*cpu1: uvm_fault(0xfffffd8060706a60, 0x8, 0, 1) -> e ddb{0}> trace proc_trampoline() at proc_trampoline+0xc7 end of kernel end trace frame: 0x70c1ff626990, count: -1 ddb{0}> show registers rdi 0 rsi 0 rbp 0xffff80002a1041c0 rbx 0 rdx 0 rcx 0xffff80002a16d478 rax 0x2a r8 0xffff80002a1040f0 r9 0x1 r10 0xb3ed5b195e6f7016 r11 0x9913f98d719d3c9b r12 0 r13 0 r14 0 r15 0 rip 0xffffffff81cda4c7 proc_trampoline+0xc7 cs 0x8 rflags 0x246 rsp 0xffff80002a104140 ss 0 proc_trampoline+0xc7: movl $0,%gs:0x680 ddb{0}> show proc PROC (syz-executor) tid=57368 pid=39334 tcnt=2 stat=onproc flags process=0 proc=0 runpri=50, usrpri=86, slppri=17, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff80002a0556e8,0xffff80002a16cf78 process=0xffff800029fea448 user=0xffff80002a0ff000, vmspace=0xfffffd80607061c8 estcpu=36, cpticks=1, pctcpu=0.0, user=0, sys=1, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 22207 379739 76675 0 2 0 syz-executor *39334 57368 95886 0 7 0 syz-executor 39334 179195 95886 0 3 0x4000080 fsleep syz-executor 52757 496361 67588 0 3 0x80 nanoslp syz-executor 52757 341002 67588 0 2 0x4000000 syz-executor 52757 458032 67588 0 3 0x4000080 fsleep syz-executor 97217 121391 34921 0 2 0 syz-executor 97217 126286 34921 0 7 0x4000001 syz-executor 97217 57899 34921 0 3 0x4000080 fsleep syz-executor 83367 388933 10092 0 2 0 syz-executor 83367 409707 10092 0 3 0x4000080 fsleep syz-executor 96122 357558 4032 0 2 0 syz-executor 96122 368732 4032 0 3 0x4000080 fsleep syz-executor 68224 123038 0 0 3 0x14200 bored sosplice 33676 341638 1 0 3 0x100083 ttyin getty 30244 140015 0 0 3 0x14200 acct acct 4032 461328 28098 0 3 0x82 nanoslp syz-executor 10092 124443 28098 0 3 0x82 nanoslp syz-executor 37929 247689 28098 0 3 0x2 biowait syz-executor 76675 85916 28098 0 3 0x82 nanoslp syz-executor 61405 454301 28098 0 3 0x2 biowait syz-executor 95886 85524 28098 0 3 0x82 nanoslp syz-executor 34921 129727 28098 0 3 0x82 nanoslp syz-executor 67588 94454 28098 0 3 0x82 nanoslp syz-executor 28098 61496 72615 0 2 0x2 syz-executor 72615 310432 6747 0 3 0x10008a sigsusp ksh 6747 232944 27680 0 3 0x98 kqread sshd-session 27680 211834 48908 0 3 0x92 kqread sshd-session 48908 31530 1 0 3 0x88 kqread sshd 50886 223359 66818 74 3 0x1100092 bpf pflogd 66818 101138 1 0 3 0x80 sbwait pflogd 10175 279071 42008 73 3 0x1100090 kqread syslogd 42008 326335 1 0 3 0x100082 sbwait syslogd 50651 518887 1 0 3 0x100080 kqread resolvd 88488 436437 44446 77 3 0x100092 kqread dhcpleased 96031 254110 44446 77 3 0x100092 kqread dhcpleased 44446 470655 1 0 3 0x80 kqread dhcpleased 60191 457118 0 0 3 0x14200 bored smr 55215 294184 0 0 2 0x14200 zerothread 86953 317417 0 0 3 0x14200 aiodoned aiodoned 20437 135895 0 0 3 0x14200 syncer update 14621 313061 0 0 3 0x14200 cleaner cleaner 76163 76784 0 0 3 0x14200 reaper reaper 58307 402241 0 0 3 0x14200 pgdaemon pagedaemon 42074 296399 0 0 3 0x14200 bored viomb 33096 65984 0 0 3 0x40014200 acpi0 acpi0 87991 213284 0 0 3 0x40014200 idle1 76091 447817 0 0 3 0x14200 bored softnet3 52857 231654 0 0 3 0x14200 bored