login: uvm_fault(0xfffffd806aed8560, 0x608, 0, 2) -> e kernel: page fault trap, code=0 Stopped at pppacopen+0x19f: movq %r13,0x608 TID PID UID PRFLAGS PFLAGS CPU COMMAND *140418 51341 0 0 0x4000000 0 syz-executor.0 pppacopen(4086331,1,2000,ffff8000265307e8) at pppacopen+0x19f sys/net/if_pppx.c:1020 spec_open(ffff800027f67268) at spec_open+0x3d7 sys/kern/spec_vnops.c:157 VOP_OPEN(fffffd8072533040,1,fffffd807f7d88a0,ffff8000265307e8) at VOP_OPEN+0x6c sys/kern/vfs_vops.c:138 vn_open(ffff800027f674b8,1,0) at vn_open+0x467 sys/kern/vfs_vnops.c:183 doopenat(ffff8000265307e8,ffffff9c,20000100,0,0,ffff800027f676a0) at doopenat+0x26a sys/kern/vfs_syscalls.c:1128 syscall(ffff800027f67710) at syscall+0x44e sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xe39236dfa0, 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(0xfffffd806aed8560, 0x608, 0, 2) -> e ddb> trace pppacopen(4086331,1,2000,ffff8000265307e8) at pppacopen+0x19f sys/net/if_pppx.c:1020 spec_open(ffff800027f67268) at spec_open+0x3d7 sys/kern/spec_vnops.c:157 VOP_OPEN(fffffd8072533040,1,fffffd807f7d88a0,ffff8000265307e8) at VOP_OPEN+0x6c sys/kern/vfs_vops.c:138 vn_open(ffff800027f674b8,1,0) at vn_open+0x467 sys/kern/vfs_vnops.c:183 doopenat(ffff8000265307e8,ffffff9c,20000100,0,0,ffff800027f676a0) at doopenat+0x26a sys/kern/vfs_syscalls.c:1128 syscall(ffff800027f67710) at syscall+0x44e sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xe39236dfa0, count: -7 ddb> show registers rdi 0xffff8000216da000 rsi 0x418 rbp 0xffff800027f671e0 rbx 0 rdx 0xffff8000216da000 rcx 0x417 rax 0xffffffff81540f4f pppacopen+0x19f r8 0x6b0 r9 0xfffffd807f7d88a0 r10 0x1b963bdf0f337fed r11 0x6ecafe7631722aa5 r12 0xfffffd8072533040 r13 0 r14 0x4086331 __kernel_phys_end+0x1686331 r15 0xffff800027f67268 rip 0xffffffff81540f4f pppacopen+0x19f cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff800027f67190 ss 0x10 pppacopen+0x19f: movq %r13,0x608 ddb> show proc PROC (syz-executor.0) pid=140418 stat=onproc flags process=0 proc=4000000 pri=32, usrpri=80, nice=20 forw=0xffffffffffffffff, list=0xffff800026530548,0xffffffff828ce7e0 process=0xffff800024b2f798 user=0xffff800027f62000, vmspace=0xfffffd806aed8560 estcpu=36, cpticks=1, pctcpu=0.0 user=0, sys=1, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 51341 365312 19942 0 2 0 syz-executor.0 *51341 140418 19942 0 7 0x4000000 syz-executor.0 73475 509750 0 0 3 0x14280 nfsidl nfsio 64916 458506 0 0 3 0x14280 nfsidl nfsio 7498 199359 0 0 3 0x14280 nfsidl nfsio 94275 94865 0 0 3 0x14280 nfsidl nfsio 18371 195917 0 0 3 0x14280 nfsidl nfsio 67802 254507 0 0 3 0x14280 nfsidl nfsio 30459 181861 22220 0 2 0x2 syz-executor.3 59620 71688 22220 0 2 0x2 syz-executor.1 19942 283805 22220 0 3 0x82 nanoslp syz-executor.0 58880 246826 0 0 3 0x14200 bored sosplice 83489 23407 22220 0 2 0x2 syz-executor.2 22220 114947 84996 0 3 0x82 kqread syz-fuzzer 22220 92845 84996 0 3 0x4000082 nanoslp syz-fuzzer 22220 229684 84996 0 3 0x4000082 thrsleep syz-fuzzer 22220 216027 84996 0 3 0x4000082 thrsleep syz-fuzzer 22220 109271 84996 0 3 0x4000082 thrsleep syz-fuzzer 22220 381502 84996 0 3 0x4000082 thrsleep syz-fuzzer 84996 327808 23681 0 3 0x10008a sigsusp ksh 23681 67407 58830 0 3 0x9a poll sshd 55543 52103 1 0 3 0x100083 ttyin getty 58830 