panic: ffs_freefile: freeing free inode Stopped at db_enter+0x25: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND *149770 67938 0 0x2 0 0K syz-executor 219010 84529 0 0x2 0 1 syz-executor db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438 panic(ffffffff83425f9b) at panic+0x1e5 sys/kern/subr_prf.c:198 ffs_freefile(fffffd80737e8a90,665d,2000) at ffs_freefile+0x45f ffs_inode_free(fffffd80737e8a90,665d,2000) at ffs_inode_free+0x44 sys/ufs/ffs/ffs_alloc.c:1355 ufs_inactive(ffff80002a2ea350) at ufs_inactive+0x29c sys/ufs/ufs/ufs_inode.c:94 VOP_INACTIVE(fffffd805fedd2b0,ffff8000ffffd9f8) at VOP_INACTIVE+0x104 sys/kern/vfs_vops.c:498 vput(fffffd805fedd2b0) at vput+0xe5 sys/kern/vfs_subr.c:789 VOP_REMOVE(fffffd805fedd7c0,fffffd805fedd2b0,ffff80002a2ea4b8) at VOP_REMOVE+0x199 sys/kern/vfs_vops.c:336 dounlinkat(ffff8000ffffd9f8,ffffff9c,7efd67209400,0) at dounlinkat+0x1c4 sys/kern/vfs_syscalls.c:1923 syscall(ffff80002a2ea630) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80002a2ea630) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7efd672098b0, 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: ffs_freefile: freeing free inode ddb{0}> trace db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438 panic(ffffffff83425f9b) at panic+0x1e5 sys/kern/subr_prf.c:198 ffs_freefile(fffffd80737e8a90,665d,2000) at ffs_freefile+0x45f ffs_inode_free(fffffd80737e8a90,665d,2000) at ffs_inode_free+0x44 sys/ufs/ffs/ffs_alloc.c:1355 ufs_inactive(ffff80002a2ea350) at ufs_inactive+0x29c sys/ufs/ufs/ufs_inode.c:94 VOP_INACTIVE(fffffd805fedd2b0,ffff8000ffffd9f8) at VOP_INACTIVE+0x104 sys/kern/vfs_vops.c:498 vput(fffffd805fedd2b0) at vput+0xe5 sys/kern/vfs_subr.c:789 VOP_REMOVE(fffffd805fedd7c0,fffffd805fedd2b0,ffff80002a2ea4b8) at VOP_REMOVE+0x199 sys/kern/vfs_vops.c:336 dounlinkat(ffff8000ffffd9f8,ffffff9c,7efd67209400,0) at dounlinkat+0x1c4 sys/kern/vfs_syscalls.c:1923 syscall(ffff80002a2ea630) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80002a2ea630) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7efd672098b0, count: -11 ddb{0}> show registers rdi 0 rsi 0x1 rbp 0xffff80002a2ea150 rbx 0xffffffff83953e07 cpu_info_full_primary+0x2e07 rdx 0 rcx 0xffff8000ffffd9f8 rax 0xffffffff83952ff0 cpu_info_full_primary+0x1ff0 r8 0x101010101010101 r9 0x8080808080808080 r10 0x60717f87f0084ef7 r11 0x31566b2707191d0c r12 0xffffffff83953c08 cpu_info_full_primary+0x2c08 r13 0 r14 0 r15 0x1 rip 0xffffffff823a8d45 db_enter+0x25 cs 0x8 rflags 0x246 rsp 0xffff80002a2ea140 ss 0x10 db_enter+0x25: addq $0x8,%rsp ddb{0}> show proc PROC (syz-executor) tid=149770 pid=67938 tcnt=1 stat=onproc flags process=2 proc=0 runpri=17, usrpri=50, slppri=17, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff8000ffffcf98,0xffff8000ffffc548 