uvm_fault(0xfffffd806a7efab0, 0x608, 0, 2) -> e kernel: page fault trap, code=0 Stopped at pppacopen+0x19f: movq %r13,0x608 TID PID UID PRFLAGS PFLAGS CPU COMMAND *229840 62953 0 0 0x4000000 0 syz-executor.3 pppacopen(408633c,1,2000,ffff80002166f7a0) at pppacopen+0x19f sys/net/if_pppx.c:1020 spec_open(ffff800026756d98) at spec_open+0x3d7 sys/kern/spec_vnops.c:157 VOP_OPEN(fffffd8074437858,1,fffffd807f7d8900,ffff80002166f7a0) at VOP_OPEN+0x6c sys/kern/vfs_vops.c:138 vn_open(ffff800026756fe8,1,0) at vn_open+0x467 sys/kern/vfs_vnops.c:183 doopenat(ffff80002166f7a0,ffffff9c,20000040,0,0,ffff8000267571d0) at doopenat+0x26a sys/kern/vfs_syscalls.c:1128 syscall(ffff800026757240) at syscall+0x44e sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x43cae1948a0, 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(0xfffffd806a7efab0, 0x608, 0, 2) -> e ddb> trace pppacopen(408633c,1,2000,ffff80002166f7a0) at pppacopen+0x19f sys/net/if_pppx.c:1020 spec_open(ffff800026756d98) at spec_open+0x3d7 sys/kern/spec_vnops.c:157 VOP_OPEN(fffffd8074437858,1,fffffd807f7d8900,ffff80002166f7a0) at VOP_OPEN+0x6c sys/kern/vfs_vops.c:138 vn_open(ffff800026756fe8,1,0) at vn_open+0x467 sys/kern/vfs_vnops.c:183 doopenat(ffff80002166f7a0,ffffff9c,20000040,0,0,ffff8000267571d0) at doopenat+0x26a sys/kern/vfs_syscalls.c:1128 syscall(ffff800026757240) at syscall+0x44e sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x43cae1948a0, count: -7 ddb> show registers rdi 0xffff800024d52000 rsi 0x416 rbp 0xffff800026756d10 rbx 0 rdx 0xffff800024d52000 rcx 0x415 rax 0xffffffff81540f4f pppacopen+0x19f r8 0x6b0 r9 0xfffffd807f7d8900 r10 0x8206804b4913c0d4 r11 0xf946e143347d21e9 r12 0xfffffd8074437858 r13 0 r14 0x408633c __kernel_phys_end+0x168633c r15 0xffff800026756d98 rip 0xffffffff81540f4f pppacopen+0x19f cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff800026756cc0 ss 0x10 pppacopen+0x19f: movq %r13,0x608 ddb> show proc PROC (syz-executor.3) pid=229840 stat=onproc flags process=0 proc=4000000 pri=32, usrpri=50, nice=20 forw=0xffffffffffffffff, list=0xffff80002166e2a0,0xffffffff828ce7e0 process=0xffff800021718bd8 user=0xffff800026752000, vmspace=0xfffffd806a7efab0 estcpu=36, cpticks=1, pctcpu=0.0 user=0, sys=1, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 62953 492392 36512 0 2 0 syz-executor.3 *62953 229840 36512 0 7 0x4000000 syz-executor.3 43214 412923 7331 0 2 0x2 syz-executor.2 44357 263810 7331 0 2 0x482 syz-executor.1 39498 20226 7331 0 2 0x2 syz-executor.0 36512 334889 7331 0 3 0x82 nanoslp syz-executor.3 7331 86444 46622 0 3 0x82 thrsleep syz-fuzzer 7331 27048 46622 0 2 0x4000482 syz-fuzzer 7331 471047 46622 0 3 0x4000082 thrsleep syz-fuzzer 7331 358042 46622 0 3 0x4000082 thrsleep syz-fuzzer 7331 234831 46622 0 3 0x4000082 thrsleep syz-fuzzer 7331 350714 46622 0 3 0x4000082 kqread