kernel: protection fault trap, code=0 Stopped at done_flush+0x38: movl %eax,%dr6 ddb{0}> ddb{0}> set $lines = 0 ddb{0}> set $maxwidth = 0 ddb{0}> show panic the kernel did not panic ddb{0}> trace done_flush() at done_flush+0x38 vm_run(ffff800024684120) at vm_run+0x308 sys/arch/amd64/amd64/vmm.c:4485 vmmioctl(a00,c0205602,ffff800024684120,1,ffff80002e3d3500) at vmmioctl+0x192 sys/arch/amd64/amd64/vmm.c:661 VOP_IOCTL(fffffd806e5cdbb0,c0205602,ffff800024684120,1,fffffd807f7d7780,ffff80002e3d3500) at VOP_IOCTL+0x96 sys/kern/vfs_vops.c:264 vn_ioctl(fffffd806c699e58,c0205602,ffff800024684120,ffff80002e3d3500) at vn_ioctl+0xbc sys/kern/vfs_vnops.c:531 sys_ioctl(ffff80002e3d3500,ffff800024684238,ffff800024684290) at sys_ioctl+0x4a2 syscall(ffff800024684300) at syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800024684300) at syscall+0x489 sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xfc5ca75d0e0, count: -8 ddb{0}> show registers rdi 0x6c14 __ALIGN_SIZE+0x5c14 rsi 0xffff8000211ffe38 rbp 0xffff800024683e80 rbx 0x756e6547 rdx 0x49656e69 rcx 0x6c65746e rax 0xffffffffffffffdb r8 0 r9 0x10000 __ALIGN_SIZE+0xf000 r10 0xcfde24aa274e9b04 r11 0xbb83ea5f6c8b046e r12 0xffffffff82986120 dt_prov_static r13 0x246 r14 0xffff8000211ff800 r15 0xffff800024684120 rip 0xffffffff824f01b0 done_flush+0x38 cs 0x8 rflags 0x10046 __ALIGN_SIZE+0xf046 rsp 0xffff800024683cd6 ss 0x10 done_flush+0x38: movl %eax,%dr6 ddb{0}> show proc PROC (syz-executor.2) pid=433674 stat=onproc flags process=0 proc=4000000 pri=32, usrpri=84, nice=20 forw=0xffffffffffffffff, list=0xffff80002e37cd30,0xffff80002e3d22b0 process=0xffff8000ffff8858 user=0xffff80002467f000, vmspace=0xfffffd80674d9000 estcpu=36, cpticks=0, pctcpu=0.0 user=0, sys=0, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 9847 56096 10708 0 2 0 syz-executor.3 95799 337789 24126 0 2 0 syz-executor.0 95799 77626 24126 0 2 0x4000000 syz-executor.0 32541 53773 17892 0 2 0 syz-executor.1 32541 397410 17892 0 2 0x4000000 syz-executor.1 32541 437675 17892 0 2 0x4000000 syz-executor.1 32541 368239 17892 0 2 0x4000000 syz-executor.1 32541 74445 17892 0 2 0x4000000 syz-executor.1 9696 11101 186 0 2 0 syz-executor.2 * 9696 433674 186 0 7 0x4000000 syz-executor.2 91674 131660 19661 0 2 0 syz-executor.4 91674 276528 19661 0 3 0x4000080 fsleep syz-executor.4 76178 299814 86694 0 2 0 syz-executor.5 76178 78150 86694 0 3 0x4000080 fsleep syz-executor.5 60292 14315 21621 0 2 0 syz-executor.7 60292 95818 21621 0 3 0x4000080 netio syz-executor.7 60292 469019 21621 0 3 0x4000080 fsleep syz-executor.7 17892 5371 18664 0 3 0x82 nanoslp syz-executor.1 62819 55668 0 0 3 0x14200 acct acct 86694 2266 18664 0 3 0x82 nanoslp syz-executor.5 24126 145826 18664 0 3 0x82 nanoslp syz-executor.0 21621 449628 18664 0 3 0x82 nanoslp syz-executor.7 19661 524228 18664 0 3 0x82 nanoslp syz-executor.4 186 184392 18664 0 3 0x82 nanoslp syz-executor.2 10708 155803 18664 0 3 0x82 nanoslp syz-executor.3 79115 362104 0 0 3 0x14280 nfsidl nfsio 26777 210196 0 0 3 0x14280 nfsidl nfsio 59192 229917 0 0 3 0x14280 nfsidl nfsio 34418 373549 0 0 3 0x14280 