login: uvm_fault(0xfffffd806edb38a8, 0x668, 0, 2) -> e kernel: page fault trap, code=0 Stopped at pppacopen+0x1b5: movq %r13,0x668 TID PID UID PRFLAGS PFLAGS CPU COMMAND *516841 66912 0 0x2 0 0K syz-executor1538 pppacopen(4086331,1,2000,ffff8000ffff62b0) at pppacopen+0x1b5 sys/net/if_pppx.c:1020 spec_open(ffff800021224a78) at spec_open+0x3d7 sys/kern/spec_vnops.c:157 VOP_OPEN(fffffd806e1cc230,1,fffffd807f7d7840,ffff8000ffff62b0) at VOP_OPEN+0x75 sys/kern/vfs_vops.c:138 vn_open(ffff800021224cc8,1,0) at vn_open+0x467 sys/kern/vfs_vnops.c:183 doopenat(ffff8000ffff62b0,ffffff9c,20000100,0,0,ffff800021224eb0) at doopenat+0x26a sys/kern/vfs_syscalls.c:1128 syscall(ffff800021224f20) at syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800021224f20) at syscall+0x489 sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffc6520, 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{0}> ddb{0}> set $lines = 0 ddb{0}> set $maxwidth = 0 ddb{0}> show panic *cpu0: uvm_fault(0xfffffd806edb38a8, 0x668, 0, 2) -> e ddb{0}> trace pppacopen(4086331,1,2000,ffff8000ffff62b0) at pppacopen+0x1b5 sys/net/if_pppx.c:1020 spec_open(ffff800021224a78) at spec_open+0x3d7 sys/kern/spec_vnops.c:157 VOP_OPEN(fffffd806e1cc230,1,fffffd807f7d7840,ffff8000ffff62b0) at VOP_OPEN+0x75 sys/kern/vfs_vops.c:138 vn_open(ffff800021224cc8,1,0) at vn_open+0x467 sys/kern/vfs_vnops.c:183 doopenat(ffff8000ffff62b0,ffffff9c,20000100,0,0,ffff800021224eb0) at doopenat+0x26a sys/kern/vfs_syscalls.c:1128 syscall(ffff800021224f20) at syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800021224f20) at syscall+0x489 sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffc6520, count: -7 ddb{0}> show registers rdi 0 rsi 0 rbp 0xffff8000212249f0 rbx 0 rdx 0 rcx 0 rax 0xffff800000b36800 r8 0x770 r9 0xfffffd807f7d7840 r10 0x729b0120eb87bb77 r11 0x7b7983aeedddcd07 r12 0xfffffd806e1cc230 r13 0 r14 0x4086331 __kernel_phys_end+0x1486331 r15 0xffff800021224a78 rip 0xffffffff81c79ee5 pppacopen+0x1b5 cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff8000212249a0 ss 0x10 pppacopen+0x1b5: movq %r13,0x668 ddb{0}> show proc PROC (syz-executor1538) pid=516841 stat=onproc flags process=2 proc=0 pri=17, usrpri=50, nice=20 forw=0xffffffffffffffff, list=0xffff8000ffff6d30,0xffffffff8293ceb0 process=0xffff8000211f2150 user=0xffff80002121f000, vmspace=0xfffffd806edb38a8 estcpu=0, cpticks=1, pctcpu=0.0 user=0, sys=1, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND *66912 516841 10628 0 7 0x2 syz-executor1538 10628 380053 66716 0 3 0x10008a sigsusp ksh 66716 281634 79436 0 3 0x9a poll sshd 45129 229805 1 0 3 0x100083 ttyin getty 79436 136863 1 0 3 0x88 poll sshd 89491 193561 63440 74 3 0x100092 bpf pflogd 63440 461153 1 0 3 0x80 netio pflogd 22822 400970 52508 73 3 0x100090 kqread syslogd 52508 282961 1 0 3 0x100082 netio syslogd 97224 192769 1 0 3 0x100080 kqread resolvd 95797 200768 55819 77 3 0x100092 kqread dhcpleased 76519 495683 55819 77 3 