uvm_fault(0xfffffd8065d24a60, 0x7f81cb669578, 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 39416 96695 0 0x8000000 0 0 syz-executor *299587 28684 0 0x8101004 0 1K sh pmap_page_remove(fffffd80085da460) at pmap_page_remove+0x45d _atomic_swap_64 machine/atomic.h:117 [inline] pmap_page_remove(fffffd80085da460) at pmap_page_remove+0x45d sys/arch/amd64/amd64/pmap.c:2005 uvm_anfree_list(fffffd8076690d20,0) at uvm_anfree_list+0xd6 amap_wipeout(fffffd806cfef0b8) at amap_wipeout+0x248 sys/uvm/uvm_amap.c:502 uvm_unmap_detach(ffff8000323a5468,0) at uvm_unmap_detach+0x8a sys/uvm/uvm_map.c:1353 uvmspace_exec(ffff8000371e8f60,1000,7f7fffffc000) at uvmspace_exec+0x44d sys/uvm/uvm_map.c:3388 sys_execve(ffff8000371e8f60,ffff8000323a5b00,ffff8000323a5a50) at sys_execve+0xadb sys/kern/kern_exec.c:448 syscall(ffff8000323a5b00) at syscall+0xaf8 mi_syscall sys/sys/syscall_mi.h:179 [inline] syscall(ffff8000323a5b00) at syscall+0xaf8 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x743cdbfd9900, count: 7 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(0xfffffd8065d24a60, 0x7f81cb669578, 0, 2) -> e ddb{1}> trace pmap_page_remove(fffffd80085da460) at pmap_page_remove+0x45d _atomic_swap_64 machine/atomic.h:117 [inline] pmap_page_remove(fffffd80085da460) at pmap_page_remove+0x45d sys/arch/amd64/amd64/pmap.c:2005 uvm_anfree_list(fffffd8076690d20,0) at uvm_anfree_list+0xd6 amap_wipeout(fffffd806cfef0b8) at amap_wipeout+0x248 sys/uvm/uvm_amap.c:502 uvm_unmap_detach(ffff8000323a5468,0) at uvm_unmap_detach+0x8a sys/uvm/uvm_map.c:1353 uvmspace_exec(ffff8000371e8f60,1000,7f7fffffc000) at uvmspace_exec+0x44d sys/uvm/uvm_map.c:3388 sys_execve(ffff8000371e8f60,ffff8000323a5b00,ffff8000323a5a50) at sys_execve+0xadb sys/kern/kern_exec.c:448 syscall(ffff8000323a5b00) at syscall+0xaf8 mi_syscall sys/sys/syscall_mi.h:179 [inline] syscall(ffff8000323a5b00) at syscall+0xaf8 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x743cdbfd9900, count: -8 ddb{1}> show registers rdi 0 rsi 0 rbp 0xffff8000323a5350 rbx 0xfffffd806390fa08 rdx 0 rcx 0x7f8000000000 rax 0 r8 0 r9 0 r10 0x949f537adad09d33 r11 0x8d701eeac282d7e9 r12 0 r13 0x800000006bd2e001 r14 0x1cb669578 r15 0xfffffd80085da4c8 rip 0xffffffff822a4abd pmap_page_remove+0x45d cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff8000323a52d0 ss 0x10 pmap_page_remove+0x45d: xchgq %rax,0(%r14,%rcx,1) ddb{1}> show proc PROC (sh) tid=299587 pid=28684 tcnt=1 stat=onproc flags process=8101004 proc=0 runpri=83, usrpri=83, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0xffff8000371e8f60 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff8000371e8a50,0xffff8000371e8ce8 process=0xffff8000371c1240 user=0xffff8000323a0000, vmspace=0xfffffd8065d24a60 