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 129941 24189 32767 0x10 0 1 syz-executor * 21049 24189 32767 0x10 0x4000000 0 syz-executor db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff830721df) at panic+0x1e5 sys/kern/subr_prf.c:198 witness_checkorder(fffffd806c1229a0,1,0) at witness_checkorder+0x1113 sys/kern/subr_witness.c:843 rw_enter(fffffd806c122990,2) at rw_enter+0x122 uvmfault_lookup(ffff800033fefad0,0) at uvmfault_lookup+0x122 sys/uvm/uvm_fault.c:1785 uvm_fault_check(ffff800033fefad0,ffff800033fefb08,ffff800033fefb30) at uvm_fault_check+0x47 sys/uvm/uvm_fault.c:672 uvm_fault(fffffd806c1228b0,20000000,0,2) at uvm_fault+0x112 sys/uvm/uvm_fault.c:600 kpageflttrap(ffff800033fefc70,20000100) at kpageflttrap+0x2d0 sys/arch/amd64/amd64/trap.c:279 kerntrap(ffff800033fefc70) at kerntrap+0x14a sys/arch/amd64/amd64/trap.c:332 alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b copyout() at copyout+0x62 kern_sysctl(ffff800033fefff4,5,20000100,ffff800033ff0028,0,37,37cc47579ccc2910) at kern_sysctl+0x320 sys/kern/kern_sysctl.c:500 sys_sysctl(ffff8000ffff6cc0,ffff800033ff0160,ffff800033ff00b0) at sys_sysctl+0x422 syscall(ffff800033ff0160) at syscall+0xbb6 mi_syscall sys/sys/syscall_mi.h:179 [inline] syscall(ffff800033ff0160) at syscall+0xbb6 sys/arch/amd64/amd64/trap.c:577 end trace frame: 0xffff800033ff01e0, 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(ffffffff830721df) at panic+0x1e5 sys/kern/subr_prf.c:198 witness_checkorder(fffffd806c1229a0,1,0) at witness_checkorder+0x1113 sys/kern/subr_witness.c:843 rw_enter(fffffd806c122990,2) at rw_enter+0x122 uvmfault_lookup(ffff800033fefad0,0) at uvmfault_lookup+0x122 sys/uvm/uvm_fault.c:1785 uvm_fault_check(ffff800033fefad0,ffff800033fefb08,ffff800033fefb30) at uvm_fault_check+0x47 sys/uvm/uvm_fault.c:672 uvm_fault(fffffd806c1228b0,20000000,0,2) at uvm_fault+0x112 sys/uvm/uvm_fault.c:600 kpageflttrap(ffff800033fefc70,20000100) at kpageflttrap+0x2d0 sys/arch/amd64/amd64/trap.c:279 kerntrap(ffff800033fefc70) at kerntrap+0x14a sys/arch/amd64/amd64/trap.c:332 alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b copyout() at copyout+0x62 kern_sysctl(ffff800033fefff4,5,20000100,ffff800033ff0028,0,37,37cc47579ccc2910) at kern_sysctl+0x320 sys/kern/kern_sysctl.c:500 sys_sysctl(ffff8000ffff6cc0,ffff800033ff0160,ffff800033ff00b0) at sys_sysctl+0x422 syscall(ffff800033ff0160) at syscall+0xbb6 mi_syscall sys/sys/syscall_mi.h:179 [inline] syscall(ffff800033ff0160) at syscall+0xbb6 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xd0a1d75f00, count: -15 ddb{0}> show registers rdi 0 rsi 0x1 rbp 0xffff800033fef6d0 rbx 0xffffffff834aadcf cpu_info_full_primary+0x2dcf rdx 0 rcx 0xffff8000ffff6cc0 rax 0xffffffff834a9ff0 cpu_info_full_primary+0x1ff0 r8 0x101010101010101 r9 0x8080808080808080 r10 0x20174e1674015fcc r11 