*cpu0: uvm_fault(0xfffffd800b0631e8, 0x20, 0, 1) -> e ddb{1}> trace proc_trampoline() at proc_trampoline+0xc7 end of kernel end trace frame: 0x755e2e0d7a40, count: -1 ddb{1}> show registers rdi 0 rsi 0 rbp 0xffff80002a30e7a0 rbx 0 rdx 0 rcx 0xffff800037be0fd0 rax 0x2a r8 0xffff80002a30e6d0 r9 0 r10 0x171a6b57f9bf0f72 r11 0x33d46aa6a85afe77 r12 0 r13 0 r14 0 r15 0 rip 0xffffffff82fec4c7 proc_trampoline+0xc7 cs 0x8 rflags 0x246 rsp 0xffff80002a30e720 ss 0 proc_trampoline+0xc7: movl $0,%gs:0x688 ddb{1}> show proc PROC (syz-executor) tid=249897 pid=10572 tcnt=1 stat=onproc flags process=0 proc=0 runpri=83, usrpri=83, slppri=17, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff8000ffffd9f8,0xffffffff838d3288 process=0xffff80003c4cc500 user=0xffff80002a309000, vmspace=0xfffffd806c8af208 estcpu=36, cpticks=1, pctcpu=0.0, user=0, sys=1, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND *10572 249897 40326 0 7 0 syz-executor 47263 404674 93342 0 2 0 syz-executor 47263 68036 93342 0 3 0x4000080 fsleep syz-executor 47263 223010 93342 0 3 0x4000080 fsleep syz-executor 47263 351682 93342 0 2 0x4000000 syz-executor 42236 273845 2394 0 2 0 syz-executor 42236 483351 2394 0 7 0x4000000 syz-executor 42236 242540 2394 0 3 0x4000080 fsleep syz-executor 88260 329560 31419 0 2 0x1 syz-executor 88260 333287 31419 0 3 0x4000080 kqsel syz-executor 88260 21933 31419 0 3 0x4000080 fsleep syz-executor 67445 85424 57678 0 3 0x3000 suspend syz-executor 67445 294555 57678 0 2 0x4081000 syz-executor 67445 404645 57678 0 3 0x4081000 inode syz-executor 67445 153069 57678 0 3 0x4081000 inode syz-executor 51714 450873 0 0 3 0x14200 acct acct 93342 491274 13676 0 3 0x82 nanoslp syz-executor 31419 206553 13676 0 3 0x82 nanoslp syz-executor 57678 286427 13676 0 3 0x82 nanoslp syz-executor 6321 195205 13676 0 3 0x82 nanoslp syz-executor 6528 350528 13676 0 2 0x2 syz-executor 99301 225031 13676 0 3 0x82 nanoslp syz-executor 40326 262508 13676 0 3 0x82 nanoslp syz-executor 91402 291862 1 0 3 0x100083 ttyin getty 2394 450686 13676 0 3 0x82 nanoslp syz-executor 13676 115943 76480 0 3 0x82 kqread syz-executor 76480 15858 43004 0 3 0x10008a sigsusp ksh 43004 150311 17751 0 3 0x98 kqread sshd-session 17751 411424 61596 0 3 0x92 kqread sshd-session 61596 80456 1 0 3 0x88 kqread sshd 14057 57220 97747 74 3 0x1100092 bpf pflogd 97747 387077 1 0 3 0x80 sbwait pflogd 4966 437708 49736 73 3 0x1100090 kqread syslogd 49736 131134 1 0 3 0x100082 sbwait syslogd 25304 102458 1 0 3 0x100080 kqread resolvd 91383 352798 99868 77 3 0x100092 kqread dhcpleased 25248 225104 99868 77 3 0x100092 kqread dhcpleased 99868 