estcpu=36, cpticks=1, pctcpu=0.0, user=0, sys=1, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 96695 39416 68370 0 7 0x8000000 syz-executor *28684 299587 95692 0 7 0x8101004 sh 95692 289290 92960 0 3 0x810008a sigsusp sh 77158 395906 70406 0 2 0x8000000 syz-executor 77158 508816 70406 0 3 0xc000080 fsleep syz-executor 89344 93994 58367 0 3 0x8000080 nanoslp syz-executor 89344 382880 58367 0 3 0xc000080 sbwait syz-executor 54704 310369 74349 0 2 0x8000000 syz-executor 54704 349472 74349 0 2 0xc000000 syz-executor 58131 185212 3492 0 2 0x8000000 syz-executor 58131 394398 3492 0 3 0xc000080 fsleep syz-executor 58131 56376 3492 0 3 0xc000080 fsleep syz-executor 69205 261630 5293 0 2 0x8000000 syz-executor 69205 517999 5293 0 3 0xc000080 fsleep syz-executor 71760 13959 97509 0 2 0x8000000 syz-executor 71760 406438 97509 0 3 0xc000080 fsleep syz-executor 92960 40955 30179 0 3 0x8000082 wait syz-executor 82515 270897 0 0 3 0x14200 acct acct 58367 274173 30179 0 3 0x8000082 nanoslp syz-executor 68370 493585 30179 0 3 0x8000082 nanoslp syz-executor 74349 154620 30179 0 3 0x8000082 nanoslp syz-executor 70406 388269 30179 0 3 0x8000082 nanoslp syz-executor 3492 270636 30179 0 3 0x8000082 nanoslp syz-executor 97509 194172 30179 0 3 0x8000082 nanoslp syz-executor 5293 509833 30179 0 3 0x8000082 nanoslp syz-executor 40675 122330 0 0 3 0x14200 bored sosplice 30179 208599 14216 0 3 0x8000082 kqread syz-executor 14216 427543 78108 0 3 0x810008a sigsusp ksh 78108 465415 99051 0 3 0x18000098 kqread sshd-session 99051 314340 43968 0 3 0x18000092 kqread sshd-session 4813 317375 1 0 3 0x18100083 ttyin getty 43968 521307 1 0 3 0x18000088 kqread sshd 11234 277658 8241 74 3 0x19100092 bpf pflogd 8241 434708 1 0 3 0x18000080 sbwait pflogd 76190 142138 63554 73 3 0x19100090 kqread syslogd 63554 435339 1 0 3 0x18100082 sbwait syslogd 49038 193163 1 0 3 0x18100080 kqread resolvd 88854 102750 86781 77 3 0x18100092 kqread dhcpleased 37933 444924 86781 77 3 0x18100092 kqread dhcpleased 86781 367815 1 0 3 0x18000080 kqread dhcpleased 46005 200120 0 0 3 0x14200 bored smr 58109 170118 0 0 2 0x14200 zerothread 71104 338661 0 0 3 0x14200 aiodoned aiodoned 83664 476041 0 0 3 0x14200 syncer update 83150 200694 0 0 3 0x14200 cleaner cleaner 21506 516463 0 0 3 0x14200 reaper reaper 60242 458063 0 0 3 0x14200 pgdaemon pagedaemon 47726 474573 0 0 3 0x14200 bored viomb 1994 408622 0 0 3 0x40014200 acpi0 acpi0 11468 429800 0 0 3 0x40014200 idle1 33677 374262 0 0 3 0x14200 bored softnet3 13227 179246 0 0 3 0x14200 bored softnet2 75125 226936 0 0 3 0x14200 bored softnet1 87138 471825 0 0 3 0x14200 bored softnet0 24213 362885 0 0 3 0x14200 bored systqmp 58235 467797 0 0 3 0x14200 