syz-fuzzer 46622 331081 44556 0 3 0x10008a sigsusp ksh 44556 172878 29589 0 3 0x9a poll sshd 77364 169159 1 0 3 0x100083 ttyin getty 29589 367336 1 0 3 0x88 poll sshd 81821 234928 35369 73 3 0x100090 kqread syslogd 35369 69603 1 0 3 0x100082 netio syslogd 66160 259577 1 0 3 0x100080 kqread resolvd 18248 385974 83045 77 3 0x100092 kqread dhcpleased 91911 232025 83045 77 3 0x100092 kqread dhcpleased 83045 468496 1 0 3 0x80 kqread dhcpleased 91200 331833 0 0 3 0x14200 bored smr 21916 94132 0 0 2 0x14200 zerothread 27448 1179 0 0 3 0x14200 aiodoned aiodoned 4872 226183 0 0 3 0x14200 syncer update 22191 311252 0 0 3 0x14200 cleaner cleaner 17428 453952 0 0 3 0x14200 reaper reaper 50333 464560 0 0 3 0x14200 pgdaemon pagedaemon 3999 455017 0 0 3 0x14200 bored viomb 37312 167089 0 0 3 0x40014200 acpi0 acpi0 36293 169870 0 0 3 0x14200 bored softnet 72879 363819 0 0 3 0x14200 bored systqmp 51461 469587 0 0 3 0x14200 bored systq 74821 23540 0 0 3 0x40014200 bored softclock 80590 510714 0 0 3 0x40014200 idle0 1 211075 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 10143 6392K 6713K 78643K 11352 0 pcb 13 8K 8K 78643K 42 0 rtable 154 5K 5K 78643K 240 0 ifaddr 53 12K 12K 78643K 53 0 counters 23 16K 16K 78643K 23 0 ioctlops 0 0K 4K 78643K 48 0 mount 1 1K 1K 78643K 1 0 log 0 0K 0K 78643K 4 0 vnodes 1233 78K 78K 78643K 1301 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 7 21K 45K 78643K 274 0 proc 57 55K 71K 78643K 339 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 11 0 in_multi 55 3K 3K 78643K 67 0 ether_multi 1 0K 0K 78643K 6 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 427 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 171 41K 42K 78643K 4421 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 14 0 NDP 7 0K 1K 78643K 15 0 temp 62 4182K 4246K 78643K 3935 0 kqueue 10 14K 16K 78643K 20 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 29 0 26 1 0 1 1 0 8 0 rtentry 112 67 0 1 2 0 2 2 0 8 0 unpcb 136 100 0 87 1 0 1 1 0 8 0 syncache 296 4 0 4 1 1 0 1 0 8 0 tcpcb 736 29 0 17 2 0 2 2 0 8 0 arp 88 10 0 0 1 0 1 1 0 8 0 inpcb 304 114 0 107 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 pfrktable 1344 1 0 0 1 0 1 1 0 8 0 pfrule 1360 15 0 7 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 1749 0 340 89 0 89 89 0 8 0 ffsino 240 1749 0 340 83 0 83 83 0 8 0 nchpl 144 2211 0 591 61 0 61 61 0 8 0 uvmvnodes 80 1833 0 0 38 0 38 38 0 8 0 vnodes 224 1833 0 0 108 0 108 108 0 8 0 namei 1024 5850 0 5849 1 0 1 1 0 8 0 scxspl 216 6146 0 6146 2 1 1 2 0 8 1 plimitpl 152 32 0 22 1 0 1 1 0 8 0 sigapl 424 495 0 464 5 0 5 5 0 8 1 futexpl 64 1058 0 1058 1 0 1 1 0 8 1 knotepl 112 256 0 206 2 0 2 2 0 8 0 kqueuepl 184 16 0 10 1 0 1 1 0 8 0 pipepl 304 85 0 69 2 0 2 2 0 8 0 fdescpl 432 482 0 464 3 0 3 3 0 8 0 filepl 120 1657 0 1511 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 