*cpu1: uvm_fault(0xfffffd8067fe7d40, 0x0, 0, 1) -> e ddb{0}> trace proc_trampoline() at proc_trampoline+0xc7 end of kernel end trace frame: 0x7ec8c9253e80, count: -1 ddb{0}> show registers rdi 0 rsi 0 rbp 0xffff80003c41e3b0 rbx 0 rdx 0 rcx 0xffff8000ffff0f80 rax 0x2a r8 0xffff80003c41e2e0 r9 0x4 r10 0x5bac6c25fe790f30 r11 0x8f0497eff7fe2267 r12 0 r13 0 r14 0 r15 0 rip 0xffffffff830a44c7 proc_trampoline+0xc7 cs 0x8 rflags 0x246 rsp 0xffff80003c41e330 ss 0 proc_trampoline+0xc7: movl $0,%gs:0x680 ddb{0}> show proc PROC (syz-executor) tid=57843 pid=12284 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=0xffff8000ffff07d0,0xffffffff838c1378 process=0xffff8000fffe78c0 user=0xffff80003c419000, vmspace=0xfffffd8067fe7b60 estcpu=36, cpticks=1, pctcpu=0.0, user=0, sys=1, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND *12284 57843 7892 0 7 0 syz-executor 90916 411848 87084 -1 2 0x10 syz-executor 90916 382808 87084 -1 3 0x4000090 msgwait syz-executor 43509 482777 36037 0 2 0 syz-executor 43509 190145 36037 0 2 0x4000000 syz-executor 93548 308350 90764 0 3 0x80 nanoslp syz-executor 93548 16854 90764 0 3 0x4000080 kqsel syz-executor 93548 15992 90764 0 3 0x4000080 fsleep syz-executor 17649 63069 0 0 3 0x14200 acct acct 14999 397374 98184 0 3 0x80 nanoslp syz-executor 14999 151621 98184 0 3 0x4000080 kqread syz-executor 14999 44822 98184 0 3 0x4000080 fsleep syz-executor 18717 120341 7232 0 3 0x82 nanoslp syz-executor 87084 105061 7232 0 2 0x2 syz-executor 84560 255555 0 0 3 0x14200 bored sosplice 7892 242181 7232 0 3 0x82 nanoslp syz-executor 36037 455819 7232 0 3 0x82 nanoslp syz-executor 98184 221334 7232 0 3 0x82 nanoslp syz-executor 83811 79369 7232 0 3 0x82 nanoslp syz-executor 90764 274126 7232 0 3 0x82 nanoslp syz-executor 5493 133643 7232 0 2 0x2 syz-executor 7232 3916 84866 0 3 0x82 kqread syz-executor 84866 371516 35254 0 3 0x10008a sigsusp ksh 35254 77079 31555 0 3 0x98 kqread sshd-session 31555 404422 17673 0 3 0x92 kqread sshd-session 7280 364813 1 0 3 0x100083 ttyin getty 17673 118530 1 0 3 0x88 kqread sshd 62687 161902 13268 74 3 0x1100092 bpf pflogd 13268 518190 1 0 3 0x80 sbwait pflogd 81258 332692 81519 73 3 0x1100090 kqread syslogd 81519 471719 1 0 3 0x100082 sbwait syslogd 21678 139017 1 0 3 0x100080 kqread resolvd 13550 204972 5902 77 3 0x100092 kqread dhcpleased 53640 482400 5902 77 3 0x100092 kqread dhcpleased 5902 236165 1 0 3 0x80 kqread dhcpleased 85433 361063 0 0 2 0x40014200 smr 62665 30328 0 0 3 0x14200 pgzero zerothread 95993 259415 0 0 3 0x14200 aiodoned aiodoned 57516 150605 0 0 3 0x14200 syncer update 1407 488297 0 0 3 0x14200 cleaner cleaner 65621 262730 0 0 3 0x14200 reaper reaper 95885 36489 0 0 3 0x14200 pgdaemon pagedaemon 64461 187902 0 0 3 0x14200 bored viomb 7178 39345 0 0 3 0x40014200 acpi0 acpi0 29252 394256 0 0 3 0x40014200 idle1 66645 25451 0 0 3 