*cpu0: uvm_fault(0xfffffd806a353210, 0x0, 0, 1) -> e ddb{1}> trace proc_trampoline() at proc_trampoline+0xc7 end of kernel end trace frame: 0x784549d7fb50, count: -1 ddb{1}> show registers rdi 0 rsi 0 rbp 0xffff80002a315b50 rbx 0 rdx 0 rcx 0xffff8000ffff2fa0 rax 0x2a r8 0xffff80002a315a80 r9 0 r10 0xc41d12e586300e70 r11 0x49b1c184b3c6ce71 r12 0 r13 0 r14 0 r15 0 rip 0xffffffff82c134c7 proc_trampoline+0xc7 cs 0x8 rflags 0x246 rsp 0xffff80002a315ad0 ss 0 proc_trampoline+0xc7: movl $0,%gs:0x688 ddb{1}> show proc PROC (syz-executor) tid=318091 pid=90562 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=0xffff8000ffff3a00,0xffffffff839ba070 process=0xffff80003b824020 user=0xffff80002a310000, vmspace=0xfffffd800b0275b8 estcpu=36, cpticks=1, pctcpu=0.0, user=0, sys=1, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND *90562 318091 53190 0 7 0 syz-executor 30893 361333 93451 0 3 0x80 nanoslp syz-executor 30893 241483 93451 0 3 0x4000080 sbwait syz-executor 30893 344938 93451 0 3 0x4000080 fsleep syz-executor 34945 112163 0 0 3 0x14200 acct acct 9379 80592 33535 0 4 0x82000 syz-executor 9379 37886 33535 0 2 0x4082000 syz-executor 9379 189655 33535 0 3 0x4002000 suspend syz-executor 95930 523733 61713 0 3 0x82 nanoslp syz-executor 1135 335644 61713 0 2 0x2 syz-executor 21115 163278 61713 0 3 0x82 wait syz-executor 53190 127127 61713 0 3 0x82 nanoslp syz-executor 33535 275854 61713 0 3 0x82 nanoslp syz-executor 12942 197845 61713 0 3 0x82 nanoslp syz-executor 93451 320172 61713 0 3 0x82 nanoslp syz-executor 82076 132205 61713 0 2 0x10000003 syz-executor 65363 189573 1 0 3 0x100083 ttyin getty 17905 361037 0 0 3 0x14200 bored sosplice 61713 247813 83326 0 3 0x82 kqread syz-executor 83326 91110 8875 0 3 0x10008a sigsusp ksh 8875 75375 96627 0 3 0x98 kqread sshd-session 96627 80570 5627 0 3 0x92 kqread sshd-session 5627 122841 1 0 3 0x88 kqread sshd 14467 316338 55428 74 3 0x1100092 bpf pflogd 55428 301682 1 0 3 0x80 sbwait pflogd 23468 508022 90339 73 3 0x1100090 kqread syslogd 90339 78872 1 0 3 0x100082 sbwait syslogd 37968 319482 1 0 3 0x100080 kqread resolvd 13547 50463 0 0 3 0x14200 bored smr 40562 200740 0 0 3 0x14200 pgzero zerothread 51484 191597 0 0 3 0x14200 aiodoned aiodoned 56266 108200 0 0 3 0x14200 syncer update 11379 473281 0 0 3 0x14200 cleaner cleaner 73953 245040 0 0 3 0x14200 reaper reaper 33552 202185 0 0 3 0x14200 pgdaemon pagedaemon 55444 367858 0 0 3 0x14200 bored viomb 66939 421468 0 0 3 0x40014200 acpi0 acpi0 91996 107949 0 0 3 0x40014200 