*cpu1: uvm_fault(0xfffffd806c7485d0, 0x0, 0, 1) -> e ddb{0}> trace proc_trampoline() at proc_trampoline+0xdc end of kernel end trace frame: 0x7f7ffffc6390, count: -1 ddb{0}> show registers rdi 0 rsi 0 rbp 0xffff80002e37eb20 rbx 0 rdx 0 rcx 0 rax 0x2a r8 0xffff80002e37ea50 r9 0 r10 0x34d47b394044e078 r11 0xed73aa473f43d48e r12 0 r13 0 r14 0 r15 0 rip 0xffffffff8183850c proc_trampoline+0xdc cs 0x8 rflags 0x246 rsp 0xffff80002e37eaa0 ss 0 proc_trampoline+0xdc: movl $0,%gs:0x538 ddb{0}> show proc PROC (syz-executor.6) pid=431577 stat=onproc flags process=10 proc=0 pri=83, usrpri=84, nice=20 forw=0xffffffffffffffff, list=0xffff80002120bcf0,0xffff80002120b280 process=0xffff8000fffee9b0 user=0xffff80002e379000, vmspace=0xfffffd806c748010 estcpu=34, cpticks=1, pctcpu=0.0 user=0, sys=1, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 5794 173801 36968 32767 2 0x10 syz-executor.7 5794 105229 36968 32767 7 0x4000010 syz-executor.7 84314 267484 89267 32767 2 0x10 syz-executor.5 *67039 431577 2344 32767 7 0x10 syz-executor.6 63801 343730 51938 32767 2 0x10 syz-executor.0 63801 171938 51938 32767 2 0x4000010 syz-executor.0 18133 96434 39412 32767 2 0x10 syz-executor.3 18133 62036 39412 32767 3 0x4000090 fsleep syz-executor.3 57247 45784 93036 32767 2 0x10 syz-executor.2 39412 313863 3976 32767 3 0x90 nanoslp syz-executor.3 3976 436674 32800 0 3 0x82 wait syz-executor.3 43193 383586 0 0 3 0x14200 bored sosplice 36968 340259 46280 32767 3 0x90 nanoslp syz-executor.7 2344 493803 37950 32767 3 0x90 nanoslp syz-executor.6 89267 481859 11905 32767 3 0x90 nanoslp syz-executor.5 37950 352804 32800 0 3 0x82 wait syz-executor.6 46280 515473 32800 0 3 0x82 wait syz-executor.7 11905 424257 32800 0 3 0x82 wait syz-executor.5 74948 401948 1715 32767 3 0x90 nanoslp syz-executor.4 1715 192886 32800 0 3 0x82 wait syz-executor.4 93036 207332 17559 32767 3 0x90 nanoslp syz-executor.2 51938 478404 851 32767 3 0x90 nanoslp syz-executor.0 22143 425795 72745 32767 2 0x10 syz-executor.1 17559 442688 32800 0 3 0x82 wait syz-executor.2 72745 471484 32800 0 3 0x82 wait syz-executor.1 851 226508 32800 0 3 0x82 wait syz-executor.0 32800 164823 85502 0 3 0x82 thrsleep syz-fuzzer 32800 27739 85502 0 3 0x4000082 nanoslp syz-fuzzer 32800 375505 85502 0 3 0x4000082 kqread syz-fuzzer 32800 273568 85502 0 3 0x4000082 thrsleep syz-fuzzer 32800 459055 85502 0 3 0x4000082 thrsleep syz-fuzzer 32800 403191 85502 0 3 0x4000082 thrsleep syz-fuzzer 32800 291822 85502 0 3 0x4000082 thrsleep syz-fuzzer 32800 20975 85502 0 3 0x4000082 thrsleep syz-fuzzer 32800 49520 85502 0 3 0x4000082 thrsleep syz-fuzzer 85502 66792 98454 0 3 0x10008a sigsusp ksh 98454 311801 87146 0 3 0x9a kqread sshd 68756 238011 1 0 3 0x100083 ttyin getty 87146 288143 1 0 3 0x88 kqread sshd 49231 329801 16417 73 3 0x1100090 kqread syslogd 16417 10365 1 0 3 0x100082 netio syslogd 44751 185021 1 0 3 0x100080 