*cpu0: uvm_fault(0xfffffd806cdb66f8, 0xf, 0, 1) -> e ddb{1}> trace proc_trampoline() at proc_trampoline+0xc7 end of kernel end trace frame: 0x74703fa3ab60, count: -1 ddb{1}> show registers rdi 0 rsi 0 rbp 0xffff8000371bc2b0 rbx 0 rdx 0 rcx 0xffff8000371f6d00 rax 0x2a r8 0xffff8000371bc1e0 r9 0 r10 0x40b29c0f5505b2e8 r11 0x5bf32f5effaad065 r12 0 r13 0 r14 0 r15 0 rip 0xffffffff826a94c7 proc_trampoline+0xc7 cs 0x8 rflags 0x246 rsp 0xffff8000371bc230 ss 0 proc_trampoline+0xc7: movl $0,%gs:0x680 ddb{1}> show proc PROC (syz-executor) tid=123708 pid=29737 tcnt=1 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=0xffff8000371f6058,0xffffffff83518000 process=0xffff800037265238 user=0xffff8000371b7000, vmspace=0xfffffd806b929530 estcpu=36, cpticks=1, pctcpu=0.0, user=0, sys=1, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND *29737 123708 38442 0 7 0 syz-executor 41619 512071 73675 0 2 0 syz-executor 41619 162858 73675 0 7 0x4000000 syz-executor 72882 62291 88010 0 2 0x1000480 syz-executor 72882 242755 88010 0 3 0x5000080 sbwait syz-executor 72882 336459 88010 0 3 0x5000080 fsleep syz-executor 72882 94200 88010 0 3 0x5000080 fsleep syz-executor 90883 306237 1 0 3 0x80 nanoslp init 61178 432220 6659 0 2 0x2 syz-executor 88515 214507 6659 0 2 0x2 syz-executor 73675 268642 6659 0 3 0x82 nanoslp syz-executor 26374 28540 6659 0 2 0x482 syz-executor 1656 467849 6659 0 3 0x82 nanoslp syz-executor 53891 302451 6659 0 2 0x2 syz-executor 38442 17604 6659 0 3 0x82 nanoslp syz-executor 88010 296935 6659 0 2 0x482 syz-executor 70238 196016 0 0 3 0x14280 nfsidl nfsio 58015 100592 0 0 3 0x14280 nfsidl nfsio 87878 171375 0 0 3 0x14280 nfsidl nfsio 6505 505387 0 0 3 0x14280 nfsidl nfsio 9053 445591 0 0 3 0x14280 nfsidl nfsio 79312 315869 0 0 3 0x14280 nfsidl nfsio 61746 25248 0 0 3 0x14280 nfsidl nfsio 19947 202975 0 0 3 0x14280 nfsidl nfsio 77382 31685 0 0 3 0x14280 nfsidl nfsio 79654 130306 0 0 3 0x14280 nfsidl nfsio 64959 12218 0 0 3 0x14280 nfsidl nfsio 45718 250585 0 0 3 0x14280 nfsidl nfsio 55865 247591 0 0 3 0x14280 nfsidl nfsio 11020 47987 0 0 3 0x14280 nfsidl nfsio 88653 484894 0 0 3 0x14280 nfsidl nfsio 32643 504413 0 0 3 0x14280 nfsidl nfsio 98225 369778 0 0 3 0x14280 nfsidl nfsio 45736 200501 0 0 3 0x14280 nfsidl nfsio 30748 398738 0 0 3 0x14280 nfsidl nfsio 76576 161312 0 0 3 0x14280 nfsidl nfsio 33335 322552 0 0 3 0x14200 bored sosplice 6659 38492 91529 0 2 0x2 syz-executor 91529 216411 85817 0 3 0x10008a sigsusp ksh 85817 162807 63378 0 3 0x98 kqread sshd-session 63378 505852 41732 0 3 0x92 kqread sshd-session 41732 40823 1 0 3 0x88 kqread sshd 70849 401120 22427 74 3 0x1100092 bpf pflogd 22427 29124 1 0 3 0x80 sbwait pflogd 19379 287426 51662 73 3 0x1100090 kqread syslogd 51662 323118 1 0 3 0x100082 sbwait syslogd 70564 314820 1 0 3 0x100080 kqread resolvd 21507 449939 1749 77 3 0x100092 kqread dhcpleased 64729 109393 1749 77 3 0x100092 kqread dhcpleased 1749 39348 1 0 3 0x80 kqread dhcpleased 82406 29227 0 0 3 0x14200 bored smr 65311 102971 0 0 3 0x14200 pgzero zerothread 15597 93855 0 0 3 0x14200 aiodoned aiodoned 11560 330289 0 0 3 0x14200 syncer