uvm_fault(0xfffffd806ae9d780, 0x608, 0, 2) -> e kernel: page fault trap, code=0 Stopped at pppacopen+0x19f: movq %r13,0x608 TID PID UID PRFLAGS PFLAGS CPU COMMAND *493782 60677 0 0 0x4000000 0 syz-executor.3 pppacopen(4086331,1,2000,ffff8000265527f0) at pppacopen+0x19f sys/net/if_pppx.c:1020 spec_open(ffff800027f76de8) at spec_open+0x3d7 sys/kern/spec_vnops.c:157 VOP_OPEN(fffffd80679f3e18,1,fffffd807f7d89c0,ffff8000265527f0) at VOP_OPEN+0x6c sys/kern/vfs_vops.c:138 vn_open(ffff800027f77038,1,0) at vn_open+0x467 sys/kern/vfs_vnops.c:183 doopenat(ffff8000265527f0,ffffff9c,20000100,0,0,ffff800027f77220) at doopenat+0x26a sys/kern/vfs_syscalls.c:1128 syscall(ffff800027f77290) at syscall+0x44e sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xafc9074c8a0, 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(0xfffffd806ae9d780, 0x608, 0, 2) -> e ddb> trace pppacopen(4086331,1,2000,ffff8000265527f0) at pppacopen+0x19f sys/net/if_pppx.c:1020 spec_open(ffff800027f76de8) at spec_open+0x3d7 sys/kern/spec_vnops.c:157 VOP_OPEN(fffffd80679f3e18,1,fffffd807f7d89c0,ffff8000265527f0) at VOP_OPEN+0x6c sys/kern/vfs_vops.c:138 vn_open(ffff800027f77038,1,0) at vn_open+0x467 sys/kern/vfs_vnops.c:183 doopenat(ffff8000265527f0,ffffff9c,20000100,0,0,ffff800027f77220) at doopenat+0x26a sys/kern/vfs_syscalls.c:1128 syscall(ffff800027f77290) at syscall+0x44e sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xafc9074c8a0, count: -7 ddb> show registers rdi 0xffff800024b34000 rsi 0x421 rbp 0xffff800027f76d60 rbx 0 rdx 0xffff800024b34000 rcx 0x420 rax 0xffffffff81540f4f pppacopen+0x19f r8 0x6b0 r9 0xfffffd807f7d89c0 r10 0x645900cd5d71aca8 r11 0x9cc2d33352fcca19 r12 0xfffffd80679f3e18 r13 0 r14 0x4086331 __kernel_phys_end+0x1686331 r15 0xffff800027f76de8 rip 0xffffffff81540f4f pppacopen+0x19f cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff800027f76d10 ss 0x10 pppacopen+0x19f: movq %r13,0x608 ddb> show proc PROC (syz-executor.3) pid=493782 stat=onproc flags process=0 proc=4000000 pri=32, usrpri=65, nice=20 forw=0xffffffffffffffff, list=0xffff800026552d30,0xffff8000ffff9cf8 process=0xffff80002164b790 user=0xffff800027f72000, vmspace=0xfffffd806ae9d780 estcpu=36, cpticks=0, pctcpu=0.0 user=0, sys=0, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 46112 461562 3420 0 2 0 syz-executor.0 46112 169274 3420 0 3 0x4000080 fsleep syz-executor.0 60677 182756 83601 0 2 0 syz-executor.3 *60677 493782 83601 0 7 0x4000000 syz-executor.3 24596 187406 38521 0 2 0 syz-executor.1 24596 515006 38521 0 3 0x4000080 fsleep syz-executor.1 99628 310478 0 0 3 0x14200 bored sosplice 68351 246368 0 0 3 0x14280 nfsidl