Password:panic: kernel diagnostic assertion "cifp != NULL" failed: file "/syzkaller/managers/multicore/kernel/sys/net/route.c", line 1078 Stopped at db_enter+0x1c: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND *248835 42374 0 0x8000000 0x4000000 0K syz-executor.1 447265 89050 0 0x14000 0x200 1 reaper db_enter() at db_enter+0x1c sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff82955c01) at panic+0x17b sys/kern/subr_prf.c:198 __assert(ffffffff8290b1cf,ffffffff828835cd,436,ffffffff8287a461) at __assert+0x29 sys/kern/subr_prf.c:157 rtrequest(1,ffff80002c2ab958,4,ffff80002c2aba00,0) at rtrequest+0xa23 sys/net/route.c:1078 rt_ifa_add(ffff800000d91500,840100,ffff800000d91558,0) at rt_ifa_add+0x1a7 sys/net/route.c:1273 in_ifinit(ffff800000e0b800,ffff800000d91500,ffff800000d91558,1) at in_ifinit+0x368 in_insert_prefix sys/netinet/in.c:770 [inline] in_ifinit(ffff800000e0b800,ffff800000d91500,ffff800000d91558,1) at in_ifinit+0x368 sys/netinet/in.c:703 in_ioctl_change_ifaddr(8040691a,ffff80002c2abc60,ffff800000e0b800) at in_ioctl_change_ifaddr+0x68a sys/netinet/in.c:504 ifioctl(ffff800000e82248,8040691a,ffff80002c2abc60,ffff80002a277210) at ifioctl+0x106c pru_control sys/sys/protosw.h:377 [inline] ifioctl(ffff800000e82248,8040691a,ffff80002c2abc60,ffff80002a277210) at ifioctl+0x106c sys/net/if.c:2449 sys_ioctl(ffff80002a277210,ffff80002c2abe40,ffff80002c2abd90) at sys_ioctl+0x4a9 syscall(ffff80002c2abe40) at syscall+0x8cf mi_syscall sys/sys/syscall_mi.h:180 [inline] syscall(ffff80002c2abe40) at syscall+0x8cf sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xab19af17e20, count: 4 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}> show proc PROC (syz-executor.1) tid=248835 pid=42374 tcnt=2 stat=onproc flags process=8000000 proc=4000000 runpri=32, usrpri=84, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0x0 forw=0xffffffffffffffff, list=0xffff80002a276f80,0xffffffff82dd1f50 process=0xffff8000325470f0 user=0xffff80002c2a6000, vmspace=0xfffffd806efa7a58 estcpu=36, cpticks=1, pctcpu=0.0, user=0, sys=1, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 42374 162003 82203 0 2 0x8000000 syz-executor.1 *42374 248835 82203 0 7 0xc000000 syz-executor.1 45190 158612 89132 0 3 0x181000b3 ttyin login_passwd 92215 150770 24356 0 2 0x8000000 syz-executor.0 92215 47818 24356 0 3 0xc000080 netcon syz-executor.0 90311 355142 85362 0 2 0x8000480 syz-executor.3 90311 394882 85362 0 3 0xc000080 netcon syz-executor.3 90311 12424 85362 0 3 0xc000080 fsleep syz-executor.3 43418 85548 14635 0 3 0x8000080 nanoslp syz-executor.5 43418 244061 14635 0 3 0xc000080 kqread syz-executor.5 43418 268720 14635 0 3 0xc000080 fsleep