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(ffff800030420980) at vm_run+0x169 vmmioctl(a00,c0205602,ffff800030420980,1,ffff80002b8a32a8) at vmmioctl+0x2a1 sys/dev/vmm/vmm.c:242 VOP_IOCTL(fffffd80744301b8,c0205602,ffff800030420980,1,fffffd807f7d7138,ffff80002b8a32a8) at VOP_IOCTL+0x97 sys/kern/vfs_vops.c:264 vn_ioctl(fffffd8067cc90a8,c0205602,ffff800030420980,ffff80002b8a32a8) at vn_ioctl+0xc0 sys/kern/vfs_vnops.c:525 sys_ioctl(ffff80002b8a32a8,ffff800030420b60,ffff800030420ab0) at sys_ioctl+0x4a2 syscall(ffff800030420b60) at syscall+0x5ae mi_syscall sys/sys/syscall_mi.h:183 [inline] syscall(ffff800030420b60) at syscall+0x5ae sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xb31affcd550, count: -8 ddb{0}> show registers rdi 0x6c14 __ALIGN_SIZE+0x5c14 rsi 0xffff800033f44650 rbp 0xffff8000304206d0 rbx 0x756e6547 rdx 0x49656e69 rcx 0x6c65746e rax 0xffffffffffffffbf r8 0 r9 0x10000 __ALIGN_SIZE+0xf000 r10 0x1b9a7776e762da42 r11 0xb4f86b39bd1a7517 r12 0xffffffff82d3bff0 cpu_info_full_primary+0x1ff0 r13 0x246 r14 0xffff800033f44000 r15 0xffff800030420980 rip 0xffffffff8138173d done_flush+0x38 cs 0x8 rflags 0x10046 __ALIGN_SIZE+0xf046 rsp 0xffff800030420566 ss 0x10 done_flush+0x38: movl %eax,%dr6 ddb{0}> show proc PROC (syz-executor.7) tid=277815 pid=93153 tcnt=2 stat=onproc flags process=0 proc=4000000 runpri=32, usrpri=75, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0x0 forw=0xffffffffffffffff, list=0xffff80002b8a4298,0xffffffff82e58368 process=0xffff80002a222c88 user=0xffff80003041b000, vmspace=0xfffffd80788cc028 estcpu=36, cpticks=0, pctcpu=0.0, user=0, sys=0, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 93153 85670 90862 0 3 0x80 fsleep syz-executor.7 *93153 277815 90862 0 7 0x4000000 syz-executor.7 69129 204104 1044 0 3 0x80 nanoslp syz-executor.5 69129 154326 1044 0 3 0x4000080 fsleep syz-executor.5 69129 473943 1044 0 3 0x4000080 fsleep syz-executor.5 69129 393929 1044 0 3 0x4000080 fsleep syz-executor.5 41010 429944 89512 0 3 0x80 fsleep syz-executor.1 41010 502818 89512 0 3 0x4000080 dtread syz-executor.1 66460 521422 94565 0 3 0x80 fsleep syz-executor.4 66460 24845 94565 0 3 0x4000080 fsleep syz-executor.4 66460 183623 94565 0 3 0x4000080 kqpoll syz-executor.4 66460 337337 94565 0 3 0x4000080 kqpoll syz-executor.4 76024 458895 94825 0 3 0x80 fsleep syz-executor.0 76024 213328 94825 0 3 0x4000080 netcon syz-executor.0 76024 422462 94825 0 3 0x4000080 fsleep syz-executor.0 94929 273099 15326 0 3 0x80 fsleep syz-executor.2 94929 134200 15326 0 3 0x4000080 netio syz-executor.2 94929 132202 15326 0 3 0x4000080 fsleep syz-executor.2 94929 242986 15326 0 3 0x4000080 fsleep syz-executor.2 28917 386687 95891 0 3 0x80 fsleep syz-executor.6 28917 150369 95891 0 3 0x4000080 fsleep syz-executor.6 28917 489646 95891 0 3 0x4000080 fsleep syz-executor.6 28917 31561 95891 0 3 0x4000080 netio syz-executor.6 15326 205406 16809 0 