uvm_fault(0xfffffd8073b7d000, 0x608, 0, 2) -> e kernel: page fault trap, code=0 Stopped at pppacopen+0x19f: movq %r13,0x608 TID PID UID PRFLAGS PFLAGS CPU COMMAND *453267 78561 0 0 0x4000000 0 syz-executor.3 pppacopen(4086331,1,2000,ffff80002166e000) at pppacopen+0x19f sys/net/if_pppx.c:1020 spec_open(ffff800024b47588) at spec_open+0x3d7 sys/kern/spec_vnops.c:157 VOP_OPEN(fffffd8077847558,1,fffffd807f7d8660,ffff80002166e000) at VOP_OPEN+0x6c sys/kern/vfs_vops.c:138 vn_open(ffff800024b477d8,1,0) at vn_open+0x467 sys/kern/vfs_vnops.c:183 doopenat(ffff80002166e000,ffffff9c,20000100,0,0,ffff800024b479c0) at doopenat+0x26a sys/kern/vfs_syscalls.c:1128 syscall(ffff800024b47a30) at syscall+0x44e sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x686d2df8e40, 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(0xfffffd8073b7d000, 0x608, 0, 2) -> e ddb> trace pppacopen(4086331,1,2000,ffff80002166e000) at pppacopen+0x19f sys/net/if_pppx.c:1020 spec_open(ffff800024b47588) at spec_open+0x3d7 sys/kern/spec_vnops.c:157 VOP_OPEN(fffffd8077847558,1,fffffd807f7d8660,ffff80002166e000) at VOP_OPEN+0x6c sys/kern/vfs_vops.c:138 vn_open(ffff800024b477d8,1,0) at vn_open+0x467 sys/kern/vfs_vnops.c:183 doopenat(ffff80002166e000,ffffff9c,20000100,0,0,ffff800024b479c0) at doopenat+0x26a sys/kern/vfs_syscalls.c:1128 syscall(ffff800024b47a30) at syscall+0x44e sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x686d2df8e40, count: -7 ddb> show registers rdi 0xffff8000216e0000 rsi 0x3a5 rbp 0xffff800024b47500 rbx 0 rdx 0xffff8000216e0000 rcx 0x3a4 rax 0xffffffff81540f4f pppacopen+0x19f r8 0x6b0 r9 0xfffffd807f7d8660 r10 0x1e034134fa7fd9 r11 0x303364da11fa0927 r12 0xfffffd8077847558 r13 0 r14 0x4086331 __kernel_phys_end+0x1686331 r15 0xffff800024b47588 rip 0xffffffff81540f4f pppacopen+0x19f cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff800024b474b0 ss 0x10 pppacopen+0x19f: movq %r13,0x608 ddb> show proc PROC (syz-executor.3) pid=453267 stat=onproc flags process=0 proc=4000000 pri=32, usrpri=80, nice=20 forw=0xffffffffffffffff, list=0xffff80002166e540,0xffff80002166f7b0 process=0xffff8000216d8020 user=0xffff800024b42000, vmspace=0xfffffd8073b7d000 estcpu=36, cpticks=0, pctcpu=0.0 user=0, sys=0, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 3814 165302 49833 0 2 0 syz-executor.0 3814 420970 49833 0 2 0x4000000 syz-executor.0 78561 442952 41975 0 2 0 syz-executor.3 *78561 453267 41975 0 7 0x4000000 syz-executor.3 40816 211290 7033 0 2 0 syz-executor.2 40816 434220 7033 0 3 0x4000080 fsleep