*cpu1: uvm_fault(0xfffffd807024b2f0, 0x0, 0, 1) -> e ddb{0}> trace proc_trampoline() at proc_trampoline+0xdc end of kernel end trace frame: 0x7f7ffffed3b0, count: -1 ddb{0}> show registers rdi 0 rsi 0 rbp 0xffff80002e376c50 rbx 0 rdx 0 rcx 0 rax 0x2a r8 0xffff80002e376b80 r9 0 r10 0xab718a51bbb3940b r11 0xb5370bd8ed4b0e95 r12 0 r13 0 r14 0 r15 0 rip 0xffffffff822f850c proc_trampoline+0xdc cs 0x8 rflags 0x246 rsp 0xffff80002e376bd0 ss 0 proc_trampoline+0xdc: movl $0,%gs:0x538 ddb{0}> show proc PROC (syz-executor.7) pid=464308 stat=onproc flags process=0 proc=0 pri=80, usrpri=86, nice=20 forw=0xffffffffffffffff, list=0xffff8000ffff2fc8,0xffff8000ffff3518 process=0xffff800027498018 user=0xffff80002e371000, vmspace=0xfffffd807024b8b0 estcpu=36, cpticks=1, pctcpu=0.0 user=0, sys=1, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND *27017 464308 21731 0 7 0 syz-executor.7 19971 227953 61586 0 2 0 syz-executor.6 19971 233166 61586 0 2 0x4000000 syz-executor.6 28845 117802 78592 0 2 0 syz-executor.1 76237 75924 19302 0 2 0 syz-executor.0 25076 400779 53222 0 2 0 syz-executor.4 98566 434702 39606 0 3 0x80 nanoslp syz-executor.3 98566 111418 39606 0 7 0x4000000 syz-executor.3 80431 413921 8535 0 3 0x80 nanoslp syz-executor.5 80431 148736 8535 0 3 0x4000080 msgwait syz-executor.5 80431 447222 8535 0 3 0x4000080 fsleep syz-executor.5 89745 91660 0 0 3 0x14200 bored sosplice 53222 466654 29045 0 3 0x82 nanoslp syz-executor.4 61586 352421 29045 0 3 0x82 nanoslp syz-executor.6 21731 335349 29045 0 3 0x82 nanoslp syz-executor.7 8535 507393 29045 0 3 0x82 nanoslp syz-executor.5 39606 170385 29045 0 2 0x2 syz-executor.3 46098 455312 29045 0 3 0x82 nanoslp syz-executor.2 78592 78448 29045 0 3 0x82 nanoslp syz-executor.1 19302 22585 29045 0 2 0x2 syz-executor.0 29045 477581 46554 0 3 0x82 thrsleep syz-fuzzer 29045 392841 46554 0 3 0x4000082 thrsleep syz-fuzzer 29045 41386 46554 0 3 0x4000082 thrsleep syz-fuzzer 29045 24946 46554 0 3 0x4000082 thrsleep syz-fuzzer 29045 508681 46554 0 3 0x4000082 thrsleep syz-fuzzer 29045 202071 46554 0 3 0x4000082 kqread syz-fuzzer 29045 179072 46554 0 3 0x4000082 thrsleep syz-fuzzer 29045 402587 46554 0 3 0x4000082 thrsleep syz-fuzzer 29045 439319 46554 0 3 0x4000082 thrsleep syz-fuzzer 46554 261724 53479 0 3 0x10008a sigsusp ksh 53479 140613 30417 0 3 0x9a kqread sshd 27785 467984 1 0 3 0x100083 ttyin getty 30417 263176 1 0 3 0x88 kqread sshd 12057 416503 61468 74 3 0x1100092 bpf pflogd 61468 493412 1 0 3 0x80 netio pflogd 62787 117986 38411 73 3 0x1100090 kqread syslogd 38411 497439 1 0 3 0x100082 netio syslogd 51428 102793 1 0 3 0x100080 kqread resolvd 77108 365864 83684 77 3 0x100092 kqread