uvm_fault(0xfffffd8058e38010, 0x7f845ced7c30, 0, 2) -> e kernel: page fault trap, code=2 Stopped at pmap_page_remove+0x45d: xchgq %rax,0(%r14,%rcx,1) TID PID UID PRFLAGS PFLAGS CPU COMMAND *341171 4286 0 0x8000002 0 1 ifconfig 77480 86932 73 0x19100010 0 0K syslogd pmap_page_remove(fffffd800864cce0) at pmap_page_remove+0x45d _atomic_swap_64 machine/atomic.h:117 [inline] pmap_page_remove(fffffd800864cce0) at pmap_page_remove+0x45d sys/arch/amd64/amd64/pmap.c:2005 uvm_anfree_list(fffffd8063e085b8,0) at uvm_anfree_list+0xd6 amap_wipeout(fffffd80614a1ed8) at amap_wipeout+0x248 sys/uvm/uvm_amap.c:502 uvm_unmap_detach(ffff80002a0b2150,0) at uvm_unmap_detach+0x8a sys/uvm/uvm_map.c:1353 sys_munmap(ffff80002a107218,ffff80002a0b2290,ffff80002a0b21e0) at sys_munmap+0x32f sys/uvm/uvm_mmap.c:539 syscall(ffff80002a0b2290) at syscall+0xbb6 mi_syscall sys/sys/syscall_mi.h:179 [inline] syscall(ffff80002a0b2290) at syscall+0xbb6 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7a0ecc81bd50, count: 8 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: uvm_fault(0xfffffd8058e38010, 0x7f845ced7c30, 0, 2) -> e ddb{1}> trace pmap_page_remove(fffffd800864cce0) at pmap_page_remove+0x45d _atomic_swap_64 machine/atomic.h:117 [inline] pmap_page_remove(fffffd800864cce0) at pmap_page_remove+0x45d sys/arch/amd64/amd64/pmap.c:2005 uvm_anfree_list(fffffd8063e085b8,0) at uvm_anfree_list+0xd6 amap_wipeout(fffffd80614a1ed8) at amap_wipeout+0x248 sys/uvm/uvm_amap.c:502 uvm_unmap_detach(ffff80002a0b2150,0) at uvm_unmap_detach+0x8a sys/uvm/uvm_map.c:1353 sys_munmap(ffff80002a107218,ffff80002a0b2290,ffff80002a0b21e0) at sys_munmap+0x32f sys/uvm/uvm_mmap.c:539 syscall(ffff80002a0b2290) at syscall+0xbb6 mi_syscall sys/sys/syscall_mi.h:179 [inline] syscall(ffff80002a0b2290) at syscall+0xbb6 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7a0ecc81bd50, count: -7 ddb{1}> show registers rdi 0 rsi 0 rbp 0xffff80002a0b2040 rbx 0xfffffd80631c7ac0 rdx 0 rcx 0x7f8000000000 rax 0 r8 0 r9 0xffff80002a0b1f98 r10 0xf594c15aaccbf041 r11 0x913592a2080183af r12 0 r13 0x8000000070a95001 r14 0x45ced7c30 r15 0xfffffd800864cd48 rip 0xffffffff824ce96d pmap_page_remove+0x45d cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff80002a0b1fc0 ss 0x10 pmap_page_remove+0x45d: xchgq %rax,0(%r14,%rcx,1) ddb{1}> show proc PROC (ifconfig) tid=341171 pid=4286 tcnt=1 stat=onproc flags process=8000002 proc=0 runpri=86, usrpri=86, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff80002a106a80,0xffffffff835e9bf0 process=0xffff8000361a8020 user=0xffff80002a0ad000, vmspace=0xfffffd8058e38010 