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 *365667 837 32767 0x10 0x4000000 0 syz-executor 43820 837 32767 0x10 0x4000000 1 syz-executor db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff83072d93) at panic+0x1e5 sys/kern/subr_prf.c:198 witness_checkorder(fffffd80784ff0f8,1,0) at witness_checkorder+0x1113 sys/kern/subr_witness.c:843 rw_enter(fffffd80784ff0e8,2) at rw_enter+0x122 uvmfault_lookup(ffff80002a4a1fe0,0) at uvmfault_lookup+0x122 sys/uvm/uvm_fault.c:1785 uvm_fault_check(ffff80002a4a1fe0,ffff80002a4a2018,ffff80002a4a2040) at uvm_fault_check+0x47 sys/uvm/uvm_fault.c:672 uvm_fault(fffffd80784ff008,20000000,0,2) at uvm_fault+0x112 sys/uvm/uvm_fault.c:600 kpageflttrap(ffff80002a4a2180,20000224) at kpageflttrap+0x2d0 sys/arch/amd64/amd64/trap.c:279 kerntrap(ffff80002a4a2180) at kerntrap+0x14a sys/arch/amd64/amd64/trap.c:332 alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b copyout() at copyout+0x62 kern_sysctl(ffff80002a4a2504,5,20000100,ffff80002a4a2538,0,37,a3d666b21632592a) at kern_sysctl+0x320 sys/kern/kern_sysctl.c:500 sys_sysctl(ffff800029fe79c0,ffff80002a4a2670,ffff80002a4a25c0) at sys_sysctl+0x422 syscall(ffff80002a4a2670) at syscall+0xbb6 mi_syscall sys/sys/syscall_mi.h:179 [inline] syscall(ffff80002a4a2670) at syscall+0xbb6 sys/arch/amd64/amd64/trap.c:577 end trace frame: 0xffff80002a4a26f0, 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(ffffffff83072d93) at panic+0x1e5 sys/kern/subr_prf.c:198 witness_checkorder(fffffd80784ff0f8,1,0) at witness_checkorder+0x1113 sys/kern/subr_witness.c:843 rw_enter(fffffd80784ff0e8,2) at rw_enter+0x122 uvmfault_lookup(ffff80002a4a1fe0,0) at uvmfault_lookup+0x122 sys/uvm/uvm_fault.c:1785 uvm_fault_check(ffff80002a4a1fe0,ffff80002a4a2018,ffff80002a4a2040) at uvm_fault_check+0x47 sys/uvm/uvm_fault.c:672 uvm_fault(fffffd80784ff008,20000000,0,2) at uvm_fault+0x112 sys/uvm/uvm_fault.c:600 kpageflttrap(ffff80002a4a2180,20000224) at kpageflttrap+0x2d0 sys/arch/amd64/amd64/trap.c:279 kerntrap(ffff80002a4a2180) at kerntrap+0x14a sys/arch/amd64/amd64/trap.c:332 alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b copyout() at copyout+0x62 kern_sysctl(ffff80002a4a2504,5,20000100,ffff80002a4a2538,0,37,a3d666b21632592a) at kern_sysctl+0x320 sys/kern/kern_sysctl.c:500 sys_sysctl(ffff800029fe79c0,ffff80002a4a2670,ffff80002a4a25c0) at sys_sysctl+0x422 syscall(ffff80002a4a2670) at syscall+0xbb6 mi_syscall sys/sys/syscall_mi.h:179 [inline] syscall(ffff80002a4a2670) at syscall+0xbb6 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x964044156b0, count: -15 ddb{0}> show registers rdi 0 rsi 0x1 rbp 0xffff80002a4a1be0 rbx 0xffffffff834bddbf cpu_info_full_primary+0x2dbf rdx 0 rcx 0xffff800029fe79c0 rax 0xffffffff834bcff0 cpu_info_full_primary+0x1ff0 r8 0x101010101010101 r9 0x8080808080808080 r10 0xa50f4292e68a7f62 r11 0xc583348123142d7d