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 *389270 1464 0 0x14000 0x200 0 reaper db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff8306da61) at panic+0x1e5 sys/kern/subr_prf.c:198 witness_checkorder(ffffffff835fc500,1,0) at witness_checkorder+0x1197 witness_debugger sys/kern/subr_witness.c:2518 [inline] witness_checkorder(ffffffff835fc500,1,0) at witness_checkorder+0x1197 sys/kern/subr_witness.c:780 rw_enter_read(ffffffff835fc4f0) at rw_enter_read+0xab sys/kern/kern_rwlock.c:112 uvmfault_lookup(ffff800029fe5800,0) at uvmfault_lookup+0x122 sys/uvm/uvm_fault.c:1785 uvm_fault_check(ffff800029fe5800,ffff800029fe5838,ffff800029fe5860) at uvm_fault_check+0x47 sys/uvm/uvm_fault.c:672 uvm_fault(ffffffff835fc410,7f82b5644000,0,2) at uvm_fault+0x112 sys/uvm/uvm_fault.c:600 kpageflttrap(ffff800029fe59a0,7f82b5644cf0) at kpageflttrap+0x2d0 sys/arch/amd64/amd64/trap.c:279 kerntrap(ffff800029fe59a0) at kerntrap+0x14a sys/arch/amd64/amd64/trap.c:332 alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b pmap_page_remove(fffffd8008ac0c40) at pmap_page_remove+0x45d _atomic_swap_64 machine/atomic.h:117 [inline] pmap_page_remove(fffffd8008ac0c40) at pmap_page_remove+0x45d sys/arch/amd64/amd64/pmap.c:2005 uvm_anfree_list(fffffd805f470870,0) at uvm_anfree_list+0xd6 amap_wipeout(fffffd806a2cc0b0) at amap_wipeout+0x248 sys/uvm/uvm_amap.c:502 uvm_unmap_detach(ffff800029fe5bd0,0) at uvm_unmap_detach+0x8a sys/uvm/uvm_map.c:1353 end trace frame: 0xffff800029fe5c10, 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(ffffffff8306da61) at panic+0x1e5 sys/kern/subr_prf.c:198 witness_checkorder(ffffffff835fc500,1,0) at witness_checkorder+0x1197 witness_debugger sys/kern/subr_witness.c:2518 [inline] witness_checkorder(ffffffff835fc500,1,0) at witness_checkorder+0x1197 sys/kern/subr_witness.c:780 rw_enter_read(ffffffff835fc4f0) at rw_enter_read+0xab sys/kern/kern_rwlock.c:112 uvmfault_lookup(ffff800029fe5800,0) at uvmfault_lookup+0x122 sys/uvm/uvm_fault.c:1785 uvm_fault_check(ffff800029fe5800,ffff800029fe5838,ffff800029fe5860) at uvm_fault_check+0x47 sys/uvm/uvm_fault.c:672 uvm_fault(ffffffff835fc410,7f82b5644000,0,2) at uvm_fault+0x112 sys/uvm/uvm_fault.c:600 kpageflttrap(ffff800029fe59a0,7f82b5644cf0) at kpageflttrap+0x2d0 sys/arch/amd64/amd64/trap.c:279 kerntrap(ffff800029fe59a0) at kerntrap+0x14a sys/arch/amd64/amd64/trap.c:332 alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b pmap_page_remove(fffffd8008ac0c40) at pmap_page_remove+0x45d _atomic_swap_64 machine/atomic.h:117 [inline] pmap_page_remove(fffffd8008ac0c40) at pmap_page_remove+0x45d sys/arch/amd64/amd64/pmap.c:2005 uvm_anfree_list(fffffd805f470870,0) at uvm_anfree_list+0xd6 amap_wipeout(fffffd806a2cc0b0) at amap_wipeout+0x248 