estcpu=36, cpticks=2, pctcpu=0.0, user=0, sys=2, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND * 4286 341171 72459 0 7 0x8000002 ifconfig 72459 219535 41446 0 3 0x810008a sigsusp sh 56800 119646 41656 0 3 0x8000002 clonelk ifconfig 41656 178816 37918 0 3 0x810008a sigsusp sh 37918 191953 93109 0 3 0x8000082 wait syz-executor 41446 451229 93109 0 3 0x8000082 wait syz-executor 20808 417472 93109 0 3 0x8000082 piperd syz-executor 58913 223790 93109 0 3 0x8000082 piperd syz-executor 2101 517122 93109 0 3 0x8000082 piperd syz-executor 28064 403311 93109 0 3 0x8000082 piperd syz-executor 28605 384631 93109 0 3 0x8000082 piperd syz-executor 19937 420441 1 0 3 0x18100083 ttyin getty 99971 309942 0 0 3 0x14280 nfsidl nfsio 46802 67345 0 0 3 0x14280 nfsidl nfsio 865 259264 0 0 3 0x14280 nfsidl nfsio 77027 103052 0 0 3 0x14280 nfsidl nfsio 17979 15311 0 0 3 0x14280 nfsidl nfsio 99508 160766 0 0 3 0x14280 nfsidl nfsio 18997 452422 0 0 3 0x14280 nfsidl nfsio 22330 277823 0 0 3 0x14280 nfsidl nfsio 62983 44894 0 0 3 0x14280 nfsidl nfsio 60374 329627 0 0 3 0x14280 nfsidl nfsio 80019 444469 0 0 3 0x14280 nfsidl nfsio 47081 419101 0 0 3 0x14280 nfsidl nfsio 74491 363601 0 0 3 0x14280 nfsidl nfsio 58668 155754 0 0 3 0x14280 nfsidl nfsio 52885 508936 0 0 3 0x14280 nfsidl nfsio 7237 244076 0 0 3 0x14280 nfsidl nfsio 5249 296188 0 0 3 0x14280 nfsidl nfsio 75229 157317 0 0 3 0x14280 nfsidl nfsio 17973 210943 0 0 3 0x14280 nfsidl nfsio 21187 344506 0 0 3 0x14280 nfsidl nfsio 8131 125171 0 0 3 0x14200 bored sosplice 93109 361607 70393 0 3 0x8000082 wait syz-executor 70393 281051 71818 0 3 0x810008a sigsusp ksh 71818 391967 13378 0 3 0x18000098 kqread sshd-session 13378 345825 24859 0 3 0x18000092 kqread sshd-session 24859 109219 1 0 3 0x18000088 kqread sshd 41085 175585 87547 74 3 0x19100092 bpf pflogd 87547 424322 1 0 3 0x18000080 sbwait pflogd 86932 77480 3763 73 7 0x19100010 syslogd 3763 147123 1 0 3 0x18100082 sbwait syslogd 68843 390692 1 0 3 0x18100080 kqread resolvd 23188 137593 67382 77 3 0x18100092 kqread dhcpleased 92170 474672 67382 77 3 0x18100092 kqread dhcpleased 67382 401072 1 0 3 0x18000080 kqread dhcpleased 85239 377174 0 0 3 0x14200 bored smr 46472 154604 0 0 3 0x14200 pgzero zerothread 21950 439467 0 0 3 0x14200 aiodoned aiodoned 69015 1739 0 0 3 0x14200 syncer update 41498 264618 0 0 3 0x14200 cleaner cleaner 2092 503559 0 0 3 0x14200 reaper reaper 28000 519343 0 0 3 0x14200 pgdaemon pagedaemon 3058 275050 0 0 3 0x14200 bored viomb 21926 454959 0 0 3 0x40014200 acpi0 acpi0 55358 504767 0 0 3 0x40014200 idle1 48511 196164 0 0 3 0x14200 bored