145814 1 0 3 0x80 kqread dhcpleased 62347 271011 0 0 3 0x14200 bored smr 46212 201457 0 0 2 0x14200 zerothread 65976 41863 0 0 3 0x14200 aiodoned aiodoned 50416 366309 0 0 3 0x14200 syncer update 71700 17803 0 0 3 0x14200 cleaner cleaner 1315 1424 0 0 3 0x14200 reaper reaper 42793 34434 0 0 3 0x14200 pgdaemon pagedaemon 56290 403331 0 0 3 0x14200 bored viomb 47057 84378 0 0 3 0x40014200 acpi0 acpi0 66505 80668 0 0 3 0x40014200 idle1 80560 87413 0 0 3 0x14200 bored softnet1 42107 410633 0 0 3 0x14200 bored softnet0 24853 365100 0 0 3 0x14200 bored systqmp 27042 147918 0 0 3 0x14200 bored systq 5295 337543 0 0 3 0x14200 tmoslp softclockmp 23317 364433 0 0 3 0x40014200 tmoslp softclock 86101 171572 0 0 3 0x40014200 idle0 1 38845 0 0 3 0x80082 wait init 0 0 -1 0 3 0x10010200 scheduler swapper ddb{1}> show all locks CPU 1: exclusive mutex amappl3 r = 0 (0xffffffff83988648) #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 pool_get+0x124 sys/kern/subr_pool.c:585 #3 amap_alloc1+0x1b2 sys/uvm/uvm_amap.c:-1 #4 amap_copy+0x24b sys/uvm/uvm_amap.c:-1 #5 uvm_fault_check+0x473 sys/uvm/uvm_fault.c:747 #6 uvm_fault+0x106 sys/uvm/uvm_fault.c:627 #7 upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:192 #8 usertrap+0x42f sys/arch/amd64/amd64/trap.c:632 #9 recall_trap+0x8 Process 10572 (syz-executor) thread 0xffff800037be0fd0 (249897) Process 47263 (syz-executor) thread 0xffff8000ffffd9f8 (351682) Process 42236 (syz-executor) thread 0xffff80003c426038 (483351) Process 67445 (syz-executor) thread 0xffff80003c4262d0 (294555) Process 67445 (syz-executor) thread 0xffff80003c426568 (404645) Process 6528 (syz-executor) thread 0xffff8000ffffc538 (350528) ddb{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 11121 12179K 16309K 166960K 20085 0 pcb 18 18K 20K 166960K 2199 0 rtable 218 20K 22K 166960K 2374 0 pf 38 18K 83K 166960K 1054 0 ifaddr 31 8K 12K 166960K 623 0 ifgroup 46 2K 3K 166960K 1130 0 sysctl 4 1K 9K 166960K 57 0 counters 70 36K 38K 166960K 1420 0 ioctlops 0 0K 8K 166960K 3764 0 iov 0 0K 28K 166960K 848 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1505 95K 95K 166960K 8869 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 2K 5K 166960K 19 0 VM map 2 1K 1K 166960K 2 0 sem 12 1K 1K 166960K 461 0 dirhash 12 2K 2K 166960K 147 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 17 61K 236K 166960K 8699 0 sigio 0 0K 0K 166960K 225 0 proc 79 131K 164K 166960K 2382 0 subproc 72 4K 4K 166960K 415 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 1443 0 in_multi 43 3K 7K 166960K 885 0 ether_multi 1 0K 0K 166960K 110 0 mrt 1 0K 0K 166960K 55 