uvm_fault(0xfffffd806c5b8460, 0x668, 0, 2) -> e kernel: page fault trap, code=0 Stopped at pppacopen+0x1b5: movq %r13,0x668 TID PID UID PRFLAGS PFLAGS CPU COMMAND 28824 16981 0 0 0 0 syz-executor.0 *323023 16981 0 0 0x4000000 1K syz-executor.0 pppacopen(86353,1,2000,ffff8000246a37a8) at pppacopen+0x1b5 sys/net/if_pppx.c:1020 spec_open(ffff800027b0dba8) at spec_open+0x3d7 sys/kern/spec_vnops.c:157 VOP_OPEN(fffffd80649634c0,1,fffffd807f7d78a0,ffff8000246a37a8) at VOP_OPEN+0x75 sys/kern/vfs_vops.c:138 vn_open(ffff800027b0ddf8,1,0) at vn_open+0x467 sys/kern/vfs_vnops.c:183 doopenat(ffff8000246a37a8,ffffff9c,20000780,0,0,ffff800027b0dfe0) at doopenat+0x26a sys/kern/vfs_syscalls.c:1128 syscall(ffff800027b0e050) at syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800027b0e050) at syscall+0x489 sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x10573c723d0, 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{1}> ddb{1}> set $lines = 0 ddb{1}> set $maxwidth = 0 ddb{1}> show panic *cpu1: uvm_fault(0xfffffd806c5b8460, 0x668, 0, 2) -> e ddb{1}> trace pppacopen(86353,1,2000,ffff8000246a37a8) at pppacopen+0x1b5 sys/net/if_pppx.c:1020 spec_open(ffff800027b0dba8) at spec_open+0x3d7 sys/kern/spec_vnops.c:157 VOP_OPEN(fffffd80649634c0,1,fffffd807f7d78a0,ffff8000246a37a8) at VOP_OPEN+0x75 sys/kern/vfs_vops.c:138 vn_open(ffff800027b0ddf8,1,0) at vn_open+0x467 sys/kern/vfs_vnops.c:183 doopenat(ffff8000246a37a8,ffffff9c,20000780,0,0,ffff800027b0dfe0) at doopenat+0x26a sys/kern/vfs_syscalls.c:1128 syscall(ffff800027b0e050) at syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800027b0e050) at syscall+0x489 sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x10573c723d0, count: -7 ddb{1}> show registers rdi 0xffff800021491000 rsi 0x972 rbp 0xffff800027b0db20 rbx 0 rdx 0xffff800021491000 rcx 0x971 rax 0xffffffff81c79ee5 pppacopen+0x1b5 r8 0x770 r9 0xfffffd807f7d78a0 r10 0xc34562e87743208f r11 0xa068749dcf1767e r12 0xfffffd80649634c0 r13 0 r14 0x86353 acpi_pdirpa+0x721bb r15 0xffff800027b0dba8 rip 0xffffffff81c79ee5 pppacopen+0x1b5 cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff800027b0dad0 ss 0x10 pppacopen+0x1b5: movq %r13,0x668 ddb{1}> show proc PROC (syz-executor.0) pid=323023 stat=onproc flags process=0 proc=4000000 pri=32, usrpri=86, nice=20 forw=0xffffffffffffffff, list=0xffff8000246a27e8,0xffffffff8293ceb0 process=0xffff8000ffff8008 user=0xffff800027b09000, vmspace=0xfffffd806c5b8460 estcpu=36, cpticks=1, pctcpu=0.0 user=0, sys=1, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 94993 495890 92696 0 2 0 syz-executor.3 16981 28824 2857 0 7 0 syz-executor.0 *16981 323023 2857 0 7 0x4000000 syz-executor.0 40985 197087 59855 0 2 0 syz-executor.1 51656 349360 80086 60928 2 0x10 syz-executor.2 51656 226090 80086 60928 3 0x4000090 poll syz-executor.2 51656 168711 80086 60928 3 0x4000090 fsleep syz-executor.2 92696 142989 32506 0 3 0x82 nanoslp syz-executor.3 80928 179122 0 0 3 0x14200 bored sosplice 