r12 0xffffffff834bdbc0 cpu_info_full_primary+0x2bc0 r13 0 r14 0 r15 0x1 rip 0xffffffff81edd4c5 db_enter+0x25 cs 0x8 rflags 0x246 rsp 0xffff80002a4a1bd0 ss 0x10 db_enter+0x25: addq $0x8,%rsp ddb{0}> show proc PROC (syz-executor) tid=365667 pid=837 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=0xffff800029fe7228,0xffff800029fe7748 process=0xffff80002df79b48 user=0xffff80002a49d000, vmspace=0xfffffd80784ff008 estcpu=36, cpticks=2, pctcpu=0.0, user=0, sys=2, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 837 462940 6194 32767 2 0x10 syz-executor * 837 365667 6194 32767 7 0x4000010 syz-executor 837 43820 6194 32767 7 0x4000010 syz-executor 837 475977 6194 32767 3 0x4000090 fsleep syz-executor 10244 504389 59758 32767 3 0x90 nanoslp syz-executor 10244 405577 59758 32767 3 0x4000090 kqread syz-executor 10244 191579 59758 32767 3 0x4000090 fsleep syz-executor 10244 151963 59758 32767 3 0x4000090 fsleep syz-executor 47869 382554 24084 32767 3 0x90 nanoslp syz-executor 47869 61911 24084 32767 3 0x4000090 kqsel syz-executor 47869 492603 24084 32767 3 0x4000090 fsleep syz-executor 68762 492866 25602 32767 2 0x10 syz-executor 25602 179907 87968 0 3 0x82 wait syz-executor 64108 304638 92387 32767 3 0x90 nanoslp syz-executor 92387 109752 87968 0 3 0x82 wait syz-executor 46376 202347 68132 32767 3 0x90 nanoslp syz-executor 68132 458871 87968 0 3 0x82 wait syz-executor 25019 235790 70900 32767 3 0x90 nanoslp syz-executor 70900 194021 87968 0 3 0x82 wait syz-executor 35678 250345 22692 32767 3 0x90 nanoslp syz-executor 22692 35340 87968 0 3 0x82 wait syz-executor 6194 235750 47301 32767 3 0x90 nanoslp syz-executor 47301 191641 87968 0 3 0x82 wait syz-executor 24084 455933 19205 32767 3 0x90 nanoslp syz-executor 19205 309467 87968 0 3 0x82 wait syz-executor 59758 121193 94862 32767 3 0x90 nanoslp syz-executor 94862 492441 87968 0 3 0x82 wait syz-executor 80088 28596 0 0 3 0x14200 bored sosplice 87968 295754 51844 0 3 0x82 kqread syz-executor 51844 206291 67775 0 3 0x10008a sigsusp ksh 67775 341277 92098 0 3 0x98 kqread sshd-session 92098 94833 47835 0 3 0x92 kqread sshd-session 39413 662 1 0 3 0x100083 ttyin getty 47835 502883 1 0 3 0x88 kqread sshd 85017 278642 27377 73 3 0x1100090 kqread syslogd 27377 380601 1 0 3 0x100082 sbwait syslogd 89726 64292 1 0 3 0x100080 kqread resolvd 51110 361934 41692 77 3 0x100092 kqread dhcpleased 15873 394382 41692 77 3 0x100092 kqread dhcpleased 41692 58163 1 0 3 0x80 kqread dhcpleased 88697 343561 0 0 3 0x14200 bored smr 82351 496386 0 0 3 0x14200 pgzero zerothread 43537 402700 0 0 3 0x14200 aiodoned aiodoned 7576 146748 0 0 3 0x14200 syncer update 95913 498048 0 0 3 0x14200 cleaner cleaner 34454 412705 0 0 3 0x14200 reaper reaper 13838 85716 0 0 3 0x14200 pgdaemon pagedaemon 83965 372308 0 0 3 0x14200 bored viomb 96313 506785 0 0 3 0x40014200 acpi0 acpi0 