kqread resolvd 56257 407709 70674 77 3 0x100092 kqread dhcpleased 84090 331055 70674 77 3 0x100092 kqread dhcpleased 70674 330619 1 0 3 0x80 kqread dhcpleased 42513 257425 0 0 3 0x14200 bored smr 83232 200734 0 0 2 0x14200 zerothread 63444 280265 0 0 3 0x14200 aiodoned aiodoned 1123 266904 0 0 3 0x14200 syncer update 91985 57939 0 0 3 0x14200 cleaner cleaner 84699 291808 0 0 3 0x14200 reaper reaper 91145 334884 0 0 3 0x14200 pgdaemon pagedaemon 73944 210807 0 0 3 0x14200 bored viomb 30299 184622 0 0 3 0x40014200 acpi0 acpi0 22858 438997 0 0 3 0x40014200 idle1 11411 141839 0 0 3 0x14200 bored softnet 76141 343023 0 0 3 0x14200 bored systqmp 32260 335515 0 0 3 0x14200 bored systq 93770 247564 0 0 3 0x40014200 bored softclock 38732 55423 0 0 3 0x40014200 idle0 1 133236 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks CPU 0: exclusive mutex anonpl r = 0 (0xffffffff82a9a348) #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 uvm_analloc+0x29 sys/uvm/uvm_anon.c:63 #5 uvm_fault_lower+0x17c sys/uvm/uvm_fault.c:1381 #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 5794 (syz-executor.7) thread 0xffff80002120ba50 (105229) exclusive kernel_lock &kernel_lock r = 0 (0xffffffff82abcc60) #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_socketpair+0x6e sys/kern/uipc_syscalls.c:430 #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 Process 67039 (syz-executor.6) thread 0xffff80002120a2b0 (431577) exclusive rwlock amaplk r = 0 (0xfffffd8066d5b2f0) #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 (0xfffffd806c748028) #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 anonpl r = 0 (0xffffffff82a9a348) #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 uvm_analloc+0x29 sys/uvm/uvm_anon.c:63 #5 uvm_fault_lower+0x17c sys/uvm/uvm_fault.c:1381 #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 ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10205 6411K 6419K 78643K 11303 0 pcb 13 10K 12K 78643K 15 0 rtable 254 7K 7K 78643K 469 0 ifaddr 81 16K 16K 78643K 96 0 sysctl 2 0K 0K 78643K 2 0 counters 56 35K 35K 78643K 60 0 ioctlops 0 0K 2K 78643K 55 0 iov 0 0K 16K 78643K 314 0 mount 1 1K 1K 78643K 1 0 log 0 0K 0K 78643K 5 0 vnodes 1271 79K 79K 78643K 2644 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 5K 78643K 44 0 VM map 2 1K 1K 78643K 2 0 sem 12 0K 0K 78643K 516 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1697 195K 286K 78643K 12548 0 file desc 24 89K 117K 78643K 3271 0 sigio 0 0K 0K 78643K 3 0 proc 56 74K 111K 78643K 614 0 subproc 104 6K 6K 78643K 130 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 0 0K 0K 78643K 241 0 in_multi 99 6K 6K 78643K 180 0 ether_multi 1 0K 0K 78643K 15 0 mrt 2 0K 0K 78643K 2 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 247 1102K 1102K 78643K 247 0 exec 0 0K 2K 78643K 941 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 351 87K 102K 