*cpu1: uvm_fault(0xfffffd806b9d55d0, 0x0, 0, 1) -> e ddb{0}> trace proc_trampoline() at proc_trampoline+0xc7 end of kernel end trace frame: 0x7d6f4adbcb90, count: -1 ddb{0}> show registers rdi 0 rsi 0 rbp 0xffff80002a3b5f00 rbx 0 rdx 0 rcx 0xffff80002fc01cc8 rax 0x2a r8 0xffff80002a3b5e30 r9 0x4 r10 0x9c2514705841b7b0 r11 0xb0f4302fc09472a8 r12 0 r13 0 r14 0 r15 0 rip 0xffffffff813db4c7 proc_trampoline+0xc7 cs 0x8 rflags 0x246 rsp 0xffff80002a3b5e80 ss 0 proc_trampoline+0xc7: movl $0,%gs:0x688 ddb{0}> show proc PROC (syz-executor) tid=445821 pid=91880 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=0xffff80002fc01a30,0xffffffff839c69a0 process=0xffff800036024020 user=0xffff80002a3b0000, vmspace=0xfffffd800b0277a0 estcpu=36, cpticks=1, pctcpu=0.0, user=0, sys=1, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND *91880 445821 62774 0 7 0 syz-executor 72829 391490 66374 0 3 0x80 nanoslp syz-executor 72829 111402 66374 0 3 0x4000080 sbwait syz-executor 72829 225090 66374 0 3 0x4000080 fsleep syz-executor 73132 77408 32631 0 3 0x80 nanoslp syz-executor 73132 320225 32631 0 3 0x4000080 kqsel syz-executor 73132 230631 32631 0 3 0x4000080 fsleep syz-executor 5764 364379 0 0 3 0x14200 acct acct 52438 415776 1 0 3 0x100083 ttyin getty 80282 233657 36934 0 3 0x82 wait syz-executor 21910 176983 36934 0 3 0x82 nanoslp syz-executor 66374 256936 36934 0 3 0x82 nanoslp syz-executor 32631 148464 36934 0 3 0x82 nanoslp syz-executor 69220 201534 36934 0 3 0x82 nanoslp syz-executor 38224 352025 36934 0 3 0x82 wait syz-executor 76198 379726 36934 0 3 0x82 nanoslp syz-executor 62774 216227 36934 0 3 0x82 nanoslp syz-executor 66951 52428 0 0 3 0x14200 bored sosplice 36934 127926 80406 0 3 0x82 kqread syz-executor 80406 351954 39554 0 3 0x10008a sigsusp ksh 39554 72322 12257 0 3 0x98 kqread sshd-session 12257 513168 21973 0 3 0x92 kqread sshd-session 21973 399767 1 0 3 0x88 kqread sshd 33600 27140 49953 74 3 0x1100092 bpf pflogd 49953 168992 1 0 3 0x80 sbwait pflogd 80689 475690 89009 73 3 0x1100090 kqread syslogd 89009 385873 1 0 3 0x100082 sbwait syslogd 43973 318282 1 0 3 0x100080 kqread resolvd 4944 138899 0 0 3 0x14200 bored smr 86197 22448 0 0 3 0x14200 pgzero zerothread 42608 330923 0 0 3 0x14200 aiodoned aiodoned 85909 33474 0 0 3 0x14200 syncer update 80664 321966 0 0 3 0x14200 cleaner cleaner 79727 151689 0 0 2 0x14200 reaper 73422 160523 0 0 3 0x14200 pgdaemon pagedaemon 27686 173874 0 0 3 0x14200 bored viomb 14257 162664 0 0 3 0x40014200 acpi0 acpi0 4323 309901 0 0 3 0x40014200 idle1 96388 464057 0 0 3 0x14200 bored softnet7 5064 430447 0 0 3 0x14200 bored softnet6 77302 357953 0 0 3 0x14200 bored softnet5 49119 250328 0 0 3 0x14200 bored softnet4 3573 413554 0 0 3 0x14200 bored softnet3 42631 436042 0 0 3 0x14200 bored softnet2 17064 490150 0 0 3 0x14200 bored softnet1 22981 69088 0 0 3 0x14200 bored softnet0 45179 392930 0 0 3 0x14200 bored systqmp 56333 491359 0 0 3 0x14200 bored systq 37923 508060 0 0 3 0x14200 tmoslp softclockmp 88779 423838 0 0 3 0x40014200 