nfsio 83322 65101 0 0 3 0x14280 nfsidl nfsio 5621 427289 0 0 3 0x14280 nfsidl nfsio 35988 473659 0 0 3 0x14280 nfsidl nfsio 53417 164213 0 0 3 0x14280 nfsidl nfsio 92614 339438 0 0 3 0x14280 nfsidl nfsio 70624 168117 0 0 3 0x14280 nfsidl nfsio 88264 180955 0 0 3 0x14280 nfsidl nfsio 34822 507866 0 0 3 0x14280 nfsidl nfsio 25037 479132 0 0 3 0x14280 nfsidl nfsio 79794 88167 0 0 3 0x14280 nfsidl nfsio 31934 81945 0 0 3 0x14280 nfsidl nfsio 35577 254032 0 0 3 0x14280 nfsidl nfsio 40001 19115 0 0 3 0x14280 nfsidl nfsio 90382 111781 0 0 3 0x14280 nfsidl nfsio 22171 460166 0 0 3 0x14280 nfsidl nfsio 37408 415685 0 0 3 0x14280 nfsidl nfsio 18758 385477 0 0 3 0x14280 nfsidl nfsio 69685 163072 0 0 3 0x14280 nfsidl nfsio 83551 475147 0 0 3 0x14280 nfsidl nfsio 28291 345421 99026 0 3 0x82 nanoslp syz-executor.2 83601 260249 99026 0 3 0x82 nanoslp syz-executor.3 3420 211337 99026 0 3 0x82 nanoslp syz-executor.0 38521 311643 99026 0 3 0x82 nanoslp syz-executor.1 99026 468388 85491 0 3 0x82 kqread syz-fuzzer 99026 418265 85491 0 3 0x4000082 thrsleep syz-fuzzer 99026 202537 85491 0 3 0x4000082 thrsleep syz-fuzzer 99026 34769 85491 0 3 0x4000082 thrsleep syz-fuzzer 99026 120627 85491 0 3 0x4000082 thrsleep syz-fuzzer 99026 507584 85491 0 3 0x4000082 thrsleep syz-fuzzer 85491 424942 83380 0 3 0x10008a sigsusp ksh 83380 439485 77839 0 3 0x9a poll sshd 23675 153233 1 0 3 0x100083 ttyin getty 77839 361276 1 0 3 0x88 poll sshd 39158 205035 38729 73 3 0x100090 kqread syslogd 38729 404203 1 0 3 0x100082 netio syslogd 85163 293975 1 0 3 0x100080 kqread resolvd 13337 164702 54809 77 3 0x100092 kqread dhcpleased 5135 461782 54809 77 3 0x100092 kqread dhcpleased 54809 392676 1 0 3 0x80 kqread dhcpleased 15999 110568 0 0 3 0x14200 bored smr 35749 191051 0 0 2 0x14200 zerothread 98468 335955 0 0 3 0x14200 aiodoned aiodoned 26021 69268 0 0 3 0x14200 syncer update 35086 222735 0 0 3 0x14200 cleaner cleaner 17470 512406 0 0 3 0x14200 reaper reaper 9936 284426 0 0 3 0x14200 pgdaemon pagedaemon 57868 430380 0 0 3 0x14200 bored viomb 74988 427183 0 0 3 0x40014200 acpi0 acpi0 56636 265787 0 0 3 0x14200 bored softnet 22433 124108 0 0 3 0x14200 bored systqmp 55776 190262 0 0 3 0x14200 bored systq 53312 258567 0 0 3 0x40014200 bored softclock 7367 374702 0 0 3 0x40014200 idle0 1 99406 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 10159 6594K 6721K 78643K 11607 0 pcb 13 8K 8K 78643K 43 0 rtable 151 5K 6K 78643K 265 0 ifaddr 53 12K 13K 78643K 66 0 sysctl 1 1K 1K 78643K 5 0 counters 23 16K 17K 78643K 25 0 ioctlops 0 0K 4K 78643K 42 0 iov 0 0K 12K 78643K 9 0 mount 1 1K 1K 78643K 1 0 log 0 0K 0K 78643K 4 0 vnodes 1236 78K 