kernel: protection fault trap, code=0 Stopped at fill_file+0xa36: 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(ffff800000ec3c00,fffffd80733e6b50,fffffd8069b89040,4,0,ffff800027fc4008,9451bc532c11844c,683,ffff800021720dc0) at fill_file+0xa36 sys/kern/kern_sysctl.c:1307 sysctl_file(ffff8000216fc2d8,4,20000000,ffff8000216fc308,ffff800021720dc0) at sysctl_file+0xe87 sys/kern/kern_sysctl.c:1446 kern_sysctl(ffff8000216fc2d4,5,20000000,ffff8000216fc308,0,29,542739d34ce4d947) at kern_sysctl+0x107 sys/kern/kern_sysctl.c:455 sys_sysctl(ffff800021720dc0,ffff8000216fc378,ffff8000216fc3c0) at sys_sysctl+0x209 sys/kern/kern_sysctl.c:250 syscall(ffff8000216fc440) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:625 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x5a237d6a380, count: -6 ddb> show registers rdi 0xffff800021720dc4 rsi 0xffff800021720dc4 rbp 0xffff8000216fbe60 rbx 0 rdx 0 rcx 0x1 rax 0x5e4216af048702de r8 0x32 r9 0 r10 0x9e165e3737827ccb r11 0xf0e1daefe5856ea7 r12 0xfffffd8069b89040 r13 0x4 r14 0xffff800027fc4008 r15 0xffff800000ec3c00 rip 0xffffffff81674276 fill_file+0xa36 cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff8000216fbd40 ss 0x10 fill_file+0xa36: movl 0x8(%rax),%eax ddb> show proc PROC (syz-executor.4) pid=475315 stat=onproc flags process=0 proc=4000000 pri=32, usrpri=85, nice=20 forw=0xffffffffffffffff, list=0xffff800021721330,0xffff800021736de0 process=0xffff800027fc4fc8 user=0xffff8000216f7000, vmspace=0xfffffd806f43ac20 estcpu=36, cpticks=0, pctcpu=0.0 user=0, sys=0, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 15377 368546 1106 0 2 0 syz-executor.5 12824 328528 93561 0 2 0 syz-executor.2 12824 141336 93561 0 2 0x4000000 syz-executor.2 26959 125935 24052 0 2 0 syz-executor.1 26959 136502 24052 0 2 0x4000000 syz-executor.1 24198 230393 39033 0 2 0 syz-executor.4 24198 373848 39033 0 3 0x4000080 lockf syz-executor.4 *24198 475315 39033 0 7 0x4000000 syz-executor.4 24198 156891 39033 0 3 0x4000080 sysctllk syz-executor.4 23325 209403 3911 0 2 0 syz-executor.7 23325 465106 3911 0 3 0x4000080 netio syz-executor.7 23325 190046 3911 0 2 0x4000000 syz-executor.7 24572 360718 82626 0 2 0 syz-executor.3 24572 87445 82626 0 3 0x4000080 fsleep syz-executor.3 24572 132075 82626 0 2 0x4000000 syz-executor.3 46086 244122 17114 0 3 0x80 nanoslp syz-executor.0 46086 123058 17114 0 3 0x4000080 netcon syz-executor.0 46086 287622 17114 0 3 0x4000080 netcon syz-executor.0 1106 432530 93285 0 3 0x82 nanoslp syz-executor.5 82626 41828 93285 0 3 0x82 nanoslp syz-executor.3 24052 43688 93285 0 3 0x82 nanoslp syz-executor.1 93561 463516 93285 0 3 0x82 nanoslp syz-executor.2 39033 498248 93285 0 3 0x82 nanoslp syz-executor.4 3911 49934 93285 0 3 0x82 nanoslp syz-executor.7 44988 155271 1 0 3 0x100083 ttyin getty 17114 55811 93285 0 3 0x82 nanoslp syz-executor.0 61985 130827 93285 0 3 0x82 piperd syz-executor.6 65998 365244 0 0 3 0x14280 nfsidl nfsio 23976 332249 0 0 3 0x14280 nfsidl nfsio 84708 507532 0 0 3 0x14280 nfsidl nfsio 63939 227933 0 0 3 0x14280 nfsidl nfsio 35753 298570 0 0 3 0x14280 nfsidl nfsio 61392 226589 0 0 3 0x14280 nfsidl nfsio 