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 *485379 89961 32767 0x10 0x4000000 0 syz-executor 126643 89961 32767 0x10 0x4000000 1 syz-executor db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff830727f4) at panic+0x1e5 sys/kern/subr_prf.c:198 witness_checkorder(fffffd806c21c7e8,1,0) at witness_checkorder+0x1113 sys/kern/subr_witness.c:843 rw_enter(fffffd806c21c7d8,2) at rw_enter+0x122 uvmfault_lookup(ffff800031f95c10,0) at uvmfault_lookup+0x122 sys/uvm/uvm_fault.c:1785 uvm_fault_check(ffff800031f95c10,ffff800031f95c48,ffff800031f95c70) at uvm_fault_check+0x47 sys/uvm/uvm_fault.c:672 uvm_fault(fffffd806c21c6f8,20000000,0,2) at uvm_fault+0x112 sys/uvm/uvm_fault.c:600 kpageflttrap(ffff800031f95db0,200002b0) at kpageflttrap+0x2d0 sys/arch/amd64/amd64/trap.c:279 kerntrap(ffff800031f95db0) at kerntrap+0x14a sys/arch/amd64/amd64/trap.c:332 alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b copyout() at copyout+0x57 kern_sysctl(ffff800031f96134,5,20000100,ffff800031f96168,0,37,2040238e8f2714f4) at kern_sysctl+0x320 sys/kern/kern_sysctl.c:500 sys_sysctl(ffff80002a02e068,ffff800031f962a0,ffff800031f961f0) at sys_sysctl+0x422 syscall(ffff800031f962a0) at syscall+0xbb6 mi_syscall sys/sys/syscall_mi.h:179 [inline] syscall(ffff800031f962a0) at syscall+0xbb6 sys/arch/amd64/amd64/trap.c:577 end trace frame: 0xffff800031f96320, 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(ffffffff830727f4) at panic+0x1e5 sys/kern/subr_prf.c:198 witness_checkorder(fffffd806c21c7e8,1,0) at witness_checkorder+0x1113 sys/kern/subr_witness.c:843 rw_enter(fffffd806c21c7d8,2) at rw_enter+0x122 uvmfault_lookup(ffff800031f95c10,0) at uvmfault_lookup+0x122 sys/uvm/uvm_fault.c:1785 uvm_fault_check(ffff800031f95c10,ffff800031f95c48,ffff800031f95c70) at uvm_fault_check+0x47 sys/uvm/uvm_fault.c:672 uvm_fault(fffffd806c21c6f8,20000000,0,2) at uvm_fault+0x112 sys/uvm/uvm_fault.c:600 kpageflttrap(ffff800031f95db0,200002b0) at kpageflttrap+0x2d0 sys/arch/amd64/amd64/trap.c:279 kerntrap(ffff800031f95db0) at kerntrap+0x14a sys/arch/amd64/amd64/trap.c:332 alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b copyout() at copyout+0x57 kern_sysctl(ffff800031f96134,5,20000100,ffff800031f96168,0,37,2040238e8f2714f4) at kern_sysctl+0x320 sys/kern/kern_sysctl.c:500 sys_sysctl(ffff80002a02e068,ffff800031f962a0,ffff800031f961f0) at sys_sysctl+0x422 syscall(ffff800031f962a0) at syscall+0xbb6 mi_syscall sys/sys/syscall_mi.h:179 [inline] syscall(ffff800031f962a0) at syscall+0xbb6 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x397a5ea60f0, count: -15 ddb{0}> show registers rdi 0 rsi 0x1 rbp 0xffff800031f95810 rbx 0xffffffff834c9dbf cpu_info_full_primary+0x2dbf rdx 0 rcx 0xffff80002a02e068 rax 0xffffffff834c8ff0 cpu_info_full_primary+0x1ff0 r8 0x101010101010101 r9 0x8080808080808080 r10 0x7110d7f7876c4ffc r11 0xcbde0679132b8371 r12 0xffffffff834c9bc0 cpu_info_full_primary+0x2bc0 r13 0 r14 0 r15 0x1 rip 0xffffffff824f17f5 db_enter+0x25 cs 0x8 rflags 0x246 rsp 0xffff800031f95800 ss 0x10 