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(ffff8000294f5870) at vm_run+0x304 sys/arch/amd64/amd64/vmm.c:4293 vmmioctl(a00,c0205602,ffff8000294f5870,1,ffff8000fffea7f0) at vmmioctl+0x8f sys/arch/amd64/amd64/vmm.c:492 VOP_IOCTL(fffffd806e0ed4b0,c0205602,ffff8000294f5870,1,fffffd807f7d75a0,ffff8000fffea7f0) at VOP_IOCTL+0x96 sys/kern/vfs_vops.c:264 vn_ioctl(fffffd806fc82000,c0205602,ffff8000294f5870,ffff8000fffea7f0) at vn_ioctl+0xba sys/kern/vfs_vnops.c:531 sys_ioctl(ffff8000fffea7f0,ffff8000294f5988,ffff8000294f59d0) at sys_ioctl+0x4a2 syscall(ffff8000294f5a50) at syscall+0x5a9 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff8000294f5a50) at syscall+0x5a9 sys/arch/amd64/amd64/trap.c:587 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x3d585989fd0, count: -8 ddb{0}> show registers rdi 0x6c14 __ALIGN_SIZE+0x5c14 rsi 0xffff800021268e38 rbp 0xffff8000294f55e0 rbx 0x756e6547 rdx 0x49656e69 rcx 0x6c65746e rax 0xfffffffffffffffc r8 0 r9 0x10000 __ALIGN_SIZE+0xf000 r10 0x28b38bdb2dc626d2 r11 0x82a7b13ebf220e26 r12 0xffffffff827b3ee0 dt_prov_static r13 0x246 r14 0xffff800021268800 r15 0xffff8000294f5870 rip 0xffffffff813a8740 done_flush+0x38 cs 0x8 rflags 0x10046 __ALIGN_SIZE+0xf046 rsp 0xffff8000294f5436 ss 0x10 done_flush+0x38: movl %eax,%dr6 ddb{0}> show proc PROC (syz-executor.1) pid=429890 stat=onproc flags process=0 proc=4000000 pri=32, usrpri=82, nice=20 forw=0xffffffffffffffff, list=0xffff8000fffeb7b0,0xffffffff828df2e0 process=0xffff8000fffed508 user=0xffff8000294f0000, vmspace=0xfffffd807a5655d0 estcpu=36, cpticks=0, pctcpu=0.0 user=0, sys=0, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 89774 37468 87518 0 2 0 syz-executor.1 *89774 429890 87518 0 7 0x4000000 syz-executor.1 35431 491262 85759 0 3 0x82 nanoslp syz-executor.0 87518 53872 85759 0 3 0x82 nanoslp syz-executor.1 77190 116845 1 0 3 0x100083 ttyin getty 47228 13421 0 0 3 0x14200 bored sosplice 61007 368100 0 0 3 0x14280 nfsidl nfsio 97917 281415 0 0 3 0x14280 nfsidl nfsio 16488 332252 0 0 3 0x14280 nfsidl nfsio 68114 431280 0 0 3 0x14280 nfsidl nfsio 66970 308827 0 0 3 0x14280 nfsidl nfsio 55660 467833 0 0 3 0x14280 nfsidl nfsio 66627 176722 0 0 3 0x14280 nfsidl nfsio 60739 163599 0 0 3 0x14280 nfsidl nfsio 13888 442766 0 0 3 0x14280 nfsidl nfsio 77286 44729 0 0 3 0x14280 nfsidl nfsio 34111 464392 0 0 3 0x14280 nfsidl nfsio 97128 166614 0 0 3 0x14280 nfsidl nfsio 96176 485536 0 0 3 0x14280 nfsidl nfsio 14473 426579 0 0 3 0x14280 nfsidl nfsio 51892 241870 0 0 3 0x14280 nfsidl nfsio 33619 133629 0 0 3 0x14280 nfsidl nfsio 84331 202343 0 0 3 0x14280 nfsidl nfsio 18816 438621 0 0 3 0x14280 nfsidl nfsio 71261 398875 0 0 3 0x14280 nfsidl nfsio 73776 206684 0 0 3 0x14280 nfsidl nfsio 85759 87714 17468 0 3 0x82 thrsleep syz-fuzzer 85759 8209 17468 0 3 0x4000082 thrsleep syz-fuzzer 85759 423549 17468 0 3 