*cpu1: uvm_fault(0xfffffd806ef637a8, 0x0, 0, 1) -> e ddb{0}> trace proc_trampoline() at proc_trampoline+0xc7 end of kernel end trace frame: 0x7d3f36bff8c0, count: -1 ddb{0}> show registers rdi 0 rsi 0 rbp 0xffff80002a3335b0 rbx 0 rdx 0 rcx 0xffff80002a2e5508 rax 0x2a r8 0xffff80002a3334e0 r9 0 r10 0x378d6545602e71f5 r11 0x4609ae2e17bb031e r12 0 r13 0 r14 0 r15 0 rip 0xffffffff82c4e4c7 proc_trampoline+0xc7 cs 0x8 rflags 0x246 rsp 0xffff80002a333530 ss 0 proc_trampoline+0xc7: movl $0,%gs:0x688 ddb{0}> show proc PROC (syz-executor) tid=361952 pid=63632 tcnt=2 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=0xffff80002a2e4578,0xffff80002a2e5280 process=0xffff80002a2a4eb0 user=0xffff80002a32e000, vmspace=0xfffffd806ef63b78 estcpu=36, cpticks=2, pctcpu=0.0, user=0, sys=2, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND *63632 361952 91744 0 7 0 syz-executor 63632 342899 91744 0 3 0x4000080 fsleep syz-executor 57262 70808 52183 0 3 0x80 nanoslp syz-executor 57262 504143 52183 0 3 0x4000000 biowait syz-executor 57262 389646 52183 0 3 0x4000080 fsleep syz-executor 98353 495156 11923 0 2 0 syz-executor 98353 152718 11923 0 3 0x4000080 fsleep syz-executor 98353 196954 11923 0 3 0x4000080 kqsel syz-executor 31167 443684 97092 0 2 0 syz-executor 31167 318912 97092 0 3 0x4000080 fsleep syz-executor 5453 416314 87401 0 3 0x80 nanoslp syz-executor 5453 311632 87401 0 3 0x4000080 kqread syz-executor 5453 57552 87401 0 3 0x4000080 fsleep syz-executor 87401 182545 86593 0 3 0x82 nanoslp syz-executor 12660 248133 86593 0 3 0x82 nanoslp syz-executor 43985 232820 1 0 3 0x100083 ttyin getty 72059 160005 86593 0 3 0x82 wait syz-executor 3788 157217 79842 0 3 0x82 sbwait sshd-session 15823 195787 0 0 3 0x14200 bored sosplice 68392 153543 86593 0 3 0x2 biowait syz-executor 11923 460164 86593 0 3 0x82 nanoslp syz-executor 91744 386316 86593 0 3 0x82 nanoslp syz-executor 97092 510858 86593 0 3 0x82 nanoslp syz-executor 52183 401947 86593 0 3 0x82 nanoslp syz-executor 86593 364203 44029 0 3 0x82 kqread syz-executor 44029 330421 63201 0 3 0x10008a sigsusp ksh 63201 164985 26289 0 3 0x98 kqread sshd-session 26289 328994 79842 0 3 0x92 kqread sshd-session 79842 414679 1 0 3 0x88 kqread sshd 77776 187980 39909 74 3 0x1100092 bpf pflogd 39909 350668 1 0 3 0x80 sbwait pflogd 32325 338122 31457 73 3 0x1100090 kqread syslogd 31457 247631 1 0 3 0x100082 sbwait syslogd 74744 340303 1 0 3 0x100080 kqread resolvd 85199 380801 0 0 3 0x14200 bored smr 69566 237581 0 0 2 0x14200 zerothread 41892 313727 0 0 3 0x14200 aiodoned aiodoned 28317 443236 0 0 3 0x14200 syncer update 7375 75776 0 0 3 0x14200 cleaner cleaner 12012 416374 0 0 3 0x14200 reaper reaper 84018 300283 0 0 3 0x14200 pgdaemon pagedaemon 29807 383818 0 0 3 0x14200 bored viomb 78900 363918 0 0 3 0x40014200 acpi0 acpi0 91818 213432 0 0 3 0x40014200 idle1 24782 402301 0 0 3 0x14200 bored softnet7 55425 21603 0 0 3 0x14200 bored softnet6 61438 464039 0 0 3 0x14200 bored softnet5 22480 493836 0 0 3 0x14200 bored softnet4 30365 105883 0 0 3 0x14200 bored softnet3 21789 356934 0 0 3 0x14200 bored softnet2 13241 240101 0 0 3 0x14200 bored softnet1 78583 104188 0 0 3 0x14200 