uvm_fault(0xfffffd806aede010, 0x608, 0, 2) -> e kernel: page fault trap, code=0 Stopped at pppacopen+0x19f: movq %r13,0x608 TID PID UID PRFLAGS PFLAGS CPU COMMAND *180324 54567 0 0 0x4000000 0 syz-executor.2 pppacopen(86338,1,2000,ffff80002166e000) at pppacopen+0x19f sys/net/if_pppx.c:1020 spec_open(ffff800027f631e8) at spec_open+0x3d7 sys/kern/spec_vnops.c:157 VOP_OPEN(fffffd806ae0e1e0,1,fffffd807f7d8840,ffff80002166e000) at VOP_OPEN+0x6c sys/kern/vfs_vops.c:138 vn_open(ffff800027f63438,1,0) at vn_open+0x467 sys/kern/vfs_vnops.c:183 doopenat(ffff80002166e000,ffffff9c,20000100,0,0,ffff800027f63620) at doopenat+0x26a sys/kern/vfs_syscalls.c:1128 syscall(ffff800027f63690) at syscall+0x44e sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x36ad457580, 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(0xfffffd806aede010, 0x608, 0, 2) -> e ddb> trace pppacopen(86338,1,2000,ffff80002166e000) at pppacopen+0x19f sys/net/if_pppx.c:1020 spec_open(ffff800027f631e8) at spec_open+0x3d7 sys/kern/spec_vnops.c:157 VOP_OPEN(fffffd806ae0e1e0,1,fffffd807f7d8840,ffff80002166e000) at VOP_OPEN+0x6c sys/kern/vfs_vops.c:138 vn_open(ffff800027f63438,1,0) at vn_open+0x467 sys/kern/vfs_vnops.c:183 doopenat(ffff80002166e000,ffffff9c,20000100,0,0,ffff800027f63620) at doopenat+0x26a sys/kern/vfs_syscalls.c:1128 syscall(ffff800027f63690) at syscall+0x44e sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x36ad457580, count: -7 ddb> show registers rdi 0xffff800021704000 rsi 0x57c rbp 0xffff800027f63160 rbx 0 rdx 0xffff800021704000 rcx 0x57b rax 0xffffffff81540f4f pppacopen+0x19f r8 0x6b0 r9 0 r10 0x6288c2c5c1f4a530 r11 0x3088ea3b25c172c0 r12 0xfffffd806ae0e1e0 r13 0 r14 0x86338 acpi_pdirpa+0x721a0 r15 0xffff800027f631e8 rip 0xffffffff81540f4f pppacopen+0x19f cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff800027f63110 ss 0x10 pppacopen+0x19f: movq %r13,0x608 ddb> show proc PROC (syz-executor.2) pid=180324 stat=onproc flags process=0 proc=4000000 pri=32, usrpri=51, nice=20 forw=0xffffffffffffffff, list=0xffff80002166fa40,0xffffffff828ce7e0 process=0xffff8000216fcfc0 user=0xffff800027f5e000, vmspace=0xfffffd806aede010 estcpu=1, cpticks=1, pctcpu=0.0 user=0, sys=1, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 54567 495164 94258 0 2 0 syz-executor.2 *54567 180324 94258 0 7 0x4000000 syz-executor.2 74687 498180 77823 0 2 0 syz-executor.1 74687 334908 77823 0 2 0x4000000 syz-executor.1 92892 146805 79035 0 2 0 syz-executor.0 92892 468700 79035 0 3 0x4000080 fsleep syz-executor.0 32008 416130 15853 0 2 0x482 syz-executor.3 77823 29971 15853 0 2 0x482 syz-executor.1 79035 512317 15853 0 2 0x482 syz-executor.0 94258 260784 15853 0 2 0x482 syz-executor.2 15853 395525 5513 0 3 0x82 thrsleep syz-fuzzer 15853 515416 5513 0 2 0x4000482 syz-fuzzer 15853 381612 5513 0 3 0x4000082 thrsleep syz-fuzzer 15853 516762 5513 0 3 0x4000082 thrsleep syz-fuzzer 15853 39899 5513 0 3 0x4000082 thrsleep syz-fuzzer 15853 111771 5513 