.c:157 VOP_OPEN(fffffd8071c2c7e8,1,fffffd807f7d8720,ffff80002165cd20) at VOP_OPEN+0x6c sys/kern/vfs_vops.c:138 vn_open(ffff800027f60fd8,1,0) at vn_open+0x467 sys/kern/vfs_vnops.c:183 doopenat(ffff80002165cd20,ffffff9c,20000000,0,0,ffff800027f611c0) at doopenat+0x26a sys/kern/vfs_syscalls.c:1128 syscall(ffff800027f61230) at syscall+0x44e sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xb9460148060, count: 8 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(0xfffffd806aec0ef0, 0x608, 0, 2) -> e ddb> trace pppacopen(86338,1,2000,ffff80002165cd20) at pppacopen+0x19f sys/net/if_pppx.c:1020 spec_open(ffff800027f60d88) at spec_open+0x3d7 sys/kern/spec_vnops.c:157 VOP_OPEN(fffffd8071c2c7e8,1,fffffd807f7d8720,ffff80002165cd20) at VOP_OPEN+0x6c sys/kern/vfs_vops.c:138 vn_open(ffff800027f60fd8,1,0) at vn_open+0x467 sys/kern/vfs_vnops.c:183 doopenat(ffff80002165cd20,ffffff9c,20000000,0,0,ffff800027f611c0) at doopenat+0x26a sys/kern/vfs_syscalls.c:1128 syscall(ffff800027f61230) at syscall+0x44e sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xb9460148060, count: -7 ddb> show registers rdi 0xffff800024b6c000 rsi 0x4d8 rbp 0xffff800027f60d00 rbx 0 rdx 0xffff800024b6c000 rcx 0x4d7 rax 0xffffffff81540f4f pppacopen+0x19f r8 0x6b0 r9 0xfffffd807f7d8720 r10 0x751f9d2da865a33a r11 0xc7ca955072816d7b r12 0xfffffd8071c2c7e8 r13 0 r14 0x86338 acpi_pdirpa+0x721a0 r15 0xffff800027f60d88 rip 0xffffffff81540f4f pppacopen+0x19f cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff800027f60cb0 ss 0 pppacopen+0x19f: movq %r13,0x608 ddb> show proc PROC (syz-executor.2) pid=207694 stat=onproc flags process=0 proc=4000000 pri=17, usrpri=81, nice=20 forw=0xffffffffffffffff, list=0xffff8000ffff82a8,0xffffffff828ce7e0 process=0xffff80002166e7f0 user=0xffff800027f5c000, vmspace=0xfffffd806aec0ef0 estcpu=36, cpticks=1, pctcpu=0.0 user=0, sys=1, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 6860 373534 16914 0 2 0 syz-executor.2 * 6860 207694 16914 0 7 0x4000000 syz-executor.2 27164 238681 58231 0 3 0x82 nanoslp syz-executor.3 22611 88798 58231 0 2 0x2 syz-executor.0 16914 79785 58231 0 2 0x482 syz-executor.2 32907 171911 58231 0 2 0x482 syz-executor.1 57131 497958 0 0 3 0x14200 bored sosplice 58231 102676 79260 0 3 0x82 kqread syz-fuzzer 58231 433333 79260 0 2 0x4000482 syz-fuzzer 58231 297480 79260 0 3 0x4000082 thrsleep syz-fuzzer 58231 334926 79260 0 3 0x4000082 thrsleep syz-fuzzer 58231 69276 79260 0 3 0x4000082 thrsleep syz-fuzzer 58231 124576 79260 0 3 0x4000082 thrsleep syz-fuzzer 79260 68227 86422 0 3 0x10008a sigsusp ksh 86422 254411 16152 0 3 0x9a poll sshd 68318 33512 1 0 3 0x100083 ttyin getty 16152 418300 1 0 3 0x88 poll sshd 68258 497206 66728 73 3 0x100090 kqread syslogd 66728 475128 1 0 3 0x100082 netio syslogd 1462 446339 1 0 3 0x100080 kqread resolvd 51073 249071 86408 77 3 0x100092 kqread dhcpleased 35512 485199 86408 77 3 0x100092 kqread dhcpleased 86408 55982 1 0 3 0x80 kqread dhcpleased 72133 53688 0 0 3 0x14200 bored smr 98092 446918 0 0 2 0x14200 zerothread 57037 95223 0 0 3 0x14200 aiodoned aiodoned 16350 39617 0 0 3 0x14200 syncer update 46552 361545 0 0 3 0x14200 cleaner cleaner 99802 104632 0 0 3 0x14200 reaper reaper 86713 264939 0 0 3 0x14200 pgdaemon pagedaemon 21181 499607 0 0 3 0x14200 bored