bored softnet0 79193 467161 0 0 3 0x14200 bored systqmp 78417 260375 0 0 3 0x14200 bored systq 44486 263261 0 0 3 0x14200 tmoslp softclockmp 63258 328096 0 0 3 0x40014200 tmoslp softclock 56480 415923 0 0 3 0x40014200 idle0 1 353184 0 0 3 0x82 wait init 0 0 -1 0 3 0x10010200 scheduler swapper ddb{0}> show all locks CPU 0: exclusive mutex &pmap->pm_mtx r = 0 (0xfffffd806b7c0610) #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 pmap_extract+0xb1 sys/arch/amd64/amd64/pmap.c:1572 #4 uvm_fault_upper_lookup+0x20b sys/uvm/uvm_fault.c:1003 #5 uvm_fault+0x159 sys/uvm/uvm_fault.c:682 #6 upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:192 #7 usertrap+0x3c6 sys/arch/amd64/amd64/trap.c:605 #8 recall_trap+0x8 Process 63632 (syz-executor) thread 0xffff80002a2e5508 (361952) Process 57262 (syz-executor) thread 0xffff800034809778 (504143) Process 68392 (syz-executor) thread 0xffff8000ffff2d08 (153543) ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10241 11135K 12422K 166960K 14025 0 pcb 17 16K 17K 166960K 645 0 rtable 181 10K 11K 166960K 823 0 pf 42 19K 83K 166960K 258 0 ifaddr 34 5K 9K 166960K 176 0 ifgroup 61 2K 3K 166960K 300 0 sysctl 4 1K 9K 166960K 40 0 counters 72 37K 38K 166960K 464 0 ioctlops 0 0K 4K 166960K 2187 0 iov 0 0K 28K 166960K 246 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1430 90K 90K 166960K 3674 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 13K 166960K 21 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 0K 166960K 326 0 dirhash 12 2K 2K 166960K 51 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 17 61K 240K 166960K 3244 0 sigio 0 0K 0K 166960K 69 0 proc 66 83K 164K 166960K 1036 0 subproc 72 4K 4K 166960K 109 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 1 0K 0K 166960K 451 0 in_multi 56 4K 7K 166960K 247 0 ether_multi 2 0K 0K 166960K 34 0 mrt 1 0K 0K 166960K 17 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 109 493K 493K 166960K 109 0 exec 0 0K 1K 166960K 967 0 fusefs mount 1 32K 32K 166960K 1 0 pfkey data 0 0K 0K 166960K 5 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 239 136K 177K 166960K 31647 0 UVM aobj 8 2K 2K 166960K 8 0 pinsyscall 38 76K 104K 166960K 4465 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 190 0 NDP 14 0K 2K 166960K 122 0 temp 84 8652K 8908K 166960K 130858 0 kqueue 7 12K 31K 166960K 634 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 120 344 0 343 3 2 1 3 0 8 0 rtentry 176 293 0 230 5 0 5 5 0 8 0 unpcb 144 2347 0 2333 13 12 1 6 0 8 0 syncache 336 14 0 14 6 6 0 1 0 8 0 tcpqe 32 2 0 2 2 2 0 1 0 8 0 tcpcb 736 1215 0 1204 22 15 7 7 0 8 5 arp 128 34 0 24 1 0 1 1 0 8 0 inpcb 328 4131 0 4120 32 25 7 12 0 8 5 nd6 144 34 0 23 1 0 1 1 0 8 0 pkpcb 40 44 0 44 3 2 1 1 0 8 1 kcovpl 48 12 0 4 1 0 1 1 0 8 0 mppekey 1024 68 0 68 3 3 0 1 0 8 0 ppxss 1192 171 0 170 1 0 1 1 0 8 0 pppxif 1504 10 0 10 3 2 1 1 0 8 1 pfstscr 40 3 0 3 1 1 0 1 0 8 0 pffrag 232 20 0 8 1 0 1 1 0 482 0 pffrnode 88 20 0 8 1 0 1 1 0 8 0 pffrent 40 33 0 21 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 3 0 3 1 1 0 1 0 8 0 pftag 88 2 0 0 1 0 1 1 0 8 0 pfstitem 24 212 0 105 1 0 1 1 0 8 0 pfstkey 128 218 0 111 4 0 4 4 0 8 0 pfstate 384 215 0 109 