*cpu1: uvm_fault(0xfffffd806c9c17c0, 0x340, 0, 1) -> e ddb{0}> trace proc_trampoline() at proc_trampoline+0xc7 end of kernel end trace frame: 0x7efe0994f090, count: -1 ddb{0}> show registers rdi 0 rsi 0 rbp 0xffff8000307c6a50 rbx 0 rdx 0 rcx 0xffff8000fffe8d28 rax 0x2a r8 0xffff8000307c6980 r9 0 r10 0x99721d9d93b3ac36 r11 0x3b992c994c9ebdbc r12 0 r13 0 r14 0 r15 0 rip 0xffffffff8196c4c7 proc_trampoline+0xc7 cs 0x8 rflags 0x246 rsp 0xffff8000307c69d0 ss 0x10 proc_trampoline+0xc7: movl $0,%gs:0x688 ddb{0}> show proc PROC (syz-executor) tid=42818 pid=54298 tcnt=1 stat=onproc flags process=0 proc=0 runpri=50, usrpri=50, slppri=17, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff8000fffe87f8,0xffff8000fffe8fd0 process=0xffff8000fffe79e0 user=0xffff8000307c1000, vmspace=0xfffffd806c9c1208 estcpu=36, cpticks=0, pctcpu=0.0, user=0, sys=0, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND *54298 42818 65756 0 7 0 syz-executor 73514 468633 73255 0 2 0 syz-executor 73514 451933 73255 0 3 0x4000080 fsleep syz-executor 73514 230374 73255 0 2 0x4000000 syz-executor 86512 11342 8431 0 2 0 syz-executor 86512 170597 8431 0 3 0x4000000 vm_terminate syz-executor 86512 157778 8431 0 7 0x4000000 syz-executor 73596 64091 94739 0 2 0 syz-executor 73596 493442 94739 0 3 0x4000080 fsleep syz-executor 72554 193371 70156 0 3 0x80 nanoslp syz-executor 72554 412800 70156 0 3 0x4000080 kqread syz-executor 72554 252032 70156 0 3 0x4000080 fsleep syz-executor 28449 386677 80063 0 3 0x3000 suspend syz-executor 28449 291322 80063 0 3 0x4081000 biowait syz-executor 54970 505125 0 0 3 0x14200 acct acct 94009 169823 66290 0 3 0x82 nanoslp syz-executor 80063 102806 66290 0 3 0x82 wait syz-executor 49921 481157 66290 0 3 0x82 nanoslp syz-executor 65756 109605 66290 0 3 0x82 nanoslp syz-executor 8431 203270 66290 0 3 0x82 nanoslp syz-executor 73255 118174 66290 0 3 0x82 nanoslp syz-executor 94739 293028 66290 0 3 0x82 nanoslp syz-executor 70156 219480 66290 0 3 0x82 nanoslp syz-executor 66290 180576 63928 0 3 0x82 kqread syz-executor 63928 148298 92559 0 3 0x10008a sigsusp ksh 92559 516318 8471 0 3 0x98 kqread sshd-session 8471 480440 15265 0 3 0x92 kqread sshd-session 23043 314209 1 0 3 0x100083 ttyopn getty 15265 357897 1 0 3 0x88 kqread sshd 20660 239825 41869 74 3 0x1100092 bpf pflogd 41869 487036 1 0 3 0x80 sbwait pflogd 13241 497586 50601 73 3 0x1100090 kqread syslogd 50601 355110 1 0 3 0x100082 sbwait syslogd 92567 110881 1 0 3 0x100080 kqread resolvd 41004 13207 9765 77 3 0x100092 kqread dhcpleased 6574 328583 9765 77 3 0x100092 kqread dhcpleased 9765 