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 *187444 31398 32767 0x10 0x4000000 0 syz-executor 367138 67005 0 0x14000 0x200 1 softnet0 db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff8306fb2b) at panic+0x1e5 sys/kern/subr_prf.c:198 witness_checkorder(fffffd80684732a8,1,0) at witness_checkorder+0x1197 witness_debugger sys/kern/subr_witness.c:2518 [inline] witness_checkorder(fffffd80684732a8,1,0) at witness_checkorder+0x1197 sys/kern/subr_witness.c:780 rw_enter(fffffd8068473298,2) at rw_enter+0x122 uvmfault_lookup(ffff80002bce3cd0,0) at uvmfault_lookup+0x122 sys/uvm/uvm_fault.c:1785 uvm_fault_check(ffff80002bce3cd0,ffff80002bce3d08,ffff80002bce3d30) at uvm_fault_check+0x47 sys/uvm/uvm_fault.c:672 uvm_fault(fffffd80684731b8,20000000,0,2) at uvm_fault+0x112 sys/uvm/uvm_fault.c:600 kpageflttrap(ffff80002bce3e70,20000114) at kpageflttrap+0x2d0 sys/arch/amd64/amd64/trap.c:279 kerntrap(ffff80002bce3e70) at kerntrap+0x14a sys/arch/amd64/amd64/trap.c:332 alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b copyout() at copyout+0x62 kern_sysctl(ffff80002bce41f4,5,20000100,ffff80002bce4228,0,37,e1e4d19a8884fe8c) at kern_sysctl+0x320 sys/kern/kern_sysctl.c:500 sys_sysctl(ffff8000309936e8,ffff80002bce4360,ffff80002bce42b0) at sys_sysctl+0x422 syscall(ffff80002bce4360) at syscall+0xbb6 mi_syscall sys/sys/syscall_mi.h:179 [inline] syscall(ffff80002bce4360) at syscall+0xbb6 sys/arch/amd64/amd64/trap.c:577 end trace frame: 0xffff80002bce43e0, 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(ffffffff8306fb2b) at panic+0x1e5 sys/kern/subr_prf.c:198 witness_checkorder(fffffd80684732a8,1,0) at witness_checkorder+0x1197 witness_debugger sys/kern/subr_witness.c:2518 [inline] witness_checkorder(fffffd80684732a8,1,0) at witness_checkorder+0x1197 sys/kern/subr_witness.c:780 rw_enter(fffffd8068473298,2) at rw_enter+0x122 uvmfault_lookup(ffff80002bce3cd0,0) at uvmfault_lookup+0x122 sys/uvm/uvm_fault.c:1785 uvm_fault_check(ffff80002bce3cd0,ffff80002bce3d08,ffff80002bce3d30) at uvm_fault_check+0x47 sys/uvm/uvm_fault.c:672 uvm_fault(fffffd80684731b8,20000000,0,2) at uvm_fault+0x112 sys/uvm/uvm_fault.c:600 kpageflttrap(ffff80002bce3e70,20000114) at kpageflttrap+0x2d0 sys/arch/amd64/amd64/trap.c:279 kerntrap(ffff80002bce3e70) at kerntrap+0x14a sys/arch/amd64/amd64/trap.c:332 alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b copyout() at copyout+0x62 kern_sysctl(ffff80002bce41f4,5,20000100,ffff80002bce4228,0,37,e1e4d19a8884fe8c) at kern_sysctl+0x320 sys/kern/kern_sysctl.c:500 sys_sysctl(ffff8000309936e8,ffff80002bce4360,ffff80002bce42b0) at sys_sysctl+0x422 syscall(ffff80002bce4360) at syscall+0xbb6 mi_syscall sys/sys/syscall_mi.h:179 [inline] syscall(ffff80002bce4360) at syscall+0xbb6 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xa784e837a0, count: -15 ddb{0}> show registers rdi 0 rsi 0x1 rbp 0xffff80002bce38d0 rbx 0xffffffff8340cd87 cpu_info_full_primary+0x2d87 rdx 0 rcx 0xffff8000309936e8 rax 0xffffffff8340bff0 cpu_info_full_primary+0x1ff0 r8 0x101010101010101 r9 