softnet2 65584 269484 0 0 3 0x14200 bored softnet1 90507 390984 0 0 3 0x14200 bored softnet0 40513 438646 0 0 3 0x14200 bored systqmp 71979 444884 0 0 3 0x14200 bored systq 64614 97766 0 0 3 0x14200 tmoslp softclockmp 97976 450964 0 0 3 0x40014200 tmoslp softclock 39310 497148 0 0 3 0x40014200 idle0 1 407826 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks CPU 0: exclusive mutex &pmap->pm_mtx r = 0 (0xfffffd8060695ca8) #0 witness_lock+0x5b8 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5b8 sys/kern/subr_witness.c:1151 #1 mtx_enter_try+0x178 #2 mtx_enter+0x60 sys/kern/kern_lock.c:239 #3 pmap_extract+0xac sys/arch/amd64/amd64/pmap.c:1565 #4 uvm_fault_upper_lookup+0x189 sys/uvm/uvm_fault.c:860 #5 uvm_fault+0x169 sys/uvm/uvm_fault.c:605 #6 upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:188 #7 usertrap+0x2d8 sys/arch/amd64/amd64/trap.c:436 #8 recall_trap+0x8 Process 39334 (syz-executor) thread 0xffff80002a16d478 (57368) Process 97217 (syz-executor) thread 0xffff80002a16d700 (126286) Process 37929 (syz-executor) thread 0xffff80002a054cc8 (247689) Process 61405 (syz-executor) thread 0xffff80002a0547b8 (454301) ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10197 10191K 10771K 166960K 12725 0 pcb 17 12K 12K 166960K 107 0 rtable 234 15K 16K 166960K 495 0 pf 36 17K 81K 166960K 86 0 ifaddr 41 7K 7K 166960K 66 0 ifgroup 59 2K 2K 166960K 103 0 sysctl 3 0K 0K 166960K 3 0 counters 66 36K 37K 166960K 94 0 ioctlops 0 0K 4K 166960K 1565 0 iov 0 0K 24K 166960K 35 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1357 85K 86K 166960K 2073 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 5K 166960K 6 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 0K 166960K 14 0 dirhash 12 2K 2K 166960K 12 0 ACPI 1697 195K 286K 166960K 12548 0 file desc 16 57K 89K 166960K 3264 0 sigio 0 0K 0K 166960K 7 0 proc 71 91K 128K 166960K 626 0 subproc 104 6K 6K 166960K 138 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 96 0 in_multi 85 6K 7K 166960K 132 0 ether_multi 1 0K 0K 166960K 2 0 mrt 0 0K 0K 166960K 1 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 55 254K 254K 166960K 55 0 exec 0 0K 1K 166960K 451 0 pfkey data 0 0K 0K 166960K 3 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 233 109K 110K 166960K 28375 0 UVM aobj 7 2K 2K 166960K 9 0 pinsyscall 41 82K 102K 166960K 4366 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 10 0 NDP 13 0K 2K 166960K 45 0 temp 46 6816K 7450K 166960K 52792 0 kqueue 13 20K 24K 166960K 110 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 120 104 0 101 1 0 1 1 0 8 0 rtentry 112 142 0 38 4 0 4 4 0 8 0 unpcb 144 344 0 326 1 0 1 1 0 8 0 syncache 336 3 0 3 1 1 0 1 0 8 0 tcpcb 808 136 0 132 1 0 1 1 0 8 0 arp 120 22 0 6 1 0 1 1 0 8 0 inpcb 336 513 0 505 1 0 1 1 0 8 0 nd6 136 35 0 9 2 0 2 2 0 8 0 pkpcb 40 9 0 9 2 2 0 1 0 8 0 kcovpl 48 12 0 4 1 0 1 1 0 8 0 ppxss 1168 9 0 9 1 0 1 1 0 8 1 pffrag 232 15 0 4 1 0 1 1 0 482 0 pffrnode 88 13 0 3 1 0 1 1 0 8 0 pffrent 40 29 0 18 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 pfstitem 24 86 0 27 1 0 1 1 