80086 466705 32506 0 3 0x82 nanoslp syz-executor.2 59855 506676 32506 0 3 0x82 nanoslp syz-executor.1 2857 152746 32506 0 3 0x82 nanoslp syz-executor.0 32506 457837 66391 0 3 0x82 thrsleep syz-fuzzer 32506 176351 66391 0 3 0x4000082 thrsleep syz-fuzzer 32506 62231 66391 0 3 0x4000082 thrsleep syz-fuzzer 32506 502560 66391 0 3 0x4000082 thrsleep syz-fuzzer 32506 68883 66391 0 3 0x4000082 kqread syz-fuzzer 32506 194469 66391 0 3 0x4000082 thrsleep syz-fuzzer 32506 505938 66391 0 3 0x4000082 thrsleep syz-fuzzer 32506 240853 66391 0 3 0x4000082 thrsleep syz-fuzzer 66391 443365 58348 0 3 0x10008a sigsusp ksh 58348 294238 36535 0 3 0x9a poll sshd 14026 322436 1 0 3 0x100083 ttyin getty 36535 325658 1 0 3 0x88 poll sshd 95749 111397 82302 74 3 0x100092 bpf pflogd 82302 521747 1 0 3 0x80 netio pflogd 4557 118307 98923 73 3 0x100090 kqread syslogd 98923 391339 1 0 3 0x100082 netio syslogd 84900 446381 1 0 3 0x100080 kqread resolvd 45555 472045 62937 77 3 0x100092 kqread dhcpleased 24446 464693 62937 77 3 0x100092 kqread dhcpleased 62937 367961 1 0 3 0x80 kqread dhcpleased 84538 147908 0 0 3 0x14200 bored smr 72441 174829 0 0 2 0x14200 zerothread 82764 266842 0 0 3 0x14200 aiodoned aiodoned 36784 478650 0 0 3 0x14200 syncer update 76487 163855 0 0 3 0x14200 cleaner cleaner 76262 287914 0 0 3 0x14200 reaper reaper 5360 352520 0 0 3 0x14200 pgdaemon pagedaemon 22996 271549 0 0 3 0x14200 bored viomb 29088 234778 0 0 3 0x40014200 acpi0 acpi0 39451 325932 0 0 3 0x40014200 idle1 60526 126708 0 0 3 0x14200 bored softnet 95530 251068 0 0 3 0x14200 bored systqmp 80101 414593 0 0 3 0x14200 bored systq 54780 338455 0 0 3 0x40014200 bored softclock 9703 258901 0 0 3 0x40014200 idle0 1 244390 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{1}> show all locks Process 16981 (syz-executor.0) thread 0xffff8000246a37a8 (323023) exclusive kernel_lock &kernel_lock r = 1 (0xffffffff828f9c10) #0 witness_lock+0x44d #1 syscall+0x3ef mi_syscall sys/sys/syscall_mi.h:93 [inline] #1 syscall+0x3ef sys/arch/amd64/amd64/trap.c:585 #2 Xsyscall+0x128 ddb{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10166 6530K 6851K 78643K 12124 0 pcb 13 8K 8K 78643K 79 0 rtable 152 5K 5K 78643K 294 0 ifaddr 58 13K 13K 78643K 93 0 sysctl 2 0K 0K 78643K 2 0 counters 48 34K 34K 78643K 60 0 ioctlops 0 0K 4K 78643K 1552 0 iov 0 0K 8K 78643K 11 0 mount 1 1K 1K 78643K 1 0 log 0 0K 0K 78643K 5 0 vnodes 1236 78K 78K 78643K 1514 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 1K 1K 78643K 2 0 sem 9 0K 1K 78643K 15 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1697 195K 286K 78643K 12598 0 file desc 10 33K 49K 78643K 1041 0 proc 70 87K 124K 78643K 485 0 subproc 52 3K 3K 78643K 65 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 0 0K 0K 78643K 93 0 in_multi 55 3K 3K 78643K 111 0 ether_multi 1 0K 0K 78643K 23 0 mrt 1 0K 0K 78643K 5 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 43 201K 201K 78643K 43 0 exec 0 0K 2K 78643K 507 