panic: kernel diagnostic assertion "cifp != NULL" failed: file "/syzkaller/managers/multicore/kernel/sys/net/route.c", line 1078 Stopped at db_enter+0x25: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND *156601 86058 0 0x2 0 0K ifconfig 338354 96888 0 0x14000 0x200 1 reaper db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff830e37cd) at panic+0x1e5 sys/kern/subr_prf.c:198 __assert(ffffffff8309b04e,ffffffff83016950,436,ffffffff8300d6b9) at __assert+0x29 rtrequest(1,ffff80002a0bac58,4,ffff80002a0bad00,0) at rtrequest+0xdce sys/net/route.c:1078 rt_ifa_add(ffff8000015f8e00,840100,ffff8000015f8e58,0) at rt_ifa_add+0x22e sys/net/route.c:1273 in_ifinit(ffff8000015bf800,ffff8000015f8e00,ffff80002a0baf70,1) at in_ifinit+0x4bd in_insert_prefix sys/netinet/in.c:770 [inline] in_ifinit(ffff8000015bf800,ffff8000015f8e00,ffff80002a0baf70,1) at in_ifinit+0x4bd sys/netinet/in.c:703 in_ioctl_change_ifaddr(8040691a,ffff80002a0baf60,ffff8000015bf800) at in_ioctl_change_ifaddr+0x92c sys/netinet/in.c:504 ifioctl(ffff800001588a70,8040691a,ffff80002a0baf60,ffff80002a0b42d0) at ifioctl+0x1571 pru_control sys/sys/protosw.h:355 [inline] ifioctl(ffff800001588a70,8040691a,ffff80002a0baf60,ffff80002a0b42d0) at ifioctl+0x1571 sys/net/if.c:2449 sys_ioctl(ffff80002a0b42d0,ffff80002a0bb140,ffff80002a0bb090) at sys_ioctl+0x67c syscall(ffff80002a0bb140) at syscall+0xbb6 mi_syscall sys/sys/syscall_mi.h:179 [inline] syscall(ffff80002a0bb140) at syscall+0xbb6 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7a66a1796d20, 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 "cifp != NULL" failed: file "/syzkaller/managers/multicore/kernel/sys/net/route.c", line 1078 ddb{0}> trace db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff830e37cd) at panic+0x1e5 sys/kern/subr_prf.c:198 __assert(ffffffff8309b04e,ffffffff83016950,436,ffffffff8300d6b9) at __assert+0x29 rtrequest(1,ffff80002a0bac58,4,ffff80002a0bad00,0) at rtrequest+0xdce sys/net/route.c:1078 rt_ifa_add(ffff8000015f8e00,840100,ffff8000015f8e58,0) at rt_ifa_add+0x22e sys/net/route.c:1273 in_ifinit(ffff8000015bf800,ffff8000015f8e00,ffff80002a0baf70,1) at in_ifinit+0x4bd in_insert_prefix sys/netinet/in.c:770 [inline] in_ifinit(ffff8000015bf800,ffff8000015f8e00,ffff80002a0baf70,1) at in_ifinit+0x4bd sys/netinet/in.c:703 in_ioctl_change_ifaddr(8040691a,ffff80002a0baf60,ffff8000015bf800) at in_ioctl_change_ifaddr+0x92c sys/netinet/in.c:504 ifioctl(ffff800001588a70,8040691a,ffff80002a0baf60,ffff80002a0b42d0) at ifioctl+0x1571 pru_control sys/sys/protosw.h:355 [inline] ifioctl(ffff800001588a70,8040691a,ffff80002a0baf60,ffff80002a0b42d0) at ifioctl+0x1571 sys/net/if.c:2449 sys_ioctl(ffff80002a0b42d0,ffff80002a0bb140,ffff80002a0bb090) at sys_ioctl+0x67c syscall(ffff80002a0bb140) at syscall+0xbb6 mi_syscall sys/sys/syscall_mi.h:179 [inline] syscall(ffff80002a0bb140) at syscall+0xbb6 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7a66a1796d20, count: -11 ddb{0}> show registers rdi 0 rsi 0x1 rbp 0xffff80002a0baa50 rbx 0xffffffff83468dcf cpu_info_full_primary+0x2dcf rdx 0 rcx 0xffff80002a0b42d0 