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 *482994 30845 32767 0x10 0x4000000 1K syz-executor 447899 30845 32767 0x10 0x4000000 0 syz-executor db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff830762ca) at panic+0x1e5 sys/kern/subr_prf.c:198 witness_checkorder(fffffd806c1bdd10,1,0) at witness_checkorder+0x1113 sys/kern/subr_witness.c:843 rw_enter(fffffd806c1bdd00,2) at rw_enter+0x122 uvmfault_lookup(ffff80002a085b70,0) at uvmfault_lookup+0x122 sys/uvm/uvm_fault.c:1785 uvm_fault_check(ffff80002a085b70,ffff80002a085ba8,ffff80002a085bd0) at uvm_fault_check+0x47 sys/uvm/uvm_fault.c:672 uvm_fault(fffffd806c1bdc20,20000000,0,2) at uvm_fault+0x112 sys/uvm/uvm_fault.c:600 kpageflttrap(ffff80002a085d10,20000158) at kpageflttrap+0x2d0 sys/arch/amd64/amd64/trap.c:279 kerntrap(ffff80002a085d10) at kerntrap+0x14a sys/arch/amd64/amd64/trap.c:332 alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b copyout() at copyout+0x62 kern_sysctl(ffff80002a086094,5,20000100,ffff80002a0860c8,0,37,ebd8eaedd7439a91) at kern_sysctl+0x320 sys/kern/kern_sysctl.c:500 sys_sysctl(ffff800031b7f6f8,ffff80002a086200,ffff80002a086150) at sys_sysctl+0x422 syscall(ffff80002a086200) at syscall+0xbb6 mi_syscall sys/sys/syscall_mi.h:179 [inline] syscall(ffff80002a086200) at syscall+0xbb6 sys/arch/amd64/amd64/trap.c:577 end trace frame: 0xffff80002a086280, 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(ffffffff830762ca) at panic+0x1e5 sys/kern/subr_prf.c:198 witness_checkorder(fffffd806c1bdd10,1,0) at witness_checkorder+0x1113 sys/kern/subr_witness.c:843 rw_enter(fffffd806c1bdd00,2) at rw_enter+0x122 uvmfault_lookup(ffff80002a085b70,0) at uvmfault_lookup+0x122 sys/uvm/uvm_fault.c:1785 uvm_fault_check(ffff80002a085b70,ffff80002a085ba8,ffff80002a085bd0) at uvm_fault_check+0x47 sys/uvm/uvm_fault.c:672 uvm_fault(fffffd806c1bdc20,20000000,0,2) at uvm_fault+0x112 sys/uvm/uvm_fault.c:600 kpageflttrap(ffff80002a085d10,20000158) at kpageflttrap+0x2d0 sys/arch/amd64/amd64/trap.c:279 kerntrap(ffff80002a085d10) at kerntrap+0x14a sys/arch/amd64/amd64/trap.c:332 alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b copyout() at copyout+0x62 kern_sysctl(ffff80002a086094,5,20000100,ffff80002a0860c8,0,37,ebd8eaedd7439a91) at kern_sysctl+0x320 sys/kern/kern_sysctl.c:500 sys_sysctl(ffff800031b7f6f8,ffff80002a086200,ffff80002a086150) at sys_sysctl+0x422 syscall(ffff80002a086200) at syscall+0xbb6 mi_syscall sys/sys/syscall_mi.h:179 [inline] syscall(ffff80002a086200) at syscall+0xbb6 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x82ae09f41f0, count: -15 ddb{1}> show registers rdi 0 rsi 0x1 rbp 0xffff80002a085770 rbx 0xffff800029b7cdbf rdx 0 rcx 0xffff800031b7f6f8 rax 0xffff800029b7bff0 r8 0x101010101010101 r9 0x8080808080808080 r10 0x6ba41ab68267b119 r11 0x2a9ffc0311608454 r12 0xffff800029b7cbc0 r13 0 r14 0 r15 0x1 rip 0xffffffff82e226c5 db_enter+0x25 cs 0x8 rflags 0x246 rsp 0xffff80002a085760 ss 0x10 db_enter+0x25: addq $0x8,%rsp ddb{1}> show proc PROC (syz-executor) tid=482994 pid=30845 