tmoslp softclock 34053 268215 0 0 3 0x40014200 idle0 1 389340 0 0 3 0x80082 wait init 0 0 -1 0 3 0x10010200 scheduler swapper ddb{0}> show all locks Process 91880 (syz-executor) thread 0xffff80002fc01cc8 (445821) Process 79727 (reaper) thread 0xffff8000ffffca68 (151689) ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10296 11227K 12460K 166960K 18382 0 pcb 17 22K 38K 166960K 2572 0 rtable 204 18K 20K 166960K 2370 0 pf 43 19K 131092K 166960K 1040 0 ifaddr 35 8K 13K 166960K 541 0 ifgroup 67 2K 3K 166960K 1017 0 sysctl 4 1K 9K 166960K 119 0 counters 74 37K 39K 166960K 1416 0 ioctlops 0 0K 8K 166960K 3877 0 iov 0 0K 36K 166960K 897 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1644 103K 104K 166960K 8980 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 5K 17K 166960K 80 0 VM map 2 1K 1K 166960K 2 0 sem 30 77K 82K 166960K 66 0 dirhash 12 2K 3K 166960K 192 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 18 65K 240K 166960K 9962 0 sigio 0 0K 0K 166960K 522 0 proc 68 83K 164K 166960K 2407 0 subproc 72 4K 4K 166960K 293 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 1 0K 0K 166960K 1643 0 in_multi 50 3K 7K 166960K 703 0 ether_multi 1 0K 0K 166960K 99 0 mrt 2 0K 0K 166960K 56 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 271 1208K 1208K 166960K 271 0 exec 0 0K 1K 166960K 2314 0 fusefs mount 1 32K 32K 166960K 1 0 pfkey data 0 0K 0K 166960K 16 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 232 135K 196K 166960K 87648 0 UVM aobj 108 4K 5K 166960K 116 0 pinsyscall 37 74K 104K 166960K 11682 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 648 0 NDP 15 0K 2K 166960K 427 0 temp 155 8653K 8920K 166960K 470141 0 kqueue 9 16K 34K 166960K 2020 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 1257 0 1255 14 13 1 3 0 8 0 rtentry 176 750 0 692 6 2 4 5 0 8 0 unpcb 144 8429 0 8419 64 61 3 11 0 8 2 syncache 336 38 0 38 10 10 0 1 0 8 0 tcpqe 32 14 0 14 6 6 0 1 0 8 0 tcpcb 736 3966 0 3894 70 63 7 13 0 8 0 arp 128 69 0 58 1 0 1 1 0 8 0 inpcb 328 13078 0 12939 115 102 13 19 0 8 1 nd6 144 106 0 93 1 0 1 1 0 8 0 pkpcb 40 157 0 157 16 15 1 1 0 8 1 kcovpl 48 32 0 24 1 0 1 1 0 8 0 mppekey 1024 10 0 10 6 6 0 1 0 8 0 ppxss 1192 577 0 577 7 6 1 1 0 8 1 pppxif 1504 97 0 97 15 15 0 1 0 8 0 pffrag 232 137 0 126 1 0 1 1 0 482 0 pffrnode 88 77 0 68 1 0 1 1 0 8 0 pffrent 40 258 0 247 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 8 8 0 1 0 8 0 pftag 88 2 0 1 1 0 1 1 0 8 0 pfstitem 24 698 0 537 2 0 2 2 0 8 0 pfstkey 128 698 0 537 6 0 6 6 0 8 0 pfstate 384 694 0 535 20 2 18 18 0 8 0 pfrule 1344 32 0 27 2 1 1 2 0 8 0 rttmr 136 7 0 7 5 5 0 1 0 8 0 art_heap8 4096 71 0 66 71 2 69 69 0 8 64 art_heap4 256 3008 0 2736 65 33 32 43 0 8 8 art_table 40 3079 0 2802 9 1 8 8 0 8 2 art_node 32 739 0 690 2 0 2 2 0 8 0 sysvmsgpl 40 9 0 5 1 0 1 1 0 8 0 semupl 112 2 0 2 2 2 0 1 0 8 0 semapl 112 55 0 27 1 0 1 1 0 8 0 shmpl 112 113 0 8 3 0 3 3 0 8 0 dirhash 1024 138 0 121 3 0 3 3 0 8 0 dino2pl 256 20932 0 19350 102 2 100 100 0 8 0 ffsino 296 20932 0 19350 124 