uvm_fault(0xfffffd806ae97bc0, 0x608, 0, 2) -> e kernel: page fault trap, code=0 Stopped at pppacopen+0x19f: movq %r13,0x608 TID PID UID PRFLAGS PFLAGS CPU COMMAND *139136 53524 0 0 0x4000000 0 syz-executor.0 pppacopen(86353,1,2000,ffff80002166fa40) at pppacopen+0x19f sys/net/if_pppx.c:1020 spec_open(ffff800027f5f138) at spec_open+0x3d7 sys/kern/spec_vnops.c:157 VOP_OPEN(fffffd8073587be0,1,fffffd807f7d88a0,ffff80002166fa40) at VOP_OPEN+0x6c sys/kern/vfs_vops.c:138 vn_open(ffff800027f5f388,1,0) at vn_open+0x467 sys/kern/vfs_vnops.c:183 doopenat(ffff80002166fa40,ffffff9c,20000040,0,0,ffff800027f5f570) at doopenat+0x26a sys/kern/vfs_syscalls.c:1128 syscall(ffff800027f5f5e0) at syscall+0x44e sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x68cf136ed60, 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(0xfffffd806ae97bc0, 0x608, 0, 2) -> e ddb> trace pppacopen(86353,1,2000,ffff80002166fa40) at pppacopen+0x19f sys/net/if_pppx.c:1020 spec_open(ffff800027f5f138) at spec_open+0x3d7 sys/kern/spec_vnops.c:157 VOP_OPEN(fffffd8073587be0,1,fffffd807f7d88a0,ffff80002166fa40) at VOP_OPEN+0x6c sys/kern/vfs_vops.c:138 vn_open(ffff800027f5f388,1,0) at vn_open+0x467 sys/kern/vfs_vnops.c:183 doopenat(ffff80002166fa40,ffffff9c,20000040,0,0,ffff800027f5f570) at doopenat+0x26a sys/kern/vfs_syscalls.c:1128 syscall(ffff800027f5f5e0) at syscall+0x44e sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x68cf136ed60, count: -7 ddb> show registers rdi 0xffff8000216e0000 rsi 0x419 rbp 0xffff800027f5f0b0 rbx 0 rdx 0xffff8000216e0000 rcx 0x418 rax 0xffffffff81540f4f pppacopen+0x19f r8 0x6b0 r9 0xfffffd807f7d88a0 r10 0x79e52671f164e802 r11 0xef3cb3fe95518757 r12 0xfffffd8073587be0 r13 0 r14 0x86353 acpi_pdirpa+0x721bb r15 0xffff800027f5f138 rip 0xffffffff81540f4f pppacopen+0x19f cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff800027f5f060 ss 0x10 pppacopen+0x19f: movq %r13,0x608 ddb> show proc PROC (syz-executor.0) pid=139136 stat=onproc flags process=0 proc=4000000 pri=32, usrpri=77, nice=20 forw=0xffffffffffffffff, list=0xffff80002166ed20,0xffffffff828ce7e0 process=0xffff8000216d8bd8 user=0xffff800027f5a000, vmspace=0xfffffd806ae97bc0 estcpu=27, cpticks=1, pctcpu=0.0 user=0, sys=1, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 53524 155693 84169 0 2 0 syz-executor.0 *53524 139136 84169 0 7 0x4000000 syz-executor.0 45562 270563 46288 0 2 0 syz-executor.3 45562 426237 46288 0 3 0x4000080 fsleep syz-executor.3 1702 222129 53272 0 2 0 syz-executor.1 1702 114038 53272 0 2 0x4000000 syz-executor.1 61348 487930 13699 0 2 0 syz-executor.2 61348 226201 13699 0 2 0x4000000 syz-executor.2 61348 337061 13699 0 3 0x4000080 fsleep syz-executor.2 61554 241958 0 0 3 0x14200 bored sosplice 46288 155226 48139 0 3 0x82 nanoslp syz-executor.3 53272 203689 48139 0 3 0x82 nanoslp syz-executor.1 13699 131611 48139 0 3 0x82 nanoslp syz-executor.2 84169 428964 48139 0 3 0x82 nanoslp syz-executor.0 48139 201278 40314 0 3 0x82 thrsleep syz-fuzzer 48139 33834 40314 0 3 0x4000082 thrsleep syz-fuzzer 48139 55486 40314 0 3 0x4000082 thrsleep syz-fuzzer 48139 411475 40314 0 3 0x4000082 thrsleep syz-fuzzer 48139 511737 40314 0 3 0x4000082 thrsleep syz-fuzzer 48139 244238 