78643K 43881 0 UVM aobj 131 4K 4K 78643K 131 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 103 0 NDP 11 0K 2K 78643K 33 0 temp 125 4703K 4767K 78643K 11254 0 kqueue 12 18K 24K 78643K 225 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 120 234 0 231 5 4 1 3 0 8 0 rtentry 112 144 0 26 4 0 4 4 0 8 0 unpcb 136 2466 0 2453 24 18 6 6 0 8 5 syncache 296 32 0 32 6 6 0 1 0 8 0 tcpqe 32 722 0 722 4 4 0 1 0 8 0 tcpcb 736 2627 0 2617 54 47 7 20 0 8 5 arp 120 23 0 4 1 0 1 1 0 8 0 ipq 40 5 0 4 2 1 1 1 0 8 0 ipqe 40 17 0 16 2 1 1 1 0 8 0 inpcb 304 3741 0 3730 35 29 6 12 0 8 4 rttmr 72 8 0 6 1 0 1 1 0 8 0 nd6 48 38 0 9 1 0 1 1 0 8 0 kcovpl 48 10 0 2 1 0 1 1 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 626 0 104 34 1 33 33 0 8 0 art_table 32 627 0 104 5 0 5 5 0 8 0 art_node 16 143 0 35 1 0 1 1 0 8 0 sysvmsgpl 40 36 0 34 1 0 1 1 0 8 0 semapl 112 514 0 504 1 0 1 1 0 8 0 shmpl 112 128 0 0 4 0 4 4 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 6372 0 4936 91 0 91 91 0 8 0 ffsino 272 6372 0 4936 97 0 97 97 0 8 0 nchpl 144 10791 0 9169 62 0 62 62 0 8 0 uvmvnodes 80 5926 0 0 121 0 121 121 0 8 0 vnodes 224 5926 0 0 349 0 349 349 0 8 0 namei 1024 38905 0 38905 3 2 1 2 0 8 1 percpumem 16 42 0 2 1 0 1 1 0 8 0 scxspl 216 27764 0 27764 18 17 1 7 0 8 1 plimitpl 152 862 0 840 4 3 1 2 0 8 0 sigapl 424 3541 0 3490 7 0 7 7 0 8 0 futexpl 64 31359 0 31358 2 1 1 1 0 8 0 knotepl 120 190 0 0 6 0 6 6 0 8 0 kqueuepl 216 3003 0 2995 27 21 6 6 0 8 5 pipepl 336 549 0 521 17 12 5 8 0 8 2 fdescpl 496 3526 0 3491 7 1 6 6 0 8 0 filepl 152 28423 0 28189 50 33 17 19 0 8 7 lockfpl 104 319 0 317 1 0 1 1 0 8 0 lockfspl 48 129 0 127 1 0 1 1 0 8 0 sessionpl 144 25 0 9 1 0 1 1 0 8 0 pgrppl 48 310 0 294 1 0 1 1 0 8 0 ucredpl 96 9007 0 8989 1 0 1 1 0 8 0 zombiepl 144 3491 0 3490 1 0 1 1 0 8 0 processpl 1064 3541 0 3490 5 1 4 4 0 8 0 procpl 672 10192 0 10130 11 3 8 8 0 8 1 sosppl 168 46 0 46 4 3 1 1 0 8 1 sockpl 480 7339 0 7313 121 108 13 28 0 8 8 mcl64k 65536 18 0 0 3 0 3 3 0 8 0 mcl16k 16384 25 0 0 4 1 3 3 0 8 0 mcl12k 12288 20 0 0 2 0 2 2 0 8 0 mcl9k 9216 10 0 0 1 0 1 1 0 8 0 mcl8k 8192 17 0 0 3 0 3 3 0 8 0 mcl4k 4096 26 0 0 3 0 3 3 0 8 0 mcl2k2 2112 5 0 0 1 0 1 1 0 8 0 mcl2k 2048 229 0 0 28 0 28 28 0 8 0 mtagpl 96 3 0 0 1 0 1 1 0 8 0 mbufpl 256 765 0 0 43 0 43 43 0 8 0 bufpl 288 8204 0 1869 453 0 453 453 0 8 0 anonpl 24 959519 0 945646 158 49 109 117 0 186 13 amapchunkpl 152 118975 0 118227 74 38 36 47 0 158 2 amappl16 200 8961 0 8579 58 28 30 33 0 8 8 amappl15 192 466 0 460 1 0 1 1 0 8 0 amappl14 184 11 0 9 1 0 1 1 0 8 0 amappl13 176 1280 0 1271 1 0 1 1 0 8 0 amappl12 168 23 0 22 1 0 1 1 0 8 0 amappl11 160 42 0 31 1 0 1 1 0 8 0 amappl10 152 839 0 829 1 0 1 1 0 8 0 amappl9 144 780 0 777 1 0 1 1 0 8 0 amappl8 136 1211 0 1129 3 0 3 3 0 8 0 amappl7 128 626 0 610 1 0 1 1 0 8 0 amappl6 120 526 0 504 2 1 1 2 0 8 0 amappl5 112 3102 0 3080 1 0 1 1 0 8 