*cpu1: uvm_fault(0xfffffd805d2c55e0, 0x0, 0, 1) -> e ddb{0}> trace proc_trampoline() at proc_trampoline+0xc7 end of kernel end trace frame: 0x785eb4b4ff80, count: -1 ddb{0}> show registers rdi 0 rsi 0 rbp 0xffff80003c445f70 rbx 0 rdx 0 rcx 0xffff800032408568 rax 0x2a r8 0xffff80003c445ea0 r9 0xe7a6411a001 r10 0x66d61a90a095f915 r11 0xa295f503c07b6ba7 r12 0 r13 0 r14 0 r15 0 rip 0xffffffff828dd4c7 proc_trampoline+0xc7 cs 0x8 rflags 0x246 rsp 0xffff80003c445ef0 ss 0 proc_trampoline+0xc7: movl $0,%gs:0x688 ddb{0}> show proc PROC (syz-executor) tid=129443 pid=6380 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=0xffff800032408800,0xffffffff839bf130 process=0xffff800038426b70 user=0xffff80003c440000, vmspace=0xfffffd800b0275b8 estcpu=36, cpticks=1, pctcpu=0.0, user=0, sys=1, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND * 6380 129443 38513 0 7 0 syz-executor 38360 302251 2464 0 2 0 syz-executor 38360 85166 2464 0 3 0x4000080 ttyretype syz-executor 30673 82695 19472 0 3 0x80 nanoslp syz-executor 30673 373302 19472 0 3 0x4000080 lockf syz-executor 30673 330210 19472 0 3 0x4000080 fsleep syz-executor 73594 178001 67772 0 3 0x80 nanoslp syz-executor 73594 13534 67772 0 3 0x4000080 ttyin syz-executor 73594 503998 67772 0 3 0x4000080 fsleep syz-executor 14641 77944 83224 0 3 0x80 nanoslp syz-executor 14641 201282 83224 0 3 0x4000080 bell syz-executor 14641 339251 83224 0 3 0x4000080 bell syz-executor 17368 490307 60478 0 3 0x80 nanoslp syz-executor 17368 324913 60478 0 3 0x4000080 kqread syz-executor 17368 43834 60478 0 3 0x4000080 fsleep syz-executor 10491 361746 0 0 3 0x14200 acct acct 79360 451215 0 0 3 0x14280 nfsidl nfsio 20718 435368 0 0 3 0x14280 nfsidl nfsio 98949 313628 0 0 3 0x14280 nfsidl nfsio 31833 229833 0 0 3 0x14280 nfsidl nfsio 55978 337950 0 0 3 0x14280 nfsidl nfsio 44282 447414 0 0 3 0x14280 nfsidl nfsio 64517 511680 0 0 3 0x14280 nfsidl nfsio 47608 204756 0 0 3 0x14280 nfsidl nfsio 23495 78149 0 0 3 0x14280 nfsidl nfsio 69234 16886 0 0 3 0x14280 nfsidl nfsio 6790 104549 0 0 3 0x14280 nfsidl nfsio 20358 61153 0 0 3 0x14280 nfsidl nfsio 61888 500641 0 0 3 0x14280 nfsidl nfsio 84418 13280 0 0 3 0x14280 nfsidl nfsio 26758 436370 0 0 3 0x14280 nfsidl nfsio 65048 28590 0 0 3 0x14280 nfsidl nfsio 2062 273695 0 0 3 0x14280 nfsidl nfsio 89404 203077 0 0 3 0x14280 nfsidl nfsio 59086 56027 0 0 3 0x14280 nfsidl nfsio 13012 496025 0 0 3 0x14280 nfsidl nfsio 56107 502981 0 0 3 0x14200 bored sosplice 41184 457558 38623 0 3 0x82 wait syz-executor 54468 364144 38623 0 3 0x82 nanoslp syz-executor 67772 210187 38623 0 3 0x82 nanoslp syz-executor 2464 499969 38623 0 3 0x82 nanoslp syz-executor 