rax 0xffffffff83467ff0 cpu_info_full_primary+0x1ff0 r8 0 r9 0x8080808080808080 r10 0x2cd11f236f76eb6e r11 0xa8be3c93fb308971 r12 0xffffffff83468bd0 cpu_info_full_primary+0x2bd0 r13 0 r14 0 r15 0x1 rip 0xffffffff82efcef5 db_enter+0x25 cs 0x8 rflags 0x246 rsp 0xffff80002a0baa40 ss 0x10 db_enter+0x25: addq $0x8,%rsp ddb{0}> show proc PROC (ifconfig) tid=156601 pid=86058 tcnt=1 stat=onproc flags process=2 proc=0 runpri=63, usrpri=86, slppri=36, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff80002a0b4048,0xffffffff8350c8a0 process=0xffff8000fffee8e8 user=0xffff80002a0b6000, vmspace=0xfffffd806b7cb898 estcpu=36, cpticks=1, pctcpu=0.0, user=0, sys=1, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND *86058 156601 78035 0 7 0x2 ifconfig 85927 277422 31905 0 3 0x10008a sigsusp sh 78035 196333 24018 0 3 0x10008a sigsusp sh 37382 71249 81256 0 3 0x2 clonelk ifconfig 81256 174781 74506 0 3 0x10008a sigsusp sh 74506 415583 44817 0 3 0x82 wait syz-executor 31905 447114 44817 0 3 0x82 wait syz-executor 24018 129833 44817 0 3 0x82 wait syz-executor 59329 403469 44817 0 3 0x82 piperd syz-executor 96407 343556 1 0 3 0x100083 ttyin getty 58087 408153 0 0 3 0x14200 acct acct 95140 61381 44817 0 3 0x82 piperd syz-executor 59886 351277 44817 0 3 0x82 piperd syz-executor 88489 503778 44817 0 3 0x82 piperd syz-executor 49090 423466 18080 0 3 0x82 netio sshd-session 70146 68065 0 0 3 0x14200 bored sosplice 44817 489638 67629 0 3 0x82 wait syz-executor 67629 97376 72106 0 3 0x10008a sigsusp ksh 72106 149524 46267 0 3 0x98 kqread sshd-session 46267 367305 18080 0 3 0x92 kqread sshd-session 18080 349999 1 0 3 0x88 kqread sshd 44937 313077 3058 74 3 0x1100092 bpf pflogd 3058 497524 1 0 3 0x80 sbwait pflogd 95588 487490 95059 73 2 0x1100010 syslogd 95059 188360 1 0 3 0x100082 sbwait syslogd 45508 34677 1 0 3 0x100080 kqread resolvd 52303 235086 15198 77 3 0x100092 kqread dhcpleased 40381 493182 15198 77 3 0x100092 kqread dhcpleased 15198 276386 1 0 3 0x80 kqread dhcpleased 12545 175174 0 0 3 0x14200 bored smr 27582 97071 0 0 3 0x14200 pgzero zerothread 46528 315722 0 0 3 0x14200 aiodoned aiodoned 58007 207518 0 0 3 0x14200 syncer update 87354 421668 0 0 3 0x14200 cleaner cleaner 96888 338354 0 0 7 0x14200 reaper 22805 301276 0 0 3 0x14200 pgdaemon pagedaemon 33355 514204 0 0 3 0x14200 bored viomb 9387 341700 0 0 3 0x40014200 acpi0 acpi0 78551 521825 0 0 3 0x40014200 idle1 85936 234721 0 0 3 0x14200 bored softnet3 84287 403401 0 0 3 0x14200 bored softnet2 24702 258244 0 0 3 0x14200 bored softnet1 88201 15639 0 0 3 0x14200 bored softnet0 10531 52364 0 0 3 0x14200 bored systqmp 42251 279412 0 0 3 0x14200 bored systq 93769 116057 0 0 3 0x14200 tmoslp softclockmp 52777 189019 0 0 3 0x40014200 tmoslp softclock 39223 316273 0 0 3 0x40014200 idle0 1 271974 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks CPU 1: exclusive mutex vmmpepl r = 0 (0xffffffff835836c0) #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 pool_put+0x9f sys/kern/subr_pool.c:797 #4 uvm_unmap_detach+0x1b4 #5 uvm_map_teardown+0x35e sys/uvm/uvm_map.c:2518 #6 