43646 1 0 3 0x88 poll sshd 12982 413464 23798 73 3 0x100090 kqread syslogd 23798 191223 1 0 3 0x100082 netio syslogd 8335 35035 1 0 3 0x100080 kqread resolvd 10557 198061 80865 77 3 0x100092 kqread dhcpleased 7060 135290 80865 77 3 0x100092 kqread dhcpleased 80865 401680 1 0 3 0x80 kqread dhcpleased 95044 25218 0 0 3 0x14200 bored smr 61086 406802 0 0 2 0x14200 zerothread 33619 205108 0 0 3 0x14200 aiodoned aiodoned 23089 288384 0 0 3 0x14200 syncer update 54635 523466 0 0 3 0x14200 cleaner cleaner 25436 389501 0 0 3 0x14200 reaper reaper 60953 498765 0 0 3 0x14200 pgdaemon pagedaemon 70195 487865 0 0 3 0x14200 bored viomb 51240 78742 0 0 3 0x40014200 acpi0 acpi0 35366 148449 0 0 3 0x14200 bored softnet 49648 26482 0 0 3 0x14200 bored systqmp 31855 337780 0 0 3 0x14200 bored systq 43164 163381 0 0 3 0x40014200 bored softclock 82883 148694 0 0 3 0x40014200 idle0 1 85128 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 10144 6388K 6842K 78643K 11741 0 pcb 13 8K 8K 78643K 80 0 rtable 129 4K 4K 78643K 350 0 ifaddr 47 11K 12K 78643K 79 0 sysctl 2 0K 0K 78643K 2 0 counters 22 16K 16K 78643K 26 0 ioctlops 0 0K 4K 78643K 172 0 iov 0 0K 8K 78643K 35 0 mount 1 1K 1K 78643K 1 0 log 0 0K 0K 78643K 4 0 vnodes 1239 78K 78K 78643K 1681 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 5K 78643K 12 0 VM map 2 0K 0K 78643K 2 0 sem 12 0K 0K 78643K 88 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1697 195K 286K 78643K 12598 0 file desc 7 21K 41K 78643K 1155 0 proc 57 55K 71K 78643K 457 0 subproc 52 3K 3K 78643K 91 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 0 0K 0K 78643K 55 0 in_multi 44 2K 3K 78643K 157 0 ether_multi 1 0K 0K 78643K 26 0 mrt 0 0K 0K 78643K 6 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 511 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 174 40K 45K 78643K 14616 0 UVM aobj 27 2K 2K 78643K 27 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 85 0 NDP 6 0K 1K 78643K 24 0 temp 52 4180K 4247K 78643K 8086 0 kqueue 10 14K 18K 78643K 51 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 52 0 49 1 0 1 1 0 8 0 rtentry 112 100 0 45 3 1 2 2 0 8 0 unpcb 136 340 0 327 1 0 1 1 0 8 0 syncache 296 12 0 12 3 3 0 1 0 8 0 tcpqe 32 15 0 15 3 3 0 1 0 8 0 tcpcb 736 284 0 266 7 3 4 5 0 8 0 arp 88 16 0 8 1 0 1 1 0 8 0 inpcb 304 652 0 637 2 0 2 2 0 8 0 ip6q 72 2 0 2 1 1 0 1 0 8 0 ip6af 40 4 0 4 1 1 0 1 0 8 0 nd6 48 21 0 12 2 1 1 1 0 8 0 pkpcb 40 15 0 15 1 1 0 1 0 8 0 kcovpl 48 7 0 3 1 0 1 1 0 8 0 pfrule 1360 73 0 60 2 0 2 2 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 413 0 180 26 11 15 18 0 8 0 art_table 32 414 0 180 4 2 2 3 0 8 0 art_node 16 99 0 49 1 0 1 1 0 8 0 sysvmsgpl 40 12 0 0 1 0 1 1 0 8 0 semupl 112 10 0 10 1 1 0 1 0 8 0 semapl 112 86 0 76 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 3025 0 1621 89 0 89 89 0 8 0 ffsino 240 3025 0 1621 84 0 84 84 0 8 0 nchpl 144 4520 0 2922 61 0 61 61 0 8 0 uvmvnodes 80 3273 0 0 67 0 67 67 0 8 0 vnodes 224 3273 0 0 193 0 193 193 0 8 0 namei 1024 11942 0 11942 1 0 1 1 0 8 1 scxspl 216 12529 0 12529 9 8 1 8 0 8 1 plimitpl 152 48 0 38 1 0 1 1 0 8 0 sigapl 424 1374 0 1336 6 1 5 5 0 8 0 futexpl 64 8552 0 8552 1 0 1 1 0 8 1 knotepl 112 387 0 337 2 0 2 2 0 8 0 kqueuepl 184 165 0 159 1 0 1 1 0 8 0 pipepl 304 105 0 89 2 0 