*cpu1: uvm_fault(0xfffffd80643173f8, 0x0, 0, 1) -> e ddb{0}> trace proc_trampoline() at proc_trampoline+0xc7 end of kernel end trace frame: 0x7a939cce6690, count: -1 ddb{0}> show registers rdi 0 rsi 0 rbp 0xffff80003a033d30 rbx 0 rdx 0 rcx 0xffff80003c4b2aa0 rax 0x2a r8 0xffff80003a033c60 r9 0x7a939cce6001 r10 0xb522f2cf6c6917e5 r11 0x8e3ae336894d58ef r12 0 r13 0 r14 0 r15 0 rip 0xffffffff824204c7 proc_trampoline+0xc7 cs 0x8 rflags 0x246 rsp 0xffff80003a033cb0 ss 0 proc_trampoline+0xc7: movl $0,%gs:0x688 ddb{0}> show proc PROC (syz-executor) tid=450931 pid=90197 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=0xffff800035c0ed28,0xffff80003c4b37a8 process=0xffff80003c4da1d8 user=0xffff80003a02e000, vmspace=0xfffffd8064317210 estcpu=36, cpticks=0, pctcpu=0.0, user=0, sys=0, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND *90197 450931 49518 0 7 0 syz-executor 50561 213949 61577 0 2 0 syz-executor 50561 40137 61577 0 2 0x4000000 syz-executor 5269 72621 43760 0 2 0 syz-executor 5269 293691 43760 0 2 0x4000000 syz-executor 12929 371061 0 0 3 0x14200 acct acct 43921 446582 54547 -1 2 0x10 syz-executor 43921 477232 54547 -1 3 0x4000090 fsleep syz-executor 42411 380613 57967 0 3 0x80 nanoslp syz-executor 42411 254689 57967 0 3 0x4000080 fsleep syz-executor 42411 18959 57967 0 3 0x4000080 ttyout syz-executor 42411 454287 57967 0 3 0x4000080 fsleep syz-executor 33056 160674 13515 0 2 0 syz-executor 33056 134622 13515 0 3 0x4000080 kqpoll syz-executor 33056 345887 13515 0 3 0x4000080 fsleep syz-executor 28942 256992 11078 0 2 0 syz-executor 28942 146740 11078 0 3 0x4000080 fsleep syz-executor 28942 440764 11078 0 3 0x4000080 lockf syz-executor 13515 505555 49171 0 3 0x82 nanoslp syz-executor 78765 338364 1 0 3 0x100083 ttyopn getty 64287 139129 0 0 3 0x14200 bored sosplice 49518 39003 49171 0 3 0x82 nanoslp syz-executor 57967 144375 49171 0 3 0x82 nanoslp syz-executor 62758 291751 49171 0 2 0x2 syz-executor 11078 207207 49171 0 3 0x82 nanoslp syz-executor 54547 251262 49171 0 3 0x82 nanoslp syz-executor 43760 53729 49171 0 3 0x82 nanoslp syz-executor 61577 499683 49171 0 3 0x82 nanoslp syz-executor 49171 122287 38075 0 3 0x82 kqread syz-executor 38075 454894 49813 0 3 0x10008a sigsusp ksh 49813 78069 75786 0 3 0x98 kqread sshd-session 75786 24079 77270 0 3 0x92 kqread sshd-session 77270 44248 1 0 3 0x88 kqread sshd 31562 331418 23613 74 3 0x1100092 bpf pflogd 23613 391986 1 0 3 0x80 sbwait pflogd 54049 372652 15347 73 3 0x1100090 kqread syslogd 15347 164679 1 0 3 0x100082 sbwait syslogd 70808 256548 1 0 3 0x100080 kqread resolvd 69591 293972 50716 77 3 0x100092 kqread dhcpleased 68242 506717 50716 77 3 0x100092 kqread dhcpleased 50716 168069 1 0 3 0x80 kqread dhcpleased 