login: uvm_fault(0xfffffd807f018000, 0x608, 0, 2) -> e kernel: page fault trap, code=0 Stopped at pppacopen+0x19f: movq %r13,0x608 TID PID UID PRFLAGS PFLAGS CPU COMMAND * 1395 83744 0 0x2 0 0 syz-executor4183 pppacopen(86353,1,2000,ffff80002165fa50) at pppacopen+0x19f sys/net/if_pppx.c:1020 spec_open(ffff80002163f5d8) at spec_open+0x3d7 sys/kern/spec_vnops.c:157 VOP_OPEN(fffffd806ddd6768,1,fffffd807f7d8720,ffff80002165fa50) at VOP_OPEN+0x6c sys/kern/vfs_vops.c:138 vn_open(ffff80002163f828,1,0) at vn_open+0x467 sys/kern/vfs_vnops.c:183 doopenat(ffff80002165fa50,ffffff9c,20000780,0,0,ffff80002163fa10) at doopenat+0x26a sys/kern/vfs_syscalls.c:1128 syscall(ffff80002163fa80) at syscall+0x44e sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7fffff5fb0, 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(0xfffffd807f018000, 0x608, 0, 2) -> e ddb> trace pppacopen(86353,1,2000,ffff80002165fa50) at pppacopen+0x19f sys/net/if_pppx.c:1020 spec_open(ffff80002163f5d8) at spec_open+0x3d7 sys/kern/spec_vnops.c:157 VOP_OPEN(fffffd806ddd6768,1,fffffd807f7d8720,ffff80002165fa50) at VOP_OPEN+0x6c sys/kern/vfs_vops.c:138 vn_open(ffff80002163f828,1,0) at vn_open+0x467 sys/kern/vfs_vnops.c:183 doopenat(ffff80002165fa50,ffffff9c,20000780,0,0,ffff80002163fa10) at doopenat+0x26a sys/kern/vfs_syscalls.c:1128 syscall(ffff80002163fa80) at syscall+0x44e sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7fffff5fb0, count: -7 ddb> show registers rdi 0 rsi 0 rbp 0xffff80002163f550 rbx 0 rdx 0 rcx 0 rax 0xffff800000b1a000 r8 0x6b0 r9 0xfffffd807f7d8720 r10 0x74f8fa3f97fbf893 r11 0x42b2cc11300872d7 r12 0xfffffd806ddd6768 r13 0 r14 0x86353 acpi_pdirpa+0x721bb r15 0xffff80002163f5d8 rip 0xffffffff81540f4f pppacopen+0x19f cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff80002163f500 ss 0x10 pppacopen+0x19f: movq %r13,0x608 ddb> show proc PROC (syz-executor4183) pid=1395 stat=onproc flags process=2 proc=0 pri=17, usrpri=54, nice=20 forw=0xffffffffffffffff, list=0xffff80002165e010,0xffffffff828ce7e0 process=0xffff800021671788 user=0xffff80002163a000, vmspace=0xfffffd807f018000 estcpu=4, cpticks=1, pctcpu=0.0 user=0, sys=1, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND *83744 1395 61409 0 7 0x2 syz-executor4183 61409 132534 91925 0 3 0x10008a sigsusp ksh 91925 324609 90484 0 3 0x9a poll sshd 74726 271081 1 0 3 0x100083 ttyin getty 90484 81789 1 0 3 0x88 poll sshd 34221 493165 98371 73 3 0x100090 kqread syslogd 98371 350501 1 0 3 0x100082 netio syslogd 75086 470012 1 0 3 0x100080 kqread resolvd 3887 490244 37753 77 3 0x100092 kqread dhcpleased 48624 336677 37753 77 3 0x100092 kqread dhcpleased 37753 219805 1 0 3 0x80 kqread dhcpleased 88004 245966 0 0 3 0x14200 