panic: free: non-malloced addr 0x2000 type ip_moptions Stopped at db_enter+0x25: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND 29981 18577 32767 0x10 0 0 syz-executor db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438 panic(ffffffff8346620e) at panic+0x1e5 sys/kern/subr_prf.c:198 free(2000,35,0) at free+0x6b7 sys/kern/kern_malloc.c:426 ip_freemoptions(ffff800000c40880) at ip_freemoptions+0xea sys/netinet/ip_output.c:1744 in_pcbdetach(fffff6006cf40528) at in_pcbdetach+0xec sys/netinet/in_pcb.c:605 udp_detach(ffff800010fdf4b0) at udp_detach+0x5a sys/netinet/udp_usrreq.c:1158 soclose(ffff800010fdf4b0,0) at soclose+0xb0 pru_detach sys/sys/protosw.h:281 [inline] soclose(ffff800010fdf4b0,0) at soclose+0xb0 sys/kern/uipc_socket.c:403 soo_close(fffff6007dc36420,ffff80003c3d5a18) at soo_close+0x56 sys/kern/sys_socket.c:-1 fdrop(fffff6007dc36420,ffff80003c3d5a18) at fdrop+0x121 sys/kern/kern_descrip.c:1281 closef(fffff6007dc36420,ffff80003c3d5a18) at closef+0x192 sys/kern/kern_descrip.c:1265 fdfree(ffff80003c3d5a18) at fdfree+0x116 sys/kern/kern_descrip.c:1196 exit1(ffff80003c3d5a18,0,0,1) at exit1+0x595 sys/kern/kern_exit.c:215 sys_exit(ffff80003c3d5a18,ffff80002a34e620,ffff80002a34e570) at sys_exit+0x1a sys/kern/kern_exit.c:-1 syscall(ffff80002a34e620) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80002a34e620) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:791 end trace frame: 0xffff80002a34e6a0, count: 0 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: free: non-malloced addr 0x2000 type ip_moptions ddb{1}> show kasan No such command ddb{1}> trace db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438 panic(ffffffff8346620e) at panic+0x1e5 sys/kern/subr_prf.c:198 free(2000,35,0) at free+0x6b7 sys/kern/kern_malloc.c:426 ip_freemoptions(ffff800000c40880) at ip_freemoptions+0xea sys/netinet/ip_output.c:1744 in_pcbdetach(fffff6006cf40528) at in_pcbdetach+0xec sys/netinet/in_pcb.c:605 udp_detach(ffff800010fdf4b0) at udp_detach+0x5a sys/netinet/udp_usrreq.c:1158 soclose(ffff800010fdf4b0,0) at soclose+0xb0 pru_detach sys/sys/protosw.h:281 [inline] soclose(ffff800010fdf4b0,0) at soclose+0xb0 sys/kern/uipc_socket.c:403 soo_close(fffff6007dc36420,ffff80003c3d5a18) at soo_close+0x56 sys/kern/sys_socket.c:-1 fdrop(fffff6007dc36420,ffff80003c3d5a18) at fdrop+0x121 sys/kern/kern_descrip.c:1281 closef(fffff6007dc36420,ffff80003c3d5a18) at closef+0x192 sys/kern/kern_descrip.c:1265 fdfree(ffff80003c3d5a18) at fdfree+0x116 sys/kern/kern_descrip.c:1196 exit1(ffff80003c3d5a18,0,0,1) at exit1+0x595 sys/kern/kern_exit.c:215 sys_exit(ffff80003c3d5a18,ffff80002a34e620,ffff80002a34e570) at sys_exit+0x1a sys/kern/kern_exit.c:-1 syscall(ffff80002a34e620) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80002a34e620) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:791 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7addca6cc330, count: -15 