*cpu1: uvm_fault(0xfffffd80652e17c0, 0x0, 0, 1) -> e ddb{0}> trace proc_trampoline() at proc_trampoline+0xc7 end of kernel end trace frame: 0x75deb55fa600, count: -1 ddb{0}> show registers rdi 0 rsi 0 rbp 0xffff80002a30ac60 rbx 0 rdx 0 rcx 0xffff80003c446a98 rax 0x2a r8 0xffff80002a30ab90 r9 0 r10 0x70509755d45a39a8 r11 0x38fef5baf80cbbbb r12 0x3 r13 0xffffffff829a8e18 Xdoreti+0x18 r14 0xffff8000002a3400 r15 0 rip 0xffffffff82df94c7 proc_trampoline+0xc7 cs 0x8 rflags 0x246 rsp 0xffff80002a30abe0 ss 0x10 proc_trampoline+0xc7: movl $0,%gs:0x688 ddb{0}> show proc PROC (syz-executor) tid=516735 pid=84334 tcnt=3 stat=onproc flags process=0 proc=0 runpri=86, usrpri=86, slppri=17, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff80003c447a28,0xffff80003c447cd0 process=0xffff8000fffef9d8 user=0xffff80002a305000, vmspace=0xfffffd80652e1d78 estcpu=36, cpticks=5, pctcpu=0.0, user=5, sys=0, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 78418 220907 8997 0 2 0 syz-executor 78418 267345 8997 0 2 0x4000000 syz-executor *84334 516735 63982 0 7 0 syz-executor 84334 365033 63982 0 3 0x4000080 netcon syz-executor 84334 126589 63982 0 2 0x4000000 syz-executor 78629 205936 6939 0 2 0x2 syz-executor 79560 386301 17660 0 3 0x80 nanoslp syz-executor 79560 156815 17660 0 3 0x4000080 ttyout syz-executor 54029 334208 41781 0 3 0x80 nanoslp syz-executor 54029 105352 41781 0 3 0x4000080 lockf syz-executor 54029 45183 41781 0 3 0x4000080 fsleep syz-executor 41781 266078 6939 0 3 0x82 nanoslp syz-executor 25909 275547 7663 0 3 0x3000 suspend syz-executor 25909 443823 7663 0 3 0x4081000 biowait syz-executor 57812 173279 6939 0 2 0x3 syz-executor 21501 438655 1 0 3 0x100083 ttyopn getty 8997 291365 6939 0 3 0x82 nanoslp syz-executor 63982 243438 6939 0 3 0x82 nanoslp syz-executor 7663 227664 6939 0 3 0x82 wait syz-executor 1078 499178 0 0 3 0x14280 nfsidl nfsio 6112 487986 0 0 3 0x14280 nfsidl nfsio 69455 251370 0 0 3 0x14280 nfsidl nfsio 36067 33084 0 0 3 0x14280 nfsidl nfsio 33316 319770 6939 0 3 0x82 nanoslp syz-executor 17660 500572 6939 0 3 0x82 nanoslp syz-executor 6939 29180 94783 0 3 0x82 kqread syz-executor 94783 77404 12344 0 3 0x10008a sigsusp ksh 12344 349906 24523 0 3 0x98 kqread sshd-session 24523 164350 36662 0 3 0x92 kqread sshd-session 36662 410173 1 0 3 0x88 kqread sshd 90683 127102 65289 74 3 0x1100092 bpf pflogd 65289 11147 1 0 3 0x80 sbwait pflogd 88080 399274 38150 73 3 0x1100090 kqread syslogd 38150 339269 1 0 3 0x100082 sbwait syslogd 80414 402329 1 0 3 0x100080 kqread resolvd 88554 40493 61577 77 3 0x100092 kqread dhcpleased 70687 386449 61577 77 