0x14200 bored softnet3 9236 171910 0 0 3 0x14200 bored softnet2 37011 501366 0 0 3 0x14200 bored softnet1 10599 394127 0 0 3 0x14200 bored softnet0 5733 259776 0 0 3 0x14200 bored systqmp 58854 273157 0 0 3 0x14200 bored systq 7989 79474 0 0 3 0x14200 tmoslp softclockmp 3051 406585 0 0 3 0x40014200 tmoslp softclock 91045 222172 0 0 3 0x40014200 idle0 1 490827 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks Process 12284 (syz-executor) thread 0xffff8000ffff0f80 (57843) ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10238 11236K 11419K 166960K 12147 0 pcb 17 12K 13K 166960K 119 0 rtable 258 9K 9K 166960K 631 0 pf 37 18K 19K 166960K 85 0 ifaddr 45 8K 8K 166960K 74 0 ifgroup 60 2K 2K 166960K 108 0 sysctl 2 1K 9K 166960K 8 0 counters 68 36K 37K 166960K 240 0 ioctlops 0 0K 4K 166960K 1615 0 iov 0 0K 16K 166960K 87 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1351 85K 85K 166960K 1783 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 5K 166960K 10 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 0K 166960K 21 0 dirhash 15 2K 2K 166960K 21 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 18 65K 93K 166960K 630 0 sigio 0 0K 0K 166960K 9 0 proc 72 91K 128K 166960K 642 0 subproc 72 4K 4K 166960K 99 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 72 0 in_multi 99 7K 7K 166960K 150 0 ether_multi 1 0K 0K 166960K 6 0 mrt 0 0K 0K 166960K 5 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 103 466K 466K 166960K 103 0 exec 0 0K 1K 166960K 546 0 fusefs mount 1 32K 32K 166960K 1 0 pfkey data 0 0K 0K 166960K 1 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 237 159K 170K 166960K 7224 0 UVM aobj 3 2K 2K 166960K 3 0 pinsyscall 43 86K 106K 166960K 1821 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 55 0 NDP 15 0K 2K 166960K 50 0 temp 56 8666K 8740K 166960K 18519 0 kqueue 17 28K 30K 166960K 103 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 120 171 0 168 4 2 2 3 0 8 1 rtentry 176 158 0 41 6 0 6 6 0 8 0 unpcb 144 299 0 279 4 0 4 4 0 8 3 syncache 336 4 0 4 2 1 1 1 0 8 1 tcpqe 32 7 0 7 1 1 0 1 0 8 0 tcpcb 808 183 0 179 8 5 3 5 0 8 2 arp 128 26 0 7 1 0 1 1 0 8 0 inpcb 384 618 0 610 8 4 4 5 0 8 3 nd6 144 37 0 10 2 0 2 2 0 8 0 pkpcb 40 6 0 6 2 1 1 1 0 8 1 kcovpl 48 11 0 3 1 0 1 1 0 8 0 ppxss 1192 80 0 80 2 1 1 1 0 8 1 pppxif 1504 1 0 1 1 1 0 1 0 8 0 pffrag 232 2 0 0 1 0 1 1 0 482 0 pffrnode 88 2 0 0 1 0 1 1 0 8 0 pffrent 40 2 0 0 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 49 0 0 1 0 1 1 0 8 0 pfstkey 128 49 0 0 2 0 2 2 0 8 0 pfstate 384 49 0 0 5 0 5 5 0 8 0 pfrule 1344 21 0 16 2 1 1 2 0 8 0 rttmr 136 1 0 1 1 1 0 1 0 8 0 art_heap8 4096 2 0 0 2 0 2 2 0 8 0 art_heap4 256 638 0 173 32 2 30 31 0 8 0 art_table 32 640 0 173 4 0 4 4 0 8 0 art_node 16 156 0 50 1 0 1 1 0 8 0 sysvmsgpl 40 6 0 2 1 0 1 1 0 8 0 semupl 112 2 0 2 2 1 1 1 0 8 1 semapl 112 17 0 7 