sys/uvm/uvm_amap.c:502 uvm_unmap_detach(ffff800029fe5bd0,0) at uvm_unmap_detach+0x8a sys/uvm/uvm_map.c:1353 uvm_map_teardown(fffffd8066b941c8) at uvm_map_teardown+0x35e sys/uvm/uvm_map.c:2518 uvmspace_free(fffffd8066b941c8) at uvmspace_free+0xcd sys/uvm/uvm_map.c:3422 reaper(ffff800029fd9448) at reaper+0x256 sys/kern/kern_exit.c:483 end trace frame: 0x0, count: -17 ddb{0}> show registers rdi 0 rsi 0x1 rbp 0xffff800029fe5460 rbx 0xffffffff83473d87 cpu_info_full_primary+0x2d87 rdx 0 rcx 0xffff800029fd9448 rax 0xffffffff83472ff0 cpu_info_full_primary+0x1ff0 r8 0x101010101010101 r9 0x8080808080808080 r10 0xe96e6345c98b7028 r11 0x9fcc73207dce87cd r12 0xffffffff83473b88 cpu_info_full_primary+0x2b88 r13 0 r14 0 r15 0x1 rip 0xffffffff81877405 db_enter+0x25 cs 0x8 rflags 0x246 rsp 0xffff800029fe5450 ss 0x10 db_enter+0x25: addq $0x8,%rsp ddb{0}> show proc PROC (reaper) tid=389270 pid=1464 tcnt=1 stat=onproc flags process=14000 proc=200 runpri=86, usrpri=86, slppri=4, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff800029fd9958,0xffff800029fd91d0 process=0xffff800029feb668 user=0xffff800029fe0000, vmspace=0xffffffff835fc410 estcpu=36, cpticks=37, pctcpu=22.15, user=0, sys=11974, intr=80 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 92381 161490 36099 0 3 0x8000082 wait syz-executor 99204 183677 36099 0 3 0x8000082 wait syz-executor 46478 499562 36099 0 3 0x8000082 wait syz-executor 67050 391618 36099 0 3 0x8000082 wait syz-executor 13379 144741 36099 0 3 0x8000082 wait syz-executor 10118 228261 36099 0 3 0x8000082 wait syz-executor 17545 47768 36099 0 3 0x8000082 wait syz-executor 84109 54728 1 0 3 0x18100083 ttyopn getty 19887 508591 0 0 3 0x14200 bored sosplice 36099 139467 86166 0 3 0x8000082 wait syz-executor 86166 90774 97156 0 3 0x810008a sigsusp ksh 97156 34587 59972 0 3 0x18000098 kqread sshd-session 59972 440140 25241 0 3 0x18000092 kqread sshd-session 25241 141790 1 0 3 0x18000088 kqread sshd 32650 288501 37 74 3 0x19100092 bpf pflogd 37 190579 1 0 3 0x18000080 sbwait pflogd 62795 354382 7167 73 3 0x19100010 biowait syslogd 7167 292470 1 0 3 0x18100082 sbwait syslogd 89085 302912 1 0 3 0x18100080 kqread resolvd 96868 423055 79395 77 3 0x18100092 kqread dhcpleased 24984 136085 79395 77 3 0x18100092 kqread dhcpleased 79395 29667 1 0 3 0x18000080 kqread dhcpleased 97942 138927 0 0 3 0x14200 bored smr 17577 265552 0 0 2 0x14200 zerothread 56897 84579 0 0 3 0x14200 aiodoned aiodoned 90521 354506 0 0 3 0x14200 syncer update 60242 520273 0 0 3 0x14200 cleaner cleaner * 1464 389270 0 0 7 0x14200 reaper 39819 295965 0 0 3 0x14200 pgdaemon pagedaemon 75632 96564 0 0 3 0x14200 bored viomb 58895 15837 0 0 3 0x40014200 acpi0 acpi0 23014 493197 0 0 7 0x40014200 idle1 19124 177407 0 0 