1 123 123 0 8 0 nchpl 144 34930 0 34315 65 37 28 65 0 8 0 rtmask 32 93 0 93 15 14 1 1 0 8 1 uvmvnodes 80 23944 0 0 489 0 489 489 0 8 0 vnodes 216 23944 0 0 1331 0 1331 1331 0 8 0 namei 1024 129091 0 129091 10 8 2 2 0 8 2 percpumem 16 723 0 671 1 0 1 1 0 8 0 kstatmem 264 728 0 690 7 3 4 4 0 8 1 acpiwqpl 32 2 0 2 1 0 1 1 1 8 1 scsiplug 72 33 0 33 14 13 1 1 0 8 1 scxspl 216 213677 0 213677 34 33 1 8 1 8 1 plimitpl 152 3615 0 3599 2 0 2 2 0 8 0 sigapl 424 10127 0 10074 7 0 7 7 0 8 0 knotepl 120 993 0 0 25 0 25 25 0 8 0 kqueuepl 224 4464 0 4456 42 37 5 6 0 8 4 pipepl 344 1548 0 1521 36 33 3 9 0 8 0 fdescpl 528 10076 0 10047 3 0 3 3 0 8 0 filepl 160 80391 0 80049 94 74 20 24 0 8 4 lockfpl 104 4546 0 4545 6 5 1 2 0 8 0 lockfspl 48 1477 0 1476 1 0 1 1 0 8 0 sessionpl 144 76 0 68 1 0 1 1 0 8 0 pgrppl 48 330 0 314 1 0 1 1 0 8 0 ucredpl 104 15090 0 15077 1 0 1 1 0 8 0 zombiepl 144 10695 0 10690 1 0 1 1 0 8 0 processpl 1232 10127 0 10074 5 0 5 5 0 8 0 procpl 664 26127 0 26069 9 2 7 7 0 8 0 sosppl 168 86 0 86 16 16 0 1 0 8 0 sockpl 752 23590 0 23438 257 234 23 37 0 8 7 mcl64k 65536 37 0 0 4 0 4 4 0 8 0 mcl16k 16384 8 0 0 1 0 1 1 0 8 0 mcl12k 12288 9 0 0 1 0 1 1 0 8 0 mcl9k 9216 4 0 0 1 0 1 1 0 8 0 mcl8k 8192 35 0 0 5 2 3 5 0 8 0 mcl4k 4096 194 0 0 18 0 18 18 0 8 0 mcl2k2 2112 1 0 0 1 0 1 1 0 8 0 mcl2k 2048 145 0 0 10 3 7 8 0 8 0 mtagpl 96 5 0 0 1 0 1 1 0 8 0 mbufpl 256 1405 0 0 73 0 73 73 0 8 0 bufpl 280 84696 0 78553 440 0 440 440 0 8 0 anonpl 32 14139 0 0 113 0 113 113 0 246 0 amapchunkpl 152 317633 0 317099 112 87 25 40 0 158 1 amappl16 200 30638 0 30600 155 138 17 34 0 8 2 amappl15 192 16 0 16 5 5 0 1 0 8 0 amappl14 184 221 0 212 1 0 1 1 0 8 0 amappl13 176 4 0 4 2 2 0 1 0 8 0 amappl12 168 11145 0 11117 3 1 2 2 0 8 0 amappl11 160 49 0 41 1 0 1 1 0 8 0 amappl10 152 7 0 6 2 1 1 1 0 8 0 amappl9 144 255 0 255 1 1 0 1 0 8 0 amappl8 136 21 0 18 1 0 1 1 0 8 0 amappl7 128 217 0 207 1 0 1 1 0 8 0 amappl6 120 449 0 445 1 0 1 1 0 8 0 amappl5 112 226 0 219 1 0 1 1 0 8 0 amappl4 104 449 0 429 1 0 1 1 0 8 0 amappl3 96 66041 0 65926 4 0 4 4 0 8 0 amappl2 88 1250 0 1196 2 0 2 2 0 8 0 amappl1 80 55030 0 54519 20 7 13 17 0 8 0 amappl 88 84591 0 84415 5 0 5 5 0 92 0 dma32768 32768 1 0 1 1 0 1 1 0 8 1 dma16384 16384 1 0 1 1 1 0 1 0 8 0 dma8192 8192 1 0 1 1 1 0 1 0 8 0 dma4096 4096 1 0 1 1 1 0 1 0 8 0 dma2048 2048 3 0 3 3 3 0 1 0 8 0 dma1024 1024 2 0 1 1 0 1 1 0 8 0 dma512 512 2 0 2 2 2 0 1 0 8 0 dma256 256 8 0 8 2 2 0 1 0 8 0 dma128 128 263 0 263 7 6 1 1 0 8 1 dma64 64 9 0 9 4 4 0 1 0 8 0 dma32 32 8 0 8 2 2 0 1 0 8 0 dma16 16 25 0 24 1 0 1 1 0 8 0 aobjpl 72 115 0 8 2 0 2 2 0 8 0 uaddrrnd 24 10076 0 10047 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 10076 0 10047 1 0 1 1 0 8 0 vmmpekpl 168 68923 0 68859 4 0 4 4 0 8 0 vmmpepl 168 627279 0 625489 174 80 94 119 0 357 0 vmsppl 488 10075 0 10047 6 1 5 5 0 8 0 rwobjpl 80 173018 0 148128 515 2 513 513 0 8 0 pdppl 4096 20160 0 20094 188 122 66 88 0 8 0 pvpl 32 23362 0 0 189 3 186 186 0 265 0 pmappl 256 10075 0 10047 