uvmspace_free+0xcd sys/uvm/uvm_map.c:3422 #7 reaper+0x246 sys/kern/kern_exit.c:480 #8 proc_trampoline+0x10 Process 86058 (ifconfig) thread 0xffff80002a0b42d0 (156601) exclusive kernel_lock &kernel_lock r = 1 (0xffffffff834febe8) #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+0x658 sys/kern/sched_bsd.c:460 #3 yield+0x6a sys/kern/sched_bsd.c:320 #4 malloc+0xe5 sys/kern/kern_malloc.c:170 #5 in_ioctl_change_ifaddr+0x4db sys/netinet/in.c:460 #6 ifioctl+0x1571 pru_control sys/sys/protosw.h:355 [inline] #6 ifioctl+0x1571 sys/net/if.c:2449 #7 sys_ioctl+0x67c #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 exclusive rwlock netlock r = 0 (0xffffffff834ee9d0) #0 witness_lock+0x5bb stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5bb sys/kern/subr_witness.c:1155 #1 in_ioctl_change_ifaddr+0xbe sys/netinet/in.c:413 #2 ifioctl+0x1571 pru_control sys/sys/protosw.h:355 [inline] #2 ifioctl+0x1571 sys/net/if.c:2449 #3 sys_ioctl+0x67c #4 syscall+0xbb6 mi_syscall sys/sys/syscall_mi.h:179 [inline] #4 syscall+0xbb6 sys/arch/amd64/amd64/trap.c:577 #5 Xsyscall+0x128 Process 95588 (syslogd) thread 0xffff8000ffffdbe8 (487490) exclusive rrwlock inode r = 0 (0xfffffd806e15b1b0) #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 sys_fsync+0x152 sys/kern/vfs_syscalls.c:2926 #6 syscall+0xaf8 mi_syscall sys/sys/syscall_mi.h:179 [inline] #6 syscall+0xaf8 sys/arch/amd64/amd64/trap.c:577 #7 Xsyscall+0x128 ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10203 14212K 14663K 166960K 13180 0 pcb 17 18K 20K 166960K 391 0 rtable 171 6K 8K 166960K 2714 0 pf 35 17K 25K 166960K 253 0 ifaddr 33 6K 8K 166960K 364 0 ifgroup 51 2K 2K 166960K 409 0 sysctl 3 0K 0K 166960K 7 0 counters 62 36K 36K 166960K 244 0 ioctlops 0 0K 4K 166960K 1708 0 iov 0 0K 32K 166960K 128 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1457 92K 92K 166960K 3617 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 20K 28K 166960K 18 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 1K 166960K 135 0 dirhash 15 2K 3K 166960K 36 0 ACPI 1690 195K 286K 166960K 12418 0 file desc 15 53K 89K 166960K 2555 0 sigio 0 0K 0K 166960K 24 0 proc 86 116K 140K 166960K 2721 0 subproc 104 6K 7K 166960K 1081 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 186 0 in_multi 57 4K 7K 166960K 939 0 ether_multi 1 0K 0K 166960K 12 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 103 466K 466K 166960K 103 0 exec 0 0K 1K 166960K 1559 0 pfkey data 0 0K 0K 166960K 1 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 197 72K 95K 166960K 21666 0 UVM aobj 176 6K 7K 166960K 184 0 pinsyscall 42 84K 104K 166960K 5560 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 63 0 NDP 11 0K 1K 166960K 263 0 temp 81 6824K 6895K 166960K 108249 0 kqueue 13 20K 30K 166960K 277 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 24 0 0 1 0 1 1 0 8 0 rtpcb 120 294 0 291 2 1 1 2 0 8 0 rtentry 112 942 0 870 4 1 3 4 0 8 0 unpcb 144 1316 0 1299 13 12 1 5 0 8 0 syncache 336 13 0 13 8 8 0 1 0 8 0 tcpqe 32 6 0 6 4 4 0 1 0 8 0 tcpcb 808 721 0 714 34 33 1 14 0 8 0 arp 120 169 0 151 1 0 1 1 0 8 0 inpcb 