0 amappl4 104 891 0 866 2 0 2 2 0 8 0 amappl3 96 1515 0 1497 1 0 1 1 0 8 0 amappl2 88 1866 0 1812 3 1 2 3 0 8 0 amappl1 80 66466 0 65859 19 4 15 18 0 8 1 amappl 88 43274 0 43027 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 72 130 0 0 3 0 3 3 0 8 0 uaddrrnd 24 3526 0 3491 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 3526 0 3491 1 0 1 1 0 8 0 vmmpekpl 168 30267 0 30218 3 0 3 3 0 8 0 vmmpepl 168 324293 0 321683 159 28 131 131 0 357 11 vmsppl 368 3525 0 3491 4 0 4 4 0 8 0 rwobjpl 56 85888 0 78511 108 0 108 108 0 8 1 pdppl 4096 7059 0 6982 160 79 81 93 0 8 4 pvpl 32 1669610 0 1650587 291 102 189 245 0 265 20 pmappl 248 3525 0 3491 4 1 3 3 0 8 0 extentpl 40 58 0 38 1 0 1 1 0 8 0 phpool 112 1004 0 144 25 0 25 25 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: 0x7f7ffffc6390, 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,a) at x86_bus_space_io_write_1+0x31 sys/arch/amd64/amd64/bus_space.c:759 comcnputc(800,a) at comcnputc+0x128 bus_space_barrier machine/bus.h:481 [inline] comcnputc(800,a) at comcnputc+0x128 sys/dev/ic/com.c:1263 cnputc(a) at cnputc+0x4b sys/dev/cons.c:239 db_putchar(a) at db_putchar+0x4bd sys/ddb/db_output.c:168 kprintf() at kprintf+0x6ac sys/kern/subr_prf.c:728 db_printf(ffffffff82628fa1) at db_printf+0x85 sys/kern/subr_prf.c:502 fault(ffffffff825d8c9e) at fault+0x95 sys/arch/amd64/amd64/trap.c:154 kpageflttrap(ffff80002e3a6830,0) at kpageflttrap+0x25a sys/arch/amd64/amd64/trap.c:275 kerntrap(ffff80002e3a6830) at kerntrap+0xef sys/arch/amd64/amd64/trap.c:318 alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b socreate(18,ffff80002e3a6960,0,29) at socreate+0x84 sys/kern/uipc_socket.c:172 end trace frame: 0xffff80002e3a69e0, 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,a) at x86_bus_space_io_write_1+0x31 sys/arch/amd64/amd64/bus_space.c:759 comcnputc(800,a) at comcnputc+0x128 bus_space_barrier machine/bus.h:481 [inline] comcnputc(800,a) at comcnputc+0x128 sys/dev/ic/com.c:1263 cnputc(a) at cnputc+0x4b sys/dev/cons.c:239 db_putchar(a) at db_putchar+0x4bd sys/ddb/db_output.c:168 kprintf() at kprintf+0x6ac sys/kern/subr_prf.c:728 db_printf(ffffffff82628fa1) at db_printf+0x85 sys/kern/subr_prf.c:502 fault(ffffffff825d8c9e) at fault+0x95 sys/arch/amd64/amd64/trap.c:154 kpageflttrap(ffff80002e3a6830,0) at kpageflttrap+0x25a sys/arch/amd64/amd64/trap.c:275 kerntrap(ffff80002e3a6830) at kerntrap+0xef sys/arch/amd64/amd64/trap.c:318 alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b socreate(18,ffff80002e3a6960,0,29) at socreate+0x84 sys/kern/uipc_socket.c:172 sys_socketpair(ffff80002120ba50,ffff80002e3a69f8,ffff80002e3a6a50) at sys_socketpair+0x6e sys/kern/uipc_syscalls.c:430 syscall(ffff80002e3a6ac0) at syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff80002e3a6ac0) at syscall+0x489 sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xce53afca580, count: -17