panic: kernel diagnostic assertion "va >= entry->start" failed: file "/syzkaller/managers/multicore/kernel/sys/uvm/uvm_fault.c", line 1658 Stopped at db_enter+0x25: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND * 24654 15657 0 0 0x4000000 1 syz-executor 147930 85240 0 0x14000 0x40000200 0 softclock db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff830f2722) at panic+0x1e5 sys/kern/subr_prf.c:198 __assert(ffffffff830a3cce,ffffffff8304995d,67a,ffffffff8300b867) at __assert+0x29 uvm_fault_unwire_locked(fffffd806a05e728,20000000,20011000) at uvm_fault_unwire_locked+0x4b4 uvm_fault_unwire(fffffd806a05e728,20000000,20011000) at uvm_fault_unwire+0x55 sys/uvm/uvm_fault.c:1621 kern_sysctl(ffff800037216314,5,20000100,ffff800037216348,0,37,da92d038269c87d) at kern_sysctl+0x500 sysctl_vsunlock sys/kern/kern_sysctl.c:209 [inline] kern_sysctl(ffff800037216314,5,20000100,ffff800037216348,0,37,da92d038269c87d) at kern_sysctl+0x500 sys/kern/kern_sysctl.c:508 sys_sysctl(ffff8000ffffc520,ffff800037216480,ffff8000372163d0) at sys_sysctl+0x425 syscall(ffff800037216480) at syscall+0xbb6 mi_syscall sys/sys/syscall_mi.h:178 [inline] syscall(ffff800037216480) at syscall+0xbb6 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xc2fdd64e140, count: 6 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{1}> ddb{1}> set $lines = 0 ddb{1}> set $maxwidth = 0 ddb{1}> show panic *cpu1: kernel diagnostic assertion "va >= entry->start" failed: file "/syzkaller/managers/multicore/kernel/sys/uvm/uvm_fault.c", line 1658 ddb{1}> trace db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff830f2722) at panic+0x1e5 sys/kern/subr_prf.c:198 __assert(ffffffff830a3cce,ffffffff8304995d,67a,ffffffff8300b867) at __assert+0x29 uvm_fault_unwire_locked(fffffd806a05e728,20000000,20011000) at uvm_fault_unwire_locked+0x4b4 uvm_fault_unwire(fffffd806a05e728,20000000,20011000) at uvm_fault_unwire+0x55 sys/uvm/uvm_fault.c:1621 kern_sysctl(ffff800037216314,5,20000100,ffff800037216348,0,37,da92d038269c87d) at kern_sysctl+0x500 sysctl_vsunlock sys/kern/kern_sysctl.c:209 [inline] kern_sysctl(ffff800037216314,5,20000100,ffff800037216348,0,37,da92d038269c87d) at kern_sysctl+0x500 sys/kern/kern_sysctl.c:508 sys_sysctl(ffff8000ffffc520,ffff800037216480,ffff8000372163d0) at sys_sysctl+0x425 syscall(ffff800037216480) at syscall+0xbb6 mi_syscall sys/sys/syscall_mi.h:178 [inline] syscall(ffff800037216480) at syscall+0xbb6 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xc2fdd64e140, count: -9 ddb{1}> show registers rdi 0 rsi 0x1 rbp 0xffff800037215fa0 rbx 0xffff800029b7cdbf rdx 0 rcx 0xffff8000ffffc520 rax 0xffff800029b7bff0 r8 0x101010101010101 r9 0x8080808080808080 r10 0xce58d59542a8004f r11 0x15fe293b77fd4cc8 r12 0xffff800029b7cbc0 r13 0 r14 0 r15 0x1 rip 0xffffffff81d0d485 db_enter+0x25 