nfsidl nfsio 78950 426737 0 0 3 0x14280 nfsidl nfsio 77724 170157 0 0 3 0x14280 nfsidl nfsio 87384 481119 0 0 3 0x14280 nfsidl nfsio 78223 420900 0 0 3 0x14280 nfsidl nfsio 71673 82760 0 0 3 0x14280 nfsidl nfsio 30382 401312 0 0 3 0x14280 nfsidl nfsio 5768 363869 0 0 3 0x14280 nfsidl nfsio 82150 424327 0 0 3 0x14280 nfsidl nfsio 26902 358900 0 0 3 0x14280 nfsidl nfsio 3971 334781 0 0 3 0x14280 nfsidl nfsio 7956 33310 0 0 3 0x14280 nfsidl nfsio 90078 318268 0 0 3 0x14280 nfsidl nfsio 24436 40722 0 0 3 0x14280 nfsidl nfsio 22012 224056 0 0 3 0x14280 nfsidl nfsio 46628 208253 0 0 3 0x14280 nfsidl nfsio 42284 99296 0 0 3 0x14280 nfsidl nfsio 2391 8984 0 0 3 0x14200 bored sosplice 84162 49363 18664 0 2 0x2 syz-executor.6 18664 274535 14970 0 3 0x82 thrsleep syz-fuzzer 18664 331976 14970 0 3 0x4000082 thrsleep syz-fuzzer 18664 61214 14970 0 3 0x4000082 thrsleep syz-fuzzer 18664 189674 14970 0 3 0x4000082 kqread syz-fuzzer 18664 236998 14970 0 3 0x4000082 thrsleep syz-fuzzer 18664 101470 14970 0 3 0x4000082 thrsleep syz-fuzzer 18664 295099 14970 0 3 0x4000082 thrsleep syz-fuzzer 18664 225080 14970 0 3 0x4000082 thrsleep syz-fuzzer 18664 257273 14970 0 3 0x4000082 thrsleep syz-fuzzer 18664 78634 14970 0 3 0x4000082 thrsleep syz-fuzzer 14970 504916 76866 0 3 0x10008a sigsusp ksh 76866 50315 95403 0 3 0x9a kqread sshd 19457 381780 1 0 3 0x100083 ttyin getty 95403 85187 1 0 3 0x88 kqread sshd 27147 269565 73299 74 3 0x1100092 bpf pflogd 73299 476908 1 0 3 0x80 netio pflogd 93554 205169 27739 73 3 0x1100090 kqread syslogd 27739 176567 1 0 3 0x100082 netio syslogd 31796 221769 1 0 3 0x100080 kqread resolvd 78181 158976 26289 77 3 0x100092 kqread dhcpleased 87813 339443 26289 77 3 0x100092 kqread dhcpleased 26289 137672 1 0 3 0x80 kqread dhcpleased 69012 496286 0 0 3 0x14200 bored smr 19837 64621 0 0 2 0x14200 zerothread 51523 433265 0 0 3 0x14200 aiodoned aiodoned 2891 338847 0 0 3 0x14200 syncer update 77952 280929 0 0 3 0x14200 cleaner cleaner 26652 201620 0 0 3 0x14200 reaper reaper 82911 402014 0 0 3 0x14200 pgdaemon pagedaemon 92595 150733 0 0 3 0x14200 bored viomb 62670 201611 0 0 3 0x40014200 acpi0 acpi0 32646 71819 0 0 7 0x40014200 idle1 38873 455083 0 0 3 0x14200 bored softnet 21843 445651 0 0 3 0x14200 bored softnet 72966 156735 0 0 3 0x14200 bored softnet 44725 93550 0 0 3 0x14200 bored softnet 98211 212053 0 0 3 0x14200 bored systqmp 3535 54329 0 0 3 0x14200 bored systq 91494 55744 0 0 3 0x40014200 bored softclock 18340 359481 0 0 3 0x40014200 idle0 1 449129 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks Process 9696 (syz-executor.2) thread 0xffff80002e3d3500 (433674) exclusive rwlock vcpu r = 0 (0xffff8000211ffbb0) #0 witness_lock+0x44d #1 vm_run+0x2e3 sys/arch/amd64/amd64/vmm.c:4452 #2 vmmioctl+0x192 sys/arch/amd64/amd64/vmm.c:661 #3 VOP_IOCTL+0x96 sys/kern/vfs_vops.c:264 #4 vn_ioctl+0xbc sys/kern/vfs_vnops.c:531 #5 sys_ioctl+0x4a2 #6 syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline] #6 syscall+0x489 sys/arch/amd64/amd64/trap.c:585 #7 Xsyscall+0x128 ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10212 