74224 176050 0 0 3 0x14200 bored smr 61644 42753 0 0 2 0x14200 zerothread 44806 417222 0 0 3 0x14200 aiodoned aiodoned 78474 422628 0 0 3 0x14200 syncer update 89649 145680 0 0 3 0x14200 cleaner cleaner 30082 414733 0 0 3 0x14200 reaper reaper 29802 312667 0 0 3 0x14200 pgdaemon pagedaemon 26183 124987 0 0 3 0x14200 bored viomb 16023 431634 0 0 3 0x40014200 acpi0 acpi0 67076 493217 0 0 3 0x40014200 idle1 11523 59705 0 0 3 0x14200 bored softnet7 73339 122063 0 0 3 0x14200 bored softnet6 87053 154746 0 0 3 0x14200 bored softnet5 55340 247510 0 0 3 0x14200 bored softnet4 48982 60829 0 0 3 0x14200 bored softnet3 40226 335377 0 0 3 0x14200 bored softnet2 12475 314097 0 0 3 0x14200 bored softnet1 43112 196645 0 0 3 0x14200 bored softnet0 22836 31972 0 0 3 0x14200 bored systqmp 29377 219614 0 0 3 0x14200 bored systq 90038 301514 0 0 3 0x14200 tmoslp softclockmp 85358 390475 0 0 3 0x40014200 tmoslp softclock 98983 464451 0 0 3 0x40014200 idle0 1 503555 0 0 3 0x82 wait init 0 0 -1 0 3 0x10010200 scheduler swapper ddb{0}> show all locks CPU 0: exclusive mutex &map->flags_lock r = 0 (0xfffffd8064317388) #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_try+0x1ad sys/kern/kern_lock.c:311 #2 mtx_enter+0x62 sys/kern/kern_lock.c:261 #3 vm_map_lock_ln+0x13f sys/uvm/uvm_map.c:5169 #4 uvm_grow+0xa4 sys/uvm/uvm_unix.c:128 #5 upageflttrap+0x1dd sys/arch/amd64/amd64/trap.c:197 #6 usertrap+0x3c6 sys/arch/amd64/amd64/trap.c:603 #7 recall_trap+0x8 Process 90197 (syz-executor) thread 0xffff80003c4b2aa0 (450931) exclusive rwlock vmmaplk r = 0 (0xfffffd8064317310) #0 witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5f1 sys/kern/subr_witness.c:1160 #1 rw_do_enter_write+0x419 sys/kern/kern_rwlock.c:320 #2 vm_map_lock_ln+0x12e sys/uvm/uvm_map.c:5168 #3 uvm_grow+0xa4 sys/uvm/uvm_unix.c:128 #4 upageflttrap+0x1dd sys/arch/amd64/amd64/trap.c:197 #5 usertrap+0x3c6 sys/arch/amd64/amd64/trap.c:603 #6 recall_trap+0x8 exclusive mutex &map->flags_lock r = 0 (0xfffffd8064317388) #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_try+0x1ad sys/kern/kern_lock.c:311 #2 mtx_enter+0x62 sys/kern/kern_lock.c:261 #3 vm_map_lock_ln+0x13f sys/uvm/uvm_map.c:5169 #4 uvm_grow+0xa4 sys/uvm/uvm_unix.c:128 #5 upageflttrap+0x1dd sys/arch/amd64/amd64/trap.c:197 #6 usertrap+0x3c6 sys/arch/amd64/amd64/trap.c:603 #7 recall_trap+0x8 ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10264 11153K 11216K 166960K 12643 0 pcb 18 14K 30K 166960K 427 0 rtable 193 14K 14K 166960K 516 0 pf 38 18K 131090K 166960K 190 0 ifaddr 38 7K 8K 166960K 124 0 ifgroup 59 2K 2K 166960K 205 0 sysctl 4 1K 9K 166960K 19 0 counters 70 37K 38K 166960K 256 0 ioctlops 0 0K 4K 166960K 1896 0 iov 0 0K 44K 166960K 97 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1431 