40314 0 3 0x4000082 thrsleep syz-fuzzer 48139 252445 40314 0 3 0x4000082 kqread syz-fuzzer 40314 83624 78690 0 3 0x10008a sigsusp ksh 78690 7092 62468 0 3 0x9a poll sshd 96590 50299 1 0 3 0x100083 ttyin getty 62468 238209 1 0 3 0x88 poll sshd 58109 170197 10220 73 3 0x100090 kqread syslogd 10220 330258 1 0 3 0x100082 netio syslogd 78137 109839 1 0 3 0x100080 kqread resolvd 3517 108098 92764 77 3 0x100092 kqread dhcpleased 28980 330125 92764 77 3 0x100092 kqread dhcpleased 92764 126540 1 0 3 0x80 kqread dhcpleased 12094 370531 0 0 3 0x14200 bored smr 20173 510621 0 0 2 0x14200 zerothread 24072 402419 0 0 3 0x14200 aiodoned aiodoned 94562 475444 0 0 3 0x14200 syncer update 17988 118603 0 0 3 0x14200 cleaner cleaner 89741 160681 0 0 3 0x14200 reaper reaper 17657 325259 0 0 3 0x14200 pgdaemon pagedaemon 7514 167443 0 0 3 0x14200 bored viomb 78302 352897 0 0 3 0x40014200 acpi0 acpi0 76956 94851 0 0 3 0x14200 bored softnet 40963 282525 0 0 3 0x14200 bored systqmp 84780 418696 0 0 3 0x14200 bored systq 40672 21210 0 0 3 0x40014200 bored softclock 76464 221468 0 0 3 0x40014200 idle0 1 138008 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 10146 6389K 6972K 78643K 11706 0 pcb 13 8K 8K 78643K 113 0 rtable 150 4K 4K 78643K 299 0 ifaddr 54 12K 12K 78643K 54 0 counters 23 16K 16K 78643K 23 0 ioctlops 0 0K 2K 78643K 51 0 mount 1 1K 1K 78643K 1 0 log 0 0K 0K 78643K 4 0 vnodes 1236 78K 78K 78643K 1364 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 12 0K 1K 78643K 167 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1697 195K 286K 78643K 12598 0 file desc 10 33K 41K 78643K 628 0 sigio 0 0K 0K 78643K 16 0 proc 57 55K 71K 78643K 355 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 7 0 in_multi 55 3K 3K 78643K 67 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 61 281K 281K 78643K 61 0 exec 0 0K 2K 78643K 431 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 210 41K 41K 78643K 8510 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 82 0 NDP 7 0K 1K 78643K 15 0 temp 52 4179K 4243K 78643K 4891 0 kqueue 10 14K 18K 78643K 82 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 89 0 86 1 0 1 1 0 8 0 rtentry 112 67 0 1 2 0 2 2 0 8 0 unpcb 136 57 0 44 1 0 1 1 0 8 0 syncache 296 17 0 17 2 1 1 1 0 8 1 tcpcb 736 93 0 89 6 2 4 4 0 8 3 arp 88 10 0 0 1 0 1 1 0 8 0 ipq 40 10 0 10 1 0 1 1 0 8 1 ipqe 40 440 0 440 1 0 1 1 0 8 1 inpcb 304 397 0 390 2 0 2 2 0 8 1 nd6 48 12 0 0 1 0 1 1 0 8 0 kcovpl 48 4 0 0 1 0 1 1 0 8 0 pfstscr 40 10 0 9 1 0 1 1 0 8 0 pfosfp 40 4 0 3 1 0 1 1 0 8 0 pfosfpen 112 4 0 3 1 0 1 1 0 8 0 pfstitem 24 2 0 0 1 0 1 1 0 8 0 pfstkey 112 20 0 18 1 0 1 1 0 8 0 pfstate 320 10 0 9 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 semupl 112 5 0 5 1 1 0 1 0 8 0 semapl 112 160 0 150 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 2080 0 657 90 0 90 90 0 8 0 ffsino 240 2080 0 657 84 0 84 84 0 8 0 nchpl 144 2968 0 1351 61 0 61 61 0 8 0 uvmvnodes 80 2242 0 0 46 0 46 46 0 8 0 vnodes 224 2242 0 0 132 0 132 132 0 8 0 namei 1024 7808 0 7808 1 0 1 1 0 8 1 scxspl 216 8550 0 8550 9 6 3 8 0 8 3 plimitpl 152 22 0 12 1 0 1 1 0 8 0 sigapl 424 850 0 815 5 1 4 5 0 8 0 futexpl 64 4776 0 4774 1 0 1 1 0 8 0 knotepl 112 275 0 225 