syz-executor.5 24356 190973 75870 0 3 0x8000082 nanoslp syz-executor.0 38023 211778 0 0 3 0x14200 acct acct 16096 445225 75870 0 2 0x8000482 syz-executor.7 14635 516448 75870 0 2 0x8000482 syz-executor.5 82203 376641 75870 0 2 0x8000482 syz-executor.1 85362 505692 75870 0 3 0x8000082 nanoslp syz-executor.3 12687 405873 75870 0 3 0x8000082 nanoslp syz-executor.2 33990 373661 75870 0 3 0x8000082 nanoslp syz-executor.4 89132 211333 1 0 3 0x18000083 sbwait login 65625 463943 0 0 3 0x14200 bored sosplice 75870 66720 33847 0 3 0x1a000082 thrsleep syz-fuzzer 75870 506002 33847 0 3 0x1e000082 thrsleep syz-fuzzer 75870 108155 33847 0 3 0x1e000082 wait syz-fuzzer 75870 251527 33847 0 3 0x1e000082 wait syz-fuzzer 75870 177648 33847 0 3 0x1e000082 wait syz-fuzzer 75870 414869 33847 0 3 0x1e000082 thrsleep syz-fuzzer 75870 498564 33847 0 3 0x1e000082 wait syz-fuzzer 75870 139978 33847 0 3 0x1e000082 wait syz-fuzzer 75870 475747 33847 0 3 0x1e000082 thrsleep syz-fuzzer 75870 63723 33847 0 3 0x1e000082 kqread syz-fuzzer 75870 121266 33847 0 3 0x1e000082 thrsleep syz-fuzzer 75870 129278 33847 0 3 0x1e000082 thrsleep syz-fuzzer 75870 161169 33847 0 3 0x1e000082 wait syz-fuzzer 75870 312577 33847 0 3 0x1e000082 thrsleep syz-fuzzer 75870 163017 33847 0 3 0x1e000082 wait syz-fuzzer 75870 309563 33847 0 3 0x1e000082 thrsleep syz-fuzzer 33847 219248 50294 0 3 0x810008a sigsusp ksh 50294 335641 19649 0 3 0x1800009a kqread sshd 19649 45353 1 0 3 0x18000088 kqread sshd 25811 112786 79223 74 3 0x19100092 bpf pflogd 79223 260184 1 0 3 0x18000080 sbwait pflogd 63893 298705 25438 73 3 0x19100090 kqread syslogd 25438 298280 1 0 3 0x18100082 sbwait syslogd 13140 404753 1 0 3 0x18100080 kqread resolvd 8937 115158 60668 77 3 0x18100092 kqread dhcpleased 80868 181886 60668 77 3 0x18100092 kqread dhcpleased 60668 90055 1 0 3 0x18000080 kqread dhcpleased 43705 441634 0 0 2 0x40014200 smr 49697 138924 0 0 2 0x14200 zerothread 56569 91385 0 0 3 0x14200 aiodoned aiodoned 93739 233386 0 0 3 0x14200 syncer update 32307 291726 0 0 3 0x14200 cleaner cleaner 89050 447265 0 0 7 0x14200 reaper 8416 232891 0 0 3 0x14200 pgdaemon pagedaemon 1627 388609 0 0 3 0x14200 bored viomb 55027 369389 0 0 3 0x40014200 acpi0 acpi0 37036 223841 0 0 3 0x40014200 idle1 34328 442696 0 0 3 0x14200 bored softnet3 35006 227213 0 0 3 0x14200 bored softnet2 45144 411031 0 0 3 0x14200 bored softnet1 15773 226056 0 0 3 0x14200 bored softnet0 19208 195754 0 0 3 0x14200 bored systqmp 77243 431848 0 0 3 0x14200 bored systq 85037 99773 0 0 2 0x14200 softclockmp 9546 392911 0 0 2 0x40014200 softclock 60355 18242 0 0 3 0x40014200 idle0 1 29957 0 0 3 0x8000082 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks