panic: mutex 0xfffffd806bde1bc0 not held in mtx_leave Stopped at db_enter+0x25: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND 411757 26654 0 0 0 1 syz-executor db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff830777cb) at panic+0x1e5 sys/kern/subr_prf.c:198 mtx_leave(fffffd806bde1bc0) at mtx_leave+0x17c sys/kern/kern_lock.c:335 msleep(fffffd806bde1ad8,fffffd806bde1bc0,4,ffffffff832017c0,0) at msleep+0x125 sys/kern/kern_synch.c:249 vm_map_lock_ln(fffffd806bde1aa8,af6d7ffe000,0) at vm_map_lock_ln+0xd4 sys/uvm/uvm_map.c:5250 uvm_map_protect(fffffd806bde1aa8,af6d7dfe000,af6d7ffe000,3,0,0,6e18510c29b2f7cd) at uvm_map_protect+0xe1 sys/uvm/uvm_map.c:3059 sys_mprotect(ffff8000371e2538,ffff8000355aa180,ffff8000355aa0d0) at sys_mprotect+0x34c sys/uvm/uvm_mmap.c:585 syscall(ffff8000355aa180) at syscall+0xbb6 mi_syscall sys/sys/syscall_mi.h:179 [inline] syscall(ffff8000355aa180) at syscall+0xbb6 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x73625fb4d020, count: 6 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: mutex 0xfffffd806bde1bc0 not held in mtx_leave ddb{0}> trace db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff830777cb) at panic+0x1e5 sys/kern/subr_prf.c:198 mtx_leave(fffffd806bde1bc0) at mtx_leave+0x17c sys/kern/kern_lock.c:335 msleep(fffffd806bde1ad8,fffffd806bde1bc0,4,ffffffff832017c0,0) at msleep+0x125 sys/kern/kern_synch.c:249 vm_map_lock_ln(fffffd806bde1aa8,af6d7ffe000,0) at vm_map_lock_ln+0xd4 sys/uvm/uvm_map.c:5250 uvm_map_protect(fffffd806bde1aa8,af6d7dfe000,af6d7ffe000,3,0,0,6e18510c29b2f7cd) at uvm_map_protect+0xe1 sys/uvm/uvm_map.c:3059 sys_mprotect(ffff8000371e2538,ffff8000355aa180,ffff8000355aa0d0) at sys_mprotect+0x34c sys/uvm/uvm_mmap.c:585 syscall(ffff8000355aa180) at syscall+0xbb6 mi_syscall sys/sys/syscall_mi.h:179 [inline] syscall(ffff8000355aa180) at syscall+0xbb6 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x73625fb4d020, count: -9 ddb{0}> show registers rdi 0 rsi 0x1 rbp 0xffff8000355a9d80 rbx 0xffffffff834a2dbf cpu_info_full_primary+0x2dbf rdx 0 rcx 0xffff8000371e2538 rax 0xffffffff834a1ff0 cpu_info_full_primary+0x1ff0 r8 0x101010101010101 r9 0x8080808080808080 r10 0x10ff25dc12cba691 r11 0x520eac8498811957 r12 0xffffffff834a2bc0 cpu_info_full_primary+0x2bc0 r13 0 r14 0 r15 0x1 rip 0xffffffff813e7875 db_enter+0x25 cs 0x8 rflags 0x246 rsp 0xffff8000355a9d70 ss 0x10 db_enter+0x25: addq $0x8,%rsp ddb{0}> show proc PROC (syz-executor) tid=279407 pid=3581 tcnt=4 stat=sleep flags process=0 proc=20 runpri=50, usrpri=50, slppri=4, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff8000371e2a48,0xffff8000371e3c10 process=0xffff8000353971f8 user=0xffff8000355a5000, vmspace=0xfffffd806bde1aa8 