0x8080808080808080 r10 0xaefd161ddf55691e r11 0x4a7139ad64a3b8a7 r12 0xffffffff8340cb88 cpu_info_full_primary+0x2b88 r13 0 r14 0 r15 0x1 rip 0xffffffff82183dd5 db_enter+0x25 cs 0x8 rflags 0x246 rsp 0xffff80002bce38c0 ss 0x10 db_enter+0x25: addq $0x8,%rsp ddb{0}> show proc PROC (syz-executor) tid=187444 pid=31398 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=0xffff800029fe7208,0xffff800030993c08 process=0xffff800035dcd240 user=0xffff80002bcdf000, vmspace=0xfffffd80684731b8 estcpu=36, cpticks=1, pctcpu=0.0, user=0, sys=1, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 922 151553 79669 32767 2 0x10 syz-executor 57372 53671 70677 32767 2 0x10 syz-executor 57372 13987 70677 32767 3 0x4000090 fsleep syz-executor 31398 498364 29678 32767 2 0x10 syz-executor *31398 187444 29678 32767 7 0x4000010 syz-executor 31398 376687 29678 32767 3 0x4000090 fsleep syz-executor 31398 274388 29678 32767 3 0x4000090 fsleep syz-executor 99274 457503 44804 0 2 0x2 sh 59825 253398 77048 32767 3 0x90 nanoslp syz-executor 59825 486943 77048 32767 3 0x4000090 kqsel syz-executor 59825 427556 77048 32767 3 0x4000090 fsleep syz-executor 44804 362180 21078 0 3 0x80 wait syz-executor 21078 178202 72392 0 3 0x82 wait syz-executor 77048 386321 9199 32767 3 0x90 nanoslp syz-executor 9199 508240 72392 0 3 0x82 wait syz-executor 79669 14129 18626 32767 2 0x10 syz-executor 18626 195243 72392 0 3 0x82 wait syz-executor 53938 340304 32106 32767 3 0x90 wait syz-executor 32106 3754 72392 0 3 0x82 wait syz-executor 70677 267852 36589 32767 3 0x90 nanoslp syz-executor 36589 390473 72392 0 3 0x82 wait syz-executor 62392 56304 50860 32767 3 0x90 wait syz-executor 50860 155851 72392 0 3 0x82 wait syz-executor 29678 481592 34888 32767 3 0x90 nanoslp syz-executor 34888 383889 72392 0 3 0x82 wait syz-executor 80635 115363 2155 32767 2 0x10 syz-executor 2155 181620 72392 0 3 0x82 wait syz-executor 29740 493046 90651 32767 4 0x82010 syz-executor 29740 315210 90651 32767 3 0x4002010 suspend syz-executor 29740 190348 90651 32767 4 0x4082010 syz-executor 90651 255404 1 32767 3 0x90 wait syz-executor 5199 13608 0 0 3 0x14200 bored sosplice 72392 435960 94041 0 2 0x2 syz-executor 94041 141277 84359 0 3 0x10008a sigsusp ksh 84359 340403 44383 0 3 0x98 kqread sshd-session 44383 416053 34855 0 3 0x92 kqread sshd-session 22461 242976 1 0 3 0x100083 ttyin getty 34855 81877 1 0 3 0x88 kqread sshd 62857 509738 16486 73 3 0x1100090 kqread syslogd 16486 394839 1 0 3 0x100082 sbwait syslogd 63124 420682 1 0 3 0x100080 kqread resolvd 45525 78688 2417 77 3 0x100092 kqread dhcpleased 34751 150787 2417 77 3 0x100092 kqread dhcpleased 2417 417545 1 0 3 0x80 kqread dhcpleased 31236 116120 0 0 3 0x14200 bored smr 56155 19240 0 0 2 0x14200 zerothread 63572 115545 0 0 3 0x14200 aiodoned aiodoned 31776 52441 0 0 3 0x14200 syncer update 96702 212026 0 0 3 0x14200 cleaner cleaner 72806 16610 0 0 3 0x14200 reaper reaper 56309 359691 0 0 3 0x14200 pgdaemon pagedaemon 93433 74204 0 0 3 0x14200 bored viomb 39262 203480 0 0 3 0x40014200 acpi0 acpi0 81273 487810 