3 0x14200 bored softnet3 66601 162895 0 0 3 0x14200 bored softnet2 75548 3624 0 0 3 0x14200 bored softnet1 76408 85956 0 0 3 0x14200 bored softnet0 24220 194763 0 0 3 0x14200 bored systqmp 4377 421994 0 0 3 0x14200 bored systq 56973 78858 0 0 3 0x14200 tmoslp softclockmp 968 470563 0 0 2 0x40014200 softclock 47134 61085 0 0 3 0x40014200 idle0 1 469366 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 (0xfffffd806bf3a5f0) #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:483 #10 proc_trampoline+0x10 Process 62795 (syslogd) thread 0xffff8000ffffd960 (354382) exclusive rrwlock inode r = 0 (0xfffffd806e4962c0) #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 1464 (reaper) thread 0xffff800029fd9448 (389270) exclusive rwlock amaplk r = 0 (0xfffffd80566a3168) #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:483 #6 proc_trampoline+0x10 exclusive mutex &pmap->pm_mtx r = 0 (0xfffffd806bf3a5f0) #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:483 #10 proc_trampoline+0x10 ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10223 10182K 10702K 166960K 13621 0 pcb 17 18K 20K 166960K 381 0 rtable 193 14K 15K 166960K 2197 0 pf 35 17K 22K 166960K 241 0 ifaddr 39 7K 8K 166960K 304 0 ifgroup 55 2K 2K 166960K 363 0 sysctl 3 0K 0K 166960K 7 0 counters 64 36K 37K 166960K 218 0 ioctlops 0 0K 4K 166960K 1844 0 iov 0 0K 28K 166960K 87 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1507 95K 95K 166960K 3686 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 9K 166960K 25 0 VM map 2 1K 1K 166960K 2 0 sem 12 1K 1K 166960K 108 0 dirhash 12 2K 2K 166960K 45 0 ACPI 1697 195K 286K 166960K 12548 0 file desc 9 29K 93K 166960K 2165 0 sigio 0 0K 0K 166960K 34 0 proc 70 91K 140K 166960K 2250 0 subproc 91 5K 7K 166960K 846 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 212 0 in_multi 84 6K 7K 166960K 766 0 ether_multi 1 0K 0K 166960K 18 0 mrt 1 0K 0K 166960K 5 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 1286 0 pfkey data 0 0K 0K 166960K 1 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 231 72K 92K 166960K 18901 0 UVM aobj 72 8K 8K 166960K 76 0 pinsyscall 34 68K 106K 166960K 4720 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 105 0 NDP 12 0K 2K 166960K 219 0 temp 75 6824K 6943K 166960K 77855 0 kqueue 13 20K 28K 166960K 218 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 120 344 0 341 4 3 1 4 0 8 0 rtentry 112 776 0 692 4 1 3 4 0 8 0 unpcb 144 1452 0 1435 20 19 1 6 0 8 0 syncache 336 6 0 6 4 4 0 1 0 8 0 tcpqe 32 3 0 3 2 2 0 1 0 8 0 tcpcb 808 656 0 650 24 22 2 8 0 8 0 arp 120 139 0 123 1 0 1 1 0 8 0 inpcb 336 2844 0 2835 45 41 4 13 0 8 2 nd6 136 206 0 186 1 0 1 1 0 8 0 pkpcb 40 10 0 10 5 5 0 1 0 8 0 kcovpl 48 65 0 58 1 0 1 1 0 8 0 ppxss 1168 7 0 7 4 4 