panic: uvm_fault_unwire_locked: address not in map Stopped at db_enter+0x1c: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND *290105 26220 0 0 0x4000000 0K syz-executor.0 517306 89957 0 0x2 0 1 syz-executor.3 db_enter() at db_enter+0x1c sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff82856368) at panic+0x17b sys/kern/subr_prf.c:198 uvm_fault_unwire_locked(fffffd806a057af8,20000000,20001000) at uvm_fault_unwire_locked+0x321 sys/uvm/uvm_fault.c:1663 uvm_fault_unwire(fffffd806a057af8,20000000,20001000) at uvm_fault_unwire+0x43 sys/uvm/uvm_fault.c:1623 sys_sysctl(ffff80002a27dd50,ffff8000345a0cd0,ffff8000345a0d20) at sys_sysctl+0x239 sys/kern/kern_sysctl.c:259 syscall(ffff8000345a0da0) at syscall+0x4e6 sys/arch/amd64/amd64/trap.c:606 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x6e8fbba5680, count: 8 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: uvm_fault_unwire_locked: address not in map ddb{0}> trace db_enter() at db_enter+0x1c sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff82856368) at panic+0x17b sys/kern/subr_prf.c:198 uvm_fault_unwire_locked(fffffd806a057af8,20000000,20001000) at uvm_fault_unwire_locked+0x321 sys/uvm/uvm_fault.c:1663 uvm_fault_unwire(fffffd806a057af8,20000000,20001000) at uvm_fault_unwire+0x43 sys/uvm/uvm_fault.c:1623 sys_sysctl(ffff80002a27dd50,ffff8000345a0cd0,ffff8000345a0d20) at sys_sysctl+0x239 sys/kern/kern_sysctl.c:259 syscall(ffff8000345a0da0) at syscall+0x4e6 sys/arch/amd64/amd64/trap.c:606 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x6e8fbba5680, count: -7 ddb{0}> show registers rdi 0 rsi 0x1 rbp 0xffff8000345a0aa0 rbx 0xffffffff82b8eba7 cpu_info_full_primary+0x2ba7 rdx 0 rcx 0xffff80002a27dd50 rax 0xffffffff82b8dff0 cpu_info_full_primary+0x1ff0 r8 0x101010101010101 r9 0x8080808080808080 r10 0x7d457a9c62b6e2d9 r11 0x80ee328a81c4ddd3 r12 0xffffffff82b8e9a8 cpu_info_full_primary+0x29a8 r13 0 r14 0 r15 0x1 rip 0xffffffff818d209c db_enter+0x1c cs 0x8 rflags 0x246 rsp 0xffff8000345a0a90 ss 0 db_enter+0x1c: addq $0x8,%rsp ddb{0}> show proc PROC (syz-executor.0) tid=290105 pid=26220 tcnt=5 stat=onproc flags process=0 proc=4000000 runpri=36, usrpri=84, slppri=36, nice=20 wchan=0x0, wmesg=, ps_single=0x0 forw=0xffffffffffffffff, list=0xffff80002a27d558,0xffff80002a27dab8 process=0xffff8000ffff29f8 user=0xffff80003459b000, vmspace=0xfffffd806a057af8 estcpu=36, cpticks=0, pctcpu=0.0, user=0, sys=0, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 32653 164434 78075 0 2 0 syz-executor.5 26220 492916 30511 0 2 0 syz-executor.0 26220 39441 30511 0 2 0x4000000 syz-executor.0 *26220 290105 30511 0 7 0x4000000 syz-executor.0 26220 185657 30511 0 3 0x4000080 fsleep syz-executor.0 26220 445507 30511 0 2 0x4000000 syz-executor.0 75309 96665 2567 0 2 0 syz-executor.6 75309 475608 2567 0 3 0x4000080 fsleep syz-executor.6 99529 210549 49334 0 2 0 syz-executor.4 99529 57024 49334 0 2 0x4000000 syz-executor.4 26027 387835 6114 0 2 0 syz-executor.7 26027 298444 6114 0 2 0x4000000 syz-executor.7 62252 491133 70061 0 2 0 syz-executor.1 62252 316009 70061 0 3 0x4000080 fsleep syz-executor.1 6114 80060 25234 0 3 0x82 nanoslp syz-executor.7 2567 380644 25234 0 3 0x82 nanoslp syz-executor.6 78075 507120 25234 0 3 0x82 nanoslp syz-executor.5 49334 364411 25234 0 3 0x82 nanoslp syz-executor.4 89957 517306 25234 0 7 0x2 syz-executor.3 70061 60762 25234 0 3 0x82 nanoslp syz-executor.1 77317 379522 25234 0 2 0x2 syz-executor.2 30511 392926 25234 0 3 0x82 nanoslp syz-executor.0 25234 408246 35708 0 3 0x2000082 wait syz-fuzzer 25234 133115 35708 0 3 0x6000082 nanoslp syz-fuzzer 25234 358426 35708 0 3 0x6000082 wait syz-fuzzer 25234 7439 35708 0 3 0x6000082 wait syz-fuzzer 25234 86131 35708 0 3 0x6000082 wait syz-fuzzer 25234 68139 35708 0 3 0x6000082 thrsleep syz-fuzzer 