336 2441 0 2427 40 38 2 13 0 8 0 nd6 136 246 0 235 1 0 1 1 0 8 0 pkpcb 40 11 0 11 8 8 0 1 0 8 0 kcovpl 48 83 0 75 1 0 1 1 0 8 0 ppxss 1168 7 0 7 6 6 0 1 0 8 0 pffrag 232 5 0 5 2 2 0 1 0 482 0 pffrnode 88 4 0 4 2 2 0 1 0 8 0 pffrent 40 12 0 12 7 7 0 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 4 0 1 1 0 1 1 0 8 0 pfanchor 1288 2 0 0 1 0 1 1 0 8 0 pfstitem 24 240 0 197 1 0 1 1 0 8 0 pfstkey 128 246 0 203 2 0 2 2 0 8 0 pfstate 376 242 0 200 7 1 6 6 0 8 0 pfrule 1344 29 0 20 2 1 1 2 0 8 0 art_heap8 4096 3 0 0 3 0 3 3 0 8 0 art_heap4 256 3706 0 3434 31 4 27 28 0 8 2 art_table 32 3709 0 3434 4 0 4 4 0 8 0 art_node 16 934 0 870 1 0 1 1 0 8 0 sysvmsgpl 40 20 0 13 1 0 1 1 0 8 0 semapl 112 129 0 119 1 0 1 1 0 8 0 shmpl 112 181 0 8 5 0 5 5 0 8 0 dirhash 1024 33 0 14 3 0 3 3 0 8 0 dino2pl 256 4328 0 2682 104 0 104 104 0 8 0 ffsino 272 4328 0 2682 110 0 110 110 0 8 0 nchpl 144 6495 0 4718 67 0 67 67 0 8 0 uvmvnodes 80 6067 0 0 124 0 124 124 0 8 0 vnodes 216 6067 0 0 338 0 338 338 0 8 0 namei 1024 29202 0 29202 8 7 1 3 0 8 1 percpumem 16 136 0 91 1 0 1 1 0 8 0 pfiaddrpl 120 1 0 0 1 0 1 1 0 8 0 kstatmem 264 204 0 182 2 0 2 2 0 8 0 scsiplug 72 8 0 8 4 4 0 1 0 8 0 scxspl 216 52747 0 52747 14 13 1 8 1 8 1 plimitpl 152 477 0 460 1 0 1 1 0 8 0 sigapl 424 2735 0 2684 11 4 7 9 0 8 0 futexpl 64 20755 0 20755 9 8 1 1 0 8 1 knotepl 120 712 0 0 17 0 17 17 0 8 0 kqueuepl 216 739 0 730 17 16 1 5 0 8 0 pipepl 320 556 0 528 8 5 3 8 0 8 0 fdescpl 496 2694 0 2664 9 4 5 5 0 8 0 filepl 152 15135 0 14892 55 44 11 21 0 8 0 lockfpl 104 907 0 905 3 2 1 2 0 8 0 lockfspl 48 336 0 334 1 0 1 1 0 8 0 sessionpl 144 105 0 95 1 0 1 1 0 8 0 pgrppl 48 199 0 181 1 0 1 1 0 8 0 ucredpl 104 2310 0 2297 1 0 1 1 0 8 0 zombiepl 144 3397 0 3395 1 0 1 1 0 8 0 processpl 1160 2735 0 2684 7 2 5 6 0 8 0 procpl 648 5174 0 5123 10 4 6 8 0 8 0 srpgc 96 6 0 6 2 2 0 1 0 8 0 sosppl 168 6 0 6 5 5 0 1 0 8 0 sockpl 664 4082 0 4050 52 48 4 20 0 8 0 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 mcl9k 9216 1 0 0 1 0 1 1 0 8 0 mcl8k 8192 4 0 0 1 0 1 1 0 8 0 mcl4k 4096 4 0 0 1 0 1 1 0 8 0 mcl2k 2048 280 0 0 32 1 31 32 0 8 0 mtagpl 96 21 0 0 1 0 1 1 0 8 0 mbufpl 256 451 0 0 20 0 20 20 0 8 0 bufpl 280 12344 0 6195 442 0 442 442 0 8 0 anonpl 24 449246 0 445758 132 55 77 77 0 185 26 amapchunkpl 152 69423 0 69085 63 29 34 39 0 158 12 amappl16 200 8838 0 8824 70 55 15 15 0 8 11 amappl15 192 12 0 12 1 1 0 1 0 8 0 amappl14 184 275 0 261 1 0 1 1 0 8 0 amappl13 176 11 0 11 2 2 0 1 0 8 0 amappl12 168 4510 0 4478 3 1 2 2 0 8 0 amappl11 160 56 0 42 1 0 1 1 0 8 0 amappl10 152 68 0 68 1 1 0 1 0 8 0 amappl9 144 151 0 151 2 2 0 1 0 8 0 amappl8 136 21 0 18 1 0 1 1 0 8 0 amappl7 128 263 0 249 1 0 1 1 0 8 0 amappl6 120 895 0 889 1 0 1 1 0 8 0 amappl5 112 443 0 426 1 0 1 1 0 8 0 amappl4 104 560 0 539 1 0 1 1 0 8 0 amappl3 96 13421 0 13343 4 0 4 4 0 8 0 amappl2 88 1770 0 1688 2 0 2 2 0 8 0 amappl1 80 20699 0 20040 21 5 16 17 0 8 0 amappl 88 20590 0 20464 5 0 5 5 0 92 0 dma65536 65536 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 dma512 512 1 0 1 1 1 0 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 