login: uvm_fault(0xfffffd806ee60cf8, 0x668, 0, 2) -> e kernel: page fault trap, code=0 Stopped at pppacopen+0x1b5: movq %r13,0x668 TID PID UID PRFLAGS PFLAGS CPU COMMAND 204706 18828 0 0x2 0 0 syz-executor2010 *427299 18828 0 0x2 0x4000000 1K syz-executor2010 pppacopen(4086331,1,2000,ffff8000ffff67f0) at pppacopen+0x1b5 sys/net/if_pppx.c:1020 spec_open(ffff800021223b08) at spec_open+0x3d7 sys/kern/spec_vnops.c:157 VOP_OPEN(fffffd806fc1b4d0,1,fffffd807f7d74e0,ffff8000ffff67f0) at VOP_OPEN+0x75 sys/kern/vfs_vops.c:138 vn_open(ffff800021223d58,1,0) at vn_open+0x467 sys/kern/vfs_vnops.c:183 doopenat(ffff8000ffff67f0,ffffff9c,200000c0,0,0,ffff800021223f40) at doopenat+0x26a sys/kern/vfs_syscalls.c:1128 syscall(ffff800021223fb0) at syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800021223fb0) at syscall+0x489 sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x681d7d81520, 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(0xfffffd806ee60cf8, 0x668, 0, 2) -> e ddb{1}> trace pppacopen(4086331,1,2000,ffff8000ffff67f0) at pppacopen+0x1b5 sys/net/if_pppx.c:1020 spec_open(ffff800021223b08) at spec_open+0x3d7 sys/kern/spec_vnops.c:157 VOP_OPEN(fffffd806fc1b4d0,1,fffffd807f7d74e0,ffff8000ffff67f0) at VOP_OPEN+0x75 sys/kern/vfs_vops.c:138 vn_open(ffff800021223d58,1,0) at vn_open+0x467 sys/kern/vfs_vnops.c:183 doopenat(ffff8000ffff67f0,ffffff9c,200000c0,0,0,ffff800021223f40) at doopenat+0x26a sys/kern/vfs_syscalls.c:1128 syscall(ffff800021223fb0) at syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800021223fb0) at syscall+0x489 sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x681d7d81520, count: -7 ddb{1}> show registers rdi 0 rsi 0 rbp 0xffff800021223a80 rbx 0 rdx 0 rcx 0 rax 0xffff800000b36800 r8 0x770 r9 0xfffffd807f7d74e0 r10 0x686dbf5a48890f82 r11 0x7cbef409678a618c r12 0xfffffd806fc1b4d0 r13 0 r14 0x4086331 __kernel_phys_end+0x1486331 r15 0xffff800021223b08 rip 0xffffffff81c79ee5 pppacopen+0x1b5 cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff800021223a30 ss 0x10 pppacopen+0x1b5: movq %r13,0x668 ddb{1}> show proc PROC (syz-executor2010) pid=427299 stat=onproc flags process=2 proc=4000000 pri=17, usrpri=56, nice=20 forw=0xffffffffffffffff, list=0xffff8000ffff6fd0,0xffffffff8293ceb0 process=0xffff8000211f3a40 user=0xffff80002121f000, vmspace=0xfffffd806ee60cf8 estcpu=6, cpticks=0, pctcpu=0.0 user=0, sys=0, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 18828 204706 30181 0 7 0x2 syz-executor2010 *18828 427299 30181 0 7 0x4000002 syz-executor2010 30181 456911 18194 0 3 0x10008a sigsusp ksh 18194 141011 35278 0 3 0x9a poll sshd 82570 195602 1 0 3 0x100083 ttyin getty 35278 125488 1 0 3 0x88 poll sshd 57251 491836 32230 74 3 0x100092 bpf pflogd 32230 74987 1 0 3 0x80 netio pflogd 67222 238493 50964 73 3 0x100090 kqread syslogd 50964 305326 1 0 3 0x100082 netio syslogd 12251 523343 1 0 3 0x100080 kqread resolvd 61360 301240 82149 77 3 0x100092 kqread dhcpleased 66048 375174 82149 77 3 0x100092 kqread dhcpleased 82149 334391 1 0 3 0x80 kqread dhcpleased 37779 327773 0 0 3 0x14200 bored smr 74190 68607 0 0 3 0x14200 pgzero zerothread 93745 12024 0 0 3 0x14200 aiodoned aiodoned 85853 60980 0 0 3 0x14200 syncer update 16698 280928 0 0 3 0x14200 cleaner cleaner 21099 142766 0 0 3 0x14200 reaper reaper 56509 487120 0 0 3 0x14200 pgdaemon pagedaemon 19466 72224 0 0 3 0x14200 bored viomb 25691 131377 0 0 3 0x40014200 acpi0 acpi0 88073 501957 0 0 3 0x40014200 idle1 71063 22816 0 0 3 0x14200 bored softnet 8029 174551 0 0 3 0x14200 bored systqmp 15638 116885 0 0 3 0x14200 bored systq 77748 179852 0 0 3 0x40014200 bored softclock 82036 42992 0 0 3 0x40014200 idle0 1 278131 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{1}> show