cs 0x8 rflags 0x246 rsp 0xffff800037215f90 ss 0 db_enter+0x25: addq $0x8,%rsp ddb{1}> show proc PROC (syz-executor) tid=24654 pid=15657 tcnt=3 stat=onproc flags process=0 proc=4000000 runpri=36, usrpri=50, slppri=36, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff8000ffffc298,0xffffffff8358e7f8 process=0xffff8000fffec020 user=0xffff800037211000, vmspace=0xfffffd806a05e728 estcpu=36, cpticks=1, pctcpu=0.0, user=0, sys=1, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 15657 42301 60020 0 2 0 syz-executor 15657 44514 60020 0 3 0x4000080 fsleep syz-executor *15657 24654 60020 0 7 0x4000000 syz-executor 50582 277354 42874 0 2 0 syz-executor 50582 309774 42874 0 3 0x4000080 ttyin syz-executor 94945 198966 7449 0 3 0x80 nanoslp syz-executor 94945 377630 7449 0 3 0x4000080 kqsel syz-executor 94945 210766 7449 0 3 0x4000080 fsleep syz-executor 22682 237332 69515 0 2 0x480 syz-executor 22682 390410 69515 0 3 0x4000080 netcon syz-executor 22682 395707 69515 0 3 0x4000080 netcon syz-executor 22682 374330 69515 0 3 0x4000080 fsleep syz-executor 97356 192490 80937 0 2 0x480 syz-executor 97356 61207 80937 0 3 0x4000080 msgwait syz-executor 97356 257219 80937 0 3 0x4000080 fsleep syz-executor 97356 127753 80937 0 3 0x4000080 fsleep syz-executor 63980 332569 1 0 3 0x82 nanoslp getty 3875 255161 0 0 3 0x14200 acct acct 45566 478622 0 0 3 0x14200 bored sosplice 26954 365361 97450 0 2 0x482 syz-executor 69515 435877 97450 0 3 0x82 nanoslp syz-executor 60214 136378 97450 0 3 0x82 nanoslp syz-executor 42874 221093 97450 0 2 0x482 syz-executor 80937 411189 97450 0 2 0x482 syz-executor 7449 334693 97450 0 2 0x482 syz-executor 60020 424455 97450 0 2 0x482 syz-executor 71330 77006 97450 0 3 0x82 nanoslp syz-executor 97450 74276 41848 0 3 0x82 kqread syz-executor 41848 382555 58056 0 3 0x10008a sigsusp ksh 58056 459887 32530 0 3 0x98 kqread sshd-session 32530 510358 42468 0 3 0x92 kqread sshd-session 42468 260688 1 0 3 0x88 kqread sshd 89065 37618 44464 74 3 0x1100092 bpf pflogd 44464 195425 1 0 3 0x80 sbwait pflogd 7430 222704 57523 73 3 0x1100090 kqread syslogd 57523 354167 1 0 3 0x100082 sbwait syslogd 4945 368188 1 0 3 0x100080 kqread resolvd 65552 50669 38740 77 3 0x100092 kqread dhcpleased 87894 154472 38740 77 3 0x100092 kqread dhcpleased 38740 498034 1 0 3 0x80 kqread dhcpleased 13356 384939 0 0 3 0x14200 bored smr 55936 431502 0 0 3 0x14200 pgzero zerothread 23860 481949 0 0 3 0x14200 aiodoned aiodoned 82592 359368 0 0 3 0x14200 syncer update 14114 364866 0 0 3 0x14200 cleaner cleaner 59847 40018 0 0 3 0x14200 reaper reaper 24286 271647 0 0 3 0x14200 pgdaemon pagedaemon 87390 330133 0 0 3 0x14200 bored viomb 63883 395325 0 0 3 0x40014200 acpi0 acpi0 39225 179336 0 0 3 0x40014200 idle1 31846 483464 0 0 3 0x14200 bored softnet3 24771 197941 0 0 3 