softnet3 75002 317584 0 0 3 0x14200 bored softnet2 28400 163203 0 0 3 0x14200 bored softnet1 46404 189899 0 0 3 0x14200 bored softnet0 694 118062 0 0 3 0x14200 bored systqmp 11469 45258 0 0 3 0x14200 bored systq 68921 279497 0 0 3 0x14200 tmoslp softclockmp 45649 310709 0 0 3 0x40014200 tmoslp softclock 97339 288193 0 0 3 0x40014200 idle0 1 78832 0 0 3 0x8080082 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{1}> show all locks CPU 1: exclusive mutex &pmap->pm_mtx r = 0 (0xfffffd806e0593f8) #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 sys_munmap+0x32f sys/uvm/uvm_mmap.c:539 #8 syscall+0xbb6 mi_syscall sys/sys/syscall_mi.h:179 [inline] #8 syscall+0xbb6 sys/arch/amd64/amd64/trap.c:577 #9 Xsyscall+0x128 Process 4286 (ifconfig) thread 0xffff80002a107218 (341171) Process 86932 (syslogd) thread 0xffff8000ffffdbe8 (77480) ddb{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10236 10187K 10777K 166960K 17457 0 pcb 17 14K 16K 166960K 830 0 rtable 221 20K 22K 166960K 7790 0 pf 50 20K 29K 166960K 771 0 ifaddr 43 10K 11K 166960K 1024 0 ifgroup 72 3K 3K 166960K 1099 0 sysctl 3 0K 0K 166960K 9 0 counters 72 37K 38K 166960K 602 0 ioctlops 0 0K 4K 166960K 2267 0 iov 0 0K 24K 166960K 292 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1533 96K 97K 166960K 8652 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 9K 166960K 61 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 0K 166960K 542 0 dirhash 15 2K 3K 166960K 96 0 ACPI 1697 195K 286K 166960K 12548 0 file desc 14 49K 93K 166960K 6255 0 sigio 0 0K 0K 166960K 210 0 proc 85 116K 140K 166960K 7259 0 subproc 104 6K 7K 166960K 3124 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 494 0 in_multi 82 6K 7K 166960K 2712 0 ether_multi 1 0K 0K 166960K 34 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 247 1102K 1102K 166960K 247 0 exec 0 0K 1K 166960K 4201 0 pfkey data 0 0K 0K 166960K 4 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 199 96K 116K 166960K 46958 0 UVM aobj 46 4K 4K 166960K 47 0 pinsyscall 39 78K 107K 166960K 13348 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 1K 166960K 186 0 NDP 22 1K 2K 166960K 758 0 temp 83 6820K 6948K 166960K 216859 0 kqueue 13 20K 30K 166960K 518 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 120 814 0 811 2 1 1 2 0 8 0 rtentry 112 2770 0 2688 5 2 3 4 0 8 0 unpcb 144 3985 0 3968 39 38 1 6 0 8 0 syncache 336 16 0 16 12 12 0 1 0 8 0 tcpqe 32 4 36 4 2 2 0 1 0 8 0 tcpcb 808 1913 0 1905 76 74 2 8 0 8 0 arp 120 504 0 489 1 0 1 1 0 8 0 inpcb 336 6428 0 6415 104 101 3 13 0 8 0 nd6 136 757 0 739 1 0 1 1 0 8 0 pkpcb 40 