estcpu=36, cpticks=1, pctcpu=0.0, user=1, sys=0, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 81487 313904 21840 0 2 0 syz-executor 81487 489137 21840 0 3 0x4000000 biowait syz-executor * 3581 279407 95479 0 3 0x20 syz-executor 3581 296661 95479 0 3 0x4000080 fsleep syz-executor 3581 134654 95479 0 3 0x4000080 fsleep syz-executor 3581 234415 95479 0 3 0x4000080 fsleep syz-executor 26654 411757 58771 0 7 0 syz-executor 26654 435618 58771 0 3 0x4000080 kqread syz-executor 4563 296729 88109 0 2 0 syz-executor 4563 126697 88109 0 3 0x4000080 sbwait syz-executor 4563 367860 88109 0 3 0x4000080 fsleep syz-executor 14447 114332 37328 0 2 0 syz-executor 14447 107539 37328 0 3 0x4000080 ttyout syz-executor 82933 75959 83764 0 2 0 syz-executor 82933 154306 83764 0 3 0x4000080 fsleep syz-executor 82933 222088 83764 0 3 0x4000080 fsleep syz-executor 13106 367495 41318 0 2 0 syz-executor 13106 450272 41318 0 3 0x4000080 sbwait syz-executor 13106 283197 41318 0 3 0x4000080 fsleep syz-executor 35814 195559 0 0 3 0x14200 bored sosplice 87378 159620 12250 60928 3 0x90 nanoslp syz-executor 87378 134261 12250 60928 3 0x4000090 msgwait syz-executor 87378 282854 12250 60928 3 0x4000090 fsleep syz-executor 12250 186212 18511 0 3 0x82 nanoslp syz-executor 88109 198564 18511 0 3 0x82 nanoslp syz-executor 95479 400528 18511 0 3 0x82 nanoslp syz-executor 83764 465082 18511 0 3 0x82 nanoslp syz-executor 41318 476882 18511 0 3 0x82 nanoslp syz-executor 21840 297284 18511 0 3 0x82 nanoslp syz-executor 58771 85360 18511 0 3 0x82 nanoslp syz-executor 37328 316378 18511 0 3 0x82 nanoslp syz-executor 18511 469582 81212 0 3 0x82 kqread syz-executor 81212 457233 5750 0 3 0x10008a sigsusp ksh 5750 159929 64413 0 3 0x98 kqread sshd-session 64413 303038 64857 0 3 0x92 kqread sshd-session 75685 30626 1 0 3 0x100083 ttyin getty 64857 503397 1 0 3 0x88 kqread sshd 92120 161681 52669 74 3 0x1100092 bpf pflogd 52669 453302 1 0 3 0x80 sbwait pflogd 74450 166368 94716 73 3 0x1100090 kqread syslogd 94716 254043 1 0 3 0x100082 sbwait syslogd 7047 347504 1 0 3 0x100080 kqread resolvd 21403 414466 50565 77 3 0x100092 kqread dhcpleased 76722 78536 50565 77 3 0x100092 kqread dhcpleased 50565 13434 1 0 3 0x80 kqread dhcpleased 89019 347943 0 0 3 0x14200 bored smr 45656 119734 0 0 2 0x14200 zerothread 47805 210738 0 0 3 0x14200 aiodoned aiodoned 33699 20940 0 0 3 0x14200 syncer update 93675 66485 0 0 3 0x14200 cleaner cleaner 74141 112120 0 0 3 0x14200 reaper reaper 31247 338345 0 0 3 0x14200 pgdaemon pagedaemon 54905 421679 0 0 3 0x14200 bored viomb 72575 138790 0 0 3 0x40014200 acpi0 acpi0 87452 23876 0 0 3 0x40014200 idle1 72263 293428 0 0 3 0x14200 bored softnet3 48020 398159 0 0 3 0x14200 bored softnet2 30101 294576 0 0 3 0x14200 