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=0xffff8000ffff71d0,0xffff800031b7e550 process=0xffff8000fffecdb8 user=0xffff80002a081000, vmspace=0xfffffd806c1bdc20 estcpu=36, cpticks=1, pctcpu=0.0, user=0, sys=1, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 30845 37371 470 32767 2 0x10 syz-executor 30845 171486 470 32767 3 0x4000010 biowait syz-executor *30845 482994 470 32767 7 0x4000010 syz-executor 30845 447899 470 32767 7 0x4000010 syz-executor 31472 395377 4443 0 2 0 syz-executor 7271 450626 50042 0 3 0x2 clonelk ifconfig 50042 427743 73243 0 3 0x10008a sigsusp sh 73243 241851 232 0 3 0x80 wait syz-executor 232 406815 4443 0 3 0x82 wait syz-executor 88938 225890 3 32767 3 0x90 nanoslp syz-executor 88938 262741 3 32767 3 0x4000090 kqread syz-executor 88938 320148 3 32767 3 0x4000090 fsleep syz-executor 92155 347195 4443 0 3 0x82 wait syz-executor 3 261520 77829 32767 3 0x90 nanoslp syz-executor 77829 14005 4443 0 3 0x82 wait syz-executor 81473 394287 77307 32767 3 0x90 wait syz-executor 77307 205730 4443 0 3 0x82 wait syz-executor 10817 67642 51216 32767 3 0x90 wait syz-executor 51216 52146 4443 0 3 0x82 wait syz-executor 80751 475677 4443 0 3 0x82 wait syz-executor 470 182419 41253 32767 3 0x90 nanoslp syz-executor 41253 101077 4443 0 3 0x82 wait syz-executor 75641 288462 84179 0 3 0x82 netio sshd-session 11256 107054 84179 0 3 0x82 netio sshd-session 68862 301118 14717 0 3 0x100082 sbwait arp 14717 375904 54471 0 3 0x10008a sigsusp sh 54471 49216 1 0 3 0x80 wait syz-executor 1605 502376 0 0 3 0x14200 bored sosplice 4443 374743 96863 0 3 0x82 kqread syz-executor 96863 69538 2651 0 3 0x10008a sigsusp ksh 2651 104943 99377 0 3 0x98 kqread sshd-session 99377 489299 84179 0 3 0x92 kqread sshd-session 84987 422288 1 0 3 0x100083 ttyin getty 84179 333963 1 0 3 0x88 kqread sshd 43049 76120 6545 73 3 0x1100090 kqread syslogd 6545 450399 1 0 3 0x100082 sbwait syslogd 20246 383516 1 0 3 0x100080 kqread resolvd 74355 68808 69321 77 3 0x100092 kqread dhcpleased 83853 189176 69321 77 3 0x100092 kqread dhcpleased 69321 437021 1 0 3 0x80 kqread dhcpleased 86436 232419 0 0 3 0x14200 bored smr 39090 131859 0 0 2 0x14200 zerothread 72639 248822 0 0 3 0x14200 aiodoned aiodoned 50058 141982 0 0 3 0x14200 syncer update 54548 323763 0 0 3 0x14200 cleaner cleaner 7168 25811 0 0 3 0x14200 reaper reaper 76553 96071 0 0 3 0x14200 pgdaemon pagedaemon 3777 227128 0 0 3 0x14200 bored viomb 37740 4299 0 0 3 0x40014200 acpi0 acpi0 4745 11111 0 0 3 0x40014200 idle1 74693 336153 0 0 3 0x14200 bored softnet3 51732 342730 0 0 3 0x14200 bored softnet2 21928 346745 0 0 3 0x14200 bored softnet1 57498 76916 0 0 3 0x14200 bored softnet0 1344 276281 0 0 3 0x14200 bored systqmp 76078 383825 0 0 3 0x14200 bored systq 96659 150323 0 0 3 0x14200 tmoslp softclockmp 52701 211382 0 0 3 0x40014200 tmoslp softclock 25557 321571 0 0 3 0x40014200 idle0 1 411141 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 (0xffffffff834f8f38) #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 30845 (syz-executor) thread 0xffff8000ffff71d0 (171486) exclusive rrwlock inode r = 0 (0xfffffd80653615f8) #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 rrw_enter+0xbe sys/kern/kern_rwlock.c:464 #3 VOP_LOCK+0xa6 sys/kern/vfs_vops.c:524 #4 vn_lock+0xa4 sys/kern/vfs_vnops.c:564 #5 sys_ftruncate+0x1c4 sys/kern/vfs_syscalls.c:2902 #6 syscall+0xaf8 mi_syscall sys/sys/syscall_mi.h:179 [inline] #6 syscall+0xaf8 sys/arch/amd64/amd64/trap.c:577 #7 Xsyscall+0x128 Process 30845 (syz-executor) thread 0xffff800031b7f6f8 (482994) exclusive rwlock netlock r = 0 (0xffffffff83452d60) #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 (0xffffffff83518f18) #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 (0xffffffff8346c990) #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 (0xffffffff834f8f38) #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 30845 (syz-executor) thread 0xffff800031b7e540 (447899) exclusive rwlock vmmaplk r = 0 (0xfffffd806c1bdd10) #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{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10214 11047K 11059K 166960K 12557 0 pcb 17 20K 22K 166960K 25 0 rtable 194 5K 7K 166960K 13907 0 pf 27 16K 16K 166960K 876 0 ifaddr 34 9K 11K 166960K 1713 0 ifgroup 42 1K 2K 166960K 1733 0 sysctl 4 1K 5K 166960K 48 0 counters 60 35K 36K 166960K 902 0 ioctlops 0 0K 2K 166960K 1012 0 iov 0 0K 28K 166960K 1505 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1469 92K 92K 166960K 10318 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 13K 166960K 286 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 0K 166960K 571 0 dirhash 18 3K 4K 166960K 417 0 ACPI 1690 195K 286K 166960K 12418 0 file desc 26 94K 169K 166960K 20102 0 sigio 0 0K 0K 166960K 578 0 proc 65 91K 176K 166960K 13552 0 subproc 104 6K 13K 166960K 6552 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 3 0K 0K 166960K 4680 0 in_multi 77 5K 7K 166960K 5259 0 ether_multi 1 0K 0K 166960K 92 0 mrt 2 0K 0K 166960K 6 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 259 1155K 1155K 166960K 259 0 exec 0 0K 1K 166960K 8983 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 281 76K 141K 166960K 165128 0 UVM aobj 131 6K 7K 166960K 141 0 pinsyscall 52 104K 146K 166960K 32786 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 1355 0 NDP 9 0K 2K 166960K 1269 0 temp 76 6825K 6904K 166960K 125402 0 kqueue 15 24K 38K 166960K 2862 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 2592 0 2588 12 11 1 3 0 8 0 rtentry 112 4824 0 4734 13 9 4 4 0 8 0 unpcb 144 18635 0 18620 88 85 3 10 0 8 2 syncache 336 317 0 317 26 25 1 1 0 8 1 tcpqe 32 133 0 133 29 28 1 1 0 8 1 tcpcb 808 11376 0 11327 130 120 10 19 0 8 2 arp 120 830 0 814 1 0 1 1 0 8 0 ipq 40 146 0 140 4 3 1 1 0 8 0 ipqe 40 3005 0 2999 4 3 1 1 0 8 0 inpcb 336 27022 0 26965 185 174 11 25 0 8 2 ip6q 72 1 0 1 1 1 0 1 0 8 0 ip6af 40 2 0 2 1 1 0 1 0 8 0 nd6 136 1445 0 1427 6 4 2 2 0 8 1 kcovpl 48 504 0 496 1 0 1 1 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 19573 0 19197 187 157 30 32 0 8 0 art_table 32 19574 0 19197 14 9 5 5 0 8 0 art_node 16 4823 0 4741 1 0 1 1 0 8 0 sysvmsgpl 40 17 0 8 1 0 1 1 0 8 0 semapl 