0x6fbefb8b474288a8 r12 0xffffffff834aabd0 cpu_info_full_primary+0x2bd0 r13 0 r14 0 r15 0x1 rip 0xffffffff8221b045 db_enter+0x25 cs 0x8 rflags 0x246 rsp 0xffff800033fef6c0 ss 0x10 db_enter+0x25: addq $0x8,%rsp ddb{0}> show proc PROC (syz-executor) tid=21049 pid=24189 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=0xffff8000ffff62a0,0xffff8000ffff7468 process=0xffff80002a0ef1e8 user=0xffff800033feb000, vmspace=0xfffffd806c1228b0 estcpu=36, cpticks=1, pctcpu=0.0, user=0, sys=1, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 24189 129941 39943 32767 7 0x10 syz-executor 24189 292466 39943 32767 2 0x4000010 syz-executor *24189 21049 39943 32767 7 0x4000010 syz-executor 24189 513124 39943 32767 3 0x4000090 fsleep syz-executor 19259 447564 94451 32767 2 0x10 syz-executor 19259 243496 94451 32767 3 0x4000090 fifow syz-executor 20154 366148 42831 32767 3 0x90 nanoslp syz-executor 20154 274367 42831 32767 3 0x4000090 pipewr syz-executor 88719 223278 90625 32767 2 0x10 syz-executor 88719 379969 90625 32767 3 0x4000090 fsleep syz-executor 14235 251016 51145 32767 2 0x10 syz-executor 14235 200553 51145 32767 3 0x4000090 fsleep syz-executor 51145 91621 61596 32767 3 0x90 nanoslp syz-executor 61596 291983 63975 0 3 0x82 wait syz-executor 16855 518618 41693 32767 3 0x90 nanoslp syz-executor 41693 197673 63975 0 3 0x82 wait syz-executor 39943 343387 97396 32767 3 0x90 nanoslp syz-executor 97396 88917 63975 0 3 0x82 wait syz-executor 94451 471847 7376 32767 3 0x90 nanoslp syz-executor 7376 452522 63975 0 3 0x82 wait syz-executor 42831 9342 66134 32767 3 0x90 nanoslp syz-executor 46265 165720 78207 32767 3 0x90 wait syz-executor 23534 420569 92049 32767 3 0x90 wait syz-executor 66134 169218 63975 0 3 0x82 wait syz-executor 78207 174922 63975 0 3 0x82 wait syz-executor 92049 244440 63975 0 3 0x82 wait syz-executor 90625 193789 89225 32767 3 0x90 nanoslp syz-executor 89225 146886 63975 0 3 0x82 wait syz-executor 18563 355829 0 0 3 0x14200 bored sosplice 21048 349508 75218 0 3 0x100082 sbwait arp 75218 264940 43828 0 3 0x10008a sigsusp sh 43828 483039 1 0 3 0x80 wait syz-executor 63975 106451 10794 0 2 0x2 syz-executor 10794 462826 45071 0 3 0x10008a sigsusp ksh 45071 477155 91525 0 3 0x98 kqread sshd-session 91525 139688 78515 0 3 0x92 kqread sshd-session 31503 455649 1 0 3 0x100083 ttyin getty 78515 367480 1 0 3 0x88 kqread sshd 55765 80542 51745 73 3 0x1100090 kqread syslogd 51745 244780 1 0 3 0x100082 sbwait syslogd 50886 490173 1 0 3 0x100080 kqread resolvd 24483 462097 46701 77 3 0x100092 kqread dhcpleased 30390 51914 46701 77 3 0x100092 kqread dhcpleased 46701 275174 1 0 3 0x80 kqread dhcpleased 91299 228664 0 0 3 0x14200 bored smr 86973 523159 0 0 3 0x14200 pgzero zerothread 52636 360649 0 0 3 0x14200 aiodoned aiodoned 16327 341860 0 0 3 0x14200 syncer update 22889 196906 0 0 3 