78K 78643K 1350 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 5K 78643K 3 0 VM map 2 0K 0K 78643K 2 0 sem 12 0K 0K 78643K 14 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1697 195K 286K 78643K 12598 0 file desc 9 29K 45K 78643K 427 0 sigio 0 0K 0K 78643K 3 0 proc 60 55K 71K 78643K 346 0 subproc 52 3K 3K 78643K 53 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 0 0K 0K 78643K 18 0 in_multi 55 3K 3K 78643K 73 0 ether_multi 1 0K 0K 78643K 8 0 mrt 1 0K 0K 78643K 2 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 49 228K 228K 78643K 49 0 exec 0 0K 2K 78643K 433 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 215 43K 52K 78643K 6230 0 UVM aobj 3 2K 2K 78643K 3 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 23 0 NDP 7 0K 1K 78643K 18 0 temp 67 4187K 4675K 78643K 4365 0 kqueue 12 14K 16K 78643K 23 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 44 0 41 1 0 1 1 0 8 0 rtentry 112 71 0 6 2 0 2 2 0 8 0 unpcb 136 117 0 104 1 0 1 1 0 8 0 syncache 296 7 0 7 3 2 1 1 0 8 1 tcpqe 32 468 0 468 3 2 1 2 0 8 1 tcpcb 736 51 0 43 1 0 1 1 0 8 0 arp 88 11 0 1 1 0 1 1 0 8 0 inpcb 304 163 0 154 2 1 1 2 0 8 0 nd6 48 13 0 1 1 0 1 1 0 8 0 kcovpl 48 4 0 0 1 0 1 1 0 8 0 pfrktable 1344 7 0 6 1 0 1 1 0 8 0 pfrule 1360 7 0 4 1 0 1 1 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 277 0 2 18 0 18 18 0 8 0 art_table 32 278 0 2 3 0 3 3 0 8 0 art_node 16 70 0 12 1 0 1 1 0 8 0 sysvmsgpl 40 10 0 3 1 0 1 1 0 8 0 semupl 112 2 0 2 1 0 1 1 0 8 1 semapl 112 12 0 2 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 1878 0 471 89 0 89 89 0 8 0 ffsino 240 1878 0 471 84 0 84 84 0 8 0 nchpl 144 2512 0 895 61 0 61 61 0 8 0 uvmvnodes 80 2023 0 0 42 0 42 42 0 8 0 vnodes 224 2023 0 0 119 0 119 119 0 8 0 namei 1024 6690 0 6690 1 0 1 1 0 8 1 pfiaddrpl 120 2 0 2 1 0 1 1 0 8 1 scxspl 216 7310 0 7310 9 8 1 8 0 8 1 plimitpl 152 31 0 21 1 0 1 1 0 8 0 sigapl 424 666 0 612 8 1 7 7 0 8 0 futexpl 64 2056 0 2054 1 0 1 1 0 8 0 knotepl 112 272 0 221 2 0 2 2 0 8 0 kqueuepl 184 41 0 34 1 0 1 1 0 8 0 pipepl 304 90 0 74 2 0 2 2 0 8 0 fdescpl 432 632 0 612 3 0 3 3 0 8 0 filepl 120 2121 0 1973 6 1 5 5 0 8 0 lockfpl 104 50 0 48 1 0 1 1 0 8 0 lockfspl 48 22 0 20 1 0 1 1 0 8 0 sessionpl 144 19 0 7 1 0 1 1 0 8 0 pgrppl 48 19 0 7 1 0 1 1 0 8 0 ucredpl 96 213 0 203 1 0 1 1 0 8 0 zombiepl 144 612 0 611 1 0 1 1 0 8 0 processpl 1000 666 0 611 7 0 7 7 0 8 0 procpl 672 1077 0 1014 6 0 6 6 0 8 0 sosppl 168 3 0 3 2 1 1 1 0 8 1 sockpl 448 324 0 299 4 0 4 4 0 8 0 mcl64k 65536 4 0 4 1 0 1 1 0 8 1 mcl16k 16384 1 0 1 1 0 1 1 0 8 1 mcl12k 12288 1 0 1 1 1 0 1 0 8 0 mcl8k 8192 9 0 9 2 2 0 1 0 8 0 mcl4k 4096 8 0 8 2 1 1 1 0 