0 3 0x4000082 thrsleep syz-fuzzer 15853 21331 5513 0 3 0x4000082 kqread syz-fuzzer 5513 138449 48757 0 3 0x10008a sigsusp ksh 48757 190116 62865 0 3 0x9a poll sshd 75244 474701 1 0 3 0x100083 ttyin getty 62865 111837 1 0 3 0x88 poll sshd 92865 126543 59649 73 2 0x100090 syslogd 59649 49593 1 0 3 0x100082 netio syslogd 77917 386442 1 0 3 0x100080 kqread resolvd 64630 394817 98624 77 3 0x100092 kqread dhcpleased 12349 32350 98624 77 3 0x100092 kqread dhcpleased 98624 380689 1 0 3 0x80 kqread dhcpleased 5599 177548 0 0 3 0x14200 bored smr 13753 493482 0 0 2 0x14200 zerothread 35583 469487 0 0 3 0x14200 aiodoned aiodoned 91658 80001 0 0 3 0x14200 syncer update 24966 465469 0 0 3 0x14200 cleaner cleaner 64495 343576 0 0 3 0x14200 reaper reaper 187 156445 0 0 3 0x14200 pgdaemon pagedaemon 97295 478027 0 0 3 0x14200 bored viomb 17403 291796 0 0 3 0x40014200 acpi0 acpi0 16487 186650 0 0 3 0x14200 bored softnet 5998 448286 0 0 3 0x14200 bored systqmp 44438 404354 0 0 3 0x14200 bored systq 77378 281481 0 0 3 0x40014200 bored softclock 88609 380665 0 0 3 0x40014200 idle0 1 423138 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 10141 6400K 6713K 78643K 11342 0 pcb 13 8K 8K 78643K 31 0 rtable 150 4K 4K 78643K 234 0 ifaddr 53 12K 12K 78643K 53 0 counters 23 16K 16K 78643K 23 0 ioctlops 0 0K 2K 78643K 29 0 mount 1 1K 1K 78643K 1 0 log 0 0K 0K 78643K 4 0 vnodes 1234 78K 78K 78643K 1290 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 9 29K 49K 78643K 141 0 proc 56 54K 71K 78643K 338 0 subproc 52 3K 3K 78643K 52 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 in_multi 55 3K 3K 78643K 55 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 422 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 201 40K 41K 78643K 2863 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 7 0K 1K 78643K 15 0 temp 52 4179K 4243K 78643K 3620 0 kqueue 10 14K 14K 78643K 10 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 28 0 25 1 0 1 1 0 8 0 rtentry 112 67 0 1 2 0 2 2 0 8 0 unpcb 136 41 0 28 1 0 1 1 0 8 0 syncache 296 4 0 4 1 1 0 1 0 8 0 tcpcb 736 7 0 3 1 0 1 1 0 8 0 arp 88 10 0 0 1 0 1 1 0 8 0 ipq 40 1 0 0 1 0 1 1 0 8 0 ipqe 40 1 0 0 1 0 1 1 0 8 0 inpcb 304 73 0 66 1 0 1 1 0 8 0 nd6 48 12 0 0 1 0 1 1 0 8 0 kcovpl 48 4 0 0 1 0 1 1 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 276 0 0 18 0 18 18 0 8 0 art_table 32 277 0 0 3 0 3 3 0 8 0 art_node 16 66 0 6 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 1544 0 137 89 0 89 89 0 8 0 ffsino 240 1544 0 137 83 0 83 83 0 8 0 nchpl 144 1847 0 230 61 0 61 61 0 8 0 uvmvnodes 80 1638 0 0 34 0 34 34 0 8 0 vnodes 224 1638 0 0 97 0 97 97 0 8 0 namei 1024 5047 0 5047 1 0 1 1 0 8 1 scxspl 216 5194 0 5194 2 1 1 2 0 8 1 plimitpl 152 18 0 8 1 0 1 1 0 8 0 sigapl 424 359 0 326 5 0 5 5 0 8 1 futexpl 64 431 0 430 1 0 1 1 0 8 0 knotepl 112 205 0 155 2 0 2 2 0 8 0 kqueuepl 184 6 0 0 1 0 1 1 0 8 0 pipepl 304 88 0 72 2 0 2 2 0 8 0 fdescpl 432 346 0 326 3 0 3 3 0 8 0 filepl 120 