panic: acquiring blockable sleep lock with spinlock or critical section held (rwlock) vmmaplk Stopped at db_enter+0x25: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND * 45984 23330 32767 0x10 0x4000000 0 syz-executor 95111 30801 32767 0x10 0 1 syz-executor db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff83074cb8) at panic+0x1e5 sys/kern/subr_prf.c:198 witness_checkorder(fffffd80551417e0,1,0) at witness_checkorder+0x1113 sys/kern/subr_witness.c:843 rw_enter(fffffd80551417d0,2) at rw_enter+0x122 uvmfault_lookup(ffff800035fc5a60,0) at uvmfault_lookup+0x122 sys/uvm/uvm_fault.c:1785 uvm_fault_check(ffff800035fc5a60,ffff800035fc5a98,ffff800035fc5ac0) at uvm_fault_check+0x47 sys/uvm/uvm_fault.c:672 uvm_fault(fffffd80551416f0,20000000,0,2) at uvm_fault+0x112 sys/uvm/uvm_fault.c:600 kpageflttrap(ffff800035fc5c00,20000118) at kpageflttrap+0x2d0 sys/arch/amd64/amd64/trap.c:279 kerntrap(ffff800035fc5c00) at kerntrap+0x14a sys/arch/amd64/amd64/trap.c:332 alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b copyout() at copyout+0x62 kern_sysctl(ffff800035fc5f84,5,20000100,ffff800035fc5fb8,0,37,217ee3771e079fbb) at kern_sysctl+0x320 sys/kern/kern_sysctl.c:500 sys_sysctl(ffff8000361bd6f8,ffff800035fc60f0,ffff800035fc6040) at sys_sysctl+0x422 syscall(ffff800035fc60f0) at syscall+0xbb6 mi_syscall sys/sys/syscall_mi.h:179 [inline] syscall(ffff800035fc60f0) at syscall+0xbb6 sys/arch/amd64/amd64/trap.c:577 end trace frame: 0xffff800035fc6170, count: 0 https://www.openbsd.org/ddb.html describes the minimum info required in bug reports. Insufficient info makes it difficult to find and fix bugs. ddb{0}> ddb{0}> set $lines = 0 ddb{0}> set $maxwidth = 0 ddb{0}> show panic *cpu0: acquiring blockable sleep lock with spinlock or critical section held (rwlock) vmmaplk ddb{0}> trace db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff83074cb8) at panic+0x1e5 sys/kern/subr_prf.c:198 witness_checkorder(fffffd80551417e0,1,0) at witness_checkorder+0x1113 sys/kern/subr_witness.c:843 rw_enter(fffffd80551417d0,2) at rw_enter+0x122 uvmfault_lookup(ffff800035fc5a60,0) at uvmfault_lookup+0x122 sys/uvm/uvm_fault.c:1785 uvm_fault_check(ffff800035fc5a60,ffff800035fc5a98,ffff800035fc5ac0) at uvm_fault_check+0x47 sys/uvm/uvm_fault.c:672 uvm_fault(fffffd80551416f0,20000000,0,2) at uvm_fault+0x112 sys/uvm/uvm_fault.c:600 kpageflttrap(ffff800035fc5c00,20000118) at kpageflttrap+0x2d0 sys/arch/amd64/amd64/trap.c:279 kerntrap(ffff800035fc5c00) at kerntrap+0x14a sys/arch/amd64/amd64/trap.c:332 alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b copyout() at copyout+0x62 kern_sysctl(ffff800035fc5f84,5,20000100,ffff800035fc5fb8,0,37,217ee3771e079fbb) at kern_sysctl+0x320 sys/kern/kern_sysctl.c:500 sys_sysctl(ffff8000361bd6f8,ffff800035fc60f0,ffff800035fc6040) at sys_sysctl+0x422 syscall(ffff800035fc60f0) at syscall+0xbb6 mi_syscall sys/sys/syscall_mi.h:179 [inline] syscall(ffff800035fc60f0) at syscall+0xbb6 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x679d76b6f00, count: -15 ddb{0}> show registers rdi 