2 2 0 8 0 fdescpl 432 1354 0 1336 3 0 3 3 0 8 0 filepl 120 4790 0 4643 7 2 5 6 0 8 0 lockfpl 104 114 0 112 1 0 1 1 0 8 0 lockfspl 48 37 0 35 1 0 1 1 0 8 0 sessionpl 144 22 0 10 1 0 1 1 0 8 0 pgrppl 48 22 0 10 1 0 1 1 0 8 0 ucredpl 96 701 0 691 1 0 1 1 0 8 0 zombiepl 144 1336 0 1336 1 0 1 1 0 8 1 processpl 1000 1374 0 1336 6 0 6 6 0 8 0 procpl 672 2595 0 2551 5 0 5 5 0 8 0 sosppl 168 31 0 31 1 1 0 1 0 8 0 sockpl 448 1066 0 1035 6 1 5 6 0 8 1 mcl64k 65536 17 0 17 2 2 0 1 0 8 0 mcl16k 16384 17 0 17 2 1 1 1 0 8 1 mcl12k 12288 32 0 32 1 1 0 1 0 8 0 mcl8k 8192 23 0 23 3 3 0 1 0 8 0 mcl4k 4096 100 0 100 2 2 0 1 0 8 0 mcl2k 2048 12122 0 12071 15 7 8 11 0 8 0 mtagpl 96 53 0 45 3 2 1 1 0 8 0 mbufpl 256 35116 0 34898 25 9 16 21 0 8 1 bufpl 288 4709 0 136 327 0 327 327 0 8 0 anonpl 24 350335 0 344237 93 2 91 91 0 188 46 amapchunkpl 152 35184 0 34799 23 3 20 21 0 158 1 amappl16 200 4077 0 3960 33 18 15 32 0 8 8 amappl15 192 528 0 528 1 0 1 1 0 8 1 amappl14 184 268 0 266 1 0 1 1 0 8 0 amappl13 176 266 0 265 1 0 1 1 0 8 0 amappl12 168 18 0 15 1 0 1 1 0 8 0 amappl11 160 309 0 297 1 0 1 1 0 8 0 amappl10 152 49 0 42 1 0 1 1 0 8 0 amappl9 144 513 0 507 1 0 1 1 0 8 0 amappl8 136 386 0 358 1 0 1 1 0 8 0 amappl7 128 81 0 73 1 0 1 1 0 8 0 amappl6 120 234 0 217 1 0 1 1 0 8 0 amappl5 112 835 0 821 1 0 1 1 0 8 0 amappl4 104 1356 0 1332 1 0 1 1 0 8 0 amappl3 96 207 0 190 1 0 1 1 0 8 0 amappl2 88 577 0 538 2 0 2 2 0 8 0 amappl1 80 26113 0 25684 14 3 11 12 0 8 0 amappl 88 14217 0 14092 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 26 0 0 1 0 1 1 0 8 0 uaddrrnd 24 1354 0 1336 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 1354 0 1336 1 0 1 1 0 8 0 vmmpekpl 168 11196 0 11170 2 0 2 2 0 8 0 vmmpepl 168 122988 0 121661 95 4 91 91 0 357 26 vmsppl 272 1353 0 1336 3 1 2 2 0 8 0 rwobjpl 24 33459 0 29336 28 0 28 28 0 8 0 pdppl 4096 2714 0 2672 72 24 48 52 0 8 6 pvpl 32 675287 0 665863 206 50 156 156 0 265 66 pmappl 216 1353 0 1336 2 0 2 2 0 8 0 extentpl 40 57 0 38 1 0 1 1 0 8 0 phpool 112 673 0 66 18 0 18 18 0 8 0 ddb> machine ddbcpu 0 No such command ddb> trace pppacopen(4086331,1,2000,ffff8000265307e8) at pppacopen+0x19f sys/net/if_pppx.c:1020 spec_open(ffff800027f67268) at spec_open+0x3d7 sys/kern/spec_vnops.c:157 VOP_OPEN(fffffd8072533040,1,fffffd807f7d88a0,ffff8000265307e8) at VOP_OPEN+0x6c sys/kern/vfs_vops.c:138 vn_open(ffff800027f674b8,1,0) at vn_open+0x467 sys/kern/vfs_vnops.c:183 doopenat(ffff8000265307e8,ffffff9c,20000100,0,0,ffff800027f676a0) at doopenat+0x26a sys/kern/vfs_syscalls.c:1128 syscall(ffff800027f67710) at syscall+0x44e sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xe39236dfa0, count: -7 ddb> machine ddbcpu 1 No such command ddb> trace pppacopen(4086331,1,2000,ffff8000265307e8) at pppacopen+0x19f sys/net/if_pppx.c:1020 spec_open(ffff800027f67268) at spec_open+0x3d7 sys/kern/spec_vnops.c:157 VOP_OPEN(fffffd8072533040,1,fffffd807f7d88a0,ffff8000265307e8) at VOP_OPEN+0x6c sys/kern/vfs_vops.c:138 vn_open(ffff800027f674b8,1,0) at vn_open+0x467 sys/kern/vfs_vnops.c:183 doopenat(ffff8000265307e8,ffffff9c,20000100,0,0,ffff800027f676a0) at doopenat+0x26a sys/kern/vfs_syscalls.c:1128 syscall(ffff800027f67710) at syscall+0x44e sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xe39236dfa0, count: -7