1 0 1 1 0 8 0 dirhash 1024 23 0 4 3 0 3 3 0 8 0 dino2pl 256 2482 0 971 95 0 95 95 0 8 0 ffsino 288 2482 0 971 109 0 109 109 0 8 0 nchpl 144 3278 0 1575 64 0 64 64 0 8 0 rtmask 32 5 0 5 1 0 1 1 0 8 1 uvmvnodes 80 2754 0 0 57 0 57 57 0 8 0 vnodes 216 2754 0 0 153 0 153 153 0 8 0 namei 1024 12047 0 12047 2 1 1 2 0 8 1 percpumem 16 135 0 86 1 0 1 1 0 8 0 kstatmem 264 58 0 30 3 1 2 3 0 8 0 scsiplug 72 2 0 2 2 2 0 1 0 8 0 scxspl 216 12011 0 12011 3 2 1 2 1 8 1 plimitpl 152 249 0 232 1 0 1 1 0 8 0 sigapl 424 934 0 882 8 2 6 7 0 8 0 knotepl 120 551 0 0 17 0 17 17 0 8 0 kqueuepl 224 261 0 246 3 1 2 3 0 8 1 pipepl 336 153 0 126 3 0 3 3 0 8 0 fdescpl 520 914 0 882 3 0 3 3 0 8 0 filepl 160 5327 0 5103 22 6 16 19 0 8 6 lockfpl 104 153 0 150 1 0 1 1 0 8 0 lockfspl 48 69 0 66 1 0 1 1 0 8 0 sessionpl 144 26 0 17 1 0 1 1 0 8 0 pgrppl 48 45 0 28 1 0 1 1 0 8 0 ucredpl 104 990 0 976 1 0 1 1 0 8 0 zombiepl 144 885 0 882 1 0 1 1 0 8 0 processpl 1208 934 0 882 5 0 5 5 0 8 0 procpl 656 1727 0 1669 7 1 6 6 0 8 0 srpgc 96 6 0 6 1 0 1 1 0 8 1 sosppl 168 1 0 1 1 1 0 1 0 8 0 sockpl 728 1113 0 1082 19 9 10 13 0 8 7 mcl64k 65536 3 0 0 1 0 1 1 0 8 0 mcl8k 8192 3 0 0 1 0 1 1 0 8 0 mcl4k 4096 118 0 0 15 0 15 15 0 8 0 mcl2k 2048 23 0 0 3 0 3 3 0 8 0 mtagpl 96 17 0 0 1 0 1 1 0 8 0 mbufpl 256 1176 0 0 74 0 74 74 0 8 0 bufpl 280 4157 0 128 288 0 288 288 0 8 0 anonpl 32 9458 0 0 77 0 77 77 0 246 0 amapchunkpl 152 22934 0 22445 33 5 28 28 0 158 4 amappl16 200 1993 0 1962 16 6 10 15 0 8 6 amappl15 192 5 0 5 1 1 0 1 0 8 0 amappl14 184 119 0 107 1 0 1 1 0 8 0 amappl13 176 26 0 26 1 1 0 1 0 8 0 amappl12 168 1613 0 1582 4 2 2 3 0 8 0 amappl11 160 72 0 57 1 0 1 1 0 8 0 amappl10 152 7 0 7 1 1 0 1 0 8 0 amappl9 144 257 0 257 1 1 0 1 0 8 0 amappl8 136 23 0 20 1 0 1 1 0 8 0 amappl7 128 115 0 103 1 0 1 1 0 8 0 amappl6 120 205 0 202 1 0 1 1 0 8 0 amappl5 112 131 0 122 1 0 1 1 0 8 0 amappl4 104 336 0 315 1 0 1 1 0 8 0 amappl3 96 4418 0 4305 5 1 4 4 0 8 0 amappl2 88 695 0 630 2 0 2 2 0 8 0 amappl1 80 10792 0 10181 18 3 15 15 0 8 1 amappl 88 6378 0 6213 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 8 0 8 2 2 0 1 0 8 0 dma128 128 254 0 254 2 2 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 2 0 0 1 0 1 1 0 8 0 uaddrrnd 24 914 0 882 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 914 0 882 1 0 1 1 0 8 0 vmmpekpl 168 8743 0 8696 3 0 3 3 0 8 0 vmmpepl 168 62532 0 60494 100 1 99 100 0 357 7 vmsppl 480 913 0 882 5 0 5 5 0 8 0 rwobjpl 72 20746 0 17049 70 1 69 69 0 8 0 pdppl 4096 1835 0 1764 103 30 73 85 0 8 2 pvpl 32 18113 0 0 147 0 147 147 0 265 0 pmappl 256 913 0 882 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 460 0 42 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: 0x7ec8c9253e80, 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_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+0x77 acpitimer_read