bored smr 93768 172079 0 0 3 0x14200 pgzero zerothread 54306 470208 0 0 3 0x14200 aiodoned aiodoned 41071 327199 0 0 3 0x14200 syncer update 83537 253154 0 0 3 0x14200 cleaner cleaner 10621 1903 0 0 3 0x14200 reaper reaper 88250 432048 0 0 3 0x14200 pgdaemon pagedaemon 97883 145021 0 0 3 0x14200 bored viomb 83010 492195 0 0 3 0x40014200 acpi0 acpi0 76451 267845 0 0 3 0x14200 bored softnet 67539 92609 0 0 3 0x14200 bored systqmp 21919 98101 0 0 3 0x14200 bored systq 34780 203089 0 0 3 0x40014200 bored softclock 75987 402396 0 0 3 0x40014200 idle0 1 140957 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 10127 6382K 6412K 78643K 11217 0 pcb 13 8K 8K 78643K 13 0 rtable 62 2K 2K 78643K 114 0 ifaddr 24 7K 7K 78643K 24 0 counters 19 16K 16K 78643K 19 0 ioctlops 0 0K 2K 78643K 25 0 mount 1 1K 1K 78643K 1 0 log 0 0K 0K 78643K 4 0 vnodes 1179 74K 74K 78643K 1184 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 1K 78643K 2 0 VM map 2 0K 0K 78643K 2 0 sem 2 0K 0K 78643K 2 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1697 195K 286K 78643K 12598 0 file desc 1 0K 0K 78643K 1 0 proc 55 54K 55K 78643K 225 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 in_multi 11 0K 0K 78643K 11 0 ether_multi 1 0K 0K 78643K 1 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 25 122K 122K 78643K 25 0 exec 0 0K 2K 78643K 318 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 71 3K 5K 78643K 1488 0 UVM aobj 3 2K 2K 78643K 3 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 NDP 3 0K 0K 78643K 3 0 temp 19 4178K 4241K 78643K 2821 0 kqueue 9 12K 12K 78643K 9 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 20 0 17 1 0 1 1 0 8 0 rtentry 112 23 0 1 1 0 1 1 0 8 0 unpcb 136 33 0 20 1 0 1 1 0 8 0 syncache 296 5 0 5 2 1 1 1 0 8 1 tcpcb 736 7 0 4 1 0 1 1 0 8 0 arp 88 2 0 0 1 0 1 1 0 8 0 inpcb 304 22 0 16 1 0 1 1 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 96 0 0 6 0 6 6 0 8 0 art_table 32 97 0 0 1 0 1 1 0 8 0 art_node 16 22 0 2 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 1398 0 22 87 0 87 87 0 8 0 ffsino 240 1398 0 22 81 0 81 81 0 8 0 nchpl 144 1564 0 37 57 0 57 57 0 8 0 uvmvnodes 80 1407 0 0 29 0 29 29 0 8 0 vnodes 224 1407 0 0 83 0 83 83 0 8 0 namei 1024 3857 0 3857 2 1 1 1 0 8 1 scxspl 216 3300 0 3300 2 1 1 2 0 8 1 plimitpl 152 15 0 9 1 0 1 1 0 8 0 sigapl 424 229 0 203 4 0 4 4 0 8 0 knotepl 112 125 0 102 1 0 1 1 0 8 0 kqueuepl 184 5 0 0 1 0 1 1 0 8 0 pipepl 304 63 0 60 2 1 1 1 0 8 0 fdescpl 432 216 0 203 2 0 2 2 0 8 0 filepl 120 947 0 893 2 0 2 2 0 8 0 lockfpl 104 6 0 4 1 0 1 1 0 8 0 lockfspl 48 4 0 2 1 0 1 1 0 8 0 sessionpl 144 17 0 9 1 0 1 1 0 8 0 pgrppl 48 17 0 9 1 0 1 1 0 8 0 ucredpl 96 64 0 54 1 0 1 1 0 8 0 zombiepl 144 203 0 203 