panic: uvm_WfaNuIlNG:nSPL _lT LOWEREDdress notC iLnL m7a3p 573S44 EXIT at 0 a db_enter+0x25: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND *311627 7676 0 0 0x4000000 0K syz-executor 481417 7676 0 0 0x4000000 1 syz-executor db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438 panic(ffffffff834264e6) at panic+0x1e5 sys/kern/subr_prf.c:198 uvm_fault_unwire_locked(fffffd806be4d738,2000000b0000,2000000c0000) at uvm_fault_unwire_locked+0x4ed uvm_fault_wire(fffffd806be4d738,2000000b0000,2000000c1000,3) at uvm_fault_wire+0x12d uvm_fault_unwire sys/uvm/uvm_fault.c:1702 [inline] uvm_fault_wire(fffffd806be4d738,2000000b0000,2000000c1000,3) at uvm_fault_wire+0x12d sys/uvm/uvm_fault.c:1684 uvm_vslock_device(ffff80002a415c68,2000000b0040,10000,3,ffff80003c4ed2b0) at uvm_vslock_device+0x112 sys/uvm/uvm_glue.c:169 physio(ffffffff832e2590,d02,8000,ffffffff832e2df0,ffff80003c4ed568) at physio+0x277 sys/kern/kern_physio.c:139 spec_read(ffff80003c4ed3d0) at spec_read+0x155 sys/kern/spec_vnops.c:215 VOP_READ(fffffd8066d3b050,ffff80003c4ed568,0,fffffd807f7d26e8) at VOP_READ+0x102 sys/kern/vfs_vops.c:227 vn_read(fffffd8009f42d28,ffff80003c4ed568,1) at vn_read+0x17b sys/kern/vfs_vnops.c:369 dofilereadv(ffff80002a415c68,3,ffff80003c4ed568,1,ffff80003c4ed620) at dofilereadv+0x230 sys/kern/sys_generic.c:252 sys_pread(ffff80002a415c68,ffff80003c4ed6d0,ffff80003c4ed620) at sys_pread+0xae sys/kern/vfs_syscalls.c:3311 syscall(ffff80003c4ed6d0) at syscall+0xbc6 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c4ed6d0) at syscall+0xbc6 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x47fb11ea7f0, count: 2 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: uvm_fault_unwire_locked: address not in map ddb{0}> trace db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438 panic(ffffffff834264e6) at panic+0x1e5 sys/kern/subr_prf.c:198 uvm_fault_unwire_locked(fffffd806be4d738,2000000b0000,2000000c0000) at uvm_fault_unwire_locked+0x4ed uvm_fault_wire(fffffd806be4d738,2000000b0000,2000000c1000,3) at uvm_fault_wire+0x12d uvm_fault_unwire sys/uvm/uvm_fault.c:1702 [inline] uvm_fault_wire(fffffd806be4d738,2000000b0000,2000000c1000,3) at uvm_fault_wire+0x12d sys/uvm/uvm_fault.c:1684 uvm_vslock_device(ffff80002a415c68,2000000b0040,10000,3,ffff80003c4ed2b0) at uvm_vslock_device+0x112 sys/uvm/uvm_glue.c:169 physio(ffffffff832e2590,d02,8000,ffffffff832e2df0,ffff80003c4ed568) at physio+0x277 sys/kern/kern_physio.c:139 spec_read(ffff80003c4ed3d0) at spec_read+0x155 sys/kern/spec_vnops.c:215 VOP_READ(fffffd8066d3b050,ffff80003c4ed568,0,fffffd807f7d26e8) at