bored softnet1 51038 22607 0 0 3 0x14200 bored softnet0 72384 429617 0 0 3 0x14200 bored systqmp 75299 161472 0 0 3 0x14200 bored systq 440 515593 0 0 3 0x14200 tmoslp softclockmp 1351 6936 0 0 3 0x40014200 tmoslp softclock 20972 296580 0 0 3 0x40014200 idle0 1 183988 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks CPU 0: exclusive mutex &map->flags_lock r = 0 (0xfffffd806bde1c00) #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 vm_map_lock_ln+0x6b sys/uvm/uvm_map.c:5244 #4 uvm_map_protect+0xe1 sys/uvm/uvm_map.c:3059 #5 sys_mprotect+0x34c sys/uvm/uvm_mmap.c:585 #6 syscall+0xbb6 mi_syscall sys/sys/syscall_mi.h:179 [inline] #6 syscall+0xbb6 sys/arch/amd64/amd64/trap.c:577 #7 Xsyscall+0x128 Process 81487 (syz-executor) thread 0xffff8000ffff27b8 (489137) exclusive rrwlock inode r = 0 (0xfffffd806bce1b40) #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 ufs_ihashins+0x4f sys/ufs/ufs/ufs_ihash.c:169 #5 ffs_vget+0x187 sys/ufs/ffs/ffs_vfsops.c:1230 #6 ffs_inode_alloc+0x283 sys/ufs/ffs/ffs_alloc.c:393 #7 ufs_makeinode+0xcb sys/ufs/ufs/ufs_vnops.c:1732 #8 ufs_create+0x4e sys/ufs/ufs/ufs_vnops.c:147 #9 VOP_CREATE+0xff sys/kern/vfs_vops.c:103 #10 vn_open+0x491 sys/kern/vfs_vnops.c:116 #11 doopenat+0x31d sys/kern/vfs_syscalls.c:1123 #12 syscall+0xaf8 mi_syscall sys/sys/syscall_mi.h:179 [inline] #12 syscall+0xaf8 sys/arch/amd64/amd64/trap.c:577 #13 Xsyscall+0x128 exclusive rrwlock inode r = 0 (0xfffffd806bce13d0) #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 vfs_lookup+0x109 sys/kern/vfs_lookup.c:418 #6 namei+0x7aa sys/kern/vfs_lookup.c:250 #7 vn_open+0x1f4 sys/kern/vfs_vnops.c:107 #8 doopenat+0x31d sys/kern/vfs_syscalls.c:1123 #9 syscall+0xaf8 mi_syscall sys/sys/syscall_mi.h:179 [inline] #9 syscall+0xaf8 sys/arch/amd64/amd64/trap.c:577 #10 Xsyscall+0x128 Process 3581 (syz-executor) thread 0xffff8000371e3c00 (296661) exclusive rrwlock inode r = 0 (0xfffffd806bce1e70) #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 uvn_io+0x412 sys/uvm/uvm_vnode.c:1265 #6 uvn_put+0x125 sys/uvm/uvm_vnode.c:928 #7 uvm_pager_put+0x18e sys/uvm/uvm_pager.c:525 #8 uvn_flush+0x72a sys/uvm/uvm_vnode.c:727 #9 uvm_map_clean+0x87e sys/uvm/uvm_map.c:4578 #10 syscall+0xaf8 mi_syscall sys/sys/syscall_mi.h:179 [inline] #10 syscall+0xaf8 sys/arch/amd64/amd64/trap.c:577 #11 Xsyscall+0x128 exclusive kernel_lock &kernel_lock r = 1 (0xffffffff83592d78) #0 witness_lock+0x5bb stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5bb sys/kern/subr_witness.c:1155 #1 syscall+0xad6 mi_syscall sys/sys/syscall_mi.h:179 [inline] #1 syscall+0xad6 sys/arch/amd64/amd64/trap.c:577 #2 Xsyscall+0x128 ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10187 11114K 11436K 166960K 11390 0 pcb 18 12K 