panic: ffs_valloc: dup alloc Stopped at db_enter+0x17: popq %rbp TID PID UID PRFLAGS PFLAGS CPU COMMAND 60009 38890 0 0 0x4000000 1 syz-executor *158228 61866 0 0x2 0 0K syz-executor db_enter() at db_enter+0x17 sys/arch/amd64/amd64/db_interface.c:457 panic(ffffffff84b596a0) at panic+0x270 sys/kern/subr_prf.c:198 ffs_inode_alloc(ffff8000017f5978,41c0,ffff8000001195b0,ffff8000299da4a0) at ffs_inode_alloc+0xcd7 ufs_mkdir(ffff8000299da740) at ufs_mkdir+0x25d sys/ufs/ufs/ufs_vnops.c:1112 VOP_MKDIR(ffff8000017d3978,ffff8000299da950,ffff8000299da980,ffff8000299da840) at VOP_MKDIR+0x1a8 sys/kern/vfs_vops.c:394 domkdirat(ffff800034aee7e8,ffffff9c,751e5c1c6450,1c0) at domkdirat+0x1f9 sys/kern/vfs_syscalls.c:3060 syscall(ffff8000299dac20) at syscall+0x1089 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff8000299dac20) at syscall+0x1089 sys/arch/amd64/amd64/trap.c:791 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x751e5c1c6410, count: 7 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_valloc: dup alloc ddb{0}> show kasan kasan: no report recorded this boot ddb{0}> trace db_enter() at db_enter+0x17 sys/arch/amd64/amd64/db_interface.c:457 panic(ffffffff84b596a0) at panic+0x270 sys/kern/subr_prf.c:198 ffs_inode_alloc(ffff8000017f5978,41c0,ffff8000001195b0,ffff8000299da4a0) at ffs_inode_alloc+0xcd7 ufs_mkdir(ffff8000299da740) at ufs_mkdir+0x25d sys/ufs/ufs/ufs_vnops.c:1112 VOP_MKDIR(ffff8000017d3978,ffff8000299da950,ffff8000299da980,ffff8000299da840) at VOP_MKDIR+0x1a8 sys/kern/vfs_vops.c:394 domkdirat(ffff800034aee7e8,ffffff9c,751e5c1c6450,1c0) at domkdirat+0x1f9 sys/kern/vfs_syscalls.c:3060 syscall(ffff8000299dac20) at syscall+0x1089 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff8000299dac20) at syscall+0x1089 sys/arch/amd64/amd64/trap.c:791 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x751e5c1c6410, count: -8 ddb{0}> show registers rdi 0 rsi 0x1 rbp 0xffff8000299da210 rbx 0xffff8000299da280 rdx 0 rcx 0xffffffff85093ff0 cpu_info_full_primary+0x1ff0 rax 0 r8 0x101010101010101 r9 0x8080808080808080 r10 0xffff8000299da1f8 r11 0xffffffff8154eec0 x86_bus_space_io_read_1 r12 0xffffffff84b596a0 .str.17 r13 0xffffffff85094c10 cpu_info_full_primary+0x2c10 r14 0xffffffff85094e0f cpu_info_full_primary+0x2e0f r15 0x1 rip 0xffffffff8200ee67 db_enter+0x17 cs 0x8 rflags 0x246 rsp 0xffff8000299da210 ss 0 db_enter+0x17: popq %rbp ddb{0}> show proc PROC (syz-executor) tid=158228 pid=61866 tcnt=1 stat=onproc flags process=2 proc=0 runpri=17, usrpri=81, slppri=17, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff8000298e4d08,0xffff800034aee2c8 