VOP_READ+0x102 sys/kern/vfs_vops.c:227 vn_read(fffffd8009f42d28,ffff80003c4ed568,1) at vn_read+0x17b sys/kern/vfs_vnops.c:369 dofilereadv(ffff80002a415c68,3,ffff80003c4ed568,1,ffff80003c4ed620) at dofilereadv+0x230 sys/kern/sys_generic.c:252 sys_pread(ffff80002a415c68,ffff80003c4ed6d0,ffff80003c4ed620) at sys_pread+0xae sys/kern/vfs_syscalls.c:3311 syscall(ffff80003c4ed6d0) at syscall+0xbc6 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c4ed6d0) at syscall+0xbc6 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x47fb11ea7f0, count: -13 ddb{0}> show registers rdi 0 rsi 0x1 rbp 0xffff80003c4ecff0 rbx 0xffffffff837d4dc7 cpu_info_full_primary+0x2dc7 rdx 0xffff800001484280 rcx 0xffff80002a415c68 rax 0xffffffff837d3ff0 cpu_info_full_primary+0x1ff0 r8 0x101010101010101 r9 0x8080808080808080 r10 0x734bf27937428b1 r11 0xaaf5c7e501f2a33d r12 0xffffffff837d4bc8 cpu_info_full_primary+0x2bc8 r13 0 r14 0 r15 0x1 rip 0xffffffff81640465 db_enter+0x25 cs 0x8 rflags 0x246 rsp 0xffff80003c4ecfe0 ss 0 db_enter+0x25: addq $0x8,%rsp ddb{0}> show proc PROC (syz-executor) tid=311627 pid=7676 tcnt=3 stat=onproc flags process=0 proc=4000000 runpri=32, usrpri=82, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff80002a414038,0xffff80003c4e2d08 process=0xffff80003c4d84b8 user=0xffff80003c4e8000, vmspace=0xfffffd806be4d738 estcpu=32, cpticks=1, pctcpu=0.0, user=0, sys=1, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 47205 510962 85448 60929 3 0x90 nanoslp syz-executor 47205 180190 85448 60929 3 0x4000090 kqread syz-executor 47205 36316 85448 60929 3 0x4000090 fsleep syz-executor 45970 460326 84035 0 3 0x80 nanoslp syz-executor 45970 386826 84035 0 3 0x4000080 lockf syz-executor 45970 40894 84035 0 3 0x4000080 fsleep syz-executor 7676 230683 33712 0 2 0 syz-executor * 7676 311627 33712 0 7 0x4000000 syz-executor 7676 481417 33712 0 7 0x4000000 syz-executor 73676 481328 50518 0 3 0x80 nanoslp syz-executor 73676 373311 50518 0 3 0x4000080 kqpoll syz-executor 73676 441131 50518 0 3 0x4000080 fsleep syz-executor 18762 121802 0 0 3 0x14200 acct acct 59515 266824 1 0 3 0x80 nanoslp init 49847 275007 41276 0 3 0x82 sbwait sshd-session 56768 106804 0 0 3 0x14280 nfsidl nfsio 20623 170643 0 0 3 0x14280 nfsidl nfsio 97045 226028 0 0 3 0x14280 nfsidl nfsio 12431 456906 0 0 3 0x14280 nfsidl nfsio 19584 172633 0 0 3 0x14280 nfsidl nfsio 46222 129064 0 0 3 0x14280 nfsidl nfsio 4032 404450 0 0 3 0x14280 nfsidl nfsio 83317 338130 0 0 3 0x14280 nfsidl nfsio 86004 27630 0 0 3 0x14280 nfsidl nfsio 60821 108827 0 0 3 0x14280 nfsidl nfsio 91833 121524 0 0 3 0x14280 nfsidl