60478 33106 38623 0 3 0x82 nanoslp syz-executor 83224 32818 38623 0 3 0x82 nanoslp syz-executor 38513 203092 38623 0 3 0x82 nanoslp syz-executor 19472 341575 38623 0 3 0x82 nanoslp syz-executor 38623 28127 85585 0 3 0x82 kqread syz-executor 85585 111479 73191 0 3 0x10008a sigsusp ksh 73191 340856 77975 0 3 0x98 kqread sshd-session 77975 461408 53678 0 3 0x92 kqread sshd-session 92561 290621 1 0 3 0x100083 ttyin getty 53678 155096 1 0 3 0x88 kqread sshd 1841 7077 45654 74 3 0x1100092 bpf pflogd 45654 19421 1 0 3 0x80 sbwait pflogd 38659 32 3040 73 3 0x1100090 kqread syslogd 3040 125129 1 0 3 0x100082 sbwait syslogd 65393 149461 1 0 3 0x100080 kqread resolvd 85006 100622 15158 77 3 0x100092 kqread dhcpleased 82247 395984 15158 77 3 0x100092 kqread dhcpleased 15158 225780 1 0 3 0x80 kqread dhcpleased 33692 445569 0 0 3 0x14200 bored smr 21952 290262 0 0 3 0x14200 pgzero zerothread 33345 67521 0 0 3 0x14200 aiodoned aiodoned 66778 276329 0 0 3 0x14200 syncer update 9716 58744 0 0 3 0x14200 cleaner cleaner 90010 298092 0 0 3 0x14200 reaper reaper 60544 509015 0 0 3 0x14200 pgdaemon pagedaemon 36963 119019 0 0 3 0x14200 bored viomb 59011 391792 0 0 3 0x40014200 acpi0 acpi0 47621 255136 0 0 3 0x40014200 idle1 89862 189909 0 0 3 0x14200 bored softnet7 51712 169736 0 0 3 0x14200 bored softnet6 5724 434200 0 0 3 0x14200 bored softnet5 57392 228616 0 0 3 0x14200 bored softnet4 433 475635 0 0 3 0x14200 bored softnet3 37740 231084 0 0 3 0x14200 bored softnet2 50925 138903 0 0 3 0x14200 bored softnet1 33092 274186 0 0 3 0x14200 bored softnet0 74253 40177 0 0 2 0x14200 systqmp 91870 342044 0 0 3 0x14200 bored systq 73330 284873 0 0 3 0x14200 tmoslp softclockmp 51634 90686 0 0 3 0x40014200 tmoslp softclock 78831 176702 0 0 3 0x40014200 idle0 1 395967 0 0 3 0x82 wait init 0 0 -1 0 3 0x10010200 scheduler swapper ddb{0}> show all locks Process 6380 (syz-executor) thread 0xffff800032408568 (129443) Process 74253 (systqmp) thread 0xffff8000ffffe000 (40177) ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10264 11077K 11354K 166960K 12401 0 pcb 17 16K 32K 166960K 372 0 rtable 199 10K 10K 166960K 427 0 pf 41 18K 83K 166960K 147 0 ifaddr 74 15K 15K 166960K 131 0 ifgroup 67 2K 3K 166960K 175 0 sysctl 3 1K 9K 166960K 22 0 counters 74 37K 38K 166960K 184 0 ioctlops 0 0K 4K 166960K 1626 0 iov 0 0K 28K 166960K 70 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1404 88K 89K 166960K 2305 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 9K 166960K 15 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 1K 166960K 39 0 dirhash 12 2K 2K 166960K 39 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 18 65K 97K 