kernel: protection fault trap, code=0 Stopped at fill_file+0xb88: movl 0x8(%rax),%eax ddb> ddb> set $lines = 0 ddb> set $maxwidth = 0 ddb> show panic the kernel did not panic ddb> trace fill_file(ffff8000012c6800,fffffd8079c22a58,fffffd806c537370,5,0,ffff80002a551120,de6dd32e50957b,1007d,5) at fill_file+0xb88 sys/kern/kern_sysctl.c:1548 sysctl_file(ffff80002a4fb468,4,20000100,ffff80002a4fb498,ffff8000376256e8) at sysctl_file+0x7db sys/kern/kern_sysctl.c:1728 kern_sysctl(ffff80002a4fb464,5,20000100,ffff80002a4fb498,0,fffffffffffffe59,228b6a869dcf2f4e) at kern_sysctl+0x5ff sys/kern/kern_sysctl.c:493 sys_sysctl(ffff8000376256e8,ffff80002a4fb5d0,ffff80002a4fb520) at sys_sysctl+0x41f syscall(ffff80002a4fb5d0) at syscall+0x97e sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x2825f19afb0, count: -6 ddb> show registers rdi 0xffff80002d9de000 rsi 0x57d8 __ALIGN_SIZE+0x47d8 rbp 0xffff80002a4fb1c0 rbx 0xfffffd806c537370 rdx 0xffff80002d9de000 rcx 0x57d7 __ALIGN_SIZE+0x47d7 rax 0x6fd25829cb1a5669 r8 0xffff80002a5bb668 r9 0 r10 0xb94b40e5b0140281 r11 0x4e313007bf713332 r12 0xffff8000376256e8 r13 0x5 r14 0xffff80002a551120 r15 0xffff8000012c6800 rip 0xffffffff81581e58 fill_file+0xb88 cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff80002a4fb090 ss 0 fill_file+0xb88: movl 0x8(%rax),%eax ddb> show proc PROC (syz-executor) tid=25871 pid=56280 tcnt=2 stat=onproc flags process=8000010 proc=4000000 runpri=32, usrpri=84, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff80002a5602b8,0xffff80002a560a60 process=0xffff80002a551560 user=0xffff80002a4f6000, vmspace=0xfffffd806bdb32c8 estcpu=34, cpticks=0, pctcpu=0.0, user=0, sys=0, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 46681 346382 30320 0 3 0x8000000 futex syz-executor 46681 319104 30320 0 3 0xc000000 futex syz-executor 84115 81431 34908 0 2 0x8000000 syz-executor 84115 15618 34908 0 3 0xc000080 fsleep syz-executor 84115 220937 34908 0 2 0xc000000 syz-executor 53067 504748 47794 0 2 0x8000000 syz-executor 53067 16922 47794 0 3 0xc000000 futex syz-executor 66225 23745 42955 0 2 0x8000000 syz-executor 66225 101093 42955 0 3 0xc000080 fsleep syz-executor 66225 476582 42955 0 2 0xc000000 syz-executor 37937 408391 19261 0 2 0x8000010 syz-executor 37937 515465 19261 0 3 0xc000010 futex syz-executor 56280 131746 33430 60928 2 0x8000010 syz-executor *56280 25871 33430 60928 7 0xc000010 syz-executor 30721 441380 69271 0 2 0x8000000 syz-executor 30721 499817 69271 0 3 0xc000080 ttyopn syz-executor 30721 126708 69271 0 3 0xc000080 ttyopn syz-executor 30721 96110 69271 0 2 0xc000000 syz-executor 30721 478247 69271 0 3 0xc000080 fsleep syz-executor 42955 301573 225 0 3 0x8000082 nanoslp syz-executor 30320 362896 225 0 3 0x8000082 nanoslp syz-executor 92686 116612 225 0 2 0x8000002 syz-executor 69271 45477 225 0 3 0x8000082 nanoslp syz-executor 34908 387909 225 0 3 0x8000082 nanoslp syz-executor 33430 148917 225 0 3 0x8000082 nanoslp syz-executor 47794 261119 225 0 3 0x8000082 nanoslp syz-executor 