nfsio 78737 370833 0 0 3 0x14280 nfsidl nfsio 34742 175201 0 0 3 0x14280 nfsidl nfsio 3879 75591 0 0 3 0x14280 nfsidl nfsio 48772 486373 0 0 3 0x14280 nfsidl nfsio 25798 238901 0 0 3 0x14280 nfsidl nfsio 38592 101049 0 0 3 0x14280 nfsidl nfsio 6568 504375 0 0 3 0x14280 nfsidl nfsio 34491 511926 0 0 3 0x14280 nfsidl nfsio 87501 379335 0 0 3 0x14280 nfsidl nfsio 63256 422306 0 0 3 0x14200 bored sosplice 85448 210836 28731 0 3 0x82 nanoslp syz-executor 84035 426329 28731 0 3 0x82 nanoslp syz-executor 25133 463851 28731 0 3 0x82 nanoslp syz-executor 33712 74400 28731 0 3 0x82 nanoslp syz-executor 88491 50248 28731 0 3 0x82 nanoslp syz-executor 32963 19526 28731 0 3 0x82 nanoslp syz-executor 70733 515163 28731 0 3 0x82 wait syz-executor 50518 112034 28731 0 3 0x82 nanoslp syz-executor 28731 346474 3033 0 3 0x82 kqread syz-executor 3033 416214 25276 0 3 0x10008a sigsusp ksh 25276 363411 99833 0 3 0x98 kqread sshd-session 99833 398062 41276 0 3 0x92 kqread sshd-session 41276 330900 1 0 3 0x88 kqread sshd 28811 200608 97254 74 3 0x1100092 bpf pflogd 97254 290397 1 0 3 0x80 sbwait pflogd 87485 18413 57985 73 3 0x1100090 kqread syslogd 57985 367153 1 0 3 0x100082 sbwait syslogd 6073 508306 1 0 3 0x100080 kqread resolvd 72063 174319 65729 77 3 0x100092 kqread dhcpleased 12198 389386 65729 77 3 0x100092 kqread dhcpleased 65729 349625 1 0 3 0x80 kqread dhcpleased 68381 167042 0 0 3 0x14200 bored smr 88016 373035 0 0 2 0x14200 zerothread 28003 37734 0 0 3 0x14200 aiodoned aiodoned 29867 483596 0 0 3 0x14200 syncer update 22270 421845 0 0 3 0x14200 cleaner cleaner 60788 283261 0 0 3 0x14200 reaper reaper 95788 352239 0 0 3 0x14200 pgdaemon pagedaemon 50093 263967 0 0 3 0x14200 bored viomb 9446 274360 0 0 3 0x40014200 acpi0 acpi0 29356 44499 0 0 3 0x40014200 idle1 57427 169339 0 0 3 0x14200 bored softnet3 99148 493263 0 0 3 0x14200 bored softnet2 73632 1397 0 0 3 0x14200 bored softnet1 92358 212890 0 0 3 0x14200 bored softnet0 51193 72571 0 0 3 0x14200 bored systqmp 82451 151471 0 0 3 0x14200 bored systq 3765 420548 0 0 3 0x14200 tmoslp softclockmp 30255 379555 0 0 3 0x40014200 tmoslp softclock 27363 203798 0 0 3 0x40014200 idle0 1 304409 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks CPU 1: exclusive mutex &(curpg)->mdpage.pv_mtx r = 0 (0xfffffd80085306b8) #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 sys/kern/kern_lock.c:-1 #2 mtx_enter+0x60 sys/kern/kern_lock.c:239 #3 pmap_page_remove+0x51 sys/arch/amd64/amd64/pmap.c:1967 #4 uvm_anfree_list+0xd6 sys/uvm/uvm_anon.c:104 #5 amap_wiperange_chunk+0x1a8 sys/uvm/uvm_amap.c:983 #6 