0x14200 cleaner cleaner 87579 98954 0 0 3 0x14200 reaper reaper 32708 137236 0 0 3 0x14200 pgdaemon pagedaemon 76860 67463 0 0 3 0x14200 bored viomb 12731 146424 0 0 3 0x40014200 acpi0 acpi0 8401 302322 0 0 3 0x40014200 idle1 83236 263091 0 0 3 0x14200 bored softnet3 34023 186359 0 0 3 0x14200 bored softnet2 75211 126794 0 0 3 0x14200 bored softnet1 51483 400320 0 0 3 0x14200 bored softnet0 57893 203098 0 0 3 0x14200 bored systqmp 96285 384306 0 0 3 0x14200 bored systq 50243 153238 0 0 3 0x14200 tmoslp softclockmp 9830 338442 0 0 3 0x40014200 tmoslp softclock 37477 20766 0 0 3 0x40014200 idle0 1 100220 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 (0xffffffff83581148) #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 24189 (syz-executor) thread 0xffff8000ffff6cc0 (21049) exclusive rwlock netlock r = 0 (0xffffffff83454bd0) #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 (0xffffffff8353cd50) #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 (0xffffffff8341dd60) #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 (0xffffffff83581148) #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 24189 (syz-executor) thread 0xffff8000ffff7458 (513124) exclusive rwlock vmmaplk r = 0 (0xfffffd806c1229a0) #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 10218 11052K 11059K 166960K 12399 0 pcb 17 22K 26K 166960K 25 0 rtable 246 7K 7K 166960K 11835 0 pf 31 16K 16K 166960K 776 0 ifaddr 42 11K 11K 166960K 1514 0 ifgroup 50 2K 2K 166960K 1529 0 sysctl 3 1K 3K 166960K 6 0 counters 64 36K 36K 166960K 798 0 ioctlops 0 0K 2K 166960K 482 0 iov 0 0K 33K 166960K 824 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1483 93K 93K 166960K 8540 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 13K 166960K 117 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 0K 166960K 279 0 dirhash 15 2K 3K 166960K 159 0 ACPI 1690 195K 286K 166960K 12418 0 file desc 29 109K 181K 166960K 11029 0 sigio 0 0K 0K 166960K 149 0 proc 58 79K 176K 166960K 11247 0 subproc 117 7K 13K 166960K 6487 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 1610 0 in_multi 99 7K 7K 166960K 4325 0 ether_multi 1 0K 0K 166960K 35 0 mrt 1 0K 0K 166960K 1 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 6229 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 294 84K 149K 166960K 79037 0 UVM aobj 131 8K 8K 166960K 137 0 pinsyscall 51 102K 140K 166960K 21867 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 392 0 NDP 11 0K 2K 166960K 1120 0 temp 79 6825K 6952K 166960K 82676 0 kqueue 14 20K 34K 166960K 1058 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 1484 0 1478 7 6 1 3 0 8 0 rtentry 112 4209 0 4093 13 9 4 4 0 8 0 unpcb 144 5947 0 5924 67 65 2 6 0 8 1 syncache 336 109 0 109 26 25 1 1 0 8 1 tcpqe 32 44 0 44 21 21 0 1 0 8 0 tcpcb 808 4182 0 4168 116 111 5 15 0 8 2 arp 120 755 0 736 1 