0x100092 kqread dhcpleased 55819 450367 1 0 3 0x80 kqread dhcpleased 51677 87147 0 0 3 0x14200 bored smr 85053 120259 0 0 3 0x14200 pgzero zerothread 54887 374739 0 0 3 0x14200 aiodoned aiodoned 79801 223037 0 0 3 0x14200 syncer update 8346 460355 0 0 3 0x14200 cleaner cleaner 86730 437168 0 0 3 0x14200 reaper reaper 51788 180062 0 0 3 0x14200 pgdaemon pagedaemon 8897 361909 0 0 3 0x14200 bored viomb 82924 332104 0 0 3 0x40014200 acpi0 acpi0 90704 287520 0 0 7 0x40014200 idle1 61317 333905 0 0 3 0x14200 bored softnet 85430 386878 0 0 3 0x14200 bored systqmp 53361 267298 0 0 3 0x14200 bored systq 56929 20599 0 0 2 0x40014200 softclock 17619 183160 0 0 3 0x40014200 idle0 1 445560 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks Process 66912 (syz-executor1538) thread 0xffff8000ffff62b0 (516841) 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{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10145 6456K 6456K 78643K 11235 0 pcb 13 8K 8K 78643K 13 0 rtable 62 2K 2K 78643K 112 0 ifaddr 29 8K 8K 78643K 30 0 counters 40 33K 33K 78643K 40 0 ioctlops 0 0K 4K 78643K 1479 0 mount 1 1K 1K 78643K 1 0 log 0 0K 0K 78643K 5 0 vnodes 1180 74K 74K 78643K 1185 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 2 0K 0K 78643K 2 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1697 195K 286K 78643K 12598 0 file desc 1 0K 0K 78643K 1 0 proc 67 87K 87K 78643K 281 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 in_multi 11 0K 0K 78643K 11 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 344 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 81 3K 6K 78643K 1682 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 4 0K 0K 78643K 4 0 temp 24 4186K 4249K 78643K 2963 0 kqueue 9 12K 12K 78643K 9 0 SYN cache 2 16K 16K 78643K 2 0 ddb{0}> 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 17 0 14 1 0 1 1 0 8 0 rtentry 112 23 0 1 1 0 1 1 0 8 0 unpcb 136 35 0 20 1 0 1 1 0 8 0 syncache 296 5 0 5 2 1 1 1 0 8 1 tcpcb 736 7 0 4 1 0 1 1 0 8 0 arp 120 2 0 0 1 0 1 1 0 8 0 inpcb 304 29 0 23 1 0 1 1 0 8 0 pfosfp 40 1428 0 1005 5 0 5 5 0 8 0 pfosfpen 112 1428 0 714 21 0 21 21 0 8 0 pfstitem 24 5 0 0 1 0 1 1 0 8 0 pfstkey 112 5 0 0 1 0 1 1 0 8 0 pfstate 320 5 0 0 1 0 1 1 0 8 0 pfrule 1360 21 0 16 2 1 1 2 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 97 0 0 7 0 7 7 0 8 0 art_table 32 98 0 0 1 0 1 1 0 8 0 art_node 16 22 0 2 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 1407 0 23 87 0 87 87 0 8 0 ffsino 272 1407 0 23 93 0 93 93 0 8 0 nchpl 144 1573 0 39 57 0 57 57 0 8 0 uvmvnodes 80 1417 0 0 29 0 29 29 0 8 0 vnodes 224 1417 0 0 84 0 84 84 0 8 0 namei 1024 4098 0 4098 2 1 1 1 0 8 1 percpumem 16 32 0 0 1 0 1 1 0 8 0 scxspl 216 3469 0 3469 2 1 1 2 0 8 1 plimitpl 152 16 0 9 1 0 1 1 0 8 0 sigapl 424 249 0 220 4 0 4 4 0 8 0 knotepl 112 23 0 0 1 0 1 1 0 8 0 kqueuepl 216 5 0 0 1 0 1 1 0 8 0 pipepl 336 67 0 64 2 1 1 1 0 8 0 fdescpl 496 235 0 220 3 0 3 3 0 8 0 filepl 152 1064 0 1005 3 0 