amap_pp_adjref+0x6f4 sys/uvm/uvm_amap.c:944 #7 amap_adjref_anons+0x22d sys/uvm/uvm_amap.c:1329 #8 uvm_unmap_detach+0x8a sys/uvm/uvm_map.c:1353 #9 sys_munmap+0x32f sys/uvm/uvm_mmap.c:544 #10 syscall+0xbc6 mi_syscall sys/sys/syscall_mi.h:176 [inline] #10 syscall+0xbc6 sys/arch/amd64/amd64/trap.c:577 #11 Xsyscall+0x128 Process 7676 (syz-executor) thread 0xffff80002a415c68 (311627) Process 7676 (syz-executor) thread 0xffff80003c4e2cf8 (481417) ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10234 11092K 11528K 166960K 12255 0 pcb 17 13K 14K 166960K 169 0 rtable 256 9K 9K 166960K 434 0 pf 43 19K 19K 166960K 92 0 ifaddr 47 8K 8K 166960K 69 0 ifgroup 69 3K 3K 166960K 112 0 sysctl 1 1K 1K 166960K 1 0 counters 74 37K 37K 166960K 116 0 ioctlops 0 0K 4K 166960K 1578 0 iov 0 0K 16K 166960K 22 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1378 87K 87K 166960K 1833 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 9K 166960K 12 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 0K 166960K 24 0 dirhash 12 2K 2K 166960K 15 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 18 65K 110K 166960K 588 0 sigio 0 0K 0K 166960K 14 0 proc 66 91K 128K 166960K 595 0 subproc 72 4K 4K 166960K 72 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 59 0 in_multi 100 7K 7K 166960K 122 0 ether_multi 1 0K 0K 166960K 6 0 mrt 0 0K 0K 166960K 4 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 181 811K 811K 166960K 181 0 exec 0 0K 1K 166960K 424 0 fusefs mount 1 32K 32K 166960K 1 0 pfkey data 0 0K 0K 166960K 2 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 271 172K 190K 166960K 7280 0 UVM aobj 15 2K 2K 166960K 15 0 pinsyscall 44 88K 102K 166960K 1704 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 2 0K 0K 166960K 31 0 NDP 15 0K 1K 166960K 46 0 temp 60 8687K 8753K 166960K 22752 0 kqueue 15 24K 26K 166960K 87 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 65 0 62 1 0 1 1 0 8 0 rtentry 168 127 0 11 6 0 6 6 0 8 0 unpcb 144 384 0 365 4 2 2 4 0 8 1 syncache 336 5 0 5 2 2 0 1 0 8 0 tcpcb 808 170 0 159 9 7 2 8 0 8 0 arp 120 20 0 1 1 0 1 1 0 8 0 inpcb 376 538 0 522 10 7 3 9 0 8 1 nd6 136 27 0 1 1 0 1 1 0 8 0 pkpcb 40 5 0 5 2 1 1 1 0 8 1 kcovpl 48 8 0 0 1 0 1 1 0 8 0 mppekey 1024 1 0 1 1 1 0 1 0 8 0 ppxss 1168 19 0 17 1 0 1 1 0 8 0 pppxif 1480 4 0 2 2 1 1 1 0 8 0 pffrag 232 2 0 0 1 0 1 1 0 482 0 pffrnode 88 2 0 0 1 0 1 1 0 8 0 pffrent 40 2 0 0 1 0 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 pfstitem 24 47 0 17 1 0 1 1 0 8 0 pfstkey 128 47 0 17 2 0 2 2 0 8 0 pfstate 376 45 0 16 4 0 4 4 0 8 0 pfrule 1344 21 0 15 2 0 2 2 0 8 0 art_heap8 