0x4000082 thrsleep syz-fuzzer 85759 268887 17468 0 3 0x4000082 thrsleep syz-fuzzer 85759 356543 17468 0 3 0x4000082 thrsleep syz-fuzzer 85759 517620 17468 0 3 0x4000082 thrsleep syz-fuzzer 85759 159224 17468 0 3 0x4000082 thrsleep syz-fuzzer 85759 141174 17468 0 3 0x4000082 kqread syz-fuzzer 17468 433729 89029 0 3 0x10008a sigsusp ksh 89029 119950 73688 0 3 0x9a kqread sshd 73688 17975 1 0 3 0x88 kqread sshd 71834 317460 45350 74 3 0x100092 bpf pflogd 45350 25979 1 0 3 0x80 netio pflogd 94030 433888 31456 73 3 0x100090 kqread syslogd 31456 31392 1 0 3 0x100082 netio syslogd 60690 170587 1 0 3 0x100080 kqread resolvd 12883 404059 0 0 3 0x14200 bored smr 3515 326362 0 0 2 0x14200 zerothread 39310 298926 0 0 3 0x14200 aiodoned aiodoned 74865 393876 0 0 3 0x14200 syncer update 83569 16806 0 0 3 0x14200 cleaner cleaner 25981 98411 0 0 3 0x14200 reaper reaper 33707 452471 0 0 3 0x14200 pgdaemon pagedaemon 97550 209151 0 0 3 0x14200 bored viomb 10304 430472 0 0 3 0x40014200 acpi0 acpi0 48192 433685 0 0 7 0x40014200 idle1 91060 176496 0 0 3 0x14200 bored softnet 74203 282103 0 0 3 0x14200 bored systqmp 1682 326754 0 0 3 0x14200 bored systq 80716 275779 0 0 3 0x40014200 bored softclock 67247 312488 0 0 3 0x40014200 idle0 1 454974 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks Process 89774 (syz-executor.1) thread 0xffff8000fffea7f0 (429890) exclusive rwlock vcpu r = 0 (0xffff800021268bb0) #0 witness_lock+0x4b0 stacktrace_save sys/sys/stacktrace.h:36 [inline] #0 witness_lock+0x4b0 sys/kern/subr_witness.c:1182 #1 vm_run+0x2e0 sys/arch/amd64/amd64/vmm.c:4260 #2 vmmioctl+0x8f sys/arch/amd64/amd64/vmm.c:492 #3 VOP_IOCTL+0x96 sys/kern/vfs_vops.c:264 #4 vn_ioctl+0xba sys/kern/vfs_vnops.c:531 #5 sys_ioctl+0x4a2 #6 syscall+0x5a9 mi_syscall sys/sys/syscall_mi.h:102 [inline] #6 syscall+0x5a9 sys/arch/amd64/amd64/trap.c:587 #7 Xsyscall+0x128 ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10133 6461K 7264K 78643K 16211 0 pcb 13 8K 9K 78643K 9609 0 rtable 157 25K 26K 78643K 4213 0 ifaddr 61 22K 26K 78643K 1670 0 sysctl 3 1K 1K 78643K 15 0 counters 44 34K 34K 78643K 626 0 ioctlops 0 0K 4K 78643K 3577 0 iov 0 0K 24K 78643K 1109 0 mount 1 1K 1K 78643K 1 0 log 0 0K 0K 78643K 5 0 vnodes 1258 79K 80K 78643K 5856 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 5K 78643K 117 0 VM map 2 1K 1K 78643K 2 0 sem 12 0K 1K 78643K 1792 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1697 195K 286K 78643K 12598 0 file desc 5 13K 25K 78643K 15028 0 sigio 0 0K 0K 78643K 62 0 proc 64 63K 111K 78643K 2933 0 subproc 66 4K 4K 78643K 2254 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 0 0K 0K 78643K 1606 0 in_multi 30 2K 2K 78643K 1747 0 ether_multi 1 0K 0K 78643K 246 0 mrt 2 0K 0K 78643K 92 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 91 413K 413K 78643K 91 0 exec 0 0K 2K 78643K 2929 0 pfkey data 0 