0 0 3 0x40014200 idle1 13616 52395 0 0 3 0x14200 bored softnet3 72987 250399 0 0 3 0x14200 bored softnet2 9578 168933 0 0 3 0x14200 bored softnet1 67005 367138 0 0 7 0x14200 softnet0 31837 64663 0 0 3 0x14200 bored systqmp 89489 276808 0 0 3 0x14200 bored systq 9849 276796 0 0 3 0x14200 tmoslp softclockmp 57806 72962 0 0 3 0x40014200 tmoslp softclock 96494 251765 0 0 3 0x40014200 idle0 1 246225 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 (0xffffffff836067a0) #0 witness_lock+0x5b8 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5b8 sys/kern/subr_witness.c:1151 #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 31398 (syz-executor) thread 0xffff8000309936e8 (187444) exclusive rwlock netlock r = 0 (0xffffffff83466100) #0 witness_lock+0x5b8 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5b8 sys/kern/subr_witness.c:1151 #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 (0xffffffff8360a7d8) #0 witness_lock+0x5b8 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5b8 sys/kern/subr_witness.c:1151 #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 (0xffffffff834d0270) #0 witness_lock+0x5b8 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5b8 sys/kern/subr_witness.c:1151 #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 (0xffffffff836067a0) #0 witness_lock+0x5b8 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5b8 sys/kern/subr_witness.c:1151 #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 31398 (syz-executor) thread 0xffff800030993bf8 (376687) exclusive rwlock vmmaplk r = 0 (0xfffffd80684732a8) #0 witness_lock+0x5b8 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5b8 sys/kern/subr_witness.c:1151 #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 10218 10028K 10035K 166960K 13662 0 pcb 17 24K 26K 166960K 27 0 rtable 228 6K 7K 166960K 27745 0 pf 31 16K 16K 166960K 1621 0 ifaddr 40 15K 19K 166960K 3203 0 ifgroup 50 2K 2K 166960K 3216 0 sysctl 4 1K 3K 166960K 40 0 counters 64 36K 36K 166960K 1640 0 ioctlops 0 0K 2K 166960K 2000 0 iov 0 0K 48K 166960K 5128 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1481 93K 93K 166960K 21215 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 13K 166960K 900 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 0K 166960K 2229 0 dirhash 18 3K 4K 166960K 1008 0 ACPI 1690 195K 286K 166960K 12418 0 file desc 27 101K 181K 166960K 51625 0 sigio 0 0K 0K 166960K 1902 0 proc 56 78K 176K 166960K 27442 0 subproc 117 7K 13K 166960K 12129 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 11807 0 in_multi 89 6K 7K 166960K 10719 0 ether_multi 1 0K 0K 166960K 333 0 mrt 1 0K 0K 166960K 13 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 247 1102K 1102K 166960K 247 0 exec 0 0K 1K 166960K 19626 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 283 84K 149K 166960K 440550 0 UVM aobj 131 4K 7K 166960K 140 0 pinsyscall 48 96K 138K 166960K 74494 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 1K 166960K 3826 0 NDP 11 0K 2K 166960K 2387 0 temp 80 6825K 6952K 166960K 385796 0 kqueue 17 24K 