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 277 1235K 1235K 166960K 277 0 exec 0 0K 1K 166960K 2169 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 261 177K 210K 166960K 78170 0 UVM aobj 42 42K 44K 166960K 66 0 pinsyscall 42 84K 102K 166960K 10955 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 1K 166960K 849 0 NDP 11 0K 2K 166960K 492 0 temp 91 8688K 8944K 166960K 440425 0 kqueue 13 20K 36K 166960K 1673 0 SYN cache 2 8K 16K 166960K 3 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 1021 0 1018 11 10 1 3 0 8 0 rtentry 176 735 0 676 6 1 5 6 0 8 0 unpcb 144 6623 0 6601 50 44 6 6 0 8 5 syncache 336 48 0 48 17 17 0 1 0 8 0 tcpqe 32 61 0 61 12 12 0 1 0 8 0 tcpcb 736 3427 0 3382 57 52 5 8 0 8 0 arp 136 121 0 107 1 0 1 1 0 8 0 inpcb 328 11289 0 11238 73 68 5 13 0 8 0 nd6 152 182 0 172 2 1 1 2 0 8 0 pkpcb 40 53 0 53 17 16 1 1 0 8 1 kcovpl 48 46 0 38 1 0 1 1 0 8 0 mppekey 1024 10 0 9 8 7 1 1 0 8 0 ppxss 1192 546 0 544 10 9 1 1 0 8 0 pppxif 1504 46 0 46 15 15 0 1 0 8 0 pfstscr 40 4 0 4 4 4 0 1 0 8 0 pffrag 232 81 0 65 3 1 2 2 0 482 0 pffrnode 88 71 0 58 1 0 1 1 0 8 0 pffrent 40 282 0 266 2 1 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 20 0 16 3 2 1 1 0 8 0 pfanchor 1288 5 0 0 1 0 1 1 0 8 0 pftag 88 1 0 0 1 0 1 1 0 8 0 pfstitem 24 2 0 0 1 0 1 1 0 8 0 pfstkey 128 14 0 12 3 2 1 1 0 8 0 pfstate 448 7 0 6 3 2 1 1 0 8 0 pfrule 1360 20 0 16 3 2 1 1 0 8 0 rttmr 136 9 0 9 6 6 0 1 0 8 0 art_heap8 4096 7 0 3 7 3 4 5 0 8 0 art_heap4 256 3149 0 2929 56 32 24 40 0 8 5 art_table 40 3156 0 2932 7 0 7 7 0 8 0 art_node 32 728 0 678 1 0 1 1 0 8 0 sysvmsgpl 40 22 0 11 1 0 1 1 0 8 0 semupl 112 6 0 6 5 5 0 1 0 8 0 semapl 112 449 0 439 1 0 1 1 0 8 0 shmpl 112 23 0 3 1 0 1 1 0 8 0 dirhash 1024 108 0 91 3 0 3 3 0 8 0 dino2pl 256 18210 0 16622 100 0 100 100 0 8 0 ffsino 296 18210 0 16622 123 0 123 123 0 8 0 nchpl 144 29769 0 27949 68 0 68 68 0 8 0 rtmask 32 85 0 85 15 14 1 1 0 8 1 vnodes 216 5926 0 0 330 0 330 330 0 8 0 namei 1024 107903 0 107902 8 7 1 2 0 8 0 percpumem 16 725 0 675 1 0 1 1 0 8 0 vcpupl 3968 23 0 4 3 0 3 3 0 8 0 vmpool 848 36 0 17 5 2 3 3 0 8 0 pfiaddrpl 120 2 0 0 1 0 1 1 0 8 0 kstatmem 264 788 0 760 9 6 3 3 0 8 0 acpiwqpl 32 1 0 1 1 0 1 1 1 8 1 scsiplug 72 49 0 49 15 15 0 1 0 8 0 scxspl 216 236119 0 236119 36 34 2 8 1 8 2 plimitpl 152 2793 0 2773 1 0 1 1 0 8 0 sigapl 424 8995 0 8947 10 3 7 9 0 8 0 knotepl 120 989 0 0 25 0 25 25 0 8 0 kqueuepl 224 3427 0 3417 35 33 2 5 0 8 1 pipepl 344 1825 0 1798 38 35 3 11 0 8 0 fdescpl 528 8913 0 8882 3 0 3 3 0 8 0 filepl 160 67072 0 66808 70 54 16 22 0 8 2 lockfpl 104 3179 0 3177 4 3 1 2 0 8 0 lockfspl 48 1194 0 1192 1 0 1 