dhcpleased 336 517930 83684 77 3 0x100092 kqread dhcpleased 83684 267800 1 0 3 0x80 kqread dhcpleased 16791 49034 0 0 3 0x14200 bored smr 35553 278009 0 0 2 0x14200 zerothread 58673 218097 0 0 3 0x14200 aiodoned aiodoned 55037 250006 0 0 3 0x14200 syncer update 70228 50864 0 0 3 0x14200 cleaner cleaner 46533 244906 0 0 3 0x14200 reaper reaper 44901 10698 0 0 3 0x14200 pgdaemon pagedaemon 96464 465347 0 0 3 0x14200 bored viomb 61985 271225 0 0 3 0x40014200 acpi0 acpi0 21431 180483 0 0 3 0x40014200 idle1 6339 422440 0 0 3 0x14200 bored softnet 3628 431385 0 0 3 0x14200 bored systqmp 60009 169724 0 0 3 0x14200 bored systq 54796 10292 0 0 3 0x40014200 bored softclock 62783 464589 0 0 3 0x40014200 idle0 1 274596 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks CPU 0: exclusive mutex pvpl r = 0 (0xffffffff82a68870) #0 witness_lock+0x44d #1 mtx_enter_try+0x100 #2 mtx_enter+0x4b sys/kern/kern_lock.c:266 #3 pool_get+0xbd sys/kern/subr_pool.c:581 #4 pmap_enter+0x169 #5 uvm_fault_lower+0x77c sys/uvm/uvm_fault.c:1496 #6 uvm_fault+0x248 #7 upageflttrap+0x82 sys/arch/amd64/amd64/trap.c:181 #8 usertrap+0x1aa sys/arch/amd64/amd64/trap.c:403 #9 recall_trap+0x8 Process 27017 (syz-executor.7) thread 0xffff8000ffff2008 (464308) exclusive rwlock amaplk r = 0 (0xfffffd8066e18c50) #0 witness_lock+0x44d #1 uvm_fault_check+0x3ca sys/uvm/uvm_fault.c:774 #2 uvm_fault+0x102 sys/uvm/uvm_fault.c:602 #3 upageflttrap+0x82 sys/arch/amd64/amd64/trap.c:181 #4 usertrap+0x1aa sys/arch/amd64/amd64/trap.c:403 #5 recall_trap+0x8 shared rwlock vmmaplk r = 0 (0xfffffd807024b8c8) #0 witness_lock+0x44d #1 uvmfault_lookup+0xd9 sys/uvm/uvm_fault.c:1758 #2 uvm_fault_check+0x3a sys/uvm/uvm_fault.c:674 #3 uvm_fault+0x102 sys/uvm/uvm_fault.c:602 #4 upageflttrap+0x82 sys/arch/amd64/amd64/trap.c:181 #5 usertrap+0x1aa sys/arch/amd64/amd64/trap.c:403 #6 recall_trap+0x8 exclusive mutex pvpl r = 0 (0xffffffff82a68870) #0 witness_lock+0x44d #1 mtx_enter_try+0x100 #2 mtx_enter+0x4b sys/kern/kern_lock.c:266 #3 pool_get+0xbd sys/kern/subr_pool.c:581 #4 pmap_enter+0x169 #5 uvm_fault_lower+0x77c sys/uvm/uvm_fault.c:1496 #6 uvm_fault+0x248 #7 upageflttrap+0x82 sys/arch/amd64/amd64/trap.c:181 #8 usertrap+0x1aa sys/arch/amd64/amd64/trap.c:403 #9 recall_trap+0x8 Process 98566 (syz-executor.3) thread 0xffff8000ffff1270 (111418) exclusive kernel_lock &kernel_lock r = 0 (0xffffffff82b6e770) #0 witness_lock+0x44d #1 kpageflttrap+0x23d sys/arch/amd64/amd64/trap.c:274 #2 kerntrap+0xef sys/arch/amd64/amd64/trap.c:318 #3 alltraps_kern_meltdown+0x7b #4 socreate+0x84 sys/kern/uipc_socket.c:172 #5 sys_socket+0xd8 sys/kern/uipc_syscalls.c:96 #6 syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline] #6 