db_enter+0x25: addq $0x8,%rsp ddb{0}> show proc PROC (syz-executor) tid=485379 pid=89961 tcnt=3 stat=onproc flags process=10 proc=4000000 runpri=36, usrpri=50, slppri=36, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff80002a02ed10,0xffff8000ffffd460 process=0xffff8000fffef680 user=0xffff800031f91000, vmspace=0xfffffd806c21c6f8 estcpu=36, cpticks=1, pctcpu=0.0, user=0, sys=1, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 3120 487828 98145 32767 2 0x10 syz-executor 89961 367537 4589 32767 2 0x10 syz-executor *89961 485379 4589 32767 7 0x4000010 syz-executor 89961 126643 4589 32767 7 0x4000010 syz-executor 36906 76330 66255 32767 2 0x10 syz-executor 36906 63516 66255 32767 3 0x4000090 fsleep syz-executor 4589 191153 10434 32767 3 0x90 nanoslp syz-executor 10434 363657 58077 0 3 0x82 wait syz-executor 94320 156205 29431 32767 2 0x10 syz-executor 56729 86329 82875 32767 3 0x90 nanoslp syz-executor 56729 318830 82875 32767 3 0x4000090 kqsel syz-executor 56729 390346 82875 32767 3 0x4000090 kqsel syz-executor 56729 128073 82875 32767 3 0x4000090 fsleep syz-executor 56729 444078 82875 32767 3 0x4000090 fsleep syz-executor 29431 254606 58077 0 3 0x82 wait syz-executor 70815 348088 22958 32767 3 0x90 nanoslp syz-executor 70815 69470 22958 32767 3 0x4000090 kqread syz-executor 70815 46961 22958 32767 3 0x4000090 fsleep syz-executor 22958 458168 62217 32767 3 0x90 nanoslp syz-executor 62217 450009 58077 0 3 0x82 wait syz-executor 88673 93131 41947 32767 3 0x90 wait syz-executor 41947 137214 58077 0 3 0x82 wait syz-executor 44821 192323 78291 32767 3 0x90 nanoslp syz-executor 78291 91011 58077 0 3 0x82 wait syz-executor 66255 8523 43038 32767 3 0x90 nanoslp syz-executor 43038 220856 58077 0 3 0x82 wait syz-executor 14052 500092 35441 0 3 0x82 netio sshd-session 82875 229434 18361 32767 3 0x90 nanoslp syz-executor 18361 269766 58077 0 3 0x82 wait syz-executor 98145 82360 93084 32767 3 0x90 nanoslp syz-executor 93084 339553 58077 0 3 0x82 wait syz-executor 19404 159155 78179 0 3 0x100082 sbwait arp 78179 366167 35272 0 3 0x10008a sigsusp sh 35272 88520 1 0 3 0x80 wait syz-executor 23930 374333 0 0 3 0x14200 bored sosplice 58077 437406 81882 0 3 0x82 kqread syz-executor 81882 48788 47060 0 3 0x10008a sigsusp ksh 47060 46125 93859 0 3 0x98 kqread sshd-session 93859 101048 35441 0 3 0x92 kqread sshd-session 21326 476705 1 0 3 0x100083 ttyin getty 35441 39381 1 0 3 0x88 kqread sshd 69427 65045 11816 73 3 0x1100090 kqread syslogd 11816 49652 1 0 3 0x100082 sbwait syslogd 60786 75380 1 0 3 0x100080 kqread resolvd 74692 275938 35219 77 3 0x100092 kqread dhcpleased 84820 142802 35219 77 3 0x100092 kqread dhcpleased 35219 249670 1 0 3 0x80 kqread dhcpleased 69967 423263 0 0 3 0x14200 bored smr 41610 288234 0 0 2 0x14200 zerothread 15846 420072 0 0 3 0x14200 aiodoned aiodoned 77051 464563 0 0 3 0x14200 syncer update 72014 423582 0 0 3 0x14200 cleaner cleaner 20461 143555 0 0 3 0x14200 reaper reaper 20936 441659 0 0 3 0x14200 pgdaemon pagedaemon 18742 235877 0 0 3 0x14200 bored