viomb 97227 156491 0 0 3 0x40014200 acpi0 acpi0 77348 405407 0 0 3 0x14200 bored softnet 52762 35475 0 0 3 0x14200 bored systqmp 52435 181089 0 0 3 0x14200 bored systq 52970 46985 0 0 3 0x40014200 bored softclock 84552 69712 0 0 3 0x40014200 idle0 1 368757 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 10136 6380K 7423K 78643K 12736 0 pcb 13 8K 8K 78643K 112 0 rtable 71 11K 17K 78643K 684 0 ifaddr 25 8K 14K 78643K 158 0 counters 19 16K 16K 78643K 32 0 ioctlops 0 0K 4K 78643K 132 0 iov 0 0K 0K 78643K 4 0 mount 1 1K 1K 78643K 1 0 log 0 0K 0K 78643K 5 0 vnodes 1229 77K 78K 78643K 1938 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 17K 78643K 23 0 VM map 2 0K 0K 78643K 2 0 sem 9 0K 1K 78643K 15 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1697 195K 286K 78643K 12598 0 file desc 7 21K 49K 78643K 1937 0 sigio 0 0K 0K 78643K 22 0 proc 57 55K 71K 78643K 663 0 subproc 52 3K 3K 78643K 169 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 0 0K 0K 78643K 114 0 in_multi 11 0K 3K 78643K 166 0 ether_multi 1 0K 0K 78643K 9 0 mrt 0 0K 0K 78643K 17 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 67 307K 307K 78643K 67 0 exec 0 0K 2K 78643K 704 0 pfkey data 0 0K 1K 78643K 4 0 tdb 3 0K 0K 78643K 3 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 198 46K 47K 78643K 23102 0 UVM aobj 27 7K 7K 78643K 27 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 112 0 NDP 3 0K 1K 78643K 42 0 temp 75 4189K 4253K 78643K 8830 0 kqueue 10 14K 20K 78643K 110 0 SYN cache 2 16K 16K 78643K 2 0 ddb> show all pools Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle rtpcb 120 109 0 106 1 0 1 1 0 8 0 rtentry 112 171 0 149 2 0 2 2 0 8 1 unpcb 136 436 0 423 1 0 1 1 0 8 0 syncache 296 8 0 8 2 2 0 1 0 8 0 tcpqe 32 74 0 74 3 3 0 1 0 8 0 tcpcb 736 228 0 224 7 6 1 3 0 8 0 arp 88 29 0 27 1 0 1 1 0 8 0 ipq 40 17 0 16 1 0 1 1 0 8 0 ipqe 40 49 0 48 1 0 1 1 0 8 0 inpcb 304 823 0 816 3 1 2 2 0 8 1 rttmr 72 4 0 4 1 1 0 1 0 8 0 ip6q 72 8 0 7 2 1 1 1 0 8 0 ip6af 40 22 0 21 2 1 1 1 0 8 0 nd6 48 39 0 39 1 0 1 1 0 8 1 pkpcb 40 20 0 20 2 1 1 1 0 8 1 kcovpl 48 13 0 9 1 0 1 1 0 8 0 pfstscr 40 7 0 6 1 0 1 1 0 8 0 pfrktable 1344 53 0 52 2 1 1 1 0 8 0 pftag 88 4 0 4 1 1 0 1 0 8 0 pfstitem 24 2 0 0 1 0 1 1 0 8 0 pfstkey 112 14 0 12 1 0 1 1 0 8 0 pfstate 320 7 0 6 1 0 1 1 0 8 0 pfrule 1360 46 0 42 1 0 1 1 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 705 0 608 18 3 15 18 0 8 8 art_table 32 706 0 608 3 0 3 3 0 8 2 art_node 16 170 0 150 1 0 1 1 0 8 0 sysvmsgpl 40 7 0 7 1 1 0 1 0 8 0 semupl 112 7 0 7 2 2 0 1 0 8 0 semapl 112 7 0 0 1 0 1 1 0 8 0 shmpl 112 24 0 0 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 3818 0 2417 89 0 89 89 0 8 0 ffsino 240 3818 0 2417 84 0 84 84 0 8 0 nchpl 144 6100 0 4501 61 0 61 61 0 8 0 uvmvnodes 80 4321 0 0 89 0 89 89 0 8 0 vnodes 224 4321 0 0 255 0 255 255 0 8 0 namei 1024 16279 0 16278 1 0 1 1 0 8 0 vcpupl 1984 5 0 0 1 0 1 1 0 8 0 vmpool 528 13 0 8 1 0 1 1 0 8 0 pfiaddrpl 120 16 0 16 2 2 0 1 0 8 0 scsiplug 72 3 0 3 1 0 1 1 0 8 1 scxspl 216 17399 0 17399 10 9 1 8 0 8 1 plimitpl 152 69 0 59 1 0 1 1 0 8 0 sigapl 424 2120 0 2088 6 1 5 5 0 8 1 futexpl 64 10724 0 10724 1 0 1 1 0 8 1 knotepl 112 662 0 612 2 0 2 2 0 8 0 kqueuepl 184 192 0 186 1 0 1 1 0 8 0 pipepl 304 176 0 160 2 0 2 2 0 8 0 fdescpl 432 2106 