39139 15262 0 0 3 0x40014200 idle1 82398 244509 0 0 3 0x14200 bored softnet3 28739 416646 0 0 3 0x14200 bored softnet2 14372 180634 0 0 3 0x14200 bored softnet1 37390 79406 0 0 3 0x14200 bored softnet0 61477 39738 0 0 3 0x14200 bored systqmp 47073 482065 0 0 3 0x14200 bored systq 95640 223308 0 0 3 0x14200 tmoslp softclockmp 66013 463189 0 0 3 0x40014200 tmoslp softclock 56132 35151 0 0 3 0x40014200 idle0 1 426803 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 (0xffffffff835d6688) #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 837 (syz-executor) thread 0xffff800029fe79c0 (365667) exclusive rwlock netlock r = 0 (0xffffffff8341df10) #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 (0xffffffff835033b0) #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 (0xffffffff834c0db0) #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 (0xffffffff835d6688) #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 837 (syz-executor) thread 0xffff800029fe7738 (43820) exclusive rwlock vmmaplk r = 0 (0xfffffd80784ff0f8) #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 14256 0 pcb 17 24K 28K 166960K 27 0 rtable 248 7K 7K 166960K 35718 0 pf 31 16K 16K 166960K 2004 0 ifaddr 42 15K 19K 166960K 3966 0 ifgroup 50 2K 2K 166960K 3981 0 sysctl 4 1K 5K 166960K 36 0 counters 64 36K 36K 166960K 2022 0 ioctlops 0 0K 2K 166960K 2458 0 iov 0 0K 36K 166960K 6875 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1469 92K 92K 166960K 27746 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 13K 166960K 1379 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 0K 166960K 3007 0 dirhash 27 5K 6K 166960K 1419 0 ACPI 1690 195K 286K 166960K 12468 0 file desc 25 93K 157K 166960K 73262 0 sigio 0 0K 0K 166960K 2789 0 proc 58 79K 176K 166960K 34383 0 subproc 104 6K 13K 166960K 14131 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 2 0K 0K 166960K 17088 0 in_multi 99 7K 7K 166960K 13612 0 ether_multi 1 0K 0K 166960K 499 0 mrt 1 0K 0K 166960K 17 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 26516 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 288 76K 132K 166960K 639253 0 UVM aobj 131 7K 7K 166960K 142 0 pinsyscall 46 92K 132K 166960K 101794 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 1K 166960K 5347 0 NDP 11 0K 2K 166960K 2959 0 temp 77 6825K 6952K 166960K 553409 0 kqueue 13 20K 38K 166960K 12251 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 11084 0 11080 70 69 1 5 0 8 0 rtentry 112 11677 0 11560 21 17 4 4 0 8 0 unpcb 144 76650 0 76634 340 335 5 11 0 8 4 syncache 336 1381 0 1380 65 64 1 1 0 8 0 tcpqe 32 697 0 697 78 77 1 1 0 8 1 tcpcb 808 49487 0 49372 328 307 21 31 0 8 4 arp 120 2026 0 2007 1 0 1 1 0 8 0 ipq 40 435 0 431 14 13 1 1 0 8 0 ipqe 40 9111 0 9106 14 13 1 1 0 8 0 inpcb 336 110318 0 110192 374 349 25 30 0 8 8 ip6q 72 52 0 52 17 17 0 1 0 8 0 ip6af 40 103 0 103 