3 0x100092 kqread dhcpleased 61577 15561 1 0 3 0x80 kqread dhcpleased 68196 152754 0 0 3 0x14200 bored smr 56842 63267 0 0 2 0x14200 zerothread 46409 179892 0 0 3 0x14200 aiodoned aiodoned 34660 378404 0 0 3 0x14200 syncer update 30405 376289 0 0 3 0x14200 cleaner cleaner 93789 519907 0 0 2 0x14200 reaper 95197 304834 0 0 3 0x14200 pgdaemon pagedaemon 3363 158300 0 0 3 0x14200 bored viomb 2719 420618 0 0 3 0x40014200 acpi0 acpi0 7926 156806 0 0 3 0x40014200 idle1 61327 439048 0 0 3 0x14200 bored softnet1 73838 263320 0 0 3 0x14200 bored softnet0 80833 238570 0 0 3 0x14200 bored systqmp 95941 400474 0 0 3 0x14200 bored systq 30933 31259 0 0 3 0x14200 tmoslp softclockmp 49122 88743 0 0 3 0x40014200 tmoslp softclock 2140 347656 0 0 3 0x40014200 idle0 1 34360 0 0 3 0x80082 wait init 0 0 -1 0 3 0x10010200 scheduler swapper ddb{0}> show all locks CPU 0: exclusive mutex &sched_lock r = 0 (0xffffffff8394ff08) #0 witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5f1 sys/kern/subr_witness.c:1160 #1 mtx_enter+0x4b4 sys/kern/kern_lock.c:487 #2 yield+0x35 sys/kern/sched_bsd.c:321 #3 pool_get+0x27e sys/kern/subr_pool.c:595 #4 uvm_mapent_alloc+0x354 sys/uvm/uvm_map.c:-1 #5 uvm_mapanon+0x272 sys/uvm/uvm_map.c:-1 #6 uvm_mmapanon+0x1d0 sys/uvm/uvm_mmap.c:1029 #7 sys_mmap+0xa80 sys/uvm/uvm_mmap.c:426 #8 syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline] #8 syscall+0xbd4 sys/arch/amd64/amd64/trap.c:775 #9 Xsyscall+0x128 Process 78629 (syz-executor) thread 0xffff80003c447a28 (205936) Process 25909 (syz-executor) thread 0xffff8000fffe8550 (443823) Process 93789 (reaper) thread 0xffff8000ffffd760 (519907) ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 11110 12175K 13956K 166960K 15735 0 pcb 17 16K 17K 166960K 924 0 rtable 261 17K 18K 166960K 1215 0 pf 42 19K 84K 166960K 459 0 ifaddr 36 7K 10K 166960K 300 0 ifgroup 58 2K 3K 166960K 527 0 sysctl 4 1K 9K 166960K 56 0 counters 70 37K 38K 166960K 596 0 ioctlops 0 0K 4K 166960K 2455 0 iov 0 0K 28K 166960K 299 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1487 94K 94K 166960K 4470 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 17K 166960K 50 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 0K 166960K 193 0 dirhash 12 2K 2K 166960K 72 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 16 57K 236K 166960K 3597 0 sigio 0 0K 0K 166960K 85 0 proc 72 115K 180K 166960K 1181 0 subproc 72 4K 4K 166960K 192 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 2 0K 0K 166960K 458 0 in_multi 81 5K 7K 166960K 426 0 ether_multi 1 0K 0K 166960K 44 0 mrt 1 0K 0K 166960K 28 