0K 0K 78643K 14 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 599 1723K 1723K 78643K 176762 0 UVM aobj 131 9K 9K 78643K 155 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 1539 0 NDP 7 0K 0K 78643K 496 0 temp 101 4228K 8324K 78643K 380459 0 kqueue 8 14K 32K 78643K 1231 0 SYN cache 2 8K 16K 78643K 3 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 120 907 0 906 1 0 1 1 0 8 0 rtentry 112 1232 0 1199 2 0 2 2 0 8 0 unpcb 128 6376 0 6367 4 3 1 2 0 8 0 syncache 296 85 0 85 26 26 0 1 0 8 0 tcpqe 32 12 0 12 9 9 0 1 0 8 0 tcpcb 736 4119 0 4111 40 39 1 3 0 8 0 arp 120 187 0 181 1 0 1 1 0 8 0 inpcb 304 19099 0 19095 43 41 2 2 0 8 1 rttmr 72 20 0 20 9 9 0 1 0 8 0 nd6 48 294 0 288 2 1 1 1 0 8 0 pkpcb 40 82 0 82 27 27 0 1 0 8 0 kcovpl 48 68 0 66 1 0 1 1 0 8 0 ppxss 1248 54 0 54 29 29 0 1 0 8 0 pfstscr 40 12 0 12 5 5 0 1 0 8 0 pffrag 232 91 0 88 14 13 1 1 0 482 0 pffrnode 88 90 0 87 14 13 1 1 0 8 0 pffrent 40 880 0 877 15 14 1 1 0 8 0 pfosfp 40 1434 0 1010 5 0 5 5 0 8 0 pfosfpen 112 1434 0 717 21 0 21 21 0 8 0 pfrktable 1344 311 0 286 14 11 3 3 0 8 0 pftag 88 17 0 8 1 0 1 1 0 8 0 pfqueue 264 16 0 10 3 2 1 1 0 8 0 pfstitem 24 29 0 27 1 0 1 1 0 8 0 pfstkey 112 43 0 41 1 0 1 1 0 8 0 pfstate 320 33 0 31 2 1 1 2 0 8 0 pfrule 1360 701 0 550 19 6 13 13 0 8 0 art_heap8 4096 8 0 7 8 7 1 3 0 8 0 art_heap4 256 5756 0 5601 56 46 10 14 0 8 0 art_table 32 5764 0 5608 2 0 2 2 0 8 0 art_node 16 1221 0 1194 1 0 1 1 0 8 0 sysvmsgpl 40 30 0 9 1 0 1 1 0 8 0 semupl 112 1 0 1 1 1 0 1 0 8 0 semapl 112 1788 0 1778 1 0 1 1 0 8 0 shmpl 112 152 0 24 4 0 4 4 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 19962 0 18519 92 1 91 91 0 8 0 ffsino 272 19962 0 18519 97 0 97 97 0 8 0 nchpl 144 40172 0 39715 61 43 18 61 0 8 0 uvmvnodes 72 6017 0 0 110 0 110 110 0 8 0 vnodes 224 6017 0 0 354 0 354 354 0 8 0 namei 1024 126999 0 126999 14 13 1 1 0 8 1 percpumem 16 325 0 291 1 0 1 1 0 8 0 vcpupl 2048 167 0 0 21 0 21 21 0 8 0 vmpool 560 215 0 48 14 2 12 12 0 8 0 pfiaddrpl 120 120 0 74 3 1 2 2 0 8 0 scsiplug 72 14 0 14 12 11 1 1 0 8 1 scxspl 216 130275 0 130275 43 42 1 7 0 8 1 plimitpl 152 1217 0 1209 1 0 1 1 0 8 0 sigapl 424 15109 0 15059 7 0 7 7 0 8 0 futexpl 64 236202 0 236202 12 11 1 1 0 8 1 knotepl 112 251 0 0 3 0 3 3 0 8 0 kqueuepl 216 4098 0 4085 41 39 2 2 0 8 1 pipepl 336 2165 0 2155 11 9 2 2 0 8 0 fdescpl 496 15066 0 15051 3 0 3 3 0 8 0 filepl 152 87271 0 87141 28 22 6 8 0 8 1 lockfpl 104 3052 0 3051 1 0 1 1 0 8 0 lockfspl 48 915 0 914 1 0 1 1 0 8 0 sessionpl 144 85 0 75 1 0 1 1 0 8 0 pgrppl 48 139 0 129 1 0 1 1 0 8 0 ucredpl 96 10925 0 10916 1 0 1 1 0 8 0 zombiepl 144 15059 0 15058 6 5 1 1 0 8 0 processpl 1072 15109 0 15058 4 0 4 4 0 8 0 procpl 672 33148 0 33089 6 0 6 6 0 8 0 srpgc 96 35 0 35 17 17 0 1 0 8 0 sosppl 168 124 0 124 39 39 0 1 0 8 0 sockpl 480 26897 0 26883 65 61 4 6 0 8 1 mcl64k 65536 19 0 0 3 0 3 