17 17 0 1 0 8 0 nd6 136 3719 0 3689 22 20 2 2 0 8 0 kcovpl 48 1087 0 1079 1 0 1 1 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 46787 0 46306 262 230 32 32 0 8 0 art_table 32 46788 0 46306 22 17 5 5 0 8 0 art_node 16 11675 0 11568 1 0 1 1 0 8 0 sysvmsgpl 40 18 0 14 2 1 1 1 0 8 0 semapl 112 3005 0 2995 1 0 1 1 0 8 0 shmpl 112 139 0 11 4 0 4 4 0 8 0 dirhash 1024 983 0 943 20 14 6 6 0 8 1 dino2pl 256 97424 0 92080 336 1 335 335 0 8 0 ffsino 272 97424 0 92080 360 3 357 357 0 8 0 nchpl 144 181694 0 178480 120 0 120 120 0 8 0 uvmvnodes 80 12168 0 0 249 0 249 249 0 8 0 vnodes 216 12168 0 0 676 0 676 676 0 8 0 namei 1024 762498 0 762498 50 49 1 2 0 8 1 percpumem 16 1025 0 979 1 0 1 1 0 8 0 kstatmem 264 1980 0 1958 5 3 2 2 0 8 0 scxspl 216 672261 0 672261 178 175 3 8 1 8 3 plimitpl 152 24532 0 24508 2 0 2 2 0 8 0 sigapl 424 71806 0 71750 33 26 7 9 0 8 0 futexpl 64 894890 0 894886 37 36 1 1 0 8 0 knotepl 120 3078 0 0 33 0 33 33 0 8 0 kqueuepl 216 26044 0 26033 225 222 3 9 0 8 1 pipepl 320 13833 0 13806 168 163 5 9 0 8 2 fdescpl 496 71787 0 71750 36 30 6 7 0 8 0 filepl 152 537376 0 537115 399 379 20 23 0 8 7 lockfpl 104 20532 0 20530 14 13 1 2 0 8 0 lockfspl 48 6228 0 6226 1 0 1 1 0 8 0 sessionpl 144 1426 0 1410 1 0 1 1 0 8 0 pgrppl 48 4165 0 4140 1 0 1 1 0 8 0 ucredpl 104 112092 0 112073 1 0 1 1 0 8 0 zombiepl 144 71754 0 71750 1 0 1 1 0 8 0 processpl 1160 71806 0 71750 9 4 5 6 0 8 0 procpl 648 172553 0 172489 17 10 7 7 0 8 0 srpgc 96 75 0 75 32 32 0 1 0 8 0 sosppl 168 837 0 827 5 4 1 1 0 8 0 sockpl 664 199697 0 199553 630 599 31 36 0 8 8 mcl64k 65536 97 0 0 7 1 6 6 0 8 0 mcl16k 16384 12 0 0 2 0 2 2 0 8 0 mcl12k 12288 6 0 0 1 0 1 1 0 8 0 mcl9k 9216 3 0 0 1 0 1 1 0 8 0 mcl8k 8192 26 0 0 3 0 3 3 0 8 0 mcl4k 4096 362 0 0 18 7 11 18 0 8 0 mcl2k2 2112 8 0 0 1 0 1 1 0 8 0 mcl2k 2048 862 0 0 21 13 8 11 0 8 0 mtagpl 96 29 0 0 1 0 1 1 0 8 0 mbufpl 256 10709 0 0 560 1 559 559 0 8 0 bufpl 280 116473 0 104302 870 0 870 870 0 8 0 anonpl 24 8451160 0 8434115 982 822 160 160 0 185 30 amapchunkpl 152 2108971 0 2108061 635 587 48 58 0 158 9 amappl16 200 197278 0 196695 806 758 48 60 0 8 7 amappl15 192 28 0 27 13 12 1 1 0 8 0 amappl14 184 2943 0 2932 1 0 1 1 0 8 0 amappl13 176 81 0 81 46 45 1 1 0 8 1 amappl12 168 88427 0 88389 11 8 3 3 0 8 0 amappl11 160 59 0 48 1 0 1 1 0 8 0 amappl10 152 11 0 10 2 1 1 1 0 8 0 amappl9 144 133 0 132 2 1 1 1 0 8 0 amappl8 136 21 0 19 1 0 1 1 0 8 0 amappl7 128 2504 0 2493 1 0 1 1 0 8 0 amappl6 120 9933 0 9930 1 0 1 1 0 8 0 amappl5 112 4471 0 4461 1 0 1 1 0 8 0 amappl4 104 5044 0 5026 1 0 1 1 0 8 0 amappl3 96 432502 0 432359 9 5 4 5 0 8 0 amappl2 88 19757 0 19693 5 2 3 3 0 8 0 amappl1 80 394356 0 393822 61 43 18 23 0 8 0 amappl 88 624125 0 623891 10 3 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 72 141 0 11 3 0 3 3 0 8 0 uaddrrnd 24 71787 0 71750 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 