viomb 72578 48378 0 0 3 0x40014200 acpi0 acpi0 71397 518898 0 0 3 0x40014200 idle1 14362 369418 0 0 3 0x14200 bored softnet3 81782 74520 0 0 3 0x14200 bored softnet2 40845 379666 0 0 3 0x14200 bored softnet1 8939 272184 0 0 3 0x14200 bored softnet0 56489 69395 0 0 3 0x14200 bored systqmp 13679 52084 0 0 3 0x14200 bored systq 84830 405510 0 0 3 0x14200 tmoslp softclockmp 62310 342730 0 0 3 0x40014200 tmoslp softclock 64549 154992 0 0 3 0x40014200 idle0 1 150830 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 (0xffffffff835a74e0) #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 89961 (syz-executor) thread 0xffff80002a02e068 (485379) exclusive rwlock netlock r = 0 (0xffffffff83475480) #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 (0xffffffff8354fc60) #0 witness_lock+0x5bb stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5bb sys/kern/subr_witness.c:1155 #1 __mp_acquire_count+0x58 #2 mi_switch+0x4b7 sys/kern/sched_bsd.c:441 #3 sleep_finish+0x21e sys/kern/kern_synch.c:416 #4 rw_enter+0x348 sys/kern/kern_rwlock.c:285 #5 uvmfault_lookup+0x122 sys/uvm/uvm_fault.c:1785 #6 uvm_fault_check+0x47 sys/uvm/uvm_fault.c:672 #7 uvm_fault+0x112 sys/uvm/uvm_fault.c:600 #8 uvm_fault_wire+0x73 sys/uvm/uvm_fault.c:1602 #9 sysctl_vslock+0x109 sys/kern/kern_sysctl.c:186 #10 kern_sysctl+0x1b3 sys/kern/kern_sysctl.c:498 #11 sys_sysctl+0x422 #12 syscall+0xbb6 mi_syscall sys/sys/syscall_mi.h:179 [inline] #12 syscall+0xbb6 sys/arch/amd64/amd64/trap.c:577 #13 Xsyscall+0x128 exclusive rwlock sysctllk r = 0 (0xffffffff834f3670) #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 (0xffffffff835a74e0) #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 89961 (syz-executor) thread 0xffff8000ffffd450 (126643) exclusive rwlock vmmaplk r = 0 (0xfffffd806c21c7e8) #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 ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10239 11054K 11059K 166960K 14016 0 pcb 17 28K 32K 166960K 29 0 rtable 240 6K 7K 166960K 33156 0 pf 31 16K 16K 166960K 1846 0 ifaddr 42 15K 19K 166960K 3644 0 ifgroup 50 2K 2K 166960K 3663 0 sysctl 4 1K 5K 166960K 147 0 counters 64 36K 36K 166960K 1862 0 ioctlops 0 0K 2K 166960K 2452 0 iov 0 0K 32K 166960K 5616 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1469 92K 92K 166960K 24807 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 3 5K 17K 166960K 1163 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 0K 166960K 2664 0 dirhash 21 4K 5K 166960K 1656 0 ACPI 1690 195K 286K 166960K 12468 0 file desc 28 105K 169K 166960K 65344 0 sigio 0 0K 0K 166960K 2296 0 proc 58 79K 176K 166960K 31502 0 subproc 117 7K 13K 166960K 13624 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 16608 0 in_multi 99 7K 8K 166960K 12481 0 ether_multi 1 0K 0K 166960K 393 0 mrt 1 0K 0K 166960K 16 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 403 1791K 1791K 166960K 403 0 exec 0 0K 1K 166960K 23822 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 307 85K 140K 166960K 567688 0 UVM aobj 131 4K 8K 166960K 