panic: kernel diagnostic assertion "uvm_page_owner_locked_p(pg, TRUE)" failed: file "/syzkaller/managers/multicore/kernel/sys/uvm/uvm_page.c", line 1249 Stopped at db_enter+0x25: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND 217992 2546 0 0x14000 0x200 1 softnet0 db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438 panic(ffffffff8337f557) at panic+0x1e5 sys/kern/subr_prf.c:198 __assert(ffffffff833c2c5c,ffffffff833b983c,4e1,ffffffff833c2acd) at __assert+0x29 sys/kern/subr_prf.c:-1 uvm_pageunwire(fffffd80090f83a8) at uvm_pageunwire+0x1dd uvm_fault_unwire_locked(fffffd805ffd63f8,855f4d1b000,855f511a000) at uvm_fault_unwire_locked+0x35f sys/uvm/uvm_fault.c:1812 uvm_unmap_kill_entry_withlock(fffffd805ffd63f8,fffffd806b8ec258,0) at uvm_unmap_kill_entry_withlock+0x81 sys/uvm/uvm_map.c:1860 uvm_map_teardown(fffffd805ffd63f8) at uvm_map_teardown+0x117 uvm_map_addr_RBT_LEFT sys/uvm/uvm_map.h:-1 [inline] uvm_map_teardown(fffffd805ffd63f8) at uvm_map_teardown+0x117 sys/uvm/uvm_map.c:2486 exit1(ffff8000fffee2b0,0,0,1) at exit1+0x6fc sys/kern/kern_exit.c:260 sys_exit(ffff8000fffee2b0,ffff80003c4e7470,ffff80003c4e73c0) at sys_exit+0x1a sys/kern/kern_exit.c:-1 syscall(ffff80003c4e7470) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c4e7470) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:748 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x77af902dd500, 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}> ddb{0}> set $lines = 0 ddb{0}> set $maxwidth = 0 ddb{0}> show panic *cpu0: kernel diagnostic assertion "uvm_page_owner_locked_p(pg, TRUE)" failed: file "/syzkaller/managers/multicore/kernel/sys/uvm/uvm_page.c", line 1249 ddb{0}> trace db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438 panic(ffffffff8337f557) at panic+0x1e5 sys/kern/subr_prf.c:198 __assert(ffffffff833c2c5c,ffffffff833b983c,4e1,ffffffff833c2acd) at __assert+0x29 sys/kern/subr_prf.c:-1 uvm_pageunwire(fffffd80090f83a8) at uvm_pageunwire+0x1dd uvm_fault_unwire_locked(fffffd805ffd63f8,855f4d1b000,855f511a000) at uvm_fault_unwire_locked+0x35f sys/uvm/uvm_fault.c:1812 uvm_unmap_kill_entry_withlock(fffffd805ffd63f8,fffffd806b8ec258,0) at uvm_unmap_kill_entry_withlock+0x81 sys/uvm/uvm_map.c:1860 uvm_map_teardown(fffffd805ffd63f8) at uvm_map_teardown+0x117 uvm_map_addr_RBT_LEFT sys/uvm/uvm_map.h:-1 [inline] uvm_map_teardown(fffffd805ffd63f8) at uvm_map_teardown+0x117 sys/uvm/uvm_map.c:2486 exit1(ffff8000fffee2b0,0,0,1) at exit1+0x6fc sys/kern/kern_exit.c:260 sys_exit(ffff8000fffee2b0,ffff80003c4e7470,ffff80003c4e73c0) at sys_exit+0x1a sys/kern/kern_exit.c:-1 syscall(ffff80003c4e7470) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c4e7470) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:748 