4096 3 0 0 3 0 3 3 0 8 0 art_heap4 256 477 0 16 29 0 29 29 0 8 0 art_table 32 480 0 16 4 0 4 4 0 8 0 art_node 16 122 0 17 1 0 1 1 0 8 0 sysvmsgpl 40 4 0 4 1 0 1 1 0 8 1 semupl 112 2 0 2 2 1 1 1 0 8 1 semapl 112 21 0 11 1 0 1 1 0 8 0 shmpl 112 12 0 0 1 0 1 1 0 8 0 dirhash 1024 19 0 2 3 0 3 3 0 8 0 dino2pl 256 2420 0 907 95 0 95 95 0 8 0 ffsino 280 2420 0 907 109 0 109 109 0 8 0 nchpl 144 3288 0 1587 63 0 63 63 0 8 0 rtmask 32 2 0 2 1 1 0 1 0 8 0 uvmvnodes 80 2792 0 0 57 0 57 57 0 8 0 vnodes 216 2792 0 0 156 0 156 156 0 8 0 namei 1024 10849 0 10849 2 1 1 1 0 8 1 percpumem 16 72 0 21 1 0 1 1 0 8 0 kstatmem 264 60 0 30 2 0 2 2 0 8 0 scsiplug 72 1 0 1 1 1 0 1 0 8 0 scxspl 216 10000 0 10000 10 2 8 8 1 8 8 plimitpl 152 92 0 75 1 0 1 1 0 8 0 sigapl 424 914 0 841 10 1 9 9 0 8 0 futexpl 64 7761 0 7758 1 0 1 1 0 8 0 knotepl 120 315 0 0 10 0 10 10 0 8 0 kqueuepl 216 246 0 235 8 6 2 5 0 8 1 pipepl 328 143 0 116 3 0 3 3 0 8 0 fdescpl 504 874 0 841 5 0 5 5 0 8 0 filepl 152 4872 0 4572 16 4 12 13 0 8 0 lockfpl 104 209 0 139 2 0 2 2 0 8 0 lockfspl 48 55 0 50 1 0 1 1 0 8 0 sessionpl 144 25 0 16 1 0 1 1 0 8 0 pgrppl 48 41 0 24 1 0 1 1 0 8 0 ucredpl 104 757 0 743 1 0 1 1 0 8 0 zombiepl 144 1095 0 1091 1 0 1 1 0 8 0 processpl 1176 914 0 841 6 0 6 6 0 8 0 procpl 656 1723 0 1642 8 0 8 8 0 8 0 sosppl 168 3 0 3 2 1 1 1 0 8 1 sockpl 688 998 0 959 13 8 5 13 0 8 1 mcl64k 65536 3 0 0 1 0 1 1 0 8 0 mcl9k 9216 1 0 0 1 0 1 1 0 8 0 mcl8k 8192 3 0 0 1 0 1 1 0 8 0 mcl4k 4096 131 0 0 17 0 17 17 0 8 0 mcl2k 2048 23 0 0 3 0 3 3 0 8 0 mtagpl 96 48 0 0 2 0 2 2 0 8 0 mbufpl 256 222 0 0 14 0 14 14 0 8 0 bufpl 280 3148 0 129 216 0 216 216 0 8 0 anonpl 24 142112 0 138185 60 12 48 48 0 184 17 amapchunkpl 152 22698 0 22111 36 11 25 30 0 158 2 amappl16 200 2620 0 2586 21 10 11 15 0 8 8 amappl15 192 8 0 8 1 1 0 1 0 8 0 amappl14 184 118 0 106 1 0 1 1 0 8 0 amappl13 176 29 0 29 1 1 0 1 0 8 0 amappl12 168 1531 0 1499 3 1 2 2 0 8 0 amappl11 160 56 0 42 1 0 1 1 0 8 0 amappl10 152 7 0 6 1 0 1 1 0 8 0 amappl9 144 265 0 264 1 0 1 1 0 8 0 amappl8 136 21 0 18 1 0 1 1 0 8 0 amappl7 128 111 0 99 1 0 1 1 0 8 0 amappl6 120 218 0 214 1 0 1 1 0 8 0 amappl5 112 151 0 140 1 0 1 1 0 8 0 amappl4 104 328 0 310 1 0 1 1 0 8 0 amappl3 96 4427 0 4298 4 0 4 4 0 8 0 amappl2 88 692 0 623 2 0 2 2 0 8 0 amappl1 80 10629 0 9961 15 0 15 15 0 8 0 amappl 88 6472 0 6278 5 0 5 5 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 dma512 512 1 0 1 1 0 1 1 0 8 1 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 7 0 7 2 2 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 14 0 0 1 0 1 1 0 8 0 uaddrrnd 24 874 0 