uvm_fault(0xfffffd806aee8bc0, 0x608, 0, 2) -> e kernel: page fault trap, code=0 Stopped at pppacopen+0x19f: movq %r13,0x608 TID PID UID PRFLAGS PFLAGS CPU COMMAND *269197 19755 0 0 0x4000000 0 syz-executor.0 pppacopen(4086331,1,2000,ffff800024b4cfd0) at pppacopen+0x19f sys/net/if_pppx.c:1020 spec_open(ffff800027fd0fe8) at spec_open+0x3d7 sys/kern/spec_vnops.c:157 VOP_OPEN(fffffd8069be0bc8,1,fffffd807f7d86c0,ffff800024b4cfd0) at VOP_OPEN+0x6c sys/kern/vfs_vops.c:138 vn_open(ffff800027fd1238,1,0) at vn_open+0x467 sys/kern/vfs_vnops.c:183 doopenat(ffff800024b4cfd0,ffffff9c,20000100,0,0,ffff800027fd1420) at doopenat+0x26a sys/kern/vfs_syscalls.c:1128 syscall(ffff800027fd1490) at syscall+0x44e sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xbdce37e1090, 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(0xfffffd806aee8bc0, 0x608, 0, 2) -> e ddb> trace pppacopen(4086331,1,2000,ffff800024b4cfd0) at pppacopen+0x19f sys/net/if_pppx.c:1020 spec_open(ffff800027fd0fe8) at spec_open+0x3d7 sys/kern/spec_vnops.c:157 VOP_OPEN(fffffd8069be0bc8,1,fffffd807f7d86c0,ffff800024b4cfd0) at VOP_OPEN+0x6c sys/kern/vfs_vops.c:138 vn_open(ffff800027fd1238,1,0) at vn_open+0x467 sys/kern/vfs_vnops.c:183 doopenat(ffff800024b4cfd0,ffffff9c,20000100,0,0,ffff800027fd1420) at doopenat+0x26a sys/kern/vfs_syscalls.c:1128 syscall(ffff800027fd1490) at syscall+0x44e sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xbdce37e1090, count: -7 ddb> show registers rdi 0xffff800024b54000 rsi 0x41b rbp 0xffff800027fd0f60 rbx 0 rdx 0xffff800024b54000 rcx 0x41a rax 0xffffffff81540f4f pppacopen+0x19f r8 0x6b0 r9 0xfffffd807f7d86c0 r10 0x5ec4131fb5d3f131 r11 0xccba780ffb0b8d7f r12 0xfffffd8069be0bc8 r13 0 r14 0x4086331 __kernel_phys_end+0x1686331 r15 0xffff800027fd0fe8 rip 0xffffffff81540f4f pppacopen+0x19f cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff800027fd0f10 ss 0x10 pppacopen+0x19f: movq %r13,0x608 ddb> show proc PROC (syz-executor.0) pid=269197 stat=onproc flags process=0 proc=4000000 pri=32, usrpri=74, nice=20 forw=0xffffffffffffffff, list=0xffff800024b4d510,0xffffffff828ce7e0 process=0xffff80002166fb78 user=0xffff800027fcc000, vmspace=0xfffffd806aee8bc0 estcpu=36, cpticks=1, pctcpu=0.0 user=0, sys=1, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 19755 50503 69859 0 2 0 syz-executor.0 *19755 269197 69859 0 7 0x4000000 syz-executor.0 76697 428670 81734 0 2 0 syz-executor.1 76697 509604 81734 0 3 0x4000080 fsleep syz-executor.1 33614 298606 0 0 3 0x14280 nfsidl nfsio 5210 261483 0 0 3 0x14280 nfsidl nfsio 83345 378531 0 0 3 0x14280 nfsidl nfsio 93464 376557 0 0 3 0x14280 nfsidl nfsio 15183 103482 0 0 3 0x14280 nfsidl nfsio 73771 88792 0 0 3 