61587 309606 0 0 3 0x14280 nfsidl nfsio 62865 511765 0 0 3 0x14280 nfsidl nfsio 327 233395 0 0 3 0x14280 nfsidl nfsio 54838 6670 0 0 3 0x14280 nfsidl nfsio 82386 222151 0 0 3 0x14280 nfsidl nfsio 27508 336951 0 0 3 0x14280 nfsidl nfsio 79974 230907 0 0 3 0x14280 nfsidl nfsio 59842 112999 0 0 3 0x14280 nfsidl nfsio 70754 228274 0 0 3 0x14280 nfsidl nfsio 62577 62714 0 0 3 0x14280 nfsidl nfsio 81983 342874 0 0 3 0x14280 nfsidl nfsio 38267 498494 0 0 3 0x14280 nfsidl nfsio 85129 52356 0 0 3 0x14280 nfsidl nfsio 61206 259980 0 0 3 0x14280 nfsidl nfsio 89846 518368 0 0 3 0x14200 bored sosplice 93285 197592 42022 0 3 0x82 wait syz-fuzzer 93285 123739 42022 0 3 0x4000082 thrsleep syz-fuzzer 93285 365973 42022 0 3 0x4000082 wait syz-fuzzer 93285 396704 42022 0 3 0x4000082 wait syz-fuzzer 93285 234906 42022 0 3 0x4000082 thrsleep syz-fuzzer 93285 12073 42022 0 3 0x4000082 wait syz-fuzzer 93285 49407 42022 0 3 0x4000082 thrsleep syz-fuzzer 93285 272629 42022 0 3 0x4000082 thrsleep syz-fuzzer 93285 339659 42022 0 3 0x4000082 wait syz-fuzzer 93285 435485 42022 0 3 0x4000082 wait syz-fuzzer 93285 420248 42022 0 3 0x4000082 thrsleep syz-fuzzer 93285 276519 42022 0 3 0x4000082 wait syz-fuzzer 93285 25663 42022 0 3 0x4000082 kqread syz-fuzzer 93285 132105 42022 0 3 0x4000082 wait syz-fuzzer 42022 388145 71704 0 3 0x10008a sigsusp ksh 71704 27667 73122 0 3 0x9a kqread sshd 73122 449551 1 0 3 0x88 kqread sshd 39148 365447 86903 73 3 0x1100090 kqread syslogd 86903 311517 1 0 3 0x100082 netio syslogd 41993 339361 1 0 3 0x100080 kqread resolvd 66603 48441 31088 77 3 0x100092 kqread dhcpleased 81024 386027 31088 77 3 0x100092 kqread dhcpleased 31088 498125 1 0 3 0x80 kqread dhcpleased 79543 101049 0 0 3 0x14200 bored smr 82353 318395 0 0 2 0x14200 zerothread 26679 106645 0 0 3 0x14200 aiodoned aiodoned 35047 220037 0 0 3 0x14200 syncer update 64474 31917 0 0 3 0x14200 cleaner cleaner 15310 303772 0 0 3 0x14200 reaper reaper 54319 418451 0 0 3 0x14200 pgdaemon pagedaemon 78425 394288 0 0 3 0x14200 bored viomb 59717 298095 0 0 3 0x40014200 acpi0 acpi0 35263 405913 0 0 3 0x14200 bored softnet 40236 224238 0 0 3 0x14200 bored softnet 62130 342987 0 0 3 0x14200 bored softnet 30842 494941 0 0 3 0x14200 bored softnet 33654 275425 0 0 3 0x14200 bored systqmp 86863 155904 0 0 3 0x14200 bored systq 79980 90981 0 0 2 0x40014200 softclock 99636 390965 0 0 3 0x40014200 idle0 1 34123 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 10255 6578K 7013K 78643K 37481 0 pcb 15 20K 23K 78643K 3279 0 rtable 214 17K 18K 78643K 4897 0 ifaddr 115 32K 33K 78643K 1622 0 sysctl 2 0K 2K 78643K 94 0 counters 30 17K 17K 78643K 549 0 ioctlops 0 0K 4K 78643K 1517 0 iov 0 0K 36K 78643K 2426 0 mount 1 1K 1K 78643K 1 0 log 0 0K 0K 78643K 4 0 vnodes 1679 105K 105K 78643K 13300 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 9K 78643K 155 0 VM map 2 1K 1K 78643K 2 0 sem 12 0K 0K 78643K 4124 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1697 195K 286K 78643K 12548 0 file desc 17 61K 69K 78643K 17438 0 sigio 0 0K 0K 78643K 332 0 proc 63 59K 84K 78643K 4091 0 subproc 104 6K 6K 78643K 1483 