0 rsi 0x1 rbp 0xffff800035fc5660 rbx 0xffffffff83493dbf cpu_info_full_primary+0x2dbf rdx 0 rcx 0xffff8000361bd6f8 rax 0xffffffff83492ff0 cpu_info_full_primary+0x1ff0 r8 0x101010101010101 r9 0x8080808080808080 r10 0xe2379c0a5701d3b9 r11 0xbac5bb6815bc6c14 r12 0xffffffff83493bc0 cpu_info_full_primary+0x2bc0 r13 0 r14 0 r15 0x1 rip 0xffffffff82fb1b75 db_enter+0x25 cs 0x8 rflags 0x246 rsp 0xffff800035fc5650 ss 0x10 db_enter+0x25: addq $0x8,%rsp ddb{0}> show proc PROC (syz-executor) tid=45984 pid=23330 tcnt=4 stat=onproc flags process=10 proc=4000000 runpri=32, usrpri=50, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff8000361bdc08,0xffff8000361bd990 process=0xffff80002a0956a8 user=0xffff800035fc1000, vmspace=0xfffffd80551416f0 estcpu=36, cpticks=1, pctcpu=0.0, user=0, sys=1, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 42493 76526 25599 32767 2 0x10 syz-executor 42493 227420 25599 32767 3 0x4000090 fsleep syz-executor 34576 254358 8136 0 2 0x2 ifconfig 8136 374015 1840 0 3 0x10008a sigsusp sh 23330 502393 99464 32767 2 0x10 syz-executor *23330 45984 99464 32767 7 0x4000010 syz-executor 23330 289708 99464 32767 3 0x4000090 fsleep syz-executor 23330 129989 99464 32767 3 0x4000090 fsleep syz-executor 79651 8496 99177 32767 2 0x10 syz-executor 79651 375255 99177 32767 3 0x4000090 lockf syz-executor 79651 37249 99177 32767 3 0x4000090 lockf syz-executor 79651 495029 99177 32767 3 0x4000090 kqsel syz-executor 25679 153535 3201 32767 2 0x10 syz-executor 25679 253696 3201 32767 3 0x4000090 ttyin syz-executor 25679 111397 3201 32767 3 0x4000090 sbwait syz-executor 1840 394393 37685 0 3 0x80 wait syz-executor 37685 395303 46698 0 3 0x82 wait syz-executor 19629 355575 87675 32767 3 0x90 nanoslp syz-executor 19629 190316 87675 32767 3 0x4000090 sbwait syz-executor 19629 214975 87675 32767 3 0x4000090 fsleep syz-executor 99177 235198 99902 32767 3 0x90 nanoslp syz-executor 99902 420964 46698 0 3 0x82 wait syz-executor 25599 395203 28143 32767 3 0x90 nanoslp syz-executor 28143 462681 46698 0 3 0x82 wait syz-executor 30801 95111 41879 32767 7 0x10 syz-executor 41879 183441 46698 0 3 0x82 wait syz-executor 99464 432362 94520 32767 3 0x90 nanoslp syz-executor 94520 303144 46698 0 3 0x82 wait syz-executor 3201 474351 49822 32767 3 0x90 nanoslp syz-executor 49822 166832 46698 0 3 0x82 wait syz-executor 87675 383280 89703 32767 3 0x90 nanoslp syz-executor 89703 443083 46698 0 3 0x82 wait syz-executor 38264 73419 63464 32767 3 0x90 wait syz-executor 63464 315900 46698 0 3 0x82 wait syz-executor 12132 491515 39074 0 3 0x82 netio sshd-session 93395 474827 52594 0 3 0x100082 sbwait arp 52594 39598 81470 0 3 0x10008a sigsusp sh 81470 201620 1 0 3 0x80 wait syz-executor 45969 281259 0 0 3 0x14200 bored sosplice 46698 375302 44782 0 2 0x2 syz-executor 44782 217138 47901 0 3 0x10008a sigsusp ksh 47901 40729 17378 0 3 0x98 kqread sshd-session 17378 519068 39074 0 3 0x92 kqread sshd-session 29029 57159 1 0 3 0x100083 ttyin getty 39074 473479 1 0 3 0x88 kqread sshd 82209 154630 37333 73 3 0x1100090 kqread