process=0xffff800033618500 user=0xffff8000299cf000, vmspace=0xffff800001bbc3e8 estcpu=31, cpticks=3, pctcpu=0.0, user=0, sys=1, intr=1 ddb{0}> ps PID TID PPID UID S PRLAGS PFLAGS WAIT COMMAND 50572 503060 12497 0 2 0 0 syz-executor 50572 448983 12497 0 2 0 0x4000000 syz-executor 4359 363946 73324 0 2 0 0 syz-executor 4359 151126 73324 0 2 0 0x4000000 syz-executor 4359 134640 73324 0 2 0 0x4000000 syz-executor 4359 180549 73324 0 2 0 0x4000000 syz-executor 4359 143000 73324 0 2 0 0x4000000 syz-executor 4359 124895 73324 0 2 0 0x4000000 syz-executor 38890 242888 33285 0 2 0 0 syz-executor 38890 515424 33285 0 2 0 0x4000000 syz-executor 38890 60009 33285 0 7 0 0x4000000 syz-executor 38890 129961 33285 0 2 0 0x4000000 syz-executor 38890 335789 33285 0 2 0 0x4000000 syz-executor 38890 81494 33285 0 2 0 0x4000000 syz-executor 27284 337239 68051 0 2 0 0 syz-executor 27284 442835 68051 0 2 0 0x4000000 syz-executor 91185 310302 74262 0 2 0 0 syz-executor 91185 284558 74262 0 2 0 0x4000000 syz-executor 89880 133132 3242 0 2 0 0 syz-executor 22781 433674 22076 0 2 0 0 syz-executor *61866 158228 72704 0 7 0x2 0 syz-executor 3242 53087 72704 0 2 0x2 0 syz-executor 73324 212907 72704 0 2 0x2 0xc80 syz-executor 74262 350175 72704 0 2 0x2 0xc80 syz-executor 12497 114069 72704 0 3 0x2 0x80 nanoslp syz-executor 33285 252083 72704 0 2 0x2 0xc80 syz-executor 68051 331651 72704 0 2 0x2 0xc80 syz-executor 22076 6302 72704 0 3 0x2 0x80 nanoslp syz-executor 42669 67790 0 0 3 0x14000 0x280 nfsidl nfsio 12401 265560 0 0 3 0x14000 0x280 nfsidl nfsio 57314 109353 0 0 3 0x14000 0x280 nfsidl nfsio 89054 239939 0 0 3 0x14000 0x280 nfsidl nfsio 13631 38927 0 0 3 0x14000 0x280 nfsidl nfsio 62565 195321 0 0 3 0x14000 0x280 nfsidl nfsio 87630 33777 0 0 3 0x14000 0x280 nfsidl nfsio 85624 165099 0 0 3 0x14000 0x280 nfsidl nfsio 9210 207820 0 0 3 0x14000 0x280 nfsidl nfsio 80299 349467 0 0 3 0x14000 0x280 nfsidl nfsio 62521 93058 0 0 3 0x14000 0x280 nfsidl nfsio 95456 387122 0 0 3 0x14000 0x280 nfsidl nfsio 14827 39443 0 0 3 0x14000 0x280 nfsidl nfsio 35905 345505 0 0 3 0x14000 0x280 nfsidl nfsio 50313 83806 0 0 3 0x14000 0x280 nfsidl nfsio 62868 365921 0 0 3 0x14000 0x280 nfsidl nfsio 24661 452862 0 0 3 0x14000 0x280 nfsidl nfsio 15845 346171 0 0 3 0x14000 0x280 nfsidl nfsio 90966 456870 0 0 3 0x14000 0x280 nfsidl nfsio 67914 264323 0 0 3 0x14000 0x280 nfsidl nfsio 86197 323167 0 0 3 0x14000 0x200 acct acct 9765 343343 1 0 3 0x100003 0x80 ttyin getty 72704 468277 23594 0 3 0x2 0x80 kqread syz-executor 23594 19666 84396 0 3 0x100002 0x88 