update 34935 88102 0 0 3 0x14200 cleaner cleaner 8900 387302 0 0 2 0x14200 reaper 8814 491195 0 0 3 0x14200 pgdaemon pagedaemon 38046 79881 0 0 3 0x14200 bored viomb 2026 407704 0 0 3 0x40014200 acpi0 acpi0 62722 515076 0 0 3 0x40014200 idle1 55353 392049 0 0 3 0x14200 bored softnet3 33803 256009 0 0 3 0x14200 bored softnet2 57537 208423 0 0 3 0x14200 bored softnet1 84078 50465 0 0 3 0x14200 bored softnet0 25630 229172 0 0 3 0x14200 bored systqmp 21882 509860 0 0 3 0x14200 bored systq 80513 205851 0 0 3 0x14200 tmoslp softclockmp 86693 67445 0 0 2 0x40014200 softclock 62286 175818 0 0 3 0x40014200 idle0 1 268680 0 0 3 0x80082 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{1}> show all locks Process 29737 (syz-executor) thread 0xffff8000371f6d00 (123708) Process 41619 (syz-executor) thread 0xffff8000371f6058 (162858) Process 61178 (syz-executor) thread 0xffff8000371cc560 (432220) Process 53891 (syz-executor) thread 0xffff80003728af68 (302451) ddb{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10396 11551K 11717K 166960K 34549 0 pcb 18 24K 26K 166960K 4999 0 rtable 222 8K 9K 166960K 9361 0 pf 42 19K 25K 166960K 1051 0 ifaddr 44 11K 12K 166960K 1333 0 ifgroup 64 2K 3K 166960K 1596 0 sysctl 4 1K 5K 166960K 58 0 counters 68 36K 37K 166960K 976 0 ioctlops 0 0K 4K 166960K 4050 0 iov 0 0K 28K 166960K 2021 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1549 97K 98K 166960K 19053 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 136K 188K 166960K 341 0 VM map 2 1K 1K 166960K 2 0 sem 21 141K 261K 166960K 223 0 dirhash 18 3K 4K 166960K 378 0 ACPI 1690 195K 286K 166960K 12468 0 file desc 14 49K 89K 166960K 21173 0 sigio 0 0K 0K 166960K 606 0 proc 69 91K 140K 166960K 9202 0 subproc 104 6K 7K 166960K 3240 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 3504 0 in_multi 86 6K 7K 166960K 3629 0 ether_multi 1 0K 0K 166960K 308 0 mrt 2 0K 0K 166960K 78 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 265 1182K 1182K 166960K 265 0 exec 0 0K 1K 166960K 7270 0 pfkey data 0 0K 0K 166960K 26 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 222 73K 110K 166960K 183701 0 UVM aobj 873 38K 38K 166960K 947 0 pinsyscall 38 76K 100K 166960K 28751 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 1K 166960K 1261 0 NDP 14 0K 2K 166960K 1031 0 temp 81 6824K 7080K 166960K 917145 0 kqueue 13 20K 34K 166960K 3192 0 SYN cache 2 16K 16K 166960K 2 0 ddb{1}> 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 2437 0 2434 17 16 1 4 0 8 0 rtentry 112 3219 0 3124 5 1 4 4 0 8 0 unpcb 144 15873 0 15856 118 116 2 9 0 8 1 syncache 336 47 0 47 17 17 0 1 0 8 0 tcpqe 32 7 26 7 6 6 0 1 0 8 0 tcpcb 808 7313 0 7304 130 128 2 15 0 8 0 arp 120 573 0 557 1 0 1 1 0 8 0 inpcb 336 25977 0 25910 188 177 11 17 0 8 2 nd6 136 867 0 843 3 2 1 2 0 8 0 pkpcb 40 308 0 308 41 40 1 2 0 8 1 kcovpl 48 246 0 238 1 0 1 1 0 8 0 ppxss 1168 152 0 152 36 35 1 1 0 8 1 pfstscr 40 2 0 2 2 2 0 1 0 8 0 pffrag 232 227 0 215 1 0 1 1 0 482 0 pffrnode 88 210 0 199 1 0 1 1 0 8 0 pffrent 40 886 0 874 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 pfanchor 1288 3 0 0 1 0 1 1 0 8 0 