syslogd 37333 427401 1 0 3 0x100082 sbwait syslogd 25665 411123 1 0 3 0x100080 kqread resolvd 52708 151111 62696 77 3 0x100092 kqread dhcpleased 99591 249360 62696 77 3 0x100092 kqread dhcpleased 62696 400297 1 0 3 0x80 kqread dhcpleased 8447 90294 0 0 3 0x14200 bored smr 80890 75591 0 0 2 0x14200 zerothread 57563 34231 0 0 3 0x14200 aiodoned aiodoned 71861 295977 0 0 3 0x14200 syncer update 97173 415286 0 0 3 0x14200 cleaner cleaner 45400 357889 0 0 3 0x14200 reaper reaper 8046 198988 0 0 3 0x14200 pgdaemon pagedaemon 15051 354888 0 0 3 0x14200 bored viomb 69682 365433 0 0 3 0x40014200 acpi0 acpi0 39163 446757 0 0 3 0x40014200 idle1 49221 4901 0 0 3 0x14200 bored softnet3 97556 182592 0 0 3 0x14200 bored softnet2 5349 302285 0 0 3 0x14200 bored softnet1 84399 38292 0 0 3 0x14200 bored softnet0 47435 148021 0 0 3 0x14200 bored systqmp 13397 149081 0 0 3 0x14200 bored systq 69321 318499 0 0 3 0x14200 tmoslp softclockmp 86639 458120 0 0 3 0x40014200 tmoslp softclock 63020 322416 0 0 3 0x40014200 idle0 1 361631 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks CPU 0: exclusive mutex &table->inpt_mtx r = 0 (0xffffffff8353c308) #0 witness_lock+0x5bb stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5bb sys/kern/subr_witness.c:1155 #1 mtx_enter_try+0x178 #2 mtx_enter+0x60 sys/kern/kern_lock.c:239 #3 sysctl_file+0xa2d #4 kern_sysctl+0x320 sys/kern/kern_sysctl.c:500 #5 sys_sysctl+0x422 #6 syscall+0xbb6 mi_syscall sys/sys/syscall_mi.h:179 [inline] #6 syscall+0xbb6 sys/arch/amd64/amd64/trap.c:577 #7 Xsyscall+0x128 Process 23330 (syz-executor) thread 0xffff8000361bd6f8 (45984) exclusive rwlock netlock r = 0 (0xffffffff834b12c0) #0 witness_lock+0x5bb stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5bb sys/kern/subr_witness.c:1155 #1 sysctl_file+0xa18 sys/kern/kern_sysctl.c:1675 #2 kern_sysctl+0x320 sys/kern/kern_sysctl.c:500 #3 sys_sysctl+0x422 #4 syscall+0xbb6 mi_syscall sys/sys/syscall_mi.h:179 [inline] #4 syscall+0xbb6 sys/arch/amd64/amd64/trap.c:577 #5 Xsyscall+0x128 exclusive kernel_lock &kernel_lock r = 0 (0xffffffff83538ca0) #0 witness_lock+0x5bb stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5bb sys/kern/subr_witness.c:1155 #1 sysctl_vslock+0x80 sys/kern/kern_sysctl.c:181 #2 kern_sysctl+0x1b3 sys/kern/kern_sysctl.c:498 #3 sys_sysctl+0x422 #4 syscall+0xbb6 mi_syscall sys/sys/syscall_mi.h:179 [inline] #4 syscall+0xbb6 sys/arch/amd64/amd64/trap.c:577 #5 Xsyscall+0x128 exclusive rwlock sysctllk r = 0 (0xffffffff834bab50) #0 witness_lock+0x5bb stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5bb sys/kern/subr_witness.c:1155 #1 rw_enter+0x41b sys/kern/kern_rwlock.c:309 #2 sysctl_vslock+0x45 sys/kern/kern_sysctl.c:176 #3 kern_sysctl+0x1b3 sys/kern/kern_sysctl.c:498 #4 sys_sysctl+0x422 #5 syscall+0xbb6 mi_syscall sys/sys/syscall_mi.h:179 [inline] #5 syscall+0xbb6 sys/arch/amd64/amd64/trap.c:577 #6 Xsyscall+0x128 exclusive mutex &table->inpt_mtx r = 0 (0xffffffff8353c308) #0 witness_lock+0x5bb stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5bb sys/kern/subr_witness.c:1155 #1 mtx_enter_try+0x178 #2 mtx_enter+0x60 sys/kern/kern_lock.c:239 #3 sysctl_file+0xa2d #4 kern_sysctl+0x320 sys/kern/kern_sysctl.c:500 #5 sys_sysctl+0x422 #6 syscall+0xbb6 mi_syscall sys/sys/syscall_mi.h:179 [inline] #6 syscall+0xbb6 sys/arch/amd64/amd64/trap.c:577 #7 Xsyscall+0x128 Process 23330 (syz-executor) thread 0xffff8000361bd980 (289708) exclusive rwlock vmmaplk r = 0 (0xfffffd80551417e0) #0 witness_lock+0x5bb stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5bb sys/kern/subr_witness.c:1155 #1 rw_enter+0x41b sys/kern/kern_rwlock.c:309 #2 vm_map_lock_ln+0x143 sys/uvm/uvm_map.c:5252 #3 uvm_map_protect+0xe1 sys/uvm/uvm_map.c:3059 #4 sys_mprotect+0x34c sys/uvm/uvm_mmap.c:585 #5 syscall+0xbb6 mi_syscall sys/sys/syscall_mi.h:179 [inline] #5 syscall+0xbb6 sys/arch/amd64/amd64/trap.c:577 #6 Xsyscall+0x128 Process 25679 (syz-executor) thread 0xffff80002a0a05b0 (111397) exclusive rwlock sbufrcv r = 0 (0xffff800010f8fd88) #0 witness_lock+0x5bb stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5bb sys/kern/subr_witness.c:1155 #1 rw_enter+0x41b sys/kern/kern_rwlock.c:309 #2 sblock+0xb7 sys/kern/uipc_socket2.c:549 #3 soreceive+0x295 sys/kern/uipc_socket.c:947 #4 recvit+0x40a sys/kern/uipc_syscalls.c:1082 #5 sys_recvmmsg+0x3d3 sys/kern/uipc_syscalls.c:973 #6 syscall+0xbb6 mi_syscall sys/sys/syscall_mi.h:179 [inline] #6 syscall+0xbb6 sys/arch/amd64/amd64/trap.c:577 #7 Xsyscall+0x128 ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10226 11053K 11059K 166960K 13352 0 pcb 17 28K 32K 166960K 29 0 rtable 232 6K 7K 166960K 23880 0 pf 31 16K 16K 166960K 1410 0 ifaddr 41 15K 19K 166960K 2781 0 ifgroup 50 2K 2K 166960K 2793 0 sysctl 4 1K 5K 166960K 29 0 counters 64 36K 36K 166960K 1428 0 ioctlops 0 0K 2K 166960K 1583 0 iov 1 4K 32K 166960K 3100 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1469 92K 92K 166960K 17811 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 13K 166960K 692 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 1K 166960K 2381 0 dirhash 21 4K 5K 166960K 882 0 ACPI 1690 195K 286K 166960K 12468 0 file desc 29 109K 185K 166960K 41096 0 sigio 0 0K 0K 166960K 1499 0 proc 68 103K 176K 166960K 22909 0 subproc 117 7K 13K 166960K 10894 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 8138 0 in_multi 95 7K 8K 166960K 9131 0 ether_multi 1 0K 0K 166960K 248 0 mrt 1 0K 0K 166960K 18 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 325 1447K 1447K 166960K 325 0 exec 0 0K 1K 166960K 15825 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 302 85K 143K 166960K 347371 0 UVM aobj 131 4K 8K 166960K 145 0 pinsyscall 53 106K 140K 166960K 61267 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 1K 166960K 2964 0 NDP 12 0K 2K 166960K 2070 0 temp 80 6825K 6952K 166960K 285466 0 kqueue 13 20K 34K 166960K 6300 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 24 0 0 1 0 1 1 0 8 0 rtpcb 120 5810 0 5805 36 35 1 3 0 8 0 rtentry 112 8037 0 7928 16 12 4 4 0 8 0 unpcb 144 39917 0 39897 192 188 4 14 0 8 3 syncache 336 797 0 796 39 38 1 1 0 8 0 tcpqe 32 384 