6503K 7507K 78643K 36267 0 pcb 13 18K 22K 78643K 1066 0 rtable 185 14K 16K 78643K 1321 0 ifaddr 89 18K 20K 78643K 517 0 sysctl 2 0K 2K 78643K 3 0 counters 54 35K 36K 78643K 224 0 ioctlops 0 0K 4K 78643K 2305 0 iov 0 0K 32K 78643K 1168 0 mount 1 1K 1K 78643K 1 0 log 0 0K 0K 78643K 4 0 vnodes 1465 92K 92K 78643K 11779 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 5K 78643K 87 0 VM map 2 1K 1K 78643K 2 0 sem 12 3K 5K 78643K 18 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1697 195K 286K 78643K 12548 0 file desc 17 61K 85K 78643K 8405 0 sigio 0 0K 0K 78643K 160 0 proc 70 91K 127K 78643K 1279 0 subproc 104 6K 6K 78643K 281 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 0 0K 0K 78643K 328 0 in_multi 68 4K 6K 78643K 330 0 ether_multi 1 0K 0K 78643K 34 0 mrt 7 0K 0K 78643K 27 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 181 811K 811K 78643K 181 0 exec 0 0K 2K 78643K 2556 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 378 515K 515K 78643K 48538 0 UVM aobj 131 4K 4K 78643K 134 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 153 0 NDP 14 0K 2K 78643K 142 0 temp 137 4730K 5370K 78643K 106697 0 kqueue 12 18K 26K 78643K 603 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 120 412 0 409 6 5 1 3 0 8 0 rtentry 112 461 0 383 5 2 3 4 0 8 0 unpcb 136 5823 0 5803 55 52 3 7 0 8 2 syncache 296 43 0 43 10 10 0 1 0 8 0 tcpqe 32 107 0 107 4 4 0 1 0 8 0 tcpcb 736 2481 0 2474 97 90 7 10 0 8 6 arp 120 61 0 47 1 0 1 1 0 8 0 inpcb 312 6087 0 6080 112 101 11 14 0 8 10 nd6 48 68 0 49 1 0 1 1 0 8 0 pkpcb 40 91 0 91 5 5 0 1 0 8 0 kcovpl 48 21 0 13 1 0 1 1 0 8 0 ppxss 1248 44 0 44 12 12 0 1 0 8 0 pfstscr 40 4 0 4 1 1 0 1 0 8 0 pffrag 232 91 0 89 5 4 1 1 0 482 0 pffrnode 88 91 0 89 5 4 1 1 0 8 0 pffrent 40 333 0 331 7 6 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 23 0 21 1 0 1 1 0 8 0 pfstkey 112 31 0 29 1 0 1 1 0 8 0 pfstate 336 27 0 25 3 2 1 3 0 8 0 pfrule 1360 25 0 24 2 1 1 2 0 8 0 rttmr 64 2 0 2 1 1 0 1 0 8 0 art_heap8 4096 2 0 1 2 1 1 2 0 8 0 art_heap4 256 1861 0 1540 39 16 23 30 0 8 0 art_table 32 1863 0 1541 4 1 3 4 0 8 0 art_node 16 423 0 356 1 0 1 1 0 8 0 sysvmsgpl 40 78 0 70 1 0 1 1 0 8 0 semapl 112 10 0 0 1 0 1 1 0 8 0 shmpl 112 131 0 3 4 0 4 4 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 12676 0 11222 92 0 92 92 0 8 0 ffsino 272 12676 0 11222 98 0 98 98 0 8 0 nchpl 144 24048 0 22405 63 0 63 63 0 8 0 uvmvnodes 80 5926 0 0 121 0 121 121 0 8 0 vnodes 224 5926 0 0 349 0 349 349 0 8 0 namei 1024 93473 0 93473 6 5 1 2 0 8 1 percpumem 16 124 0 85 1 0 1 1 0 8 0 vcpupl 2048 29 0 1 4 0 4 4 0 8 0 vmpool 560 100 0 72 2 0 2 2 0 8 0 kstatmem 264 198 0 170 7 4 3 3 0 8 0 scsiplug 72 3 0 3 1 1 0 1 0 8 0 scxspl 216 79805 0 79805 11 10 1 7 0 8 1 plimitpl 152 1114 0 1099 1 0 1 1 0 8 0 sigapl 424 8734 0 8665 9 1 8 8 0 8 0 futexpl 64 82315 0 82312 5 4 1 1 0 8 0 knotepl 120 536 0 0 8 0 8 8 0 8 0 kqueuepl 216 1651 0 1643 33 32 1 8 0 8 0 pipepl 336 1764 0 1736 59 56 3 8 0 8 0 fdescpl 496 8673 0 8643 5 1 4 5 0 8 0 filepl 152 61922 0 61678 111 95 16 22 0 8 4 lockfpl 104 2942 0 2940 6 5 1 2 0 8 0 lockfspl 48 769 0 767 1 