1348 0 1200 5 0 5 5 0 8 0 lockfpl 104 14 0 12 1 0 1 1 0 8 0 lockfspl 48 8 0 6 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 59 0 49 1 0 1 1 0 8 0 zombiepl 144 326 0 325 1 0 1 1 0 8 0 processpl 1000 359 0 325 5 0 5 5 0 8 0 procpl 672 445 0 402 4 0 4 4 0 8 0 sockpl 448 142 0 119 4 0 4 4 0 8 1 mcl8k 8192 8 0 8 1 0 1 1 0 8 1 mcl4k 4096 4 0 4 1 1 0 1 0 8 0 mcl2k 2048 34250 0 34213 9 1 8 8 0 8 3 mtagpl 96 26 0 4 2 1 1 1 0 8 0 mbufpl 256 56106 0 55872 18 0 18 18 0 8 2 bufpl 288 3558 0 135 245 0 245 245 0 8 0 anonpl 24 73620 0 63662 62 0 62 62 0 188 1 amapchunkpl 152 7146 0 6627 22 0 22 22 0 158 1 amappl16 200 623 0 359 16 0 16 16 0 8 0 amappl15 192 23 0 21 1 0 1 1 0 8 0 amappl14 184 4 0 4 1 0 1 1 0 8 1 amappl13 176 57 0 56 1 0 1 1 0 8 0 amappl12 168 11 0 11 1 1 0 1 0 8 0 amappl11 160 42 0 32 1 0 1 1 0 8 0 amappl10 152 73 0 63 1 0 1 1 0 8 0 amappl9 144 484 0 480 1 0 1 1 0 8 0 amappl8 136 336 0 309 2 0 2 2 0 8 0 amappl7 128 68 0 61 1 0 1 1 0 8 0 amappl6 120 162 0 146 1 0 1 1 0 8 0 amappl5 112 284 0 267 1 0 1 1 0 8 0 amappl4 104 550 0 527 1 0 1 1 0 8 0 amappl3 96 152 0 136 1 0 1 1 0 8 0 amappl2 88 372 0 334 2 0 2 2 0 8 0 amappl1 80 9160 0 8692 12 0 12 12 0 8 2 amappl 88 2560 0 2401 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 2 0 0 1 0 1 1 0 8 0 uaddrrnd 24 346 0 326 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 346 0 326 1 0 1 1 0 8 0 vmmpekpl 168 6622 0 6591 2 0 2 2 0 8 0 vmmpepl 168 34848 0 33209 83 0 83 83 0 357 11 vmsppl 272 345 0 326 3 1 2 2 0 8 0 rwobjpl 24 11392 0 8741 16 0 16 16 0 8 0 pdppl 4096 698 0 652 74 20 54 56 0 8 8 pvpl 32 205828 0 192396 137 0 137 137 0 265 28 pmappl 216 345 0 326 2 0 2 2 0 8 0 extentpl 40 57 0 38 1 0 1 1 0 8 0 phpool 112 554 0 25 16 0 16 16 0 8 0 ddb> machine ddbcpu 0 No such command ddb> trace pppacopen(86338,1,2000,ffff80002166e000) at pppacopen+0x19f sys/net/if_pppx.c:1020 spec_open(ffff800027f631e8) at spec_open+0x3d7 sys/kern/spec_vnops.c:157 VOP_OPEN(fffffd806ae0e1e0,1,fffffd807f7d8840,ffff80002166e000) at VOP_OPEN+0x6c sys/kern/vfs_vops.c:138 vn_open(ffff800027f63438,1,0) at vn_open+0x467 sys/kern/vfs_vnops.c:183 doopenat(ffff80002166e000,ffffff9c,20000100,0,0,ffff800027f63620) at doopenat+0x26a sys/kern/vfs_syscalls.c:1128 syscall(ffff800027f63690) at syscall+0x44e sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x36ad457580, count: -7 ddb> machine ddbcpu 1 No such command ddb> trace pppacopen(86338,1,2000,ffff80002166e000) at pppacopen+0x19f sys/net/if_pppx.c:1020 spec_open(ffff800027f631e8) at spec_open+0x3d7 sys/kern/spec_vnops.c:157 VOP_OPEN(fffffd806ae0e1e0,1,fffffd807f7d8840,ffff80002166e000) at VOP_OPEN+0x6c sys/kern/vfs_vops.c:138 vn_open(ffff800027f63438,1,0) at vn_open+0x467 sys/kern/vfs_vnops.c:183 doopenat(ffff80002166e000,ffffff9c,20000100,0,0,ffff800027f63620) at doopenat+0x26a sys/kern/vfs_syscalls.c:1128 syscall(ffff800027f63690) at syscall+0x44e sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x36ad457580, count: -7