sys/dev/acpi/acpitimer.c:142 [inline] acpitimer_delay(1) at acpitimer_delay+0x77 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(2d) at db_putchar+0x524 db_force_whitespace sys/ddb/db_output.c:102 [inline] db_putchar(2d) at db_putchar+0x524 sys/ddb/db_output.c:153 kprintf() at kprintf+0x2aba sys/kern/subr_prf.c:1065 db_printf(ffffffff83401c8e) at db_printf+0x9b sys/kern/subr_prf.c:-1 fault(ffffffff833a2361) at fault+0xa7 sys/arch/amd64/amd64/trap.c:157 kpageflttrap(ffff80002a39bcb0,0) at kpageflttrap+0x385 sys/arch/amd64/amd64/trap.c:290 kerntrap(ffff80002a39bcb0) at kerntrap+0x14a sys/arch/amd64/amd64/trap.c:332 alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b end trace frame: 0xffff80002a39bd90, 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_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+0x77 acpitimer_read sys/dev/acpi/acpitimer.c:142 [inline] acpitimer_delay(1) at acpitimer_delay+0x77 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(2d) at db_putchar+0x524 db_force_whitespace sys/ddb/db_output.c:102 [inline] db_putchar(2d) at db_putchar+0x524 sys/ddb/db_output.c:153 kprintf() at kprintf+0x2aba sys/kern/subr_prf.c:1065 db_printf(ffffffff83401c8e) at db_printf+0x9b sys/kern/subr_prf.c:-1 fault(ffffffff833a2361) at fault+0xa7 sys/arch/amd64/amd64/trap.c:157 kpageflttrap(ffff80002a39bcb0,0) at kpageflttrap+0x385 sys/arch/amd64/amd64/trap.c:290 kerntrap(ffff80002a39bcb0) at kerntrap+0x14a sys/arch/amd64/amd64/trap.c:332 alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b dt_ioctl_record_stop(ffff800001478000) at dt_ioctl_record_stop+0xf0 sys/dev/dt/dt_dev.c:579 dtclose(11e5f,1,2000,ffff80003abf39d0) at dtclose+0x105 dt_pcb_purge sys/dev/dt/dt_dev.c:-1 [inline] dtclose(11e5f,1,2000,ffff80003abf39d0) at dtclose+0x105 sys/dev/dt/dt_dev.c:232 spec_close(ffff80002a39be60) at spec_close+0x45f sys/kern/spec_vnops.c:-1 VOP_CLOSE(fffffd805c0cb048,1,fffffd807f7d3680,ffff80003abf39d0) at VOP_CLOSE+0x133 sys/kern/vfs_vops.c:156 vn_closefile(fffffd805c2ac120,ffff80003abf39d0) at vn_closefile+0x12b vn_close sys/kern/vfs_vnops.c:292 [inline] vn_closefile(fffffd805c2ac120,ffff80003abf39d0) at vn_closefile+0x12b sys/kern/vfs_vnops.c:615 fdrop(fffffd805c2ac120,ffff80003abf39d0) at fdrop+0x126 sys/kern/kern_descrip.c:1267 closef(fffffd805c2ac120,ffff80003abf39d0) at closef+0x192 sys/kern/kern_descrip.c:1251 fdfree(ffff80003abf39d0) at fdfree+0x116 sys/kern/kern_descrip.c:1182 exit1(ffff80003abf39d0,0,0,1) at exit1+0x58f sys/kern/kern_exit.c:214 sys_exit(ffff80003abf39d0,ffff80002a39c1d0,ffff80002a39c120) at sys_exit+0x1a sys/kern/kern_exit.c:-1 syscall(ffff80002a39c1d0) at syscall+0xb08 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80002a39c1d0) at syscall+0xb08 sys/arch/amd64/amd64/trap.c:579 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x770825348d10, count: -26