841 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 874 0 841 1 0 1 1 0 8 0 vmmpekpl 168 8941 0 8899 3 0 3 3 0 8 0 vmmpepl 168 61301 0 59122 104 3 101 104 0 357 4 vmsppl 456 873 0 841 5 0 5 5 0 8 0 rwobjpl 64 21356 0 17513 63 0 63 63 0 8 0 pdppl 4096 1756 0 1682 102 28 74 84 0 8 0 pvpl 32 15592 0 0 127 1 126 126 0 265 0 pmappl 248 873 0 841 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 294 0 42 8 0 8 8 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:438 panic(ffffffff834264e6) at panic+0x1e5 sys/kern/subr_prf.c:198 uvm_fault_unwire_locked(fffffd806be4d738,2000000b0000,2000000c0000) at uvm_fault_unwire_locked+0x4ed uvm_fault_wire(fffffd806be4d738,2000000b0000,2000000c1000,3) at uvm_fault_wire+0x12d uvm_fault_unwire sys/uvm/uvm_fault.c:1702 [inline] uvm_fault_wire(fffffd806be4d738,2000000b0000,2000000c1000,3) at uvm_fault_wire+0x12d sys/uvm/uvm_fault.c:1684 uvm_vslock_device(ffff80002a415c68,2000000b0040,10000,3,ffff80003c4ed2b0) at uvm_vslock_device+0x112 sys/uvm/uvm_glue.c:169 physio(ffffffff832e2590,d02,8000,ffffffff832e2df0,ffff80003c4ed568) at physio+0x277 sys/kern/kern_physio.c:139 spec_read(ffff80003c4ed3d0) at spec_read+0x155 sys/kern/spec_vnops.c:215 VOP_READ(fffffd8066d3b050,ffff80003c4ed568,0,fffffd807f7d26e8) at VOP_READ+0x102 sys/kern/vfs_vops.c:227 vn_read(fffffd8009f42d28,ffff80003c4ed568,1) at vn_read+0x17b sys/kern/vfs_vnops.c:369 dofilereadv(ffff80002a415c68,3,ffff80003c4ed568,1,ffff80003c4ed620) at dofilereadv+0x230 sys/kern/sys_generic.c:252 sys_pread(ffff80002a415c68,ffff80003c4ed6d0,ffff80003c4ed620) at sys_pread+0xae sys/kern/vfs_syscalls.c:3311 syscall(ffff80003c4ed6d0) at syscall+0xbc6 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c4ed6d0) at syscall+0xbc6 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x47fb11ea7f0, count: -13 ddb{0}> machine ddbcpu 1 Stopped at x86_ipi_db+0x27: addq $0x8,%rsp x86_ipi_db(ffff800029a9bff0) at x86_ipi_db+0x27 sys/arch/amd64/amd64/db_interface.c:394 x86_ipi_handler() at x86_ipi_handler+0xd9 sys/arch/amd64/amd64/ipi.c:106 Xresume_lapic_ipi() at Xresume_lapic_ipi+0x27 alltraps_kern_meltdown() at alltraps_kern_meltdown+0x68 savectx() at savectx+0xae end of kernel end trace frame: 0x47fceb72000, count: 10 ddb{1}> trace x86_ipi_db(ffff800029a9bff0) at x86_ipi_db+0x27 sys/arch/amd64/amd64/db_interface.c:394 x86_ipi_handler() at x86_ipi_handler+0xd9 sys/arch/amd64/amd64/ipi.c:106 Xresume_lapic_ipi() at Xresume_lapic_ipi+0x27 alltraps_kern_meltdown() at alltraps_kern_meltdown+0x68 savectx() at savectx+0xae end of kernel end trace frame: 0x47fceb72000, count: -5