166960K 1096 0 sigio 0 0K 0K 166960K 19 0 proc 72 115K 164K 166960K 665 0 subproc 72 4K 4K 166960K 73 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 185 0 in_multi 79 5K 7K 166960K 148 0 ether_multi 1 0K 0K 166960K 10 0 mrt 1 0K 0K 166960K 12 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 247 1102K 1102K 166960K 247 0 exec 0 0K 1K 166960K 482 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 252 160K 178K 166960K 12009 0 UVM aobj 25 4K 4K 166960K 27 0 pinsyscall 43 86K 104K 166960K 2237 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 83 0 NDP 15 0K 2K 166960K 69 0 temp 70 8649K 8719K 166960K 61027 0 kqueue 13 20K 30K 166960K 218 0 SYN cache 2 8K 16K 166960K 3 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 120 173 0 170 3 2 1 2 0 8 0 rtentry 176 130 0 55 5 0 5 5 0 8 0 unpcb 144 1132 0 1115 9 5 4 6 0 8 3 syncache 336 9 0 9 2 1 1 1 0 8 1 tcpcb 736 735 0 727 10 3 7 7 0 8 6 arp 128 15 0 6 1 0 1 1 0 8 0 inpcb 328 1838 0 1824 21 11 10 15 0 8 8 nd6 144 23 0 6 1 0 1 1 0 8 0 pkpcb 40 6 0 6 2 1 1 1 0 8 1 kcovpl 48 8 0 0 1 0 1 1 0 8 0 ppxss 1192 43 0 43 1 0 1 1 0 8 1 pppxif 1504 4 0 4 2 2 0 1 0 8 0 pffrag 232 7 0 3 1 0 1 1 0 482 0 pffrnode 88 7 0 3 1 0 1 1 0 8 0 pffrent 40 24 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 pftag 88 1 0 1 1 1 0 1 0 8 0 pfstitem 24 90 0 31 1 0 1 1 0 8 0 pfstkey 128 90 0 31 3 0 3 3 0 8 0 pfstate 384 89 0 30 7 0 7 7 0 8 0 pfrule 1344 24 0 19 2 1 1 2 0 8 0 rttmr 136 2 0 2 1 1 0 1 0 8 0 art_heap8 4096 3 0 1 2 0 2 2 0 8 0 art_heap4 256 586 0 236 32 8 24 32 0 8 0 art_table 40 589 0 237 6 0 6 6 0 8 0 art_node 32 128 0 67 1 0 1 1 0 8 0 sysvmsgpl 40 15 0 10 1 0 1 1 0 8 0 semapl 112 33 0 23 1 0 1 1 0 8 0 shmpl 112 24 0 2 1 0 1 1 0 8 0 dirhash 1024 36 0 19 3 0 3 3 0 8 0 dino2pl 256 3581 0 2080 95 0 95 95 0 8 0 ffsino 296 3581 0 2080 117 0 117 117 0 8 0 nchpl 144 5143 0 3445 64 0 64 64 0 8 0 rtmask 32 3 0 3 2 1 1 1 0 8 1 uvmvnodes 80 4076 0 0 84 0 84 84 0 8 0 vnodes 216 4076 0 0 227 0 227 227 0 8 0 namei 1024 18300 0 18300 2 1 1 2 0 8 1 percpumem 16 107 0 55 1 0 1 1 0 8 0 kstatmem 264 112 0 76 3 0 3 3 0 8 0 acpiwqpl 32 1 0 1 1 0 1 1 1 8 1 scsiplug 72 4 0 4 2 2 0 1 0 8 0 scxspl 216 32951 0 32951 12 9 3 8 1 8 3 plimitpl 152 389 0 371 1 0 1 1 0 8 0 sigapl 424 1437 0 1361 9 0 9 9 0 8 0 knotepl 120 545 0 0 17 0 17 17 0 8 0 kqueuepl 224 445 0 434 7 2 5 5 0 8 4 pipepl 344 246 0 218 9 0 9 9 0 8 6 fdescpl 528 1392 0 1360 3 0 3 3 0 8 0 filepl 160 10395 0 10158 29 9 20 21 0 8 9 lockfpl 104 423 0 419 1 0 1 1 0 8 0 lockfspl 48 154 0 151 1 0 1 1 0 8 0 sessionpl 144 28 0 19 1 0 1 1 0 8 0 pgrppl 48 49 0 32 1 0 1 1 0 8 0 ucredpl 104 1834 0 1819 1 0 1 1 0 8 0 zombiepl 144 