0x14280 nfsidl nfsio 68840 364788 0 0 3 0x14280 nfsidl nfsio 16398 129612 0 0 3 0x14280 nfsidl nfsio 35075 448702 0 0 3 0x14280 nfsidl nfsio 82997 85589 0 0 3 0x14280 nfsidl nfsio 68089 127691 0 0 3 0x14280 nfsidl nfsio 6130 55826 0 0 3 0x14280 nfsidl nfsio 38737 355734 0 0 3 0x14280 nfsidl nfsio 84578 409097 0 0 3 0x14280 nfsidl nfsio 9807 205082 0 0 3 0x14280 nfsidl nfsio 91054 63340 0 0 3 0x14280 nfsidl nfsio 83107 433082 0 0 3 0x14280 nfsidl nfsio 13600 24957 0 0 3 0x14280 nfsidl nfsio 80724 368760 0 0 3 0x14280 nfsidl nfsio 16543 445955 0 0 3 0x14280 nfsidl nfsio 82430 91328 0 0 3 0x14200 bored sosplice 60467 363185 15277 0 2 0x2 syz-executor.2 81734 330653 15277 0 3 0x82 nanoslp syz-executor.1 69859 348869 15277 0 3 0x82 nanoslp syz-executor.0 94628 429190 15277 0 3 0x82 nanoslp syz-executor.3 15277 213793 46385 0 3 0x82 thrsleep syz-fuzzer 15277 511072 46385 0 3 0x4000082 nanoslp syz-fuzzer 15277 134484 46385 0 3 0x4000082 thrsleep syz-fuzzer 15277 199866 46385 0 3 0x4000082 thrsleep syz-fuzzer 15277 200924 46385 0 3 0x4000082 thrsleep syz-fuzzer 15277 30126 46385 0 3 0x4000082 kqread syz-fuzzer 46385 501150 42747 0 3 0x10008a sigsusp ksh 42747 256464 26505 0 3 0x9a poll sshd 77260 224394 1 0 3 0x100083 ttyin getty 26505 314992 1 0 3 0x88 poll sshd 20060 4115 76832 73 3 0x100090 kqread syslogd 76832 93481 1 0 3 0x100082 netio syslogd 47445 181998 1 0 3 0x100080 kqread resolvd 75913 165091 34196 77 3 0x100092 kqread dhcpleased 68847 266716 34196 77 3 0x100092 kqread dhcpleased 34196 200818 1 0 3 0x80 kqread dhcpleased 78036 454737 0 0 3 0x14200 bored smr 42894 365715 0 0 2 0x14200 zerothread 50397 23239 0 0 3 0x14200 aiodoned aiodoned 49090 291586 0 0 3 0x14200 syncer update 99900 460162 0 0 3 0x14200 cleaner cleaner 13670 282272 0 0 3 0x14200 reaper reaper 53238 172737 0 0 3 0x14200 pgdaemon pagedaemon 65648 299177 0 0 3 0x14200 bored viomb 56614 203702 0 0 3 0x40014200 acpi0 acpi0 30506 154984 0 0 3 0x14200 bored softnet 57072 203703 0 0 3 0x14200 bored systqmp 63204 89809 0 0 3 0x14200 bored systq 14953 475211 0 0 3 0x40014200 bored softclock 36453 122425 0 0 3 0x40014200 idle0 1 367307 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 10151 6457K 6979K 78643K 12451 0 pcb 13 8K 8K 78643K 98 0 rtable 132 4K 5K 78643K 285 0 ifaddr 55 12K 13K 78643K 91 0 counters 23 16K 17K 78643K 30 0 ioctlops 0 0K 4K 78643K 90 0 iov 0 0K 2K 78643K 20 0 mount 1 1K 1K 78643K 1 0 log 0 0K 0K 78643K 5 0 vnodes 1231 77K 78K 78643K 1602 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 5K 78643K 9 0 VM map 2 0K 0K 78643K 2 0 sem 12 1K 1K 78643K 12 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1697 195K 286K 78643K 12598 0 file