idle1 86389 424588 0 0 3 0x14200 bored softnet7 55706 164222 0 0 3 0x14200 bored softnet6 37804 375128 0 0 3 0x14200 bored softnet5 6513 308484 0 0 3 0x14200 bored softnet4 18559 353028 0 0 3 0x14200 bored softnet3 757 326573 0 0 3 0x14200 bored softnet2 45106 511207 0 0 3 0x14200 bored softnet1 97437 74060 0 0 3 0x14200 bored softnet0 820 400379 0 0 3 0x14200 bored systqmp 29829 82890 0 0 3 0x14200 bored systq 48772 13852 0 0 3 0x14200 tmoslp softclockmp 13067 48773 0 0 3 0x40014200 tmoslp softclock 45732 356218 0 0 3 0x40014200 idle0 1 205892 0 0 3 0x82 wait init 0 0 -1 0 3 0x10010200 scheduler swapper ddb{1}> show all locks Process 90562 (syz-executor) thread 0xffff8000ffff2fa0 (318091) Process 9379 (syz-executor) thread 0xffff80003c447a18 (37886) ddb{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10277 11128K 13689K 166960K 20909 0 pcb 17 22K 38K 166960K 4139 0 rtable 268 20K 20K 166960K 2387 0 pf 48 20K 131092K 166960K 1591 0 ifaddr 48 16K 20K 166960K 834 0 ifgroup 71 3K 3K 166960K 1530 0 sysctl 4 1K 17K 166960K 274 0 counters 74 37K 39K 166960K 2220 0 ioctlops 0 0K 8K 166960K 6031 0 iov 1 2K 32K 166960K 1754 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1771 111K 112K 166960K 12339 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 5K 17K 166960K 124 0 VM map 2 1K 1K 166960K 2 0 sem 33 280K 520K 166960K 451 0 dirhash 12 2K 3K 166960K 306 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 17 61K 240K 166960K 13677 0 sigio 0 0K 0K 166960K 367 0 proc 66 83K 179K 166960K 2735 0 subproc 72 4K 4K 166960K 331 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 2329 0 in_multi 58 4K 7K 166960K 1096 0 ether_multi 1 0K 0K 166960K 174 0 mrt 3 0K 0K 166960K 82 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 283 1261K 1261K 166960K 283 0 exec 0 0K 1K 166960K 3726 0 fusefs mount 1 32K 32K 166960K 1 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 224 137K 180K 166960K 123008 0 UVM aobj 201 7K 8K 166960K 210 0 pinsyscall 36 72K 100K 166960K 15379 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 2 0K 1K 166960K 992 0 NDP 15 0K 1K 166960K 630 0 temp 109 8652K 8908K 166960K 651741 0 kqueue 7 12K 34K 166960K 3044 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 26 0 0 1 0 1 1 0 8 0 rtpcb 120 1591 0 1590 12 11 1 3 0 8 0 rtentry 176 792 0 706 6 1 5 5 0 8 0 unpcb 144 11454 0 11442 72 71 1 10 0 8 0 syncache 336 5 0 5 2 2 0 1 0 8 0 tcpqe 32 1 0 1 1 1 0 1 0 8 0 tcpcb 736 6252 0 6233 111 109 2 14 0 8 0 arp 136 96 0 80 1 0 1 1 0 8 0 inpcb 