0 8 0 pfstkey 128 86 0 27 3 0 3 3 0 8 0 pfstate 376 86 0 27 7 0 7 7 0 8 0 pfrule 1344 21 0 16 2 1 1 2 0 8 0 art_heap8 4096 4 0 0 4 0 4 4 0 8 0 art_heap4 256 528 0 114 30 0 30 30 0 8 1 art_table 32 532 0 114 4 0 4 4 0 8 0 art_node 16 138 0 42 1 0 1 1 0 8 0 sysvmsgpl 40 3 0 3 2 1 1 1 0 8 1 semupl 112 2 0 2 1 1 0 1 0 8 0 semapl 112 11 0 1 1 0 1 1 0 8 0 shmpl 112 6 0 2 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 5207 0 3665 97 0 97 97 0 8 0 ffsino 272 5207 0 3665 104 0 104 104 0 8 0 nchpl 144 8634 0 6928 64 0 64 64 0 8 0 uvmvnodes 80 5799 0 0 119 0 119 119 0 8 0 vnodes 216 5799 0 0 323 0 323 323 0 8 0 namei 1024 20496 0 20494 3 2 1 2 0 8 0 percpumem 16 61 0 14 1 0 1 1 0 8 0 vcpupl 3904 5 0 0 1 0 1 1 0 8 0 vmpool 696 6 0 1 1 0 1 1 0 8 0 kstatmem 264 54 0 28 3 0 3 3 0 8 1 scsiplug 72 1 0 1 1 0 1 1 0 8 1 scxspl 216 26453 0 26451 13 10 3 8 1 8 2 plimitpl 152 66 0 49 1 0 1 1 0 8 0 sigapl 424 3542 0 3492 8 2 6 8 0 8 0 futexpl 64 8297 0 8292 2 1 1 1 0 8 0 knotepl 120 317 0 0 10 0 10 10 0 8 0 kqueuepl 216 137 0 128 1 0 1 1 0 8 0 pipepl 320 203 0 176 4 1 3 4 0 8 0 fdescpl 496 3502 0 3472 5 0 5 5 0 8 0 filepl 152 6889 0 6646 10 0 10 10 0 8 0 lockfpl 104 270 0 268 1 0 1 1 0 8 0 lockfspl 48 129 0 127 1 0 1 1 0 8 0 sessionpl 144 43 0 34 1 0 1 1 0 8 0 pgrppl 48 80 0 63 1 0 1 1 0 8 0 ucredpl 104 390 0 376 1 0 1 1 0 8 0 zombiepl 144 3492 0 3492 3 2 1 1 0 8 1 processpl 1160 3542 0 3492 6 2 4 6 0 8 0 procpl 648 6687 0 6630 8 2 6 7 0 8 0 srpgc 96 2 0 2 1 0 1 1 0 8 1 sockpl 664 975 0 946 4 1 3 4 0 8 0 mcl64k 65536 17 0 0 3 0 3 3 0 8 0 mcl16k 16384 17 0 0 3 0 3 3 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 20 0 0 3 0 3 3 0 8 0 mcl4k 4096 13 0 0 2 0 2 2 0 8 0 mcl2k 2048 249 0 0 32 0 32 32 0 8 0 mtagpl 96 34 0 0 1 0 1 1 0 8 0 mbufpl 256 460 0 0 28 0 28 28 0 8 0 bufpl 280 6572 0 400 441 0 441 441 0 8 0 anonpl 24 416391 0 408168 84 17 67 69 0 185 17 amapchunkpl 152 92504 0 91994 33 8 25 25 0 158 4 amappl16 200 9009 0 8738 42 27 15 27 0 8 0 amappl15 192 9 0 8 1 0 1 1 0 8 0 amappl14 184 119 0 107 1 0 1 1 0 8 0 amappl13 176 9 0 9 1 1 0 1 0 8 0 amappl12 168 4186 0 4157 3 1 2 2 0 8 0 amappl11 160 59 0 45 1 0 1 1 0 8 0 amappl10 152 10 0 10 2 2 0 1 0 8 0 amappl9 144 152 0 152 1 1 0 1 0 8 0 amappl8 136 55 0 52 1 0 1 1 0 8 0 amappl7 128 111 0 98 1 0 1 1 0 8 0 amappl6 120 178 0 175 1 0 1 1 0 8 0 amappl5 112 148 0 136 1 0 1 1 0 8 0 amappl4 104 378 0 357 1 0 1 1 0 8 0 amappl3 96 20806 0 20702 4 0 4 4 0 8 0 amappl2 88 641 0 579 2 0 2 2 0 8 0 amappl1 80 17162 0 16577 14 0 14 14 0 8 0 amappl 88 27950 0 27783 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 8 0 2 1 0 1 1 0 8 0 uaddrrnd 24 3508 0 3473 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 3508 0 3473 1 0 1 1 0 8 0 vmmpekpl 168 20556 0 20511 3 0 3 3 0 8 0 vmmpepl 168 199606 0 197524 112 10 102 104 0 357 11 vmsppl 440 3507 0 3473 7 2 5 5 0 8 0 rwobjpl 56 51958 0 44963 101 2 99 99 0 8 0 pdppl 4096 7023 0 6951 131 55 76 83 0 8 4 pvpl 32 17951 0 0 145 0 145 145 0 265 0 pmappl 248 3507 0 3473 4 1 3 3 0 8 0 extentpl 40 56 0 38 1 0 1 1 0 8 0 phpool 112 450 0 60 