71787 0 71750 1 0 1 1 0 8 0 vmmpekpl 168 606753 0 606685 5 0 5 5 0 8 0 vmmpepl 168 4661771 0 4659151 953 814 139 247 0 357 5 vmsppl 440 71786 0 71750 13 8 5 6 0 8 0 rwobjpl 56 1129390 0 1115626 263 61 202 202 0 8 1 pdppl 4096 143581 0 143500 2387 2304 83 115 0 8 2 pvpl 32 49726 0 0 395 0 395 395 0 265 0 pmappl 248 71786 0 71750 8 5 3 4 0 8 0 extentpl 40 55 0 38 1 0 1 1 0 8 0 phpool 112 4797 0 3345 42 0 42 42 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(ffffffff83072d93) at panic+0x1e5 sys/kern/subr_prf.c:198 witness_checkorder(fffffd80784ff0f8,1,0) at witness_checkorder+0x1113 sys/kern/subr_witness.c:843 rw_enter(fffffd80784ff0e8,2) at rw_enter+0x122 uvmfault_lookup(ffff80002a4a1fe0,0) at uvmfault_lookup+0x122 sys/uvm/uvm_fault.c:1785 uvm_fault_check(ffff80002a4a1fe0,ffff80002a4a2018,ffff80002a4a2040) at uvm_fault_check+0x47 sys/uvm/uvm_fault.c:672 uvm_fault(fffffd80784ff008,20000000,0,2) at uvm_fault+0x112 sys/uvm/uvm_fault.c:600 kpageflttrap(ffff80002a4a2180,20000224) at kpageflttrap+0x2d0 sys/arch/amd64/amd64/trap.c:279 kerntrap(ffff80002a4a2180) at kerntrap+0x14a sys/arch/amd64/amd64/trap.c:332 alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b copyout() at copyout+0x62 kern_sysctl(ffff80002a4a2504,5,20000100,ffff80002a4a2538,0,37,a3d666b21632592a) at kern_sysctl+0x320 sys/kern/kern_sysctl.c:500 sys_sysctl(ffff800029fe79c0,ffff80002a4a2670,ffff80002a4a25c0) at sys_sysctl+0x422 syscall(ffff80002a4a2670) at syscall+0xbb6 mi_syscall sys/sys/syscall_mi.h:179 [inline] syscall(ffff80002a4a2670) at syscall+0xbb6 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x964044156b0, 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 __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x33 kd_curproc sys/dev/kcov.c:590 [inline] __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x33 sys/dev/kcov.c:158 __mp_lock(ffffffff835031a8) at __mp_lock+0x1a3 __mp_lock_spin sys/kern/kern_lock.c:113 [inline] __mp_lock(ffffffff835031a8) at __mp_lock+0x1a3 sys/kern/kern_lock.c:144 syscall(ffff80002bcd0460) at syscall+0xad6 mi_syscall sys/sys/syscall_mi.h:179 [inline] syscall(ffff80002bcd0460) at syscall+0xad6 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x9649578f160, 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 __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x33 kd_curproc sys/dev/kcov.c:590 [inline] __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x33 sys/dev/kcov.c:158 __mp_lock(ffffffff835031a8) at __mp_lock+0x1a3 __mp_lock_spin sys/kern/kern_lock.c:113 [inline] __mp_lock(ffffffff835031a8) at __mp_lock+0x1a3 sys/kern/kern_lock.c:144 syscall(ffff80002bcd0460) at syscall+0xad6 mi_syscall sys/sys/syscall_mi.h:179 [inline] syscall(ffff80002bcd0460) at syscall+0xad6 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x9649578f160, count: -7