491819 1 0 3 0x80 kqread dhcpleased 63648 372271 0 0 3 0x14200 bored smr 72773 312741 0 0 2 0x14200 zerothread 21806 211754 0 0 3 0x14200 aiodoned aiodoned 25053 33277 0 0 3 0x14200 syncer update 60282 325459 0 0 3 0x14200 cleaner cleaner 46897 35848 0 0 3 0x14200 reaper reaper 35587 104049 0 0 3 0x14200 pgdaemon pagedaemon 86685 13640 0 0 3 0x14200 bored viomb 5217 398625 0 0 3 0x40014200 acpi0 acpi0 86452 68251 0 0 3 0x40014200 idle1 19929 395828 0 0 3 0x14200 bored softnet1 15108 424815 0 0 3 0x14200 bored softnet0 37314 142840 0 0 3 0x14200 bored systqmp 63044 447577 0 0 3 0x14200 bored systq 65808 205861 0 0 3 0x14200 tmoslp softclockmp 87976 274852 0 0 3 0x40014200 tmoslp softclock 97942 411082 0 0 3 0x40014200 idle0 1 429268 0 0 3 0x82 wait init 0 0 -1 0 3 0x10010200 scheduler swapper ddb{0}> show all locks CPU 0: exclusive mutex &sched_lock r = 0 (0xffffffff839aa818) #0 witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5f1 sys/kern/subr_witness.c:1160 #1 mtx_enter_try+0x1ad sys/kern/kern_lock.c:311 #2 mtx_enter+0x62 sys/kern/kern_lock.c:261 #3 sleep_finish+0x1d6 sys/kern/kern_synch.c:357 #4 refcnt_finalize+0xdb sys/kern/kern_synch.c:957 #5 vm_terminate+0x16d sys/dev/vmm/vmm.c:739 #6 vmmioctl+0x35b sys/dev/vmm/vmm.c:254 #7 VOP_IOCTL+0xac sys/kern/vfs_vops.c:264 #8 vn_ioctl+0xf8 sys/kern/vfs_vnops.c:531 #9 sys_ioctl+0x674 sys/kern/sys_generic.c:-1 #10 syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline] #10 syscall+0xbd4 sys/arch/amd64/amd64/trap.c:775 #11 Xsyscall+0x128 Process 86512 (syz-executor) thread 0xffff8000fffe87f8 (157778) Process 28449 (syz-executor) thread 0xffff80003c41cfc8 (291322) ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10216 11040K 11516K 166960K 12724 0 pcb 18 12K 12K 166960K 215 0 rtable 279 12K 12K 166960K 631 0 pf 39 18K 81K 166960K 233 0 ifaddr 46 8K 8K 166960K 116 0 ifgroup 59 2K 2K 166960K 197 0 sysctl 3 1K 9K 166960K 16 0 counters 74 37K 38K 166960K 238 0 ioctlops 0 0K 4K 166960K 1727 0 iov 0 0K 16K 166960K 45 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1456 92K 92K 166960K 2592 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 5K 166960K 11 0 VM map 2 1K 1K 166960K 2 0 sem 21 136K 136K 166960K 32 0 dirhash 12 2K 2K 166960K 27 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 18 65K 93K 166960K 1302 0 sigio 0 0K 0K 166960K 46 0 proc 72 115K 180K 166960K 730 0 subproc 72 4K 4K 166960K 101 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 151 0 in_multi 99 7K 7K 166960K 202 0 ether_multi 1 0K 0K 166960K 20 0 mrt 2 0K 0K 166960K 20 