19261 151667 225 0 3 0x8000082 nanoslp syz-executor 3574 331739 1 0 3 0x18100083 ttyin getty 17286 90934 0 0 3 0x14280 nfsidl nfsio 37825 122728 0 0 3 0x14280 nfsidl nfsio 89613 27760 0 0 3 0x14280 nfsidl nfsio 77595 351708 0 0 3 0x14280 nfsidl nfsio 38838 370749 0 0 3 0x14280 nfsidl nfsio 19293 377887 0 0 3 0x14280 nfsidl nfsio 29715 117693 0 0 3 0x14280 nfsidl nfsio 39611 2223 0 0 3 0x14280 nfsidl nfsio 96276 138982 0 0 3 0x14280 nfsidl nfsio 29207 226750 0 0 3 0x14280 nfsidl nfsio 60590 486838 0 0 3 0x14280 nfsidl nfsio 44880 4650 0 0 3 0x14280 nfsidl nfsio 21708 137490 0 0 3 0x14280 nfsidl nfsio 22038 451330 0 0 3 0x14280 nfsidl nfsio 23907 190298 0 0 3 0x14280 nfsidl nfsio 5576 464375 0 0 3 0x14280 nfsidl nfsio 16116 474631 0 0 3 0x14280 nfsidl nfsio 32796 422736 0 0 3 0x14280 nfsidl nfsio 99214 48409 0 0 3 0x14280 nfsidl nfsio 24958 134210 0 0 3 0x14280 nfsidl nfsio 16462 174591 0 0 3 0x14200 bored sosplice 225 14776 91084 0 3 0x8000082 kqread syz-executor 91084 96334 24602 0 3 0x810008a sigsusp ksh 24602 270467 38230 0 3 0x18000098 kqread sshd-session 38230 267425 11511 0 3 0x18000092 kqread sshd-session 11511 285845 1 0 3 0x18000088 kqread sshd 70538 458542 17303 73 2 0x19100010 syslogd 17303 434691 1 0 3 0x18100082 sbwait syslogd 90927 268554 1 0 3 0x18100080 kqread resolvd 23782 263452 3232 77 3 0x18100092 kqread dhcpleased 45589 220927 3232 77 3 0x18100092 kqread dhcpleased 3232 201711 1 0 3 0x18000080 kqread dhcpleased 97801 16746 0 0 3 0x14200 bored smr 422 411183 0 0 2 0x14200 zerothread 50079 341797 0 0 3 0x14200 aiodoned aiodoned 63333 191735 0 0 3 0x14200 syncer update 11391 38438 0 0 3 0x14200 cleaner cleaner 8164 326401 0 0 3 0x14200 reaper reaper 25509 465208 0 0 3 0x14200 pgdaemon pagedaemon 87593 348272 0 0 3 0x14200 bored viomb 56573 296939 0 0 3 0x40014200 acpi0 acpi0 18813 376123 0 0 3 0x14200 bored softnet3 64775 196830 0 0 3 0x14200 bored softnet2 87323 115995 0 0 3 0x14200 bored softnet1 82097 235434 0 0 3 0x14200 bored softnet0 75965 363414 0 0 3 0x14200 bored systqmp 57154 280658 0 0 3 0x14200 bored systq 96878 82541 0 0 3 0x40014200 tmoslp softclock 79648 445342 0 0 3 0x40014200 idle0 1 308665 0 0 3 0x8080082 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 10227 10307K 10559K 166960K 13372 0 pcb 18 15K 16K 166960K 325 0 rtable 206 10K 11K 166960K 1945 0 pf 38 14K 17K 166960K 195 0 ifaddr 40 7K 8K 166960K 266 0 ifgroup 58 2K 2K 166960K 308 0 sysctl 4 1K 1K 166960K 4 0 counters 32 17K 17K 166960K 95 0 ioctlops 0 0K 4K 166960K 232 0 iov 0 0K 16K 166960K 200 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1490 94K 94K 166960K 3419 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 68K 76K 166960K 24 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 0K 166960K 132 0 dirhash 12 2K 3K 166960K 36 0 ACPI 1697 195K 286K 166960K 12548 0 file desc 17 61K 97K 166960K 1695 0 sigio 1 0K 0K 166960K 12 0 proc 60 59K 124K 166960K 1943 0 subproc 104 6K 6K 166960K 757 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 