0 384 46 45 1 1 0 8 1 tcpcb 808 24746 0 24648 265 248 17 25 0 8 0 arp 120 1400 0 1381 1 0 1 1 0 8 0 ipq 40 199 0 197 9 8 1 1 0 8 0 ipqe 40 3162 0 3160 9 8 1 1 0 8 0 inpcb 336 55706 0 55602 264 249 15 28 0 8 0 ip6q 72 8 0 8 8 8 0 1 0 8 0 ip6af 40 16 0 16 8 8 0 1 0 8 0 nd6 136 2479 0 2457 14 12 2 2 0 8 1 kcovpl 48 838 0 829 1 0 1 1 0 8 0 rttmr 136 2 0 1 2 1 1 1 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 32108 0 31659 198 168 30 32 0 8 0 art_table 32 32109 0 31659 11 7 4 5 0 8 0 art_node 16 8036 0 7936 1 0 1 1 0 8 0 sysvmsgpl 40 12 0 7 1 0 1 1 0 8 0 semupl 112 4 0 4 4 4 0 1 0 8 0 semapl 112 2368 0 2358 1 0 1 1 0 8 0 shmpl 112 142 0 14 4 0 4 4 0 8 0 dirhash 1024 612 0 581 24 19 5 5 0 8 1 dino2pl 256 51346 0 47322 253 1 252 252 0 8 0 ffsino 272 51346 0 47322 270 1 269 269 0 8 0 nchpl 144 94818 0 91628 120 1 119 119 0 8 0 uvmvnodes 80 10927 0 0 223 0 223 223 0 8 0 vnodes 216 10927 0 0 608 0 608 608 0 8 0 namei 1024 411630 0 411630 56 55 1 2 0 8 1 percpumem 16 728 0 682 1 0 1 1 0 8 0 kstatmem 264 1386 0 1364 4 2 2 2 0 8 0 scxspl 216 415999 0 415999 108 106 2 8 1 8 2 plimitpl 152 13740 0 13713 2 0 2 2 0 8 0 sigapl 424 40004 0 39943 29 21 8 9 0 8 0 futexpl 64 459504 0 459500 28 27 1 1 0 8 0 knotepl 120 1971 0 0 20 2 18 18 0 8 0 kqueuepl 216 14031 0 14021 130 128 2 8 0 8 1 pipepl 320 8471 0 8440 104 100 4 9 0 8 0 fdescpl 496 39985 0 39943 21 15 6 8 0 8 0 filepl 152 282125 0 281841 212 198 14 27 0 8 0 lockfpl 104 11200 0 11194 8 7 1 2 0 8 0 lockfspl 48 3463 0 3460 1 0 1 1 0 8 0 sessionpl 144 991 0 973 1 0 1 1 0 8 0 pgrppl 48 2780 0 2754 1 0 1 1 0 8 0 ucredpl 104 54360 0 54342 1 0 1 1 0 8 0 zombiepl 144 39944 0 39943 1 0 1 1 0 8 0 processpl 1160 40004 0 39943 6 1 5 6 0 8 0 procpl 648 91773 0 91701 22 15 7 8 0 8 0 srpgc 96 41 0 41 16 16 0 1 0 8 0 sosppl 168 480 0 475 12 11 1 1 0 8 0 sockpl 664 102347 0 102219 430 412 18 39 0 8 0 mcl64k 65536 57 0 0 6 0 6 6 0 8 0 mcl16k 16384 5 0 0 1 0 1 1 0 8 0 mcl12k 12288 4 0 0 1 0 1 1 0 8 0 mcl9k 9216 4 0 0 1 0 1 1 0 8 0 mcl8k 8192 27 0 0 3 0 3 3 0 8 0 mcl4k 4096 276 0 0 18 5 13 18 0 8 0 mcl2k2 2112 10 0 0 1 0 1 1 0 8 0 mcl2k 2048 602 0 0 21 15 6 11 0 8 0 mtagpl 96 14 0 0 1 0 1 1 0 8 0 mbufpl 256 3888 0 0 164 0 164 164 0 8 0 bufpl 280 67039 0 56111 781 0 781 781 0 8 0 anonpl 24 4785250 0 4772225 645 514 131 138 0 185 24 amapchunkpl 152 1131993 0 1131120 389 340 49 55 0 158 9 amappl16 200 105495 0 105144 523 484 39 53 0 8 8 amappl15 192 21 0 21 12 12 0 1 0 8 0 amappl14 184 2056 0 2044 1 0 1 1 0 8 0 amappl13 176 34 0 33 2 1 1 1 0 8 0 amappl12 168 51872 0 51829 10 7 3 3 0 8 0 amappl11 160 48 0 38 1 0 1 1 0 8 0 amappl10 152 7 0 7 2 2 0 1 0 8 0 amappl9 144 126 0 125 2 1 1 1 0 8 0 amappl8 136 29 0 27 1 0 1 1 0 8 0 amappl7 128 1801 0 1788 1 0 1 1 0 8 0 amappl6 120 6980 0 6975 1 0 1 1 0 8 0 amappl5 112 3148 0 3135 1 0 1 1 0 8 0 amappl4 104 3511 0 3493 1 0 1 1 0 8 0 amappl3 96 231689 0 231545 5 0 5 5 0 8 0 amappl2 88 13638 0 13562 5 2 3 3 0 8 0 amappl1 80 244001 0 243346 42 23 19 22 0 8 0 amappl 88 337737 0 337498 8 1 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 