3 0x82 nanoslp syz-executor.2 89512 237551 16809 0 3 0x82 nanoslp syz-executor.1 90862 338399 16809 0 3 0x82 nanoslp syz-executor.7 95891 521082 16809 0 3 0x82 nanoslp syz-executor.6 1044 501783 16809 0 3 0x82 nanoslp syz-executor.5 94565 300010 16809 0 3 0x82 nanoslp syz-executor.4 94825 277755 16809 0 3 0x82 nanoslp syz-executor.0 92179 43385 16809 0 2 0x2 syz-executor.3 24015 27913 0 0 3 0x14280 nfsidl nfsio 83684 402355 0 0 3 0x14280 nfsidl nfsio 17129 471709 0 0 3 0x14280 nfsidl nfsio 49223 321801 0 0 3 0x14280 nfsidl nfsio 18794 29530 0 0 3 0x14280 nfsidl nfsio 89419 321925 0 0 3 0x14280 nfsidl nfsio 95669 194968 0 0 3 0x14280 nfsidl nfsio 94716 57849 0 0 3 0x14280 nfsidl nfsio 9477 251193 0 0 3 0x14280 nfsidl nfsio 37164 298102 0 0 3 0x14280 nfsidl nfsio 49545 169180 0 0 3 0x14280 nfsidl nfsio 63269 50841 0 0 3 0x14280 nfsidl nfsio 83107 126133 0 0 3 0x14280 nfsidl nfsio 46672 105214 0 0 3 0x14280 nfsidl nfsio 73821 295049 0 0 3 0x14280 nfsidl nfsio 6767 439069 0 0 3 0x14280 nfsidl nfsio 68625 216449 0 0 3 0x14280 nfsidl nfsio 14093 298472 0 0 3 0x14280 nfsidl nfsio 55112 489784 0 0 3 0x14280 nfsidl nfsio 17054 359394 0 0 3 0x14280 nfsidl nfsio 59214 181207 0 0 3 0x14200 bored sosplice 16809 67437 66535 0 3 0x2000082 thrsleep syz-fuzzer 16809 372797 66535 0 3 0x6000082 nanoslp syz-fuzzer 16809 7990 66535 0 3 0x6000082 thrsleep syz-fuzzer 16809 153648 66535 0 3 0x6000082 wait syz-fuzzer 16809 190353 66535 0 3 0x6000082 thrsleep syz-fuzzer 16809 93293 66535 0 3 0x6000082 wait syz-fuzzer 16809 522176 66535 0 3 0x6000082 wait syz-fuzzer 16809 71590 66535 0 3 0x6000082 thrsleep syz-fuzzer 16809 31325 66535 0 3 0x6000082 wait syz-fuzzer 16809 485412 66535 0 3 0x6000082 thrsleep syz-fuzzer 16809 372811 66535 0 3 0x6000082 thrsleep syz-fuzzer 16809 305789 66535 0 3 0x6000082 wait syz-fuzzer 16809 515138 66535 0 3 0x6000082 wait syz-fuzzer 16809 46272 66535 0 3 0x6000082 wait syz-fuzzer 16809 206466 66535 0 3 0x6000082 wait syz-fuzzer 16809 20678 66535 0 3 0x6000082 kqread syz-fuzzer 66535 224786 79572 0 3 0x10008a sigsusp ksh 79572 486310 13868 0 3 0x9a kqread sshd 64419 20658 1 0 3 0x100083 ttyin getty 13868 446383 1 0 3 0x88 kqread sshd 90028 302656 39485 74 3 0x1100092 bpf pflogd 39485 162730 1 0 3 0x80 netio pflogd 53815 397275 25761 73 3 0x1100090 kqread syslogd 25761 41813 1 0 3 0x100082 netio syslogd 55660 380214 1 0 3 0x100080 kqread resolvd 52130 70113 67620 77 3 0x100092 kqread dhcpleased 62569 149791 67620 77 3 0x100092 kqread dhcpleased 67620 462848 1 0 3 0x80 kqread dhcpleased 29124 236621 0 0 3 0x14200 bored smr 56288 348169 0 0 3 0x14200 pgzero zerothread 67784 324740 0 0 3 0x14200 aiodoned aiodoned 28468 243412 0 0 3 0x14200 syncer update 87003 40565 0 0 3 0x14200 cleaner cleaner 32349 19548 0 0 3 0x14200 reaper reaper 64583 394418 0 0 3 0x14200 pgdaemon pagedaemon 92923 31840 0 0 3 0x14200 bored viomb 32112 313472 0 0 3 0x40014200 