0x14200 bored softnet2 55817 179509 0 0 3 0x14200 bored softnet1 8783 45829 0 0 3 0x14200 bored softnet0 33337 128839 0 0 3 0x14200 bored systqmp 43973 23240 0 0 3 0x14200 bored systq 45449 421709 0 0 3 0x14200 tmoslp softclockmp 85240 147930 0 0 7 0x40014200 softclock 29727 374648 0 0 3 0x40014200 idle0 1 346015 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{1}> show all locks Process 15657 (syz-executor) thread 0xffff8000ffffc520 (24654) exclusive rwlock amaplk r = 0 (0xfffffd807cc15980) #0 witness_lock+0x5bb stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5bb sys/kern/subr_witness.c:1155 #1 uvm_map_lock_entry+0x4c sys/uvm/uvm_map.c:464 #2 uvm_fault_unwire_locked+0x253 sys/uvm/uvm_fault.c:1677 #3 uvm_fault_unwire+0x55 sys/uvm/uvm_fault.c:1621 #4 kern_sysctl+0x500 sysctl_vsunlock sys/kern/kern_sysctl.c:209 [inline] #4 kern_sysctl+0x500 sys/kern/kern_sysctl.c:508 #5 sys_sysctl+0x425 #6 syscall+0xbb6 mi_syscall sys/sys/syscall_mi.h:178 [inline] #6 syscall+0xbb6 sys/arch/amd64/amd64/trap.c:577 #7 Xsyscall+0x128 shared rwlock vmmaplk r = 0 (0xfffffd806a05e820) #0 witness_lock+0x5bb stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5bb sys/kern/subr_witness.c:1155 #1 uvm_fault_unwire+0x3e sys/uvm/uvm_fault.c:1620 #2 kern_sysctl+0x500 sysctl_vsunlock sys/kern/kern_sysctl.c:209 [inline] #2 kern_sysctl+0x500 sys/kern/kern_sysctl.c:508 #3 sys_sysctl+0x425 #4 syscall+0xbb6 mi_syscall sys/sys/syscall_mi.h:178 [inline] #4 syscall+0xbb6 sys/arch/amd64/amd64/trap.c:577 #5 Xsyscall+0x128 exclusive kernel_lock &kernel_lock r = 0 (0xffffffff835a85b8) #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+0x2e7 sys/kern/kern_synch.c:425 #4 rw_enter+0x348 sys/kern/kern_rwlock.c:285 #5 uvmfault_lookup+0x122 sys/uvm/uvm_fault.c:1783 #6 uvm_fault_check+0x49 sys/uvm/uvm_fault.c:668 #7 uvm_fault+0xf5 sys/uvm/uvm_fault.c:596 #8 uvm_fault_wire+0x73 sys/uvm/uvm_fault.c:1600 #9 sysctl_vslock+0x109 sys/kern/kern_sysctl.c:191 #10 kern_sysctl+0x1ad sys/kern/kern_sysctl.c:504 #11 sys_sysctl+0x425 #12 syscall+0xbb6 mi_syscall sys/sys/syscall_mi.h:178 [inline] #12 syscall+0xbb6 sys/arch/amd64/amd64/trap.c:577 #13 Xsyscall+0x128 exclusive rwlock sysctllk r = 0 (0xffffffff834a3220) #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:181 #3 kern_sysctl+0x1ad sys/kern/kern_sysctl.c:504 #4 sys_sysctl+0x425 #5 syscall+0xbb6 mi_syscall sys/sys/syscall_mi.h:178 [inline] #5 syscall+0xbb6 sys/arch/amd64/amd64/trap.c:577 #6 Xsyscall+0x128 ddb{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10197 11189K 11508K 166960K 11781 0 pcb 17 13K 13K 166960K 101 0 rtable 241 7K 7K 166960K 399 0 pf 34 17K 81K 166960K 71 0 ifaddr 43 7K 8K 166960K 59 0 ifgroup 55 2K 2K 166960K 79 0 sysctl 2 0K 0K 166960K 2 0 counters 64 36K 36K 166960K 80 0 ioctlops 0 0K 4K 166960K 1511 0 