15 0 15 8 8 0 1 0 8 0 kcovpl 48 240 0 232 1 0 1 1 0 8 0 ppxss 1168 20 0 20 10 10 0 1 0 8 0 pfstscr 40 10 0 10 5 5 0 1 0 8 0 pffrag 232 25 0 25 2 2 0 1 0 482 0 pffrnode 88 25 0 25 2 2 0 1 0 8 0 pffrent 40 78 0 78 2 2 0 1 0 8 0 pfosfp 40 1462 0 1038 5 0 5 5 0 8 0 pfosfpen 112 1462 0 746 21 0 21 21 0 8 0 pfrktable 1344 46 0 36 2 1 1 2 0 8 0 pfanchor 1288 18 0 5 3 1 2 2 0 8 0 pftag 88 6 0 2 1 0 1 1 0 8 0 pfstitem 24 478 0 448 1 0 1 1 0 8 0 pfstkey 128 492 0 462 3 0 3 3 0 8 0 pfstate 376 484 0 457 10 2 8 8 0 8 1 pfrule 1344 78 0 58 4 2 2 2 0 8 0 art_heap8 4096 2 0 0 2 0 2 2 0 8 0 art_heap4 256 10858 0 10466 60 30 30 31 0 8 2 art_table 32 10860 0 10466 4 0 4 4 0 8 0 art_node 16 2758 0 2684 1 0 1 1 0 8 0 sysvmsgpl 40 13 0 9 1 0 1 1 0 8 0 semupl 112 1 0 1 1 1 0 1 0 8 0 semapl 112 540 0 530 1 0 1 1 0 8 0 shmpl 112 44 0 1 2 0 2 2 0 8 0 dirhash 1024 76 0 56 3 0 3 3 0 8 0 dino2pl 256 8178 0 6204 126 2 124 124 0 8 0 ffsino 272 8178 0 6204 133 1 132 132 0 8 0 nchpl 144 12804 0 11884 73 38 35 67 0 8 0 uvmvnodes 80 8298 0 0 170 0 170 170 0 8 0 vnodes 216 8298 0 0 461 0 461 461 0 8 0 namei 1024 74573 0 74573 16 15 1 2 0 8 1 percpumem 16 315 0 265 1 0 1 1 0 8 0 vcpupl 3904 18 0 2 2 0 2 2 0 8 0 vmpool 696 25 0 9 2 0 2 2 0 8 0 pfiaddrpl 120 16 0 4 1 0 1 1 0 8 0 kstatmem 264 562 0 530 7 4 3 3 0 8 0 scsiplug 72 10 0 10 9 9 0 1 0 8 0 scxspl 216 131353 0 131352 25 24 1 8 1 8 0 plimitpl 152 1632 0 1615 1 0 1 1 0 8 0 sigapl 424 6122 0 6055 12 3 9 9 0 8 0 futexpl 64 53208 0 53208 22 22 0 1 0 8 0 knotepl 120 939 0 0 18 0 18 18 0 8 0 kqueuepl 216 1254 0 1245 13 12 1 5 0 8 0 pipepl 320 1177 0 1150 6 3 3 6 0 8 0 fdescpl 496 6078 0 6050 11 6 5 5 0 8 0 filepl 152 41975 0 41736 109 95 14 22 0 8 1 lockfpl 104 1776 0 1774 2 1 1 2 0 8 0 lockfspl 48 510 0 508 1 0 1 1 0 8 0 sessionpl 144 261 0 252 1 0 1 1 0 8 0 pgrppl 48 549 0 532 1 0 1 1 0 8 0 ucredpl 104 7592 0 7577 1 0 1 1 0 8 0 zombiepl 144 6056 0 6055 2 1 1 1 0 8 0 processpl 1160 6122 0 6055 7 1 6 6 0 8 0 procpl 648 11147 0 11080 13 5 8 8 0 8 0 srpgc 96 46 0 46 13 13 0 1 0 8 0 sosppl 168 21 0 21 12 12 0 1 0 8 0 sockpl 664 11280 0 11247 128 123 5 16 0 8 0 mcl64k 65536 8 0 0 1 0 1 1 0 8 0 mcl16k 16384 4 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 9 0 0 2 0 2 2 0 8 0 mcl4k 4096 5 0 0 1 0 1 1 0 8 0 mcl2k 2048 424 0 0 28 3 25 28 0 8 0 mtagpl 96 10 0 0 1 0 1 1 0 8 0 mbufpl 256 1101 0 0 68 0 68 68 0 8 0 bufpl 280 18978 0 11617 593 16 577 593 0 8 0 anonpl 24 789629 0 786416 136 72 64 76 0 185 18 amapchunkpl 152 149081 0 148765 84 52 32 40 0 158 15 amappl16 200 10577 0 10564 123 109 14 19 0 8 9 amappl15 192 15 0 15 2 2 0 