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 259 159K 160K 78643K 13676 0 UVM aobj 20 2K 2K 78643K 20 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 46 0 NDP 8 0K 1K 78643K 24 0 temp 58 4191K 4256K 78643K 6091 0 kqueue 10 14K 18K 78643K 83 0 SYN cache 2 16K 16K 78643K 2 0 ddb{1}> show all pools Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle plcache 128 22 0 0 1 0 1 1 0 8 0 rtpcb 120 52 0 49 1 0 1 1 0 8 0 rtentry 112 78 0 12 2 0 2 2 0 8 0 unpcb 136 271 0 256 1 0 1 1 0 8 0 syncache 296 12 0 12 2 2 0 1 0 8 0 tcpqe 32 226 0 226 1 1 0 1 0 8 0 tcpcb 736 149 0 145 3 1 2 2 0 8 1 arp 120 12 0 2 1 0 1 1 0 8 0 inpcb 304 447 0 440 2 1 1 2 0 8 0 nd6 48 15 0 3 1 0 1 1 0 8 0 pkpcb 40 4 0 4 1 1 0 1 0 8 0 kcovpl 48 5 0 1 1 0 1 1 0 8 0 pffrag 232 3 0 2 1 0 1 1 0 482 0 pffrnode 88 3 0 2 1 0 1 1 0 8 0 pffrent 40 5 0 4 1 0 1 1 0 8 0 pfosfp 40 1430 0 1005 5 0 5 5 0 8 0 pfosfpen 112 1430 0 714 21 0 21 21 0 8 0 pfrktable 1344 1 0 0 1 0 1 1 0 8 0 pftag 88 2 0 0 1 0 1 1 0 8 0 pfstitem 24 62 0 9 1 0 1 1 0 8 0 pfstkey 112 92 0 39 2 0 2 2 0 8 0 pfstate 320 76 0 23 5 0 5 5 0 8 0 pfrule 1360 41 0 32 2 1 1 2 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 321 0 44 18 0 18 18 0 8 0 art_table 32 322 0 44 3 0 3 3 0 8 0 art_node 16 77 0 17 1 0 1 1 0 8 0 semupl 112 6 0 6 1 1 0 1 0 8 0 semapl 112 7 0 0 1 0 1 1 0 8 0 shmpl 112 17 0 0 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 2661 0 1244 89 0 89 89 0 8 0 ffsino 272 2661 0 1244 95 0 95 95 0 8 0 nchpl 144 4073 0 2471 61 0 61 61 0 8 0 uvmvnodes 80 2955 0 0 61 0 61 61 0 8 0 vnodes 224 2955 0 0 174 0 174 174 0 8 0 namei 1024 10622 0 10622 1 0 1 1 0 8 1 percpumem 16 42 0 6 1 0 1 1 0 8 0 vcpupl 2048 7 0 0 1 0 1 1 0 8 0 vmpool 560 7 0 0 1 0 1 1 0 8 0 scxspl 216 12065 0 12065 9 8 1 8 0 8 1 plimitpl 152 47 0 36 1 0 1 1 0 8 0 sigapl 424 1277 0 1239 5 0 5 5 0 8 0 futexpl 64 5545 0 5544 1 0 1 1 0 8 0 knotepl 112 70 0 0 2 0 2 2 0 8 0 kqueuepl 216 86 0 80 1 0 1 1 0 8 0 pipepl 336 109 0 92 2 0 2 2 0 8 0 fdescpl 496 1262 0 1239 4 1 3 4 0 8 0 filepl 152 3865 0 3713 7 0 7 7 0 8 1 lockfpl 104 92 0 90 1 0 1 1 0 8 0 lockfspl 48 43 0 41 1 0 1 1 0 8 0 sessionpl 144 21 0 8 1 0 1 1 0 8 0 pgrppl 48 21 0 8 1 0 1 1 0 8 0 ucredpl 96 326 0 313 1 0 1 1 0 8 0 zombiepl 144 1239 0 1239 1 0 1 1 0 8 1 processpl 1064 1277 0 1239 3 0 3 3 0 8 0 procpl 672 2348 0 2300 5 0 5 5 0 8 0 sosppl 168 21 0 21 2 1 1 1 0 8 1 sockpl 480 774 0 749 7 2 5 5 0 8 1 mcl64k 65536 7 0 0 1 0 1 1 0 8 0 mcl12k 12288 5 0 0 1 0 1 1 0 8 0 mcl9k 9216 2 0 0 1 0 1 1 0 8 0 mcl8k 8192 8 0 0 1 0 1 1 0 8 0 mcl4k 4096 4 0 0 1 0 1 1 0 8 0 mcl2k 2048 159 0 0 19 0 19 19 0 8 0 mtagpl 96 65 0 0 2 0 2 2 0 8 0 mbufpl 256 912 0 0 57 0 57 57 0 8 0 bufpl 288 4796 0 137 333 0 333 333 0 8 0 anonpl 24 369218 0 359525 116 19 97 109 0 186 27 amapchunkpl 152 32777 0 32215 29 5 24 27 0 158 1 amappl16 200 6445 0 6226 47 27 20 37 0 8 8 amappl15 192 255 0 252 1 0 1 1 0 8 0 amappl14 184 8 0 6 1 0 1 1 0 8 0 amappl13 176 49 0 47 1 0 1 1 0 8 0 amappl12 168 357 