ddb{1}> show registers rdi 0 rsi 0x1 rbp 0xffff80002a34e110 rbx 0xffff80002999ee07 rdx 0 rcx 0xffff80003c3d5a18 rax 0xffff80002999dff0 r8 0x101010101010101 r9 0x8080808080808080 r10 0xa80e347a10e1c8f1 r11 0xf680efa187fd0586 r12 0xffff80002999ec08 r13 0 r14 0 r15 0x1 rip 0xffffffff810dce45 db_enter+0x25 cs 0x8 rflags 0x246 rsp 0xffff80002a34e100 ss 0x10 db_enter+0x25: addq $0x8,%rsp ddb{1}> show proc PROC (syz-executor) tid=445833 pid=29353 tcnt=0 stat=onproc flags process=1018 proc=2000 runpri=32, usrpri=71, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0xffff80003c3d5a18 scnt=-1 ecnt=1 forw=0xffffffffffffffff, list=0xffff800045fe9ca8,0xffff80003c3d4d30 process=0xffff800045fe5360 user=0xffff80002a349000, vmspace=0xfffff6006ce18218 estcpu=21, cpticks=8, pctcpu=0.0, user=0, sys=1, intr=0 ddb{1}> ps PID TID PPID UID S PRLAGS PFLAGS WAIT COMMAND 42736 121154 83273 32767 3 0x1010 0x2000 suspend syz-executor 42736 411755 83273 32767 2 0x1010 0x4080000 syz-executor 18577 29981 72160 32767 7 0x10 0 syz-executor 18577 353374 72160 32767 3 0x10 0x4000000 biowait syz-executor 47284 307253 18404 32767 3 0x10 0x80 nanoslp syz-executor 47284 464161 18404 32767 3 0x10 0x4000080 pipewr syz-executor 47284 416638 18404 32767 2 0x10 0x4000000 syz-executor 47284 15873 18404 32767 3 0x10 0x4000080 fsleep syz-executor 3166 127081 20046 32767 3 0x10 0x80 nanoslp syz-executor 3166 96634 20046 32767 3 0x10 0x4000080 lockf syz-executor 3166 485622 20046 32767 3 0x10 0x4000080 fsleep syz-executor 97010 184894 78600 0 3 0x100002 0x80 sbwait arp 78600 327292 46481 0 3 0x100002 0x88 sigsusp sh 95237 394821 50863 32767 3 0x10 0x80 nanoslp syz-executor 72160 522234 70951 32767 3 0x10 0x80 nanoslp syz-executor 18404 204182 22649 32767 3 0x10 0x80 nanoslp syz-executor 20046 40223 24980 32767 3 0x10 0x80 nanoslp syz-executor 46481 450020 51164 0 3 0 0x80 wait syz-executor 83273 147503 37996 32767 3 0x10 0x80 nanoslp syz-executor 42818 312213 95068 32767 3 0x10 0 biowait syz-executor 22649 287721 97725 0 3 0x2 0x80 wait syz-executor 24980 381365 97725 0 3 0x2 0x80 wait syz-executor 50863 195009 97725 0 3 0x2 0x80 wait syz-executor 70951 18776 97725 0 3 0x2 0x80 wait syz-executor 51164 76543 97725 0 3 0x2 0x80 wait syz-executor 95068 78800 97725 0 3 0x2 0x80 wait syz-executor 37996 130906 97725 0 3 0x2 0x80 wait syz-executor 97725 474927 36946 0 3 0x2 0x80 nanoslp syz-executor 36946 412143 22745 0 3 0x100002 0x88 sigsusp ksh 22745 396959 44601 0 3 0x10 0x88 kqread sshd-session 44601 207945 28249 0 3 0x12 0x80 kqread sshd-session 73498 462055 1 0 3 0x100003 0x80 ttyin getty 28249 190518 1 0 3 0 0x88 kqread sshd 69981 213017 82079 73 3 0x1100010 0x80 kqread syslogd 82079 510125 1 0 3 0x100002 0x80 sbwait syslogd 82996 66662 1 0 3 0x100000 0x80 kqread resolvd 40723 193818 73990 77 3 0x100012 0x80 kqread dhcpleased 48992 368191 73990 77 3 0x100012 0x80 kqread dhcpleased 73990 521051 1 0 3 0 0x80 