2 2 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 72 183 0 8 4 0 4 4 0 8 0 uaddrrnd 24 2694 0 2664 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 2694 0 2664 1 0 1 1 0 8 0 vmmpekpl 168 24151 0 24092 5 1 4 4 0 8 0 vmmpepl 168 172425 0 170697 154 53 101 105 0 357 6 vmsppl 440 2693 0 2663 6 2 4 5 0 8 0 rwobjpl 56 56944 0 49676 109 3 106 107 0 8 0 pdppl 4096 5395 0 5326 210 137 73 83 0 8 4 pvpl 32 43410 0 0 351 0 351 351 0 265 0 pmappl 248 2693 0 2663 3 0 3 3 0 8 0 extentpl 40 56 0 38 1 0 1 1 0 8 0 phpool 112 619 0 239 12 0 12 12 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(ffffffff830e37cd) at panic+0x1e5 sys/kern/subr_prf.c:198 __assert(ffffffff8309b04e,ffffffff83016950,436,ffffffff8300d6b9) at __assert+0x29 rtrequest(1,ffff80002a0bac58,4,ffff80002a0bad00,0) at rtrequest+0xdce sys/net/route.c:1078 rt_ifa_add(ffff8000015f8e00,840100,ffff8000015f8e58,0) at rt_ifa_add+0x22e sys/net/route.c:1273 in_ifinit(ffff8000015bf800,ffff8000015f8e00,ffff80002a0baf70,1) at in_ifinit+0x4bd in_insert_prefix sys/netinet/in.c:770 [inline] in_ifinit(ffff8000015bf800,ffff8000015f8e00,ffff80002a0baf70,1) at in_ifinit+0x4bd sys/netinet/in.c:703 in_ioctl_change_ifaddr(8040691a,ffff80002a0baf60,ffff8000015bf800) at in_ioctl_change_ifaddr+0x92c sys/netinet/in.c:504 ifioctl(ffff800001588a70,8040691a,ffff80002a0baf60,ffff80002a0b42d0) at ifioctl+0x1571 pru_control sys/sys/protosw.h:355 [inline] ifioctl(ffff800001588a70,8040691a,ffff80002a0baf60,ffff80002a0b42d0) at ifioctl+0x1571 sys/net/if.c:2449 sys_ioctl(ffff80002a0b42d0,ffff80002a0bb140,ffff80002a0bb090) at sys_ioctl+0x67c syscall(ffff80002a0bb140) at syscall+0xbb6 mi_syscall sys/sys/syscall_mi.h:179 [inline] syscall(ffff80002a0bb140) at syscall+0xbb6 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7a66a1796d20, count: -11 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(ffffffff834fe9e0) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:113 [inline] __mp_lock(ffffffff834fe9e0) at __mp_lock+0x192 sys/kern/kern_lock.c:144 uvn_detach(fffffd806ed14ec0) at uvn_detach+0x28 sys/uvm/uvm_vnode.c:310 uvm_unmap_detach(ffff800029fe57b0,0) at uvm_unmap_detach+0x15e sys/uvm/uvm_map.c:1364 uvm_map_teardown(fffffd806b7cba50) at uvm_map_teardown+0x35e sys/uvm/uvm_map.c:2518 uvmspace_free(fffffd806b7cba50) at uvmspace_free+0xcd sys/uvm/uvm_map.c:3422 reaper(ffff800029fd8cb0) at reaper+0x246 sys/kern/kern_exit.c:480 end trace frame: 0x0, count: 6 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(ffffffff834fe9e0) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:113 [inline] __mp_lock(ffffffff834fe9e0) at __mp_lock+0x192 sys/kern/kern_lock.c:144 uvn_detach(fffffd806ed14ec0) at uvn_detach+0x28 sys/uvm/uvm_vnode.c:310 uvm_unmap_detach(ffff800029fe57b0,0) at uvm_unmap_detach+0x15e sys/uvm/uvm_map.c:1364 uvm_map_teardown(fffffd806b7cba50) at uvm_map_teardown+0x35e sys/uvm/uvm_map.c:2518 uvmspace_free(fffffd806b7cba50) at uvmspace_free+0xcd sys/uvm/uvm_map.c:3422 reaper(ffff800029fd8cb0) at reaper+0x246 sys/kern/kern_exit.c:480 end trace frame: 0x0, count: -9