2 1 1 1 0 8 1 processpl 1000 229 0 203 4 0 4 4 0 8 0 procpl 672 229 0 203 3 0 3 3 0 8 0 sockpl 448 75 0 53 3 0 3 3 0 8 0 mcl8k 8192 9 0 9 2 1 1 1 0 8 1 mcl4k 4096 5 0 5 2 1 1 1 0 8 1 mcl2k 2048 5600 0 5572 7 1 6 6 0 8 1 mtagpl 96 4 0 4 1 1 0 1 0 8 0 mbufpl 256 10209 0 10142 6 0 6 6 0 8 1 bufpl 288 1879 0 86 129 0 129 129 0 8 0 anonpl 24 34822 0 32766 16 2 14 16 0 188 1 amapchunkpl 152 2904 0 2779 6 0 6 6 0 158 0 amappl16 200 87 0 83 1 0 1 1 0 8 0 amappl15 192 1 0 0 1 0 1 1 0 8 0 amappl13 176 16 0 15 2 1 1 1 0 8 0 amappl12 168 18 0 17 1 0 1 1 0 8 0 amappl11 160 51 0 41 1 0 1 1 0 8 0 amappl10 152 29 0 26 1 0 1 1 0 8 0 amappl9 144 436 0 434 1 0 1 1 0 8 0 amappl8 136 242 0 242 2 1 1 1 0 8 1 amappl7 128 43 0 40 1 0 1 1 0 8 0 amappl6 120 92 0 82 1 0 1 1 0 8 0 amappl5 112 196 0 184 1 0 1 1 0 8 0 amappl4 104 455 0 437 1 0 1 1 0 8 0 amappl3 96 132 0 118 1 0 1 1 0 8 0 amappl2 88 298 0 266 1 0 1 1 0 8 0 amappl1 80 7123 0 6776 10 1 9 9 0 8 1 amappl 88 1265 0 1209 2 0 2 2 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 24 216 0 203 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 216 0 203 1 0 1 1 0 8 0 vmmpekpl 168 5650 0 5635 1 0 1 1 0 8 0 vmmpepl 168 21546 0 20783 39 1 38 38 0 357 4 vmsppl 272 215 0 203 2 1 1 2 0 8 0 rwobjpl 24 8301 0 6390 12 0 12 12 0 8 0 pdppl 4096 438 0 406 52 20 32 38 0 8 0 pvpl 32 105994 0 102245 36 2 34 36 0 265 2 pmappl 216 215 0 203 1 0 1 1 0 8 0 extentpl 40 57 0 38 1 0 1 1 0 8 0 phpool 112 387 0 27 11 0 11 11 0 8 0 ddb> machine ddbcpu 0 No such command ddb> trace pppacopen(86353,1,2000,ffff80002165fa50) at pppacopen+0x19f sys/net/if_pppx.c:1020 spec_open(ffff80002163f5d8) at spec_open+0x3d7 sys/kern/spec_vnops.c:157 VOP_OPEN(fffffd806ddd6768,1,fffffd807f7d8720,ffff80002165fa50) at VOP_OPEN+0x6c sys/kern/vfs_vops.c:138 vn_open(ffff80002163f828,1,0) at vn_open+0x467 sys/kern/vfs_vnops.c:183 doopenat(ffff80002165fa50,ffffff9c,20000780,0,0,ffff80002163fa10) at doopenat+0x26a sys/kern/vfs_syscalls.c:1128 syscall(ffff80002163fa80) at syscall+0x44e sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7fffff5fb0, count: -7 ddb> machine ddbcpu 1 No such command ddb> trace pppacopen(86353,1,2000,ffff80002165fa50) at pppacopen+0x19f sys/net/if_pppx.c:1020 spec_open(ffff80002163f5d8) at spec_open+0x3d7 sys/kern/spec_vnops.c:157 VOP_OPEN(fffffd806ddd6768,1,fffffd807f7d8720,ffff80002165fa50) at VOP_OPEN+0x6c sys/kern/vfs_vops.c:138 vn_open(ffff80002163f828,1,0) at vn_open+0x467 sys/kern/vfs_vnops.c:183 doopenat(ffff80002165fa50,ffffff9c,20000780,0,0,ffff80002163fa10) at doopenat+0x26a sys/kern/vfs_syscalls.c:1128 syscall(ffff80002163fa80) at syscall+0x44e sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7fffff5fb0, count: -7 ddb>