kqread dhcpleased 33618 470306 0 0 3 0x14000 0x200 bored smr 91570 253884 0 0 3 0x14000 0x200 pgzero zerothread 4128 352876 0 0 3 0x14000 0x200 aiodoned aiodoned 40191 357586 0 0 3 0x14000 0x200 syncer update 74946 15451 0 0 3 0x14000 0x200 cleaner cleaner 95057 295145 0 0 3 0x14000 0x200 reaper reaper 93532 213660 0 0 3 0x14000 0x200 pgdaemon pagedaemon 81710 415085 0 0 3 0x14000 0x200 bored viomb 97721 102727 0 0 3 0x14000 0x40000200 acpi0 acpi0 41137 238000 0 0 3 0x14000 0x40000200 idle1 87630 180189 0 0 3 0x14000 0x200 bored softnet1 87760 417634 0 0 3 0x14000 0x200 bored softnet0 30922 158743 0 0 3 0x14000 0x200 bored systqmp 42794 291607 0 0 3 0x14000 0x200 bored systq 54757 498368 0 0 3 0x14000 0x200 tmoslp softclockmp 45820 249311 0 0 3 0x14000 0x40000200 tmoslp softclock 47270 421158 0 0 3 0x14000 0x40000200 idle0 1 448305 0 0 3 0x2 0x80 wait init 0 0 -1 0 3 0x10000 0x200 scheduler swapper ddb{1}> show all locks Process 18577 (syz-executor) thread 0xffff80002a23c7e0 (353374) exclusive rrwlock inode r = 0 (0xfffff600707ead80) #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+0xbd sys/kern/vfs_vops.c:527 #4 ufs_ihashins+0x4f ufs_ihash sys/ufs/ufs/ufs_ihash.c:-1 [inline] #4 ufs_ihashins+0x4f sys/ufs/ufs/ufs_ihash.c:150 #5 ffs_vget+0x187 sys/ufs/ffs/ffs_vfsops.c:1232 #6 ffs_inode_alloc+0x279 sys/ufs/ffs/ffs_alloc.c:393 #7 ufs_mkdir+0xfc sys/ufs/ufs/ufs_vnops.c:1112 #8 VOP_MKDIR+0x101 sys/kern/vfs_vops.c:394 #9 domkdirat+0x179 sys/kern/vfs_syscalls.c:3063 #10 syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] #10 syscall+0xb17 sys/arch/amd64/amd64/trap.c:791 #11 Xsyscall+0x128 exclusive rrwlock inode r = 0 (0xfffff6006f798928) #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+0xbd sys/kern/vfs_vops.c:527 #4 vn_lock+0xa4 sys/kern/vfs_vnops.c:576 #5 vfs_lookup+0x12b sys/kern/vfs_lookup.c:431 #6 namei+0x7c5 sys/kern/vfs_lookup.c:250 #7 domkdirat+0x8b sys/kern/vfs_syscalls.c:3048 #8 syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] #8 syscall+0xb17 sys/arch/amd64/amd64/trap.c:791 #9 Xsyscall+0x128 Process 42818 (syz-executor) thread 0xffff80002a23d240 (312213) exclusive rrwlock inode r = 0 (0xfffff600707eaa08) #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+0xbd sys/kern/vfs_vops.c:527 #4 vn_lock+0xa4 sys/kern/vfs_vnops.c:576 #5 vget+0x2a2 sys/kern/vfs_subr.c:692 #6 ufs_ihashget+0x185 sys/ufs/ufs/ufs_ihash.c:98 #7 ffs_vget+0x8c sys/ufs/ffs/ffs_vfsops.c:1203 #8 ufs_lookup+0x1a36 sys/ufs/ufs/ufs_lookup.c:478 #9 VOP_LOOKUP+0x6e sys/kern/vfs_vops.c:85 #10 vfs_lookup+0x963 sys/kern/vfs_lookup.c:580 #11 namei+0x7c5 sys/kern/vfs_lookup.c:250 #12 dounlinkat+0xc1 sys/kern/vfs_syscalls.c:1807 #13 syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] #13 syscall+0xb17 sys/arch/amd64/amd64/trap.c:791 #14 Xsyscall+0x128 exclusive rrwlock inode r = 0 (0xfffff6006da64e90) #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+0xbd