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 115 519K 519K 166960K 115 0 exec 0 0K 1K 166960K 738 0 fusefs mount 1 32K 32K 166960K 1 0 pfkey data 0 0K 0K 166960K 2 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 253 168K 186K 166960K 13877 0 UVM aobj 35 18K 18K 166960K 40 0 pinsyscall 43 86K 106K 166960K 2524 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 89 0 NDP 14 0K 2K 166960K 82 0 temp 70 8677K 8926K 166960K 65005 0 kqueue 14 22K 30K 166960K 284 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 26 0 0 1 0 1 1 0 8 0 rtpcb 120 149 0 146 1 0 1 1 0 8 0 rtentry 176 179 0 61 6 0 6 6 0 8 0 unpcb 144 661 0 640 6 5 1 3 0 8 0 syncache 336 7 0 7 3 2 1 1 0 8 1 tcpcb 736 364 0 359 7 6 1 7 0 8 0 arp 136 27 0 6 1 0 1 1 0 8 0 inpcb 328 1274 0 1263 14 10 4 7 0 8 2 nd6 152 40 0 9 2 0 2 2 0 8 0 pkpcb 40 5 0 5 3 2 1 1 0 8 1 kcovpl 48 11 0 3 1 0 1 1 0 8 0 ppxss 1192 66 0 64 5 4 1 1 0 8 0 pppxif 1504 7 0 7 4 3 1 1 0 8 1 pffrag 232 10 0 5 1 0 1 1 0 482 0 pffrnode 88 8 0 3 1 0 1 1 0 8 0 pffrent 40 61 0 56 1 0 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 pfrktable 1344 26 0 26 3 3 0 1 0 8 0 pfanchor 1288 6 0 6 3 3 0 1 0 8 0 pftag 88 7 0 6 3 2 1 1 0 8 0 pfstitem 24 80 0 27 1 0 1 1 0 8 0 pfstkey 128 82 0 29 2 0 2 2 0 8 0 pfstate 448 81 0 28 6 0 6 6 0 8 0 pfrule 1344 37 0 32 2 1 1 2 0 8 0 rttmr 136 3 0 3 3 3 0 1 0 8 0 art_heap8 4096 2 0 0 2 0 2 2 0 8 0 art_heap4 256 744 0 272 34 4 30 31 0 8 0 art_table 40 746 0 272 5 0 5 5 0 8 0 art_node 32 179 0 74 1 0 1 1 0 8 0 sysvmsgpl 40 14 0 9 1 0 1 1 0 8 0 semupl 112 1 0 1 1 1 0 1 0 8 0 semapl 112 28 0 9 1 0 1 1 0 8 0 shmpl 112 30 0 4 1 0 1 1 0 8 0 dirhash 1024 28 0 11 3 0 3 3 0 8 0 dino2pl 256 3829 0 2317 95 0 95 95 0 8 0 ffsino 296 3829 0 2317 117 0 117 117 0 8 0 nchpl 144 5560 0 3844 64 0 64 64 0 8 0 rtmask 32 19 0 19 4 3 1 1 0 8 1 vnodes 216 4618 0 0 257 0 257 257 0 8 0 namei 1024 19128 0 19128 2 1 1 2 0 8 1 percpumem 16 134 0 82 1 0 1 1 0 8 0 vcpupl 3968 6 0 0 1 0 1 1 0 8 0 vmpool 840 7 0 1 1 0 1 1 0 8 0 pfiaddrpl 120 6 0 6 3 3 0 1 0 8 0 kstatmem 264 120 0 90 5 2 3 3 0 8 0 scsiplug 72 5 0 5 4 4 0 1 0 8 0 scxspl 216 31661 0 31660 10 6 4 5 1 8 3 plimitpl 152 307 0 289 1 0 1 1 0 8 0 sigapl 424 1610 0 1561 7 1 6 7 0 8 0 knotepl 120 543 0 0 17 0 17 17 0 8 0 kqueuepl 224 526 0 516 8 6 2 5 0 8 1 pipepl 344 242 0 215 6 3 3 6 0 8 0 fdescpl 528 1592 0 1560 3 0 3 3 0 8 0 filepl 160 9389 0 9163 20 8 12 15 0 8 1 lockfpl 104 596 0 594 2 1 1 2 0 8 0 lockfspl 48 247 0 245 1 0 1 1 0 8 0 sessionpl 144 29 0 20 1 0 1 1 0 8 0 pgrppl 48 52 0 35 1 0 1 1 0 8 0 ucredpl 104 1686 0 1671 1 0 1 1 0 8 0 zombiepl 144 1714 0 1711 2 