panic: uvm_fault_unwire_locked: address not in map Stopped at db_enter+0x25: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND *309308 39613 32767 0x1010 0x4080000 0K syz-executor 128478 54504 0 0x14000 0x200 1 reaper db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff830b766b) at panic+0x1e5 sys/kern/subr_prf.c:198 uvm_fault_unwire_locked(fffffd806c125c60,20000000,20001000) at uvm_fault_unwire_locked+0x487 sys/uvm/uvm_fault.c:1663 uvm_fault_unwire(fffffd806c125c60,20000000,20001000) at uvm_fault_unwire+0x55 sys/uvm/uvm_fault.c:1623 kern_sysctl(ffff80003721dfc4,2,20000100,ffff80003721dff8,0,37,6df4311920cb72a4) at kern_sysctl+0x500 sysctl_vsunlock sys/kern/kern_sysctl.c:209 [inline] kern_sysctl(ffff80003721dfc4,2,20000100,ffff80003721dff8,0,37,6df4311920cb72a4) at kern_sysctl+0x500 sys/kern/kern_sysctl.c:508 sys_sysctl(ffff800036dbd1e8,ffff80003721e130,ffff80003721e080) at sys_sysctl+0x425 syscall(ffff80003721e130) at syscall+0xbb6 mi_syscall sys/sys/syscall_mi.h:178 [inline] syscall(ffff80003721e130) at syscall+0xbb6 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x4d035371240, 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{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:437 panic(ffffffff830b766b) at panic+0x1e5 sys/kern/subr_prf.c:198 uvm_fault_unwire_locked(fffffd806c125c60,20000000,20001000) at uvm_fault_unwire_locked+0x487 sys/uvm/uvm_fault.c:1663 uvm_fault_unwire(fffffd806c125c60,20000000,20001000) at uvm_fault_unwire+0x55 sys/uvm/uvm_fault.c:1623 kern_sysctl(ffff80003721dfc4,2,20000100,ffff80003721dff8,0,37,6df4311920cb72a4) at kern_sysctl+0x500 sysctl_vsunlock sys/kern/kern_sysctl.c:209 [inline] kern_sysctl(ffff80003721dfc4,2,20000100,ffff80003721dff8,0,37,6df4311920cb72a4) at kern_sysctl+0x500 sys/kern/kern_sysctl.c:508 sys_sysctl(ffff800036dbd1e8,ffff80003721e130,ffff80003721e080) at sys_sysctl+0x425 syscall(ffff80003721e130) at syscall+0xbb6 mi_syscall sys/sys/syscall_mi.h:178 [inline] syscall(ffff80003721e130) at syscall+0xbb6 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x4d035371240, count: -8 ddb{0}> show registers rdi 0 rsi 0x1 rbp 0xffff80003721dc70 rbx 0xffffffff834d2dbf cpu_info_full_primary+0x2dbf rdx 0xffff800001261800 rcx 0xffff800036dbd1e8 rax 0xffffffff834d1ff0 cpu_info_full_primary+0x1ff0 r8 0x101010101010101 r9 0x8080808080808080 r10 0x30825dca3b791ba r11 0x6d95bcc5c6d05700 r12 0xffffffff834d2bc0 cpu_info_full_primary+0x2bc0 r13 0 r14 0 r15 0x1 rip 0xffffffff82133da5 db_enter+0x25 cs 0x8 rflags 0x246 rsp 0xffff80003721dc60 ss 0 db_enter+0x25: addq $0x8,%rsp ddb{0}> show proc PROC (syz-executor) tid=309308 pid=39613 tcnt=6 stat=onproc flags process=1010 proc=4080000 runpri=32, usrpri=54, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0xffff800036dbc7c8 scnt=5 ecnt=0 forw=0xffffffffffffffff, list=0xffff800036dbcf60,0xffff800036dbd480 process=0xffff8000fffee8e8 user=0xffff800037219000, vmspace=0xfffffd806c125c60 