bored systq 34595 325533 0 0 3 0x14200 tmoslp softclockmp 52452 260519 0 0 3 0x40014200 tmoslp softclock 62302 108372 0 0 3 0x40014200 idle0 1 290024 0 0 3 0x8000082 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{1}> show all locks CPU 1: exclusive mutex &pmap->pm_mtx r = 0 (0xfffffd806be77400) #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 uvmspace_exec+0x44d sys/uvm/uvm_map.c:3388 #8 sys_execve+0xadb sys/kern/kern_exec.c:448 #9 syscall+0xaf8 mi_syscall sys/sys/syscall_mi.h:179 [inline] #9 syscall+0xaf8 sys/arch/amd64/amd64/trap.c:577 #10 Xsyscall+0x128 Process 28684 (sh) thread 0xffff8000371e8f60 (299587) exclusive rwlock amaplk r = 0 (0xfffffd8056f09240) #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 uvmspace_exec+0x44d sys/uvm/uvm_map.c:3388 #4 sys_execve+0xadb sys/kern/kern_exec.c:448 #5 syscall+0xaf8 mi_syscall sys/sys/syscall_mi.h:179 [inline] #5 syscall+0xaf8 sys/arch/amd64/amd64/trap.c:577 #6 Xsyscall+0x128 exclusive kernel_lock &kernel_lock r = 0 (0xffffffff835fbf30) #0 witness_lock+0x5b8 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5b8 sys/kern/subr_witness.c:1151 #1 syscall+0xad6 mi_syscall sys/sys/syscall_mi.h:179 [inline] #1 syscall+0xad6 sys/arch/amd64/amd64/trap.c:577 #2 Xsyscall+0x128 exclusive mutex &pmap->pm_mtx r = 0 (0xfffffd806be77400) #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 uvmspace_exec+0x44d sys/uvm/uvm_map.c:3388 #8 sys_execve+0xadb sys/kern/kern_exec.c:448 #9 syscall+0xaf8 mi_syscall sys/sys/syscall_mi.h:179 [inline] #9 syscall+0xaf8 sys/arch/amd64/amd64/trap.c:577 #10 Xsyscall+0x128 Process 89344 (syz-executor) thread 0xffff8000371e96f8 (382880) exclusive rwlock sbufrcv r = 0 (0xffff800010fdc610) #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 sblock+0xb7 sys/kern/uipc_socket2.c:549 #3 soreceive+0x295 sys/kern/uipc_socket.c:947 #4 recvit+0x40a sys/kern/uipc_syscalls.c:1082 #5 sys_recvmmsg+0x3d3 sys/kern/uipc_syscalls.c:973 #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 ddb{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10232 10189K 10762K 166960K 14461 0 pcb 17 14K 16K 166960K 499 0 rtable 171 6K 10K 166960K 2958 0 pf 39 18K 23K 166960K 395 0 ifaddr 36 6K 8K 166960K 362 0 ifgroup 60 2K 2K 166960K 427 0 sysctl 4 1K 2K 166960K 9 0 counters 66 36K 37K 166960K 264 0 ioctlops 0 0K 4K 166960K 1842 0 iov 0 0K 26K 166960K 151 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1558 98K 98K 166960K 4522 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 9K 166960K 43 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 0K 166960K 96 0 dirhash 18 3K 3K 166960K 54 0 ACPI 1697 195K 286K 166960K 12548 0 file desc 19 69K 93K 166960K 2866 0 sigio 0 0K 0K 166960K 59 0 proc 