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 359147 28172 0 0x14000 0x200 1 zerothread *490499 570 0 0x14000 0x200 0 reaper db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff8306a658) at panic+0x1e5 sys/kern/subr_prf.c:198 witness_checkorder(ffffffff83557818,1,0) at witness_checkorder+0x1197 witness_debugger sys/kern/subr_witness.c:2518 [inline] witness_checkorder(ffffffff83557818,1,0) at witness_checkorder+0x1197 sys/kern/subr_witness.c:780 rw_enter_read(ffffffff83557808) at rw_enter_read+0xab sys/kern/kern_rwlock.c:112 uvmfault_lookup(ffff800029fe54f0,0) at uvmfault_lookup+0x122 sys/uvm/uvm_fault.c:1785 uvm_fault_check(ffff800029fe54f0,ffff800029fe5528,ffff800029fe5550) at uvm_fault_check+0x47 sys/uvm/uvm_fault.c:672 uvm_fault(ffffffff83557728,7f874b42e000,0,2) at uvm_fault+0x112 sys/uvm/uvm_fault.c:600 kpageflttrap(ffff800029fe5690,7f874b42eaf8) at kpageflttrap+0x2d0 sys/arch/amd64/amd64/trap.c:279 kerntrap(ffff800029fe5690) at kerntrap+0x14a sys/arch/amd64/amd64/trap.c:332 alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b pmap_page_remove(fffffd80087f8580) at pmap_page_remove+0x45d _atomic_swap_64 machine/atomic.h:117 [inline] pmap_page_remove(fffffd80087f8580) at pmap_page_remove+0x45d sys/arch/amd64/amd64/pmap.c:2005 uvm_anfree_list(fffffd805ea6ca98,0) at uvm_anfree_list+0xd6 amap_wipeout(fffffd806a19d850) at amap_wipeout+0x248 sys/uvm/uvm_amap.c:502 uvm_unmap_detach(ffff800029fe58c0,0) at uvm_unmap_detach+0x8a sys/uvm/uvm_map.c:1353 end trace frame: 0xffff800029fe5900, 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(ffffffff8306a658) at panic+0x1e5 sys/kern/subr_prf.c:198 witness_checkorder(ffffffff83557818,1,0) at witness_checkorder+0x1197 witness_debugger sys/kern/subr_witness.c:2518 [inline] witness_checkorder(ffffffff83557818,1,0) at witness_checkorder+0x1197 sys/kern/subr_witness.c:780 rw_enter_read(ffffffff83557808) at rw_enter_read+0xab sys/kern/kern_rwlock.c:112 uvmfault_lookup(ffff800029fe54f0,0) at uvmfault_lookup+0x122 sys/uvm/uvm_fault.c:1785 uvm_fault_check(ffff800029fe54f0,ffff800029fe5528,ffff800029fe5550) at uvm_fault_check+0x47 sys/uvm/uvm_fault.c:672 uvm_fault(ffffffff83557728,7f874b42e000,0,2) at uvm_fault+0x112 sys/uvm/uvm_fault.c:600 kpageflttrap(ffff800029fe5690,7f874b42eaf8) at kpageflttrap+0x2d0 sys/arch/amd64/amd64/trap.c:279 kerntrap(ffff800029fe5690) at kerntrap+0x14a sys/arch/amd64/amd64/trap.c:332 alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b pmap_page_remove(fffffd80087f8580) at pmap_page_remove+0x45d _atomic_swap_64 machine/atomic.h:117 [inline] pmap_page_remove(fffffd80087f8580) at pmap_page_remove+0x45d sys/arch/amd64/amd64/pmap.c:2005 uvm_anfree_list(fffffd805ea6ca98,0) at uvm_anfree_list+0xd6 amap_wipeout(fffffd806a19d850) at amap_wipeout+0x248 