1 0 8 0 sessionpl 144 97 0 88 1 0 1 1 0 8 0 pgrppl 48 282 0 265 1 0 1 1 0 8 0 ucredpl 104 11341 0 11327 1 0 1 1 0 8 0 zombiepl 144 10339 0 10336 3 2 1 1 0 8 0 processpl 1232 8995 0 8947 7 2 5 6 0 8 0 procpl 664 23039 0 22981 10 4 6 8 0 8 0 sosppl 176 70 0 70 12 11 1 1 0 8 1 sockpl 752 19312 0 19236 153 136 17 21 0 8 8 mcl64k 65536 12 0 0 2 0 2 2 0 8 0 mcl16k 16384 6 0 0 1 0 1 1 0 8 0 mcl12k 12288 3 0 0 1 0 1 1 0 8 0 mcl9k 9216 5 0 0 1 0 1 1 0 8 0 mcl8k 8192 6 0 0 1 0 1 1 0 8 0 mcl4k 4096 111 0 0 14 0 14 14 0 8 0 mcl2k2 2112 1 0 0 1 0 1 1 0 8 0 mcl2k 2048 87 0 0 5 0 5 5 0 8 0 mtagpl 96 11 0 0 1 0 1 1 0 8 0 mbufpl 256 2041 0 0 115 0 115 115 0 8 0 bufpl 280 99476 0 93340 439 0 439 439 0 8 0 anonpl 32 25442 0 0 204 0 204 204 0 246 0 amapchunkpl 152 291041 0 290376 129 92 37 43 0 158 5 amappl16 200 34907 0 34132 140 84 56 61 0 8 0 amappl15 192 7 0 7 1 1 0 1 0 8 0 amappl14 184 48 0 48 5 5 0 1 0 8 0 amappl13 176 885 0 884 1 0 1 1 0 8 0 amappl12 168 9619 0 9576 3 0 3 3 0 8 0 amappl11 160 8 0 8 3 3 0 1 0 8 0 amappl10 152 52 0 38 1 0 1 1 0 8 0 amappl9 144 249 0 247 2 1 1 1 0 8 0 amappl8 136 45 0 42 1 0 1 1 0 8 0 amappl7 128 247 0 244 1 0 1 1 0 8 0 amappl6 120 781 0 767 1 0 1 1 0 8 0 amappl5 112 110 0 99 1 0 1 1 0 8 0 amappl4 104 824 0 792 1 0 1 1 0 8 0 amappl3 96 49649 0 49554 5 1 4 4 0 8 0 amappl2 88 9196 0 9115 3 0 3 3 0 8 0 amappl1 80 56288 0 55700 20 4 16 18 0 8 0 amappl 88 75236 0 75056 6 0 6 6 0 92 0 uvmvnodes 80 307 0 0 7 0 7 7 0 8 0 dma65536 65536 4 0 4 4 4 0 1 0 8 0 dma16384 16384 4 0 4 3 3 0 1 0 8 0 dma8192 8192 3 0 3 2 2 0 1 0 8 0 dma4096 4096 2 0 2 2 2 0 1 0 8 0 dma2048 2048 2 0 2 2 2 0 1 0 8 0 dma1024 1024 1 0 0 1 0 1 1 0 8 0 dma256 256 10 0 10 5 5 0 1 0 8 0 dma128 128 267 0 267 11 11 0 1 0 8 0 dma64 64 9 0 9 3 3 0 1 0 8 0 dma32 32 7 0 7 1 1 0 1 0 8 0 dma16 16 21 0 20 1 0 1 1 0 8 0 aobjpl 72 65 0 24 1 0 1 1 0 8 0 uaddrrnd 24 8913 0 8882 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 8913 0 8882 1 0 1 1 0 8 0 vmmpekpl 168 64010 0 63938 5 1 4 4 0 8 0 vmmpepl 168 586511 0 583812 230 87 143 155 0 357 2 vmsppl 488 8912 0 8882 5 0 5 5 0 8 0 rwobjpl 80 148168 0 146123 65 14 51 51 0 8 0 pdppl 4096 17905 0 17817 194 104 90 95 0 8 2 pvpl 32 35870 0 0 287 0 287 287 0 265 0 pmappl 256 8948 0 8899 4 0 4 4 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 617 0 244 11 0 11 11 0 8 0 ddb{1}> machine ddbcpu 0 Stopped at x86_ipi_db+0x27: addq $0x8,%rsp x86_ipi_db(ffffffff83806ff0) 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,a) at comcnputc+0x250 comcn_read_reg sys/dev/ic/com.c:1655 [inline] comcnputc(800,a) at comcnputc+0x250 sys/dev/ic/com.c:1269 