12 0 12 12 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: 0x70c1ff626990, count: -1 ddb{0}> machine ddbcpu 1 Stopped at x86_ipi_db+0x27: addq $0x8,%rsp x86_ipi_db(ffff800029b7bff0) at x86_ipi_db+0x27 sys/arch/amd64/amd64/db_interface.c:393 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_4(b008,0) at x86_bus_space_io_read_4+0x37 sys/arch/amd64/amd64/bus_space.c:666 acpitimer_delay(1) at acpitimer_delay+0x175 acpitimer_read sys/dev/acpi/acpitimer.c:141 [inline] acpitimer_delay(1) at acpitimer_delay+0x175 sys/dev/acpi/acpitimer.c:125 comcnputc(800,20) at comcnputc+0x29b sys/dev/ic/com.c:1269 cnputc(20) at cnputc+0x61 sys/dev/cons.c:218 db_putchar(31) at db_putchar+0x524 db_force_whitespace sys/ddb/db_output.c:102 [inline] db_putchar(31) at db_putchar+0x524 sys/ddb/db_output.c:153 kprintf() at kprintf+0x2aba sys/kern/subr_prf.c:1065 db_printf(ffffffff8308f0b5) at db_printf+0x9b fault(ffffffff83037ecb) at fault+0xa7 sys/arch/amd64/amd64/trap.c:157 kpageflttrap(ffff80002a0f6260,8) at kpageflttrap+0x385 sys/arch/amd64/amd64/trap.c:290 kerntrap(ffff80002a0f6260) at kerntrap+0x14a sys/arch/amd64/amd64/trap.c:332 alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b end trace frame: 0xffff80002a0f6340, count: 0 ddb{1}> trace x86_ipi_db(ffff800029b7bff0) at x86_ipi_db+0x27 sys/arch/amd64/amd64/db_interface.c:393 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_4(b008,0) at x86_bus_space_io_read_4+0x37 sys/arch/amd64/amd64/bus_space.c:666 acpitimer_delay(1) at acpitimer_delay+0x175 acpitimer_read sys/dev/acpi/acpitimer.c:141 [inline] acpitimer_delay(1) at acpitimer_delay+0x175 sys/dev/acpi/acpitimer.c:125 comcnputc(800,20) at comcnputc+0x29b sys/dev/ic/com.c:1269 cnputc(20) at cnputc+0x61 sys/dev/cons.c:218 db_putchar(31) at db_putchar+0x524 db_force_whitespace sys/ddb/db_output.c:102 [inline] db_putchar(31) at db_putchar+0x524 sys/ddb/db_output.c:153 kprintf() at kprintf+0x2aba sys/kern/subr_prf.c:1065 db_printf(ffffffff8308f0b5) at db_printf+0x9b fault(ffffffff83037ecb) at fault+0xa7 sys/arch/amd64/amd64/trap.c:157 kpageflttrap(ffff80002a0f6260,8) at kpageflttrap+0x385 sys/arch/amd64/amd64/trap.c:290 kerntrap(ffff80002a0f6260) at kerntrap+0x14a sys/arch/amd64/amd64/trap.c:332 alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b fifo_write(ffff80002a0f6350) at fifo_write+0x6e sys/miscfs/fifofs/fifo_vnops.c:281 VOP_WRITE(fffffd805eec57d8,ffff80002a0f6408,3,fffffd807f7d36e8) at VOP_WRITE+0x102 sys/kern/vfs_vops.c:245 ktrwriteraw(ffff80002a16d700,fffffd805eec57d8,fffffd807f7d36e8,ffff80002a0f64d8,ffff80002a0f64b0) at ktrwriteraw+0x1bc sys/kern/kern_ktrace.c:682 ktrstruct(ffff80002a16d700,ffffffff82fd7506,ffff80002a0f6610,30) at ktrstruct+0x19a sys/kern/kern_ktrace.c:308 sys_sendmsg(ffff80002a16d700,ffff80002a0f6780,ffff80002a0f66d0) at sys_sendmsg+0x110 sys/kern/uipc_syscalls.c:584 syscall(ffff80002a0f6780) at syscall+0xbb6 mi_syscall sys/sys/syscall_mi.h:179 [inline] syscall(ffff80002a0f6780) at syscall+0xbb6 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x33edfd84600, count: -21