process=0xffff8000ffff1820 user=0xffff80002a2e5000, vmspace=0xfffffd800b0633d0 estcpu=36, cpticks=10, pctcpu=0.7, user=0, sys=10, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 58420 298737 65060 0 2 0xc80 syz-executor 58420 99983 65060 0 3 0x4000000 clonelk syz-executor 58420 114492 65060 0 3 0x4000080 fsleep syz-executor 95324 439116 84529 0 3 0x80 nanoslp syz-executor 95324 194735 84529 0 3 0x4000080 nanoslp syz-executor 95324 236812 84529 0 3 0x4000080 fsleep syz-executor 20688 511729 73494 0 2 0xc80 syz-executor 20688 482157 73494 0 3 0x4000080 fsleep syz-executor 20688 124712 73494 0 3 0x4000080 fsleep syz-executor 20688 463303 73494 0 3 0x4000080 ttyin syz-executor 65060 318244 78802 0 3 0x82 nanoslp syz-executor 73494 149306 78802 0 3 0x82 nanoslp syz-executor *67938 149770 78802 0 7 0x2 syz-executor 84529 219010 78802 0 7 0x2 syz-executor 78802 306398 79163 0 3 0x82 wait syz-executor 79163 286705 83800 0 3 0x10008a sigsusp ksh 83800 520557 49985 0 3 0x98 kqread sshd-session 49985 445485 27627 0 3 0x92 kqread sshd-session 1207 118033 1 0 3 0x100083 ttyin getty 27627 308262 1 0 3 0x88 kqread sshd 35233 213059 23167 74 3 0x1100092 bpf pflogd 23167 243678 1 0 3 0x80 sbwait pflogd 27532 503530 54081 73 3 0x1100090 kqread syslogd 54081 508085 1 0 3 0x100082 sbwait syslogd 41923 132244 1 0 3 0x100080 kqread resolvd 42947 166495 52605 77 3 0x100092 kqread dhcpleased 77981 490777 52605 77 3 0x100092 kqread dhcpleased 52605 91370 1 0 3 0x80 kqread dhcpleased 70437 471451 0 0 3 0x14200 bored smr 61230 119666 0 0 3 0x14200 pgzero zerothread 71171 73296 0 0 3 0x14200 aiodoned aiodoned 92819 434126 0 0 3 0x14200 syncer update 3201 436785 0 0 3 0x14200 cleaner cleaner 77203 137697 0 0 3 0x14200 reaper reaper 90674 2291 0 0 3 0x14200 pgdaemon pagedaemon 35046 520207 0 0 3 0x14200 bored viomb 58147 18552 0 0 3 0x40014200 acpi0 acpi0 80114 264916 0 0 3 0x40014200 idle1 36643 94840 0 0 3 0x14200 bored softnet1 68500 175216 0 0 3 0x14200 bored softnet0 69626 219602 0 0 3 0x14200 bored systqmp 46090 212199 0 0 3 0x14200 bored systq 37148 24184 0 0 3 0x14200 tmoslp softclockmp 22836 284192 0 0 2 0x40014200 softclock 84228 328170 0 0 3 0x40014200 idle0 1 141367 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks Process 20688 (syz-executor) thread 0xffff80003c3dc020 (463303) exclusive rrwlock inode r = 0 (0xfffffd806c7e21e8) #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 spec_open+0x2f2 sys/kern/spec_vnops.c:151 #6 VOP_OPEN+0x8b sys/kern/vfs_vops.c:138 #7 vn_open+0x7a5 sys/kern/vfs_vnops.c:183 #8 vndioctl+0xc43 sys/dev/vnd.c:458 #9 VOP_IOCTL+0xac sys/kern/vfs_vops.c:264 #10 vn_ioctl+0xf8 sys/kern/vfs_vnops.c:537 #11 sys_ioctl+0x674 sys/kern/sys_generic.c:-1 #12 syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline] #12 syscall+0xbd4 sys/arch/amd64/amd64/trap.c:783 #13 Xsyscall+0x128 Process 67938 (syz-executor) thread 0xffff8000ffffd9f8 (149770) exclusive kernel_lock &kernel_lock r = 0 (0xffffffff83a75800) #0 witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5f1 sys/kern/subr_witness.c:1160 #1 __mp_acquire_count+0x58 sys/kern/kern_lock.c:-1 #2 sleep_finish+0x2d8 sys/kern/kern_synch.c:369 #3 biowait+0xc6 sys/kern/vfs_bio.c:1242 #4 ffs_freefile+0xbe ffs_cgread sys/ufs/ffs/ffs_alloc.c:850 [inline] #4 ffs_freefile+0xbe sys/ufs/ffs/ffs_alloc.c:1377 #5 ffs_inode_free+0x44 sys/ufs/ffs/ffs_alloc.c:1355 #6 ufs_inactive+0x29c sys/ufs/ufs/ufs_inode.c:94 #7 VOP_INACTIVE+0x104 sys/kern/vfs_vops.c:498 #8 vput+0xe5 sys/kern/vfs_subr.c:789 #9 VOP_REMOVE+0x199 sys/kern/vfs_vops.c:336 #10 dounlinkat+0x1c4 sys/kern/vfs_syscalls.c:1923 #11 syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] #11 syscall+0xb17 sys/arch/amd64/amd64/trap.c:783 #12 Xsyscall+0x128 exclusive rrwlock inode r = 0 (0xfffffd80737e8b30) #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:686 #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+0x98a sys/kern/vfs_lookup.c:567 #11 namei+0x7ca sys/kern/vfs_lookup.c:250 #12 dounlinkat+0xc1 sys/kern/vfs_syscalls.c:1887 #13 syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] #13 syscall+0xb17 sys/arch/amd64/amd64/trap.c:783 #14 Xsyscall+0x128 exclusive rrwlock inode r = 0 (0xfffffd806e74f360) #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:686 #6 cache_lookup+0x351 sys/kern/vfs_cache.c:222 #7 ufs_lookup+0x1e3 sys/ufs/ufs/ufs_lookup.c:160 #8 VOP_LOOKUP+0x6e sys/kern/vfs_vops.c:85 #9 vfs_lookup+0x98a sys/kern/vfs_lookup.c:567 #10 namei+0x7ca sys/kern/vfs_lookup.c:250 #11 dounlinkat+0xc1 sys/kern/vfs_syscalls.c:1887 #12 syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] #12 syscall+0xb17 sys/arch/amd64/amd64/trap.c:783 #13 Xsyscall+0x128 ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 11060 12085K 12242K 166960K 12261 0 pcb 17 12K 12K 166960K 24 0 rtable 238 7K 7K 166960K 372 0 pf 34 17K 24K 166960K 55 0 ifaddr 43 7K 7K 166960K 47 0 ifgroup 55 2K 2K 166960K 57 0 sysctl 1 1K 9K 166960K 6 0 counters 70 37K 37K 166960K 72 0 ioctlops 0 0K 4K 166960K 1498 0 iov 0 0K 0K 166960K 1 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1294 81K 82K 166960K 1392 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 9K 166960K 5 0 VM map 2 1K 1K 166960K 2 0 sem 3 0K 0K 166960K 4 0 dirhash 12 2K 2K 166960K 12 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 13 45K 93K 166960K 185 0 proc 70 115K 180K 166960K 553 0 subproc 72 4K 4K 166960K 72 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 3 0 in_multi 99 7K 7K 166960K 100 0 ether_multi 1 0K 