syscall+0x489 sys/arch/amd64/amd64/trap.c:585 #7 Xsyscall+0x128 ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10185 6492K 6867K 78643K 12651 0 pcb 13 10K 12K 78643K 297 0 rtable 190 5K 7K 78643K 433 0 ifaddr 90 17K 20K 78643K 146 0 counters 56 35K 35K 78643K 58 0 ioctlops 0 0K 8K 78643K 3716 0 iov 0 0K 12K 78643K 92 0 mount 1 1K 1K 78643K 1 0 log 0 0K 0K 78643K 5 0 vnodes 1275 80K 80K 78643K 1532 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 5K 78643K 11 0 VM map 2 1K 1K 78643K 2 0 sem 10 0K 1K 78643K 11 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1697 195K 286K 78643K 12548 0 file desc 17 61K 85K 78643K 1098 0 sigio 0 0K 0K 78643K 9 0 proc 71 87K 111K 78643K 576 0 subproc 104 6K 6K 78643K 117 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 0 0K 0K 78643K 293 0 in_multi 81 5K 6K 78643K 144 0 ether_multi 1 0K 0K 78643K 11 0 mrt 0 0K 0K 78643K 8 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 67 307K 307K 78643K 67 0 exec 0 0K 2K 78643K 803 0 tdb 3 0K 0K 78643K 3 0 pagedep 1 8K 8K 78643K 1 0 inodedep 1 32K 32K 78643K 1 0 newblk 1 0K 0K 78643K 1 0 VM swap 7 26K 26K 78643K 7 0 UVM amap 339 86K 86K 78643K 15627 0 UVM aobj 123 4K 4K 78643K 126 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 93 0 NDP 13 0K 1K 78643K 35 0 temp 119 4697K 8789K 78643K 7085 0 kqueue 12 18K 22K 78643K 80 0 SYN cache 2 16K 16K 78643K 2 0 ddb{0}> show all pools Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle plcache 128 22 0 0 1 0 1 1 0 8 0 rtpcb 120 47 0 44 1 0 1 1 0 8 0 rtentry 112 137 0 52 4 0 4 4 0 8 0 unpcb 136 436 0 421 6 5 1 6 0 8 0 syncache 296 4 0 4 1 1 0 1 0 8 0 tcpqe 32 156 0 156 1 1 0 1 0 8 0 tcpcb 736 318 0 314 19 14 5 13 0 8 4 arp 120 21 0 4 1 0 1 1 0 8 0 inpcb 304 930 0 920 23 14 9 11 0 8 8 nd6 48 31 0 11 1 0 1 1 0 8 0 kcovpl 48 9 0 1 1 0 1 1 0 8 0 pffrent 40 4 0 4 1 1 0 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 pftag 88 2 0 0 1 0 1 1 0 8 0 pfstitem 24 43 0 17 1 0 1 1 0 8 0 pfstkey 112 43 0 17 1 0 1 1 0 8 0 pfstate 320 43 0 17 3 0 3 3 0 8 0 pfrule 1360 1548 0 1314 21 1 20 20 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 602 0 241 29 4 25 29 0 8 0 art_table 32 603 0 241 4 0 4 4 0 8 0 art_node 16 136 0 59 1 0 1 1 0 8 0 sysvmsgpl 40 10 0 7 1 0 1 1 0 8 0 semupl 112 2 0 2 1 1 0 1 0 8 0 semapl 112 8 0 0 1 0 1 1 0 8 0 shmpl 112 123 0 3 4 0 4 4 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 2707 0 1275 91 0 91 91 0 8 0 ffsino 272 2707 0 1275 97 0 97 97 0 8 0 nchpl 144 4248 0 2615 63 0 63 63 0 8 0 uvmvnodes 80 2968 0 0 61 0 61 61 0 8 0 vnodes 224 2968 0 0 175 0 175 175 0 8 0 namei 1024 14563 0 14563 2 1 1 2 0 8 1 percpumem 16 41 0 1 1 0 1 1 0 8 0 