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 0 0K 0K 78643K 1651 0 in_multi 87 5K 6K 78643K 1896 0 ether_multi 1 0K 0K 78643K 132 0 mrt 1 0K 0K 78643K 100 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 235 1049K 1049K 78643K 235 0 exec 0 0K 1K 78643K 3928 0 pfkey data 0 0K 0K 78643K 8 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 8 62K 64K 78643K 10 0 UVM amap 358 92K 106K 78643K 110124 0 UVM aobj 131 4K 4K 78643K 138 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 577 0 NDP 18 0K 1K 78643K 624 0 temp 155 5772K 71434K 78643K 185389 0 kqueue 13 20K 28K 78643K 1344 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 1352 0 1349 18 17 1 3 0 8 0 rtentry 112 1645 0 1559 6 3 3 4 0 8 0 unpcb 144 22892 0 22877 230 229 1 11 0 8 0 syncache 296 143 0 143 39 38 1 1 0 8 1 sackhl 24 2 0 2 2 2 0 1 0 8 0 tcpqe 32 98 301 98 6 6 0 1 0 8 0 tcpcb 776 6050 0 6036 248 246 2 15 0 8 0 arp 88 234 0 220 1 0 1 1 0 8 0 ipq 40 6 0 5 5 4 1 1 0 8 0 ipqe 40 17 0 16 5 4 1 1 0 8 0 inpcb 336 17216 0 17194 322 318 4 16 0 8 2 nd6 48 396 0 377 1 0 1 1 0 8 0 pkpcb 40 95 0 95 9 9 0 1 0 8 0 kcovpl 48 113 0 105 1 0 1 1 0 8 0 mppekey 1024 16 0 16 8 8 0 1 0 8 0 ppxss 1160 315 0 315 35 35 0 1 0 8 0 pppxif 1360 149 0 149 17 17 0 1 0 8 0 pfstscr 40 69 0 55 2 1 1 1 0 8 0 pfosfp 40 7 0 5 1 0 1 1 0 8 0 pfosfpen 112 7 0 5 1 0 1 1 0 8 0 pfanchor 1280 653 19 142 47 4 43 43 0 8 0 pfqueue 264 9 0 9 3 3 0 1 0 8 0 pfstitem 24 41 0 0 1 0 1 1 0 8 0 pfstkey 128 133 0 123 2 1 1 1 0 8 0 pfstate 352 68 0 46 4 1 3 3 0 8 0 rttmr 136 19 0 19 7 7 0 1 0 8 0 art_heap8 4096 12 0 11 12 11 1 2 0 8 0 art_heap4 256 7408 0 6993 105 76 29 30 0 8 0 art_table 32 7420 0 7004 4 0 4 4 0 8 0 art_node 16 1630 0 1555 1 0 1 1 0 8 0 sysvmsgpl 40 4 0 4 1 1 0 1 0 8 0 semapl 112 4122 0 4112 1 0 1 1 0 8 0 shmpl 112 135 0 7 4 0 4 4 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 23529 0 22047 93 0 93 93 0 8 0 ffsino 240 23529 0 22047 89 1 88 88 0 8 0 nchpl 144 47118 0 45473 63 1 62 63 0 8 0 rtmask 32 7 0 7 2 2 0 1 0 8 0 uvmvnodes 80 7338 0 0 150 0 150 150 0 8 0 vnodes 216 7338 0 0 408 0 408 408 0 8 0 namei 1024 190919 0 190919 22 21 1 3 0 8 1 vmpool 664 74 0 74 13 13 0 1 0 8 0 kstatmem 264 690 0 654 4 1 3 3 0 8 0 scsiplug 72 14 0 14 5 5 0 1 0 8 0 scxspl 216 163075 0 163075 51 50 1 8 0 8 1 plimitpl 152 2903 0 2888 1 0 1 1 0 8 0 sigapl 424 17608 0 17543 10 2 8 8 0 8 0 futexpl 64 177919 0 177918 23 22 1 1 0 8 0 knotepl 120 260842 0 260711 160 156 4 12 0 8 0 kqueuepl 184 3568 0 3559 55 52 3 6 0 8 2 pipepl 288 4995 0 4967 91 88 3 7 0 8 0 fdescpl 432 17489 0 17461 9 5 4 4 0 8 0 filepl 120 144601 0 144347 239 229 10 17 0 8 1 lockfpl 104 4903 0 4899 15 14 1 2 0 8 0 lockfspl 48 1431 0 1428 1 0 1 1 0 8 0 sessionpl 144 130 0 114 1 0 1 1 0 8 0 pgrppl 48 434 0 418 1 0 1 1 0 8 0 ucredpl 104 15762 0 15752 1 0 1 1 0 8 0 zombiepl 144 17543 0 17543 5 4 1 1 0 8 1 processpl 1008 17608 0 17543 12 3 9 9 0 8 0 procpl 696 42158 0 42069 25 16 9 10 0 8 0 sosppl 168 155 0 154 27 26 1 1 0 8 0 sockpl 456 41660 0 41619 1141 1135 6 37 0 8 0 mcl64k 65536 616 0 615 63 62 1 1 0 8 0 mcl16k 16384 348 0 345 58 57 1 1 0 8 0 mcl12k 12288 518 0 518 69 69 0 1 0 8 0 mcl9k 9216 