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x77af902dd500, count: -11 ddb{0}> show registers rdi 0 rsi 0x1 rbp 0xffff80003c4e7090 rbx 0xffffffff83858ddf cpu_info_full_primary+0x2ddf rdx 0 rcx 0xffff8000fffee2b0 rax 0xffffffff83857ff0 cpu_info_full_primary+0x1ff0 r8 0x101010101010101 r9 0x8080808080808080 r10 0x386d75d9600d3e00 r11 0x6c71056428b5ed8f r12 0xffffffff83858be0 cpu_info_full_primary+0x2be0 r13 0 r14 0 r15 0x1 rip 0xffffffff82ae9445 db_enter+0x25 cs 0x8 rflags 0x246 rsp 0xffff80003c4e7080 ss 0x10 db_enter+0x25: addq $0x8,%rsp ddb{0}> show proc PROC (syz-executor) tid=45827 pid=31824 tcnt=0 stat=onproc flags process=1008 proc=2000 runpri=83, usrpri=86, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0xffff8000fffee2b0 scnt=-1 ecnt=1 forw=0xffffffffffffffff, list=0xffff80003c021260,0xffff80003c020578 process=0xffff80002a3cd358 user=0xffff80003c4e2000, vmspace=0xfffffd805ffd63f8 estcpu=36, cpticks=2430, pctcpu=14.17, user=0, sys=2348, intr=78 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 73661 30301 15770 0 3 0x80 fsleep syz-executor 73661 396343 15770 0 2 0x4000000 syz-executor 44434 307413 35342 0 3 0x80 fsleep syz-executor 44434 22845 35342 0 3 0x4000080 kqread syz-executor 39372 510250 64839 0 3 0x80 fsleep syz-executor 39372 493974 64839 0 3 0x4000080 kqsel syz-executor 35714 502883 60214 0 3 0x2 uobjlk syz-executor 4425 121490 60214 0 3 0x82 wait syz-executor 458 462636 60214 0 3 0x82 wait syz-executor 60369 8140 0 0 3 0x14200 acct acct 15770 458504 60214 0 2 0xc82 syz-executor 35342 255641 60214 0 2 0xc82 syz-executor 70600 304517 1 0 3 0x100083 ttyin getty 19337 251753 0 0 3 0x14200 bored sosplice 89358 473087 60214 0 2 0x10000c82 syz-executor 31495 465941 60214 0 2 0xc82 syz-executor 64839 124255 60214 0 2 0xc82 syz-executor 60214 74510 55988 0 2 0x82 syz-executor 55988 405298 5243 0 3 0x10008a sigsusp ksh 5243 298133 53863 0 3 0x98 kqread sshd-session 53863 302573 93027 0 3 0x92 kqread sshd-session 93027 246288 1 0 3 0x88 kqread sshd 13896 428863 34688 74 3 0x1100092 bpf pflogd 34688 108354 1 0 3 0x80 sbwait pflogd 647 296767 54104 73 2 0x1100010 syslogd 54104 451501 1 0 3 0x100082 sbwait syslogd 43408 234267 1 0 3 0x100080 kqread resolvd 40177 305907 28457 77 3 0x100092 kqread dhcpleased 65731 356787 28457 77 3 0x100092 kqread dhcpleased 28457 152974 1 0 3 0x80 kqread dhcpleased 10011 258199 0 0 2 0x40014200 smr 68650 45440 0 0 2 0x14200 zerothread 28951 235536 0 0 3 0x14200 aiodoned aiodoned 44223 128727 0 0 3 0x14200 syncer update 89426 472485 0 0 3 0x14200 cleaner cleaner 58727 414576 0 0 3 0x14200 reaper reaper 7203 492647 0 0 3 0x14200 pgdaemon pagedaemon 87724 138934 0 0 3 0x14200 bored viomb 25851 461825 0 0 3 0x40014200 acpi0 acpi0 16051 134196 0 0 3 0x40014200 idle1 6524 204248 