vmpool 560 2 0 2 1 1 0 1 0 8 0 scxspl 216 12531 0 12531 10 9 1 8 0 8 1 plimitpl 152 106 0 91 1 0 1 1 0 8 0 sigapl 424 1402 0 1356 6 0 6 6 0 8 0 futexpl 64 8999 0 8998 1 0 1 1 0 8 0 knotepl 120 139 0 0 4 0 4 4 0 8 0 kqueuepl 216 152 0 144 1 0 1 1 0 8 0 pipepl 336 192 0 164 3 0 3 3 0 8 0 fdescpl 496 1387 0 1357 5 1 4 5 0 8 0 filepl 152 6586 0 6348 22 8 14 15 0 8 4 lockfpl 104 163 0 161 1 0 1 1 0 8 0 lockfspl 48 63 0 61 1 0 1 1 0 8 0 sessionpl 144 25 0 8 1 0 1 1 0 8 0 pgrppl 48 25 0 8 1 0 1 1 0 8 0 ucredpl 96 410 0 398 1 0 1 1 0 8 0 zombiepl 144 1357 0 1356 1 0 1 1 0 8 0 processpl 1064 1402 0 1356 4 0 4 4 0 8 0 procpl 672 3296 0 3238 8 1 7 7 0 8 1 srpgc 96 4 0 4 2 2 0 1 0 8 0 sosppl 168 6 0 6 1 0 1 1 0 8 1 sockpl 480 1418 0 1393 38 22 16 20 0 8 12 mcl64k 65536 10 0 0 2 0 2 2 0 8 0 mcl16k 16384 5 0 0 1 0 1 1 0 8 0 mcl12k 12288 12 0 0 2 0 2 2 0 8 0 mcl9k 9216 4 0 0 1 0 1 1 0 8 0 mcl8k 8192 8 0 0 1 0 1 1 0 8 0 mcl4k 4096 13 0 0 2 0 2 2 0 8 0 mcl2k2 2112 3 0 0 1 0 1 1 0 8 0 mcl2k 2048 179 0 0 22 0 22 22 0 8 0 mtagpl 96 114 0 0 3 0 3 3 0 8 0 mbufpl 256 398 0 0 24 0 24 24 0 8 0 bufpl 288 4950 0 148 343 0 343 343 0 8 0 anonpl 24 339802 0 320922 124 5 119 120 0 186 0 amapchunkpl 152 36543 0 35675 39 2 37 37 0 158 2 amappl16 200 2847 0 2288 33 1 32 32 0 8 1 amappl15 192 237 0 229 1 0 1 1 0 8 0 amappl14 184 15 0 11 1 0 1 1 0 8 0 amappl13 176 90 0 88 1 0 1 1 0 8 0 amappl12 168 196 0 191 1 0 1 1 0 8 0 amappl11 160 47 0 31 1 0 1 1 0 8 0 amappl10 152 472 0 459 1 0 1 1 0 8 0 amappl9 144 732 0 727 1 0 1 1 0 8 0 amappl8 136 633 0 571 3 0 3 3 0 8 0 amappl7 128 128 0 117 1 0 1 1 0 8 0 amappl6 120 463 0 437 2 1 1 2 0 8 0 amappl5 112 1452 0 1431 1 0 1 1 0 8 0 amappl4 104 894 0 865 2 0 2 2 0 8 0 amappl3 96 416 0 401 1 0 1 1 0 8 0 amappl2 88 749 0 701 3 1 2 3 0 8 0 amappl1 80 27941 0 27357 19 5 14 19 0 8 0 amappl 88 15121 0 14866 7 0 7 7 0 92 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 128 253 0 253 1 1 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 72 125 0 3 3 0 3 3 0 8 0 uaddrrnd 24 1389 0 1359 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 1389 0 1359 1 0 1 1 0 8 0 vmmpekpl 168 14064 0 14019 3 0 3 3 0 8 0 vmmpepl 168 128760 0 126201 137 18 119 128 0 357 4 vmsppl 368 1388 0 1359 4 1 3 4 0 8 0 rwobjpl 56 34833 0 30201 66 0 66 66 0 8 0 pdppl 4096 2785 0 2718 129 60 69 79 0 8 2 pvpl 32 692801 0 669505 258 63 195 256 0 265 1 pmappl 248 1388 0 1359 3 1 2 3 0 8 0 extentpl 40 58 0 38 1 0 1 1 0 8 0 phpool 112 797 0 83 21 0 21 21 0 8 0 ddb{0}> machine ddbcpu 0 Invalid cpu 0 ddb{0}> trace proc_trampoline() at proc_trampoline+0xdc end of kernel end trace frame: 0x7f7ffffed3b0, count: -1 ddb{0}> machine ddbcpu 1 Stopped at