90K 90K 166960K 2663 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 9K 166960K 24 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 1K 166960K 76 0 dirhash 12 2K 2K 166960K 39 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 18 65K 240K 166960K 1634 0 sigio 0 0K 0K 166960K 39 0 proc 72 115K 180K 166960K 745 0 subproc 72 4K 4K 166960K 81 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 292 0 in_multi 69 4K 7K 166960K 190 0 ether_multi 1 0K 0K 166960K 31 0 mrt 2 0K 0K 166960K 10 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 253 1129K 1129K 166960K 253 0 exec 0 0K 1K 166960K 597 0 fusefs mount 1 32K 32K 166960K 1 0 pfkey data 0 0K 0K 166960K 38 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 240 167K 182K 166960K 16799 0 UVM aobj 36 3K 3K 166960K 38 0 pinsyscall 43 86K 103K 166960K 2768 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 107 0 NDP 13 0K 2K 166960K 85 0 temp 81 8652K 8907K 166960K 60039 0 kqueue 13 20K 32K 166960K 330 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 120 220 0 215 3 2 1 3 0 8 0 rtentry 176 149 0 86 5 0 5 5 0 8 0 unpcb 144 1504 0 1486 8 5 3 6 0 8 2 syncache 336 10 0 10 2 2 0 1 0 8 0 tcpqe 32 1 0 1 1 1 0 1 0 8 0 tcpcb 736 539 0 533 13 9 4 7 0 8 3 arp 128 19 0 9 1 0 1 1 0 8 0 inpcb 328 1844 0 1833 14 10 4 7 0 8 2 nd6 144 22 0 11 1 0 1 1 0 8 0 pkpcb 40 43 0 43 3 2 1 1 0 8 1 kcovpl 48 9 0 1 1 0 1 1 0 8 0 ppxss 1192 78 0 78 1 0 1 1 0 8 1 pppxif 1504 7 0 7 3 3 0 1 0 8 0 pfstscr 40 1 0 0 1 0 1 1 0 8 0 pffrag 232 14 0 3 1 0 1 1 0 482 0 pffrnode 88 10 0 1 1 0 1 1 0 8 0 pffrent 40 22 0 9 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 pfanchor 1288 3 0 0 1 0 1 1 0 8 0 pfstitem 24 111 0 31 1 0 1 1 0 8 0 pfstkey 128 113 0 33 3 0 3 3 0 8 0 pfstate 384 111 0 32 8 0 8 8 0 8 0 pfrule 1344 24 0 19 2 1 1 2 0 8 0 rttmr 136 1 0 1 1 1 0 1 0 8 0 art_heap8 4096 2 0 0 2 0 2 2 0 8 0 art_heap4 256 653 0 345 28 3 25 28 0 8 1 art_table 40 655 0 345 5 0 5 5 0 8 0 art_node 32 145 0 94 1 0 1 1 0 8 0 sysvmsgpl 40 55 0 49 1 0 1 1 0 8 0 semapl 112 71 0 61 1 0 1 1 0 8 0 shmpl 112 35 0 2 1 0 1 1 0 8 0 dirhash 1024 36 0 19 3 0 3 3 0 8 0 dino2pl 256 4577 0 3073 95 0 95 95 0 8 0 ffsino 296 4577 0 3073 117 0 117 117 0 8 0 nchpl 144 6858 0 5164 64 0 64 64 0 8 0 rtmask 32 20 0 20 4 3 1 1 0 8 1 uvmvnodes 80 5256 0 0 108 0 108 108 0 8 0 vnodes 216 5256 0 0 292 0 292 292 0 8 0 namei 1024 23811 0 23811 3 1 2 2 0 8 2 percpumem 16 143 0 93 1 0 1 1 0 8 0 kstatmem 264 138 0 106 5 2 3 3 0 8 0 scsiplug 72 8 0 8 3 3 0 1 0 8 0 scxspl 216 39434 0 39434 12 11 1 8 1 8 1 plimitpl 152 429 0 411 1 0 1 1 0 8 0 sigapl 424 1958 0 1902 9 0 9 9 0 8 2 knotepl 120 823 0 0 25 0 25 25 0 8 0 kqueuepl 224 578 0 567 4 3 1 3 0 8 0 pipepl 344 228 0 