1 1 1 0 8 0 processpl 1232 1610 0 1561 5 1 4 5 0 8 0 procpl 664 3579 0 3522 8 2 6 6 0 8 0 sosppl 176 14 0 14 4 3 1 1 0 8 1 sockpl 752 2131 0 2095 24 17 7 11 0 8 2 mcl64k 65536 4 0 0 1 0 1 1 0 8 0 mcl16k 16384 1 0 0 1 0 1 1 0 8 0 mcl12k 12288 1 0 0 1 0 1 1 0 8 0 mcl9k 9216 2 0 0 1 0 1 1 0 8 0 mcl8k 8192 3 0 0 1 0 1 1 0 8 0 mcl4k 4096 119 0 0 15 0 15 15 0 8 0 mcl2k2 2112 2 0 0 1 0 1 1 0 8 0 mcl2k 2048 36 0 0 5 0 5 5 0 8 0 mtagpl 96 22 0 0 1 0 1 1 0 8 0 mbufpl 256 1815 0 0 114 0 114 114 0 8 0 bufpl 280 12333 0 6197 439 0 439 439 0 8 0 anonpl 32 11584 0 0 95 1 94 94 0 246 0 amapchunkpl 152 44844 0 44315 66 31 35 36 0 158 13 amappl16 200 5449 0 5174 59 31 28 28 0 8 10 amappl15 192 3 0 3 1 1 0 1 0 8 0 amappl14 184 8 0 8 1 1 0 1 0 8 0 amappl13 176 481 0 480 1 0 1 1 0 8 0 amappl12 168 1987 0 1944 3 0 3 3 0 8 0 amappl11 160 19 0 19 1 1 0 1 0 8 0 amappl10 152 50 0 36 1 0 1 1 0 8 0 amappl9 144 247 0 247 1 1 0 1 0 8 0 amappl8 136 28 0 26 1 0 1 1 0 8 0 amappl7 128 88 0 87 1 0 1 1 0 8 0 amappl6 120 318 0 305 1 0 1 1 0 8 0 amappl5 112 82 0 71 1 0 1 1 0 8 0 amappl4 104 455 0 424 1 0 1 1 0 8 0 amappl3 96 7929 0 7832 4 1 3 3 0 8 0 amappl2 88 1721 0 1644 2 0 2 2 0 8 0 amappl1 80 15077 0 14486 15 1 14 15 0 8 0 amappl 88 12908 0 12733 5 0 5 5 0 92 0 uvmvnodes 80 132 0 0 3 0 3 3 0 8 0 dma65536 65536 1 0 1 1 1 0 1 0 8 0 dma8192 8192 1 0 1 1 1 0 1 0 8 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 7 0 7 2 2 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 39 0 5 1 0 1 1 0 8 0 uaddrrnd 24 1592 0 1560 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 1592 0 1560 1 0 1 1 0 8 0 vmmpekpl 168 14305 0 14263 3 0 3 3 0 8 0 vmmpepl 168 106737 0 104538 133 28 105 105 0 357 3 vmsppl 488 1591 0 1560 6 1 5 5 0 8 0 rwobjpl 80 30406 0 29072 35 2 33 33 0 8 2 pdppl 4096 3206 0 3128 135 56 79 88 0 8 1 pvpl 32 20047 0 0 161 0 161 161 0 265 0 pmappl 256 1598 0 1561 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 432 0 73 11 0 11 11 0 8 0 ddb{0}> machine ddbcpu 0 Invalid cpu 0 ddb{0}> trace proc_trampoline() at proc_trampoline+0xc7 end of kernel end trace frame: 0x7efe0994f090, count: -1 ddb{0}> machine ddbcpu 1 Stopped at x86_ipi_db+0x27: addq $0x8,%rsp x86_ipi_db(ffff8000299ddff0) at x86_ipi_db+0x27 sys/arch/amd64/amd64/db_interface.c:394 x86_ipi_handler() at x86_ipi_handler+0xd9 sys/arch/amd64/amd64/ipi.c:106 Xresume_lapic_ipi() at Xresume_lapic_ipi+0x27 x86_bus_space_io_read_1(3f8,5) at x86_bus_space_io_read_1+0x37 sys/arch/amd64/amd64/bus_space.c:670 comcnputc(800,20) at comcnputc+0x250 comcn_read_reg sys/dev/ic/com.c:1655 [inline] comcnputc(800,20) at