iov 1 12K 24K 166960K 27 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1377 87K 87K 166960K 1658 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 4 9K 9K 166960K 15 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 0K 166960K 22 0 dirhash 12 2K 2K 166960K 18 0 ACPI 1690 195K 286K 166960K 12468 0 file desc 18 65K 97K 166960K 544 0 sigio 0 0K 0K 166960K 4 0 proc 72 91K 128K 166960K 578 0 subproc 104 6K 6K 166960K 105 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 123 0 in_multi 99 7K 7K 166960K 125 0 ether_multi 1 0K 0K 166960K 3 0 mrt 1 0K 0K 166960K 3 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 79 360K 360K 166960K 79 0 exec 0 0K 1K 166960K 400 0 fusefs mount 1 32K 32K 166960K 1 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 261 73K 87K 166960K 6855 0 UVM aobj 23 4K 4K 166960K 27 0 pinsyscall 43 86K 105K 166960K 1646 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 13 0 NDP 12 0K 2K 166960K 39 0 temp 48 6821K 7074K 166960K 15222 0 kqueue 14 22K 26K 166960K 105 0 SYN cache 2 16K 16K 166960K 2 0 ddb{1}> 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 66 0 63 1 0 1 1 0 8 0 rtentry 112 123 0 11 4 0 4 4 0 8 0 unpcb 144 247 0 227 2 0 2 2 0 8 1 syncache 336 4 0 4 2 2 0 1 0 8 0 tcpqe 32 1 0 1 1 1 0 1 0 8 0 tcpcb 808 175 0 166 7 2 5 7 0 8 3 arp 120 19 0 0 1 0 1 1 0 8 0 inpcb 336 536 0 523 7 2 5 7 0 8 3 nd6 136 30 0 3 1 0 1 1 0 8 0 pkpcb 40 2 0 2 1 1 0 1 0 8 0 kcovpl 48 8 0 0 1 0 1 1 0 8 0 ppxss 1168 6 0 6 2 1 1 1 0 8 1 pffrag 232 3 0 2 2 1 1 1 0 482 0 pffrnode 88 3 0 2 2 1 1 1 0 8 0 pffrent 40 48 0 47 2 1 1 1 0 8 0 pfosfp 40 1428 0 1005 5 0 5 5 0 8 0 pfosfpen 112 1428 0 714 21 0 21 21 0 8 0 pfanchor 1288 1 0 0 1 0 1 1 0 8 0 pfstitem 24 66 0 4 1 0 1 1 0 8 0 pfstkey 128 66 0 4 2 0 2 2 0 8 0 pfstate 376 66 0 4 7 0 7 7 0 8 0 pfrule 1344 22 0 15 2 0 2 2 0 8 0 art_heap8 4096 2 0 0 2 0 2 2 0 8 0 art_heap4 256 520 0 67 30 0 30 30 0 8 1 art_table 32 522 0 67 4 0 4 4 0 8 0 art_node 16 120 0 19 1 0 1 1 0 8 0 sysvmsgpl 40 8 0 5 1 0 1 1 0 8 0 semapl 112 18 0 8 1 0 1 1 0 8 0 shmpl 112 24 0 4 1 0 1 1 0 8 0 dirhash 1024 21 0 4 3 0 3 3 0 8 0 dino2pl 256 2268 0 762 95 0 95 95 0 8 0 ffsino 272 2268 0 762 101 0 101 101 0 8 0 nchpl 144 3112 0 2575 63 36 27 63 0 8 3 uvmvnodes 80 2541 0 0 52 0 52 52 0 8 0 vnodes 216 2541 0 0 142 0 142 142 0 8 0 namei 1024 9429 0 9429 2 1 1 2 0 8 1 percpumem 16 54 0 8 1 0 1 1 0 8 0 kstatmem 264 40 0 16 2 0 2 2 0 8 0 scsiplug 72 2 0 2 1 1 0 1 0 8 0 scxspl 216 9102 0 9102 10 2 8 8 1 8 8 plimitpl 152 144 0 126 1 0 1 1 0 8 0 sigapl 424 853 0 801 7 1 6 7 0 8 0 futexpl 64 6376 0 6371 1 0 1 1 0 8 0 knotepl 120 532 0 0 17 0 17 17 0 8 0 kqueuepl 216 156 0 145 1 0 1 1 0 8 0 pipepl 320 140 0 112 3 0 3 3 0 8 0 fdescpl 496 833 0 801 6 1 5 6 0 8 0 filepl 152 4023 0 3758 13 1 12 13 0 8 1 lockfpl 104 181 0 179 