acpi0 acpi0 83402 368951 0 0 7 0x40014200 idle1 29041 412614 0 0 3 0x14200 bored softnet3 7720 195348 0 0 3 0x14200 bored softnet2 97869 337779 0 0 3 0x14200 bored softnet1 57175 298027 0 0 3 0x14200 bored softnet0 20927 104286 0 0 3 0x14200 bored systqmp 46879 408148 0 0 3 0x14200 bored systq 51110 511946 0 0 3 0x14200 tmoslp softclockmp 84392 137298 0 0 3 0x40014200 tmoslp softclock 21234 255638 0 0 3 0x40014200 idle0 1 383431 0 0 3 0x80082 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks Process 93153 (syz-executor.7) thread 0xffff80002b8a32a8 (277815) exclusive rwlock vcpu r = 0 (0xffff800033f443b8) #0 witness_lock+0x447 #1 vm_run+0x77 sys/arch/amd64/amd64/vmm_machdep.c:3667 #2 vmmioctl+0x2a1 sys/dev/vmm/vmm.c:242 #3 VOP_IOCTL+0x97 sys/kern/vfs_vops.c:264 #4 vn_ioctl+0xc0 sys/kern/vfs_vnops.c:525 #5 sys_ioctl+0x4a2 #6 syscall+0x5ae mi_syscall sys/sys/syscall_mi.h:183 [inline] #6 syscall+0x5ae sys/arch/amd64/amd64/trap.c:577 #7 Xsyscall+0x128 Process 92179 (syz-executor.3) thread 0xffff80002a23d558 (43385) exclusive rrwlock inode r = 0 (0xfffffd806fdc4b38) #0 witness_lock+0x447 #1 rw_enter+0x3c8 sys/kern/kern_rwlock.c:309 #2 rrw_enter+0x8c sys/kern/kern_rwlock.c:464 #3 VOP_LOCK+0x8b sys/kern/vfs_vops.c:518 #4 vn_lock+0x84 sys/kern/vfs_vnops.c:564 #5 vget+0x200 sys/kern/vfs_subr.c:676 #6 ufs_ihashget+0x121 sys/ufs/ufs/ufs_ihash.c:119 #7 ffs_vget+0x7c sys/ufs/ffs/ffs_vfsops.c:1201 #8 ufs_lookup+0x1323 sys/ufs/ufs/ufs_lookup.c:478 #9 VOP_LOOKUP+0x5c sys/kern/vfs_vops.c:85 #10 vfs_lookup+0x6e2 sys/kern/vfs_lookup.c:566 #11 namei+0x55a sys/kern/vfs_lookup.c:250 #12 dounlinkat+0x9d sys/kern/vfs_syscalls.c:1847 #13 syscall+0x533 mi_syscall sys/sys/syscall_mi.h:183 [inline] #13 syscall+0x533 sys/arch/amd64/amd64/trap.c:577 #14 Xsyscall+0x128 exclusive rrwlock inode r = 0 (0xfffffd80620d2a28) #0 witness_lock+0x447 #1 rw_enter+0x3c8 sys/kern/kern_rwlock.c:309 #2 rrw_enter+0x8c sys/kern/kern_rwlock.c:464 #3 VOP_LOCK+0x8b sys/kern/vfs_vops.c:518 #4 vn_lock+0x84 sys/kern/vfs_vnops.c:564 #5 vfs_lookup+0xd5 sys/kern/vfs_lookup.c:418 #6 namei+0x55a sys/kern/vfs_lookup.c:250 #7 dounlinkat+0x9d sys/kern/vfs_syscalls.c:1847 #8 syscall+0x533 mi_syscall sys/sys/syscall_mi.h:183 [inline] #8 syscall+0x533 sys/arch/amd64/amd64/trap.c:577 #9 Xsyscall+0x128 ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10225 6534K 7535K 166960K 20299 0 pcb 16 18K 20K 166960K 555 0 rtable 220 14K 15K 166960K 1571 0 pf 32 9K 10K 166960K 177 0 ifaddr 42 15K 16K 166960K 189 0 ifgroup 55 2K 2K 166960K 269 0 sysctl 3 0K 0K 166960K 3 0 counters 64 36K 36K 166960K 186 0 ioctlops 0 0K 4K 166960K 2209 0 iov 0 0K 40K 166960K 665 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1473 92K 93K 166960K 4866 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 9K 166960K 115 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 0K 166960K 951 0 dirhash 12 2K 2K 166960K 51 0 ACPI 