sigsusp ksh 84396 119794 48775 0 3 0x10 0x88 kqread sshd-session 48775 521080 64793 0 3 0x12 0x80 kqread sshd-session 64793 434964 1 0 3 0 0x88 kqread sshd 79075 379741 98786 74 3 0x1100012 0x80 bpf pflogd 98786 28424 1 0 3 0 0x80 sbwait pflogd 64529 508270 30799 73 3 0x1100010 0x80 kqread syslogd 30799 292564 1 0 3 0x100002 0x80 sbwait syslogd 68710 47004 1 0 3 0x100000 0x80 kqread resolvd 34911 175043 43041 77 3 0x100012 0x80 kqread dhcpleased 16542 375304 43041 77 3 0x100012 0x80 kqread dhcpleased 43041 265856 1 0 3 0 0x80 kqread dhcpleased 64070 52039 0 0 3 0x14000 0x200 bored smr 17925 444941 0 0 2 0x14000 0x200 zerothread 82692 62467 0 0 3 0x14000 0x200 aiodoned aiodoned 49702 256464 0 0 3 0x14000 0x200 syncer update 10432 261543 0 0 3 0x14000 0x200 cleaner cleaner 90447 39110 0 0 3 0x14000 0x200 reaper reaper 16561 147372 0 0 3 0x14000 0x200 pgdaemon pagedaemon 10694 123027 0 0 3 0x14000 0x200 bored viomb 87416 212142 0 0 3 0x14000 0x40000200 acpi0 acpi0 70490 364268 0 0 3 0x14000 0x40000200 idle1 34965 304086 0 0 3 0x14000 0x200 bored softnet1 87616 74355 0 0 3 0x14000 0x200 bored softnet0 31309 226010 0 0 3 0x14000 0x200 bored systqmp 18039 367705 0 0 3 0x14000 0x200 bored systq 98958 238785 0 0 3 0x14000 0x200 tmoslp softclockmp 63232 66473 0 0 3 0x14000 0x40000200 tmoslp softclock 99575 184100 0 0 3 0x14000 0x40000200 idle0 1 203918 0 0 3 0x2 0x80 wait init 0 0 -1 0 3 0x10000 0x200 scheduler swapper ddb{0}> show all locks Process 61866 (syz-executor) thread 0xffff800034aee7e8 (158228) exclusive kernel_lock &kernel_lock r = 0 (0xffffffff8558dbc0) #0 witness_lock+0x632 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x632 sys/kern/subr_witness.c:1160 #1 __mp_acquire_count+0x48 sys/kern/kern_lock.c:-1 #2 sleep_finish+0x423 sys/kern/kern_synch.c:369 #3 biowait+0xe6 sys/kern/vfs_bio.c:1110 #4 ffs_vget+0x4c4 sys/ufs/ffs/ffs_vfsops.c:1249 #5 ffs_inode_alloc+0x576 sys/ufs/ffs/ffs_alloc.c:393 #6 ufs_mkdir+0x25d sys/ufs/ufs/ufs_vnops.c:1112 #7 VOP_MKDIR+0x1a8 sys/kern/vfs_vops.c:394 #8 domkdirat+0x1f9 sys/kern/vfs_syscalls.c:3060 #9 syscall+0x1089 mi_syscall sys/sys/syscall_mi.h:176 [inline] #9 syscall+0x1089 sys/arch/amd64/amd64/trap.c:791 #10 Xsyscall+0x128 exclusive rrwlock inode r = 0 (0xffff800001d57d88) #0 witness_lock+0x632 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x632 sys/kern/subr_witness.c:1160 #1 rw_do_enter_write+0x53e sys/kern/kern_rwlock.c:320 #2 rrw_enter+0xf0 sys/kern/kern_rwlock.c:621 #3 VOP_LOCK+0x17e sys/kern/vfs_vops.c:527 #4 ufs_ihashins+0xda sys/ufs/ufs/ufs_ihash.c:146 #5 ffs_vget+0x2e9 