desc 8 25K 41K 78643K 1300 0 sigio 0 0K 0K 78643K 24 0 proc 58 55K 71K 78643K 348 0 subproc 52 3K 3K 78643K 52 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 0 0K 0K 78643K 45 0 in_multi 52 3K 3K 78643K 82 0 ether_multi 1 0K 0K 78643K 20 0 mrt 0 0K 0K 78643K 18 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 61 281K 281K 78643K 61 0 exec 0 0K 2K 78643K 530 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 202 204K 205K 78643K 16464 0 UVM aobj 10 2K 2K 78643K 10 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 83 0 NDP 7 0K 1K 78643K 22 0 temp 93 4193K 4259K 78643K 6416 0 kqueue 10 14K 20K 78643K 117 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 25 0 22 1 0 1 1 0 8 0 rtentry 112 74 0 17 2 0 2 2 0 8 0 unpcb 136 487 0 474 2 1 1 2 0 8 0 syncache 296 4 0 4 1 1 0 1 0 8 0 tcpcb 736 182 0 177 6 4 2 3 0 8 1 arp 88 10 0 0 1 0 1 1 0 8 0 inpcb 304 523 0 516 3 2 1 2 0 8 0 rttmr 72 6 0 6 1 0 1 1 0 8 1 nd6 48 13 0 1 1 0 1 1 0 8 0 pkpcb 40 4 0 4 1 1 0 1 0 8 0 kcovpl 48 4 0 0 1 0 1 1 0 8 0 pfstscr 40 34 0 32 1 0 1 1 0 8 0 pfrktable 1344 16 0 16 1 1 0 1 0 8 0 pftag 88 16 0 16 1 1 0 1 0 8 0 pfstitem 24 42 0 40 1 0 1 1 0 8 0 pfstkey 112 54 0 52 1 0 1 1 0 8 0 pfstate 320 27 0 26 1 0 1 1 0 8 0 pfrule 1360 16 0 16 1 1 0 1 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 288 0 52 18 0 18 18 0 8 1 art_table 32 289 0 52 3 0 3 3 0 8 0 art_node 16 73 0 24 1 0 1 1 0 8 0 semupl 112 5 0 5 1 1 0 1 0 8 0 semapl 112 10 0 0 1 0 1 1 0 8 0 shmpl 112 7 0 0 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 3047 0 1635 89 0 89 89 0 8 0 ffsino 240 3047 0 1635 84 0 84 84 0 8 0 nchpl 144 4698 0 3082 61 0 61 61 0 8 0 uvmvnodes 80 3364 0 0 69 0 69 69 0 8 0 vnodes 224 3364 0 0 198 0 198 198 0 8 0 namei 1024 11590 0 11590 1 0 1 1 0 8 1 vcpupl 1984 10 0 0 2 0 2 2 0 8 0 vmpool 528 10 0 0 1 0 1 1 0 8 0 scsiplug 72 10 0 10 1 1 0 1 0 8 0 scxspl 216 13604 0 13604 9 8 1 8 0 8 1 plimitpl 152 44 0 34 1 0 1 1 0 8 0 sigapl 424 1530 0 1477 7 0 7 7 0 8 0 futexpl 64 7924 0 7923 1 0 1 1 0 8 0 knotepl 112 492 0 442 2 0 2 2 0 8 0 kqueuepl 184 206 0 198 1 0 1 1 0 8 0 pipepl 304 134 0 118 2 0 2 2 0 8 0 fdescpl 432 1496 0 1477 3 0 3 3 0 8 0 filepl 120 4710 0 4562 6 1 5 6 0 8 0 lockfpl 104 90 0 88 1 0 1 1 0 8 0 lockfspl 48 46 0 44 1 0 1 1 0 8 0 sessionpl 144 19 0 7 1 0 1 1 0 8 0 pgrppl 48 27 0 15 1 0 1 1 0 8 0 ucredpl 96 462 0 452 1 0 1 1 0 8 0 zombiepl 144 1477 0 1476 1 0 1 1 0 8 0 processpl 1000 1530 0 1476 7 0 7 7 0 8 0 procpl 672 2932 0 2871 6 0 6 6 0 8 0 sosppl 168 4 0 4 1 1 0 1 0 8 0 sockpl 448 1039 0 1016 8 4 4 7 0 8 1 mcl64k 65536 4 0 4 1 1 0 1 0 8 0 mcl16k 16384 7 0 7 1 1 0 1 0 8 0 mcl12k 12288 46 0 46 2 1 1 1 0 8 1 mcl9k 9216 23 0 23 1 1 0 1 0 8 