12K 166960K 32 0 rtable 237 7K 7K 166960K 366 0 pf 34 17K 18K 166960K 45 0 ifaddr 43 7K 7K 166960K 45 0 ifgroup 55 2K 2K 166960K 55 0 counters 64 36K 36K 166960K 64 0 ioctlops 0 0K 4K 166960K 1488 0 iov 0 0K 12K 166960K 3 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1370 86K 86K 166960K 1422 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 1K 166960K 2 0 VM map 2 1K 1K 166960K 2 0 sem 3 0K 0K 166960K 7 0 dirhash 12 2K 2K 166960K 12 0 ACPI 1690 195K 286K 166960K 12468 0 file desc 18 65K 93K 166960K 174 0 proc 71 91K 115K 166960K 530 0 subproc 104 6K 6K 166960K 104 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 8 0 in_multi 99 7K 7K 166960K 103 0 ether_multi 1 0K 0K 166960K 2 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 55 254K 254K 166960K 55 0 exec 0 0K 1K 166960K 370 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 257 73K 73K 166960K 3367 0 UVM aobj 3 2K 2K 166960K 3 0 pinsyscall 43 86K 106K 166960K 1273 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 4 0 NDP 12 0K 2K 166960K 28 0 temp 37 6812K 6874K 166960K 4131 0 kqueue 16 26K 28K 166960K 31 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 38 0 34 1 0 1 1 0 8 0 rtentry 112 111 0 1 4 0 4 4 0 8 0 unpcb 144 57 0 37 1 0 1 1 0 8 0 syncache 336 3 0 3 2 1 1 1 0 8 1 tcpcb 808 83 0 79 7 0 7 7 0 8 6 arp 120 18 0 0 1 0 1 1 0 8 0 inpcb 336 173 0 160 7 0 7 7 0 8 4 nd6 136 24 0 0 1 0 1 1 0 8 0 kcovpl 48 8 0 0 1 0 1 1 0 8 0 pffrag 232 1 0 0 1 0 1 1 0 482 0 pffrnode 88 1 0 0 1 0 1 1 0 8 0 pffrent 40 1 0 0 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 pfstitem 24 23 0 0 1 0 1 1 0 8 0 pfstkey 128 23 0 0 1 0 1 1 0 8 0 pfstate 376 23 0 0 3 0 3 3 0 8 0 pfrule 1344 21 0 15 2 0 2 2 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 452 0 0 29 0 29 29 0 8 0 art_table 32 453 0 0 4 0 4 4 0 8 0 art_node 16 110 0 10 1 0 1 1 0 8 0 sysvmsgpl 40 1 0 1 1 0 1 1 0 8 1 semapl 112 4 0 3 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 1618 0 107 95 0 95 95 0 8 0 ffsino 272 1618 0 107 101 0 101 101 0 8 0 nchpl 144 1859 0 168 63 0 63 63 0 8 0 uvmvnodes 80 1760 0 0 36 0 36 36 0 8 0 vnodes 216 1760 0 0 98 0 98 98 0 8 0 namei 1024 5848 0 5847 3 1 2 2 0 8 1 percpumem 16 46 0 0 1 0 1 1 0 8 0 kstatmem 264 24 0 0 2 0 2 2 0 8 0 scxspl 216 5315 0 5314 4 2 2 2 1 8 1 plimitpl 152 62 0 44 1 0 1 1 0 8 0 sigapl 424 482 0 431 7 0 7 7 0 8 1 futexpl 64 662 0 654 1 0 1 1 0 8 0 knotepl 120 279 0 0 9 0 9 9 0 8 0 kqueuepl 216 31 0 17 1 0 1 1 0 8 0 pipepl 320 144 0 116 5 0 5 5 0 8 2 fdescpl 496 463 0 431 5 0 5 5 0 8 0 filepl 152 1845 0 1569 14 0 14 14 0 8 1 lockfpl 104 23 0 18 1 0 1 1 0 8 0 lockfspl 48 13 0 8 1 0 1 1 0 8 0 sessionpl 144 22 0 13 1 0 1 1 0 8 0 pgrppl 48 32 0 15 1 0 1 1 0 8 0 ucredpl 104 97 0 83 1 0 1 