sys/kern/vfs_vops.c:527 #4 vn_lock+0xa4 sys/kern/vfs_vnops.c:576 #5 vfs_lookup+0x12b sys/kern/vfs_lookup.c:431 #6 namei+0x7c5 sys/kern/vfs_lookup.c:250 #7 dounlinkat+0xc1 sys/kern/vfs_syscalls.c:1807 #8 syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] #8 syscall+0xb17 sys/arch/amd64/amd64/trap.c:791 #9 Xsyscall+0x128 ddb{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 11057 12017K 12034K 166960K 12151 0 pcb 17 12K 12K 166960K 17 0 rtable 209 5K 6K 166960K 354 0 pf 29 16K 16K 166960K 31 0 ifaddr 36 6K 7K 166960K 42 0 ifgroup 46 2K 2K 166960K 50 0 sysctl 1 1K 9K 166960K 6 0 counters 68 36K 37K 166960K 70 0 ioctlops 0 0K 4K 166960K 48 0 iov 0 0K 4K 166960K 7 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1287 81K 81K 166960K 1563 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 9K 166960K 10 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 0K 166960K 81 0 dirhash 12 2K 2K 166960K 15 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 23 85K 129K 166960K 455 0 sigio 0 0K 0K 166960K 12 0 proc 59 115K 147K 166960K 530 0 subproc 63 3K 4K 166960K 135 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 2 0K 0K 166960K 53 0 in_multi 78 5K 6K 166960K 95 0 ether_multi 1 0K 0K 166960K 2 0 mrt 2 0K 0K 166960K 12 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 121 546K 546K 166960K 121 0 exec 0 0K 1K 166960K 399 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 235 153K 204K 166960K 5832 0 UVM aobj 16 2K 4K 166960K 18 0 pinsyscall 45 90K 120K 166960K 1606 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 1 0K 0K 166960K 14 0 NDP 10 0K 1K 166960K 25 0 temp 41 9120K 9136K 166960K 4602 0 kqueue 13 20K 29K 166960K 102 0 SYN cache 2 16K 16K 166960K 2 0 ddb{1}> show all pools Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle plcache 128 28 0 0 1 0 1 1 0 8 0 rtpcb 120 61 0 56 1 0 1 1 0 8 0 rtentry 176 109 0 13 5 0 5 5 0 8 0 unpcb 144 288 0 269 2 0 2 2 0 8 1 syncache 336 15 0 15 1 0 1 1 0 8 1 tcpqe 32 3 0 3 1 0 1 1 0 8 1 tcpcb 736 170 0 159 4 0 4 4 0 8 3 arp 136 18 0 2 1 0 1 1 0 8 0 ipq 40 2 0 0 1 0 1 1 0 8 0 ipqe 40 5 0 2 1 0 1 1 0 8 0 inpcb 328 489 0 467 5 0 5 5 0 8 3 ip6q 80 3 0 1 1 0 1 1 0 8 0 ip6af 40 4 0 2 1 0 1 1 0 8 0 nd6 152 26 0 4 1 0 1 1 0 8 0 kcovpl 48 15 0 8 1 0 1 1 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 468 0 59 29 0 29 29 0 8 0 art_table 40 469 0 59 5 0 5 5 0 8 0 art_node 32 109 0 21 1 0 1 1 0 8 0 sysvmsgpl 40 11 0 3 1 0 1 1 0 8 0 semapl 72 78 0 68 1 0 1 1 0 8 0 shmpl 112 15 0 2 1 0 1 1 0 8 0 dirhash 1024 19 0 2 3 0 3 3 0 8 0 dino2pl 256 2122 0 648 93 0 93 93 0 8 0 ffsino 296 2122 0 648 114 0 114 114 0 8 0 nchpl 144 2741 0 1044 64 0 64 64 0 8 0 vnodes 216 2266 0 0 126 0 126 126 0 8 0 namei 1024 8847 0 8846 2 0 2 2 0 8 1 percpumem 16 51 0 1 1 0 1 1 0 8 0 kstatmem 264 25 0 2 2 0 2 2 0 8 0 scxspl 216 8852 0 8850 4 3 1 3 1 8 0 plimitpl 152 141 0 117 2 0 2 2 0 8 0 sigapl 424 749 0 698 7 0 7 7 0 8 0 knotepl 120 340 