8 1 mcl2k 2048 66703 0 66647 32 22 10 27 0 8 2 mtagpl 96 48 0 4 3 1 2 2 0 8 0 mbufpl 256 108656 0 108330 26 4 22 22 0 8 0 bufpl 288 3888 0 132 269 0 269 269 0 8 0 anonpl 24 150733 0 135933 118 6 112 117 0 188 18 amapchunkpl 152 14924 0 14326 31 3 28 28 0 158 3 amappl16 200 1607 0 1120 39 10 29 39 0 8 3 amappl15 192 91 0 89 1 0 1 1 0 8 0 amappl14 184 2 0 0 1 0 1 1 0 8 0 amappl13 176 41 0 39 1 0 1 1 0 8 0 amappl12 168 103 0 100 1 0 1 1 0 8 0 amappl11 160 45 0 35 1 0 1 1 0 8 0 amappl10 152 147 0 139 1 0 1 1 0 8 0 amappl9 144 460 0 457 1 0 1 1 0 8 0 amappl8 136 429 0 400 2 0 2 2 0 8 0 amappl7 128 165 0 156 1 0 1 1 0 8 0 amappl6 120 138 0 124 1 0 1 1 0 8 0 amappl5 112 644 0 626 1 0 1 1 0 8 0 amappl4 104 552 0 531 1 0 1 1 0 8 0 amappl3 96 252 0 235 1 0 1 1 0 8 0 amappl2 88 354 0 313 2 0 2 2 0 8 0 amappl1 80 13736 0 13276 12 1 11 12 0 8 0 amappl 88 5920 0 5752 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 2 0 0 1 0 1 1 0 8 0 uaddrrnd 24 632 0 612 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 632 0 612 1 0 1 1 0 8 0 vmmpekpl 168 7794 0 7766 2 0 2 2 0 8 0 vmmpepl 168 60148 0 58274 103 12 91 103 0 357 6 vmsppl 272 631 0 612 3 1 2 2 0 8 0 rwobjpl 24 17327 0 14064 21 1 20 20 0 8 0 pdppl 4096 1270 0 1224 72 24 48 54 0 8 2 pvpl 32 331610 0 313235 186 5 181 186 0 265 28 pmappl 216 631 0 612 2 0 2 2 0 8 0 extentpl 40 57 0 38 1 0 1 1 0 8 0 phpool 112 613 0 56 16 0 16 16 0 8 0 ddb> machine ddbcpu 0 No such command ddb> trace pppacopen(4086331,1,2000,ffff8000265527f0) at pppacopen+0x19f sys/net/if_pppx.c:1020 spec_open(ffff800027f76de8) at spec_open+0x3d7 sys/kern/spec_vnops.c:157 VOP_OPEN(fffffd80679f3e18,1,fffffd807f7d89c0,ffff8000265527f0) at VOP_OPEN+0x6c sys/kern/vfs_vops.c:138 vn_open(ffff800027f77038,1,0) at vn_open+0x467 sys/kern/vfs_vnops.c:183 doopenat(ffff8000265527f0,ffffff9c,20000100,0,0,ffff800027f77220) at doopenat+0x26a sys/kern/vfs_syscalls.c:1128 syscall(ffff800027f77290) at syscall+0x44e sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xafc9074c8a0, count: -7 ddb> machine ddbcpu 1 No such command ddb> trace pppacopen(4086331,1,2000,ffff8000265527f0) at pppacopen+0x19f sys/net/if_pppx.c:1020 spec_open(ffff800027f76de8) at spec_open+0x3d7 sys/kern/spec_vnops.c:157 VOP_OPEN(fffffd80679f3e18,1,fffffd807f7d89c0,ffff8000265527f0) at VOP_OPEN+0x6c sys/kern/vfs_vops.c:138 vn_open(ffff800027f77038,1,0) at vn_open+0x467 sys/kern/vfs_vnops.c:183 doopenat(ffff8000265527f0,ffffff9c,20000100,0,0,ffff800027f77220) at doopenat+0x26a sys/kern/vfs_syscalls.c:1128 syscall(ffff800027f77290) at syscall+0x44e sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xafc9074c8a0, count: -7