estcpu=4, cpticks=1, pctcpu=0.0, user=0, sys=1, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 39613 231621 35264 32767 3 0x3010 suspend syz-executor 39613 483600 35264 32767 2 0x4081010 syz-executor 39613 452043 35264 32767 2 0x4081010 syz-executor 39613 459858 35264 32767 2 0x4081010 syz-executor *39613 309308 35264 32767 7 0x4081010 syz-executor 39613 474872 35264 32767 2 0x4081010 syz-executor 4006 120268 183 32767 2 0x10 syz-executor 4006 446082 183 32767 2 0x4000010 syz-executor 4006 293018 183 32767 3 0x4000090 fsleep syz-executor 60477 351391 87105 32767 2 0x10 syz-executor 60477 258797 87105 32767 3 0x4000090 fsleep syz-executor 85966 489411 89279 0 2 0x10008a sh 60559 135724 49992 32767 2 0x10 syz-executor 87105 206466 74564 32767 2 0x490 syz-executor 65230 112544 74933 32767 3 0x90 nanoslp syz-executor 89279 473950 7829 0 3 0x80 wait syz-executor 183 216356 62916 32767 3 0x90 nanoslp syz-executor 91323 461646 14042 32767 2 0x490 syz-executor 40828 155616 10468 32767 3 0x90 nanoslp syz-executor 35264 460579 86340 32767 3 0x90 nanoslp syz-executor 49992 25527 43447 0 3 0x82 wait syz-executor 74564 401584 43447 0 3 0x82 wait syz-executor 74933 178580 43447 0 3 0x82 wait syz-executor 7829 168225 43447 0 3 0x82 wait syz-executor 62916 133514 43447 0 3 0x82 wait syz-executor 14042 104158 43447 0 3 0x82 wait syz-executor 10468 367651 43447 0 3 0x82 wait syz-executor 86340 425861 43447 0 3 0x82 wait syz-executor 43447 185906 24078 0 3 0x82 kqread syz-executor 24078 435373 56765 0 3 0x10008a sigsusp ksh 56765 383569 79953 0 3 0x98 kqread sshd-session 79953 13743 71272 0 3 0x92 kqread sshd-session 3550 260741 1 0 3 0x100083 ttyin getty 71272 158826 1 0 3 0x88 kqread sshd 52359 131413 11073 73 3 0x1100090 kqread syslogd 11073 145537 1 0 3 0x100082 sbwait syslogd 54257 316825 1 0 3 0x100080 kqread resolvd 54109 338688 87307 77 3 0x100092 kqread dhcpleased 60052 399102 87307 77 3 0x100092 kqread dhcpleased 87307 211216 1 0 3 0x80 kqread dhcpleased 82631 391316 0 0 3 0x14200 bored smr 70615 306189 0 0 3 0x14200 pgzero zerothread 73266 392645 0 0 3 0x14200 aiodoned aiodoned 36533 117863 0 0 3 0x14200 syncer update 12443 108731 0 0 3 0x14200 cleaner cleaner 54504 128478 0 0 7 0x14200 reaper 28091 298613 0 0 3 0x14200 pgdaemon pagedaemon 36085 10922 0 0 3 0x14200 bored viomb 64256 70667 0 0 3 0x40014200 acpi0 acpi0 81989 449659 0 0 3 0x40014200 idle1 95067 51415 0 0 3 0x14200 bored softnet3 77303 50637 0 0 3 0x14200 bored softnet2 14285 294239 0 0 3 0x14200 bored softnet1 19188 68858 0 0 3 0x14200 bored softnet0 42673 432431 0 0 3 0x14200 bored systqmp 76124 59571 0 0 3 0x14200 bored systq 50375 91593 0 0 3 0x14200 tmoslp softclockmp 73212 449610 0 0 3 0x40014200 tmoslp softclock 59750 273257 0 0 3 0x40014200 idle0 1 164795 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 (0xfffffd8007f67ad8) #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 #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 #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+0x246 