syz-executor.2 7033 29125 35280 0 3 0x82 nanoslp syz-executor.2 79723 135388 0 0 3 0x14200 bored sosplice 4406 255730 35280 0 2 0x2 syz-executor.1 49833 91064 35280 0 3 0x82 nanoslp syz-executor.0 41975 469077 35280 0 3 0x82 nanoslp syz-executor.3 35280 251676 30164 0 3 0x82 thrsleep syz-fuzzer 35280 454641 30164 0 3 0x4000082 thrsleep syz-fuzzer 35280 157228 30164 0 3 0x4000082 thrsleep syz-fuzzer 35280 13222 30164 0 3 0x4000082 thrsleep syz-fuzzer 35280 470752 30164 0 3 0x4000082 thrsleep syz-fuzzer 35280 124087 30164 0 3 0x4000082 kqread syz-fuzzer 30164 475061 28550 0 3 0x10008a sigsusp ksh 28550 238149 93651 0 3 0x9a poll sshd 8080 495931 1 0 3 0x100083 ttyin getty 93651 132893 1 0 3 0x88 poll sshd 4061 166804 84909 73 3 0x100090 kqread syslogd 84909 301341 1 0 3 0x100082 netio syslogd 56697 288354 1 0 3 0x100080 kqread resolvd 12462 186200 65629 77 3 0x100092 kqread dhcpleased 96519 471183 65629 77 3 0x100092 kqread dhcpleased 65629 329734 1 0 3 0x80 kqread dhcpleased 7691 254793 0 0 3 0x14200 bored smr 40127 160732 0 0 2 0x14200 zerothread 68623 447750 0 0 3 0x14200 aiodoned aiodoned 8553 164188 0 0 3 0x14200 syncer update 80344 116432 0 0 3 0x14200 cleaner cleaner 93806 434198 0 0 3 0x14200 reaper reaper 55748 309954 0 0 3 0x14200 pgdaemon pagedaemon 18420 94075 0 0 3 0x14200 bored viomb 41787 255572 0 0 3 0x40014200 acpi0 acpi0 25726 111317 0 0 3 0x14200 bored softnet 88538 209764 0 0 3 0x14200 bored systqmp 40237 382767 0 0 3 0x14200 bored systq 21226 63208 0 0 3 0x40014200 bored softclock 99498 61844 0 0 3 0x40014200 idle0 1 289964 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 10152 6401K 7432K 78643K 13599 0 pcb 13 8K 8K 78643K 277 0 rtable 152 5K 10K 78643K 991 0 ifaddr 54 12K 14K 78643K 387 0 counters 23 16K 17K 78643K 44 0 ioctlops 0 0K 4K 78643K 176 0 iov 0 0K 48K 78643K 79 0 mount 1 1K 1K 78643K 1 0 log 0 0K 0K 78643K 4 0 vnodes 1242 78K 78K 78643K 2222 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 5K 78643K 18 0 VM map 2 0K 0K 78643K 2 0 sem 12 0K 0K 78643K 131 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1697 195K 286K 78643K 12598 0 file desc 9 29K 49K 78643K 2754 0 sigio 0 0K 0K 78643K 7 0 proc 58 55K 87K 78643K 488 0 subproc 52 3K 3K 78643K 78 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 0 0K 0K 78643K 234 0 in_multi 55 3K 4K 78643K 300 0 ether_multi 1 0K 0K 78643K 73 0 mrt 1 0K 0K 78643K 57 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 91 413K 413K 78643K 91 0 exec 0 0K 2K 78643K 535 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 