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 1434 0 fusefs mount 1 32K 32K 166960K 1 0 pfkey data 0 0K 0K 166960K 7 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 242 144K 174K 166960K 34832 0 UVM aobj 20 20K 22K 166960K 89 0 pinsyscall 41 82K 106K 166960K 5041 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 1K 166960K 360 0 NDP 12 0K 2K 166960K 233 0 temp 81 8684K 8940K 166960K 196733 0 kqueue 13 20K 33K 166960K 727 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 120 555 0 552 7 5 2 3 0 8 1 rtentry 176 362 0 270 6 0 6 6 0 8 0 unpcb 144 2353 0 2333 14 12 2 6 0 8 1 syncache 336 8 0 8 5 5 0 1 0 8 0 tcpqe 32 5 0 5 3 3 0 1 0 8 0 tcpcb 736 1330 0 1321 27 23 4 13 0 8 2 arp 136 59 0 42 1 0 1 1 0 8 0 inpcb 328 4609 0 4593 46 40 6 13 0 8 4 ip6q 72 2 0 2 2 2 0 1 0 8 0 ip6af 40 4 0 4 2 2 0 1 0 8 0 nd6 152 73 0 47 2 0 2 2 0 8 1 pkpcb 40 120 0 120 5 4 1 1 0 8 1 kcovpl 48 20 0 13 1 0 1 1 0 8 0 ppxss 1192 212 0 212 3 2 1 1 0 8 1 pppxif 1504 19 0 19 7 6 1 1 0 8 1 pffrag 232 26 0 13 1 0 1 1 0 482 0 pffrnode 88 20 0 8 1 0 1 1 0 8 0 pffrent 40 82 0 68 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 48 0 42 1 0 1 1 0 8 0 pfanchor 1288 5 0 2 1 0 1 1 0 8 0 pftag 88 2 0 0 1 0 1 1 0 8 0 pfrule 1360 7 0 3 1 0 1 1 0 8 0 rttmr 136 5 0 5 3 3 0 1 0 8 0 art_heap8 4096 4 0 0 4 0 4 4 0 8 0 art_heap4 256 1657 0 1223 41 11 30 31 0 8 2 art_table 40 1661 0 1223 5 0 5 5 0 8 0 art_node 32 357 0 277 1 0 1 1 0 8 0 sysvmsgpl 40 21 0 10 1 0 1 1 0 8 0 semupl 112 2 0 2 1 1 0 1 0 8 0 semapl 112 187 0 177 1 0 1 1 0 8 0 shmpl 112 8 0 0 1 0 1 1 0 8 0 dirhash 1024 57 0 40 3 0 3 3 0 8 0 dino2pl 256 8280 0 6744 97 0 97 97 0 8 0 ffsino 296 8280 0 6744 119 0 119 119 0 8 0 nchpl 144 13280 0 11526 66 0 66 66 0 8 0 rtmask 32 39 0 39 7 6 1 1 0 8 1 vnodes 216 5926 0 0 330 0 330 330 0 8 0 namei 1024 48182 0 48182 7 6 1 2 0 8 1 percpumem 16 313 0 263 1 0 1 1 0 8 0 vcpupl 3968 9 0 0 2 0 2 2 0 8 0 vmpool 848 77 0 68 2 1 1 2 0 8 0 pfiaddrpl 120 2 0 0 1 0 1 1 0 8 0 kstatmem 264 368 0 340 4 1 3 3 0 8 0 acpiwqpl 32 1 0 1 1 0 1 1 1 8 1 scsiplug 72 11 0 11 6 5 1 1 0 8 1 scxspl 216 83392 0 83391 23 21 2 8 1 8 1 plimitpl 152 1203 0 1185 1 0 1 1 0 8 0 sigapl 424 3915 0 3865 9 1 8 8 0 8 0 knotepl 120 860 0 0 24 0 24 24 0 8 0 kqueuepl 224 1535 0 1525 18 13 5 5 0 8 4 pipepl 344 618 0 591 16 13 3 9 0 8 0 fdescpl 528 3850 0 3820 3 0 3 3 0 8 0 filepl 160 27937 0 27708 41 24 17 17 0 8 4 lockfpl 104 1662 0 1657 2 1 1 2 0 8 0 lockfspl 48 625 0 622 1 0 1 1 0 8 0 sessionpl 144 40 0 31 1 0 1 1 0 8 0 pgrppl 48 125 0 108 1 0 1 1 0 8 0 ucredpl 104 4660 0 4647 1 0 1 1 0 8 0 zombiepl 144 4534 0 4532 3 2 1 1 0 8 0 processpl 1232 