sys/kern/kern_exit.c:477 #10 proc_trampoline+0x10 Process 39613 (syz-executor) thread 0xffff800036dbd1e8 (309308) shared rwlock vmmaplk r = 0 (0xfffffd806c125d58) #0 witness_lock+0x5bb stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5bb sys/kern/subr_witness.c:1155 #1 uvm_fault_unwire+0x3e sys/uvm/uvm_fault.c:1622 #2 kern_sysctl+0x500 sysctl_vsunlock sys/kern/kern_sysctl.c:209 [inline] #2 kern_sysctl+0x500 sys/kern/kern_sysctl.c:508 #3 sys_sysctl+0x425 #4 syscall+0xbb6 mi_syscall sys/sys/syscall_mi.h:178 [inline] #4 syscall+0xbb6 sys/arch/amd64/amd64/trap.c:577 #5 Xsyscall+0x128 exclusive kernel_lock &kernel_lock r = 0 (0xffffffff835c3528) #0 witness_lock+0x5bb stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5bb sys/kern/subr_witness.c:1155 #1 __mp_acquire_count+0x58 #2 mi_switch+0x4b7 sys/kern/sched_bsd.c:441 #3 sleep_finish+0x2a6 sys/kern/kern_synch.c:423 #4 rw_enter+0x348 sys/kern/kern_rwlock.c:285 #5 rrw_enter+0xbe sys/kern/kern_rwlock.c:464 #6 VOP_LOCK+0xa6 sys/kern/vfs_vops.c:524 #7 vn_lock+0xa4 sys/kern/vfs_vnops.c:564 #8 vfs_getcwd_common+0xd1 sys/kern/vfs_getcwd.c:287 #9 sysctl_proc_cwd+0x2b2 sys/kern/kern_sysctl.c:2322 #10 kern_sysctl+0x492 sys/kern/kern_sysctl.c:506 #11 sys_sysctl+0x425 #12 syscall+0xbb6 mi_syscall sys/sys/syscall_mi.h:178 [inline] #12 syscall+0xbb6 sys/arch/amd64/amd64/trap.c:577 #13 Xsyscall+0x128 exclusive rwlock sysctllk r = 0 (0xffffffff8341a990) #0 witness_lock+0x5bb stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5bb sys/kern/subr_witness.c:1155 #1 rw_enter+0x41b sys/kern/kern_rwlock.c:309 #2 sysctl_vslock+0x45 sys/kern/kern_sysctl.c:181 #3 kern_sysctl+0x1ad sys/kern/kern_sysctl.c:504 #4 sys_sysctl+0x425 #5 syscall+0xbb6 mi_syscall sys/sys/syscall_mi.h:178 [inline] #5 syscall+0xbb6 sys/arch/amd64/amd64/trap.c:577 #6 Xsyscall+0x128 Process 60559 (syz-executor) thread 0xffff8000ffff6f48 (135724) exclusive rrwlock inode r = 0 (0xfffffd806c0e4810) #0 witness_lock+0x5bb stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5bb sys/kern/subr_witness.c:1155 #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 vget+0x2bd sys/kern/vfs_subr.c:678 #6 ufs_ihashget+0x192 sys/ufs/ufs/ufs_ihash.c:98 #7 ffs_vget+0x8c sys/ufs/ffs/ffs_vfsops.c:1201 #8 ufs_lookup+0x19f8 sys/ufs/ufs/ufs_lookup.c:478 #9 VOP_LOOKUP+0x6e sys/kern/vfs_vops.c:85 #10 vfs_lookup+0x8fa sys/kern/vfs_lookup.c:566 #11 namei+0x7aa sys/kern/vfs_lookup.c:250 #12 dounlinkat+0xc1 sys/kern/vfs_syscalls.c:1852 #13 syscall+0xaf8 mi_syscall sys/sys/syscall_mi.h:178 [inline] #13 syscall+0xaf8 sys/arch/amd64/amd64/trap.c:577 #14 Xsyscall+0x128 exclusive rrwlock inode r = 0 (0xfffffd806c5aec48) #0 witness_lock+0x5bb stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5bb sys/kern/subr_witness.c:1155 #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 vfs_lookup+0x109 sys/kern/vfs_lookup.c:418 #6 namei+0x7aa sys/kern/vfs_lookup.c:250 #7 dounlinkat+0xc1 sys/kern/vfs_syscalls.c:1852 #8 syscall+0xaf8 mi_syscall sys/sys/syscall_mi.h:178 [inline] #8 syscall+0xaf8 sys/arch/amd64/amd64/trap.c:577 #9 Xsyscall+0x128 Process 54504 (reaper) thread 0xffff800029fd9448 (128478) exclusive kernel: protection fault trap, code=0 Faulted in DDB; continuing... ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10180 11046K 11059K 166960K 11258 0 pcb 17 12K 12K 166960K 17 0 rtable 234 6K 7K 166960K 347 0 pf 31 16K 16K 166960K 31 0 ifaddr 42 7K 7K 166960K 44 0 ifgroup 50 2K 2K 166960K 50 0 counters 64 36K 36K 166960K 64 0 ioctlops 0 0K 2K 166960K 29 0 iov 0 0K 4K 166960K 1 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1364 86K 86K 166960K 1382 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 1K 166960K 2 0 VM map 2 1K 1K 166960K 2 0 sem 3 0K 0K 166960K 3 0 dirhash 12 2K 2K 166960K 12 0 ACPI 1690 195K 286K 166960K 12468 0 file desc 22 81K 129K 166960K 168 0 sigio 0 0K 0K 166960K 1 0 proc 58 79K 115K 166960K 473 0 subproc 104 6K 6K 166960K 104 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 1 0 in_multi 99 7K 7K 166960K 99 0 ether_multi 1 0K 0K 166960K 1 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 55 254K 254K 166960K 55 0 exec 0 0K 1K 166960K 344 0 fusefs mount 1 32K 32K 166960K 1 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 257 74K 75K 166960K 2899 0 UVM aobj 3 2K 2K 166960K 3 0 pinsyscall 45 90K 112K 166960K 1161 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 2 0 NDP 11 0K 2K 166960K 27 0 temp 38 6810K 6874K 166960K 3711 0 kqueue 13 20K 24K 166960K 29 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 37 0 33 1 0 1 1 0 8 0 rtentry 112 111 0 1 4 0 4 4 0 8 0 unpcb 144 53 0 36 1 0 1 1 0 8 0 syncache 336 3 0 3 1 0 1 1 0 8 1 tcpcb 808 17 0 13 1 0 1 1 0 8 0 arp 120 18 0 0 1 0 1 1 0 8 0 inpcb 336 82 0 75 1 0 1 1 0 8 0 nd6 136 24 0 0 1 0 1 1 0 8 0 kcovpl 48 8 0 0 1 0 1 1 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 453 0 0 29 0 29 29 0 8 0 art_table 32 454 0 0 4 0 4 4 0 8 0 art_node 16 110 0 10 1 0 1 1 0 8 0 semupl 112 1 0 1 1 0 1 1 0 8 1 semapl 112 1 0 0 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 1574 0 72 94 0 94 94 0 8 0 ffsino 272 1574 0 72 101 0 101 101 0 8 0 nchpl 144 1793 0 116 63 0 63 63 0 8 0 uvmvnodes 80 1687 0 0 35 0 35 35 0 8 0 vnodes 216 1687 0 0 94 0 94 94 0 8 0 namei 1024 5213 0 5208 2 0 2 2 0 8 1 percpumem 16 46 0 0 1 0 1 1 0 8 0 kstatmem 264 22 0 0 2 0 2 2 0 8 0 scxspl 216 5259 0 5259 3 1 2 2 1 8 2 plimitpl 152 37 0 11 2 0 2 2 0 8 0 sigapl 424 441 0 385 8 0 8 8 0 8 0 futexpl 64 380 0 378 1 0 1 1 0 8 0 knotepl 120 302 0 0 10 0 10 10 0 8 0 kqueuepl 216 31 0 20 1 0 1 1 0 8 0 pipepl 320 100 0 73 3 0 3 3 0 8 0 fdescpl 496 423 0 387 7 1 6 6 0 8 0 filepl 152 1434 0 1189 11 0 11 11 0 8 0 lockfpl 104 24 0 21 1 0 1 1 0 8 0 lockfspl 48 10 0 7 1 0 1 1 0 8 0 sessionpl 144 21 0 5 1 0 1 1 0 8 0 pgrppl 48 29 0 5 1 0 1 1 0 8 0 ucredpl 104 102 0 84 1 0 1 1 0 8 0 zombiepl 144 390 0 385 1 0 1 1 0 8 0 processpl 1160 441 0 385 5 0 5 5 0 8 0 procpl 648 496 0 431 