0 0 3 0x14200 bored softnet1 2546 217992 0 0 7 0x14200 softnet0 40961 208671 0 0 3 0x14200 smrbar systqmp 30116 49634 0 0 3 0x14200 bored systq 70891 67874 0 0 3 0x14200 tmoslp softclockmp 54636 74011 0 0 2 0x40014200 softclock 99200 120620 0 0 3 0x40014200 idle0 1 485123 0 0 3 0x80082 wait init 0 0 -1 0 3 0x10010200 scheduler swapper ddb{0}> show all locks CPU 0: exclusive mutex &uvm.pageqlock r = 0 (0xffffffff8396e270) #0 witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5f1 sys/kern/subr_witness.c:1160 #1 mtx_enter_try+0x1ad sys/kern/kern_lock.c:311 #2 mtx_enter+0x62 sys/kern/kern_lock.c:261 #3 uvm_fault_unwire_locked+0x34e sys/uvm/uvm_fault.c:1811 #4 uvm_unmap_kill_entry_withlock+0x81 sys/uvm/uvm_map.c:1860 #5 uvm_map_teardown+0x117 uvm_map_addr_RBT_LEFT sys/uvm/uvm_map.h:-1 [inline] #5 uvm_map_teardown+0x117 sys/uvm/uvm_map.c:2486 #6 exit1+0x6fc sys/kern/kern_exit.c:260 #7 sys_exit+0x1a sys/kern/kern_exit.c:-1 #8 syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] #8 syscall+0xb17 sys/arch/amd64/amd64/trap.c:748 #9 Xsyscall+0x128 Process 647 (syslogd) thread 0xffff80002a273768 (296767) exclusive rrwlock inode r = 0 (0xfffffd806e4a8c90) #0 witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5f1 sys/kern/subr_witness.c:1160 #1 rw_do_enter_write+0x419 sys/kern/kern_rwlock.c:320 #2 rrw_enter+0xc6 sys/kern/kern_rwlock.c:621 #3 VOP_LOCK+0xa3 sys/kern/vfs_vops.c:527 #4 vn_lock+0xa4 sys/kern/vfs_vnops.c:570 #5 sys_fsync+0x144 sys/kern/vfs_syscalls.c:2940 #6 syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] #6 syscall+0xb17 sys/arch/amd64/amd64/trap.c:748 #7 Xsyscall+0x128 Process 2546 (softnet0) thread 0xffff8000ffffe000 (217992) exclusive rwlock inet46 r = 0 (0xffff8000014291d0) #0 witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5f1 sys/kern/subr_witness.c:1160 #1 rw_do_enter_write+0x419 sys/kern/kern_rwlock.c:320 #2 in_pcbsolock+0xdb sys/netinet/in_pcb.c:631 #3 tcp_input_solocked+0xa9a sys/netinet/tcp_input.c:-1 #4 tcp_input_mlist+0x93 sys/netinet/tcp_input.c:-1 #5 if_input_process+0x22a sys/net/if.c:1029 #6 ifiq_process+0xcd sys/net/ifq.c:864 #7 taskq_thread+0x157 sys/kern/kern_task.c:446 #8 proc_trampoline+0x10 shared rwlock netlock r = 0 (0xffffffff83873740) #0 witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5f1 sys/kern/subr_witness.c:1160 #1 rw_do_enter_read+0x3e8 sys/kern/kern_rwlock.c:413 #2 if_input_process+0x17f sys/net/if.c:1024 #3 ifiq_process+0xcd sys/net/ifq.c:864 #4 taskq_thread+0x157 sys/kern/kern_task.c:446 #5 proc_trampoline+0x10 shared rwlock softnet0 r = 0 (0xffff80000002c078) #0 witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5f1 sys/kern/subr_witness.c:1160 #1 taskq_thread+0x12a sys/kern/kern_task.c:442 #2 proc_trampoline+0x10 Process 40961 (systqmp) thread 0xffff8000ffffe530 (208671) shared rwlock systqmp r = 0 (0xffffffff837e8e88) #0 witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5f1 sys/kern/subr_witness.c:1160 #1 taskq_thread+0x12a sys/kern/kern_task.c:442 #2 proc_trampoline+0x10 ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10217 11143K 11242K 166960K 12724 0 pcb 17 18K 19K 166960K 370 0 rtable 169 9K 9K 166960K 683 0 pf 36 18K 67486K 166960K 225 0 ifaddr 34 6K 8K 166960K 163 0 ifgroup 50 2K 2K 166960K 273 0 sysctl 4 1K 9K 166960K 12 0 counters 66 36K 38K 166960K 310 0 ioctlops 0 0K 4K 166960K 1796 0 iov 0 0K 28K 166960K 101 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1429 90K 90K 166960K 2559 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 616K 624K 166960K 25 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 0K 166960K 71 0 dirhash 12 2K 2K 166960K 51 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 16 57K 240K 166960K 1796 0 sigio 0 0K 0K 166960K 26 0 proc 72 115K 147K 166960K 821 0 subproc 65 4K 4K 166960K 130 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 295 0 in_multi 66 4K 7K 166960K 228 0 ether_multi 1 0K 0K 166960K 16 0 mrt 1 0K 0K 166960K 13 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 103 466K 466K 166960K 103 0 exec 0 0K 1K 166960K 611 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 240 170K 173K 166960K 17643 0 UVM aobj 29 2K 4K 166960K 38 0 pinsyscall 41 82K 99K 166960K 3171 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 69 0 NDP 11 0K 1K 166960K 115 0 temp 80 8656K 8735K 166960K 65635 0 kqueue 14 22K 34K 166960K 383 0 SYN cache 2 8K 16K 166960K 3 0 ddb{0}> show all pools Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle plcache 128 26 0 0 1 0 1 1 0 8 0 rtpcb 120 318 0 315 2 1 1 2 0 8 0 rtentry 176 188 0 125 5 1 4 5 0 8 0 unpcb 144 1058 0 1041 8 7 1 4 0 8 0 syncache 336 34 0 34 5 5 0 1 0 8 0 tcpqe 32 7 0 7 4 4 0 1 0 8 0 tcpcb 736 646 0 641 7 5 2 5 0 8 0 arp 136 20 0 10 1 0 1 1 0 8 0 ipq 40 1 0 1 1 1 0 1 0 8 0 ipqe 40 3 0 3 1 1 0 1 0 8 0 inpcb 328 2016 0 2007 21 19 2 10 0 8 0 nd6 152 32 0 22 1 0 1 1 0 8 0 pkpcb 40 7 0 7 4 4 0 1 0 8 0 kcovpl 48 14 0 7 1 0 1 1 0 8 0 ppxss 1192 95 0 94 3 2 1 1 0 8 0 pppxif 1504 17 0 17 5 5 0 1 0 8 0 pfstscr 40 1 0 0 1 0 1 1 0 8 0 pffrag 232 15 0 14 1 0 1 1 0 482 0 pffrnode 88 14 0 13 1 0 1 1 0 8 0 pffrent 40 33 0 32 1 0 1 1 0 8 0 pfosfp 40 1428 0 1005 5 0 5 5 0 8 0 pfosfpen 112 1428 0 714 21 0 21 21 0 8 0 pfrktable 1344 2 0 2 1 1 0 1 0 8 0 pfstitem 24 100 0 55 1 0 1 1 0 8 0 pfstkey 128 100 0 55 2 0 2 2 0 8 0 pfstate 384 98 0 55 6 0 6 6 0 8 0 pfrule 1344 24 0 18 2 1 1 2 0 8 0 art_heap8 4096 4 0 0 4 0 4 4 0 8 0 art_heap4 256 856 0 518 34 12 22 28 0 8 0 art_table 40 860 0 518 5 0 5 5 0 8 0 art_node 32 186 0 126 1 0 1 1 