CPU 1: exclusive sched_lock &sched_lock r = 0 (0xffffffff82dd1be0) #0 witness_lock+0x446 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x446 sys/kern/subr_witness.c:1187 #1 wakeup_n+0x58 sys/kern/kern_synch.c:539 #2 uvm_pmr_freepages+0x31c sys/uvm/uvm_pmemrange.c:1304 #3 pmap_do_remove+0x678 sys/arch/amd64/amd64/pmap.c:1915 #4 uvm_unmap_kill_entry_withlock+0x1b1 sys/uvm/uvm_map.c:1897 #5 uvm_map_teardown+0x1c7 uvm_map_addr_RBT_LEFT sys/uvm/uvm_map.h:176 [inline] #5 uvm_map_teardown+0x1c7 sys/uvm/uvm_map.c:2534 #6 uvmspace_free+0xa6 sys/uvm/uvm_map.c:3461 #7 reaper+0x197 sys/kern/kern_exit.c:463 #8 proc_trampoline+0x10 exclusive mutex &uvm.fpageqlock r = 0 (0xffffffff82e62358) #0 witness_lock+0x446 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x446 sys/kern/subr_witness.c:1187 #1 mtx_enter_try+0x103 #2 mtx_enter+0x4e sys/kern/kern_lock.c:266 #3 uvm_pmr_freepages+0x123 sys/uvm/uvm_pmemrange.c:1289 #4 pmap_do_remove+0x678 sys/arch/amd64/amd64/pmap.c:1915 #5 uvm_unmap_kill_entry_withlock+0x1b1 sys/uvm/uvm_map.c:1897 #6 uvm_map_teardown+0x1c7 uvm_map_addr_RBT_LEFT sys/uvm/uvm_map.h:176 [inline] #6 uvm_map_teardown+0x1c7 sys/uvm/uvm_map.c:2534 #7 uvmspace_free+0xa6 sys/uvm/uvm_map.c:3461 #8 reaper+0x197 sys/kern/kern_exit.c:463 #9 proc_trampoline+0x10 Process 42374 (syz-executor.1) thread 0xffff80002a277210 (248835) exclusive rwlock netlock r = 0 (0xffffffff82cdcca0) #0 witness_lock+0x446 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x446 sys/kern/subr_witness.c:1187 #1 in_ioctl_change_ifaddr+0x91 sys/netinet/in.c:413 #2 ifioctl+0x106c pru_control sys/sys/protosw.h:377 [inline] #2 ifioctl+0x106c sys/net/if.c:2449 #3 sys_ioctl+0x4a9 #4 syscall+0x8cf mi_syscall sys/sys/syscall_mi.h:180 [inline] #4 syscall+0x8cf sys/arch/amd64/amd64/trap.c:577 #5 Xsyscall+0x128 exclusive kernel_lock &kernel_lock r = 1 (0xffffffff82d64770) #0 witness_lock+0x446 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x446 sys/kern/subr_witness.c:1187 #1 ifioctl+0x37d if_unit sys/net/if.c:1872 [inline] #1 ifioctl+0x37d sys/net/if.c:2096 #2 sys_ioctl+0x4a9 #3 syscall+0x8cf mi_syscall sys/sys/syscall_mi.h:180 [inline] #3 syscall+0x8cf sys/arch/amd64/amd64/trap.c:577 #4 Xsyscall+0x128 Process 89050 (reaper) thread 0xffff80002a149718 (447265) exclusive rwlock vmmaplk r = 0 (0xfffffd8069322100) #0 witness_lock+0x446 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x446 sys/kern/subr_witness.c:1187 #1 rw_enter+0x32a sys/kern/kern_rwlock.c:309 #2 vm_map_lock_ln+0xfa sys/uvm/uvm_map.c:5291 #3 uvm_map_teardown+0xb3 sys/uvm/uvm_map.c:2502 #4 uvmspace_free+0xa6 sys/uvm/uvm_map.c:3461 #5 reaper+0x197 sys/kern/kern_exit.c:463 #6 proc_trampoline+0x10 ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10185 6478K 6807K 166960K 12158 0 pcb 15 10K 10K 166960K 121 0 rtable 215 6K 7K 166960K 972 0 pf 32 9K 10K 166960K 114 0 ifaddr 42 15K 16K 166960K 140 0 ifgroup 53 2K 2K 166960K 178 0 sysctl 4 1K 1K 166960K 8 0 counters 64 36K 36K 166960K 130 0 ioctlops 0 0K 4K 166960K 1531 0 iov 0 0K 16K 166960K 79 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1402 88K 88K 166960K 2024 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 9K 166960K 26 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 0K 166960K 88 0 dirhash 12 2K 3K 166960K 33 0 ACPI 1697 195K 286K 166960K 12548 0 file desc 16 57K 93K 166960K 1236 0 sigio 0 0K 0K 166960K 33 0 proc 66 91K 128K 166960K 1136 0 subproc 104 6K 6K 166960K 351 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 197 0 in_multi 87 6K 7K 166960K 346 0 ether_multi 1 0K 0K 166960K 10 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 73 334K 334K 166960K 73 0 exec 0 0K 1K 166960K 713 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 337 96K 96K 166960K 12704 0 UVM aobj 31 4K 6K 166960K 39 0 pinsyscall 42 84K 108K 166960K 2916 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 2 0K 1K 166960K 75 0 NDP 12 0K 2K 166960K 96 0 temp 75 6812K 6936K 166960K 43542 0 kqueue 12 18K 26K 166960K 127 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 120 193 0 190 3 2 1 3 0 8 0 rtentry 112 333 0 234 4 0 4 4 0 8 0 unpcb 144 904 0 887 12 6 6 6 0 8 5 syncache 336 16 0 16 5 4 1 1 0 8 1 tcpqe 32 182 0 182 3 2 1 1 0 8 1 tcpcb 808 432 0 420 9 7 2 8 0 8 0 arp 120 59 0 46 1 0 1 1 0 8 0 inpcb 392 1232 0 1212 13 10 3 9 0 8 1 nd6 136 86 0 62 1 0 1 1 0 8 0 pkpcb 40 2 0 2 2 1 1 1 0 8 1 kcovpl 48 27 0 19 1 0 1 1 0 8 0 ppxss 1168 7 0 6 3 2 1 1 0 8 0 pffrag 232 7 0 7 1 0 1 1 0 482 1 pffrnode 88 7 0 7 1 0 1 1 0 8 1 pffrent 40 10 0 10 1 0 1 1 0 8 1 pfosfp 40 1428 0 1005 5 0 5 5 0 8 0 pfosfpen 112 1428 0 714 21 0 21 21 0 8 0 pfstitem 24 86 0 70 1 0 1 1 0 8 0 pfstkey 128 86 0 70 2 0 2 2 0 8 1 pfstate 376 86 0 70 5 0 5 5 0 8 3 pfrule 1344 21 0 16 2 1 1 2 0 8 0 art_heap8 4096 2 0 0 2 0 2 2 0 8 0 art_heap4 256 1296 0 876 39 10 29 29 0 8 2 art_table 32 1298 0 876 4 0 4 4 0 8 0 art_node 16 329 0 240 1 0 1 1 0 8 0 sysvmsgpl 40 5 0 1 1 0 1 1 0 8 0 semupl 112 3 0 3 1 1 0 1 0 8 0 semapl 112 85 0 75 1 0 1 1 0 8 0 shmpl 112 36 0 8 1 0 1 1 0 8 0 dirhash 1024 31 0 14 3 0 3 3 0 8 0 dino2pl 256 3008 0 1467 97 0 97 97 0 8 0 ffsino 272 3008 0 1467 103 0 103 103 0 8 0 nchpl 144 4681 0 2936 67 0 67 67 0 8 0 uvmvnodes 80 3583 0 0 74 0 74 74 0 8 0 vnodes 216 3583 0 0 200 0 200 200 0 8 0 namei 1024 17162 0 17162 3 2 1 3 0 8 1 percpumem 16 79 0 33 1 0 1 