pftag 88 1 0 0 1 0 1 1 0 8 0 pfstitem 24 58 0 44 1 0 1 1 0 8 0 pfstkey 128 61 0 45 1 0 1 1 0 8 0 pfstate 376 57 0 45 4 2 2 3 0 8 0 pfrule 1344 45 0 32 5 3 2 2 0 8 0 art_heap8 4096 7 0 2 7 2 5 6 0 8 0 art_heap4 256 13347 0 12951 76 50 26 34 0 8 0 art_table 32 13354 0 12953 6 1 5 5 0 8 0 art_node 16 3163 0 3079 1 0 1 1 0 8 0 sysvmsgpl 40 38 0 26 1 0 1 1 0 8 0 semupl 112 5 0 5 5 5 0 1 0 8 0 semapl 112 209 0 190 1 0 1 1 0 8 0 shmpl 112 944 0 74 25 0 25 25 0 8 0 dirhash 1024 266 0 243 24 21 3 4 0 8 0 dino2pl 256 35015 0 32980 130 2 128 128 0 8 0 ffsino 272 35015 0 32980 136 0 136 136 0 8 0 nchpl 144 61086 0 60156 72 37 35 66 0 8 0 uvmvnodes 80 17175 0 0 351 0 351 351 0 8 0 vnodes 216 17175 0 0 955 0 955 955 0 8 0 namei 1024 247078 0 247076 26 25 1 2 0 8 0 percpumem 16 502 0 454 1 0 1 1 0 8 0 kstatmem 264 936 0 908 11 8 3 3 0 8 0 acpiwqpl 32 3 0 3 1 0 1 1 1 8 1 scsiplug 72 32 0 32 21 20 1 1 0 8 1 scxspl 216 334396 0 334396 48 47 1 8 1 8 1 plimitpl 152 4672 0 4656 1 0 1 1 0 8 0 sigapl 424 21143 0 21075 13 4 9 9 0 8 0 futexpl 64 274940 0 274938 21 20 1 1 0 8 0 knotepl 120 1384 0 0 24 0 24 24 0 8 0 kqueuepl 216 6942 0 6933 67 66 1 9 0 8 0 pipepl 320 3755 0 3728 61 53 8 8 0 8 5 fdescpl 496 21051 0 21023 9 4 5 5 0 8 0 filepl 152 154168 0 153924 184 168 16 25 0 8 4 lockfpl 104 8097 0 8095 12 11 1 2 0 8 0 lockfspl 48 2945 0 2943 1 0 1 1 0 8 0 sessionpl 144 321 0 313 1 0 1 1 0 8 0 pgrppl 48 958 0 942 1 0 1 1 0 8 0 ucredpl 104 28899 0 28885 1 0 1 1 0 8 0 zombiepl 144 21077 0 21075 2 1 1 1 0 8 0 processpl 1160 21143 0 21075 9 3 6 6 0 8 0 procpl 648 48353 0 48281 12 4 8 8 0 8 0 srpgc 96 126 0 126 30 30 0 1 0 8 0 sosppl 168 135 0 135 27 26 1 1 0 8 1 sockpl 664 48430 0 48343 323 309 14 27 0 8 5 mcl64k 65536 13 0 0 2 0 2 2 0 8 0 mcl16k 16384 11 0 0 2 0 2 2 0 8 0 mcl12k 12288 6 0 0 1 0 1 1 0 8 0 mcl9k 9216 4 0 0 1 0 1 1 0 8 0 mcl8k 8192 16 0 0 2 0 2 2 0 8 0 mcl4k 4096 222 0 0 18 5 13 18 0 8 0 mcl2k2 2112 2 0 0 1 0 1 1 0 8 0 mcl2k 2048 228 0 0 13 3 10 12 0 8 0 mtagpl 96 431 0 0 6 2 4 5 0 8 0 mbufpl 256 9518 0 0 552 0 552 552 0 8 0 bufpl 280 66469 0 59914 642 97 545 642 0 8 0 anonpl 24 2490423 0 2480873 314 227 87 109 0 185 4 amapchunkpl 152 603211 0 602637 233 203 30 44 0 158 1 amappl16 200 55348 0 55078 440 412 28 39 0 8 4 amappl15 192 12 0 12 1 1 0 1 0 8 0 amappl14 184 705 0 694 1 0 1 1 0 8 0 amappl13 176 31 0 31 5 5 0 1 0 8 0 amappl12 168 25559 0 25532 4 2 2 3 0 8 0 amappl11 160 58 0 43 1 0 1 1 0 8 0 amappl10 152 7 0 6 2 1 1 1 0 8 0 amappl9 144 138 0 137 2 1 1 1 0 8 0 amappl8 136 21 0 18 1 0 1 1 0 8 0 amappl7 128 649 0 637 1 0 1 1 0 8 0 amappl6 120 2553 0 2551 1 0 1 1 0 8 0 amappl5 112 1153 0 1139 1 0 1 1 0 8 0 amappl4 104 1315 0 1296 1 0 1 1 0 8 0 amappl3 96 126906 0 126811 5 1 4 4 0 8 0 amappl2 88 4532 0 4463 2 0 2 2 0 8 0 amappl1 80 95238 0 94708 21 7 14 17 0 8 0 amappl 88 179684 0 179520 6 0 6 6 0 92 0 dma65536 65536 3 0 3 3 3 0 1 0 8 0 dma32768 32768 6 0 6 5 5 0 1 0 8 0 dma16384 16384 3 0 3 3 3 0 1 0 8 0 dma8192 8192 1 0 1 1 1 0 1 0 8 0 dma4096 4096 3 0 3 2 2 0 1 0 8 0 dma2048 2048 8 0 8 5 5 0 1 0 8 0 dma1024 1024 1 0 0 1 0 1 1 0 8 0 dma512 512 36 0 36 4 4 0 1 0 8 