comcnputc+0x250 sys/dev/ic/com.c:1269 cnputc(20) at cnputc+0x67 sys/dev/cons.c:218 db_putchar(65) at db_putchar+0x126 db_force_whitespace sys/ddb/db_output.c:102 [inline] db_putchar(65) at db_putchar+0x126 sys/ddb/db_output.c:153 kprintf() at kprintf+0x29a5 sys/kern/subr_prf.c:-1 db_printf(ffffffff8334afeb) at db_printf+0x9b sys/kern/subr_prf.c:-1 fault(ffffffff83408751) at fault+0xa7 sys/arch/amd64/amd64/trap.c:161 kpageflttrap(ffff80003c422d50,340) at kpageflttrap+0x37d sys/arch/amd64/amd64/trap.c:296 kerntrap(ffff80003c422d50) at kerntrap+0x19c sys/arch/amd64/amd64/trap.c:520 alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b vm_terminate(ffff80003c4230a0) at vm_terminate+0xb0 sys/dev/vmm/vmm.c:728 end trace frame: 0xffff80003c422ed0, count: 0 ddb{1}> trace x86_ipi_db(ffff8000299ddff0) at x86_ipi_db+0x27 sys/arch/amd64/amd64/db_interface.c:394 x86_ipi_handler() at x86_ipi_handler+0xd9 sys/arch/amd64/amd64/ipi.c:106 Xresume_lapic_ipi() at Xresume_lapic_ipi+0x27 x86_bus_space_io_read_1(3f8,5) at x86_bus_space_io_read_1+0x37 sys/arch/amd64/amd64/bus_space.c:670 comcnputc(800,20) at comcnputc+0x250 comcn_read_reg sys/dev/ic/com.c:1655 [inline] comcnputc(800,20) at comcnputc+0x250 sys/dev/ic/com.c:1269 cnputc(20) at cnputc+0x67 sys/dev/cons.c:218 db_putchar(65) at db_putchar+0x126 db_force_whitespace sys/ddb/db_output.c:102 [inline] db_putchar(65) at db_putchar+0x126 sys/ddb/db_output.c:153 kprintf() at kprintf+0x29a5 sys/kern/subr_prf.c:-1 db_printf(ffffffff8334afeb) at db_printf+0x9b sys/kern/subr_prf.c:-1 fault(ffffffff83408751) at fault+0xa7 sys/arch/amd64/amd64/trap.c:161 kpageflttrap(ffff80003c422d50,340) at kpageflttrap+0x37d sys/arch/amd64/amd64/trap.c:296 kerntrap(ffff80003c422d50) at kerntrap+0x19c sys/arch/amd64/amd64/trap.c:520 alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b vm_terminate(ffff80003c4230a0) at vm_terminate+0xb0 sys/dev/vmm/vmm.c:728 vmmioctl(a00,80045604,ffff80003c4230a0,9,ffff8000fffe87f8) at vmmioctl+0x35b sys/dev/vmm/vmm.c:254 VOP_IOCTL(fffffd806e9fdcb0,80045604,ffff80003c4230a0,9,fffffd80097fd618,ffff8000fffe87f8) at VOP_IOCTL+0xac sys/kern/vfs_vops.c:264 vn_ioctl(fffffd807ba849f0,80045604,ffff80003c4230a0,ffff8000fffe87f8) at vn_ioctl+0xf8 sys/kern/vfs_vnops.c:531 sys_ioctl(ffff8000fffe87f8,ffff80003c423280,ffff80003c4231d0) at sys_ioctl+0x674 sys/kern/sys_generic.c:-1 syscall(ffff80003c423280) at syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c423280) at syscall+0xbd4 sys/arch/amd64/amd64/trap.c:775 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x60606b92ea0, count: -20