251 270K 271K 78643K 33675 0 UVM aobj 19 2K 2K 78643K 19 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 172 0 NDP 7 0K 1K 78643K 62 0 temp 93 4193K 4259K 78643K 15384 0 kqueue 10 14K 20K 78643K 105 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 120 135 0 132 1 0 1 1 0 8 0 rtentry 112 124 0 58 2 0 2 2 0 8 0 unpcb 136 954 0 941 1 0 1 1 0 8 0 syncache 296 76 0 76 3 2 1 1 0 8 1 tcpqe 32 39 0 39 2 1 1 1 0 8 1 tcpcb 736 559 0 540 9 6 3 6 0 8 0 arp 88 14 0 4 1 0 1 1 0 8 0 inpcb 304 1391 0 1378 6 4 2 5 0 8 0 rttmr 72 13 0 13 2 1 1 1 0 8 1 nd6 48 40 0 28 1 0 1 1 0 8 0 pkpcb 40 15 0 15 3 2 1 1 0 8 1 kcovpl 48 6 0 2 1 0 1 1 0 8 0 pfstscr 40 4 0 4 1 1 0 1 0 8 0 pfrktable 1344 267 0 266 1 0 1 1 0 8 0 pftag 88 57 0 57 2 1 1 1 0 8 1 pfstkey 112 8 0 8 1 1 0 1 0 8 0 pfstate 320 4 0 4 1 1 0 1 0 8 0 pfrule 1360 48 0 40 1 0 1 1 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 371 0 92 18 0 18 18 0 8 0 art_table 32 372 0 92 3 0 3 3 0 8 0 art_node 16 123 0 63 1 0 1 1 0 8 0 sysvmsgpl 40 42 0 39 2 1 1 1 0 8 0 semupl 112 10 0 10 1 1 0 1 0 8 0 semapl 112 129 0 119 1 0 1 1 0 8 0 shmpl 112 16 0 0 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 5291 0 3877 90 0 90 90 0 8 0 ffsino 240 5291 0 3877 84 0 84 84 0 8 0 nchpl 144 8808 0 7226 61 0 61 61 0 8 0 uvmvnodes 80 5926 0 0 121 0 121 121 0 8 0 vnodes 224 5926 0 0 349 0 349 349 0 8 0 namei 1024 22299 0 22299 2 1 1 2 0 8 1 vcpupl 1984 14 0 0 2 0 2 2 0 8 0 vmpool 528 29 0 15 3 1 2 2 0 8 1 pfiaddrpl 120 78 0 78 2 1 1 1 0 8 1 scxspl 216 25136 0 25136 9 8 1 8 0 8 1 plimitpl 152 105 0 95 1 0 1 1 0 8 0 sigapl 424 2965 0 2931 5 1 4 5 0 8 0 futexpl 64 19770 0 19769 1 0 1 1 0 8 0 knotepl 112 646 0 596 2 0 2 2 0 8 0 kqueuepl 184 393 0 387 1 0 1 1 0 8 0 pipepl 304 207 0 191 2 0 2 2 0 8 0 fdescpl 432 2951 0 2931 3 0 3 3 0 8 0 filepl 120 10200 0 10053 6 0 6 6 0 8 1 lockfpl 104 506 0 504 1 0 1 1 0 8 0 lockfspl 48 187 0 185 1 0 1 1 0 8 0 sessionpl 144 21 0 9 1 0 1 1 0 8 0 pgrppl 48 31 0 19 1 0 1 1 0 8 0 ucredpl 96 1706 0 1696 1 0 1 1 0 8 0 zombiepl 144 2931 0 2931 1 0 1 1 0 8 1 processpl 1000 2965 0 2931 5 0 5 5 0 8 0 procpl 672 6016 0 5974 8 3 5 5 0 8 1 sosppl 168 30 0 25 2 1 1 1 0 8 0 sockpl 448 2499 0 2470 12 7 5 9 0 8 1 mcl16k 16384 4 0 4 1 0 1 1 0 8 1 mcl12k 12288 1 0 1 1 1 0 1 0 8 0 mcl9k 9216 59 0 59 4 3 1 1 0 8 1 mcl8k 8192 53 0 53 4 3 1 1 0 8 1 mcl4k 4096 96 0 96 4 3 1 1 0 8 1 mcl2k2 2112 26 0 26 1 1 0 1 0 8 0 mcl2k 2048 15132 0 15087 14 4 10 10 0 8 3 mtagpl 96 225 0 39 6 1 5 5 0 8 0 mbufpl 256 63007 0 62325 47 2 45 45 0 8 0 bufpl 