70 91K 128K 166960K 2631 0 subproc 104 6K 7K 166960K 1001 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 297 0 in_multi 70 5K 7K 166960K 911 0 ether_multi 1 0K 0K 166960K 15 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 271 1208K 1208K 166960K 271 0 exec 1 0K 1K 166960K 1605 0 pfkey data 0 0K 0K 166960K 6 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 258 84K 100K 166960K 24934 0 UVM aobj 46 6K 6K 166960K 48 0 pinsyscall 45 90K 106K 166960K 5715 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 1K 166960K 83 0 NDP 13 0K 1K 166960K 266 0 temp 80 6824K 6920K 166960K 96714 0 kqueue 13 20K 30K 166960K 323 0 SYN cache 2 8K 16K 166960K 3 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 120 332 0 329 2 1 1 2 0 8 0 rtentry 112 1052 0 978 4 0 4 4 0 8 0 unpcb 144 2558 0 2538 25 24 1 6 0 8 0 syncache 336 5 0 5 3 3 0 1 0 8 0 tcpqe 32 1 0 1 1 1 0 1 0 8 0 tcpcb 808 871 0 867 27 25 2 11 0 8 1 arp 120 161 0 146 1 0 1 1 0 8 0 inpcb 336 3292 0 3281 38 36 2 15 0 8 0 nd6 136 264 0 244 2 1 1 2 0 8 0 pkpcb 40 13 0 13 4 4 0 1 0 8 0 kcovpl 48 77 0 69 1 0 1 1 0 8 0 ppxss 1168 15 0 15 6 6 0 1 0 8 0 pfstscr 40 2 0 2 1 1 0 1 0 8 0 pffrag 232 21 0 16 1 0 1 1 0 482 0 pffrnode 88 19 0 15 1 0 1 1 0 8 0 pffrent 40 111 0 106 1 0 1 1 0 8 0 pfosfp 40 1433 0 1430 6 5 1 5 0 8 0 pfosfpen 112 1433 0 1430 22 21 1 21 0 8 0 pfrktable 1344 34 0 34 4 4 0 1 0 8 0 pfanchor 1288 13 0 8 1 0 1 1 0 8 0 pftag 88 8 0 6 1 0 1 1 0 8 0 pfqueue 264 1 0 1 1 1 0 1 0 8 0 pfstitem 24 73 0 67 1 0 1 1 0 8 0 pfstkey 128 143 0 137 2 0 2 2 0 8 0 pfstate 376 106 0 102 5 2 3 5 0 8 0 pfrule 1344 45 0 37 2 1 1 2 0 8 0 art_heap8 4096 2 0 0 2 0 2 2 0 8 0 art_heap4 256 4180 0 3788 35 3 32 32 0 8 4 art_table 32 4182 0 3788 5 0 5 5 0 8 1 art_node 16 1047 0 980 1 0 1 1 0 8 0 sysvmsgpl 40 6 0 4 2 1 1 1 0 8 0 semupl 112 1 0 1 1 1 0 1 0 8 0 semapl 112 94 0 84 1 0 1 1 0 8 0 shmpl 112 45 0 2 2 0 2 2 0 8 0 dirhash 1024 46 0 25 3 0 3 3 0 8 0 dino2pl 256 5226 0 3595 103 0 103 103 0 8 0 ffsino 272 5226 0 3595 109 0 109 109 0 8 0 nchpl 144 7978 0 6187 67 0 67 67 0 8 0 uvmvnodes 80 7060 0 0 145 0 145 145 0 8 0 vnodes 216 7060 0 0 393 0 393 393 0 8 0 namei 1024 38910 0 38909 7 6 1 2 0 8 0 percpumem 16 146 0 99 1 0 1 1 0 8 0 vcpupl 3904 13 0 1 2 0 2 2 0 8 0 vmpool 696 17 0 5 5 3 2 2 0 8 0 pfiaddrpl 120 9 0 9 3 3 0 1 0 8 0 kstatmem 264 224 0 198 7 4 3 3 0 8 0 scsiplug 72 6 0 6 4 3 1 1 0 8 1 scxspl 216 54893 0 54893 16 14 2 8 1 8 2 plimitpl 152 708 0 690 1 0 1 1 0 8 0 sigapl 424 3049 0 2996 10 1 9 9 0 8 2 futexpl 64 33705 0 33700 7 6 1 1 0 8 0 knotepl 120 647 0 0 18 0 18 18 0 8 0 kqueuepl 216 738 0 728 11 10 1 5 0 8 0 pipepl 320 729 0 702 12 6 6 6 0 8 3 fdescpl 496 3008 0 2975 9 4 5 5 0 8 0 filepl 152 23350 0 23104 