0K 166960K 1 0 mrt 0 0K 0K 166960K 4 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 49 228K 228K 166960K 49 0 exec 0 0K 1K 166960K 394 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 205 150K 160K 166960K 3609 0 UVM aobj 6 2K 2K 166960K 7 0 pinsyscall 38 76K 102K 166960K 1362 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 28 2K 2K 166960K 29 0 temp 35 9070K 9136K 166960K 5510 0 kqueue 14 22K 22K 166960K 24 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 26 0 0 1 0 1 1 0 8 0 rtpcb 120 39 0 35 1 0 1 1 0 8 0 rtentry 176 115 0 5 6 0 6 6 0 8 0 unpcb 144 54 0 37 1 0 1 1 0 8 0 syncache 336 3 0 3 1 0 1 1 0 8 1 tcpcb 736 17 0 12 1 0 1 1 0 8 0 arp 136 19 0 2 1 0 1 1 0 8 0 inpcb 328 88 0 79 2 0 2 2 0 8 1 nd6 152 25 0 0 1 0 1 1 0 8 0 pkpcb 40 1 0 1 1 0 1 1 0 8 1 kcovpl 48 8 0 0 1 0 1 1 0 8 0 ppxss 1192 1 0 1 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 pfrktable 1344 2 0 2 1 0 1 1 0 8 1 pfanchor 1288 2 0 0 1 0 1 1 0 8 0 pfstitem 24 18 0 0 1 0 1 1 0 8 0 pfstkey 128 18 0 0 1 0 1 1 0 8 0 pfstate 448 18 0 0 2 0 2 2 0 8 0 pfrule 1360 21 0 16 2 1 1 2 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 460 0 4 29 0 29 29 0 8 0 art_table 40 461 0 4 5 0 5 5 0 8 0 art_node 32 115 0 15 1 0 1 1 0 8 0 semapl 112 1 0 0 1 0 1 1 0 8 0 shmpl 112 4 0 1 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 1647 0 179 93 0 93 93 0 8 0 ffsino 296 1651 0 183 114 0 114 114 0 8 0 nchpl 144 1911 0 208 64 0 64 64 0 8 0 vnodes 216 1755 0 0 98 0 98 98 0 8 0 namei 1024 5885 0 5885 2 0 2 2 0 8 2 percpumem 16 51 0 1 1 0 1 1 0 8 0 kstatmem 264 28 0 2 2 0 2 2 0 8 0 scxspl 216 6623 0 6623 4 2 2 3 1 8 2 plimitpl 152 32 0 14 1 0 1 1 0 8 0 sigapl 424 509 0 466 7 0 7 7 0 8 1 knotepl 120 286 0 0 9 0 9 9 0 8 0 kqueuepl 224 25 0 15 1 0 1 1 0 8 0 pipepl 344 127 0 100 3 0 3 3 0 8 0 fdescpl 528 493 0 466 3 0 3 3 0 8 0 filepl 160 1824 0 1609 10 0 10 10 0 8 0 lockfpl 104 12 0 10 1 0 1 1 0 8 0 lockfspl 48 7 0 5 1 0 1 1 0 8 0 sessionpl 144 23 0 14 1 0 1 1 0 8 0 pgrppl 48 33 0 16 1 0 1 1 0 8 0 ucredpl 104 117 0 103 1 0 1 1 0 8 0 zombiepl 144 470 0 466 1 0 1 1 0 8 0 processpl 1232 509 0 466 5 0 5 5 0 8 1 procpl 664 599 0 549 6 0 6 6 0 8 0 sockpl 752 183 0 153 4 0 4 4 0 8 0 mcl64k 65536 1 0 0 1 0 1 1 0 8 0 mcl8k 8192 2 0 0 1 0 1 1 0 8 0 mcl4k 4096 116 0 0 15 0 15 15 0 8 0 mcl2k 2048 13 0 0 2 0 2 2 0 8 0 mtagpl 96 1 0 0 1 0 1 1 0 8 0 mbufpl 256 165 0 0 11 0 11 11 0 8 0 bufpl 280 2536 0 106 174 0 174 174 0 8 0 anonpl 32 5719 0 0 47 0 47 47 0 246 0 amapchunkpl 152 10311 0 9933 25 0 25 25 0 158 5 amappl16 200 2114 0 2079 5 0 5 5 0 8 2 amappl15 192 4 0 4 1 1 0 1 0 8 0 amappl14 184 440 0 439 1 0 1 1 0 8 0 amappl13 176 124 0 112 1 0 1 1 0 8 0 amappl12 168 769 0 743 2 0 2 2 0 8 0 amappl11 160 7 0 7 1 0 1 1 0 8 1 amappl10 152 68 0 54 