3 0 8 0 mcl16k 16384 3 0 0 1 0 1 1 0 8 0 mcl12k 12288 17 0 0 2 0 2 2 0 8 0 mcl9k 9216 17 0 0 2 0 2 2 0 8 0 mcl8k 8192 16 0 0 2 0 2 2 0 8 0 mcl4k 4096 18 0 0 3 0 3 3 0 8 0 mcl2k2 2112 3 0 0 1 0 1 1 0 8 0 mcl2k 2048 391 0 0 34 1 33 33 0 8 0 mtagpl 96 29 0 0 1 0 1 1 0 8 0 mbufpl 256 1449 0 0 39 0 39 39 0 8 0 bufpl 280 38077 0 31748 453 0 453 453 0 8 0 anonpl 24 4198046 0 4182229 438 326 112 134 0 186 0 amapchunkpl 152 439387 0 438764 281 254 27 40 0 158 0 amappl16 200 40188 0 39476 378 340 38 50 0 8 0 amappl15 192 2112 0 2107 1 0 1 1 0 8 0 amappl14 184 2046 0 2044 1 0 1 1 0 8 0 amappl13 176 2264 0 2263 1 0 1 1 0 8 0 amappl12 168 852 0 850 1 0 1 1 0 8 0 amappl11 160 1474 0 1462 1 0 1 1 0 8 0 amappl10 152 1631 0 1627 1 0 1 1 0 8 0 amappl9 144 3068 0 3068 7 7 0 1 0 8 0 amappl8 136 3997 0 3909 8 4 4 4 0 8 0 amappl7 128 2590 0 2580 1 0 1 1 0 8 0 amappl6 120 3153 0 3142 1 0 1 1 0 8 0 amappl5 112 13917 0 13896 1 0 1 1 0 8 0 amappl4 104 4969 0 4940 1 0 1 1 0 8 0 amappl3 96 2272 0 2254 1 0 1 1 0 8 0 amappl2 88 17902 0 17838 4 2 2 2 0 8 0 amappl1 80 248530 0 248132 13 3 10 13 0 8 0 amappl 88 174911 0 174617 7 0 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 64 154 0 24 3 0 3 3 0 8 0 uaddrrnd 24 15281 0 15099 2 0 2 2 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 15281 0 15099 2 0 2 2 0 8 0 vmmpekpl 168 73312 0 73257 4 1 3 3 0 8 0 vmmpepl 168 1367699 0 1365480 879 747 132 132 0 357 28 vmsppl 368 15280 0 15099 17 0 17 17 0 8 0 rwobjpl 56 305339 0 303720 105 81 24 27 0 8 0 pdppl 4096 30570 0 30365 281 73 208 208 0 8 3 pvpl 32 7368229 0 7349213 675 498 177 210 0 265 0 pmappl 224 15280 0 15099 12 1 11 11 0 8 0 extentpl 40 58 0 40 1 0 1 1 0 8 0 phpool 112 744 0 197 16 0 16 16 0 8 0 ddb{0}> machine ddbcpu 0 Invalid cpu 0 ddb{0}> trace done_flush() at done_flush+0x38 vm_run(ffff8000294f5870) at vm_run+0x304 sys/arch/amd64/amd64/vmm.c:4293 vmmioctl(a00,c0205602,ffff8000294f5870,1,ffff8000fffea7f0) at vmmioctl+0x8f sys/arch/amd64/amd64/vmm.c:492 VOP_IOCTL(fffffd806e0ed4b0,c0205602,ffff8000294f5870,1,fffffd807f7d75a0,ffff8000fffea7f0) at VOP_IOCTL+0x96 sys/kern/vfs_vops.c:264 vn_ioctl(fffffd806fc82000,c0205602,ffff8000294f5870,ffff8000fffea7f0) at vn_ioctl+0xba sys/kern/vfs_vnops.c:531 sys_ioctl(ffff8000fffea7f0,ffff8000294f5988,ffff8000294f59d0) at sys_ioctl+0x4a2 syscall(ffff8000294f5a50) at syscall+0x5a9 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff8000294f5a50) at syscall+0x5a9 sys/arch/amd64/amd64/trap.c:587 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x3d585989fd0, count: -8 ddb{0}> machine ddbcpu 1 Stopped at x86_ipi_db+0x1a: addq $0x8,%rsp ddb{1}> trace x86_ipi_db(ffff800020d38ff0) 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+0x2eb sys/dev/acpi/acpicpu.c:1206 sched_idle(ffff800020d38ff0) at sched_idle+0x417 sys/kern/kern_sched.c:178 end trace frame: 0x0, count: -5