1363 0 1361 1 0 1 1 0 8 0 processpl 1232 1437 0 1361 6 0 6 6 0 8 0 procpl 664 3121 0 3036 8 0 8 8 0 8 0 sosppl 168 5 0 5 2 2 0 1 0 8 0 sockpl 752 3238 0 3204 56 42 14 26 0 8 10 mcl64k 65536 21 0 0 3 0 3 3 0 8 0 mcl16k 16384 6 0 0 1 0 1 1 0 8 0 mcl12k 12288 2 0 0 1 0 1 1 0 8 0 mcl9k 9216 1 0 0 1 0 1 1 0 8 0 mcl8k 8192 5 0 0 1 0 1 1 0 8 0 mcl4k 4096 110 0 0 14 0 14 14 0 8 0 mcl2k 2048 26 0 0 4 0 4 4 0 8 0 mtagpl 96 6 0 0 1 0 1 1 0 8 0 mbufpl 256 292 0 0 17 0 17 17 0 8 0 bufpl 280 13645 0 7502 440 0 440 440 0 8 0 anonpl 32 14025 0 0 114 0 114 114 0 246 0 amapchunkpl 152 40360 0 39826 34 6 28 30 0 158 5 amappl16 200 5636 0 5601 65 51 14 35 0 8 8 amappl15 192 9 0 8 1 0 1 1 0 8 0 amappl14 184 127 0 115 1 0 1 1 0 8 0 amappl13 176 3 0 3 1 1 0 1 0 8 0 amappl12 168 2049 0 2018 4 1 3 3 0 8 0 amappl11 160 50 0 36 1 0 1 1 0 8 0 amappl10 152 27 0 27 1 1 0 1 0 8 0 amappl9 144 253 0 252 2 1 1 1 0 8 0 amappl8 136 25 0 22 1 0 1 1 0 8 0 amappl7 128 116 0 104 1 0 1 1 0 8 0 amappl6 120 186 0 183 1 0 1 1 0 8 0 amappl5 112 121 0 111 1 0 1 1 0 8 0 amappl4 104 322 0 303 1 0 1 1 0 8 0 amappl3 96 7890 0 7768 4 0 4 4 0 8 0 amappl2 88 700 0 636 2 0 2 2 0 8 0 amappl1 80 13850 0 13239 16 1 15 15 0 8 0 amappl 88 11107 0 10928 5 0 5 5 0 92 0 dma16384 16384 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 dma512 512 1 0 1 1 1 0 1 0 8 0 dma256 256 6 0 6 1 1 0 1 0 8 0 dma128 128 255 0 255 2 2 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 20 0 19 1 0 1 1 0 8 0 aobjpl 72 26 0 2 1 0 1 1 0 8 0 uaddrrnd 24 1392 0 1360 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 1392 0 1360 1 0 1 1 0 8 0 vmmpekpl 168 13336 0 13299 3 0 3 3 0 8 0 vmmpepl 168 94768 0 92713 118 10 108 117 0 357 9 vmsppl 488 1391 0 1360 6 1 5 5 0 8 1 rwobjpl 80 31845 0 26784 105 0 105 105 0 8 1 pdppl 4096 2791 0 2720 111 38 73 87 0 8 2 pvpl 32 20404 0 0 165 0 165 165 0 265 0 pmappl 256 1391 0 1360 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 305 0 55 8 0 8 8 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: 0x785eb4b4ff80, count: -1 ddb{0}> machine ddbcpu 1 Stopped at x86_ipi_db+0x27: addq $0x8,%rsp x86_ipi_db(ffff8000299edff0) 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:674 acpitimer_delay(1) at acpitimer_delay+0x76 acpitimer_read sys/dev/acpi/acpitimer.c:142 [inline] acpitimer_delay(1) at acpitimer_delay+0x76 sys/dev/acpi/acpitimer.c:120 comcnputc(800,20) at comcnputc+0x29b sys/dev/ic/com.c:1269 cnputc(20) at cnputc+0x67 sys/dev/cons.c:218 db_putchar(2d) at db_putchar+0x126 db_force_whitespace sys/ddb/db_output.c:102 [inline] db_putchar(2d) at db_putchar+0x126 sys/ddb/db_output.c:153 kprintf() at kprintf+0x29a5 sys/kern/subr_prf.c:-1 