157 0 pinsyscall 52 104K 134K 166960K 91647 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 1K 166960K 4625 0 NDP 15 0K 2K 166960K 2717 0 temp 84 6825K 6954K 166960K 402988 0 kqueue 16 24K 36K 166960K 10895 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 9818 0 9749 63 60 3 5 0 8 0 rtentry 112 10748 0 10635 17 13 4 4 0 8 0 unpcb 144 64322 0 64307 318 316 2 12 0 8 1 syncache 336 1213 0 1211 63 62 1 1 0 8 0 tcpqe 32 666 0 666 89 88 1 1 0 8 1 tcpcb 808 42917 0 42762 436 420 16 28 0 8 0 arp 120 1864 0 1845 1 0 1 1 0 8 0 ipq 40 287 0 285 8 7 1 1 0 8 0 ipqe 40 4670 0 4668 8 7 1 1 0 8 0 inpcb 336 99165 0 99002 472 454 18 31 0 8 0 ip6q 72 15 0 15 14 14 0 1 0 8 0 ip6af 40 30 0 30 14 14 0 1 0 8 0 nd6 136 3437 0 3411 14 12 2 2 0 8 0 kcovpl 48 1048 0 1039 1 0 1 1 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 42954 0 42488 242 211 31 32 0 8 1 art_table 32 42955 0 42488 15 10 5 5 0 8 0 art_node 16 10747 0 10644 1 0 1 1 0 8 0 sysvmsgpl 40 54 0 14 1 0 1 1 0 8 0 semupl 112 1 0 1 1 1 0 1 0 8 0 semapl 112 2660 0 2650 1 0 1 1 0 8 0 shmpl 112 154 0 26 4 0 4 4 0 8 0 dirhash 1024 1141 0 1105 46 41 5 6 0 8 0 dino2pl 256 85965 0 81017 311 1 310 310 0 8 0 ffsino 272 85965 0 81017 333 3 330 330 0 8 0 nchpl 144 158932 0 155732 120 1 119 119 0 8 0 uvmvnodes 80 11693 0 0 239 0 239 239 0 8 0 vnodes 216 11693 0 0 650 0 650 650 0 8 0 namei 1024 679512 0 679512 72 71 1 2 0 8 1 percpumem 16 945 0 899 1 0 1 1 0 8 0 kstatmem 264 1820 0 1798 2 0 2 2 0 8 0 scxspl 216 634279 0 634279 183 181 2 8 1 8 2 plimitpl 152 21986 0 21959 2 0 2 2 0 8 0 sigapl 424 63937 0 63876 29 21 8 9 0 8 0 futexpl 64 781062 0 781058 36 35 1 1 0 8 0 knotepl 120 2830 0 0 27 2 25 25 0 8 0 kqueuepl 216 23297 0 23283 197 196 1 8 0 8 0 pipepl 320 13116 0 13085 156 149 7 12 0 8 4 fdescpl 496 63918 0 63877 19 13 6 8 0 8 0 filepl 152 472769 0 472367 353 336 17 26 0 8 1 lockfpl 104 19691 0 19689 18 17 1 2 0 8 0 lockfspl 48 5600 0 5598 1 0 1 1 0 8 0 sessionpl 144 1319 0 1301 1 0 1 1 0 8 0 pgrppl 48 3869 0 3843 1 0 1 1 0 8 0 ucredpl 104 92478 0 92459 1 0 1 1 0 8 0 zombiepl 144 63879 0 63876 1 0 1 1 0 8 0 processpl 1160 63937 0 63876 18 12 6 6 0 8 0 procpl 648 153018 0 152948 15 7 8 8 0 8 0 srpgc 96 47 0 47 22 22 0 1 0 8 0 sosppl 168 720 0 716 24 23 1 1 0 8 0 sockpl 664 174636 0 174391 743 722 21 39 0 8 0 mcl64k 65536 81 0 0 6 0 6 6 0 8 0 mcl16k 16384 7 0 0 1 0 1 1 0 8 0 mcl12k 12288 8 0 0 1 0 1 1 0 8 0 mcl9k 9216 4 0 0 1 0 1 1 0 8 0 mcl8k 8192 17 0 0 3 0 3 3 0 8 0 mcl4k 4096 326 0 0 17 6 11 17 0 8 0 mcl2k2 2112 4 0 0 1 0 1 1 0 8 0 mcl2k 2048 907 0 0 14 7 7 8 0 8 0 mtagpl 96 10 0 0 1 0 1 1 0 8 0 mbufpl 256 8840 0 0 426 1 425 425 0 8 0 bufpl 280 107009 0 95314 837 1 836 836 0 8 0 anonpl 24 7694641 0 7683302 684 588 96 119 0 185 0 amapchunkpl 152 1856775 0 1855870 595 553 42 53 0 158 0 amappl16 200 183122 0 182889 943 917 26 38 0 8 4 amappl15 192 37 0 37 17 16 1 1 0 8 1 amappl14 184 2734 0 2721 1 0 1 1 0 8 0 amappl13 176 70 0 70 42 42 0 1 0 8 0 amappl12 168 79345 0 79302 16 13 3 3 0 8 0 amappl11 160 53 0 42 1 0 1 1 0 8 0 