288 8064 0 1647 459 0 459 459 0 8 0 anonpl 24 739326 0 732529 90 23 67 67 0 188 19 amapchunkpl 152 79348 0 78916 27 8 19 20 0 158 1 amappl16 200 6916 0 6760 34 16 18 21 0 8 8 amappl15 192 9 0 8 1 0 1 1 0 8 0 amappl14 184 5 0 2 1 0 1 1 0 8 0 amappl13 176 714 0 711 1 0 1 1 0 8 0 amappl12 168 331 0 327 1 0 1 1 0 8 0 amappl11 160 42 0 32 1 0 1 1 0 8 0 amappl10 152 439 0 430 1 0 1 1 0 8 0 amappl9 144 1104 0 1099 1 0 1 1 0 8 0 amappl8 136 1056 0 1018 2 0 2 2 0 8 0 amappl7 128 737 0 728 1 0 1 1 0 8 0 amappl6 120 801 0 787 1 0 1 1 0 8 0 amappl5 112 2270 0 2256 1 0 1 1 0 8 0 amappl4 104 621 0 595 1 0 1 1 0 8 0 amappl3 96 1244 0 1225 1 0 1 1 0 8 0 amappl2 88 1398 0 1354 2 0 2 2 0 8 0 amappl1 80 51053 0 50593 12 1 11 12 0 8 1 amappl 88 33179 0 33010 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 18 0 0 1 0 1 1 0 8 0 uaddrrnd 24 2980 0 2946 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 2980 0 2946 1 0 1 1 0 8 0 vmmpekpl 168 17511 0 17483 2 0 2 2 0 8 0 vmmpepl 168 260141 0 258577 97 14 83 83 0 357 12 vmsppl 272 2979 0 2946 4 1 3 3 0 8 0 rwobjpl 24 63980 0 57109 42 0 42 42 0 8 0 pdppl 4096 5966 0 5906 91 29 62 63 0 8 2 pvpl 32 1358288 0 1347959 212 88 124 137 0 265 31 pmappl 216 2979 0 2946 2 0 2 2 0 8 0 extentpl 40 57 0 38 1 0 1 1 0 8 0 phpool 112 847 0 58 23 0 23 23 0 8 0 ddb> machine ddbcpu 0 No such command ddb> trace pppacopen(4086331,1,2000,ffff80002166e000) at pppacopen+0x19f sys/net/if_pppx.c:1020 spec_open(ffff800024b47588) at spec_open+0x3d7 sys/kern/spec_vnops.c:157 VOP_OPEN(fffffd8077847558,1,fffffd807f7d8660,ffff80002166e000) at VOP_OPEN+0x6c sys/kern/vfs_vops.c:138 vn_open(ffff800024b477d8,1,0) at vn_open+0x467 sys/kern/vfs_vnops.c:183 doopenat(ffff80002166e000,ffffff9c,20000100,0,0,ffff800024b479c0) at doopenat+0x26a sys/kern/vfs_syscalls.c:1128 syscall(ffff800024b47a30) at syscall+0x44e sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x686d2df8e40, count: -7 ddb> machine ddbcpu 1 No such command ddb> trace pppacopen(4086331,1,2000,ffff80002166e000) at pppacopen+0x19f sys/net/if_pppx.c:1020 spec_open(ffff800024b47588) at spec_open+0x3d7 sys/kern/spec_vnops.c:157 VOP_OPEN(fffffd8077847558,1,fffffd807f7d8660,ffff80002166e000) at VOP_OPEN+0x6c sys/kern/vfs_vops.c:138 vn_open(ffff800024b477d8,1,0) at vn_open+0x467 sys/kern/vfs_vnops.c:183 doopenat(ffff80002166e000,ffffff9c,20000100,0,0,ffff800024b479c0) at doopenat+0x26a sys/kern/vfs_syscalls.c:1128 syscall(ffff800024b47a30) at syscall+0x44e sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x686d2df8e40, count: -7