2 0K 0K 166960K 198 0 in_multi 87 6K 7K 166960K 670 0 ether_multi 1 0K 0K 166960K 9 0 mrt 1 0K 0K 166960K 3 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 229 1023K 1023K 166960K 229 0 exec 0 0K 1K 166960K 1237 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 231 106K 123K 166960K 14302 0 UVM aobj 105 5K 5K 166960K 108 0 pinsyscall 38 76K 100K 166960K 4015 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 40 0 NDP 13 0K 2K 166960K 192 0 temp 78 6809K 6880K 166960K 79055 0 kqueue 14 22K 26K 166960K 164 0 SYN cache 2 16K 16K 166960K 2 0 ddb> show all pools Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle rtpcb 120 247 0 244 2 1 1 2 0 8 0 rtentry 112 676 0 589 4 0 4 4 0 8 0 unpcb 144 1540 0 1521 6 5 1 6 0 8 0 syncache 336 4 0 4 1 1 0 1 0 8 0 tcpcb 808 577 0 572 8 7 1 8 0 8 0 arp 88 120 0 104 1 0 1 1 0 8 0 ipq 40 6 0 6 1 0 1 1 0 8 1 ipqe 40 135 0 135 1 0 1 1 0 8 1 inpcb 336 2208 0 2196 21 17 4 18 0 8 2 nd6 104 181 0 159 1 0 1 1 0 8 0 pkpcb 40 135 0 135 1 1 0 1 0 8 0 kcovpl 48 58 0 50 1 0 1 1 0 8 0 ppxss 1072 5 0 5 1 1 0 1 0 8 0 pfstscr 40 1 0 1 1 1 0 1 0 8 0 pfosfp 40 1 0 0 1 0 1 1 0 8 0 pfosfpen 112 1 0 0 1 0 1 1 0 8 0 pfrktable 1344 5 0 2 1 0 1 1 0 8 0 pfanchor 1288 1 0 0 1 0 1 1 0 8 0 pftag 88 4 0 2 1 0 1 1 0 8 0 pfqueue 264 1 0 1 1 1 0 1 0 8 0 pfstitem 24 1 0 0 1 0 1 1 0 8 0 pfstkey 128 3 0 2 1 0 1 1 0 8 0 pfstate 344 2 0 1 1 0 1 1 0 8 0 pfrule 1344 41 0 7 3 0 3 3 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 2736 0 2339 30 2 28 30 0 8 0 art_table 32 2737 0 2339 4 0 4 4 0 8 0 art_node 16 674 0 596 1 0 1 1 0 8 0 sysvmsgpl 40 1 0 1 1 1 0 1 0 8 0 semupl 112 2 0 2 1 1 0 1 0 8 0 semapl 112 129 0 119 1 0 1 1 0 8 0 shmpl 112 105 0 3 3 0 3 3 0 8 0 dirhash 1024 33 0 16 3 0 3 3 0 8 0 dino2pl 256 3452 0 1854 101 0 101 101 0 8 0 ffsino 240 3452 0 1854 95 0 95 95 0 8 0 nchpl 144 4947 0 4338 65 40 25 65 0 8 0 uvmvnodes 80 5164 0 0 106 0 106 106 0 8 0 vnodes 216 5164 0 0 287 0 287 287 0 8 0 namei 1024 23285 0 23284 2 1 1 2 0 8 0 vcpupl 3904 4 0 1 1 0 1 1 0 8 0 vmpool 664 7 0 4 1 0 1 1 0 8 0 pfiaddrpl 120 1 0 0 1 0 1 1 0 8 0 kstatmem 264 152 0 126 2 0 2 2 0 8 0 scsiplug 72 3 0 3 1 1 0 1 0 8 0 scxspl 216 33819 0 33819 8 0 8 8 1 8 8 plimitpl 152 409 0 391 1 0 1 1 0 8 0 sigapl 424 1895 0 1829 8 0 8 8 0 8 0 futexpl 64 18583 0 18579 1 0 1 1 0 8 0 knotepl 120 31331 0 31275 18 8 10 10 0 8 7 kqueuepl 184 367 0 357 3 2 1 3 0 8 0 pipepl 288 440 0 411 7 4 3 7 0 8 0 fdescpl 432 1858 0 1829 5 1 4 5 0 8 0 filepl 120 13353 0 13091 18 9 9 18 0 8 0 lockfpl 104 545 0 543 2 1 1 2 0 8 0 lockfspl 48 252 0 249 1 0 1 1 0 8 0 sessionpl 144 72 0 64 1 0 1 1 0 8 0 pgrppl 48 139 0 123 1 0 1 1 0 8 0 ucredpl 104 1948 0 1935 1 0 1 1 0 8 0 zombiepl 144 1853 0 1853 1 0 1 1 0 8 1 processpl 1088 1895 0 1829 5 0 5 5 0 8 0 procpl 648 3221 0 3143 8 1 7 8 0 8 0 sosppl 168 2 0 2 1 1 0 1 0 8 0 sockpl 504 4148 0 4114 66 58 8 29 0 8 3 mcl64k 65536 11 0 11 1 1 0 1 0 8 0 mcl16k 16384 1 0 1 1 1 0 1 0 8 0 mcl12k 12288 2 0 2 1 1 0 1 0 8 0 mcl9k 9216 1 0 