0 1 0 8 0 pffrag 232 17 0 11 1 0 1 1 0 482 0 pffrnode 88 17 0 11 1 0 1 1 0 8 0 pffrent 40 23 0 17 1 0 1 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 1 0 1 1 1 0 1 0 8 0 pfstitem 24 17 0 15 1 0 1 1 0 8 0 pfstkey 128 17 0 15 1 0 1 1 0 8 0 pfstate 376 17 0 15 2 1 1 2 0 8 0 pfrule 1344 30 0 23 2 1 1 2 0 8 0 art_heap8 4096 2 0 0 2 0 2 2 0 8 0 art_heap4 256 3085 0 2698 35 8 27 30 0 8 0 art_table 32 3087 0 2698 4 0 4 4 0 8 0 art_node 16 772 0 696 1 0 1 1 0 8 0 sysvmsgpl 40 6 0 5 3 2 1 1 0 8 0 semupl 112 2 0 2 1 1 0 1 0 8 0 semapl 112 105 0 95 1 0 1 1 0 8 0 shmpl 112 73 0 4 2 0 2 2 0 8 0 dirhash 1024 39 0 22 3 0 3 3 0 8 0 dino2pl 256 4147 0 2533 101 0 101 101 0 8 0 ffsino 272 4147 0 2533 108 0 108 108 0 8 0 nchpl 144 6244 0 5600 65 38 27 65 0 8 0 uvmvnodes 80 5995 0 0 123 0 123 123 0 8 0 vnodes 216 5995 0 0 334 0 334 334 0 8 0 namei 1024 28906 0 28906 6 5 1 1 0 8 1 percpumem 16 123 0 77 1 0 1 1 0 8 0 vcpupl 3904 2 0 0 1 0 1 1 0 8 0 vmpool 696 4 0 2 2 1 1 1 0 8 0 kstatmem 264 178 0 154 4 2 2 3 0 8 0 scsiplug 72 2 0 2 2 2 0 1 0 8 0 scxspl 216 44212 0 44211 16 14 2 8 1 8 1 plimitpl 152 658 0 640 1 0 1 1 0 8 0 sigapl 424 2372 0 2322 9 2 7 9 0 8 0 futexpl 64 21431 0 21431 6 5 1 1 0 8 1 knotepl 120 655 0 0 17 0 17 17 0 8 0 kqueuepl 216 580 0 571 12 11 1 5 0 8 0 pipepl 320 470 0 443 7 4 3 6 0 8 0 fdescpl 496 2332 0 2309 6 1 5 5 0 8 0 filepl 152 16767 0 16545 48 36 12 21 0 8 1 lockfpl 104 921 0 919 5 4 1 4 0 8 0 lockfspl 48 198 0 196 1 0 1 1 0 8 0 sessionpl 144 80 0 71 1 0 1 1 0 8 0 pgrppl 48 171 0 154 1 0 1 1 0 8 0 ucredpl 104 2531 0 2517 1 0 1 1 0 8 0 zombiepl 144 2330 0 2322 1 0 1 1 0 8 0 processpl 1160 2372 0 2322 6 1 5 6 0 8 0 procpl 648 4555 0 4497 8 1 7 8 0 8 0 srpgc 96 10 0 10 4 4 0 1 0 8 0 sosppl 168 9 0 9 4 4 0 1 0 8 0 sockpl 664 4666 0 4637 66 60 6 20 0 8 2 mcl64k 65536 4 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 1 0 0 1 0 1 1 0 8 0 mcl8k 8192 6 0 0 1 0 1 1 0 8 0 mcl4k 4096 3 0 0 1 0 1 1 0 8 0 mcl2k 2048 249 0 0 30 1 29 30 0 8 0 mtagpl 96 39 0 0 1 0 1 1 0 8 0 mbufpl 256 5272 0 0 326 0 326 326 0 8 0 bufpl 280 10055 0 2928 510 0 510 510 0 8 0 anonpl 24 373843 0 370325 77 25 52 52 0 185 19 amapchunkpl 152 62197 0 61723 47 15 32 33 0 158 9 amappl16 200 6486 0 6463 32 30 2 14 0 8 0 amappl15 192 48 0 48 1 1 0 1 0 8 0 amappl14 184 235 0 223 1 0 1 1 0 8 0 amappl13 176 10 0 10 1 1 0 1 0 8 0 amappl12 168 3887 0 3857 3 1 2 2 0 8 0 amappl11 160 55 0 41 1 0 1 1 0 8 0 amappl10 152 46 0 46 1 1 0 1 0 8 0 amappl9 144 119 0 119 1 1 0 1 0 8 0 amappl8 136 22 0 20 1 0 1 1 0 8 0 amappl7 128 229 0 217 1 0 1 1 0 8 0 amappl6 120 752 0 750 1 0 1 1 0 8 0 amappl5 112 445 0 434 1 0 1 1 0 8 0 amappl4 104 488 0 468 1 0 1 1 0 8 0 amappl3 96 11941 0 11829 4 0 4 4 0 8 0 amappl2 88 1422 0 1358 2 0 2 2 