sys/ufs/ffs/ffs_vfsops.c:1232 #6 ffs_inode_alloc+0x576 sys/ufs/ffs/ffs_alloc.c:393 #7 ufs_mkdir+0x25d sys/ufs/ufs/ufs_vnops.c:1112 #8 VOP_MKDIR+0x1a8 sys/kern/vfs_vops.c:394 #9 domkdirat+0x1f9 sys/kern/vfs_syscalls.c:3060 #10 syscall+0x1089 mi_syscall sys/sys/syscall_mi.h:176 [inline] #10 syscall+0x1089 sys/arch/amd64/amd64/trap.c:791 #11 Xsyscall+0x128 exclusive rrwlock inode r = 0 (0xffff8000017f5a18) #0 witness_lock+0x632 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x632 sys/kern/subr_witness.c:1160 #1 rw_do_enter_write+0x53e sys/kern/kern_rwlock.c:320 #2 rrw_enter+0xf0 sys/kern/kern_rwlock.c:621 #3 VOP_LOCK+0x17e sys/kern/vfs_vops.c:527 #4 vn_lock+0xca sys/kern/vfs_vnops.c:576 #5 vfs_lookup+0x1f7 sys/kern/vfs_lookup.c:431 #6 namei+0xe19 sys/kern/vfs_lookup.c:250 #7 domkdirat+0xe1 sys/kern/vfs_syscalls.c:3045 #8 syscall+0x1089 mi_syscall sys/sys/syscall_mi.h:176 [inline] #8 syscall+0x1089 sys/arch/amd64/amd64/trap.c:791 #9 Xsyscall+0x128 ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 11056 12250K 12463K 166960K 12586 0 pcb 17 32K 39K 166960K 55 0 rtable 255 26K 32K 166960K 2621 0 pf 34 22K 26K 166960K 212 0 ifaddr 41 13K 16K 166960K 362 0 ifgroup 55 2K 2K 166960K 380 0 sysctl 3 1K 13K 166960K 8 0 counters 70 42K 45K 166960K 236 0 ioctlops 6 3K 194K 166960K 1629 0 iov 0 0K 13K 166960K 7 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1434 92K 95K 166960K 2374 0 UFS quota 1 36K 36K 166960K 1 0 UFS mount 5 44K 44K 166960K 5 0 shm 2 2K 6K 166960K 5 0 VM map 2 1K 1K 166960K 2 0 sem 27 1K 3K 166960K 55 0 dirhash 15 2K 2K 166960K 15 0 ACPI 1734 201K 413K 166960K 11964 0 file desc 19 61K 121K 166960K 1521 0 sigio 0 0K 4K 166960K 136 0 proc 154 132K 195K 166960K 2706 0 subproc 63 7K 14K 166960K 756 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 20K 20K 166960K 1 0 ip_moptions 0 0K 0K 166960K 17 0 in_multi 88 6K 8K 166960K 935 0 ether_multi 1 0K 0K 166960K 1 0 mrt 1 0K 0K 166960K 26 0 ISOFS mount 1 36K 36K 166960K 1 0 MSDOSFS mount 1 20K 20K 166960K 1 0 ttys 55 384K 384K 166960K 55 0 exec 49 12K 17K 166960K 1419 0 fusefs mount 1 36K 36K 166960K 1 0 tdb 3 1K 1K 166960K 3 0 VM swap 14 124K 124K 166960K 15 0 UVM amap 517 339K 368K 166960K 11550 0 UVM aobj 4 4K 4K 166960K 4 0 pinsyscall 204 344K 381K 166960K 4662 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 7 0 NDP 26 1K 2K 166960K 263 0 temp 372 9425K 9469K 166960K 25641 0 kqueue 13 40K 84K 166960K 65 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 28 0 0 1 0 1 1 0 8 0 rtpcb 120 185 0 182 1 0 1 1 0 8 0 rtentry 176 947 0 847 7 1 6 6 0 8 1 unpcb 144 