199 3 0 3 3 0 8 0 fdescpl 528 1911 0 1879 3 0 3 3 0 8 0 filepl 160 12685 0 12453 18 6 12 16 0 8 1 lockfpl 104 714 0 710 3 1 2 2 0 8 1 lockfspl 48 267 0 264 1 0 1 1 0 8 0 sessionpl 144 26 0 17 1 0 1 1 0 8 0 pgrppl 48 80 0 63 1 0 1 1 0 8 0 ucredpl 104 2351 0 2336 1 0 1 1 0 8 0 zombiepl 144 1903 0 1902 1 0 1 1 0 8 0 processpl 1232 1958 0 1902 6 0 6 6 0 8 0 procpl 664 4542 0 4476 9 0 9 9 0 8 2 sosppl 168 12 0 12 3 2 1 1 0 8 1 sockpl 752 3753 0 3719 18 8 10 16 0 8 6 mcl64k 65536 4 0 0 1 0 1 1 0 8 0 mcl16k 16384 3 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 122 0 0 16 0 16 16 0 8 0 mcl2k 2048 48 0 0 6 1 5 5 0 8 0 mtagpl 96 4 0 0 1 0 1 1 0 8 0 mbufpl 256 3206 0 0 201 0 201 201 0 8 0 bufpl 280 16195 0 10052 439 0 439 439 0 8 0 anonpl 32 12911 0 0 105 0 105 105 0 246 0 amapchunkpl 152 56308 0 55824 44 12 32 32 0 158 9 amappl16 200 6850 0 6810 63 44 19 28 0 8 8 amappl15 192 6 0 6 2 2 0 1 0 8 0 amappl14 184 121 0 109 1 0 1 1 0 8 0 amappl13 176 4 0 4 1 1 0 1 0 8 0 amappl12 168 2586 0 2555 4 2 2 3 0 8 0 amappl11 160 50 0 35 1 0 1 1 0 8 0 amappl10 152 9 0 9 1 1 0 1 0 8 0 amappl9 144 254 0 254 1 1 0 1 0 8 0 amappl8 136 38 0 36 1 0 1 1 0 8 0 amappl7 128 115 0 102 1 0 1 1 0 8 0 amappl6 120 193 0 189 1 0 1 1 0 8 0 amappl5 112 147 0 137 1 0 1 1 0 8 0 amappl4 104 313 0 291 1 0 1 1 0 8 0 amappl3 96 9890 0 9793 4 1 3 3 0 8 0 amappl2 88 2167 0 2088 2 0 2 2 0 8 0 amappl1 80 14576 0 13978 15 1 14 15 0 8 0 amappl 88 15803 0 15636 5 0 5 5 0 92 0 dma16384 16384 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 128 257 0 257 3 3 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 18 0 17 1 0 1 1 0 8 0 aobjpl 72 37 0 2 1 0 1 1 0 8 0 uaddrrnd 24 1911 0 1879 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 1911 0 1879 1 0 1 1 0 8 0 vmmpekpl 168 16159 0 16112 3 0 3 3 0 8 0 vmmpepl 168 124134 0 122082 127 14 113 113 0 357 13 vmsppl 488 1910 0 1879 6 1 5 5 0 8 0 rwobjpl 80 38583 0 32354 133 0 133 133 0 8 0 pdppl 4096 3830 0 3758 104 32 72 86 0 8 0 pvpl 32 22640 0 0 183 0 183 183 0 265 0 pmappl 256 1910 0 1879 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 484 0 52 13 0 13 13 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: 0x7a939cce6690, 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_1(3f8,5) at x86_bus_space_io_read_1+0x37 sys/arch/amd64/amd64/bus_space.c:662 comcnputc(800,6b) at comcnputc+0xd0 comcn_read_reg sys/dev/ic/com.c:1655 [inline] comcnputc(800,6b) at comcnputc+0xd0 sys/dev/ic/com.c:1259 cnputc(6b) at cnputc+0x67 sys/dev/cons.c:218 db_putchar(6b) at db_putchar+0x36d sys/ddb/db_output.c:155 kprintf() at kprintf+0x203 sys/kern/subr_prf.c:723 db_printf(ffffffff833fcff3) at db_printf+0x9b sys/kern/subr_prf.c:-1 db_ktrap(6,0,ffff80003c477090) at db_ktrap+0xe3 