sys/uvm/uvm_amap.c:502 uvm_unmap_detach(ffff800029fe58c0,0) at uvm_unmap_detach+0x8a sys/uvm/uvm_map.c:1353 uvm_map_teardown(fffffd806ecd6530) at uvm_map_teardown+0x35e sys/uvm/uvm_map.c:2518 uvmspace_free(fffffd806ecd6530) at uvmspace_free+0xcd sys/uvm/uvm_map.c:3422 reaper(ffff800029fd9448) at reaper+0x256 sys/kern/kern_exit.c:480 end trace frame: 0x0, count: -17 ddb{0}> show registers rdi 0 rsi 0x1 rbp 0xffff800029fe5150 rbx 0xffffffff83496d87 cpu_info_full_primary+0x2d87 rdx 0 rcx 0xffff800029fd9448 rax 0xffffffff83495ff0 cpu_info_full_primary+0x1ff0 r8 0x101010101010101 r9 0x8080808080808080 r10 0xcd8e82afb8ba4b5b r11 0x9f15f3f5883a703a r12 0xffffffff83496b88 cpu_info_full_primary+0x2b88 r13 0 r14 0 r15 0x1 rip 0xffffffff81b17345 db_enter+0x25 cs 0x8 rflags 0x246 rsp 0xffff800029fe5140 ss 0x10 db_enter+0x25: addq $0x8,%rsp ddb{0}> show proc PROC (reaper) tid=490499 pid=570 tcnt=1 stat=onproc flags process=14000 proc=200 runpri=4, usrpri=86, slppri=4, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff800029fd96d0,0xffff800029fd8f48 process=0xffff800029feba88 user=0xffff800029fe0000, vmspace=0xffffffff83557728 estcpu=36, cpticks=65, pctcpu=26.59, user=0, sys=28348, intr=167 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 91377 383815 61813 0 3 0x8000082 piperd syz-executor 57226 475536 61813 0 3 0x8000082 piperd syz-executor 36028 108815 61813 0 3 0x8000082 piperd syz-executor 33987 465040 61813 0 3 0x8000082 piperd syz-executor 84537 43716 61813 0 3 0x8000082 piperd syz-executor 43669 313863 61813 0 3 0x8000082 piperd syz-executor 54719 384781 61813 0 3 0x8000082 piperd syz-executor 68170 197366 1 0 3 0x18100083 ttyin getty 26048 180717 0 0 3 0x14280 nfsidl nfsio 76079 138901 0 0 3 0x14280 nfsidl nfsio 43102 246333 0 0 3 0x14280 nfsidl nfsio 94604 435807 0 0 3 0x14280 nfsidl nfsio 91041 424684 0 0 3 0x14280 nfsidl nfsio 24251 512660 0 0 3 0x14280 nfsidl nfsio 17677 196831 0 0 3 0x14280 nfsidl nfsio 81018 150954 0 0 3 0x14280 nfsidl nfsio 10627 253168 0 0 3 0x14280 nfsidl nfsio 51440 250659 0 0 3 0x14280 nfsidl nfsio 50207 113848 0 0 3 0x14280 nfsidl nfsio 25428 14626 0 0 3 0x14280 nfsidl nfsio 52358 7735 0 0 3 0x14280 nfsidl nfsio 59128 330468 0 0 3 0x14280 nfsidl nfsio 63580 126803 0 0 3 0x14280 nfsidl nfsio 8272 382027 0 0 3 0x14280 nfsidl nfsio 3694 357081 0 0 3 0x14280 nfsidl nfsio 70903 395097 0 0 3 0x14280 nfsidl nfsio 19109 358488 0 0 3 0x14280 nfsidl nfsio 86711 92867 0 0 3 0x14280 nfsidl nfsio 14201 283584 0 0 3 0x14200 bored sosplice 61813 115001 45777 0 3 0x8000082 wait syz-executor 45777 343521 63308 0 3 0x810008a sigsusp ksh 63308 188216 74905 0 3 0x18000098 kqread sshd-session 74905 453734 45560 0 3 0x18000092 kqread sshd-session 45560 243867 1 0 3 0x18000088 kqread sshd 7835 495933 71116 74 3 0x19100092 bpf