42K 166960K 8317 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 8555 0 8551 51 50 1 3 0 8 0 rtentry 112 9261 0 9154 16 12 4 4 0 8 0 unpcb 144 50535 0 50520 239 237 2 10 0 8 1 syncache 336 435 0 435 66 65 1 1 0 8 1 sackhl 24 1 0 1 1 1 0 1 0 8 0 tcpqe 32 176 0 176 64 63 1 1 0 8 1 tcpcb 808 30951 0 30936 370 365 5 22 0 8 2 arp 120 1629 0 1611 1 0 1 1 0 8 0 ipq 40 295 0 290 9 8 1 1 0 8 0 ipqe 40 4251 0 4246 9 8 1 1 0 8 0 inpcb 336 77795 0 77777 456 451 5 27 0 8 2 ip6q 72 13 0 13 12 12 0 1 0 8 0 ip6af 40 26 0 26 12 12 0 1 0 8 0 nd6 136 2844 0 2819 11 9 2 2 0 8 0 kcovpl 48 933 0 924 1 0 1 1 0 8 0 rttmr 136 1 0 1 1 1 0 1 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 37766 0 37331 257 225 32 33 0 8 0 art_table 32 37767 0 37331 15 10 5 5 0 8 0 art_node 16 9260 0 9162 1 0 1 1 0 8 0 sysvmsgpl 40 19 0 15 1 0 1 1 0 8 0 semapl 112 2227 0 2217 1 0 1 1 0 8 0 shmpl 112 137 0 9 4 0 4 4 0 8 0 dirhash 1024 696 0 667 23 19 4 5 0 8 0 dino2pl 256 65831 0 61432 277 1 276 276 0 8 0 ffsino 272 65831 0 61432 295 1 294 294 0 8 0 nchpl 144 123113 0 119920 120 1 119 119 0 8 0 uvmvnodes 80 11569 0 0 237 0 237 237 0 8 0 vnodes 216 11569 0 0 643 0 643 643 0 8 0 namei 1024 527983 0 527983 64 63 1 2 0 8 1 percpumem 16 834 0 788 1 0 1 1 0 8 0 kstatmem 264 1598 0 1576 4 2 2 2 0 8 0 scxspl 216 502336 0 502336 139 135 4 8 1 8 4 plimitpl 152 17132 0 17107 2 0 2 2 0 8 0 sigapl 424 50334 0 50276 25 17 8 9 0 8 0 futexpl 64 604332 0 604328 34 33 1 1 0 8 0 knotepl 120 2420 0 0 27 0 27 27 0 8 0 kqueuepl 216 17815 0 17801 146 144 2 8 0 8 1 pipepl 320 10020 0 9989 115 112 3 11 0 8 0 fdescpl 496 50315 0 50276 22 16 6 8 0 8 0 filepl 152 366632 0 366365 234 217 17 23 0 8 2 lockfpl 104 13885 0 13883 6 5 1 2 0 8 0 lockfspl 48 4008 0 4006 1 0 1 1 0 8 0 sessionpl 144 1093 0 1076 1 0 1 1 0 8 0 pgrppl 48 3049 0 3024 1 0 1 1 0 8 0 ucredpl 104 68430 0 68411 1 0 1 1 0 8 0 zombiepl 144 50278 0 50276 1 0 1 1 0 8 0 processpl 1160 50334 0 50276 9 4 5 6 0 8 0 procpl 648 117447 0 117381 12 5 7 8 0 8 0 srpgc 96 69 0 69 26 26 0 1 0 8 0 sosppl 168 701 0 701 55 54 1 1 0 8 1 sockpl 664 138282 0 138245 716 708 8 30 0 8 3 mcl64k 65536 41 0 0 4 1 3 3 0 8 0 mcl16k 16384 10 0 0 2 0 2 2 0 8 0 mcl12k 12288 3 0 0 1 0 1 1 0 8 0 mcl9k 9216 3 0 0 1 0 1 1 0 8 0 mcl8k 8192 25 0 0 3 0 3 3 0 8 0 mcl4k 4096 5 0 0 1 0 1 1 0 8 0 mcl2k2 2112 25 0 0 2 0 2 2 0 8 0 mcl2k 2048 1001 0 0 29 4 25 29 0 8 0 mtagpl 96 17 0 0 1 0 1 1 0 8 0 mbufpl 256 8302 0 0 431 0 431 431 0 8 0 bufpl 280 86596 0 75026 827 0 827 827 0 8 0 anonpl 24 6076704 0 6061366 576 455 121 144 0 185 1 amapchunkpl 152 1439473 0 1438602 436 385 51 57 0 158 12 amappl16 200 145522 0 145039 438 398 40 50 0 8 2 amappl15 192 18 0 17 2 1 1 1 0 8 0 amappl14 184 2302 0 2291 1 0 1 1 0 8 0 amappl13 176 55 0 55 39 39 0 1 0 8 0 amappl12 168 63833 0 63796 18 15 3 3 0 8 0 amappl11 160 57 0 47 1 0 1 1 0 8 0 amappl10 152 68 0 67 3 2 1 1 0 8 0 amappl9 144 169 0 168 2 1 1 1 0 8 0 amappl8 136 20 0 18 1 0 1 1 0 8 0 amappl7 128 1963 0 1952 1 0 1 1 0 8 0 amappl6 120 8044 0 8040 1 0 1 1 0 8 0 amappl5 112 3587 0 3577 1 0 