0 0 11 0 11 11 0 8 0 kqueuepl 224 121 0 112 1 0 1 1 0 8 0 pipepl 344 203 0 175 6 0 6 6 0 8 3 fdescpl 528 733 0 698 4 0 4 4 0 8 0 filepl 160 3930 0 3713 16 0 16 16 0 8 6 lockfpl 104 118 0 113 1 0 1 1 0 8 0 lockfspl 48 45 0 41 1 0 1 1 0 8 0 sessionpl 144 52 0 36 1 0 1 1 0 8 0 pgrppl 48 71 0 48 1 0 1 1 0 8 0 ucredpl 104 923 0 906 1 0 1 1 0 8 0 zombiepl 144 700 0 698 1 0 1 1 0 8 0 processpl 1232 749 0 698 5 0 5 5 0 8 0 procpl 664 1242 0 1184 6 0 6 6 0 8 0 sosppl 176 2 0 2 1 0 1 1 0 8 1 sockpl 752 840 0 794 8 0 8 8 0 8 3 mcl64k 65536 2 0 0 1 0 1 1 0 8 0 mcl9k128 9344 1 0 0 1 0 1 1 0 8 0 mcl8k 8192 2 0 0 1 0 1 1 0 8 0 mcl4k 4096 113 0 0 15 0 15 15 0 8 0 mcl2k 2048 27 0 0 4 0 4 4 0 8 0 mextrefs 64 26 0 0 1 0 1 1 0 8 0 mtagpl 96 2 0 0 1 0 1 1 0 8 0 mbufpl 256 1222 0 0 77 0 77 77 0 8 0 bufpl 272 2919 0 103 188 0 188 188 0 8 0 anonpl 32 5759 0 0 47 0 47 47 0 247 0 amapchunkpl 152 17792 0 17294 34 0 34 34 0 158 13 amappl16 200 1980 0 1959 6 2 4 5 0 8 1 amappl15 192 3 0 3 1 1 0 1 0 8 0 amappl14 184 402 0 400 1 0 1 1 0 8 0 amappl13 176 133 0 122 1 0 1 1 0 8 0 amappl12 168 977 0 943 2 0 2 2 0 8 0 amappl11 160 6 0 6 1 1 0 1 0 8 0 amappl10 152 58 0 48 1 0 1 1 0 8 0 amappl9 144 274 0 273 2 1 1 1 0 8 0 amappl8 136 92 0 91 1 0 1 1 0 8 0 amappl7 128 153 0 141 1 0 1 1 0 8 0 amappl6 120 144 0 142 1 0 1 1 0 8 0 amappl5 112 119 0 110 1 0 1 1 0 8 0 amappl4 104 298 0 280 1 0 1 1 0 8 0 amappl3 96 3093 0 2996 5 1 4 4 0 8 1 amappl2 88 958 0 883 3 0 3 3 0 8 0 amappl1 80 15183 0 14600 20 0 20 20 0 8 3 amappl 88 5012 0 4845 5 0 5 5 0 92 0 uvmvnodes 80 110 0 0 3 0 3 3 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 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 17 0 2 1 0 1 1 0 8 0 uaddrrnd 24 733 0 698 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 733 0 698 1 0 1 1 0 8 0 vmmpekpl 168 9306 0 9266 3 0 3 3 0 8 0 vmmpepl 168 60373 0 58407 117 0 117 117 0 357 20 vmsppl 488 732 0 698 7 1 6 6 0 8 0 rwobjpl 80 20949 0 19961 29 0 29 29 0 8 3 pdppl 4096 1473 0 1396 119 36 83 99 0 8 6 pvpl 32 13633 0 0 110 0 110 110 0 265 0 pmappl 256 732 0 698 4 1 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 545 0 39 15 0 15 15 0 8 0 ddb{1}> machine ddbcpu 0 Stopped at x86_ipi_db+0x27: addq $0x8,%rsp x86_ipi_db(ffffffff839d9ff0) 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_lock(ffffffff83abdc00) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:142 [inline] __mp_lock(ffffffff83abdc00) at __mp_lock+0x192 sys/kern/kern_lock.c:173 intr_handler(ffff80002a348e80,ffff8000002a3480) at intr_handler+0xe9 sys/arch/amd64/amd64/intr.c:560 Xintr_ioapic_edge23_untramp() at Xintr_ioapic_edge23_untramp+0x18f end of kernel end trace frame: 0x7da89cddf360, count: 9 ddb{0}> trace x86_ipi_db(ffffffff839d9ff0) 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_lock(ffffffff83abdc00) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:142 [inline] __mp_lock(ffffffff83abdc00) at __mp_lock+0x192 