pflogd 71116 260863 1 0 3 0x18000080 sbwait pflogd 49533 342811 76399 73 3 0x19100010 biowait syslogd 76399 433923 1 0 3 0x18100082 sbwait syslogd 82543 349938 1 0 3 0x18100080 kqread resolvd 5308 467426 79768 77 3 0x18100092 kqread dhcpleased 22131 444358 79768 77 2 0x18100012 dhcpleased 79768 364573 1 0 3 0x18000080 kqread dhcpleased 62721 268188 0 0 3 0x14200 bored smr 28172 359147 0 0 7 0x14200 zerothread 43852 56592 0 0 3 0x14200 aiodoned aiodoned 70526 467065 0 0 3 0x14200 syncer update 56649 299589 0 0 3 0x14200 cleaner cleaner * 570 490499 0 0 7 0x14200 reaper 57087 267595 0 0 3 0x14200 pgdaemon pagedaemon 13033 128999 0 0 3 0x14200 bored viomb 5707 265621 0 0 3 0x40014200 acpi0 acpi0 89436 40352 0 0 3 0x40014200 idle1 40594 300001 0 0 3 0x14200 bored softnet3 45838 398062 0 0 3 0x14200 bored softnet2 80521 89023 0 0 3 0x14200 bored softnet1 76634 521206 0 0 3 0x14200 bored softnet0 44434 131560 0 0 3 0x14200 bored systqmp 86309 406274 0 0 3 0x14200 bored systq 8865 168145 0 0 3 0x14200 tmoslp softclockmp 49179 492724 0 0 3 0x40014200 tmoslp softclock 20247 257507 0 0 3 0x40014200 idle0 1 302418 0 0 3 0x8000082 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks CPU 0: exclusive mutex &pmap->pm_mtx r = 0 (0xfffffd806a24b9d0) #0 witness_lock+0x5b8 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5b8 sys/kern/subr_witness.c:1151 #1 mtx_enter_try+0x178 #2 mtx_enter+0x60 sys/kern/kern_lock.c:239 #3 pmap_page_remove+0xcd rcr3 machine/cpufunc.h:139 [inline] #3 pmap_page_remove+0xcd pmap_map_ptes sys/arch/amd64/amd64/pmap.c:430 [inline] #3 pmap_page_remove+0xcd sys/arch/amd64/amd64/pmap.c:1965 #4 uvm_anfree_list+0xd6 #5 amap_wipeout+0x248 sys/uvm/uvm_amap.c:502 #6 uvm_unmap_detach+0x8a sys/uvm/uvm_map.c:1353 #7 uvm_map_teardown+0x35e sys/uvm/uvm_map.c:2518 #8 uvmspace_free+0xcd sys/uvm/uvm_map.c:3422 #9 reaper+0x256 sys/kern/kern_exit.c:480 #10 proc_trampoline+0x10 Process 49533 (syslogd) thread 0xffff8000ffffd960 (342811) exclusive rrwlock inode r = 0 (0xfffffd806e4970a0) #0 witness_lock+0x5b8 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5b8 sys/kern/subr_witness.c:1151 #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_fsync+0x152 sys/kern/vfs_syscalls.c:2927 #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 570 (reaper) thread 0xffff800029fd9448 (490499) exclusive rwlock amaplk r = 0 (0xfffffd8071b849b8) #0 witness_lock+0x5b8 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5b8 sys/kern/subr_witness.c:1151 #1 amap_unref+0x38 sys/uvm/uvm_amap.c:1360 #2 uvm_unmap_detach+0x8a sys/uvm/uvm_map.c:1353 #3 uvm_map_teardown+0x35e sys/uvm/uvm_map.c:2518 #4 uvmspace_free+0xcd sys/uvm/uvm_map.c:3422 #5 reaper+0x256 sys/kern/kern_exit.c:480 #6 proc_trampoline+0x10 exclusive mutex &pmap->pm_mtx r = 0 (0xfffffd806a24b9d0) #0 