112 567 0 557 1 0 1 1 0 8 0 shmpl 112 138 0 10 4 0 4 4 0 8 0 dirhash 1024 294 0 269 10 6 4 4 0 8 0 dino2pl 256 23856 0 20968 182 1 181 181 0 8 0 ffsino 272 23856 0 20968 195 2 193 193 0 8 0 nchpl 144 43364 0 40634 102 0 102 102 0 8 0 uvmvnodes 80 9766 0 0 200 0 200 200 0 8 0 vnodes 216 9766 0 0 543 0 543 543 0 8 0 namei 1024 204134 0 204134 38 37 1 2 0 8 1 percpumem 16 465 0 421 1 0 1 1 0 8 0 kstatmem 264 860 0 842 3 1 2 2 0 8 0 scxspl 216 231819 0 231818 61 57 4 8 1 8 3 plimitpl 152 6145 0 6121 2 0 2 2 0 8 0 sigapl 424 19574 0 19515 20 12 8 9 0 8 0 futexpl 64 205554 0 205553 28 27 1 1 0 8 0 knotepl 120 1546 0 0 25 0 25 25 0 8 0 kqueuepl 216 5865 0 5853 44 39 5 5 0 8 4 pipepl 320 4498 0 4466 46 40 6 9 0 8 2 fdescpl 496 19555 0 19515 21 14 7 8 0 8 0 filepl 152 133720 0 133460 112 95 17 21 0 8 0 lockfpl 104 5286 0 5284 4 3 1 2 0 8 0 lockfspl 48 1471 0 1469 1 0 1 1 0 8 0 sessionpl 144 616 0 598 2 0 2 2 0 8 0 pgrppl 48 1316 0 1290 1 0 1 1 0 8 0 ucredpl 104 23949 0 23932 1 0 1 1 0 8 0 zombiepl 144 19519 0 19515 1 0 1 1 0 8 0 processpl 1160 19574 0 19515 6 0 6 6 0 8 0 procpl 648 42563 0 42499 8 1 7 7 0 8 0 srpgc 96 21 0 21 10 10 0 1 0 8 0 sosppl 168 197 0 194 23 22 1 1 0 8 0 sockpl 664 48513 0 48436 267 254 13 27 0 8 1 mcl64k 65536 58 0 0 4 0 4 4 0 8 0 mcl16k 16384 35 0 0 5 2 3 5 0 8 0 mcl12k 12288 3 0 0 1 0 1 1 0 8 0 mcl9k 9216 2 0 0 1 0 1 1 0 8 0 mcl8k 8192 17 0 0 3 1 2 3 0 8 0 mcl4k 4096 248 0 0 20 6 14 20 0 8 0 mcl2k2 2112 23 0 0 2 0 2 2 0 8 0 mcl2k 2048 313 0 0 10 4 6 7 0 8 0 mtagpl 96 6 0 0 1 0 1 1 0 8 0 mbufpl 256 2235 0 0 88 0 88 88 0 8 0 bufpl 280 35651 0 25886 698 0 698 698 0 8 0 anonpl 24 2447551 0 2441181 300 214 86 90 0 185 22 amapchunkpl 152 543265 0 542572 255 221 34 51 0 158 1 amappl16 200 50733 0 50666 411 396 15 30 0 8 8 amappl15 192 12 0 11 1 0 1 1 0 8 0 amappl14 184 1304 0 1291 1 0 1 1 0 8 0 amappl13 176 24 0 24 11 11 0 1 0 8 0 amappl12 168 27035 0 26994 5 2 3 3 0 8 0 amappl11 160 45 0 35 1 0 1 1 0 8 0 amappl10 152 8 0 8 1 1 0 1 0 8 0 amappl9 144 131 0 131 1 1 0 1 0 8 0 amappl8 136 24 0 22 2 1 1 1 0 8 0 amappl7 128 1104 0 1090 1 0 1 1 0 8 0 amappl6 120 4300 0 4294 1 0 1 1 0 8 0 amappl5 112 1966 0 1953 1 0 1 1 0 8 0 amappl4 104 2266 0 2249 1 0 1 1 0 8 0 amappl3 96 107740 0 107609 8 3 5 6 0 8 0 amappl2 88 8601 0 8518 4 1 3 3 0 8 0 amappl1 80 137795 0 137065 33 14 19 21 0 8 0 amappl 88 159520 0 159308 9 3 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 72 140 0 10 3 0 3 3 0 8 0 uaddrrnd 24 19555 0 19515 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 19555 0 19515 1 0 1 1 0 8 0 vmmpekpl 168 183381 0 183321 7 3 4 5 0 8 0 vmmpepl 168 1224981 0 1222593 343 215 128 132 0 357 12 vmsppl 440 19554 0 19515 25 19 6 7 0 8 0 rwobjpl 56 339676 0 328606 184 23 161 163 0 8 0 pdppl 4096 39117 0 39030 1148 1055 93 125 0 8 6 pvpl 32 48477 0 0 385 1 384 384 0 265 0 pmappl 248 19554 0 19515 7 4 3 4 0 8 0 extentpl 40 56 0 38 1 0 1 1 0 8 0 phpool 112 2235 0 1592 19 0 19 19 0 8 0 ddb{1}> machine ddbcpu 0 Stopped at x86_ipi_db+0x27: addq $0x8,%rsp x86_ipi_db(ffffffff83443ff0) 