0 1 1 0 8 0 ipq 40 35 0 33 1 0 1 1 0 8 0 ipqe 40 386 0 384 1 0 1 1 0 8 0 inpcb 336 10334 0 10314 150 142 8 22 0 8 5 ip6q 72 2 0 2 2 1 1 1 0 8 1 ip6af 40 4 0 4 2 1 1 1 0 8 1 nd6 136 1199 0 1170 2 0 2 2 0 8 0 kcovpl 48 499 0 490 1 0 1 1 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 17150 0 16665 203 172 31 31 0 8 0 art_table 32 17151 0 16665 8 4 4 4 0 8 0 art_node 16 4208 0 4102 1 0 1 1 0 8 0 sysvmsgpl 40 21 0 7 2 1 1 1 0 8 0 semupl 112 1 0 1 1 1 0 1 0 8 0 semapl 112 276 0 266 1 0 1 1 0 8 0 shmpl 112 134 0 6 4 0 4 4 0 8 0 dirhash 1024 122 0 99 7 3 4 4 0 8 1 dino2pl 256 9754 0 7206 161 1 160 160 0 8 0 ffsino 272 9754 0 7206 171 0 171 171 0 8 0 nchpl 144 16635 0 14204 91 0 91 91 0 8 0 uvmvnodes 80 9711 0 0 199 0 199 199 0 8 0 vnodes 216 9711 0 0 540 0 540 540 0 8 0 namei 1024 97408 0 97408 38 37 1 2 0 8 1 percpumem 16 413 0 367 1 0 1 1 0 8 0 kstatmem 264 756 0 734 2 0 2 2 0 8 0 scxspl 216 205922 0 205922 63 62 1 8 1 8 1 plimitpl 152 2254 0 2228 2 0 2 2 0 8 0 sigapl 424 10394 0 10334 20 12 8 9 0 8 0 futexpl 64 72344 0 72341 37 36 1 1 0 8 0 knotepl 120 1082 0 0 18 1 17 18 0 8 0 kqueuepl 216 2138 0 2127 38 35 3 7 0 8 2 pipepl 320 2420 0 2389 26 21 5 9 0 8 0 fdescpl 496 10375 0 10334 24 17 7 8 0 8 0 filepl 152 55588 0 55309 84 70 14 22 0 8 1 lockfpl 104 2051 0 2049 3 2 1 2 0 8 0 lockfspl 48 558 0 556 1 0 1 1 0 8 0 sessionpl 144 460 0 443 1 0 1 1 0 8 0 pgrppl 48 1187 0 1162 1 0 1 1 0 8 0 ucredpl 104 8508 0 8489 1 0 1 1 0 8 0 zombiepl 144 10337 0 10334 1 0 1 1 0 8 0 processpl 1160 10394 0 10334 8 2 6 6 0 8 0 procpl 648 18627 0 18560 12 5 7 8 0 8 0 srpgc 96 16 0 16 8 8 0 1 0 8 0 sosppl 168 76 0 76 27 26 1 1 0 8 1 sockpl 664 17867 0 17818 209 199 10 24 0 8 5 mcl64k 65536 16 0 0 2 0 2 2 0 8 0 mcl16k 16384 3 0 0 1 0 1 1 0 8 0 mcl12k 12288 2 0 0 1 0 1 1 0 8 0 mcl9k 9216 3 0 0 1 0 1 1 0 8 0 mcl8k 8192 17 0 0 3 0 3 3 0 8 0 mcl4k 4096 268 0 0 19 4 15 19 0 8 0 mcl2k 2048 306 0 0 10 5 5 7 0 8 0 mtagpl 96 18 0 0 1 0 1 1 0 8 0 mbufpl 256 2112 0 0 99 0 99 99 0 8 0 bufpl 280 19530 0 9819 694 0 694 694 0 8 0 anonpl 24 1364150 0 1353819 242 177 65 87 0 185 0 amapchunkpl 152 257990 0 257235 139 106 33 55 0 158 3 amappl16 200 21235 0 20921 228 211 17 28 0 8 0 amappl15 192 7 0 7 1 1 0 1 0 8 0 amappl14 184 997 0 986 1 0 1 1 0 8 0 amappl13 176 9 0 9 2 1 1 1 0 8 1 amappl12 168 16980 0 16938 6 3 3 3 0 8 0 amappl11 160 51 0 40 1 0 1 1 0 8 0 amappl10 152 10 0 10 1 1 0 1 0 8 0 amappl9 144 146 0 145 2 1 1 1 0 8 0 amappl8 136 32 0 30 1 0 1 1 0 8 0 amappl7 128 896 0 883 1 0 1 1 0 8 0 amappl6 120 3807 0 3804 1 0 1 1 0 8 0 amappl5 112 1730 0 1721 1 0 1 1 0 8 0 amappl4 104 1663 0 1646 1 0 1 1 0 8 0 amappl3 96 47858 0 47708 8 3 5 5 0 8 0 amappl2 88 6624 0 6558 5 3 2 3 0 8 0 amappl1 80 80276 0 79697 27 12 15 17 0 8 0 amappl 88 75211 0 74977 6 0 6 6 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 72 136 0 