witness_lock+0x5b8 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5b8 sys/kern/subr_witness.c:1151 #1 mtx_enter_try+0x178 #2 mtx_enter+0x60 sys/kern/kern_lock.c:239 #3 pmap_page_remove+0xcd rcr3 machine/cpufunc.h:139 [inline] #3 pmap_page_remove+0xcd pmap_map_ptes sys/arch/amd64/amd64/pmap.c:430 [inline] #3 pmap_page_remove+0xcd sys/arch/amd64/amd64/pmap.c:1965 #4 uvm_anfree_list+0xd6 #5 amap_wipeout+0x248 sys/uvm/uvm_amap.c:502 #6 uvm_unmap_detach+0x8a sys/uvm/uvm_map.c:1353 #7 uvm_map_teardown+0x35e sys/uvm/uvm_map.c:2518 #8 uvmspace_free+0xcd sys/uvm/uvm_map.c:3422 #9 reaper+0x256 sys/kern/kern_exit.c:480 #10 proc_trampoline+0x10 ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10226 10203K 10814K 166960K 15818 0 pcb 17 20K 22K 166960K 712 0 rtable 218 18K 20K 166960K 4597 0 pf 39 18K 26K 166960K 477 0 ifaddr 40 8K 9K 166960K 594 0 ifgroup 60 2K 3K 166960K 668 0 sysctl 4 1K 3K 166960K 9 0 counters 66 36K 37K 166960K 378 0 ioctlops 0 0K 4K 166960K 2104 0 iov 0 0K 18K 166960K 229 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1503 94K 95K 166960K 6102 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 16K 28K 166960K 55 0 VM map 2 1K 1K 166960K 2 0 sem 20 20K 36K 166960K 316 0 dirhash 18 3K 3K 166960K 87 0 ACPI 1697 195K 286K 166960K 12548 0 file desc 9 29K 93K 166960K 3908 0 sigio 0 0K 0K 166960K 49 0 proc 70 91K 152K 166960K 4223 0 subproc 91 5K 7K 166960K 1783 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 287 0 in_multi 85 6K 7K 166960K 1556 0 ether_multi 1 0K 0K 166960K 14 0 mrt 1 0K 0K 166960K 11 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 235 1049K 1049K 166960K 235 0 exec 0 0K 1K 166960K 2655 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 177 89K 144K 166960K 31163 0 UVM aobj 171 11K 11K 166960K 174 0 pinsyscall 34 68K 106K 166960K 8287 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 1K 166960K 124 0 NDP 15 0K 1K 166960K 440 0 temp 74 6815K 6944K 166960K 136235 0 kqueue 13 20K 32K 166960K 364 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 120 589 0 586 5 4 1 3 0 8 0 rtentry 112 1637 0 1548 6 3 3 4 0 8 0 unpcb 144 2579 0 2562 24 23 1 8 0 8 0 syncache 336 10 0 10 8 8 0 1 0 8 0 tcpqe 32 1 0 1 1 1 0 1 0 8 0 tcpcb 808 1404 0 1400 56 55 1 14 0 8 0 arp 120 284 0 268 1 0 1 1 0 8 0 inpcb 336 4844 0 4837 75 74 1 18 0 8 0 nd6 136 429 0 408 2 1 1 2 0 8 0 pkpcb 40 45 0 45 8 8 0 1 0 8 0 kcovpl 48 137 0 130 1 0 1 1 0 8 0 ppxss 1168 14 0 14 8 8 0 1 0 8 0 pfstscr 40 2 0 2 1 1 0 1 0 8 0 pffrag 232 14 0 14 1 1 0 1 0 482 0 pffrnode 88 14 0 14 1 1 0 1 0 8 0 pffrent 40 32 0 32 1 1 0 1 0 8 0 pfosfp 40 1429 0 1005 5 0 5 5 0 8 0 pfosfpen 112 1429 0 714 21 0 21 21 0 8 0 pfrktable 1344 37 0 31 1 0 1 1 0 8 0 pfanchor 1288 17 0 10 1 0 1 1 0 8 0 pftag 88 3 0 0 1 0 1 1 0 8 0 pfstitem 24 270 