328 18789 0 18768 138 135 3 18 0 8 0 nd6 144 110 0 98 1 0 1 1 0 8 0 pkpcb 40 153 0 153 18 17 1 1 0 8 1 kcovpl 48 36 0 28 1 0 1 1 0 8 0 mppekey 1024 13 0 13 10 10 0 1 0 8 0 ppxss 1192 924 0 924 9 8 1 1 0 8 1 pppxif 1504 67 0 67 21 21 0 1 0 8 0 pfstscr 40 36 0 34 1 0 1 1 0 8 0 pffrag 232 100 0 95 1 0 1 1 0 482 0 pffrnode 88 60 0 55 1 0 1 1 0 8 0 pffrent 40 334 0 329 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 10 0 10 7 7 0 1 0 8 0 pfanchor 1288 3 0 0 1 0 1 1 0 8 0 pftag 88 2 0 0 1 0 1 1 0 8 0 pfstitem 24 817 0 725 1 0 1 1 0 8 0 pfstkey 128 884 0 793 6 0 6 6 0 8 0 pfstate 384 849 0 759 17 3 14 17 0 8 0 pfrule 1344 33 0 27 2 1 1 2 0 8 0 rttmr 136 21 0 21 10 10 0 1 0 8 0 art_heap8 4096 10 0 6 10 6 4 6 0 8 0 art_heap4 256 4124 0 3834 67 47 20 30 0 8 0 art_table 40 4134 0 3840 6 1 5 5 0 8 0 art_node 32 766 0 704 1 0 1 1 0 8 0 sysvmsgpl 40 3 0 2 1 0 1 1 0 8 0 semupl 112 5 0 5 5 5 0 1 0 8 0 semapl 112 430 0 399 1 0 1 1 0 8 0 shmpl 112 207 0 9 6 0 6 6 0 8 0 dirhash 1024 215 0 198 3 0 3 3 0 8 0 dino2pl 256 28623 0 27009 101 0 101 101 0 8 0 ffsino 296 28623 0 27009 126 1 125 125 0 8 0 nchpl 144 48520 0 47845 64 38 26 64 0 8 0 rtmask 32 139 0 139 21 21 0 1 0 8 0 uvmvnodes 80 6107 0 0 125 0 125 125 0 8 0 vnodes 216 6107 0 0 340 0 340 340 0 8 0 namei 1024 176864 0 176864 9 8 1 2 0 8 1 percpumem 16 1125 0 1073 1 0 1 1 0 8 0 kstatmem 264 1108 0 1072 4 1 3 3 0 8 0 acpiwqpl 32 6 0 6 1 0 1 1 1 8 1 scsiplug 72 56 0 56 22 21 1 1 0 8 1 scxspl 216 296656 0 296656 34 33 1 6 1 8 1 plimitpl 152 4048 0 4030 2 1 1 2 0 8 0 sigapl 424 13859 0 13806 7 0 7 7 0 8 0 knotepl 120 839 0 0 24 0 24 24 0 8 0 kqueuepl 224 6616 0 6610 46 43 3 5 0 8 2 pipepl 344 1830 0 1801 40 37 3 9 0 8 0 fdescpl 528 13784 0 13756 3 0 3 3 0 8 0 filepl 160 109207 0 108991 84 69 15 22 0 8 0 lockfpl 104 5481 0 5480 7 6 1 2 0 8 0 lockfspl 48 1817 0 1816 1 0 1 1 0 8 0 sessionpl 144 53 0 45 1 0 1 1 0 8 0 pgrppl 48 378 0 362 1 0 1 1 0 8 0 ucredpl 104 19380 0 19368 1 0 1 1 0 8 0 zombiepl 144 19927 0 19922 4 3 1 1 0 8 0 processpl 1232 13859 0 13806 5 0 5 5 0 8 0 procpl 664 36821 0 36764 11 4 7 7 0 8 0 sosppl 168 99 0 99 24 24 0 1 0 8 0 sockpl 752 32778 0 32744 241 235 6 29 0 8 0 mcl64k 65536 22 0 0 3 0 3 3 0 8 0 mcl16k 16384 4 0 0 1 0 1 1 0 8 0 mcl12k 12288 2 0 0 1 0 1 1 0 8 0 mcl9k 9216 2 0 0 1 0 1 1 0 8 0 mcl8k 8192 7 0 0 1 0 1 1 0 8 0 mcl4k 4096 125 0 0 14 0 14 14 0 8 0 mcl2k2 2112 2 0 0 1 0 1 1 0 8 0 mcl2k 2048 119 0 0 7 1 6 7 0 8 0 mtagpl 96 10 0 0 1 0 1 1 0 8 0 mbufpl 256 2665 0 0 159 0 159 159 0 8 0 bufpl 