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 651 0 261 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: 0x7d6f4adbcb90, 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_write_1(3f8,0,a) at x86_bus_space_io_write_1+0x40 sys/arch/amd64/amd64/bus_space.c:782 comcnputc(800,a) at comcnputc+0x1ab bus_space_barrier sys/dev/ic/com.c:-1 [inline] comcnputc(800,a) at comcnputc+0x1ab sys/dev/ic/com.c:1263 cnputc(a) at cnputc+0x67 sys/dev/cons.c:218 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(ffffffff83313d4b) at db_printf+0x9b sys/kern/subr_prf.c:-1 fault(ffffffff833d39fb) at fault+0xa7 sys/arch/amd64/amd64/trap.c:161 kpageflttrap(ffff80002a3c9230,0) at kpageflttrap+0x37d sys/arch/amd64/amd64/trap.c:296 kerntrap(ffff80002a3c9230) at kerntrap+0x198 sys/arch/amd64/amd64/trap.c:489 alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b dt_ioctl_record_stop(ffff8000015b1000) at dt_ioctl_record_stop+0x108 sys/dev/dt/dt_dev.c:586 end trace frame: 0xffff80002a3c9360, 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_write_1(3f8,0,a) at x86_bus_space_io_write_1+0x40 sys/arch/amd64/amd64/bus_space.c:782 comcnputc(800,a) at comcnputc+0x1ab bus_space_barrier sys/dev/ic/com.c:-1 [inline] comcnputc(800,a) at comcnputc+0x1ab sys/dev/ic/com.c:1263 cnputc(a) at cnputc+0x67 sys/dev/cons.c:218 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(ffffffff83313d4b) at db_printf+0x9b sys/kern/subr_prf.c:-1 fault(ffffffff833d39fb) at fault+0xa7 sys/arch/amd64/amd64/trap.c:161 kpageflttrap(ffff80002a3c9230,0) at kpageflttrap+0x37d sys/arch/amd64/amd64/trap.c:296 kerntrap(ffff80002a3c9230) at kerntrap+0x198 sys/arch/amd64/amd64/trap.c:489 alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b dt_ioctl_record_stop(ffff8000015b1000) at dt_ioctl_record_stop+0x108 sys/dev/dt/dt_dev.c:586 dtclose(21e5f,81,2000,ffff80002fc01a30) at dtclose+0x109 dt_pcb_purge sys/dev/dt/dt_dev.c:-1 [inline] dtclose(21e5f,81,2000,ffff80002fc01a30) at dtclose+0x109 sys/dev/dt/dt_dev.c:232 spec_close(ffff80002a3c93e0) at spec_close+0x466 sys/kern/spec_vnops.c:-1 VOP_CLOSE(fffffd800b762b10,81,fffffd80097fb478,ffff80002fc01a30) at VOP_CLOSE+0x132 sys/kern/vfs_vops.c:156 vn_closefile(fffffd807298ecf8,ffff80002fc01a30) at vn_closefile+0x12b vn_close sys/kern/vfs_vnops.c:292 [inline] vn_closefile(fffffd807298ecf8,ffff80002fc01a30) at vn_closefile+0x12b sys/kern/vfs_vnops.c:615 fdrop(fffffd807298ecf8,ffff80002fc01a30) at fdrop+0x121 sys/kern/kern_descrip.c:1280 closef(fffffd807298ecf8,ffff80002fc01a30) at closef+0x192 sys/kern/kern_descrip.c:1264 fdfree(ffff80002fc01a30) at fdfree+0x116 sys/kern/kern_descrip.c:1195 exit1(ffff80002fc01a30,0,0,1) at exit1+0x576 sys/kern/kern_exit.c:215 sys_exit(ffff80002fc01a30,ffff80002a3c9750,ffff80002a3c96a0) at sys_exit+0x1a sys/kern/kern_exit.c:-1 syscall(ffff80002a3c9750) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80002a3c9750) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:746 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7284361add10, count: -25