0 252 1 0 1 1 0 8 0 pfstkey 128 276 0 258 2 0 2 2 0 8 0 pfstate 376 272 0 255 7 4 3 6 0 8 0 pfrule 1344 111 0 101 2 1 1 2 0 8 0 art_heap8 4096 2 0 0 2 0 2 2 0 8 0 art_heap4 256 6201 0 5826 42 15 27 30 0 8 0 art_table 32 6203 0 5826 4 0 4 4 0 8 0 art_node 16 1568 0 1489 1 0 1 1 0 8 0 sysvmsgpl 40 15 0 5 1 0 1 1 0 8 0 semupl 112 1 0 1 1 1 0 1 0 8 0 semapl 112 310 0 292 1 0 1 1 0 8 0 shmpl 112 171 0 3 5 0 5 5 0 8 0 dirhash 1024 67 0 46 3 0 3 3 0 8 0 dino2pl 256 6045 0 4286 112 1 111 111 0 8 0 ffsino 272 6045 0 4286 118 0 118 118 0 8 0 nchpl 144 9150 0 7289 70 0 70 70 0 8 0 uvmvnodes 80 8023 0 0 164 0 164 164 0 8 0 vnodes 216 8023 0 0 446 0 446 446 0 8 0 namei 1024 51078 0 51078 7 6 1 2 0 8 1 percpumem 16 203 0 156 1 0 1 1 0 8 0 vcpupl 3904 5 0 1 1 0 1 1 0 8 0 vmpool 696 13 0 9 2 1 1 1 0 8 0 pfiaddrpl 120 11 0 9 1 0 1 1 0 8 0 kstatmem 264 338 0 312 4 1 3 3 0 8 0 scsiplug 72 9 0 9 5 5 0 1 0 8 0 scxspl 216 76187 0 76186 21 20 1 8 1 8 0 plimitpl 152 1075 0 1058 1 0 1 1 0 8 0 sigapl 424 3974 0 3911 12 3 9 9 0 8 0 futexpl 64 38091 0 38091 11 11 0 1 0 8 0 knotepl 120 817 0 0 17 0 17 17 0 8 0 kqueuepl 216 1110 0 1101 20 19 1 7 0 8 0 pipepl 320 913 0 886 6 3 3 4 0 8 0 fdescpl 496 3932 0 3909 10 5 5 5 0 8 1 filepl 152 30393 0 30171 76 66 10 20 0 8 0 lockfpl 104 1292 0 1290 3 2 1 2 0 8 0 lockfspl 48 511 0 509 1 0 1 1 0 8 0 sessionpl 144 151 0 142 1 0 1 1 0 8 0 pgrppl 48 334 0 317 1 0 1 1 0 8 0 ucredpl 104 5162 0 5148 1 0 1 1 0 8 0 zombiepl 144 3912 0 3911 1 0 1 1 0 8 0 processpl 1152 3974 0 3911 7 1 6 6 0 8 0 procpl 648 7521 0 7458 9 1 8 8 0 8 1 srpgc 96 22 0 22 6 6 0 1 0 8 0 sosppl 168 14 0 14 4 4 0 1 0 8 0 sockpl 664 8088 0 8061 97 94 3 20 0 8 0 mcl64k 65536 4 0 0 1 0 1 1 0 8 0 mcl12k 12288 2 0 0 1 0 1 1 0 8 0 mcl8k 8192 5 0 0 1 0 1 1 0 8 0 mcl4k 4096 4 0 0 1 0 1 1 0 8 0 mcl2k 2048 325 0 0 31 2 29 31 0 8 0 mtagpl 96 15 0 0 1 0 1 1 0 8 0 mbufpl 256 930 0 0 49 1 48 48 0 8 0 bufpl 280 15114 0 6865 590 0 590 590 0 8 0 anonpl 24 598397 0 595241 175 106 69 97 0 185 23 amapchunkpl 152 99751 0 99446 80 48 32 43 0 158 11 amappl16 200 10613 0 10602 102 100 2 27 0 8 0 amappl15 192 16 0 15 1 0 1 1 0 8 0 amappl14 184 375 0 363 1 0 1 1 0 8 0 amappl13 176 38 0 38 1 1 0 1 0 8 0 amappl12 168 6597 0 6574 4 2 2 3 0 8 0 amappl11 160 64 0 50 1 0 1 1 0 8 0 amappl10 152 12 0 12 1 1 0 1 0 8 0 amappl9 144 150 0 150 1 1 0 1 0 8 0 amappl8 136 51 0 47 1 0 1 1 0 8 0 amappl7 128 364 0 352 1 0 1 1 0 8 0 amappl6 120 1438 0 1436 1 0 1 1 0 8 0 amappl5 112 647 0 635 1 0 1 1 0 8 0 amappl4 104 717 0 696 1 0 1 1 0 8 0 amappl3 96 19042 0 18970 4 0 4 4 0 8 0 amappl2 88 2440 0 2374 2 0 2 2 0 8 0 amappl1 80 26819 0 26264 17 4 13 15 0 8 0 amappl 88 29673 0 29561 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 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 72 173 0 3 4 0 4 