286 0 269 4 3 1 4 0 8 0 syncache 336 4 0 4 2 2 0 1 0 8 0 tcpcb 736 90 0 86 7 6 1 7 0 8 0 arp 136 170 0 154 1 0 1 1 0 8 0 inpcb 328 713 0 706 18 14 4 12 0 8 3 nd6 152 252 0 231 1 0 1 1 0 8 0 pkpcb 40 2 0 2 1 1 0 1 0 8 0 kcovpl 48 84 0 77 1 0 1 1 0 8 0 ppxss 1192 5 0 5 2 1 1 1 0 8 1 pffrag 232 3 0 2 1 0 1 1 0 482 0 pffrnode 88 3 0 2 1 0 1 1 0 8 0 pffrent 40 5 0 4 1 0 1 1 0 8 0 pfosfp 40 1428 0 1428 5 5 0 5 0 8 0 pfosfpen 112 1428 0 1428 21 21 0 21 0 8 0 pfstitem 24 54 0 18 1 0 1 1 0 8 0 pfstkey 128 54 0 18 2 0 2 2 0 8 0 pfstate 448 54 0 18 5 0 5 5 0 8 0 pfrule 1360 22 0 17 2 1 1 2 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 3826 0 3415 42 16 26 29 0 8 0 art_table 40 3827 0 3415 5 0 5 5 0 8 0 art_node 32 947 0 857 1 0 1 1 0 8 0 semupl 112 2 0 2 2 2 0 1 0 8 0 semapl 72 51 0 26 1 0 1 1 0 8 0 shmpl 120 1 0 0 1 0 1 1 0 8 0 dirhash 1024 19 0 0 3 0 3 3 0 8 0 dino2pl 256 2102 0 466 103 0 103 103 0 8 0 ffsino 296 2102 0 466 126 0 126 126 0 8 0 nchpl 144 2648 0 691 73 0 73 73 0 8 0 vnodes 216 3082 0 0 172 0 172 172 0 8 0 namei 1024 18382 0 18381 4 3 1 2 0 8 0 percpumem 16 134 0 83 1 0 1 1 0 8 0 kstatmem 264 193 0 166 2 0 2 2 0 8 0 scxspl 216 9471 0 9471 14 13 1 8 1 8 1 plimitpl 152 133 0 116 1 0 1 1 0 8 0 sigapl 424 1709 0 1641 11 2 9 9 0 8 0 knotepl 120 206 0 0 8 1 7 8 0 8 0 kqueuepl 224 175 0 166 5 4 1 5 0 8 0 pipepl 344 533 0 506 10 6 4 9 0 8 1 fdescpl 528 1672 0 1641 3 0 3 3 0 8 0 filepl 160 6448 0 6250 18 6 12 15 0 8 2 lockfpl 104 67 0 65 1 0 1 1 0 8 0 lockfspl 48 33 0 31 1 0 1 1 0 8 0 sessionpl 144 114 0 105 1 0 1 1 0 8 0 pgrppl 48 201 0 184 1 0 1 1 0 8 0 ucredpl 104 518 0 505 1 0 1 1 0 8 0 zombiepl 144 1641 0 1641 1 0 1 1 0 8 1 processpl 1240 1709 0 1641 6 0 6 6 0 8 0 procpl 664 2297 0 2216 8 0 8 8 0 8 0 sosppl 176 5 0 5 2 2 0 1 0 8 0 sockpl 752 1189 0 1162 22 16 6 16 0 8 3 mcl64k 65536 2 0 0 1 0 1 1 0 8 0 mcl16k 16384 2 0 0 1 0 1 1 0 8 0 mcl9k128 9344 2 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 25 0 0 4 0 4 4 0 8 0 mextrefs 64 34 0 0 1 0 1 1 0 8 0 mtagpl 96 3 0 0 1 0 1 1 0 8 0 mbufpl 256 186 0 0 12 0 12 12 0 8 0 bufpl 272 3102 0 108 200 0 200 200 0 8 0 anonpl 32 4937 0 0 40 0 40 40 0 222 0 amapchunkpl 152 30622 0 30248 27 6 21 22 0 158 5 amappl16 200 2278 0 2267 5 3 2 5 0 8 0 amappl15 192 7 0 7 2 2 0 1 0 8 0 amappl14 184 1346 0 1345 1 0 1 1 0 8 0 amappl13 176 279 0 266 1 0 1 1 0 8 0 amappl12 168 2218 0 2190 2 0 2 2 0 8 0 amappl11 160 11 0 11 2 2 0 1 0 8 0 amappl10 152 66 0 52 1 0 1 1 0 8 0 amappl9 144 276 0 276 1 1 0 1 0 8 0 amappl8 136 403 0 401 1 0 1 1 0 8 0 amappl7 128 303 0 289 1 0 1 1 0 8 0 amappl6 120 