sys/kern/kern_lock.c:173 intr_handler(ffff80002a348e80,ffff8000002a3480) at intr_handler+0xe9 sys/arch/amd64/amd64/intr.c:560 Xintr_ioapic_edge23_untramp() at Xintr_ioapic_edge23_untramp+0x18f end of kernel end trace frame: 0x7da89cddf360, count: -6 ddb{0}> machine ddbcpu 1 Stopped at db_enter+0x25: addq $0x8,%rsp db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438 panic(ffffffff8346620e) at panic+0x1e5 sys/kern/subr_prf.c:198 free(2000,35,0) at free+0x6b7 sys/kern/kern_malloc.c:426 ip_freemoptions(ffff800000c40880) at ip_freemoptions+0xea sys/netinet/ip_output.c:1744 in_pcbdetach(fffff6006cf40528) at in_pcbdetach+0xec sys/netinet/in_pcb.c:605 udp_detach(ffff800010fdf4b0) at udp_detach+0x5a sys/netinet/udp_usrreq.c:1158 soclose(ffff800010fdf4b0,0) at soclose+0xb0 pru_detach sys/sys/protosw.h:281 [inline] soclose(ffff800010fdf4b0,0) at soclose+0xb0 sys/kern/uipc_socket.c:403 soo_close(fffff6007dc36420,ffff80003c3d5a18) at soo_close+0x56 sys/kern/sys_socket.c:-1 fdrop(fffff6007dc36420,ffff80003c3d5a18) at fdrop+0x121 sys/kern/kern_descrip.c:1281 closef(fffff6007dc36420,ffff80003c3d5a18) at closef+0x192 sys/kern/kern_descrip.c:1265 fdfree(ffff80003c3d5a18) at fdfree+0x116 sys/kern/kern_descrip.c:1196 exit1(ffff80003c3d5a18,0,0,1) at exit1+0x595 sys/kern/kern_exit.c:215 sys_exit(ffff80003c3d5a18,ffff80002a34e620,ffff80002a34e570) at sys_exit+0x1a sys/kern/kern_exit.c:-1 syscall(ffff80002a34e620) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80002a34e620) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:791 end trace frame: 0xffff80002a34e6a0, count: 0 ddb{1}> trace db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438 panic(ffffffff8346620e) at panic+0x1e5 sys/kern/subr_prf.c:198 free(2000,35,0) at free+0x6b7 sys/kern/kern_malloc.c:426 ip_freemoptions(ffff800000c40880) at ip_freemoptions+0xea sys/netinet/ip_output.c:1744 in_pcbdetach(fffff6006cf40528) at in_pcbdetach+0xec sys/netinet/in_pcb.c:605 udp_detach(ffff800010fdf4b0) at udp_detach+0x5a sys/netinet/udp_usrreq.c:1158 soclose(ffff800010fdf4b0,0) at soclose+0xb0 pru_detach sys/sys/protosw.h:281 [inline] soclose(ffff800010fdf4b0,0) at soclose+0xb0 sys/kern/uipc_socket.c:403 soo_close(fffff6007dc36420,ffff80003c3d5a18) at soo_close+0x56 sys/kern/sys_socket.c:-1 fdrop(fffff6007dc36420,ffff80003c3d5a18) at fdrop+0x121 sys/kern/kern_descrip.c:1281 closef(fffff6007dc36420,ffff80003c3d5a18) at closef+0x192 sys/kern/kern_descrip.c:1265 fdfree(ffff80003c3d5a18) at fdfree+0x116 sys/kern/kern_descrip.c:1196 exit1(ffff80003c3d5a18,0,0,1) at exit1+0x595 sys/kern/kern_exit.c:215 sys_exit(ffff80003c3d5a18,ffff80002a34e620,ffff80002a34e570) at sys_exit+0x1a sys/kern/kern_exit.c:-1 syscall(ffff80002a34e620) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80002a34e620) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:791 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7addca6cc330, count: -15