236 0 236 55 55 0 1 0 8 0 mcl8k 8192 1259 0 1254 59 58 1 1 0 8 0 mcl4k 4096 1876 0 1872 49 48 1 1 0 8 0 mcl2k2 2112 116 0 116 52 52 0 1 0 8 0 mcl2k 2048 113007 0 112883 89 71 18 31 0 8 0 mtagpl 96 2606 0 2245 37 28 9 10 0 8 0 mbufpl 256 366586 0 365962 1386 1339 47 97 0 8 2 bufpl 288 30424 0 23034 528 0 528 528 0 8 0 anonpl 24 3285831 0 3269356 426 289 137 187 0 188 11 amapchunkpl 152 330371 0 329637 247 213 34 65 0 158 0 amappl16 200 25443 0 24773 123 87 36 48 0 8 0 amappl15 192 12 0 12 3 3 0 1 0 8 0 amappl14 184 635 0 620 2 1 1 2 0 8 0 amappl13 176 18 0 18 3 3 0 1 0 8 0 amappl12 168 1669 0 1667 1 0 1 1 0 8 0 amappl11 160 47 0 37 1 0 1 1 0 8 0 amappl10 152 154 0 145 1 0 1 1 0 8 0 amappl9 144 1020 0 1019 1 0 1 1 0 8 0 amappl8 136 764 0 667 4 0 4 4 0 8 0 amappl7 128 394 0 368 2 0 2 2 0 8 0 amappl6 120 697 0 676 2 1 1 2 0 8 0 amappl5 112 758 0 752 1 0 1 1 0 8 0 amappl4 104 2043 0 2011 2 1 1 2 0 8 0 amappl3 96 48430 0 48371 2 0 2 2 0 8 0 amappl2 88 18943 0 18866 3 1 2 3 0 8 0 amappl1 80 385766 0 385019 42 26 16 26 0 8 0 amappl 88 108357 0 108153 6 0 6 6 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 72 137 0 7 3 0 3 3 0 8 0 uaddrrnd 24 17563 0 17535 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 17563 0 17535 1 0 1 1 0 8 0 vmmpekpl 168 129833 0 129789 3 0 3 3 0 8 0 vmmpepl 168 1608222 0 1605242 540 394 146 161 0 357 6 vmsppl 344 17562 0 17535 3 0 3 3 0 8 0 rwobjpl 24 398809 0 389488 64 7 57 57 0 8 0 pdppl 4096 35132 0 35070 1245 1181 64 66 0 8 2 pvpl 32 6834774 0 6812369 979 742 237 360 0 265 25 pmappl 216 17562 0 17535 2 0 2 2 0 8 0 extentpl 40 56 0 38 1 0 1 1 0 8 0 phpool 112 4242 0 3358 27 0 27 27 0 8 0 ddb> machine ddbcpu 0 No such command ddb> trace fill_file(ffff800000ec3c00,fffffd80733e6b50,fffffd8069b89040,4,0,ffff800027fc4008,9451bc532c11844c,683,ffff800021720dc0) at fill_file+0xa36 sys/kern/kern_sysctl.c:1307 sysctl_file(ffff8000216fc2d8,4,20000000,ffff8000216fc308,ffff800021720dc0) at sysctl_file+0xe87 sys/kern/kern_sysctl.c:1446 kern_sysctl(ffff8000216fc2d4,5,20000000,ffff8000216fc308,0,29,542739d34ce4d947) at kern_sysctl+0x107 sys/kern/kern_sysctl.c:455 sys_sysctl(ffff800021720dc0,ffff8000216fc378,ffff8000216fc3c0) at sys_sysctl+0x209 sys/kern/kern_sysctl.c:250 syscall(ffff8000216fc440) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:625 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x5a237d6a380, count: -6 ddb> machine ddbcpu 1 No such command ddb> trace fill_file(ffff800000ec3c00,fffffd80733e6b50,fffffd8069b89040,4,0,ffff800027fc4008,9451bc532c11844c,683,ffff800021720dc0) at fill_file+0xa36 sys/kern/kern_sysctl.c:1307 sysctl_file(ffff8000216fc2d8,4,20000000,ffff8000216fc308,ffff800021720dc0) at sysctl_file+0xe87 sys/kern/kern_sysctl.c:1446 kern_sysctl(ffff8000216fc2d4,5,20000000,ffff8000216fc308,0,29,542739d34ce4d947) at kern_sysctl+0x107 sys/kern/kern_sysctl.c:455 sys_sysctl(ffff800021720dc0,ffff8000216fc378,ffff8000216fc3c0) at sys_sysctl+0x209 sys/kern/kern_sysctl.c:250 syscall(ffff8000216fc440) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:625 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x5a237d6a380, count: -6