96 127 0 117 1 0 1 1 0 8 0 zombiepl 144 464 0 463 1 0 1 1 0 8 0 processpl 1000 495 0 463 5 0 5 5 0 8 0 procpl 672 731 0 693 4 0 4 4 0 8 0 sockpl 448 243 0 220 4 0 4 4 0 8 1 mcl8k 8192 8 0 8 1 1 0 1 0 8 0 mcl4k 4096 4 0 4 1 1 0 1 0 8 0 mcl2k 2048 9995 0 9958 8 1 7 7 0 8 1 mtagpl 96 20 0 4 2 1 1 1 0 8 0 mbufpl 256 19958 0 19716 18 0 18 18 0 8 1 bufpl 288 3697 0 136 255 0 255 255 0 8 0 anonpl 24 98823 0 93251 40 0 40 40 0 188 1 amapchunkpl 152 10448 0 10081 20 1 19 19 0 158 3 amappl16 200 663 0 547 7 0 7 7 0 8 0 amappl15 192 52 0 52 1 0 1 1 0 8 1 amappl14 184 63 0 62 1 0 1 1 0 8 0 amappl13 176 96 0 93 1 0 1 1 0 8 0 amappl12 168 16 0 15 1 0 1 1 0 8 0 amappl11 160 42 0 30 1 0 1 1 0 8 0 amappl10 152 90 0 82 1 0 1 1 0 8 0 amappl9 144 461 0 458 1 0 1 1 0 8 0 amappl8 136 331 0 308 1 0 1 1 0 8 0 amappl7 128 69 0 61 1 0 1 1 0 8 0 amappl6 120 139 0 125 1 0 1 1 0 8 0 amappl5 112 392 0 378 1 0 1 1 0 8 0 amappl4 104 545 0 526 1 0 1 1 0 8 0 amappl3 96 204 0 187 1 0 1 1 0 8 0 amappl2 88 399 0 360 2 0 2 2 0 8 0 amappl1 80 11355 0 10920 12 0 12 12 0 8 2 amappl 88 4116 0 3989 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 24 482 0 464 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 482 0 464 1 0 1 1 0 8 0 vmmpekpl 168 7122 0 7098 2 0 2 2 0 8 0 vmmpepl 168 45192 0 43878 69 0 69 69 0 357 7 vmsppl 272 481 0 464 3 1 2 2 0 8 0 rwobjpl 24 13736 0 11085 17 0 17 17 0 8 0 pdppl 4096 970 0 928 72 24 48 54 0 8 6 pvpl 32 252014 0 243204 137 0 137 137 0 265 57 pmappl 216 481 0 464 2 0 2 2 0 8 0 extentpl 40 57 0 38 1 0 1 1 0 8 0 phpool 112 563 0 30 16 0 16 16 0 8 0 ddb> machine ddbcpu 0 No such command ddb> trace pppacopen(408633c,1,2000,ffff80002166f7a0) at pppacopen+0x19f sys/net/if_pppx.c:1020 spec_open(ffff800026756d98) at spec_open+0x3d7 sys/kern/spec_vnops.c:157 VOP_OPEN(fffffd8074437858,1,fffffd807f7d8900,ffff80002166f7a0) at VOP_OPEN+0x6c sys/kern/vfs_vops.c:138 vn_open(ffff800026756fe8,1,0) at vn_open+0x467 sys/kern/vfs_vnops.c:183 doopenat(ffff80002166f7a0,ffffff9c,20000040,0,0,ffff8000267571d0) at doopenat+0x26a sys/kern/vfs_syscalls.c:1128 syscall(ffff800026757240) at syscall+0x44e sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x43cae1948a0, count: -7 ddb> machine ddbcpu 1 No such command ddb> trace pppacopen(408633c,1,2000,ffff80002166f7a0) at pppacopen+0x19f sys/net/if_pppx.c:1020 spec_open(ffff800026756d98) at spec_open+0x3d7 sys/kern/spec_vnops.c:157 VOP_OPEN(fffffd8074437858,1,fffffd807f7d8900,ffff80002166f7a0) at VOP_OPEN+0x6c sys/kern/vfs_vops.c:138 vn_open(ffff800026756fe8,1,0) at vn_open+0x467 sys/kern/vfs_vnops.c:183 doopenat(ffff80002166f7a0,ffffff9c,20000040,0,0,ffff8000267571d0) at doopenat+0x26a sys/kern/vfs_syscalls.c:1128 syscall(ffff800026757240) at syscall+0x44e sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x43cae1948a0, count: -7