1697 195K 286K 166960K 12548 0 file desc 17 61K 77K 166960K 8087 0 sigio 1 0K 0K 166960K 200 0 proc 70 91K 128K 166960K 1515 0 subproc 104 6K 6K 166960K 432 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 389 0 in_multi 88 6K 7K 166960K 450 0 ether_multi 1 0K 0K 166960K 10 0 mrt 1 0K 0K 166960K 4 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 241 1076K 1076K 166960K 241 0 exec 0 0K 1K 166960K 1333 0 pfkey data 0 0K 0K 166960K 10 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 455 257K 260K 166960K 81893 0 UVM aobj 131 4K 5K 166960K 135 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 313 0 NDP 12 0K 2K 166960K 139 0 temp 74 6772K 6900K 166960K 100021 0 kqueue 12 18K 26K 166960K 603 0 SYN cache 2 16K 16K 166960K 2 0 ddb{0}> show all pools Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle plcache 128 24 0 0 1 0 1 1 0 8 0 rtpcb 120 539 0 536 7 4 3 3 0 8 2 rtentry 112 532 0 432 5 1 4 4 0 8 0 unpcb 144 6484 0 6465 95 93 2 8 0 8 1 syncache 336 73 0 73 19 18 1 1 0 8 1 tcpqe 32 194 0 194 13 13 0 1 0 8 0 tcpcb 808 2715 0 2689 85 79 6 9 0 8 2 arp 120 130 0 113 1 0 1 1 0 8 0 inpcb 392 6560 0 6525 149 142 7 19 0 8 3 nd6 136 102 0 81 1 0 1 1 0 8 0 pkpcb 40 65 0 65 7 7 0 1 0 8 0 kcovpl 48 33 0 25 1 0 1 1 0 8 0 ppxss 1168 22 0 22 6 6 0 1 0 8 0 pffrag 232 29 0 27 4 3 1 1 0 482 0 pffrnode 88 29 0 27 4 3 1 1 0 8 0 pffrent 40 145 0 143 4 3 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 24 278 0 264 1 0 1 1 0 8 0 pfstkey 128 297 0 283 2 1 1 2 0 8 0 pfstate 376 297 0 283 6 4 2 5 0 8 0 pfrule 1344 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 1743 0 1320 45 15 30 31 0 8 0 art_table 32 1744 0 1320 4 0 4 4 0 8 0 art_node 16 517 0 426 1 0 1 1 0 8 0 sysvmsgpl 40 9 0 4 1 0 1 1 0 8 0 semapl 112 949 0 939 1 0 1 1 0 8 0 shmpl 112 132 0 4 4 0 4 4 0 8 0 dirhash 1024 43 0 26 3 0 3 3 0 8 0 dino2pl 256 11735 0 10251 94 0 94 94 0 8 0 ffsino 272 11735 0 10251 100 0 100 100 0 8 0 nchpl 144 22414 0 20759 64 0 64 64 0 8 0 uvmvnodes 80 5926 0 0 121 0 121 121 0 8 0 vnodes 216 5926 0 0 330 0 330 330 0 8 0 namei 1024 74908 0 74908 7 6 1 2 0 8 1 percpumem 16 107 0 61 1 0 1 1 0 8 0 vcpupl 2048 170 0 1 22 0 22 22 0 8 0 vmpool 696 225 0 56 19 3 16 16 0 8 0 kstatmem 264 146 0 122 2 0 2 2 0 8 0 scxspl 216 69938 0 69938 27 26 1 8 1 8 1 plimitpl 152 700 0 684 1 0 1 1 0 8 0 sigapl 424 8385 0 8316 10 2 8 9 0 8 0 futexpl 64 72737 0 72722 1 0 1 1 0 8 0 knotepl 120 893 0 0 17 1 16 16 0 8 0 kqueuepl 216 1511 0 1501 33 30 3 5 0 8 2 pipepl 320 944 0 916 18 15 3 8 0 8 0 fdescpl 496 8344 0 8314 5 0 5 5 0 8 0 filepl 152 46079 0 45816 126 112 14 19 0 8 3 lockfpl 104 1513 0 1511 2 1 1 2 0 8 0 lockfspl 48 551 0 549 1 0 1 1 0 8 0 sessionpl 144 49 0 32 1 0 1 1 0 8 0 pgrppl 48 145 0 128 1 0 1 1 0 8 0 ucredpl 104 6595 0 6573 1 0 1 1 0 8 0 zombiepl 144 8316 0 8316 3 2 1 1 0 8 1 processpl 1136 8385 0 8316 6 0 6 6 0 8 0 procpl 680 22988 0 22888 12 3 9 9 0 8 0 srpgc 96 33 0 