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+0xf sys/dev/kcov.c:154 intr_handler(ffff80002a1000a0,ffff800000079f80) at intr_handler+0xe1 sys/arch/amd64/amd64/intr.c:553 Xintr_ioapic_edge23_untramp() at Xintr_ioapic_edge23_untramp+0x18f end of kernel end trace frame: 0x82a57e05350, count: 9 ddb{0}> trace x86_ipi_db(ffffffff83443ff0) 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+0xf sys/dev/kcov.c:154 intr_handler(ffff80002a1000a0,ffff800000079f80) at intr_handler+0xe1 sys/arch/amd64/amd64/intr.c:553 Xintr_ioapic_edge23_untramp() at Xintr_ioapic_edge23_untramp+0x18f end of kernel end trace frame: 0x82a57e05350, count: -6 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(ffffffff830762ca) at panic+0x1e5 sys/kern/subr_prf.c:198 witness_checkorder(fffffd806c1bdd10,1,0) at witness_checkorder+0x1113 sys/kern/subr_witness.c:843 rw_enter(fffffd806c1bdd00,2) at rw_enter+0x122 uvmfault_lookup(ffff80002a085b70,0) at uvmfault_lookup+0x122 sys/uvm/uvm_fault.c:1785 uvm_fault_check(ffff80002a085b70,ffff80002a085ba8,ffff80002a085bd0) at uvm_fault_check+0x47 sys/uvm/uvm_fault.c:672 uvm_fault(fffffd806c1bdc20,20000000,0,2) at uvm_fault+0x112 sys/uvm/uvm_fault.c:600 kpageflttrap(ffff80002a085d10,20000158) at kpageflttrap+0x2d0 sys/arch/amd64/amd64/trap.c:279 kerntrap(ffff80002a085d10) at kerntrap+0x14a sys/arch/amd64/amd64/trap.c:332 alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b copyout() at copyout+0x62 kern_sysctl(ffff80002a086094,5,20000100,ffff80002a0860c8,0,37,ebd8eaedd7439a91) at kern_sysctl+0x320 sys/kern/kern_sysctl.c:500 sys_sysctl(ffff800031b7f6f8,ffff80002a086200,ffff80002a086150) at sys_sysctl+0x422 syscall(ffff80002a086200) at syscall+0xbb6 mi_syscall sys/sys/syscall_mi.h:179 [inline] syscall(ffff80002a086200) at syscall+0xbb6 sys/arch/amd64/amd64/trap.c:577 end trace frame: 0xffff80002a086280, count: 0 ddb{1}> trace db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff830762ca) at panic+0x1e5 sys/kern/subr_prf.c:198 witness_checkorder(fffffd806c1bdd10,1,0) at witness_checkorder+0x1113 sys/kern/subr_witness.c:843 rw_enter(fffffd806c1bdd00,2) at rw_enter+0x122 uvmfault_lookup(ffff80002a085b70,0) at uvmfault_lookup+0x122 sys/uvm/uvm_fault.c:1785 uvm_fault_check(ffff80002a085b70,ffff80002a085ba8,ffff80002a085bd0) at uvm_fault_check+0x47 sys/uvm/uvm_fault.c:672 uvm_fault(fffffd806c1bdc20,20000000,0,2) at uvm_fault+0x112 sys/uvm/uvm_fault.c:600 kpageflttrap(ffff80002a085d10,20000158) at kpageflttrap+0x2d0 sys/arch/amd64/amd64/trap.c:279 kerntrap(ffff80002a085d10) at kerntrap+0x14a sys/arch/amd64/amd64/trap.c:332 alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b copyout() at copyout+0x62 kern_sysctl(ffff80002a086094,5,20000100,ffff80002a0860c8,0,37,ebd8eaedd7439a91) at kern_sysctl+0x320 sys/kern/kern_sysctl.c:500 sys_sysctl(ffff800031b7f6f8,ffff80002a086200,ffff80002a086150) at sys_sysctl+0x422 syscall(ffff80002a086200) at syscall+0xbb6 mi_syscall sys/sys/syscall_mi.h:179 [inline] syscall(ffff80002a086200) at syscall+0xbb6 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x82ae09f41f0, count: -15