1 1 1 0 1 0 8 0 mcl8k 8192 46 0 46 2 1 1 1 0 8 1 mcl4k 4096 5 0 5 2 1 1 1 0 8 1 mcl2k 2048 8473 0 8377 29 16 13 29 0 8 0 mtagpl 96 30 0 26 1 0 1 1 0 8 0 mbufpl 256 22035 0 21839 32 17 15 28 0 8 0 bufpl 280 11433 0 3549 564 0 564 564 0 8 0 anonpl 24 313089 0 309739 79 46 33 79 0 187 0 amapchunkpl 152 48078 0 47590 46 23 23 42 0 158 1 amappl16 200 5761 0 5736 15 12 3 14 0 8 0 amappl15 192 11 0 11 1 1 0 1 0 8 0 amappl14 184 213 0 203 1 0 1 1 0 8 0 amappl13 176 7 0 7 1 1 0 1 0 8 0 amappl12 168 3268 0 3239 3 1 2 3 0 8 0 amappl11 160 60 0 50 1 0 1 1 0 8 0 amappl10 152 14 0 14 1 1 0 1 0 8 0 amappl9 144 137 0 137 1 1 0 1 0 8 0 amappl8 136 29 0 27 1 0 1 1 0 8 0 amappl7 128 196 0 186 1 0 1 1 0 8 0 amappl6 120 670 0 669 1 0 1 1 0 8 0 amappl5 112 330 0 322 1 0 1 1 0 8 0 amappl4 104 445 0 429 1 0 1 1 0 8 0 amappl3 96 8888 0 8776 4 0 4 4 0 8 0 amappl2 88 1307 0 1247 2 0 2 2 0 8 0 amappl1 80 15210 0 14676 14 2 12 14 0 8 0 amappl 88 13508 0 13335 5 0 5 5 0 92 0 dma4096 4096 1 0 1 1 1 0 1 0 8 0 dma1024 1024 2 0 1 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 7 0 7 1 1 0 1 0 8 0 dma32 32 7 0 7 1 1 0 1 0 8 0 dma16 16 19 0 18 1 0 1 1 0 8 0 aobjpl 72 107 0 3 2 0 2 2 0 8 0 uaddrrnd 24 1865 0 1833 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 1865 0 1833 1 0 1 1 0 8 0 vmmpekpl 168 15729 0 15679 3 0 3 3 0 8 0 vmmpepl 168 119178 0 117408 89 9 80 89 0 357 0 vmsppl 344 1864 0 1833 4 0 4 4 0 8 0 rwobjpl 24 40575 0 34441 38 0 38 38 0 8 0 pdppl 4096 3736 0 3669 180 111 69 82 0 8 2 pvpl 32 947085 0 936941 357 257 100 350 0 265 4 pmappl 216 1864 0 1833 3 1 2 3 0 8 0 extentpl 40 56 0 38 1 0 1 1 0 8 0 phpool 112 590 0 240 12 0 12 12 0 8 0 ddb> machine ddbcpu 0 No such command ddb> trace fill_file(ffff8000012c6800,fffffd8079c22a58,fffffd806c537370,5,0,ffff80002a551120,de6dd32e50957b,1007d,5) at fill_file+0xb88 sys/kern/kern_sysctl.c:1548 sysctl_file(ffff80002a4fb468,4,20000100,ffff80002a4fb498,ffff8000376256e8) at sysctl_file+0x7db sys/kern/kern_sysctl.c:1728 kern_sysctl(ffff80002a4fb464,5,20000100,ffff80002a4fb498,0,fffffffffffffe59,228b6a869dcf2f4e) at kern_sysctl+0x5ff sys/kern/kern_sysctl.c:493 sys_sysctl(ffff8000376256e8,ffff80002a4fb5d0,ffff80002a4fb520) at sys_sysctl+0x41f syscall(ffff80002a4fb5d0) at syscall+0x97e sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x2825f19afb0, count: -6 ddb> machine ddbcpu 1 No such command ddb> trace fill_file(ffff8000012c6800,fffffd8079c22a58,fffffd806c537370,5,0,ffff80002a551120,de6dd32e50957b,1007d,5) at fill_file+0xb88 sys/kern/kern_sysctl.c:1548 sysctl_file(ffff80002a4fb468,4,20000100,ffff80002a4fb498,ffff8000376256e8) at sysctl_file+0x7db sys/kern/kern_sysctl.c:1728 kern_sysctl(ffff80002a4fb464,5,20000100,ffff80002a4fb498,0,fffffffffffffe59,228b6a869dcf2f4e) at kern_sysctl+0x5ff sys/kern/kern_sysctl.c:493 sys_sysctl(ffff8000376256e8,ffff80002a4fb5d0,ffff80002a4fb520) at sys_sysctl+0x41f syscall(ffff80002a4fb5d0) at syscall+0x97e sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x2825f19afb0, count: -6