0 8 0 amappl1 80 17263 0 16680 14 1 13 14 0 8 0 amappl 88 18019 0 17852 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 1 0 1 0 8 0 dma256 256 7 0 7 2 2 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 75 0 4 2 0 2 2 0 8 0 uaddrrnd 24 2336 0 2304 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 2336 0 2304 1 0 1 1 0 8 0 vmmpekpl 168 20609 0 20554 3 0 3 3 0 8 0 vmmpepl 168 147650 0 145794 107 21 86 96 0 357 0 vmsppl 440 2335 0 2303 7 2 5 5 0 8 0 rwobjpl 56 48329 0 41321 100 0 100 100 0 8 0 pdppl 4096 4679 0 4608 187 114 73 85 0 8 2 pvpl 32 29283 0 0 236 1 235 235 0 265 0 pmappl 248 2335 0 2303 3 0 3 3 0 8 0 extentpl 40 56 0 38 1 0 1 1 0 8 0 phpool 112 884 0 203 21 0 21 21 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(ffffffff8306da61) at panic+0x1e5 sys/kern/subr_prf.c:198 witness_checkorder(ffffffff835fc500,1,0) at witness_checkorder+0x1197 witness_debugger sys/kern/subr_witness.c:2518 [inline] witness_checkorder(ffffffff835fc500,1,0) at witness_checkorder+0x1197 sys/kern/subr_witness.c:780 rw_enter_read(ffffffff835fc4f0) at rw_enter_read+0xab sys/kern/kern_rwlock.c:112 uvmfault_lookup(ffff800029fe5800,0) at uvmfault_lookup+0x122 sys/uvm/uvm_fault.c:1785 uvm_fault_check(ffff800029fe5800,ffff800029fe5838,ffff800029fe5860) at uvm_fault_check+0x47 sys/uvm/uvm_fault.c:672 uvm_fault(ffffffff835fc410,7f82b5644000,0,2) at uvm_fault+0x112 sys/uvm/uvm_fault.c:600 kpageflttrap(ffff800029fe59a0,7f82b5644cf0) at kpageflttrap+0x2d0 sys/arch/amd64/amd64/trap.c:279 kerntrap(ffff800029fe59a0) at kerntrap+0x14a sys/arch/amd64/amd64/trap.c:332 alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b pmap_page_remove(fffffd8008ac0c40) at pmap_page_remove+0x45d _atomic_swap_64 machine/atomic.h:117 [inline] pmap_page_remove(fffffd8008ac0c40) at pmap_page_remove+0x45d sys/arch/amd64/amd64/pmap.c:2005 uvm_anfree_list(fffffd805f470870,0) at uvm_anfree_list+0xd6 amap_wipeout(fffffd806a2cc0b0) at amap_wipeout+0x248 sys/uvm/uvm_amap.c:502 uvm_unmap_detach(ffff800029fe5bd0,0) at uvm_unmap_detach+0x8a sys/uvm/uvm_map.c:1353 uvm_map_teardown(fffffd8066b941c8) at uvm_map_teardown+0x35e sys/uvm/uvm_map.c:2518 uvmspace_free(fffffd8066b941c8) at uvmspace_free+0xcd sys/uvm/uvm_map.c:3422 reaper(ffff800029fd9448) at reaper+0x256 sys/kern/kern_exit.c:483 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 acpicpu_idle() at acpicpu_idle+0x41e sys/dev/acpi/acpicpu.c:1219 sched_idle(ffff800029b7bff0) at sched_idle+0x558 sys/kern/kern_sched.c:182 end trace frame: 0x0, count: 10 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 acpicpu_idle() at acpicpu_idle+0x41e sys/dev/acpi/acpicpu.c:1219 sched_idle(ffff800029b7bff0) at sched_idle+0x558 sys/kern/kern_sched.c:182 end trace frame: 0x0, count: -5