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 16991 25528 32767 0x1010 0x2000 0K syz-executor *185121 25528 32767 0x1010 0x4080000 1 syz-executor db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff83076ff4) at panic+0x1e5 sys/kern/subr_prf.c:198 witness_checkorder(fffffd806ca69470,1,0) at witness_checkorder+0x1113 sys/kern/subr_witness.c:843 rw_enter(fffffd806ca69460,2) at rw_enter+0x122 uvmfault_lookup(ffff80003ca0d4d0,0) at uvmfault_lookup+0x122 sys/uvm/uvm_fault.c:1785 uvm_fault_check(ffff80003ca0d4d0,ffff80003ca0d508,ffff80003ca0d530) at uvm_fault_check+0x47 sys/uvm/uvm_fault.c:672 uvm_fault(fffffd806ca69380,20000000,0,2) at uvm_fault+0x112 sys/uvm/uvm_fault.c:600 kpageflttrap(ffff80003ca0d670,200001a0) at kpageflttrap+0x2d0 sys/arch/amd64/amd64/trap.c:279 kerntrap(ffff80003ca0d670) at kerntrap+0x14a sys/arch/amd64/amd64/trap.c:332 alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b copyout() at copyout+0x62 kern_sysctl(ffff80003ca0d9f4,5,20000100,ffff80003ca0da28,0,37,5a2fa6b5b7c68adc) at kern_sysctl+0x320 sys/kern/kern_sysctl.c:500 sys_sysctl(ffff80003519c530,ffff80003ca0db60,ffff80003ca0dab0) at sys_sysctl+0x422 syscall(ffff80003ca0db60) at syscall+0xbb6 mi_syscall sys/sys/syscall_mi.h:179 [inline] syscall(ffff80003ca0db60) at syscall+0xbb6 sys/arch/amd64/amd64/trap.c:577 end trace frame: 0xffff80003ca0dbe0, 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{1}> ddb{1}> set $lines = 0 ddb{1}> set $maxwidth = 0 ddb{1}> show panic *cpu1: acquiring blockable sleep lock with spinlock or critical section held (rwlock) vmmaplk ddb{1}> trace db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff83076ff4) at panic+0x1e5 sys/kern/subr_prf.c:198 witness_checkorder(fffffd806ca69470,1,0) at witness_checkorder+0x1113 sys/kern/subr_witness.c:843 rw_enter(fffffd806ca69460,2) at rw_enter+0x122 uvmfault_lookup(ffff80003ca0d4d0,0) at uvmfault_lookup+0x122 sys/uvm/uvm_fault.c:1785 uvm_fault_check(ffff80003ca0d4d0,ffff80003ca0d508,ffff80003ca0d530) at uvm_fault_check+0x47 sys/uvm/uvm_fault.c:672 uvm_fault(fffffd806ca69380,20000000,0,2) at uvm_fault+0x112 sys/uvm/uvm_fault.c:600 kpageflttrap(ffff80003ca0d670,200001a0) at kpageflttrap+0x2d0 sys/arch/amd64/amd64/trap.c:279 kerntrap(ffff80003ca0d670) at kerntrap+0x14a sys/arch/amd64/amd64/trap.c:332 alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b copyout() at copyout+0x62 kern_sysctl(ffff80003ca0d9f4,5,20000100,ffff80003ca0da28,0,37,5a2fa6b5b7c68adc) at kern_sysctl+0x320 sys/kern/kern_sysctl.c:500 sys_sysctl(ffff80003519c530,ffff80003ca0db60,ffff80003ca0dab0) at sys_sysctl+0x422 syscall(ffff80003ca0db60) at syscall+0xbb6 mi_syscall sys/sys/syscall_mi.h:179 [inline] syscall(ffff80003ca0db60) at syscall+0xbb6 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xb8239195ad0, count: -15 ddb{1}> show registers rdi 0 rsi 0x1 rbp 0xffff80003ca0d0d0 rbx 0xffff800029b7cdbf rdx 0 rcx 0xffff80003519c530 rax 0xffff800029b7bff0 r8 0x101010101010101 r9 0x8080808080808080 r10 0x598c641fb1a3d27 r11 0x35b00c73e68487f9 r12 0xffff800029b7cbc0 r13 0 r14 0 r15 0x1 rip 0xffffffff821f23b5 db_enter+0x25 cs 0x8 rflags 0x246 rsp 0xffff80003ca0d0c0 ss 0x10 db_enter+0x25: addq $0x8,%rsp ddb{1}> show proc