7 0 7 7 0 8 0 sockpl 664 172 0 144 3 0 3 3 0 8 0 mcl8k 8192 4 0 0 1 0 1 1 0 8 0 mcl4k 4096 165 0 0 21 0 21 21 0 8 0 mcl2k 2048 19 0 0 3 0 3 3 0 8 0 mtagpl 96 2 0 0 1 0 1 1 0 8 0 mbufpl 256 186 0 0 12 0 12 12 0 8 0 bufpl 280 2178 0 94 149 0 149 149 0 8 0 anonpl 24 120573 0 113195 46 0 46 46 0 185 0 amapchunkpl 152 9194 0 8582 27 0 27 27 0 158 1 amappl16 200 2885 0 2668 12 0 12 12 0 8 0 amappl15 192 12 0 12 1 1 0 1 0 8 0 amappl14 184 101 0 90 1 0 1 1 0 8 0 amappl13 176 7 0 7 1 1 0 1 0 8 0 amappl12 168 1025 0 988 2 0 2 2 0 8 0 amappl11 160 48 0 38 1 0 1 1 0 8 0 amappl10 152 11 0 11 1 1 0 1 0 8 0 amappl9 144 132 0 132 1 1 0 1 0 8 0 amappl8 136 21 0 19 1 0 1 1 0 8 0 amappl7 128 112 0 102 1 0 1 1 0 8 0 amappl6 120 160 0 158 1 0 1 1 0 8 0 amappl5 112 142 0 134 1 0 1 1 0 8 0 amappl4 104 275 0 259 1 0 1 1 0 8 0 amappl3 96 1733 0 1629 3 0 3 3 0 8 0 amappl2 88 688 0 602 3 0 3 3 0 8 0 amappl1 80 7143 0 6623 13 0 13 13 0 8 0 amappl 88 2569 0 2367 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 2 0 0 1 0 1 1 0 8 0 uaddrrnd 24 423 0 387 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 423 0 387 1 0 1 1 0 8 0 vmmpekpl 168 4695 0 4656 2 0 2 2 0 8 0 vmmpepl 168 33444 0 31311 96 0 96 96 0 357 0 vmsppl 448 422 0 387 6 0 6 6 0 8 0 rwobjpl 56 14716 0 11965 40 0 40 40 0 8 0 pdppl 4096 853 0 774 113 18 95 99 0 8 16 pvpl 32 13670 0 0 111 0 111 111 0 265 0 pmappl 248 422 0 387 4 1 3 3 0 8 0 extentpl 40 55 0 38 1 0 1 1 0 8 0 phpool 112 392 0 20 11 0 11 11 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(ffffffff830b766b) at panic+0x1e5 sys/kern/subr_prf.c:198 uvm_fault_unwire_locked(fffffd806c125c60,20000000,20001000) at uvm_fault_unwire_locked+0x487 sys/uvm/uvm_fault.c:1663 uvm_fault_unwire(fffffd806c125c60,20000000,20001000) at uvm_fault_unwire+0x55 sys/uvm/uvm_fault.c:1623 kern_sysctl(ffff80003721dfc4,2,20000100,ffff80003721dff8,0,37,6df4311920cb72a4) at kern_sysctl+0x500 sysctl_vsunlock sys/kern/kern_sysctl.c:209 [inline] kern_sysctl(ffff80003721dfc4,2,20000100,ffff80003721dff8,0,37,6df4311920cb72a4) at kern_sysctl+0x500 sys/kern/kern_sysctl.c:508 sys_sysctl(ffff800036dbd1e8,ffff80003721e130,ffff80003721e080) at sys_sysctl+0x425 syscall(ffff80003721e130) at syscall+0xbb6 mi_syscall sys/sys/syscall_mi.h:178 [inline] syscall(ffff80003721e130) at syscall+0xbb6 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x4d035371240, count: -8 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_lock(ffffffff835c3320) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:113 [inline] __mp_lock(ffffffff835c3320) at __mp_lock+0x192 sys/kern/kern_lock.c:144 reaper(ffff800029fd9448) at reaper+0x24b sys/kern/kern_exit.c:478 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 __mp_lock(ffffffff835c3320) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:113 [inline] __mp_lock(ffffffff835c3320) at __mp_lock+0x192 sys/kern/kern_lock.c:144 reaper(ffff800029fd9448) at reaper+0x24b sys/kern/kern_exit.c:478 end trace frame: 0x0, count: -5