3 3 0 8 0 lockfpl 104 6 0 4 1 0 1 1 0 8 0 lockfspl 48 4 0 2 1 0 1 1 0 8 0 sessionpl 144 18 0 9 1 0 1 1 0 8 0 pgrppl 48 18 0 9 1 0 1 1 0 8 0 ucredpl 96 69 0 57 1 0 1 1 0 8 0 zombiepl 144 220 0 220 2 1 1 1 0 8 1 processpl 1064 249 0 220 3 0 3 3 0 8 0 procpl 672 249 0 220 3 0 3 3 0 8 0 sockpl 480 81 0 57 5 1 4 4 0 8 0 mcl8k 8192 5 0 0 1 0 1 1 0 8 0 mcl4k 4096 3 0 0 1 0 1 1 0 8 0 mcl2k 2048 57 0 0 8 0 8 8 0 8 0 mtagpl 96 2 0 0 1 0 1 1 0 8 0 mbufpl 256 108 0 0 7 0 7 7 0 8 0 bufpl 288 1964 0 91 134 0 134 134 0 8 0 anonpl 24 34517 0 32196 18 3 15 17 0 186 1 amapchunkpl 152 2999 0 2856 7 1 6 7 0 158 0 amappl16 200 95 0 91 1 0 1 1 0 8 0 amappl14 184 1 0 0 1 0 1 1 0 8 0 amappl13 176 18 0 17 2 1 1 1 0 8 0 amappl12 168 11 0 11 2 1 1 1 0 8 1 amappl11 160 44 0 30 1 0 1 1 0 8 0 amappl10 152 23 0 18 1 0 1 1 0 8 0 amappl9 144 447 0 445 1 0 1 1 0 8 0 amappl8 136 263 0 263 2 1 1 1 0 8 1 amappl7 128 49 0 46 1 0 1 1 0 8 0 amappl6 120 100 0 90 1 0 1 1 0 8 0 amappl5 112 180 0 164 1 0 1 1 0 8 0 amappl4 104 500 0 483 1 0 1 1 0 8 0 amappl3 96 140 0 126 1 0 1 1 0 8 0 amappl2 88 312 0 278 1 0 1 1 0 8 0 amappl1 80 7642 0 7262 10 1 9 9 0 8 0 amappl 88 1441 0 1377 2 0 2 2 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 24 235 0 220 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 235 0 220 1 0 1 1 0 8 0 vmmpekpl 168 5951 0 5934 1 0 1 1 0 8 0 vmmpepl 168 22828 0 21989 42 1 41 41 0 357 2 vmsppl 368 234 0 220 2 0 2 2 0 8 0 rwobjpl 56 8725 0 6755 29 0 29 29 0 8 0 pdppl 4096 478 0 440 51 13 38 44 0 8 0 pvpl 32 111112 0 106997 38 1 37 37 0 265 2 pmappl 248 234 0 220 2 0 2 2 0 8 0 extentpl 40 57 0 38 1 0 1 1 0 8 0 phpool 112 405 0 18 12 0 12 12 0 8 0 ddb{0}> machine ddbcpu 0 Invalid cpu 0 ddb{0}> trace pppacopen(4086331,1,2000,ffff8000ffff62b0) at pppacopen+0x1b5 sys/net/if_pppx.c:1020 spec_open(ffff800021224a78) at spec_open+0x3d7 sys/kern/spec_vnops.c:157 VOP_OPEN(fffffd806e1cc230,1,fffffd807f7d7840,ffff8000ffff62b0) at VOP_OPEN+0x75 sys/kern/vfs_vops.c:138 vn_open(ffff800021224cc8,1,0) at vn_open+0x467 sys/kern/vfs_vnops.c:183 doopenat(ffff8000ffff62b0,ffffff9c,20000100,0,0,ffff800021224eb0) at doopenat+0x26a sys/kern/vfs_syscalls.c:1128 syscall(ffff800021224f20) at syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800021224f20) at syscall+0x489 sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffc6520, count: -7 ddb{0}> machine ddbcpu 1 Stopped at x86_ipi_db+0x1a: addq $0x8,%rsp x86_ipi_db(ffff800020d38ff0) 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 acpicpu_idle() at acpicpu_idle+0x312 sys/dev/acpi/acpicpu.c:1206 sched_idle(ffff800020d38ff0) at sched_idle+0x417 sys/kern/kern_sched.c:178 end trace frame: 0x0, count: 10 ddb{1}> trace x86_ipi_db(ffff800020d38ff0) 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 acpicpu_idle() at acpicpu_idle+0x312 sys/dev/acpi/acpicpu.c:1206 sched_idle(ffff800020d38ff0) at sched_idle+0x417 sys/kern/kern_sched.c:178 end trace frame: 0x0, count: -5 ddb{1}>