0 8 0 sysvmsgpl 40 23 0 17 1 0 1 1 0 8 0 semupl 112 3 0 3 2 2 0 1 0 8 0 semapl 112 65 0 55 1 0 1 1 0 8 0 shmpl 112 35 0 9 1 0 1 1 0 8 0 dirhash 1024 44 0 27 3 0 3 3 0 8 0 dino2pl 256 4623 0 3101 96 0 96 96 0 8 0 ffsino 296 4623 0 3101 118 0 118 118 0 8 0 nchpl 144 6930 0 5215 64 0 64 64 0 8 0 rtmask 32 14 0 14 5 4 1 1 0 8 1 uvmvnodes 80 5319 0 0 109 0 109 109 0 8 0 vnodes 216 5319 0 0 296 0 296 296 0 8 0 namei 1024 22478 0 22478 4 3 1 2 0 8 1 percpumem 16 170 0 122 1 0 1 1 0 8 0 kstatmem 264 170 0 146 4 2 2 3 0 8 0 scsiplug 72 21 0 21 5 5 0 1 0 8 0 scxspl 216 54536 0 54536 16 13 3 8 1 8 3 plimitpl 152 540 0 521 1 0 1 1 0 8 0 sigapl 424 2122 0 2072 9 1 8 9 0 8 0 knotepl 120 786 0 0 24 0 24 24 0 8 0 kqueuepl 224 860 0 849 10 9 1 5 0 8 0 pipepl 344 236 0 208 3 0 3 3 0 8 0 fdescpl 528 2079 0 2049 3 0 3 3 0 8 0 filepl 160 11986 0 11776 20 9 11 14 0 8 0 lockfpl 104 520 0 518 1 0 1 1 0 8 0 lockfspl 48 226 0 224 1 0 1 1 0 8 0 sessionpl 144 59 0 50 1 0 1 1 0 8 0 pgrppl 48 97 0 79 1 0 1 1 0 8 0 ucredpl 104 1615 0 1601 1 0 1 1 0 8 0 zombiepl 144 2306 0 2301 2 1 1 1 0 8 0 processpl 1232 2122 0 2072 6 0 6 6 0 8 0 procpl 664 4492 0 4439 8 2 6 8 0 8 0 sosppl 168 25 0 25 4 4 0 1 0 8 0 sockpl 752 3436 0 3407 29 24 5 14 0 8 0 mcl64k 65536 26 0 0 3 0 3 3 0 8 0 mcl16k 16384 14 0 0 2 0 2 2 0 8 0 mcl12k 12288 9 0 0 1 0 1 1 0 8 0 mcl9k 9216 5 0 0 1 0 1 1 0 8 0 mcl8k 8192 22 0 0 3 0 3 3 0 8 0 mcl4k 4096 138 0 0 17 0 17 17 0 8 0 mcl2k2 2112 2 0 0 1 0 1 1 0 8 0 mcl2k 2048 24 0 0 3 0 3 3 0 8 0 mtagpl 96 4 0 0 1 0 1 1 0 8 0 mbufpl 256 282 0 0 15 0 15 15 0 8 0 bufpl 280 23632 0 17489 440 1 439 440 0 8 0 anonpl 32 12776 0 0 103 0 103 103 0 246 0 amapchunkpl 152 72431 0 71549 72 38 34 35 0 158 0 amappl16 200 7502 0 7466 57 46 11 28 0 8 0 amappl15 192 11 0 10 1 0 1 1 0 8 0 amappl14 184 183 0 171 1 0 1 1 0 8 0 amappl13 176 7 0 7 1 1 0 1 0 8 0 amappl12 168 2859 0 2828 3 1 2 2 0 8 0 amappl11 160 51 0 37 1 0 1 1 0 8 0 amappl10 152 9 0 9 1 1 0 1 0 8 0 amappl9 144 257 0 257 1 1 0 1 0 8 0 amappl8 136 48 0 46 1 0 1 1 0 8 0 amappl7 128 152 0 140 1 0 1 1 0 8 0 amappl6 120 281 0 277 1 0 1 1 0 8 0 amappl5 112 166 0 157 1 0 1 1 0 8 0 amappl4 104 436 0 414 1 0 1 1 0 8 0 amappl3 96 10499 0 10397 3 0 3 3 0 8 0 amappl2 88 2535 0 2456 2 0 2 2 0 8 0 amappl1 80 22124 0 21526 16 1 15 15 0 8 0 amappl 88 16421 0 16254 5 0 5 5 0 92 0 dma16384 16384 1 0 1 1 1 0 1 0 8 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 7 0 7 2 2 0 1 0 8 0 dma128 128 253 0 253 1 1 0 1 0 8 0 dma64 64 8 0 8 3 3 0 1 0 8 0 dma32 32 7 0 7 1 1 0 1 0 8 0 dma16 16 19 0 18 1 0 1 1 0 8 0 aobjpl 72 37 0 9 1 0 1 1 0 8 0 uaddrrnd 24 2079 0 2048 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 2079 0 2048 1 0 1 1 0 8 0 vmmpekpl 168 19309 0 19253 4 1 3 3 0 8 0 vmmpepl 168 143830 0 141820 