72 144 0 14 3 0 3 3 0 8 0 uaddrrnd 24 39985 0 39943 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 39985 0 39943 1 0 1 1 0 8 0 vmmpekpl 168 299897 0 299835 8 4 4 6 0 8 0 vmmpepl 168 2552460 0 2549851 564 429 135 209 0 357 4 vmsppl 440 39984 0 39943 23 17 6 7 0 8 0 rwobjpl 56 651387 0 638928 231 49 182 183 0 8 2 pdppl 4096 79977 0 79886 1782 1689 93 127 0 8 2 pvpl 32 48726 0 0 385 0 385 385 0 265 0 pmappl 248 39984 0 39943 12 8 4 4 0 8 0 extentpl 40 55 0 38 1 0 1 1 0 8 0 phpool 112 3368 0 2490 26 0 26 26 0 8 0 ddb{0}> machine ddbcpu 0 Invalid cpu 0 ddb{0}> trace db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff83074cb8) at panic+0x1e5 sys/kern/subr_prf.c:198 witness_checkorder(fffffd80551417e0,1,0) at witness_checkorder+0x1113 sys/kern/subr_witness.c:843 rw_enter(fffffd80551417d0,2) at rw_enter+0x122 uvmfault_lookup(ffff800035fc5a60,0) at uvmfault_lookup+0x122 sys/uvm/uvm_fault.c:1785 uvm_fault_check(ffff800035fc5a60,ffff800035fc5a98,ffff800035fc5ac0) at uvm_fault_check+0x47 sys/uvm/uvm_fault.c:672 uvm_fault(fffffd80551416f0,20000000,0,2) at uvm_fault+0x112 sys/uvm/uvm_fault.c:600 kpageflttrap(ffff800035fc5c00,20000118) at kpageflttrap+0x2d0 sys/arch/amd64/amd64/trap.c:279 kerntrap(ffff800035fc5c00) at kerntrap+0x14a sys/arch/amd64/amd64/trap.c:332 alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b copyout() at copyout+0x62 kern_sysctl(ffff800035fc5f84,5,20000100,ffff800035fc5fb8,0,37,217ee3771e079fbb) at kern_sysctl+0x320 sys/kern/kern_sysctl.c:500 sys_sysctl(ffff8000361bd6f8,ffff800035fc60f0,ffff800035fc6040) at sys_sysctl+0x422 syscall(ffff800035fc60f0) at syscall+0xbb6 mi_syscall sys/sys/syscall_mi.h:179 [inline] syscall(ffff800035fc60f0) at syscall+0xbb6 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x679d76b6f00, count: -15 ddb{0}> machine ddbcpu 1 Stopped at x86_ipi_db+0x27: addq $0x8,%rsp x86_ipi_db(ffff800029b7bff0) at x86_ipi_db+0x27 sys/arch/amd64/amd64/db_interface.c:393 x86_ipi_handler() at x86_ipi_handler+0xd9 sys/arch/amd64/amd64/ipi.c:106 Xresume_lapic_ipi() at Xresume_lapic_ipi+0x27 __mp_lock(ffffffff83538a98) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:113 [inline] __mp_lock(ffffffff83538a98) at __mp_lock+0x192 sys/kern/kern_lock.c:144 syscall(ffff8000371c34e0) at syscall+0xad6 mi_syscall sys/sys/syscall_mi.h:179 [inline] syscall(ffff8000371c34e0) at syscall+0xad6 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x766d2b6918a0, count: 9 ddb{1}> trace x86_ipi_db(ffff800029b7bff0) at x86_ipi_db+0x27 sys/arch/amd64/amd64/db_interface.c:393 x86_ipi_handler() at x86_ipi_handler+0xd9 sys/arch/amd64/amd64/ipi.c:106 Xresume_lapic_ipi() at Xresume_lapic_ipi+0x27 __mp_lock(ffffffff83538a98) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:113 [inline] __mp_lock(ffffffff83538a98) at __mp_lock+0x192 sys/kern/kern_lock.c:144 syscall(ffff8000371c34e0) at syscall+0xad6 mi_syscall sys/sys/syscall_mi.h:179 [inline] syscall(ffff8000371c34e0) at syscall+0xad6 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x766d2b6918a0, count: -6