1 0 8 0 zombiepl 144 431 0 431 1 0 1 1 0 8 1 processpl 1160 482 0 431 5 0 5 5 0 8 1 procpl 648 549 0 484 6 0 6 6 0 8 0 sosppl 168 2 0 2 1 0 1 1 0 8 1 sockpl 664 268 0 231 9 0 9 9 0 8 4 mcl64k 65536 2 0 0 1 0 1 1 0 8 0 mcl16k 16384 1 0 0 1 0 1 1 0 8 0 mcl8k 8192 2 0 0 1 0 1 1 0 8 0 mcl4k 4096 136 0 0 17 0 17 17 0 8 0 mcl2k 2048 22 0 0 3 0 3 3 0 8 0 mtagpl 96 3 0 0 1 0 1 1 0 8 0 mbufpl 256 165 0 0 11 0 11 11 0 8 0 bufpl 280 2256 0 92 155 0 155 155 0 8 0 anonpl 24 187413 0 183966 25 1 24 25 0 185 1 amapchunkpl 152 11328 0 10770 22 0 22 22 0 158 0 amappl16 200 5668 0 5651 5 1 4 5 0 8 3 amappl15 192 27 0 27 1 1 0 1 0 8 0 amappl14 184 125 0 113 1 0 1 1 0 8 0 amappl13 176 8 0 8 1 1 0 1 0 8 0 amappl12 168 1120 0 1088 3 1 2 2 0 8 0 amappl11 160 104 0 90 1 0 1 1 0 8 0 amappl10 152 25 0 25 1 1 0 1 0 8 0 amappl9 144 130 0 130 1 1 0 1 0 8 0 amappl8 136 25 0 23 1 0 1 1 0 8 0 amappl7 128 116 0 104 1 0 1 1 0 8 0 amappl6 120 173 0 172 1 0 1 1 0 8 0 amappl5 112 149 0 138 1 0 1 1 0 8 0 amappl4 104 320 0 301 1 0 1 1 0 8 0 amappl3 96 2017 0 1889 4 0 4 4 0 8 0 amappl2 88 681 0 616 2 0 2 2 0 8 0 amappl1 80 7717 0 7151 14 0 14 14 0 8 1 amappl 88 2986 0 2794 5 0 5 5 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 2 0 0 1 0 1 1 0 8 0 uaddrrnd 24 463 0 431 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 463 0 431 1 0 1 1 0 8 0 vmmpekpl 168 5379 0 5341 2 0 2 2 0 8 0 vmmpepl 168 39271 0 37366 84 0 84 84 0 357 1 vmsppl 448 462 0 431 6 1 5 5 0 8 1 rwobjpl 56 18694 0 15992 39 0 39 39 0 8 0 pdppl 4096 933 0 862 101 22 79 85 0 8 8 pvpl 32 9906 0 0 81 1 80 80 0 265 0 pmappl 248 462 0 431 3 0 3 3 0 8 0 extentpl 40 55 0 38 1 0 1 1 0 8 0 phpool 112 392 0 27 11 0 11 11 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(ffffffff830777cb) at panic+0x1e5 sys/kern/subr_prf.c:198 mtx_leave(fffffd806bde1bc0) at mtx_leave+0x17c sys/kern/kern_lock.c:335 msleep(fffffd806bde1ad8,fffffd806bde1bc0,4,ffffffff832017c0,0) at msleep+0x125 sys/kern/kern_synch.c:249 vm_map_lock_ln(fffffd806bde1aa8,af6d7ffe000,0) at vm_map_lock_ln+0xd4 sys/uvm/uvm_map.c:5250 uvm_map_protect(fffffd806bde1aa8,af6d7dfe000,af6d7ffe000,3,0,0,6e18510c29b2f7cd) at uvm_map_protect+0xe1 sys/uvm/uvm_map.c:3059 sys_mprotect(ffff8000371e2538,ffff8000355aa180,ffff8000355aa0d0) at sys_mprotect+0x34c sys/uvm/uvm_mmap.c:585 syscall(ffff8000355aa180) at syscall+0xbb6 mi_syscall sys/sys/syscall_mi.h:179 [inline] syscall(ffff8000355aa180) at syscall+0xbb6 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x73625fb4d020, count: -9 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 end of kernel end trace frame: 0x6faf82dbd8e0, count: 12 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 end of kernel end trace frame: 0x6faf82dbd8e0, count: -3