33 12 11 1 1 0 8 1 sosppl 168 91 0 91 15 15 0 1 0 8 0 sockpl 584 13676 0 13621 183 175 8 18 0 8 3 mcl64k 65536 49 0 0 5 2 3 3 0 8 0 mcl16k 16384 17 0 0 3 0 3 3 0 8 0 mcl12k 12288 25 0 0 2 0 2 2 0 8 0 mcl9k 9216 17 0 0 2 0 2 2 0 8 0 mcl8k 8192 23 0 0 3 0 3 3 0 8 0 mcl4k 4096 26 0 0 3 0 3 3 0 8 0 mcl2k2 2112 8 0 0 1 0 1 1 0 8 0 mcl2k 2048 408 0 0 38 8 30 38 0 8 0 mtagpl 96 431 0 0 7 0 7 7 0 8 0 mbufpl 256 1305 0 0 61 0 61 61 0 8 0 bufpl 280 17235 0 10918 452 0 452 452 0 8 0 anonpl 24 933807 0 918760 179 71 108 122 0 186 0 amapchunkpl 152 257691 0 256675 76 34 42 48 0 158 0 amappl16 200 20727 0 20262 99 69 30 39 0 8 0 amappl15 192 28 0 27 1 0 1 1 0 8 0 amappl14 184 262 0 246 2 1 1 2 0 8 0 amappl13 176 29 0 28 1 0 1 1 0 8 0 amappl12 168 9399 0 9366 3 1 2 2 0 8 0 amappl11 160 57 0 43 1 0 1 1 0 8 0 amappl10 152 70 0 59 1 0 1 1 0 8 0 amappl9 144 236 0 235 1 0 1 1 0 8 0 amappl8 136 555 0 449 5 0 5 5 0 8 0 amappl7 128 253 0 226 2 0 2 2 0 8 0 amappl6 120 755 0 740 1 0 1 1 0 8 0 amappl5 112 255 0 244 1 0 1 1 0 8 0 amappl4 104 727 0 687 5 3 2 2 0 8 0 amappl3 96 50356 0 50245 4 1 3 3 0 8 0 amappl2 88 9262 0 9178 3 1 2 3 0 8 0 amappl1 80 39415 0 38854 26 14 12 23 0 8 0 amappl 88 80884 0 80597 10 3 7 7 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 72 134 0 4 3 0 3 3 0 8 0 uaddrrnd 24 8570 0 8371 2 0 2 2 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 8570 0 8371 2 0 2 2 0 8 0 vmmpekpl 168 63398 0 63301 5 0 5 5 0 8 0 vmmpepl 168 516639 0 513745 349 212 137 153 0 357 0 vmsppl 448 8569 0 8371 24 1 23 23 0 8 0 rwobjpl 56 135469 0 127731 122 10 112 113 0 8 0 pdppl 4096 17147 0 16911 847 609 238 238 0 8 2 pvpl 32 45071 0 0 366 2 364 364 0 265 0 pmappl 248 8569 0 8371 14 1 13 13 0 8 0 extentpl 40 56 0 38 1 0 1 1 0 8 0 phpool 112 1564 0 924 19 0 19 19 0 8 0 ddb{0}> machine ddbcpu 0 Invalid cpu 0 ddb{0}> trace done_flush() at done_flush+0x38 vm_run(ffff800030420980) at vm_run+0x169 vmmioctl(a00,c0205602,ffff800030420980,1,ffff80002b8a32a8) at vmmioctl+0x2a1 sys/dev/vmm/vmm.c:242 VOP_IOCTL(fffffd80744301b8,c0205602,ffff800030420980,1,fffffd807f7d7138,ffff80002b8a32a8) at VOP_IOCTL+0x97 sys/kern/vfs_vops.c:264 vn_ioctl(fffffd8067cc90a8,c0205602,ffff800030420980,ffff80002b8a32a8) at vn_ioctl+0xc0 sys/kern/vfs_vnops.c:525 sys_ioctl(ffff80002b8a32a8,ffff800030420b60,ffff800030420ab0) at sys_ioctl+0x4a2 syscall(ffff800030420b60) at syscall+0x5ae mi_syscall sys/sys/syscall_mi.h:183 [inline] syscall(ffff800030420b60) at syscall+0x5ae sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xb31affcd550, count: -8 ddb{0}> machine ddbcpu 1 Stopped at x86_ipi_db+0x1e: addq $0x8,%rsp ddb{1}> trace x86_ipi_db(ffff800029cebff0) at x86_ipi_db+0x1e 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+0x27 acpicpu_idle() at acpicpu_idle+0x312 sys/dev/acpi/acpicpu.c:1206 sched_idle(ffff800029cebff0) at sched_idle+0x41e sys/kern/kern_sched.c:183 end trace frame: 0x0, count: -5