52 34 18 21 0 8 8 lockfpl 104 1104 0 1101 3 1 2 2 0 8 1 lockfspl 48 318 0 315 1 0 1 1 0 8 0 sessionpl 144 91 0 82 1 0 1 1 0 8 0 pgrppl 48 203 0 186 1 0 1 1 0 8 0 ucredpl 104 3941 0 3928 1 0 1 1 0 8 0 zombiepl 144 2996 0 2996 1 0 1 1 0 8 1 processpl 1160 3049 0 2996 7 1 6 6 0 8 1 procpl 648 6242 0 6182 11 3 8 9 0 8 2 srpgc 96 19 0 19 4 3 1 1 0 8 1 sosppl 168 10 0 10 4 3 1 1 0 8 1 sockpl 664 6281 0 6249 72 65 7 20 0 8 4 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 1 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 276 0 0 30 0 30 30 0 8 1 mtagpl 96 10 0 0 1 0 1 1 0 8 0 mbufpl 256 1066 0 0 60 0 60 60 0 8 0 bufpl 280 12709 0 5277 531 0 531 531 0 8 0 anonpl 24 423609 0 411157 102 26 76 76 0 185 0 amapchunkpl 152 79144 0 78282 50 16 34 37 0 158 0 amappl16 200 7923 0 7732 64 42 22 27 0 8 7 amappl15 192 24 0 24 2 2 0 1 0 8 0 amappl14 184 266 0 253 1 0 1 1 0 8 0 amappl13 176 6 0 6 1 1 0 1 0 8 0 amappl12 168 4739 0 4705 3 1 2 2 0 8 0 amappl11 160 53 0 39 1 0 1 1 0 8 0 amappl10 152 8 0 7 1 0 1 1 0 8 0 amappl9 144 137 0 137 1 1 0 1 0 8 0 amappl8 136 25 0 21 1 0 1 1 0 8 0 amappl7 128 240 0 228 1 0 1 1 0 8 0 amappl6 120 848 0 846 1 0 1 1 0 8 0 amappl5 112 405 0 392 1 0 1 1 0 8 0 amappl4 104 524 0 502 1 0 1 1 0 8 0 amappl3 96 15978 0 15852 4 0 4 4 0 8 0 amappl2 88 1585 0 1518 2 0 2 2 0 8 0 amappl1 80 20079 0 19492 15 2 13 14 0 8 0 amappl 88 23947 0 23761 6 0 6 6 0 92 1 dma4096 4096 2 0 2 2 2 0 1 0 8 0 dma1024 1024 2 0 1 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 47 0 2 1 0 1 1 0 8 0 uaddrrnd 24 3025 0 2980 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 3025 0 2980 1 0 1 1 0 8 0 vmmpekpl 168 26819 0 26764 4 0 4 4 0 8 0 vmmpepl 168 193313 0 191217 137 38 99 104 0 357 3 vmsppl 440 3024 0 2980 7 2 5 5 0 8 0 rwobjpl 56 58929 0 50684 125 6 119 120 0 8 1 pdppl 4096 6057 0 5972 178 93 85 87 0 8 0 pvpl 32 32626 0 0 262 0 262 262 0 265 0 pmappl 248 3024 0 2980 3 0 3 3 0 8 0 extentpl 40 56 0 38 1 0 1 1 0 8 0 phpool 112 609 0 175 13 0 13 13 0 8 0 ddb{1}> machine ddbcpu 0 Stopped at x86_ipi_db+0x27: addq $0x8,%rsp x86_ipi_db(ffffffff83415ff0) 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_lock(ffffffff835fbd28) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:113 [inline] __mp_lock(ffffffff835fbd28) at __mp_lock+0x192 sys/kern/kern_lock.c:144 intr_handler(ffff8000371e1730,ffff80000006c000) at intr_handler+0xe1 sys/arch/amd64/amd64/intr.c:553 Xintr_ioapic_edge25_untramp() at Xintr_ioapic_edge25_untramp+0x18f __mp_lock(ffffffff835fbd28) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:113 [inline] __mp_lock(ffffffff835fbd28) at __mp_lock+0x192 sys/kern/kern_lock.c:144 syscall(ffff8000371e1900) at syscall+0xad6 mi_syscall sys/sys/syscall_mi.h:179 [inline] syscall(ffff8000371e1900) at syscall+0xad6 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x77afb61b2b60, count: 6 ddb{0}> trace x86_ipi_db(ffffffff83415ff0) 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_lock(ffffffff835fbd28) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:113 [inline] __mp_lock(ffffffff835fbd28) at __mp_lock+0x192 sys/kern/kern_lock.c:144 intr_handler(ffff8000371e1730,ffff80000006c000) at intr_handler+0xe1 sys/arch/amd64/amd64/intr.c:553 Xintr_ioapic_edge25_untramp() at Xintr_ioapic_edge25_untramp+0x18f __mp_lock(ffffffff835fbd28) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:113 [inline] __mp_lock(ffffffff835fbd28) at __mp_lock+0x192 sys/kern/kern_lock.c:144 syscall(ffff8000371e1900) at syscall+0xad6 mi_syscall sys/sys/syscall_mi.h:179 [inline] syscall(ffff8000371e1900) at syscall+0xad6 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x77afb61b2b60, count: -9 ddb{0}> machine ddbcpu 1 Stopped at pmap_page_remove+0x45d: xchgq %rax,0(%r14,%rcx,1) pmap_page_remove(fffffd80085da460) at pmap_page_remove+0x45d _atomic_swap_64 machine/atomic.h:117 [inline] pmap_page_remove(fffffd80085da460) at pmap_page_remove+0x45d sys/arch/amd64/amd64/pmap.c:2005 uvm_anfree_list(fffffd8076690d20,0) at uvm_anfree_list+0xd6 amap_wipeout(fffffd806cfef0b8) at amap_wipeout+0x248 sys/uvm/uvm_amap.c:502 uvm_unmap_detach(ffff8000323a5468,0) at uvm_unmap_detach+0x8a sys/uvm/uvm_map.c:1353 uvmspace_exec(ffff8000371e8f60,1000,7f7fffffc000) at uvmspace_exec+0x44d sys/uvm/uvm_map.c:3388 sys_execve(ffff8000371e8f60,ffff8000323a5b00,ffff8000323a5a50) at sys_execve+0xadb sys/kern/kern_exec.c:448 syscall(ffff8000323a5b00) at syscall+0xaf8 mi_syscall sys/sys/syscall_mi.h:179 [inline] syscall(ffff8000323a5b00) at syscall+0xaf8 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x743cdbfd9900, count: 7 ddb{1}> trace pmap_page_remove(fffffd80085da460) at pmap_page_remove+0x45d _atomic_swap_64 machine/atomic.h:117 [inline] pmap_page_remove(fffffd80085da460) at pmap_page_remove+0x45d sys/arch/amd64/amd64/pmap.c:2005 uvm_anfree_list(fffffd8076690d20,0) at uvm_anfree_list+0xd6 amap_wipeout(fffffd806cfef0b8) at amap_wipeout+0x248 sys/uvm/uvm_amap.c:502 uvm_unmap_detach(ffff8000323a5468,0) at uvm_unmap_detach+0x8a sys/uvm/uvm_map.c:1353 uvmspace_exec(ffff8000371e8f60,1000,7f7fffffc000) at uvmspace_exec+0x44d sys/uvm/uvm_map.c:3388 sys_execve(ffff8000371e8f60,ffff8000323a5b00,ffff8000323a5a50) at sys_execve+0xadb sys/kern/kern_exec.c:448 syscall(ffff8000323a5b00) at syscall+0xaf8 mi_syscall sys/sys/syscall_mi.h:179 [inline] syscall(ffff8000323a5b00) at syscall+0xaf8 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x743cdbfd9900, count: -8