1 0 8 0 vcpupl 2048 3 0 0 1 0 1 1 0 8 0 vmpool 696 15 0 12 1 0 1 1 0 8 0 kstatmem 264 90 0 66 2 0 2 2 0 8 0 scxspl 216 15662 0 15662 15 12 3 8 1 8 3 plimitpl 152 160 0 143 1 0 1 1 0 8 0 sigapl 424 1541 0 1490 7 0 7 7 0 8 0 futexpl 64 12369 0 12367 1 0 1 1 0 8 0 knotepl 120 314 0 0 10 0 10 10 0 8 0 kqueuepl 216 213 0 204 1 0 1 1 0 8 0 pipepl 320 300 0 274 3 0 3 3 0 8 0 fdescpl 496 1500 0 1470 5 0 5 5 0 8 0 filepl 152 7956 0 7698 21 6 15 15 0 8 4 lockfpl 104 196 0 194 1 0 1 1 0 8 0 lockfspl 48 82 0 80 1 0 1 1 0 8 0 sessionpl 144 43 0 26 1 0 1 1 0 8 0 pgrppl 48 72 0 55 1 0 1 1 0 8 0 ucredpl 104 1239 0 1224 1 0 1 1 0 8 0 zombiepl 144 1494 0 1490 1 0 1 1 0 8 0 processpl 1136 1541 0 1490 5 0 5 5 0 8 1 procpl 656 2706 0 2633 8 1 7 8 0 8 0 srpgc 96 10 0 10 4 3 1 1 0 8 1 sosppl 168 19 0 19 5 4 1 1 0 8 1 sockpl 584 2420 0 2380 23 12 11 12 0 8 8 mcl64k 65536 5 0 0 1 0 1 1 0 8 0 mcl16k 16384 10 0 0 2 0 2 2 0 8 0 mcl12k 12288 7 0 0 1 0 1 1 0 8 0 mcl9k 9216 4 0 0 1 0 1 1 0 8 0 mcl8k 8192 6 0 0 1 0 1 1 0 8 0 mcl4k 4096 13 0 0 2 0 2 2 0 8 0 mcl2k2 2112 3 0 0 1 0 1 1 0 8 0 mcl2k 2048 249 0 0 32 0 32 32 0 8 0 mtagpl 96 70 0 0 2 0 2 2 0 8 0 mbufpl 256 963 0 0 60 0 60 60 0 8 0 bufpl 280 6574 0 319 447 0 447 447 0 8 0 anonpl 24 292407 0 286586 86 28 58 62 0 186 19 amapchunkpl 152 39867 0 39122 48 18 30 38 0 158 1 amappl16 200 7268 0 7151 30 17 13 20 0 8 5 amappl15 192 9 0 9 2 2 0 1 0 8 0 amappl14 184 224 0 208 2 1 1 2 0 8 0 amappl13 176 31 0 31 1 1 0 1 0 8 0 amappl12 168 2467 0 2433 4 2 2 3 0 8 0 amappl11 160 66 0 52 1 0 1 1 0 8 0 amappl10 152 111 0 100 1 0 1 1 0 8 0 amappl9 144 226 0 224 1 0 1 1 0 8 0 amappl8 136 340 0 265 4 0 4 4 0 8 0 amappl7 128 60 0 45 1 0 1 1 0 8 0 amappl6 120 633 0 612 2 1 1 2 0 8 0 amappl5 112 262 0 247 1 0 1 1 0 8 0 amappl4 104 733 0 691 2 0 2 2 0 8 0 amappl3 96 7906 0 7803 3 0 3 3 0 8 0 amappl2 88 2010 0 1928 4 2 2 4 0 8 0 amappl1 80 15069 0 14497 23 10 13 23 0 8 0 amappl 88 11911 0 11690 6 0 6 6 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 38 0 8 1 0 1 1 0 8 0 uaddrrnd 24 1515 0 1482 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 1515 0 1482 1 0 1 1 0 8 0 vmmpekpl 168 15710 0 15647 4 0 4 4 0 8 0 vmmpepl 168 116128 0 113988 142 26 116 119 0 357 16 vmsppl 440 1514 0 1481 7 2 5 5 0 8 0 rwobjpl 56 37942 0 33062 75 6 69 69 0 8 0 pdppl 4096 3037 0 2965 188 114 74 83 0 8 2 pvpl 32 45239 0 0 366 1 365 365 0 265 0 pmappl 248 1514 0 1481 3 0 3 3 0 8 0 extentpl 40 56 0 38 1 0 1 1 0 8 0 phpool 112 577 0 153 13 0 13 13 0 8 0 ddb{0}> machine ddbcpu 0 Invalid cpu 0 ddb{0}> trace db_enter() at db_enter+0x1c sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff82955c01) at panic+0x17b sys/kern/subr_prf.c:198 __assert(ffffffff8290b1cf,ffffffff828835cd,436,ffffffff8287a461) at __assert+0x29 sys/kern/subr_prf.c:157 rtrequest(1,ffff80002c2ab958,4,ffff80002c2aba00,0) at rtrequest+0xa23 sys/net/route.c:1078 rt_ifa_add(ffff800000d91500,840100,ffff800000d91558,0) at rt_ifa_add+0x1a7 sys/net/route.c:1273 in_ifinit(ffff800000e0b800,ffff800000d91500,ffff800000d91558,1) at in_ifinit+0x368 in_insert_prefix sys/netinet/in.c:770 [inline] in_ifinit(ffff800000e0b800,ffff800000d91500,ffff800000d91558,1) at in_ifinit+0x368 sys/netinet/in.c:703 in_ioctl_change_ifaddr(8040691a,ffff80002c2abc60,ffff800000e0b800) at in_ioctl_change_ifaddr+0x68a sys/netinet/in.c:504 ifioctl(ffff800000e82248,8040691a,ffff80002c2abc60,ffff80002a277210) at ifioctl+0x106c pru_control sys/sys/protosw.h:377 [inline] ifioctl(ffff800000e82248,8040691a,ffff80002c2abc60,ffff80002a277210) at ifioctl+0x106c sys/net/if.c:2449 sys_ioctl(ffff80002a277210,ffff80002c2abe40,ffff80002c2abd90) at sys_ioctl+0x4a9 syscall(ffff80002c2abe40) at syscall+0x8cf mi_syscall sys/sys/syscall_mi.h:180 [inline] syscall(ffff80002c2abe40) at syscall+0x8cf sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xab19af17e20, count: -11 ddb{0}> machine ddbcpu 1 Stopped at x86_ipi_db+0x1e: addq $0x8,%rsp x86_ipi_db(ffff800029cebff0) at x86_ipi_db+0x1e sys/arch/amd64/amd64/db_interface.c:393 x86_ipi_handler() at x86_ipi_handler+0xb7 sys/arch/amd64/amd64/ipi.c:106 Xresume_lapic_ipi() at Xresume_lapic_ipi+0x27 __mp_lock(ffffffff82d64568) at __mp_lock+0x122 __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff82d64568) at __mp_lock+0x122 sys/kern/kern_lock.c:147 uvm_unmap_detach(ffff80002a154f40,1) at uvm_unmap_detach+0x113 sys/uvm/uvm_map.c:1371 uvm_map_teardown(fffffd8069322010) at uvm_map_teardown+0x2f5 sys/uvm/uvm_map.c:2554 uvmspace_free(fffffd8069322010) at uvmspace_free+0xa6 sys/uvm/uvm_map.c:3461 reaper(ffff80002a149718) at reaper+0x197 sys/kern/kern_exit.c:463 end trace frame: 0x0, count: 7 ddb{1}> trace x86_ipi_db(ffff800029cebff0) at x86_ipi_db+0x1e sys/arch/amd64/amd64/db_interface.c:393 x86_ipi_handler() at x86_ipi_handler+0xb7 sys/arch/amd64/amd64/ipi.c:106 Xresume_lapic_ipi() at Xresume_lapic_ipi+0x27 __mp_lock(ffffffff82d64568) at __mp_lock+0x122 __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff82d64568) at __mp_lock+0x122 sys/kern/kern_lock.c:147 uvm_unmap_detach(ffff80002a154f40,1) at uvm_unmap_detach+0x113 sys/uvm/uvm_map.c:1371 uvm_map_teardown(fffffd8069322010) at uvm_map_teardown+0x2f5 sys/uvm/uvm_map.c:2554 uvmspace_free(fffffd8069322010) at uvmspace_free+0xa6 sys/uvm/uvm_map.c:3461 reaper(ffff80002a149718) at reaper+0x197 sys/kern/kern_exit.c:463 end trace frame: 0x0, count: -8