0 352 1 0 1 1 0 8 0 amappl11 160 283 0 267 1 0 1 1 0 8 0 amappl10 152 48 0 40 1 0 1 1 0 8 0 amappl9 144 260 0 257 1 0 1 1 0 8 0 amappl8 136 538 0 499 2 0 2 2 0 8 0 amappl7 128 224 0 212 1 0 1 1 0 8 0 amappl6 120 159 0 144 1 0 1 1 0 8 0 amappl5 112 1226 0 1207 1 0 1 1 0 8 0 amappl4 104 879 0 856 1 0 1 1 0 8 0 amappl3 96 540 0 519 1 0 1 1 0 8 0 amappl2 88 734 0 686 4 2 2 2 0 8 0 amappl1 80 23828 0 23336 14 2 12 13 0 8 0 amappl 88 13269 0 13081 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 19 0 0 1 0 1 1 0 8 0 uaddrrnd 24 1269 0 1239 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 1269 0 1239 1 0 1 1 0 8 0 vmmpekpl 168 10893 0 10859 2 0 2 2 0 8 0 vmmpepl 168 116128 0 114368 99 13 86 97 0 357 6 vmsppl 368 1268 0 1239 3 0 3 3 0 8 0 rwobjpl 56 33420 0 29393 57 0 57 57 0 8 0 pdppl 4096 2546 0 2485 77 16 61 62 0 8 0 pvpl 32 701996 0 688600 187 15 172 183 0 265 49 pmappl 248 1268 0 1239 2 0 2 2 0 8 0 extentpl 40 57 0 38 1 0 1 1 0 8 0 phpool 112 710 0 20 20 0 20 20 0 8 0 ddb{1}> machine ddbcpu 0 Stopped at x86_ipi_db+0x1a: addq $0x8,%rsp x86_ipi_db(ffffffff82779ff0) at x86_ipi_db+0x1a sys/arch/amd64/amd64/db_interface.c:393 x86_ipi_handler() at x86_ipi_handler+0xb7 sys/arch/amd64/amd64/ipi.c:106 Xresume_lapic_ipi() at Xresume_lapic_ipi+0x23 end of kernel end trace frame: 0x7f7ffffcd370, count: 12 ddb{0}> trace x86_ipi_db(ffffffff82779ff0) at x86_ipi_db+0x1a sys/arch/amd64/amd64/db_interface.c:393 x86_ipi_handler() at x86_ipi_handler+0xb7 sys/arch/amd64/amd64/ipi.c:106 Xresume_lapic_ipi() at Xresume_lapic_ipi+0x23 end of kernel end trace frame: 0x7f7ffffcd370, count: -3 ddb{0}> machine ddbcpu 1 Stopped at pppacopen+0x1b5: movq %r13,0x668 pppacopen(86353,1,2000,ffff8000246a37a8) at pppacopen+0x1b5 sys/net/if_pppx.c:1020 spec_open(ffff800027b0dba8) at spec_open+0x3d7 sys/kern/spec_vnops.c:157 VOP_OPEN(fffffd80649634c0,1,fffffd807f7d78a0,ffff8000246a37a8) at VOP_OPEN+0x75 sys/kern/vfs_vops.c:138 vn_open(ffff800027b0ddf8,1,0) at vn_open+0x467 sys/kern/vfs_vnops.c:183 doopenat(ffff8000246a37a8,ffffff9c,20000780,0,0,ffff800027b0dfe0) at doopenat+0x26a sys/kern/vfs_syscalls.c:1128 syscall(ffff800027b0e050) at syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800027b0e050) at syscall+0x489 sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x10573c723d0, count: 8 ddb{1}> trace pppacopen(86353,1,2000,ffff8000246a37a8) at pppacopen+0x1b5 sys/net/if_pppx.c:1020 spec_open(ffff800027b0dba8) at spec_open+0x3d7 sys/kern/spec_vnops.c:157 VOP_OPEN(fffffd80649634c0,1,fffffd807f7d78a0,ffff8000246a37a8) at VOP_OPEN+0x75 sys/kern/vfs_vops.c:138 vn_open(ffff800027b0ddf8,1,0) at vn_open+0x467 sys/kern/vfs_vnops.c:183 doopenat(ffff8000246a37a8,ffffff9c,20000780,0,0,ffff800027b0dfe0) at doopenat+0x26a sys/kern/vfs_syscalls.c:1128 syscall(ffff800027b0e050) at syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800027b0e050) at syscall+0x489 sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x10573c723d0, count: -7