PROC (syz-executor) tid=185121 pid=25528 tcnt=5 stat=onproc flags process=1010 proc=4080000 runpri=36, usrpri=50, slppri=36, nice=20 wchan=0x0, wmesg=, ps_single=0xffff800031583490 scnt=4 ecnt=0 forw=0xffffffffffffffff, list=0xffff800031582f80,0xffff80003519c2b8 process=0xffff80002df74db0 user=0xffff80003ca08000, vmspace=0xfffffd806ca69380 estcpu=36, cpticks=1, pctcpu=0.0, user=0, sys=1, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 66566 58255 96309 32767 2 0x10 syz-executor 25528 16991 62204 32767 7 0x3010 syz-executor 25528 309412 62204 32767 2 0x4081090 syz-executor 25528 99489 62204 32767 2 0x4081090 syz-executor *25528 185121 62204 32767 7 0x4081010 syz-executor 25528 15021 62204 32767 2 0x4081010 syz-executor 76686 506201 19790 32767 3 0x90 nanoslp syz-executor 76686 102303 19790 32767 3 0x4000090 netacc syz-executor 76686 85214 19790 32767 3 0x4000090 fsleep syz-executor 76686 206110 19790 32767 3 0x4000090 fsleep syz-executor 58997 211673 18481 32767 2 0x490 syz-executor 58997 341095 18481 32767 3 0x4000090 kqsel syz-executor 58997 75062 18481 32767 3 0x4000090 fsleep syz-executor 89170 99718 36094 32767 2 0x490 syz-executor 89170 232801 36094 32767 3 0x4000090 kqsel syz-executor 91019 374700 4605 32767 2 0x490 syz-executor 91019 461180 4605 32767 2 0x4000010 syz-executor 91019 235261 4605 32767 3 0x4000090 ttyin syz-executor 91019 140112 4605 32767 3 0x4000090 fsleep syz-executor 36094 440805 41050 32767 2 0x490 syz-executor 41050 28241 53408 0 3 0x82 wait syz-executor 18481 455724 46503 32767 3 0x90 nanoslp syz-executor 46503 305354 53408 0 3 0x82 wait syz-executor 19790 142253 90606 32767 2 0x490 syz-executor 90606 464029 53408 0 3 0x82 wait syz-executor 96309 232760 92762 32767 3 0x90 nanoslp syz-executor 92762 323971 53408 0 3 0x82 wait syz-executor 4605 252271 60533 32767 3 0x90 nanoslp syz-executor 60533 102822 53408 0 3 0x82 wait syz-executor 62204 325389 9165 32767 3 0x90 nanoslp syz-executor 9165 56007 53408 0 3 0x82 wait syz-executor 9661 290686 29062 32767 3 0x90 wait syz-executor 29062 522889 53408 0 3 0x82 wait syz-executor 22953 482512 16912 32767 2 0x10 syz-executor 16912 504542 53408 0 3 0x82 wait syz-executor 14895 374192 16548 0 3 0x100082 sbwait arp 16548 221354 74441 0 3 0x10008a sigsusp sh 74441 324224 1 0 3 0x80 wait syz-executor 78505 447486 0 0 3 0x14200 bored sosplice 53408 436070 65471 0 3 0x82 kqread syz-executor 65471 235147 35331 0 3 0x10008a sigsusp ksh 35331 113612 34086 0 3 0x98 kqread sshd-session 34086 74636 37592 0 3 0x92 kqread sshd-session 57044 322123 1 0 3 0x100083 ttyin getty 37592 82915 1 0 3 0x88 kqread sshd 11780 79894 8987 73 3 0x1100090 kqread syslogd 8987 519913 1 0 3 0x100082 sbwait syslogd 12038 143646 1 0 3 0x100080 kqread resolvd 96989 456094 2240 77 3 0x100092 kqread dhcpleased 2025 432366 2240 77 3 0x100092 kqread dhcpleased 2240 511950 1 0 3 0x80 kqread dhcpleased 33479 59430 0 0 3 0x14200 bored smr 95749 325504 0 0 2 0x14200 zerothread 81118 432923 0 0 3 0x14200 aiodoned aiodoned 267 209849 0 0 3 0x14200 syncer update 15179 494535 0 0 3 0x14200 cleaner cleaner 97281 328134 0 0 3 0x14200 reaper reaper 92049 28419 0 0 3 0x14200 pgdaemon pagedaemon 11499 299253 0 0 3 0x14200 