6 3 0 3 3 0 8 0 uaddrrnd 24 10375 0 10334 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 10375 0 10334 1 0 1 1 0 8 0 vmmpekpl 168 96024 0 95978 7 2 5 5 0 8 0 vmmpepl 168 657781 0 655294 264 155 109 120 0 357 0 vmsppl 440 10374 0 10334 19 13 6 7 0 8 0 rwobjpl 56 187135 0 176052 182 25 157 157 0 8 0 pdppl 4096 20757 0 20668 1223 1132 91 125 0 8 2 pvpl 32 47340 0 0 380 3 377 378 0 265 0 pmappl 248 10374 0 10334 6 2 4 4 0 8 0 extentpl 40 56 0 38 1 0 1 1 0 8 0 phpool 112 2233 0 1634 18 0 18 18 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(ffffffff830721df) at panic+0x1e5 sys/kern/subr_prf.c:198 witness_checkorder(fffffd806c1229a0,1,0) at witness_checkorder+0x1113 sys/kern/subr_witness.c:843 rw_enter(fffffd806c122990,2) at rw_enter+0x122 uvmfault_lookup(ffff800033fefad0,0) at uvmfault_lookup+0x122 sys/uvm/uvm_fault.c:1785 uvm_fault_check(ffff800033fefad0,ffff800033fefb08,ffff800033fefb30) at uvm_fault_check+0x47 sys/uvm/uvm_fault.c:672 uvm_fault(fffffd806c1228b0,20000000,0,2) at uvm_fault+0x112 sys/uvm/uvm_fault.c:600 kpageflttrap(ffff800033fefc70,20000100) at kpageflttrap+0x2d0 sys/arch/amd64/amd64/trap.c:279 kerntrap(ffff800033fefc70) at kerntrap+0x14a sys/arch/amd64/amd64/trap.c:332 alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b copyout() at copyout+0x62 kern_sysctl(ffff800033fefff4,5,20000100,ffff800033ff0028,0,37,37cc47579ccc2910) at kern_sysctl+0x320 sys/kern/kern_sysctl.c:500 sys_sysctl(ffff8000ffff6cc0,ffff800033ff0160,ffff800033ff00b0) at sys_sysctl+0x422 syscall(ffff800033ff0160) at syscall+0xbb6 mi_syscall sys/sys/syscall_mi.h:179 [inline] syscall(ffff800033ff0160) at syscall+0xbb6 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xd0a1d75f00, 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+0x1a kd_curproc sys/dev/kcov.c:585 [inline] __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x1a sys/dev/kcov.c:158 tsleep(ffffffff8357a2a0,120,ffffffff8304a168,2) at tsleep+0x33 sys_nanosleep(ffff8000ffff67b0,ffff80002a0f59b0,ffff80002a0f5900) at sys_nanosleep+0x28a sys/kern/kern_time.c:303 syscall(ffff80002a0f59b0) at syscall+0xbb6 mi_syscall sys/sys/syscall_mi.h:179 [inline] syscall(ffff80002a0f59b0) at syscall+0xbb6 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7a2f4e12d7e0, count: 7 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+0x1a kd_curproc sys/dev/kcov.c:585 [inline] __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x1a sys/dev/kcov.c:158 tsleep(ffffffff8357a2a0,120,ffffffff8304a168,2) at tsleep+0x33 sys_nanosleep(ffff8000ffff67b0,ffff80002a0f59b0,ffff80002a0f5900) at sys_nanosleep+0x28a sys/kern/kern_time.c:303 syscall(ffff80002a0f59b0) at syscall+0xbb6 mi_syscall sys/sys/syscall_mi.h:179 [inline] syscall(ffff80002a0f59b0) at syscall+0xbb6 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7a2f4e12d7e0, count: -8