134 36 98 112 0 357 0 vmsppl 488 2078 0 2048 6 1 5 5 0 8 0 rwobjpl 80 46754 0 40454 131 2 129 129 0 8 0 pdppl 4096 4166 0 4096 140 68 72 84 0 8 2 pvpl 32 30685 0 0 247 0 247 247 0 265 0 pmappl 256 2078 0 2048 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 344 0 97 8 0 8 8 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:438 panic(ffffffff8337f557) at panic+0x1e5 sys/kern/subr_prf.c:198 __assert(ffffffff833c2c5c,ffffffff833b983c,4e1,ffffffff833c2acd) at __assert+0x29 sys/kern/subr_prf.c:-1 uvm_pageunwire(fffffd80090f83a8) at uvm_pageunwire+0x1dd uvm_fault_unwire_locked(fffffd805ffd63f8,855f4d1b000,855f511a000) at uvm_fault_unwire_locked+0x35f sys/uvm/uvm_fault.c:1812 uvm_unmap_kill_entry_withlock(fffffd805ffd63f8,fffffd806b8ec258,0) at uvm_unmap_kill_entry_withlock+0x81 sys/uvm/uvm_map.c:1860 uvm_map_teardown(fffffd805ffd63f8) at uvm_map_teardown+0x117 uvm_map_addr_RBT_LEFT sys/uvm/uvm_map.h:-1 [inline] uvm_map_teardown(fffffd805ffd63f8) at uvm_map_teardown+0x117 sys/uvm/uvm_map.c:2486 exit1(ffff8000fffee2b0,0,0,1) at exit1+0x6fc sys/kern/kern_exit.c:260 sys_exit(ffff8000fffee2b0,ffff80003c4e7470,ffff80003c4e73c0) at sys_exit+0x1a sys/kern/kern_exit.c:-1 syscall(ffff80003c4e7470) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c4e7470) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:748 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x77af902dd500, count: -11 ddb{0}> machine ddbcpu 1 Stopped at x86_ipi_db+0x27: addq $0x8,%rsp x86_ipi_db(ffff8000299edff0) at x86_ipi_db+0x27 sys/arch/amd64/amd64/db_interface.c:394 x86_ipi_handler() at x86_ipi_handler+0xd9 sys/arch/amd64/amd64/ipi.c:106 Xresume_lapic_ipi() at Xresume_lapic_ipi+0x27 __mp_release_all(ffffffff839cf990) at __mp_release_all+0xd8 sys/kern/kern_lock.c:215 msleep_nsec(ffff80000002c000,ffff80000002c018,20,ffffffff833e335a,ffffffffffffffff) at msleep_nsec+0x1e1 sys/kern/kern_synch.c:-1 taskq_next_work(ffff80000002c000,ffff80002a2207a8) at taskq_next_work+0x8e sys/kern/kern_task.c:399 taskq_thread(ffff80000002c000) at taskq_thread+0x1d5 sys/kern/kern_task.c:439 end trace frame: 0x0, count: 8 ddb{1}> trace x86_ipi_db(ffff8000299edff0) at x86_ipi_db+0x27 sys/arch/amd64/amd64/db_interface.c:394 x86_ipi_handler() at x86_ipi_handler+0xd9 sys/arch/amd64/amd64/ipi.c:106 Xresume_lapic_ipi() at Xresume_lapic_ipi+0x27 __mp_release_all(ffffffff839cf990) at __mp_release_all+0xd8 sys/kern/kern_lock.c:215 msleep_nsec(ffff80000002c000,ffff80000002c018,20,ffffffff833e335a,ffffffffffffffff) at msleep_nsec+0x1e1 sys/kern/kern_synch.c:-1 taskq_next_work(ffff80000002c000,ffff80002a2207a8) at taskq_next_work+0x8e sys/kern/kern_task.c:399 taskq_thread(ffff80000002c000) at taskq_thread+0x1d5 sys/kern/kern_task.c:439 end trace frame: 0x0, count: -7