bored viomb 77207 500254 0 0 3 0x40014200 acpi0 acpi0 86771 40530 0 0 3 0x40014200 idle1 99813 341915 0 0 3 0x14200 bored softnet3 82059 461943 0 0 3 0x14200 bored softnet2 43051 14197 0 0 3 0x14200 bored softnet1 45806 43280 0 0 3 0x14200 bored softnet0 11846 130411 0 0 3 0x14200 bored systqmp 60192 228171 0 0 3 0x14200 bored systq 72561 149965 0 0 3 0x14200 tmoslp softclockmp 58406 399630 0 0 2 0x40014200 softclock 204 507009 0 0 3 0x40014200 idle0 1 333122 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{1}> show all locks CPU 1: exclusive mutex &table->inpt_mtx r = 0 (0xffffffff834fe2f8) #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 25528 (syz-executor) thread 0xffff800031582560 (309412) kernel: protection fault trap, code=0 Faulted in DDB; continuing... ddb{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10237 11054K 11059K 166960K 13084 0 pcb 17 24K 28K 166960K 27 0 rtable 246 7K 7K 166960K 19826 0 pf 31 16K 16K 166960K 1226 0 ifaddr 42 15K 19K 166960K 2406 0 ifgroup 50 2K 2K 166960K 2423 0 sysctl 4 1K 5K 166960K 86 0 counters 64 36K 36K 166960K 1242 0 ioctlops 0 0K 2K 166960K 1155 0 iov 0 0K 28K 166960K 2156 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1469 92K 92K 166960K 15222 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 13K 166960K 485 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 0K 166960K 782 0 dirhash 24 4K 5K 166960K 642 0 ACPI 1690 195K 286K 166960K 12468 0 file desc 29 106K 169K 166960K 30815 0 sigio 0 0K 0K 166960K 1429 0 proc 58 79K 176K 166960K 19421 0 subproc 117 7K 13K 166960K 9113 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 2 0K 0K 166960K 6398 0 in_multi 99 7K 7K 166960K 7619 0 ether_multi 1 0K 0K 166960K 179 0 mrt 1 0K 0K 166960K 12 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 391 1738K 1738K 166960K 391 0 exec 0 0K 1K 166960K 13247 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 289 84K 140K 166960K 256022 0 UVM aobj 131 5K 8K 166960K 142 0 pinsyscall 50 100K 140K 166960K 47992 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 2001 0 NDP 11 0K 2K 166960K 1788 0 temp 80 6825K 6952K 166960K 205204 0 kqueue 14 22K 36K 166960K 4469 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 5044 0 5039 38 37 1 3 0 8 0 rtentry 112 6871 0 6755 14 10 4 4 0 8 0 unpcb 144 25658 0 25633 138 136 2 8 0 8 1 syncache 336 569 0 568 46 45 1 1 0 8 0 tcpqe 32 300 0 300 39 38 1 1 0 8 1 tcpcb 808 18637 0 18535 252 236 16 34 0 8 2 arp 120 1211 0 1192 1 0 1 1 0 8 0 ipq 40 159 0 156 8 7 1 1 0 8 0 ipqe 40 2557 0 2554 8 7 1 1 0 8 0 inpcb 336 42385 0 42273 305 290 15 28 0 8 3 ip6q 72 12 0 12 11 11 0 1 0 8 0 ip6af 40 24 0 24 11 11 0 1 0 8 0 nd6 136 2068 0 2039 8 6 2 2 0 8 0 kcovpl 48 701 0 692 1 0 1 1 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 27681 0 27194 241 210 31 33 0 8 0 art_table 32 27682 0 27194 9 4 5 5 0 8 0 art_node 16 6870 0 6764 1 0 1 1 0 8 0 sysvmsgpl 40 21 0 19 1 0 1 1 0 8 0 semapl 112 779 0 769 1 0 1 1 0 8 0 shmpl 112 139 0 11 4 0 4 4 0 8 0 dirhash 1024 452 0 419 9 4 5 5 0 8 0 dino2pl 256 37627 0 34215 214 0 214 214 0 8 0 ffsino 272 37627 0 34215 229 1 228 228 0 8 0 nchpl 144 68500 0 65468 113 0 113 113 0 8 0 uvmvnodes 80 10377 0 0 212 0 212 212 0 8 0 vnodes 