3915 0 3865 7 1 6 6 0 8 0 procpl 664 9952 0 9893 9 2 7 8 0 8 0 sosppl 176 31 0 31 7 7 0 1 0 8 0 sockpl 752 7808 0 7769 69 58 11 18 0 8 6 mcl64k 65536 7 0 0 1 0 1 1 0 8 0 mcl16k 16384 10 0 0 2 0 2 2 0 8 0 mcl12k 12288 1 0 0 1 0 1 1 0 8 0 mcl9k 9216 1 0 0 1 0 1 1 0 8 0 mcl8k 8192 4 0 0 1 0 1 1 0 8 0 mcl4k 4096 133 0 0 17 1 16 17 0 8 0 mcl2k2 2112 2 0 0 1 0 1 1 0 8 0 mcl2k 2048 44 0 0 5 0 5 5 0 8 0 mtagpl 96 8 0 0 1 0 1 1 0 8 0 mbufpl 256 1783 0 0 112 0 112 112 0 8 0 bufpl 280 33958 0 27822 439 0 439 439 0 8 0 anonpl 32 15874 0 0 128 0 128 128 0 246 0 amapchunkpl 152 120625 0 120095 65 35 30 34 0 158 3 amappl16 200 13064 0 12792 97 60 37 37 0 8 18 amappl15 192 2 0 2 1 1 0 1 0 8 0 amappl14 184 11 0 11 2 2 0 1 0 8 0 amappl13 176 571 0 570 1 0 1 1 0 8 0 amappl12 168 4306 0 4264 3 0 3 3 0 8 0 amappl11 160 7 0 6 1 0 1 1 0 8 0 amappl10 152 55 0 39 1 0 1 1 0 8 0 amappl9 144 250 0 250 1 1 0 1 0 8 0 amappl8 136 26 0 23 1 0 1 1 0 8 0 amappl7 128 147 0 146 1 0 1 1 0 8 0 amappl6 120 432 0 418 1 0 1 1 0 8 0 amappl5 112 83 0 71 1 0 1 1 0 8 0 amappl4 104 503 0 474 1 0 1 1 0 8 0 amappl3 96 21445 0 21360 4 1 3 3 0 8 0 amappl2 88 3949 0 3873 2 0 2 2 0 8 0 amappl1 80 24612 0 24022 16 2 14 15 0 8 0 amappl 88 33324 0 33157 5 0 5 5 0 92 0 uvmvnodes 80 215 0 1 5 0 5 5 0 8 0 dma65536 65536 2 0 2 2 2 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 dma256 256 6 0 6 1 1 0 1 0 8 0 dma128 128 255 0 255 3 3 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 88 0 69 1 0 1 1 0 8 0 uaddrrnd 24 3850 0 3820 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 3850 0 3820 1 0 1 1 0 8 0 vmmpekpl 168 30101 0 30034 4 0 4 4 0 8 0 vmmpepl 168 244972 0 242854 160 44 116 116 0 357 5 vmsppl 488 3849 0 3820 6 1 5 5 0 8 0 rwobjpl 80 63482 0 62080 45 7 38 38 0 8 2 pdppl 4096 7861 0 7785 132 50 82 87 0 8 6 pvpl 32 22298 0 0 179 0 179 179 0 265 0 pmappl 256 3926 0 3888 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 463 0 100 11 0 11 11 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: 0x75deb55fa600, 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_1(3f8,5) at x86_bus_space_io_read_1+0x37 sys/arch/amd64/amd64/bus_space.c:670 comcnputc(800,20) at comcnputc+0x250 comcn_read_reg sys/dev/ic/com.c:1655 [inline] comcnputc(800,20) at comcnputc+0x250 sys/dev/ic/com.c:1269 cnputc(20) at cnputc+0x67 sys/dev/cons.c:218 db_putchar(65) at db_putchar+0x126 db_force_whitespace sys/ddb/db_output.c:102 [inline] db_putchar(65) at db_putchar+0x126 sys/ddb/db_output.c:153 kprintf() at kprintf+0x29c5 sys/kern/subr_prf.c:-1 db_printf(ffffffff833520bf) at db_printf+0x9b sys/kern/subr_prf.c:-1 