1 0 1 1 0 8 0 lockfspl 48 77 0 75 1 0 1 1 0 8 0 sessionpl 144 24 0 16 1 0 1 1 0 8 0 pgrppl 48 40 0 24 1 0 1 1 0 8 0 ucredpl 104 548 0 534 1 0 1 1 0 8 0 zombiepl 144 804 0 801 1 0 1 1 0 8 0 processpl 1160 853 0 801 5 1 4 5 0 8 0 procpl 648 1517 0 1454 6 0 6 6 0 8 0 sosppl 168 2 0 2 1 0 1 1 0 8 1 sockpl 664 855 0 819 9 2 7 9 0 8 3 mcl64k 65536 3 0 0 1 0 1 1 0 8 0 mcl16k 16384 2 0 0 1 0 1 1 0 8 0 mcl12k 12288 2 0 0 1 0 1 1 0 8 0 mcl9k 9216 2 0 0 1 0 1 1 0 8 0 mcl8k 8192 2 0 0 1 0 1 1 0 8 0 mcl4k 4096 145 0 0 19 0 19 19 0 8 0 mcl2k 2048 21 0 0 3 0 3 3 0 8 0 mtagpl 96 6 0 0 1 0 1 1 0 8 0 mbufpl 256 314 0 0 20 0 20 20 0 8 0 bufpl 280 4027 0 103 281 0 281 281 0 8 0 anonpl 24 229720 0 225841 50 2 48 48 0 185 20 amapchunkpl 152 23336 0 22753 35 6 29 29 0 158 6 amappl16 200 6440 0 6405 18 3 15 15 0 8 12 amappl15 192 14 0 14 1 1 0 1 0 8 0 amappl14 184 126 0 114 1 0 1 1 0 8 0 amappl13 176 11 0 11 1 1 0 1 0 8 0 amappl12 168 1500 0 1468 3 1 2 2 0 8 0 amappl11 160 120 0 105 1 0 1 1 0 8 0 amappl10 152 15 0 15 1 1 0 1 0 8 0 amappl9 144 151 0 151 1 1 0 1 0 8 0 amappl8 136 26 0 23 1 0 1 1 0 8 0 amappl7 128 142 0 130 1 0 1 1 0 8 0 amappl6 120 175 0 173 1 0 1 1 0 8 0 amappl5 112 144 0 132 1 0 1 1 0 8 0 amappl4 104 324 0 304 1 0 1 1 0 8 0 amappl3 96 4047 0 3937 3 0 3 3 0 8 0 amappl2 88 1115 0 1030 2 0 2 2 0 8 0 amappl1 80 9187 0 8610 14 0 14 14 0 8 0 amappl 88 6416 0 6220 5 0 5 5 0 92 0 dma16384 16384 1 0 1 1 0 1 1 0 8 1 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 26 0 4 1 0 1 1 0 8 0 uaddrrnd 24 833 0 801 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 833 0 801 1 0 1 1 0 8 0 vmmpekpl 168 8015 0 7978 3 0 3 3 0 8 0 vmmpepl 168 61163 0 59200 96 0 96 96 0 357 7 vmsppl 448 832 0 801 6 2 4 5 0 8 0 rwobjpl 56 24350 0 20809 53 0 53 53 0 8 3 pdppl 4096 1673 0 1602 109 38 71 87 0 8 0 pvpl 32 14613 0 0 118 0 118 118 0 265 0 pmappl 248 832 0 801 3 0 3 3 0 8 0 extentpl 40 55 0 38 1 0 1 1 0 8 0 phpool 112 415 0 50 11 0 11 11 0 8 0 ddb{1}> machine ddbcpu 0 Stopped at x86_ipi_db+0x27: addq $0x8,%rsp x86_ipi_db(ffffffff83413ff0) 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+0x2c kd_curproc sys/dev/kcov.c:589 [inline] __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x2c sys/dev/kcov.c:158 __mp_lock(ffffffff835a83b0) at __mp_lock+0x1a3 __mp_lock_spin sys/kern/kern_lock.c:113 [inline] __mp_lock(ffffffff835a83b0) at __mp_lock+0x1a3 sys/kern/kern_lock.c:144 __mp_acquire_count(ffffffff835a83b0,1) at __mp_acquire_count+0x58 mi_switch() at mi_switch+0x4b7 sys/kern/sched_bsd.c:441 sleep_finish(0,1) at sleep_finish+0x2e7 sys/kern/kern_synch.c:425 msleep(ffffffff835800b0,ffffffff8347de60,0,ffffffff830ef09d,0) at msleep+0x13b sys/kern/kern_synch.c:251 softclock_thread(ffff8000fffff6c8) at softclock_thread+0x11f sys/kern/kern_timeout.c:807 end trace frame: 0x0, count: 