db_printtrap sys/arch/amd64/amd64/db_interface.c:99 [inline] db_ktrap(6,0,ffff80003c477090) at db_ktrap+0xe3 sys/arch/amd64/amd64/db_interface.c:128 kerntrap(ffff80003c477090) at kerntrap+0x23e sys/arch/amd64/amd64/trap.c:480 alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b dt_ioctl_record_stop(ffff80000147f000) at dt_ioctl_record_stop+0x108 sys/dev/dt/dt_dev.c:586 dtclose(11e5f,81,2000,ffff80003c4b2808) at dtclose+0x109 dt_pcb_purge sys/dev/dt/dt_dev.c:-1 [inline] dtclose(11e5f,81,2000,ffff80003c4b2808) at dtclose+0x109 sys/dev/dt/dt_dev.c:232 end trace frame: 0xffff80003c477230, 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_1(3f8,5) at x86_bus_space_io_read_1+0x37 sys/arch/amd64/amd64/bus_space.c:662 comcnputc(800,6b) at comcnputc+0xd0 comcn_read_reg sys/dev/ic/com.c:1655 [inline] comcnputc(800,6b) at comcnputc+0xd0 sys/dev/ic/com.c:1259 cnputc(6b) at cnputc+0x67 sys/dev/cons.c:218 db_putchar(6b) at db_putchar+0x36d sys/ddb/db_output.c:155 kprintf() at kprintf+0x203 sys/kern/subr_prf.c:723 db_printf(ffffffff833fcff3) at db_printf+0x9b sys/kern/subr_prf.c:-1 db_ktrap(6,0,ffff80003c477090) at db_ktrap+0xe3 db_printtrap sys/arch/amd64/amd64/db_interface.c:99 [inline] db_ktrap(6,0,ffff80003c477090) at db_ktrap+0xe3 sys/arch/amd64/amd64/db_interface.c:128 kerntrap(ffff80003c477090) at kerntrap+0x23e sys/arch/amd64/amd64/trap.c:480 alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b dt_ioctl_record_stop(ffff80000147f000) at dt_ioctl_record_stop+0x108 sys/dev/dt/dt_dev.c:586 dtclose(11e5f,81,2000,ffff80003c4b2808) at dtclose+0x109 dt_pcb_purge sys/dev/dt/dt_dev.c:-1 [inline] dtclose(11e5f,81,2000,ffff80003c4b2808) at dtclose+0x109 sys/dev/dt/dt_dev.c:232 spec_close(ffff80003c477240) at spec_close+0x466 sys/kern/spec_vnops.c:-1 VOP_CLOSE(fffffd805d74a2b0,81,fffffd80097fb5b0,ffff80003c4b2808) at VOP_CLOSE+0x132 sys/kern/vfs_vops.c:156 vn_closefile(fffffd8069339ae8,ffff80003c4b2808) at vn_closefile+0x12b vn_close sys/kern/vfs_vnops.c:292 [inline] vn_closefile(fffffd8069339ae8,ffff80003c4b2808) at vn_closefile+0x12b sys/kern/vfs_vnops.c:615 fdrop(fffffd8069339ae8,ffff80003c4b2808) at fdrop+0x121 sys/kern/kern_descrip.c:1280 closef(fffffd8069339ae8,ffff80003c4b2808) at closef+0x192 sys/kern/kern_descrip.c:1264 fdfree(ffff80003c4b2808) at fdfree+0x116 sys/kern/kern_descrip.c:1195 exit1(ffff80003c4b2808,0,0,1) at exit1+0x576 sys/kern/kern_exit.c:215 sys_exit(ffff80003c4b2808,ffff80003c4775b0,ffff80003c477500) at sys_exit+0x1a sys/kern/kern_exit.c:-1 syscall(ffff80003c4775b0) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c4775b0) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:746 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7143a770d240, count: -24