x86_ipi_db+0x1a: addq $0x8,%rsp x86_ipi_db(ffff800020ce8ff0) at x86_ipi_db+0x1a sys/arch/amd64/amd64/db_interface.c:393 x86_ipi_handler() at x86_ipi_handler+0xb7 sys/arch/amd64/amd64/ipi.c:106 Xresume_lapic_ipi() at Xresume_lapic_ipi+0x23 x86_bus_space_io_write_1(3f8,0,20) at x86_bus_space_io_write_1+0x31 sys/arch/amd64/amd64/bus_space.c:759 comcnputc(800,20) at comcnputc+0x128 bus_space_barrier machine/bus.h:481 [inline] comcnputc(800,20) at comcnputc+0x128 sys/dev/ic/com.c:1263 cnputc(20) at cnputc+0x4b sys/dev/cons.c:239 db_putchar(2d) at db_putchar+0x316 db_force_whitespace sys/ddb/db_output.c:102 [inline] db_putchar(2d) at db_putchar+0x316 sys/ddb/db_output.c:153 kprintf() at kprintf+0x20ec sys/kern/subr_prf.c:1068 db_printf(ffffffff8262938c) at db_printf+0x85 sys/kern/subr_prf.c:502 fault(ffffffff825d93ee) at fault+0x95 sys/arch/amd64/amd64/trap.c:154 kpageflttrap(ffff80002e37cb80,0) at kpageflttrap+0x25a sys/arch/amd64/amd64/trap.c:275 kerntrap(ffff80002e37cb80) at kerntrap+0xef sys/arch/amd64/amd64/trap.c:318 alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b socreate(18,ffff80002e37cca8,0,29) at socreate+0x84 sys/kern/uipc_socket.c:172 end trace frame: 0xffff80002e37cd20, count: 0 ddb{1}> trace x86_ipi_db(ffff800020ce8ff0) at x86_ipi_db+0x1a sys/arch/amd64/amd64/db_interface.c:393 x86_ipi_handler() at x86_ipi_handler+0xb7 sys/arch/amd64/amd64/ipi.c:106 Xresume_lapic_ipi() at Xresume_lapic_ipi+0x23 x86_bus_space_io_write_1(3f8,0,20) at x86_bus_space_io_write_1+0x31 sys/arch/amd64/amd64/bus_space.c:759 comcnputc(800,20) at comcnputc+0x128 bus_space_barrier machine/bus.h:481 [inline] comcnputc(800,20) at comcnputc+0x128 sys/dev/ic/com.c:1263 cnputc(20) at cnputc+0x4b sys/dev/cons.c:239 db_putchar(2d) at db_putchar+0x316 db_force_whitespace sys/ddb/db_output.c:102 [inline] db_putchar(2d) at db_putchar+0x316 sys/ddb/db_output.c:153 kprintf() at kprintf+0x20ec sys/kern/subr_prf.c:1068 db_printf(ffffffff8262938c) at db_printf+0x85 sys/kern/subr_prf.c:502 fault(ffffffff825d93ee) at fault+0x95 sys/arch/amd64/amd64/trap.c:154 kpageflttrap(ffff80002e37cb80,0) at kpageflttrap+0x25a sys/arch/amd64/amd64/trap.c:275 kerntrap(ffff80002e37cb80) at kerntrap+0xef sys/arch/amd64/amd64/trap.c:318 alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b socreate(18,ffff80002e37cca8,0,29) at socreate+0x84 sys/kern/uipc_socket.c:172 sys_socket(ffff8000ffff1270,ffff80002e37cd38,ffff80002e37cd90) at sys_socket+0xd8 sys/kern/uipc_syscalls.c:96 syscall(ffff80002e37ce00) at syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff80002e37ce00) at syscall+0x489 sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x3b7f30dd9a0, count: -17