14 2 12 14 0 8 0 pfrule 1344 25 0 20 2 1 1 2 0 8 0 rttmr 136 3 0 3 3 3 0 1 0 8 0 art_heap8 4096 4 0 0 4 0 4 4 0 8 0 art_heap4 256 973 0 716 30 10 20 29 0 8 0 art_table 40 977 0 716 5 0 5 5 0 8 0 art_node 32 222 0 169 1 0 1 1 0 8 0 sysvmsgpl 40 12 0 10 1 0 1 1 0 8 0 semupl 112 2 0 2 2 2 0 1 0 8 0 semapl 112 323 0 313 1 0 1 1 0 8 0 shmpl 112 5 0 0 1 0 1 1 0 8 0 dirhash 1024 43 0 26 3 0 3 3 0 8 0 dino2pl 256 7608 0 6095 96 0 96 96 0 8 1 ffsino 296 7608 0 6095 117 0 117 117 0 8 0 nchpl 144 12201 0 10496 64 0 64 64 0 8 0 rtmask 32 22 0 22 2 1 1 1 0 8 1 uvmvnodes 80 5926 0 0 121 0 121 121 0 8 0 vnodes 216 5926 0 0 330 0 330 330 0 8 0 namei 1024 42459 0 42459 3 2 1 2 0 8 1 percpumem 16 247 0 196 1 0 1 1 0 8 0 kstatmem 264 202 0 168 3 0 3 3 0 8 0 acpiwqpl 32 1 0 1 1 0 1 1 1 8 1 scsiplug 72 14 0 14 5 4 1 1 0 8 1 scxspl 216 75630 0 75628 17 15 2 8 1 8 1 plimitpl 152 891 0 875 1 0 1 1 0 8 0 sigapl 424 3561 0 3509 7 0 7 7 0 8 0 knotepl 120 590 0 0 17 0 17 17 0 8 0 kqueuepl 224 1316 0 1308 11 7 4 5 0 8 3 pipepl 344 551 0 524 12 9 3 9 0 8 0 fdescpl 528 3514 0 3485 3 0 3 3 0 8 0 filepl 160 24847 0 24633 34 19 15 22 0 8 4 lockfpl 104 1620 0 1618 4 3 1 2 0 8 0 lockfspl 48 580 0 578 1 0 1 1 0 8 0 sessionpl 144 37 0 28 1 0 1 1 0 8 0 pgrppl 48 131 0 114 1 0 1 1 0 8 0 ucredpl 104 3850 0 3840 1 0 1 1 0 8 0 zombiepl 144 3511 0 3509 1 0 1 1 0 8 0 processpl 1248 3561 0 3509 5 0 5 5 0 8 0 procpl 664 8792 0 8732 10 3 7 7 0 8 0 sosppl 168 22 0 22 1 1 0 1 0 8 0 sockpl 752 6932 0 6906 55 45 10 22 0 8 6 mcl64k 65536 6 0 0 1 0 1 1 0 8 0 mcl16k 16384 2 0 0 1 0 1 1 0 8 0 mcl12k 12288 1 0 0 1 0 1 1 0 8 0 mcl9k 9216 2 0 0 1 0 1 1 0 8 0 mcl8k 8192 4 0 0 1 0 1 1 0 8 0 mcl4k 4096 121 0 0 16 1 15 16 0 8 0 mcl2k2 2112 2 0 0 1 0 1 1 0 8 0 mcl2k 2048 70 0 0 6 0 6 6 0 8 0 mtagpl 96 11 0 0 1 0 1 1 0 8 0 mbufpl 256 351 0 0 21 0 21 21 0 8 0 bufpl 280 32488 0 26345 440 0 440 440 0 8 1 anonpl 32 17617 0 0 142 0 142 142 0 246 0 amapchunkpl 152 108325 0 107672 51 18 33 36 0 158 3 amappl16 200 13270 0 13120 65 41 24 34 0 8 8 amappl15 192 2 0 2 1 1 0 1 0 8 0 amappl14 184 141 0 131 1 0 1 1 0 8 0 amappl13 176 9 0 9 3 3 0 1 0 8 0 amappl12 168 4224 0 4195 4 2 2 3 0 8 0 amappl11 160 60 0 51 1 0 1 1 0 8 0 amappl10 152 8 0 8 1 1 0 1 0 8 0 amappl9 144 248 0 248 1 1 0 1 0 8 0 amappl8 136 27 0 23 1 0 1 1 0 8 0 amappl7 128 131 0 120 1 0 1 1 0 8 0 amappl6 120 229 0 224 1 0 1 1 0 8 0 amappl5 112 146 0 139 1 0 1 1 0 8 0 amappl4 104 342 0 322 1 0 1 1 0 8 0 amappl3 96 22231 0 22120 5 1 4 4 0 8 0 amappl2 88 821 0 767 2 0 2 2 0 8 0 amappl1 80 23066 0 22479 17 2 15 15 0 8 0 amappl 88 30329 0 30149 5 0 5 5 0 92 0 dma32768 32768 1 0 1 1 1 0 1 0 8 0 dma16384 16384 1 0 1 1 0 1 1 0 8 1 dma4096 4096 1 0 1 1 1 0 1 0 8 0 dma1024 1024 2 0 1 1 0 1 1 0 8 0 dma256 256 8 0 8 2 2 0 1 0 8 0 dma128 128 259 0 259 4 4 0 1 0 8 0 dma64 64 7 0 7 2 2 0 1 0 8 0 dma32 32 8 0 8 2 2 0 1 0 8 0 dma16 16 19 0 18 1 0 1 1 0 8 0 aobjpl 72 7 0 0 1 0 1 1 0 8 0 uaddrrnd 24 3514 0 3485 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 3514 0 3485 1 0 1 1 0 8 0 vmmpekpl 168 27515 0 27465 3 0 3 3 0 8 0 vmmpepl 168 228921 0 226953 130 19 111 113 0 357 6 vmsppl 488 3513 0 3485 6 1 5 5 0 8 0 rwobjpl 80 63957 