4 0 8 0 uaddrrnd 24 3945 0 3918 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 3945 0 3918 1 0 1 1 0 8 0 vmmpekpl 168 34968 0 34898 4 0 4 4 0 8 0 vmmpepl 168 245524 0 244036 157 71 86 109 0 357 2 vmsppl 440 3944 0 3917 8 3 5 5 0 8 0 rwobjpl 56 77062 0 68008 139 9 130 132 0 8 0 pdppl 4096 7897 0 7838 271 194 77 85 0 8 18 pvpl 32 46253 0 0 374 2 372 372 0 265 0 pmappl 248 3944 0 3917 3 0 3 3 0 8 0 extentpl 40 56 0 38 1 0 1 1 0 8 0 phpool 112 788 0 366 13 0 13 13 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(ffffffff8306a658) at panic+0x1e5 sys/kern/subr_prf.c:198 witness_checkorder(ffffffff83557818,1,0) at witness_checkorder+0x1197 witness_debugger sys/kern/subr_witness.c:2518 [inline] witness_checkorder(ffffffff83557818,1,0) at witness_checkorder+0x1197 sys/kern/subr_witness.c:780 rw_enter_read(ffffffff83557808) at rw_enter_read+0xab sys/kern/kern_rwlock.c:112 uvmfault_lookup(ffff800029fe54f0,0) at uvmfault_lookup+0x122 sys/uvm/uvm_fault.c:1785 uvm_fault_check(ffff800029fe54f0,ffff800029fe5528,ffff800029fe5550) at uvm_fault_check+0x47 sys/uvm/uvm_fault.c:672 uvm_fault(ffffffff83557728,7f874b42e000,0,2) at uvm_fault+0x112 sys/uvm/uvm_fault.c:600 kpageflttrap(ffff800029fe5690,7f874b42eaf8) at kpageflttrap+0x2d0 sys/arch/amd64/amd64/trap.c:279 kerntrap(ffff800029fe5690) at kerntrap+0x14a sys/arch/amd64/amd64/trap.c:332 alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b pmap_page_remove(fffffd80087f8580) at pmap_page_remove+0x45d _atomic_swap_64 machine/atomic.h:117 [inline] pmap_page_remove(fffffd80087f8580) at pmap_page_remove+0x45d sys/arch/amd64/amd64/pmap.c:2005 uvm_anfree_list(fffffd805ea6ca98,0) at uvm_anfree_list+0xd6 amap_wipeout(fffffd806a19d850) at amap_wipeout+0x248 sys/uvm/uvm_amap.c:502 uvm_unmap_detach(ffff800029fe58c0,0) at uvm_unmap_detach+0x8a sys/uvm/uvm_map.c:1353 uvm_map_teardown(fffffd806ecd6530) at uvm_map_teardown+0x35e sys/uvm/uvm_map.c:2518 uvmspace_free(fffffd806ecd6530) at uvmspace_free+0xcd sys/uvm/uvm_map.c:3422 reaper(ffff800029fd9448) at reaper+0x256 sys/kern/kern_exit.c:480 end trace frame: 0x0, count: -17 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 __mp_release_all(ffffffff835d23d8) at __mp_release_all+0xd8 sys/kern/kern_lock.c:194 msleep(ffffffff834f9194,ffffffff834f9318,7f,ffffffff8301c389,0) at msleep+0x1ed uvm_pagezero_thread(ffff800029fd8518) at uvm_pagezero_thread+0xe9 sys/uvm/uvm_pmemrange.c:2194 end trace frame: 0x0, count: 9 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 __mp_release_all(ffffffff835d23d8) at __mp_release_all+0xd8 sys/kern/kern_lock.c:194 msleep(ffffffff834f9194,ffffffff834f9318,7f,ffffffff8301c389,0) at msleep+0x1ed uvm_pagezero_thread(ffff800029fd8518) at uvm_pagezero_thread+0xe9 sys/uvm/uvm_pmemrange.c:2194 end trace frame: 0x0, count: -6