amappl10 152 66 0 65 2 1 1 1 0 8 0 amappl9 144 117 0 115 1 0 1 1 0 8 0 amappl8 136 54 0 52 1 0 1 1 0 8 0 amappl7 128 2331 0 2318 1 0 1 1 0 8 0 amappl6 120 9130 0 9126 1 0 1 1 0 8 0 amappl5 112 4147 0 4136 1 0 1 1 0 8 0 amappl4 104 4700 0 4682 1 0 1 1 0 8 0 amappl3 96 382979 0 382835 8 3 5 5 0 8 0 amappl2 88 18090 0 18014 6 3 3 3 0 8 0 amappl1 80 357700 0 357042 45 28 17 22 0 8 0 amappl 88 553837 0 553596 9 2 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 72 156 0 26 3 0 3 3 0 8 0 uaddrrnd 24 63918 0 63877 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 63918 0 63877 1 0 1 1 0 8 0 vmmpekpl 168 545512 0 545441 7 2 5 5 0 8 0 vmmpepl 168 3962044 0 3959529 702 575 127 145 0 357 1 vmsppl 440 63917 0 63877 16 10 6 7 0 8 0 rwobjpl 56 1019926 0 1006832 249 60 189 192 0 8 0 pdppl 4096 127843 0 127754 2298 2203 95 119 0 8 6 pvpl 32 38288 0 0 297 0 297 297 0 265 0 pmappl 248 63917 0 63877 15 12 3 4 0 8 0 extentpl 40 55 0 38 1 0 1 1 0 8 0 phpool 112 4744 0 3482 37 0 37 37 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(ffffffff830727f4) at panic+0x1e5 sys/kern/subr_prf.c:198 witness_checkorder(fffffd806c21c7e8,1,0) at witness_checkorder+0x1113 sys/kern/subr_witness.c:843 rw_enter(fffffd806c21c7d8,2) at rw_enter+0x122 uvmfault_lookup(ffff800031f95c10,0) at uvmfault_lookup+0x122 sys/uvm/uvm_fault.c:1785 uvm_fault_check(ffff800031f95c10,ffff800031f95c48,ffff800031f95c70) at uvm_fault_check+0x47 sys/uvm/uvm_fault.c:672 uvm_fault(fffffd806c21c6f8,20000000,0,2) at uvm_fault+0x112 sys/uvm/uvm_fault.c:600 kpageflttrap(ffff800031f95db0,200002b0) at kpageflttrap+0x2d0 sys/arch/amd64/amd64/trap.c:279 kerntrap(ffff800031f95db0) at kerntrap+0x14a sys/arch/amd64/amd64/trap.c:332 alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b copyout() at copyout+0x57 kern_sysctl(ffff800031f96134,5,20000100,ffff800031f96168,0,37,2040238e8f2714f4) at kern_sysctl+0x320 sys/kern/kern_sysctl.c:500 sys_sysctl(ffff80002a02e068,ffff800031f962a0,ffff800031f961f0) at sys_sysctl+0x422 syscall(ffff800031f962a0) at syscall+0xbb6 mi_syscall sys/sys/syscall_mi.h:179 [inline] syscall(ffff800031f962a0) at syscall+0xbb6 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x397a5ea60f0, 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(ffffffff8354fa58) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:113 [inline] __mp_lock(ffffffff8354fa58) at __mp_lock+0x192 sys/kern/kern_lock.c:144 syscall(ffff800031f84e10) at syscall+0xad6 mi_syscall sys/sys/syscall_mi.h:179 [inline] syscall(ffff800031f84e10) at syscall+0xad6 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x3978de9aa10, 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(ffffffff8354fa58) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:113 [inline] __mp_lock(ffffffff8354fa58) at __mp_lock+0x192 sys/kern/kern_lock.c:144 syscall(ffff800031f84e10) at syscall+0xad6 mi_syscall sys/sys/syscall_mi.h:179 [inline] syscall(ffff800031f84e10) at syscall+0xad6 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x3978de9aa10, count: -6