5 ddb{0}> trace x86_ipi_db(ffffffff83413ff0) 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+0x2c kd_curproc sys/dev/kcov.c:589 [inline] __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x2c sys/dev/kcov.c:158 __mp_lock(ffffffff835a83b0) at __mp_lock+0x1a3 __mp_lock_spin sys/kern/kern_lock.c:113 [inline] __mp_lock(ffffffff835a83b0) at __mp_lock+0x1a3 sys/kern/kern_lock.c:144 __mp_acquire_count(ffffffff835a83b0,1) at __mp_acquire_count+0x58 mi_switch() at mi_switch+0x4b7 sys/kern/sched_bsd.c:441 sleep_finish(0,1) at sleep_finish+0x2e7 sys/kern/kern_synch.c:425 msleep(ffffffff835800b0,ffffffff8347de60,0,ffffffff830ef09d,0) at msleep+0x13b sys/kern/kern_synch.c:251 softclock_thread(ffff8000fffff6c8) at softclock_thread+0x11f sys/kern/kern_timeout.c:807 end trace frame: 0x0, count: -10 ddb{0}> machine ddbcpu 1 Stopped at db_enter+0x25: addq $0x8,%rsp db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff830f2722) at panic+0x1e5 sys/kern/subr_prf.c:198 __assert(ffffffff830a3cce,ffffffff8304995d,67a,ffffffff8300b867) at __assert+0x29 uvm_fault_unwire_locked(fffffd806a05e728,20000000,20011000) at uvm_fault_unwire_locked+0x4b4 uvm_fault_unwire(fffffd806a05e728,20000000,20011000) at uvm_fault_unwire+0x55 sys/uvm/uvm_fault.c:1621 kern_sysctl(ffff800037216314,5,20000100,ffff800037216348,0,37,da92d038269c87d) at kern_sysctl+0x500 sysctl_vsunlock sys/kern/kern_sysctl.c:209 [inline] kern_sysctl(ffff800037216314,5,20000100,ffff800037216348,0,37,da92d038269c87d) at kern_sysctl+0x500 sys/kern/kern_sysctl.c:508 sys_sysctl(ffff8000ffffc520,ffff800037216480,ffff8000372163d0) at sys_sysctl+0x425 syscall(ffff800037216480) at syscall+0xbb6 mi_syscall sys/sys/syscall_mi.h:178 [inline] syscall(ffff800037216480) at syscall+0xbb6 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xc2fdd64e140, count: 6 ddb{1}> trace db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff830f2722) at panic+0x1e5 sys/kern/subr_prf.c:198 __assert(ffffffff830a3cce,ffffffff8304995d,67a,ffffffff8300b867) at __assert+0x29 uvm_fault_unwire_locked(fffffd806a05e728,20000000,20011000) at uvm_fault_unwire_locked+0x4b4 uvm_fault_unwire(fffffd806a05e728,20000000,20011000) at uvm_fault_unwire+0x55 sys/uvm/uvm_fault.c:1621 kern_sysctl(ffff800037216314,5,20000100,ffff800037216348,0,37,da92d038269c87d) at kern_sysctl+0x500 sysctl_vsunlock sys/kern/kern_sysctl.c:209 [inline] kern_sysctl(ffff800037216314,5,20000100,ffff800037216348,0,37,da92d038269c87d) at kern_sysctl+0x500 sys/kern/kern_sysctl.c:508 sys_sysctl(ffff8000ffffc520,ffff800037216480,ffff8000372163d0) at sys_sysctl+0x425 syscall(ffff800037216480) at syscall+0xbb6 mi_syscall sys/sys/syscall_mi.h:178 [inline] syscall(ffff800037216480) at syscall+0xbb6 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xc2fdd64e140, count: -9