216 10377 0 0 577 0 577 577 0 8 0 namei 1024 308912 0 308911 58 57 1 2 0 8 0 percpumem 16 635 0 589 1 0 1 1 0 8 0 kstatmem 264 1200 0 1178 2 0 2 2 0 8 0 scxspl 216 329552 0 329552 101 99 2 8 1 8 2 plimitpl 152 9585 0 9559 2 0 2 2 0 8 0 sigapl 424 29886 0 29827 33 25 8 9 0 8 0 futexpl 64 330707 0 330701 45 44 1 1 0 8 0 knotepl 120 2088 0 0 25 0 25 25 0 8 0 kqueuepl 216 9395 0 9383 92 89 3 7 0 8 2 pipepl 320 6158 0 6127 55 51 4 9 0 8 0 fdescpl 496 29867 0 29827 26 20 6 8 0 8 0 filepl 152 206426 0 206142 168 151 17 23 0 8 2 lockfpl 104 8133 0 8131 7 5 2 2 0 8 1 lockfspl 48 2266 0 2264 1 0 1 1 0 8 0 sessionpl 144 787 0 770 1 0 1 1 0 8 0 pgrppl 48 1875 0 1850 1 0 1 1 0 8 0 ucredpl 104 41277 0 41258 1 0 1 1 0 8 0 zombiepl 144 29828 0 29827 1 0 1 1 0 8 0 processpl 1160 29886 0 29827 7 1 6 6 0 8 0 procpl 648 67045 0 66973 11 4 7 8 0 8 0 srpgc 96 39 0 39 17 17 0 1 0 8 0 sosppl 168 332 0 330 29 28 1 1 0 8 0 sockpl 664 73659 0 73519 367 349 18 35 0 8 2 mcl64k 65536 73 0 0 5 1 4 4 0 8 0 mcl16k 16384 8 0 0 1 0 1 1 0 8 0 mcl12k 12288 5 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 321 0 0 19 7 12 19 0 8 0 mcl2k2 2112 36 0 0 3 1 2 3 0 8 0 mcl2k 2048 531 0 0 14 9 5 7 0 8 0 mtagpl 96 16 0 0 1 0 1 1 0 8 0 mbufpl 256 7645 0 0 401 0 401 401 0 8 0 bufpl 280 50341 0 39962 742 0 742 742 0 8 0 anonpl 24 3644428 0 3636070 509 432 77 101 0 185 0 amapchunkpl 152 829734 0 828948 300 265 35 49 0 158 0 amappl16 200 77157 0 76993 561 538 23 35 0 8 7 amappl15 192 13 0 13 4 4 0 1 0 8 0 amappl14 184 1646 0 1634 1 0 1 1 0 8 0 amappl13 176 29 0 29 21 21 0 1 0 8 0 amappl12 168 40097 0 40057 4 1 3 3 0 8 0 amappl11 160 74 0 63 1 0 1 1 0 8 0 amappl10 152 18 0 17 2 1 1 1 0 8 0 amappl9 144 144 0 142 1 0 1 1 0 8 0 amappl8 136 36 0 34 1 0 1 1 0 8 0 amappl7 128 1466 0 1454 1 0 1 1 0 8 0 amappl6 120 6043 0 6040 1 0 1 1 0 8 0 amappl5 112 2661 0 2651 1 0 1 1 0 8 0 amappl4 104 2879 0 2862 1 0 1 1 0 8 0 amappl3 96 168659 0 168515 8 3 5 5 0 8 0 amappl2 88 11003 0 10935 11 8 3 3 0 8 0 amappl1 80 179789 0 179229 37 15 22 25 0 8 0 amappl 88 248478 0 248247 8 1 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 29867 0 29827 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 29867 0 29827 1 0 1 1 0 8 0 vmmpekpl 168 258832 0 258773 9 4 5 5 0 8 0 vmmpepl 168 1865937 0 1863654 421 308 113 143 0 357 0 vmsppl 440 29866 0 29827 24 18 6 7 0 8 0 rwobjpl 56 487461 0 475868 194 26 168 169 0 8 0 pdppl 4096 59741 0 59654 1797 1708 89 121 0 8 2 pvpl 32 49972 0 0 398 0 398 398 0 265 0 pmappl 248 29866 0 29827 6 2 4 4 0 8 0 extentpl 40 55 0 38 1 0 1 1 0 8 0 phpool 112 3598 0 2570 31 0 31 31 0 8 0 ddb{1}> machine ddbcpu 0 Stopped at x86_ipi_db+0x27: addq $0x8,%rsp x86_ipi_db(ffffffff8345fff0) 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 single_thread_set(ffff800031583490,3) at single_thread_set+0x412 single_thread_wait sys/kern/kern_sig.c:2191 [inline] single_thread_set(ffff800031583490,3) at single_thread_set+0x412 sys/kern/kern_sig.c:2173 exit1(ffff800031583490,b,0,1) at exit1+0xa3 sys/kern/kern_exit.c:132 sys_exit(ffff800031583490,ffff80003400bc70,ffff80003400bbc0) at sys_exit+0x1a syscall(ffff80003400bc70) at syscall+0xaf8 mi_syscall sys/sys/syscall_mi.h:179 [inline] syscall(ffff80003400bc70) at