db_printf(ffffffff83313d28) at db_printf+0x9b sys/kern/subr_prf.c:-1 fault(ffffffff833d3a9c) at fault+0xa7 sys/arch/amd64/amd64/trap.c:161 kpageflttrap(ffff80003c49f010,0) at kpageflttrap+0x37d sys/arch/amd64/amd64/trap.c:296 kerntrap(ffff80003c49f010) at kerntrap+0x198 sys/arch/amd64/amd64/trap.c:489 alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b end trace frame: 0xffff80003c49f0f0, count: 0 ddb{1}> trace x86_ipi_db(ffff8000299edff0) 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:674 acpitimer_delay(1) at acpitimer_delay+0x76 acpitimer_read sys/dev/acpi/acpitimer.c:142 [inline] acpitimer_delay(1) at acpitimer_delay+0x76 sys/dev/acpi/acpitimer.c:120 comcnputc(800,20) at comcnputc+0x29b sys/dev/ic/com.c:1269 cnputc(20) at cnputc+0x67 sys/dev/cons.c:218 db_putchar(2d) at db_putchar+0x126 db_force_whitespace sys/ddb/db_output.c:102 [inline] db_putchar(2d) at db_putchar+0x126 sys/ddb/db_output.c:153 kprintf() at kprintf+0x29a5 sys/kern/subr_prf.c:-1 db_printf(ffffffff83313d28) at db_printf+0x9b sys/kern/subr_prf.c:-1 fault(ffffffff833d3a9c) at fault+0xa7 sys/arch/amd64/amd64/trap.c:161 kpageflttrap(ffff80003c49f010,0) at kpageflttrap+0x37d sys/arch/amd64/amd64/trap.c:296 kerntrap(ffff80003c49f010) at kerntrap+0x198 sys/arch/amd64/amd64/trap.c:489 alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b dt_ioctl_record_stop(ffff800001472000) at dt_ioctl_record_stop+0x108 sys/dev/dt/dt_dev.c:586 dtclose(11e5f,81,2000,ffff800038416d28) at dtclose+0x109 dt_pcb_purge sys/dev/dt/dt_dev.c:-1 [inline] dtclose(11e5f,81,2000,ffff800038416d28) at dtclose+0x109 sys/dev/dt/dt_dev.c:232 spec_close(ffff80003c49f1c0) at spec_close+0x466 sys/kern/spec_vnops.c:-1 VOP_CLOSE(fffffd80657bbe80,81,fffffd80097fb410,ffff800038416d28) at VOP_CLOSE+0x132 sys/kern/vfs_vops.c:156 vn_closefile(fffffd806c377058,ffff800038416d28) at vn_closefile+0x12b vn_close sys/kern/vfs_vnops.c:292 [inline] vn_closefile(fffffd806c377058,ffff800038416d28) at vn_closefile+0x12b sys/kern/vfs_vnops.c:615 fdrop(fffffd806c377058,ffff800038416d28) at fdrop+0x121 sys/kern/kern_descrip.c:1280 closef(fffffd806c377058,ffff800038416d28) at closef+0x192 sys/kern/kern_descrip.c:1264 fdfree(ffff800038416d28) at fdfree+0x116 sys/kern/kern_descrip.c:1195 exit1(ffff800038416d28,0,0,1) at exit1+0x576 sys/kern/kern_exit.c:215 sys_exit(ffff800038416d28,ffff80003c49f530,ffff80003c49f480) at sys_exit+0x1a sys/kern/kern_exit.c:-1 syscall(ffff80003c49f530) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c49f530) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:746 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7ef29d66e7f0, count: -26