1 1 0 8 0 amappl4 104 4133 0 4113 1 0 1 1 0 8 0 amappl3 96 256414 0 256303 9 5 4 4 0 8 0 amappl2 88 54738 0 54653 3 0 3 3 0 8 0 amappl1 80 289322 0 288762 35 20 15 17 0 8 0 amappl 88 429371 0 429143 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 72 139 0 9 3 0 3 3 0 8 0 uaddrrnd 24 50315 0 50276 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 50315 0 50276 1 0 1 1 0 8 0 vmmpekpl 168 462990 0 462941 6 1 5 5 0 8 0 vmmpepl 168 3292105 0 3289506 725 577 148 154 0 357 14 vmsppl 440 50314 0 50276 16 10 6 7 0 8 0 rwobjpl 56 813225 0 800130 247 57 190 190 0 8 0 pdppl 4096 100637 0 100552 2060 1971 89 125 0 8 4 pvpl 32 64200 0 0 518 1 517 517 0 265 0 pmappl 248 50314 0 50276 10 6 4 4 0 8 0 extentpl 40 56 0 38 1 0 1 1 0 8 0 phpool 112 4342 0 3168 35 1 34 34 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(ffffffff8306fb2b) at panic+0x1e5 sys/kern/subr_prf.c:198 witness_checkorder(fffffd80684732a8,1,0) at witness_checkorder+0x1197 witness_debugger sys/kern/subr_witness.c:2518 [inline] witness_checkorder(fffffd80684732a8,1,0) at witness_checkorder+0x1197 sys/kern/subr_witness.c:780 rw_enter(fffffd8068473298,2) at rw_enter+0x122 uvmfault_lookup(ffff80002bce3cd0,0) at uvmfault_lookup+0x122 sys/uvm/uvm_fault.c:1785 uvm_fault_check(ffff80002bce3cd0,ffff80002bce3d08,ffff80002bce3d30) at uvm_fault_check+0x47 sys/uvm/uvm_fault.c:672 uvm_fault(fffffd80684731b8,20000000,0,2) at uvm_fault+0x112 sys/uvm/uvm_fault.c:600 kpageflttrap(ffff80002bce3e70,20000114) at kpageflttrap+0x2d0 sys/arch/amd64/amd64/trap.c:279 kerntrap(ffff80002bce3e70) at kerntrap+0x14a sys/arch/amd64/amd64/trap.c:332 alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b copyout() at copyout+0x62 kern_sysctl(ffff80002bce41f4,5,20000100,ffff80002bce4228,0,37,e1e4d19a8884fe8c) at kern_sysctl+0x320 sys/kern/kern_sysctl.c:500 sys_sysctl(ffff8000309936e8,ffff80002bce4360,ffff80002bce42b0) at sys_sysctl+0x422 syscall(ffff80002bce4360) at syscall+0xbb6 mi_syscall sys/sys/syscall_mi.h:179 [inline] syscall(ffff80002bce4360) at syscall+0xbb6 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xa784e837a0, 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(ffffffff8360a5d0) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:113 [inline] __mp_lock(ffffffff8360a5d0) at __mp_lock+0x192 sys/kern/kern_lock.c:144 if_qstart_compat(ffff800000039300) at if_qstart_compat+0x27 sys/net/if.c:716 ifq_serialize(ffff800000039300,ffff800000039428) at ifq_serialize+0x1ba taskq_thread(ffff80000002c000) at taskq_thread+0x157 sys/kern/kern_task.c:448 end trace frame: 0x0, count: 8 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(ffffffff8360a5d0) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:113 [inline] __mp_lock(ffffffff8360a5d0) at __mp_lock+0x192 sys/kern/kern_lock.c:144 if_qstart_compat(ffff800000039300) at if_qstart_compat+0x27 sys/net/if.c:716 ifq_serialize(ffff800000039300,ffff800000039428) at ifq_serialize+0x1ba taskq_thread(ffff80000002c000) at taskq_thread+0x157 sys/kern/kern_task.c:448 end trace frame: 0x0, count: -7