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+0x223 sys/kern/subr_prf.c:723 db_printf(ffffffff833537b3) at db_printf+0x9b sys/kern/subr_prf.c:-1 fault(ffffffff83411565) at fault+0xa7 sys/arch/amd64/amd64/trap.c:161 kpageflttrap(ffff80002a2f26a0,20) at kpageflttrap+0x37d sys/arch/amd64/amd64/trap.c:296 kerntrap(ffff80002a2f26a0) at kerntrap+0x19c sys/arch/amd64/amd64/trap.c:520 alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b mtx_enter(18) at mtx_enter+0x9e sys/kern/kern_lock.c:406 end trace frame: 0xffff80002a2f2810, count: 0 ddb{0}> trace x86_ipi_db(ffffffff83806ff0) 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,a) at comcnputc+0x250 comcn_read_reg sys/dev/ic/com.c:1655 [inline] comcnputc(800,a) at comcnputc+0x250 sys/dev/ic/com.c:1269 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+0x223 sys/kern/subr_prf.c:723 db_printf(ffffffff833537b3) at db_printf+0x9b sys/kern/subr_prf.c:-1 fault(ffffffff83411565) at fault+0xa7 sys/arch/amd64/amd64/trap.c:161 kpageflttrap(ffff80002a2f26a0,20) at kpageflttrap+0x37d sys/arch/amd64/amd64/trap.c:296 kerntrap(ffff80002a2f26a0) at kerntrap+0x19c sys/arch/amd64/amd64/trap.c:520 alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b mtx_enter(18) at mtx_enter+0x9e sys/kern/kern_lock.c:406 clockintr_unbind(ffff800001671930,1) at clockintr_unbind+0x56 sys/kern/kern_clockintr.c:375 dt_ioctl_record_stop(ffff800001737000) at dt_ioctl_record_stop+0xbc sys/dev/dt/dt_dev.c:589 dtclose(21e5f,81,2000,ffff80003c426038) at dtclose+0x109 dt_pcb_purge sys/dev/dt/dt_dev.c:-1 [inline] dtclose(21e5f,81,2000,ffff80003c426038) at dtclose+0x109 sys/dev/dt/dt_dev.c:239 spec_close(ffff80002a2f2920) at spec_close+0x466 sys/kern/spec_vnops.c:-1 VOP_CLOSE(fffffd8061fcb6d0,81,fffffd80097fd548,ffff80003c426038) at VOP_CLOSE+0x132 sys/kern/vfs_vops.c:156 vn_closefile(fffffd8072eed230,ffff80003c426038) at vn_closefile+0x12b vn_close sys/kern/vfs_vnops.c:292 [inline] vn_closefile(fffffd8072eed230,ffff80003c426038) at vn_closefile+0x12b sys/kern/vfs_vnops.c:615 fdrop(fffffd8072eed230,ffff80003c426038) at fdrop+0x121 sys/kern/kern_descrip.c:1280 closef(fffffd8072eed230,ffff80003c426038) at closef+0x192 sys/kern/kern_descrip.c:1264 syscall(ffff80002a2f2b80) at syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80002a2f2b80) at syscall+0xbd4 sys/arch/amd64/amd64/trap.c:775 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xf610af4e820, count: -24 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: 0x755e2e0d7a40, count: 14 ddb{1}> trace proc_trampoline() at proc_trampoline+0xc7 end of kernel end trace frame: 0x755e2e0d7a40, count: -1