1 0 8 0 amappl14 184 580 0 568 1 0 1 1 0 8 0 amappl13 176 9 0 9 2 2 0 1 0 8 0 amappl12 168 10447 0 10419 3 1 2 2 0 8 0 amappl11 160 58 0 44 1 0 1 1 0 8 0 amappl10 152 10 0 10 2 2 0 1 0 8 0 amappl9 144 158 0 158 1 1 0 1 0 8 0 amappl8 136 20 0 17 1 0 1 1 0 8 0 amappl7 128 595 0 582 1 0 1 1 0 8 0 amappl6 120 2471 0 2465 1 0 1 1 0 8 0 amappl5 112 1068 0 1054 1 0 1 1 0 8 0 amappl4 104 1016 0 996 1 0 1 1 0 8 0 amappl3 96 28118 0 28037 8 4 4 4 0 8 0 amappl2 88 3891 0 3820 2 0 2 2 0 8 0 amappl1 80 40250 0 39670 25 11 14 14 0 8 1 amappl 88 44654 0 44532 7 2 5 5 0 92 0 dma4096 4096 1 0 1 1 1 0 1 0 8 0 dma1024 1024 2 0 1 1 0 1 1 0 8 0 dma512 512 1 0 1 1 1 0 1 0 8 0 dma256 256 8 0 8 3 3 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 20 0 19 1 0 1 1 0 8 0 aobjpl 72 46 0 1 1 0 1 1 0 8 0 uaddrrnd 24 6103 0 6059 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 6103 0 6059 1 0 1 1 0 8 0 vmmpekpl 168 50595 0 50539 6 2 4 4 0 8 0 vmmpepl 168 370919 0 369324 198 104 94 102 0 357 9 vmsppl 440 6102 0 6059 11 5 6 6 0 8 0 rwobjpl 56 107871 0 98606 149 12 137 137 0 8 2 pdppl 4096 12213 0 12134 424 341 83 92 0 8 4 pvpl 32 33006 0 0 266 1 265 265 0 265 0 pmappl 248 6102 0 6059 4 0 4 4 0 8 0 extentpl 40 56 0 38 1 0 1 1 0 8 0 phpool 112 1073 0 594 16 1 15 15 0 8 0 ddb{1}> machine ddbcpu 0 Stopped at x86_ipi_db+0x27: addq $0x8,%rsp x86_ipi_db(ffffffff834bbff0) 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_const_cmp4(0,0) at __sanitizer_cov_trace_const_cmp4+0x35 kd_curproc sys/dev/kcov.c:590 [inline] __sanitizer_cov_trace_const_cmp4(0,0) at __sanitizer_cov_trace_const_cmp4+0x35 sys/dev/kcov.c:235 witness_lock(ffffffff835113f0,8) at witness_lock+0x71 sys/kern/subr_witness.c:1104 __mp_acquire_count(ffffffff835111e8,1) at __mp_acquire_count+0x58 tsleep(fffffd806f4df468,11,ffffffff83080656,0) at tsleep+0x211 biowait(fffffd806f4df468) at biowait+0xc1 sys/kern/vfs_bio.c:1254 bwrite(fffffd806f4df468) at bwrite+0x2e2 sys/kern/vfs_bio.c:766 ffs_update(fffffd806e49e228,1) at ffs_update+0x34c sys/ufs/ffs/ffs_inode.c:111 VOP_FSYNC(fffffd806e256560,fffffd807f7d3618,1,ffff8000ffffdbe8) at VOP_FSYNC+0x108 sys/kern/vfs_vops.c:311 sys_fsync(ffff8000ffffdbe8,ffff80002a06aea0,ffff80002a06adf0) at sys_fsync+0x16f sys/kern/vfs_syscalls.c:2927 syscall(ffff80002a06aea0) at syscall+0xaf8 mi_syscall sys/sys/syscall_mi.h:179 [inline] syscall(ffff80002a06aea0) at syscall+0xaf8 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x75a58fccbe60, count: 1 ddb{0}> trace x86_ipi_db(ffffffff834bbff0) 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_const_cmp4(0,0) at __sanitizer_cov_trace_const_cmp4+0x35 kd_curproc sys/dev/kcov.c:590 [inline] __sanitizer_cov_trace_const_cmp4(0,0) at __sanitizer_cov_trace_const_cmp4+0x35 sys/dev/kcov.c:235 witness_lock(ffffffff835113f0,8) at witness_lock+0x71 sys/kern/subr_witness.c:1104 __mp_acquire_count(ffffffff835111e8,1) at __mp_acquire_count+0x58 tsleep(fffffd806f4df468,11,ffffffff83080656,0) at tsleep+0x211 biowait(fffffd806f4df468) at biowait+0xc1 sys/kern/vfs_bio.c:1254 bwrite(fffffd806f4df468) at bwrite+0x2e2 sys/kern/vfs_bio.c:766 ffs_update(fffffd806e49e228,1) at ffs_update+0x34c sys/ufs/ffs/ffs_inode.c:111 VOP_FSYNC(fffffd806e256560,fffffd807f7d3618,1,ffff8000ffffdbe8) at VOP_FSYNC+0x108 sys/kern/vfs_vops.c:311 sys_fsync(ffff8000ffffdbe8,ffff80002a06aea0,ffff80002a06adf0) at sys_fsync+0x16f sys/kern/vfs_syscalls.c:2927 syscall(ffff80002a06aea0) at syscall+0xaf8 mi_syscall sys/sys/syscall_mi.h:179 [inline] syscall(ffff80002a06aea0) at syscall+0xaf8 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x75a58fccbe60, count: -14 ddb{0}> machine ddbcpu 1 Stopped at pmap_page_remove+0x45d: xchgq %rax,0(%r14,%rcx,1) pmap_page_remove(fffffd800864cce0) at pmap_page_remove+0x45d _atomic_swap_64 machine/atomic.h:117 [inline] pmap_page_remove(fffffd800864cce0) at pmap_page_remove+0x45d sys/arch/amd64/amd64/pmap.c:2005 uvm_anfree_list(fffffd8063e085b8,0) at uvm_anfree_list+0xd6 amap_wipeout(fffffd80614a1ed8) at amap_wipeout+0x248 sys/uvm/uvm_amap.c:502 uvm_unmap_detach(ffff80002a0b2150,0) at uvm_unmap_detach+0x8a sys/uvm/uvm_map.c:1353 sys_munmap(ffff80002a107218,ffff80002a0b2290,ffff80002a0b21e0) at sys_munmap+0x32f sys/uvm/uvm_mmap.c:539 syscall(ffff80002a0b2290) at syscall+0xbb6 mi_syscall sys/sys/syscall_mi.h:179 [inline] syscall(ffff80002a0b2290) at syscall+0xbb6 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7a0ecc81bd50, count: 8 ddb{1}> trace pmap_page_remove(fffffd800864cce0) at pmap_page_remove+0x45d _atomic_swap_64 machine/atomic.h:117 [inline] pmap_page_remove(fffffd800864cce0) at pmap_page_remove+0x45d sys/arch/amd64/amd64/pmap.c:2005 uvm_anfree_list(fffffd8063e085b8,0) at uvm_anfree_list+0xd6 amap_wipeout(fffffd80614a1ed8) at amap_wipeout+0x248 sys/uvm/uvm_amap.c:502 uvm_unmap_detach(ffff80002a0b2150,0) at uvm_unmap_detach+0x8a sys/uvm/uvm_map.c:1353 sys_munmap(ffff80002a107218,ffff80002a0b2290,ffff80002a0b21e0) at sys_munmap+0x32f sys/uvm/uvm_mmap.c:539 syscall(ffff80002a0b2290) at syscall+0xbb6 mi_syscall sys/sys/syscall_mi.h:179 [inline] syscall(ffff80002a0b2290) at syscall+0xbb6 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7a0ecc81bd50, count: -7