0 1 1 0 8 0 sessionpl 144 37 0 20 1 0 1 1 0 8 0 pgrppl 48 107 0 90 1 0 1 1 0 8 0 ucredpl 96 6448 0 6433 1 0 1 1 0 8 0 zombiepl 144 8665 0 8665 2 1 1 1 0 8 1 processpl 1064 8734 0 8665 5 0 5 5 0 8 0 procpl 672 22432 0 22344 21 13 8 9 0 8 0 srpgc 96 17 0 17 5 5 0 1 0 8 0 sosppl 168 41 0 41 10 10 0 1 0 8 0 sockpl 480 12424 0 12390 268 246 22 30 0 8 17 mcl64k 65536 15 0 0 2 0 2 2 0 8 0 mcl16k 16384 14 0 0 2 0 2 2 0 8 0 mcl12k 12288 17 0 0 2 0 2 2 0 8 0 mcl9k 9216 9 0 0 1 0 1 1 0 8 0 mcl8k 8192 17 0 0 3 0 3 3 0 8 0 mcl4k 4096 17 0 0 3 0 3 3 0 8 0 mcl2k2 2112 6 0 0 1 0 1 1 0 8 0 mcl2k 2048 270 0 0 19 1 18 19 0 8 0 mtagpl 96 925 0 0 18 0 18 18 0 8 0 mbufpl 256 1376 0 0 69 0 69 69 0 8 0 bufpl 288 18651 0 12319 453 0 453 453 0 8 0 anonpl 24 1614541 0 1596302 254 131 123 157 0 186 0 amapchunkpl 152 140339 0 139622 52 18 34 40 0 158 0 amappl16 200 22377 0 21712 121 84 37 48 0 8 1 amappl15 192 2304 0 2301 1 0 1 1 0 8 0 amappl14 184 348 0 341 2 1 1 1 0 8 0 amappl13 176 951 0 948 1 0 1 1 0 8 0 amappl12 168 686 0 683 2 1 1 1 0 8 0 amappl11 160 413 0 392 1 0 1 1 0 8 0 amappl10 152 1961 0 1949 1 0 1 1 0 8 0 amappl9 144 2158 0 2152 1 0 1 1 0 8 0 amappl8 136 1327 0 1221 4 0 4 4 0 8 0 amappl7 128 490 0 477 1 0 1 1 0 8 0 amappl6 120 2001 0 1975 2 1 1 2 0 8 0 amappl5 112 9340 0 9316 1 0 1 1 0 8 0 amappl4 104 1692 0 1660 2 0 2 2 0 8 0 amappl3 96 26284 0 26229 2 0 2 2 0 8 0 amappl2 88 10249 0 10182 3 1 2 3 0 8 0 amappl1 80 205075 0 204407 20 5 15 20 0 8 0 amappl 88 47565 0 47358 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 72 133 0 3 3 0 3 3 0 8 0 uaddrrnd 24 8773 0 8715 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 8773 0 8715 1 0 1 1 0 8 0 vmmpekpl 168 61515 0 61452 4 0 4 4 0 8 0 vmmpepl 168 832487 0 829631 244 113 131 156 0 357 0 vmsppl 368 8772 0 8715 8 2 6 6 0 8 0 rwobjpl 56 206030 0 198208 122 9 113 114 0 8 0 pdppl 4096 17553 0 17458 441 344 97 98 0 8 2 pvpl 32 3250377 0 3227210 471 273 198 268 0 265 0 pmappl 248 8772 0 8715 5 1 4 4 0 8 0 extentpl 40 58 0 38 1 0 1 1 0 8 0 phpool 112 1520 0 621 26 0 26 26 0 8 0 ddb{0}> machine ddbcpu 0 Invalid cpu 0 ddb{0}> trace done_flush() at done_flush+0x38 vm_run(ffff800024684120) at vm_run+0x308 sys/arch/amd64/amd64/vmm.c:4485 vmmioctl(a00,c0205602,ffff800024684120,1,ffff80002e3d3500) at vmmioctl+0x192 sys/arch/amd64/amd64/vmm.c:661 VOP_IOCTL(fffffd806e5cdbb0,c0205602,ffff800024684120,1,fffffd807f7d7780,ffff80002e3d3500) at VOP_IOCTL+0x96 sys/kern/vfs_vops.c:264 vn_ioctl(fffffd806c699e58,c0205602,ffff800024684120,ffff80002e3d3500) at vn_ioctl+0xbc sys/kern/vfs_vnops.c:531 sys_ioctl(ffff80002e3d3500,ffff800024684238,ffff800024684290) at sys_ioctl+0x4a2 syscall(ffff800024684300) at syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800024684300) at syscall+0x489 sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xfc5ca75d0e0, count: -8 ddb{0}> machine ddbcpu 1 Stopped at x86_ipi_db+0x1a: addq $0x8,%rsp ddb{1}> trace x86_ipi_db(ffff800020cd8ff0) 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(ffff800020cd8ff0) at sched_idle+0x417 sys/kern/kern_sched.c:178 end trace frame: 0x0, count: -5