0 dma256 256 9 0 9 4 4 0 1 0 8 0 dma128 128 298 0 298 8 7 1 1 0 8 1 dma64 64 10 0 10 5 5 0 1 0 8 0 dma32 32 14 0 14 7 7 0 1 0 8 0 dma16 16 26 0 25 1 0 1 1 0 8 0 aobjpl 72 946 0 74 16 0 16 16 0 8 0 uaddrrnd 24 21051 0 21023 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 21051 0 21023 1 0 1 1 0 8 0 vmmpekpl 168 139346 0 139268 5 1 4 4 0 8 0 vmmpepl 168 1260419 0 1258456 355 248 107 117 0 357 2 vmsppl 440 21050 0 21022 6 2 4 5 0 8 0 rwobjpl 56 317227 0 298049 304 30 274 274 0 8 0 pdppl 4096 42109 0 42044 519 448 71 83 0 8 6 pvpl 32 33357 0 0 266 0 266 266 0 265 0 pmappl 248 21050 0 21022 3 0 3 3 0 8 0 extentpl 40 55 0 38 1 0 1 1 0 8 0 phpool 112 1906 0 940 29 0 29 29 0 8 0 ddb{1}> machine ddbcpu 0 Stopped at x86_ipi_db+0x27: addq $0x8,%rsp x86_ipi_db(ffffffff83474ff0) 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+0x58 acpitimer_read sys/dev/acpi/acpitimer.c:141 [inline] acpitimer_delay(1) at acpitimer_delay+0x58 sys/dev/acpi/acpitimer.c:120 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(ffffffff8309412d) at db_printf+0x9b fault(ffffffff830425d9) at fault+0xa7 sys/arch/amd64/amd64/trap.c:157 kpageflttrap(ffff800036987e30,f) at kpageflttrap+0x385 sys/arch/amd64/amd64/trap.c:290 kerntrap(ffff800036987e30) at kerntrap+0x14a sys/arch/amd64/amd64/trap.c:332 alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b end trace frame: 0xffff800036987f60, count: 0 ddb{0}> trace x86_ipi_db(ffffffff83474ff0) 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+0x58 acpitimer_read sys/dev/acpi/acpitimer.c:141 [inline] acpitimer_delay(1) at acpitimer_delay+0x58 sys/dev/acpi/acpitimer.c:120 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(ffffffff8309412d) at db_printf+0x9b fault(ffffffff830425d9) at fault+0xa7 sys/arch/amd64/amd64/trap.c:157 kpageflttrap(ffff800036987e30,f) at kpageflttrap+0x385 sys/arch/amd64/amd64/trap.c:290 kerntrap(ffff800036987e30) at kerntrap+0x14a sys/arch/amd64/amd64/trap.c:332 alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b ktrops(ffff8000371f6058,ffffffffffffffff,0,80000310,fffffd804ddbcda8,fffffd807f7d32d8) at ktrops+0x58 ktrcanset sys/kern/kern_ktrace.c:718 [inline] ktrops(ffff8000371f6058,ffffffffffffffff,0,80000310,fffffd804ddbcda8,fffffd807f7d32d8) at ktrops+0x58 sys/kern/kern_ktrace.c:561 doktrace(fffffd804ddbcda8,4,310,0,ffff8000371f6058) at doktrace+0x6dd ktrsetchildren sys/kern/kern_ktrace.c:586 [inline] doktrace(fffffd804ddbcda8,4,310,0,ffff8000371f6058) at doktrace+0x6dd sys/kern/kern_ktrace.c:508 sys_ktrace(ffff8000371f6058,ffff800036988240,ffff800036988190) at sys_ktrace+0x11c sys/kern/kern_ktrace.c:549 syscall(ffff800036988240) at syscall+0xaf8 mi_syscall sys/sys/syscall_mi.h:179 [inline] syscall(ffff800036988240) at syscall+0xaf8 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x2b44e465d20, count: -19 ddb{0}> machine ddbcpu 1 Stopped at proc_trampoline+0xc7: movl $0,%gs:0x680 proc_trampoline() at proc_trampoline+0xc7 end of kernel end trace frame: 0x74703fa3ab60, count: 14 ddb{1}> trace proc_trampoline() at proc_trampoline+0xc7 end of kernel end trace frame: 0x74703fa3ab60, count: -1