2 0 2 2 0 8 0 kqueuepl 184 97 0 89 1 0 1 1 0 8 0 pipepl 304 150 0 134 2 0 2 2 0 8 0 fdescpl 432 836 0 815 3 0 3 3 0 8 0 filepl 120 2892 0 2744 5 0 5 5 0 8 0 lockfpl 104 76 0 74 1 0 1 1 0 8 0 lockfspl 48 45 0 43 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 96 363 0 353 1 0 1 1 0 8 0 zombiepl 144 815 0 815 1 0 1 1 0 8 1 processpl 1000 850 0 815 5 0 5 5 0 8 0 procpl 672 1429 0 1383 4 0 4 4 0 8 0 sosppl 168 22 0 22 1 1 0 1 0 8 0 sockpl 448 543 0 507 6 1 5 5 0 8 0 mcl64k 65536 10 0 10 1 0 1 1 0 8 1 mcl9k 9216 4 0 4 1 1 0 1 0 8 0 mcl8k 8192 12 0 12 1 1 0 1 0 8 0 mcl4k 4096 62 0 62 2 1 1 1 0 8 1 mcl2k 2048 8747 0 8711 10 1 9 9 0 8 4 mtagpl 96 72 0 14 3 1 2 2 0 8 0 mbufpl 256 25992 0 25696 35 6 29 35 0 8 8 bufpl 288 4085 0 135 283 0 283 283 0 8 0 anonpl 24 199706 0 190198 83 0 83 83 0 188 19 amapchunkpl 152 19983 0 19496 21 1 20 20 0 158 0 amappl16 200 2322 0 2023 29 0 29 29 0 8 9 amappl15 192 5 0 2 1 0 1 1 0 8 0 amappl14 184 138 0 136 1 0 1 1 0 8 0 amappl13 176 192 0 188 1 0 1 1 0 8 0 amappl12 168 158 0 155 1 0 1 1 0 8 0 amappl11 160 43 0 32 1 0 1 1 0 8 0 amappl10 152 40 0 35 1 0 1 1 0 8 0 amappl9 144 622 0 618 1 0 1 1 0 8 0 amappl8 136 335 0 311 1 0 1 1 0 8 0 amappl7 128 70 0 62 1 0 1 1 0 8 0 amappl6 120 289 0 273 1 0 1 1 0 8 0 amappl5 112 448 0 433 1 0 1 1 0 8 0 amappl4 104 557 0 534 1 0 1 1 0 8 0 amappl3 96 451 0 429 1 0 1 1 0 8 0 amappl2 88 643 0 599 2 0 2 2 0 8 0 amappl1 80 17124 0 16645 12 2 10 12 0 8 0 amappl 88 8183 0 8019 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 24 836 0 815 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 836 0 815 1 0 1 1 0 8 0 vmmpekpl 168 9056 0 9035 2 0 2 2 0 8 0 vmmpepl 168 76858 0 75085 93 5 88 88 0 357 9 vmsppl 272 835 0 815 3 1 2 2 0 8 0 rwobjpl 24 21417 0 18118 22 0 22 22 0 8 0 pdppl 4096 1678 0 1630 69 21 48 52 0 8 0 pvpl 32 421673 0 408085 168 21 147 147 0 265 31 pmappl 216 835 0 815 2 0 2 2 0 8 0 extentpl 40 57 0 38 1 0 1 1 0 8 0 phpool 112 616 0 36 17 0 17 17 0 8 0 ddb> machine ddbcpu 0 No such command ddb> trace pppacopen(86353,1,2000,ffff80002166fa40) at pppacopen+0x19f sys/net/if_pppx.c:1020 spec_open(ffff800027f5f138) at spec_open+0x3d7 sys/kern/spec_vnops.c:157 VOP_OPEN(fffffd8073587be0,1,fffffd807f7d88a0,ffff80002166fa40) at VOP_OPEN+0x6c sys/kern/vfs_vops.c:138 vn_open(ffff800027f5f388,1,0) at vn_open+0x467 sys/kern/vfs_vnops.c:183 doopenat(ffff80002166fa40,ffffff9c,20000040,0,0,ffff800027f5f570) at doopenat+0x26a sys/kern/vfs_syscalls.c:1128 syscall(ffff800027f5f5e0) at syscall+0x44e sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x68cf136ed60, count: -7 ddb> machine ddbcpu 1 No such command ddb> trace pppacopen(86353,1,2000,ffff80002166fa40) at pppacopen+0x19f sys/net/if_pppx.c:1020 spec_open(ffff800027f5f138) at spec_open+0x3d7 sys/kern/spec_vnops.c:157 VOP_OPEN(fffffd8073587be0,1,fffffd807f7d88a0,ffff80002166fa40) at VOP_OPEN+0x6c sys/kern/vfs_vops.c:138 vn_open(ffff800027f5f388,1,0) at vn_open+0x467 sys/kern/vfs_vnops.c:183 doopenat(ffff80002166fa40,ffffff9c,20000040,0,0,ffff800027f5f570) at doopenat+0x26a sys/kern/vfs_syscalls.c:1128 syscall(ffff800027f5f5e0) at syscall+0x44e sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x68cf136ed60, count: -7