917 0 915 1 0 1 1 0 8 0 amappl5 112 99 0 89 1 0 1 1 0 8 0 amappl4 104 656 0 636 1 0 1 1 0 8 0 amappl3 96 5918 0 5841 3 0 3 3 0 8 0 amappl2 88 1553 0 1477 2 0 2 2 0 8 0 amappl1 80 21322 0 20733 16 2 14 15 0 8 0 amappl 88 9490 0 9363 5 1 4 5 0 92 0 uvmvnodes 80 107 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 7 0 7 2 2 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 3 0 0 1 0 1 1 0 8 0 uaddrrnd 24 1672 0 1641 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 1672 0 1641 1 0 1 1 0 8 0 vmmpekpl 168 15656 0 15607 3 0 3 3 0 8 0 vmmpepl 168 115726 0 113897 95 10 85 89 0 357 5 vmsppl 488 1671 0 1641 5 0 5 5 0 8 0 rwobjpl 80 34356 0 33399 26 2 24 25 0 8 0 pdppl 4096 3353 0 3282 219 142 77 87 0 8 6 pvpl 32 10846 0 0 89 1 88 88 0 265 0 pmappl 256 1671 0 1641 3 0 3 3 0 8 0 extentpl 40 47 0 29 1 0 1 1 0 8 0 phpool 120 629 0 173 14 0 14 14 0 8 0 ddb{0}> machine ddbcpu 0 Invalid cpu 0 ddb{0}> trace db_enter() at db_enter+0x17 sys/arch/amd64/amd64/db_interface.c:457 panic(ffffffff84b596a0) at panic+0x270 sys/kern/subr_prf.c:198 ffs_inode_alloc(ffff8000017f5978,41c0,ffff8000001195b0,ffff8000299da4a0) at ffs_inode_alloc+0xcd7 ufs_mkdir(ffff8000299da740) at ufs_mkdir+0x25d sys/ufs/ufs/ufs_vnops.c:1112 VOP_MKDIR(ffff8000017d3978,ffff8000299da950,ffff8000299da980,ffff8000299da840) at VOP_MKDIR+0x1a8 sys/kern/vfs_vops.c:394 domkdirat(ffff800034aee7e8,ffffff9c,751e5c1c6450,1c0) at domkdirat+0x1f9 sys/kern/vfs_syscalls.c:3060 syscall(ffff8000299dac20) at syscall+0x1089 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff8000299dac20) at syscall+0x1089 sys/arch/amd64/amd64/trap.c:791 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x751e5c1c6410, count: -8 ddb{0}> machine ddbcpu 1 Stopped at x86_ipi_db+0x19: leave x86_ipi_db(ffff800028fd3ff0) at x86_ipi_db+0x19 sys/arch/amd64/amd64/db_interface.c:412 x86_ipi_handler() at x86_ipi_handler+0x112 sys/arch/amd64/amd64/ipi.c:106 Xresume_lapic_ipi() at Xresume_lapic_ipi+0x27 __mp_lock(ffffffff8558d3c0) at __mp_lock+0x272 __mp_lock_spin sys/kern/kern_lock.c:142 [inline] __mp_lock(ffffffff8558d3c0) at __mp_lock+0x272 sys/kern/kern_lock.c:173 end trace frame: 0x0, count: 11 ddb{1}> trace x86_ipi_db(ffff800028fd3ff0) at x86_ipi_db+0x19 sys/arch/amd64/amd64/db_interface.c:412 x86_ipi_handler() at x86_ipi_handler+0x112 sys/arch/amd64/amd64/ipi.c:106 Xresume_lapic_ipi() at Xresume_lapic_ipi+0x27 __mp_lock(ffffffff8558d3c0) at __mp_lock+0x272 __mp_lock_spin sys/kern/kern_lock.c:142 [inline] __mp_lock(ffffffff8558d3c0) at __mp_lock+0x272 sys/kern/kern_lock.c:173 end trace frame: 0x0, count: -4