all locks Process 18828 (syz-executor2010) thread 0xffff8000ffff67f0 (427299) 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 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 94 4K 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 2992 0 kqueue 9 12K 12K 78643K 9 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 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 1 0 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 6 0 0 1 0 1 1 0 8 0 pfstkey 112 6 0 0 1 0 1 1 0 8 0 pfstate 320 6 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 96 0 0 6 0 6 6 0 8 0 art_table 32 97 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 1 0 1 1 0 8 1 percpumem 16 32 0 0 1 0 1 1 0 8 0 scxspl 216 3486 0 3486 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 futexpl 64 1 0 1 1 0 1 1 0 8 1 knotepl 112 24 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 1 0 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 1 0 1 1 0 8 1 processpl 1064 249 0 220 3 0 3 3 0 8 0 procpl 672 250 0 220 3 0 3 3 0 8 0 sockpl 480 81 0 57 4 0 4 4 0 8 0 mcl8k 8192 2 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 1 0 0 1 0 1 1 0 8 0 mbufpl 256 105 0 0 7 0 7 7 0 8 0 bufpl 288 1975 0 91 135 0 135 135 0 8 0 anonpl 24 35151 0 32547 18 2 16 17 0 186 0 amapchunkpl 152 3029 0 2858 7 0 7 7 0 158 0 amappl16 200 95 0 91 1 0 1 1 0 8 0 amappl13 176 18 0 17 1 0 1 1 0 8 0 amappl12 168 23 0 23 1 0 1 1 0 8 1 amappl11 160 54 0 40 1 0 1 1 0 8 0 amappl10 152 28 0 23 1 0 1 1 0 8 0 amappl9 144 460 0 458 1 0 1 1 0 8 0 amappl8 136 263 0 262 1 0 1 1 0 8 0 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 112 175 0 160 1 0 1 1 0 8 0 amappl4 104 503 0 484 1 0 1 1 0 8 0 amappl3 96 140 0 126 1 0 1 1 0 8 0 amappl2 88 314 0 279 1 0 1 1 0 8 0 amappl1 80 7630 0 7244 9 0 9 9 0 8 0 amappl 88 1440 0 1364 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 5940 0 5925 1 0 1 1 0 8 0 vmmpepl 168 22861 0 21972 41 0 41 41 0 357 2 vmsppl 368 234 0 220 2 0 2 2 0 8 0 rwobjpl 56 8742 0 6752 29 0 29 29 0 8 0 pdppl 4096 478 0 440 48 10 38 44 0 8 0 pvpl 32 112009 0 107579 37 0 37 37 0 265 1 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 112 400 0 13 12 0 12 12 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: 0x7f7fffffa6c0, 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: 0x7f7fffffa6c0, count: -3 ddb{0}> machine ddbcpu 1 Stopped at pppacopen+0x1b5: movq %r13,0x668 pppacopen(4086331,1,2000,ffff8000ffff67f0) at pppacopen+0x1b5 sys/net/if_pppx.c:1020 spec_open(ffff800021223b08) at spec_open+0x3d7 sys/kern/spec_vnops.c:157 VOP_OPEN(fffffd806fc1b4d0,1,fffffd807f7d74e0,ffff8000ffff67f0) at VOP_OPEN+0x75 sys/kern/vfs_vops.c:138 vn_open(ffff800021223d58,1,0) at vn_open+0x467 sys/kern/vfs_vnops.c:183 doopenat(ffff8000ffff67f0,ffffff9c,200000c0,0,0,ffff800021223f40) at doopenat+0x26a sys/kern/vfs_syscalls.c:1128 syscall(ffff800021223fb0) at syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800021223fb0) at syscall+0x489 sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x681d7d81520, count: 8 ddb{1}> trace pppacopen(4086331,1,2000,ffff8000ffff67f0) at pppacopen+0x1b5 sys/net/if_pppx.c:1020 spec_open(ffff800021223b08) at spec_open+0x3d7 sys/kern/spec_vnops.c:157 VOP_OPEN(fffffd806fc1b4d0,1,fffffd807f7d74e0,ffff8000ffff67f0) at VOP_OPEN+0x75 sys/kern/vfs_vops.c:138 vn_open(ffff800021223d58,1,0) at vn_open+0x467 sys/kern/vfs_vnops.c:183 doopenat(ffff8000ffff67f0,ffffff9c,200000c0,0,0,ffff800021223f40) at doopenat+0x26a sys/kern/vfs_syscalls.c:1128 syscall(ffff800021223fb0) at syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800021223fb0) at syscall+0x489 sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x681d7d81520, count: -7 ddb{1}>