0 2088 3 0 3 3 0 8 0 filepl 120 6571 0 6425 6 1 5 6 0 8 0 lockfpl 104 232 0 230 1 0 1 1 0 8 0 lockfspl 48 101 0 99 1 0 1 1 0 8 0 sessionpl 144 28 0 16 1 0 1 1 0 8 0 pgrppl 48 35 0 23 1 0 1 1 0 8 0 ucredpl 96 935 0 925 1 0 1 1 0 8 0 zombiepl 144 2088 0 2086 1 0 1 1 0 8 0 processpl 1000 2120 0 2086 5 0 5 5 0 8 0 procpl 672 4085 0 4045 6 2 4 5 0 8 0 sosppl 168 26 0 26 4 4 0 1 0 8 0 sockpl 448 1388 0 1365 8 4 4 5 0 8 1 mcl64k 65536 84 0 84 4 4 0 1 0 8 0 mcl16k 16384 8 0 8 2 2 0 1 0 8 0 mcl12k 12288 28 0 28 2 2 0 1 0 8 0 mcl8k 8192 30 0 30 5 4 1 1 0 8 1 mcl4k 4096 148 0 148 4 3 1 1 0 8 1 mcl2k2 2112 7 0 7 1 1 0 1 0 8 0 mcl2k 2048 20232 0 20188 23 16 7 15 0 8 1 mtagpl 96 192 0 192 6 1 5 5 0 8 5 mbufpl 256 56503 0 56339 41 17 24 38 0 8 8 bufpl 288 5756 0 135 402 0 402 402 0 8 0 anonpl 24 497017 0 489999 56 6 50 50 0 188 2 amapchunkpl 152 55197 0 54771 25 4 21 22 0 158 2 amappl16 200 4078 0 3920 13 3 10 11 0 8 1 amappl15 192 3 0 2 1 0 1 1 0 8 0 amappl14 184 15 0 13 1 0 1 1 0 8 0 amappl13 176 1313 0 1312 1 0 1 1 0 8 0 amappl12 168 15 0 12 1 0 1 1 0 8 0 amappl11 160 112 0 99 1 0 1 1 0 8 0 amappl10 152 51 0 45 1 0 1 1 0 8 0 amappl9 144 523 0 517 1 0 1 1 0 8 0 amappl8 136 899 0 865 2 0 2 2 0 8 0 amappl7 128 510 0 503 1 0 1 1 0 8 0 amappl6 120 255 0 240 1 0 1 1 0 8 0 amappl5 112 1919 0 1904 1 0 1 1 0 8 0 amappl4 104 859 0 837 1 0 1 1 0 8 0 amappl3 96 218 0 201 1 0 1 1 0 8 0 amappl2 88 1650 0 1605 2 0 2 2 0 8 0 amappl1 80 37811 0 37383 13 3 10 12 0 8 0 amappl 88 22644 0 22496 5 0 5 5 0 92 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 26 0 0 1 0 1 1 0 8 0 uaddrrnd 24 2119 0 2096 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 2119 0 2096 1 0 1 1 0 8 0 vmmpekpl 168 14768 0 14739 2 0 2 2 0 8 0 vmmpepl 168 187994 0 186590 88 6 82 82 0 357 12 vmsppl 272 2118 0 2096 3 1 2 2 0 8 0 rwobjpl 24 46446 0 41209 32 0 32 32 0 8 0 pdppl 4096 4244 0 4197 85 32 53 56 0 8 6 pvpl 32 987710 0 977510 150 54 96 137 0 265 1 pmappl 216 2118 0 2096 2 0 2 2 0 8 0 extentpl 40 57 0 38 1 0 1 1 0 8 0 phpool 112 784 0 94 21 0 21 21 0 8 0 ddb> machine ddbcpu 0 No such command ddb> trace pppacopen(86338,1,2000,ffff80002165cd20) at pppacopen+0x19f sys/net/if_pppx.c:1020 spec_open(ffff800027f60d88) at spec_open+0x3d7 sys/kern/spec_vnops.c:157 VOP_OPEN(fffffd8071c2c7e8,1,fffffd807f7d8720,ffff80002165cd20) at VOP_OPEN+0x6c sys/kern/vfs_vops.c:138 vn_open(ffff800027f60fd8,1,0) at vn_open+0x467 sys/kern/vfs_vnops.c:183 doopenat(ffff80002165cd20,ffffff9c,20000000,0,0,ffff800027f611c0) at doopenat+0x26a sys/kern/vfs_syscalls.c:1128 syscall(ffff800027f61230) at syscall+0x44e sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xb9460148060, count: -7 ddb> machine ddbcpu 1 No such command ddb> trace pppacopen(86338,1,2000,ffff80002165cd20) at pppacopen+0x19f sys/net/if_pppx.c:1020 spec_open(ffff800027f60d88) at spec_open+0x3d7 sys/kern/spec_vnops.c:157 VOP_OPEN(fffffd8071c2c7e8,1,fffffd807f7d8720,ffff80002165cd20) at VOP_OPEN+0x6c sys/kern/vfs_vops.c:138 vn_open(ffff800027f60fd8,1,0) at vn_open+0x467 sys/kern/vfs_vnops.c:183 doopenat(ffff80002165cd20,ffffff9c,20000000,0,0,ffff800027f611c0) at doopenat+0x26a sys/kern/vfs_syscalls.c:1128 syscall(ffff800027f61230) at syscall+0x44e sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xb9460148060, count: -7