280 119421 0 113292 440 0 440 440 0 8 0 anonpl 32 17225 0 0 137 0 137 137 0 246 0 amapchunkpl 152 444821 0 444245 164 134 30 39 0 158 2 amappl16 200 45513 0 45239 296 279 17 40 0 8 0 amappl15 192 8 0 8 3 3 0 1 0 8 0 amappl14 184 177 0 168 1 0 1 1 0 8 0 amappl13 176 42 0 41 1 0 1 1 0 8 0 amappl12 168 14879 0 14851 3 1 2 2 0 8 0 amappl11 160 76 0 68 1 0 1 1 0 8 0 amappl10 152 4 0 4 1 1 0 1 0 8 0 amappl9 144 258 0 257 2 1 1 1 0 8 0 amappl8 136 26 0 23 1 0 1 1 0 8 0 amappl7 128 188 0 177 1 0 1 1 0 8 0 amappl6 120 460 0 455 1 0 1 1 0 8 0 amappl5 112 249 0 242 1 0 1 1 0 8 0 amappl4 104 341 0 321 1 0 1 1 0 8 0 amappl3 96 79759 0 79670 4 0 4 4 0 8 0 amappl2 88 14134 0 14062 2 0 2 2 0 8 0 amappl1 80 64968 0 64460 17 2 15 15 0 8 0 amappl 88 119415 0 119248 6 1 5 5 0 92 0 dma65536 65536 65 0 65 1 1 0 1 0 8 0 dma32768 32768 1 0 1 1 1 0 1 0 8 0 dma16384 16384 4 0 4 4 4 0 1 0 8 0 dma8192 8192 1 0 1 1 1 0 1 0 8 0 dma4096 4096 4 0 4 4 4 0 1 0 8 0 dma2048 2048 2 0 2 2 2 0 1 0 8 0 dma1024 1024 7 0 6 1 0 1 1 0 8 0 dma512 512 1 0 1 1 1 0 1 0 8 0 dma256 256 9 0 9 4 4 0 1 0 8 0 dma128 128 266 0 266 12 12 0 1 0 8 0 dma64 64 17 0 17 9 9 0 1 0 8 0 dma32 32 9 0 9 3 3 0 1 0 8 0 dma16 16 24 0 23 1 0 1 1 0 8 0 aobjpl 72 209 0 9 4 0 4 4 0 8 0 uaddrrnd 24 13784 0 13756 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 13784 0 13756 1 0 1 1 0 8 0 vmmpekpl 168 94354 0 94288 5 1 4 4 0 8 0 vmmpepl 168 848028 0 846053 220 129 91 113 0 357 0 vmsppl 488 13783 0 13756 6 2 4 5 0 8 0 rwobjpl 80 208532 0 201152 171 13 158 158 0 8 0 pdppl 4096 27576 0 27512 160 94 66 82 0 8 2 pvpl 32 25554 0 0 205 2 203 203 0 265 0 pmappl 256 13783 0 13756 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 680 0 295 12 0 12 12 0 8 0 ddb{1}> machine ddbcpu 0 Stopped at x86_ipi_db+0x27: addq $0x8,%rsp x86_ipi_db(ffffffff837e3ff0) 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+0xb7 acpitimer_read sys/dev/acpi/acpitimer.c:146 [inline] acpitimer_delay(1) at acpitimer_delay+0xb7 sys/dev/acpi/acpitimer.c:120 comcnputc(800,d) at comcnputc+0x29b sys/dev/ic/com.c:1269 db_putchar(a) at db_putchar+0x498 sys/ddb/db_output.c:168 kprintf() at kprintf+0x203 sys/kern/subr_prf.c:723 db_printf(ffffffff83314a39) at db_printf+0x9b sys/kern/subr_prf.c:-1 fault(ffffffff833d4df8) at fault+0xa7 sys/arch/amd64/amd64/trap.c:161 kpageflttrap(ffff80002a2f6d20,0) at kpageflttrap+0x37d sys/arch/amd64/amd64/trap.c:296 kerntrap(ffff80002a2f6d20) at kerntrap+0x198 sys/arch/amd64/amd64/trap.c:489 alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b