1 0 1 1 0 8 0 amappl9 144 259 0 259 1 0 1 1 0 8 1 amappl8 136 109 0 107 1 0 1 1 0 8 0 amappl7 128 151 0 137 1 0 1 1 0 8 0 amappl6 120 162 0 160 1 0 1 1 0 8 0 amappl5 112 95 0 85 1 0 1 1 0 8 0 amappl4 104 308 0 287 1 0 1 1 0 8 0 amappl3 96 1837 0 1749 3 0 3 3 0 8 0 amappl2 88 541 0 481 2 0 2 2 0 8 0 amappl1 80 9585 0 8995 15 0 15 15 0 8 0 amappl 88 2863 0 2728 4 0 4 4 0 92 0 uvmvnodes 80 99 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 6 0 1 1 0 1 1 0 8 0 uaddrrnd 24 493 0 466 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 493 0 466 1 0 1 1 0 8 0 vmmpekpl 168 5816 0 5772 2 0 2 2 0 8 0 vmmpepl 168 39787 0 38084 87 0 87 87 0 357 0 vmsppl 488 492 0 466 5 0 5 5 0 8 0 rwobjpl 80 14579 0 13573 24 0 24 24 0 8 0 pdppl 4096 993 0 932 99 14 85 85 0 8 24 pvpl 32 12358 0 0 100 0 100 100 0 265 0 pmappl 256 492 0 466 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 269 0 17 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(ffffffff83425f9b) at panic+0x1e5 sys/kern/subr_prf.c:198 ffs_freefile(fffffd80737e8a90,665d,2000) at ffs_freefile+0x45f ffs_inode_free(fffffd80737e8a90,665d,2000) at ffs_inode_free+0x44 sys/ufs/ffs/ffs_alloc.c:1355 ufs_inactive(ffff80002a2ea350) at ufs_inactive+0x29c sys/ufs/ufs/ufs_inode.c:94 VOP_INACTIVE(fffffd805fedd2b0,ffff8000ffffd9f8) at VOP_INACTIVE+0x104 sys/kern/vfs_vops.c:498 vput(fffffd805fedd2b0) at vput+0xe5 sys/kern/vfs_subr.c:789 VOP_REMOVE(fffffd805fedd7c0,fffffd805fedd2b0,ffff80002a2ea4b8) at VOP_REMOVE+0x199 sys/kern/vfs_vops.c:336 dounlinkat(ffff8000ffffd9f8,ffffff9c,7efd67209400,0) at dounlinkat+0x1c4 sys/kern/vfs_syscalls.c:1923 syscall(ffff80002a2ea630) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80002a2ea630) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7efd672098b0, count: -11 ddb{0}> machine ddbcpu 1 Stopped at x86_ipi_db+0x27: addq $0x8,%rsp x86_ipi_db(ffff8000299bdff0) 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(ffffffff83a75000) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:142 [inline] __mp_lock(ffffffff83a75000) at __mp_lock+0x192 sys/kern/kern_lock.c:173 syscall(ffff80002a2cc5e0) at syscall+0xaf4 mi_syscall sys/sys/syscall_mi.h:175 [inline] syscall(ffff80002a2cc5e0) at syscall+0xaf4 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7da995e1a2b0, count: 9 ddb{1}> trace x86_ipi_db(ffff8000299bdff0) 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(ffffffff83a75000) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:142 [inline] __mp_lock(ffffffff83a75000) at __mp_lock+0x192 sys/kern/kern_lock.c:173 syscall(ffff80002a2cc5e0) at syscall+0xaf4 mi_syscall sys/sys/syscall_mi.h:175 [inline] syscall(ffff80002a2cc5e0) at syscall+0xaf4 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7da995e1a2b0, count: -6