0 mcl8k 8192 24 0 24 2 2 0 1 0 8 0 mcl4k 4096 37 0 37 4 3 1 1 0 8 1 mcl2k 2048 15144 0 15107 13 5 8 9 0 8 2 mtagpl 96 170 0 3 6 1 5 5 0 8 0 mbufpl 256 41683 0 41133 36 0 36 36 0 8 0 bufpl 288 4950 0 135 344 0 344 344 0 8 0 anonpl 24 382850 0 375241 71 20 51 66 0 188 1 amapchunkpl 152 38838 0 38376 22 1 21 21 0 158 0 amappl16 200 4441 0 4284 24 15 9 20 0 8 0 amappl14 184 7 0 3 1 0 1 1 0 8 0 amappl13 176 354 0 350 1 0 1 1 0 8 0 amappl12 168 638 0 633 1 0 1 1 0 8 0 amappl11 160 41 0 31 1 0 1 1 0 8 0 amappl10 152 40 0 35 1 0 1 1 0 8 0 amappl9 144 469 0 466 1 0 1 1 0 8 0 amappl8 136 669 0 636 2 0 2 2 0 8 0 amappl7 128 386 0 377 1 0 1 1 0 8 0 amappl6 120 136 0 123 1 0 1 1 0 8 0 amappl5 112 484 0 472 1 0 1 1 0 8 0 amappl4 104 535 0 513 1 0 1 1 0 8 0 amappl3 96 1144 0 1121 1 0 1 1 0 8 0 amappl2 88 1277 0 1232 2 0 2 2 0 8 0 amappl1 80 27457 0 27013 12 1 11 12 0 8 0 amappl 88 16144 0 15998 4 0 4 4 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 9 0 0 1 0 1 1 0 8 0 uaddrrnd 24 1506 0 1477 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 1506 0 1477 1 0 1 1 0 8 0 vmmpekpl 168 11271 0 11238 2 0 2 2 0 8 0 vmmpepl 168 133571 0 132105 89 17 72 80 0 357 4 vmsppl 272 1505 0 1477 6 3 3 3 0 8 1 rwobjpl 24 35204 0 30936 26 0 26 26 0 8 0 pdppl 4096 3018 0 2964 76 18 58 58 0 8 4 pvpl 32 733462 0 723328 138 48 90 137 0 265 1 pmappl 216 1505 0 1477 2 0 2 2 0 8 0 extentpl 40 57 0 38 1 0 1 1 0 8 0 phpool 112 697 0 44 19 0 19 19 0 8 0 ddb> machine ddbcpu 0 No such command ddb> trace pppacopen(4086331,1,2000,ffff800024b4cfd0) at pppacopen+0x19f sys/net/if_pppx.c:1020 spec_open(ffff800027fd0fe8) at spec_open+0x3d7 sys/kern/spec_vnops.c:157 VOP_OPEN(fffffd8069be0bc8,1,fffffd807f7d86c0,ffff800024b4cfd0) at VOP_OPEN+0x6c sys/kern/vfs_vops.c:138 vn_open(ffff800027fd1238,1,0) at vn_open+0x467 sys/kern/vfs_vnops.c:183 doopenat(ffff800024b4cfd0,ffffff9c,20000100,0,0,ffff800027fd1420) at doopenat+0x26a sys/kern/vfs_syscalls.c:1128 syscall(ffff800027fd1490) at syscall+0x44e sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xbdce37e1090, count: -7 ddb> machine ddbcpu 1 No such command ddb> trace pppacopen(4086331,1,2000,ffff800024b4cfd0) at pppacopen+0x19f sys/net/if_pppx.c:1020 spec_open(ffff800027fd0fe8) at spec_open+0x3d7 sys/kern/spec_vnops.c:157 VOP_OPEN(fffffd8069be0bc8,1,fffffd807f7d86c0,ffff800024b4cfd0) at VOP_OPEN+0x6c sys/kern/vfs_vops.c:138 vn_open(ffff800027fd1238,1,0) at vn_open+0x467 sys/kern/vfs_vnops.c:183 doopenat(ffff800024b4cfd0,ffffff9c,20000100,0,0,ffff800027fd1420) at doopenat+0x26a sys/kern/vfs_syscalls.c:1128 syscall(ffff800027fd1490) at syscall+0x44e sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xbdce37e1090, count: -7