syscall+0xaf8 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7d06c0da9180, count: 7 ddb{0}> trace x86_ipi_db(ffffffff8345fff0) 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 single_thread_set(ffff800031583490,3) at single_thread_set+0x412 single_thread_wait sys/kern/kern_sig.c:2191 [inline] single_thread_set(ffff800031583490,3) at single_thread_set+0x412 sys/kern/kern_sig.c:2173 exit1(ffff800031583490,b,0,1) at exit1+0xa3 sys/kern/kern_exit.c:132 sys_exit(ffff800031583490,ffff80003400bc70,ffff80003400bbc0) at sys_exit+0x1a syscall(ffff80003400bc70) at syscall+0xaf8 mi_syscall sys/sys/syscall_mi.h:179 [inline] syscall(ffff80003400bc70) at syscall+0xaf8 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7d06c0da9180, count: -8 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(ffffffff83076ff4) at panic+0x1e5 sys/kern/subr_prf.c:198 witness_checkorder(fffffd806ca69470,1,0) at witness_checkorder+0x1113 sys/kern/subr_witness.c:843 rw_enter(fffffd806ca69460,2) at rw_enter+0x122 uvmfault_lookup(ffff80003ca0d4d0,0) at uvmfault_lookup+0x122 sys/uvm/uvm_fault.c:1785 uvm_fault_check(ffff80003ca0d4d0,ffff80003ca0d508,ffff80003ca0d530) at uvm_fault_check+0x47 sys/uvm/uvm_fault.c:672 uvm_fault(fffffd806ca69380,20000000,0,2) at uvm_fault+0x112 sys/uvm/uvm_fault.c:600 kpageflttrap(ffff80003ca0d670,200001a0) at kpageflttrap+0x2d0 sys/arch/amd64/amd64/trap.c:279 kerntrap(ffff80003ca0d670) at kerntrap+0x14a sys/arch/amd64/amd64/trap.c:332 alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b copyout() at copyout+0x62 kern_sysctl(ffff80003ca0d9f4,5,20000100,ffff80003ca0da28,0,37,5a2fa6b5b7c68adc) at kern_sysctl+0x320 sys/kern/kern_sysctl.c:500 sys_sysctl(ffff80003519c530,ffff80003ca0db60,ffff80003ca0dab0) at sys_sysctl+0x422 syscall(ffff80003ca0db60) at syscall+0xbb6 mi_syscall sys/sys/syscall_mi.h:179 [inline] syscall(ffff80003ca0db60) at syscall+0xbb6 sys/arch/amd64/amd64/trap.c:577 end trace frame: 0xffff80003ca0dbe0, count: 0 ddb{1}> trace db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff83076ff4) at panic+0x1e5 sys/kern/subr_prf.c:198 witness_checkorder(fffffd806ca69470,1,0) at witness_checkorder+0x1113 sys/kern/subr_witness.c:843 rw_enter(fffffd806ca69460,2) at rw_enter+0x122 uvmfault_lookup(ffff80003ca0d4d0,0) at uvmfault_lookup+0x122 sys/uvm/uvm_fault.c:1785 uvm_fault_check(ffff80003ca0d4d0,ffff80003ca0d508,ffff80003ca0d530) at uvm_fault_check+0x47 sys/uvm/uvm_fault.c:672 uvm_fault(fffffd806ca69380,20000000,0,2) at uvm_fault+0x112 sys/uvm/uvm_fault.c:600 kpageflttrap(ffff80003ca0d670,200001a0) at kpageflttrap+0x2d0 sys/arch/amd64/amd64/trap.c:279 kerntrap(ffff80003ca0d670) at kerntrap+0x14a sys/arch/amd64/amd64/trap.c:332 alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b copyout() at copyout+0x62 kern_sysctl(ffff80003ca0d9f4,5,20000100,ffff80003ca0da28,0,37,5a2fa6b5b7c68adc) at kern_sysctl+0x320 sys/kern/kern_sysctl.c:500 sys_sysctl(ffff80003519c530,ffff80003ca0db60,ffff80003ca0dab0) at sys_sysctl+0x422 syscall(ffff80003ca0db60) at syscall+0xbb6 mi_syscall sys/sys/syscall_mi.h:179 [inline] syscall(ffff80003ca0db60) at syscall+0xbb6 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xb8239195ad0, count: -15