dt_ioctl_record_stop(ffff800001704000) at dt_ioctl_record_stop+0x108 sys/dev/dt/dt_dev.c:586 end trace frame: 0xffff80002a2f6e50, count: 0 ddb{0}> trace x86_ipi_db(ffffffff837e3ff0) 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+0xb7 acpitimer_read sys/dev/acpi/acpitimer.c:146 [inline] acpitimer_delay(1) at acpitimer_delay+0xb7 sys/dev/acpi/acpitimer.c:120 comcnputc(800,d) at comcnputc+0x29b sys/dev/ic/com.c:1269 db_putchar(a) at db_putchar+0x498 sys/ddb/db_output.c:168 kprintf() at kprintf+0x203 sys/kern/subr_prf.c:723 db_printf(ffffffff83314a39) at db_printf+0x9b sys/kern/subr_prf.c:-1 fault(ffffffff833d4df8) at fault+0xa7 sys/arch/amd64/amd64/trap.c:161 kpageflttrap(ffff80002a2f6d20,0) at kpageflttrap+0x37d sys/arch/amd64/amd64/trap.c:296 kerntrap(ffff80002a2f6d20) at kerntrap+0x198 sys/arch/amd64/amd64/trap.c:489 alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b dt_ioctl_record_stop(ffff800001704000) at dt_ioctl_record_stop+0x108 sys/dev/dt/dt_dev.c:586 dtclose(21e5f,81,2000,ffff8000ffff3a00) at dtclose+0x109 dt_pcb_purge sys/dev/dt/dt_dev.c:-1 [inline] dtclose(21e5f,81,2000,ffff8000ffff3a00) at dtclose+0x109 sys/dev/dt/dt_dev.c:232 spec_close(ffff80002a2f6ed0) at spec_close+0x466 sys/kern/spec_vnops.c:-1 VOP_CLOSE(fffffd805a50ad80,81,fffffd80097fb068,ffff8000ffff3a00) at VOP_CLOSE+0x132 sys/kern/vfs_vops.c:156 vn_closefile(fffffd8075139b60,ffff8000ffff3a00) at vn_closefile+0x12b vn_close sys/kern/vfs_vnops.c:292 [inline] vn_closefile(fffffd8075139b60,ffff8000ffff3a00) at vn_closefile+0x12b sys/kern/vfs_vnops.c:615 fdrop(fffffd8075139b60,ffff8000ffff3a00) at fdrop+0x121 sys/kern/kern_descrip.c:1280 closef(fffffd8075139b60,ffff8000ffff3a00) at closef+0x192 sys/kern/kern_descrip.c:1264 fdfree(ffff8000ffff3a00) at fdfree+0x116 sys/kern/kern_descrip.c:1195 exit1(ffff8000ffff3a00,0,0,1) at exit1+0x576 sys/kern/kern_exit.c:215 sys_exit(ffff8000ffff3a00,ffff80002a2f7240,ffff80002a2f7190) at sys_exit+0x1a sys/kern/kern_exit.c:-1 syscall(ffff80002a2f7240) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80002a2f7240) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:746 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7ce67fd1ed10, count: -25 ddb{0}> machine ddbcpu 1 Stopped at proc_trampoline+0xc7: movl $0,%gs:0x688 proc_trampoline() at proc_trampoline+0xc7 end of kernel end trace frame: 0x784549d7fb50, count: 14 ddb{1}> trace proc_trampoline() at proc_trampoline+0xc7 end of kernel end trace frame: 0x784549d7fb50, count: -1