0 56994 157 4 153 153 0 8 4 pdppl 4096 7036 0 6970 116 48 68 86 0 8 2 pvpl 32 26391 0 0 213 1 212 212 0 265 0 pmappl 256 3513 0 3485 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 338 0 89 8 0 8 8 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: 0x7d3f36bff8c0, 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:654 comcnputc(800,61) at comcnputc+0x250 comcn_read_reg sys/dev/ic/com.c:1655 [inline] comcnputc(800,61) at comcnputc+0x250 sys/dev/ic/com.c:1269 cnputc(61) at cnputc+0x67 sys/dev/cons.c:218 kputchar(61,5,0) at kputchar+0x2ed sys/kern/subr_prf.c:367 kprintf() at kprintf+0x203 sys/kern/subr_prf.c:723 printf(ffffffff834168de) at printf+0x8b sys/kern/subr_prf.c:529 trap_print(ffff80002a33f0c0,6) at trap_print+0x70 sys/arch/amd64/amd64/trap.c:626 kerntrap(ffff80002a33f0c0) at kerntrap+0x2e6 sys/arch/amd64/amd64/trap.c:487 alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b dt_ioctl_record_stop(ffff800001564000) at dt_ioctl_record_stop+0x108 sys/dev/dt/dt_dev.c:586 dtclose(21e5f,1,2000,ffff8000348094e0) at dtclose+0x109 dt_pcb_purge sys/dev/dt/dt_dev.c:-1 [inline] dtclose(21e5f,1,2000,ffff8000348094e0) at dtclose+0x109 sys/dev/dt/dt_dev.c:232 end trace frame: 0xffff80002a33f260, 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:654 comcnputc(800,61) at comcnputc+0x250 comcn_read_reg sys/dev/ic/com.c:1655 [inline] comcnputc(800,61) at comcnputc+0x250 sys/dev/ic/com.c:1269 cnputc(61) at cnputc+0x67 sys/dev/cons.c:218 kputchar(61,5,0) at kputchar+0x2ed sys/kern/subr_prf.c:367 kprintf() at kprintf+0x203 sys/kern/subr_prf.c:723 printf(ffffffff834168de) at printf+0x8b sys/kern/subr_prf.c:529 trap_print(ffff80002a33f0c0,6) at trap_print+0x70 sys/arch/amd64/amd64/trap.c:626 kerntrap(ffff80002a33f0c0) at kerntrap+0x2e6 sys/arch/amd64/amd64/trap.c:487 alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b dt_ioctl_record_stop(ffff800001564000) at dt_ioctl_record_stop+0x108 sys/dev/dt/dt_dev.c:586 dtclose(21e5f,1,2000,ffff8000348094e0) at dtclose+0x109 dt_pcb_purge sys/dev/dt/dt_dev.c:-1 [inline] dtclose(21e5f,1,2000,ffff8000348094e0) at dtclose+0x109 sys/dev/dt/dt_dev.c:232 spec_close(ffff80002a33f270) at spec_close+0x466 sys/kern/spec_vnops.c:-1 VOP_CLOSE(fffffd806a9946d8,1,fffffd80097fb8f0,ffff8000348094e0) at VOP_CLOSE+0x132 sys/kern/vfs_vops.c:156 vn_closefile(fffffd8069aab1e8,ffff8000348094e0) at vn_closefile+0x12b vn_close sys/kern/vfs_vnops.c:292 [inline] vn_closefile(fffffd8069aab1e8,ffff8000348094e0) at vn_closefile+0x12b sys/kern/vfs_vnops.c:615 fdrop(fffffd8069aab1e8,ffff8000348094e0) at fdrop+0x121 sys/kern/kern_descrip.c:1280 closef(fffffd8069aab1e8,ffff8000348094e0) at closef+0x192 sys/kern/kern_descrip.c:1264 fdfree(ffff8000348094e0) at fdfree+0x116 sys/kern/kern_descrip.c:1195 exit1(ffff8000348094e0,0,0,1) at exit1+0x576 sys/kern/kern_exit.c:215 sys_exit(ffff8000348094e0,ffff80002a33f5e0,ffff80002a33f530) at sys_exit+0x1a sys/kern/kern_exit.c:-1 syscall(ffff80002a33f5e0) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80002a33f5e0) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:748 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f728adf2260, count: -24