fault(ffffffff83414993) at fault+0xa7 sys/arch/amd64/amd64/trap.c:161 kpageflttrap(ffff80002a3687c0,0) at kpageflttrap+0x37d sys/arch/amd64/amd64/trap.c:296 kerntrap(ffff80002a3687c0) at kerntrap+0x19c sys/arch/amd64/amd64/trap.c:520 alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b dt_ioctl_record_stop(ffff80000173b000) at dt_ioctl_record_stop+0x108 sys/dev/dt/dt_dev.c:593 end trace frame: 0xffff80002a3688f0, 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_1(3f8,5) at x86_bus_space_io_read_1+0x37 sys/arch/amd64/amd64/bus_space.c:670 comcnputc(800,20) at comcnputc+0x250 comcn_read_reg sys/dev/ic/com.c:1655 [inline] comcnputc(800,20) at comcnputc+0x250 sys/dev/ic/com.c:1269 cnputc(20) at cnputc+0x67 sys/dev/cons.c:218 db_putchar(65) at db_putchar+0x126 db_force_whitespace sys/ddb/db_output.c:102 [inline] db_putchar(65) at db_putchar+0x126 sys/ddb/db_output.c:153 kprintf() at kprintf+0x29c5 sys/kern/subr_prf.c:-1 db_printf(ffffffff833520bf) at db_printf+0x9b sys/kern/subr_prf.c:-1 fault(ffffffff83414993) at fault+0xa7 sys/arch/amd64/amd64/trap.c:161 kpageflttrap(ffff80002a3687c0,0) at kpageflttrap+0x37d sys/arch/amd64/amd64/trap.c:296 kerntrap(ffff80002a3687c0) at kerntrap+0x19c sys/arch/amd64/amd64/trap.c:520 alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b dt_ioctl_record_stop(ffff80000173b000) at dt_ioctl_record_stop+0x108 sys/dev/dt/dt_dev.c:593 dtclose(11e5f,1,2000,ffff80003c46e570) at dtclose+0x109 dt_pcb_purge sys/dev/dt/dt_dev.c:-1 [inline] dtclose(11e5f,1,2000,ffff80003c46e570) at dtclose+0x109 sys/dev/dt/dt_dev.c:239 spec_close(ffff80002a368970) at spec_close+0x466 sys/kern/spec_vnops.c:-1 VOP_CLOSE(fffffd805f130a28,1,fffffd80097fd5b0,ffff80003c46e570) at VOP_CLOSE+0x132 sys/kern/vfs_vops.c:156 vn_closefile(fffffd806d027980,ffff80003c46e570) at vn_closefile+0x12b vn_close sys/kern/vfs_vnops.c:292 [inline] vn_closefile(fffffd806d027980,ffff80003c46e570) at vn_closefile+0x12b sys/kern/vfs_vnops.c:615 fdrop(fffffd806d027980,ffff80003c46e570) at fdrop+0x121 sys/kern/kern_descrip.c:1280 closef(fffffd806d027980,ffff80003c46e570) at closef+0x192 sys/kern/kern_descrip.c:1264 fdfree(ffff80003c46e570) at fdfree+0x116 sys/kern/kern_descrip.c:1195 exit1(ffff80003c46e570,0,0,1) at exit1+0x576 sys/kern/kern_exit.c:215 sys_exit(ffff80003c46e570,ffff80002a368ce0,ffff80002a368c30) at sys_exit+0x1a sys/kern/kern_exit.c:-1 syscall(ffff80002a368ce0) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80002a368ce0) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:775 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x738637b7ece0, count: -25