25234 223379 35708 0 3 0x6000082 wait syz-fuzzer 25234 277390 35708 0 3 0x6000082 wait syz-fuzzer 25234 109164 35708 0 3 0x6000082 wait syz-fuzzer 25234 288852 35708 0 3 0x6000082 thrsleep syz-fuzzer 25234 71560 35708 0 3 0x6000082 thrsleep syz-fuzzer 25234 448522 35708 0 3 0x6000082 wait syz-fuzzer 25234 239916 35708 0 3 0x6000082 thrsleep syz-fuzzer 25234 490780 35708 0 3 0x6000082 kqread syz-fuzzer 25234 160651 35708 0 3 0x6000082 thrsleep syz-fuzzer 25234 142973 35708 0 3 0x6000082 thrsleep syz-fuzzer 35708 151569 91089 0 3 0x10008a sigsusp ksh 91089 398042 88024 0 3 0x9a kqread sshd 69189 361720 1 0 3 0x100083 ttyin getty 88024 183314 1 0 3 0x88 kqread sshd 51644 296978 30019 74 3 0x1100092 bpf pflogd 30019 201319 1 0 3 0x80 netio pflogd 45044 351685 30010 73 3 0x1100090 kqread syslogd 30010 487384 1 0 3 0x100082 netio syslogd 32526 155020 1 0 3 0x100080 kqread resolvd 99695 443539 81595 77 3 0x100092 kqread dhcpleased 94841 309894 81595 77 3 0x100092 kqread dhcpleased 81595 352250 1 0 3 0x80 kqread dhcpleased 33717 307300 0 0 3 0x14200 bored smr 43798 152813 0 0 2 0x14200 zerothread 90295 347428 0 0 3 0x14200 aiodoned aiodoned 93576 16436 0 0 3 0x14200 syncer update 28169 488892 0 0 3 0x14200 cleaner cleaner 43404 12890 0 0 3 0x14200 reaper reaper 60481 476704 0 0 3 0x14200 pgdaemon pagedaemon 27704 217135 0 0 3 0x14200 bored viomb 59438 268008 0 0 3 0x40014200 acpi0 acpi0 13019 232900 0 0 3 0x40014200 idle1 13815 430131 0 0 3 0x14200 bored softnet3 53206 295338 0 0 3 0x14200 bored softnet2 48911 264966 0 0 3 0x14200 bored softnet1 84032 162996 0 0 3 0x14200 bored softnet0 55405 358894 0 0 3 0x14200 bored systqmp 56823 371041 0 0 3 0x14200 bored systq 51683 254098 0 0 3 0x14200 tmoslp softclockmp 34285 480243 0 0 3 0x40014200 tmoslp softclock 38658 242368 0 0 3 0x40014200 idle0 1 505325 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks Process 26220 (syz-executor.0) thread 0xffff80002a27dd50 (290105) shared rwlock vmmaplk r = 0 (0xfffffd806a057bf0) #0 witness_lock+0x447 #1 rw_enter+0x3c8 sys/kern/kern_rwlock.c:309 #2 uvm_fault_unwire+0x35 sys/uvm/uvm_fault.c:1622 #3 sys_sysctl+0x239 sys/kern/kern_sysctl.c:259 #4 syscall+0x4e6 sys/arch/amd64/amd64/trap.c:606 #5 Xsyscall+0x128 exclusive kernel_lock &kernel_lock r = 0 (0xffffffff82d11378) #0 witness_lock+0x447 #1 __mp_acquire_count+0x48 sys/kern/kern_lock.c:227 #2 mi_switch+0x46d sys/kern/sched_bsd.c:470 #3 sleep_finish+0x19b sys/kern/kern_synch.c:414 #4 rw_enter+0x341 sys/kern/kern_rwlock.c:285 #5 uvm_fault_unwire+0x35 sys/uvm/uvm_fault.c:1622 #6 sys_sysctl+0x239 sys/kern/kern_sysctl.c:259 #7 syscall+0x4e6 sys/arch/amd64/amd64/trap.c:606 #8 Xsyscall+0x128 exclusive rwlock sysctllk r = 0 (0xffffffff82b9c310) #0 witness_lock+0x447 #1 rw_enter+0x3c8 sys/kern/kern_rwlock.c:309 #2 sys_sysctl+0x1c3 sys/kern/kern_sysctl.c:238 #3 syscall+0x4e6 sys/arch/amd64/amd64/trap.c:606 #4 Xsyscall+0x128 Process 89957 (syz-executor.3) thread 0xffff80002a2597f8 (517306) exclusive rrwlock inode r = 0 (0xfffffd806b8e3098) #0 witness_lock+0x447 #1 rw_enter+0x3c8 sys/kern/kern_rwlock.c:309 #2 rrw_enter+0x8c sys/kern/kern_rwlock.c:464 #3 VOP_LOCK+0x8b sys/kern/vfs_vops.c:518 #4 vn_lock+0x84 sys/kern/vfs_vnops.c:564 #5 vget+0x200 sys/kern/vfs_subr.c:676 #6 ufs_ihashget+0x121 sys/ufs/ufs/ufs_ihash.c:119 #7 ffs_vget+0x7c sys/ufs/ffs/ffs_vfsops.c:1314 #8 ufs_lookup+0x13ba sys/ufs/ufs/ufs_lookup.c:487 #9 VOP_LOOKUP+0x5c sys/kern/vfs_vops.c:85 #10 vfs_lookup+0x6e2 sys/kern/vfs_lookup.c:566 #11 namei+0x55a sys/kern/vfs_lookup.c:250 #12 dounlinkat+0x9d sys/kern/vfs_syscalls.c:1847 #13 syscall+0x4e6 sys/arch/amd64/amd64/trap.c:606 #14 Xsyscall+0x128 exclusive rrwlock inode r = 0 (0xfffffd806c9c56f8) #0 witness_lock+0x447 #1 rw_enter+0x3c8 sys/kern/kern_rwlock.c:309 #2 rrw_enter+0x8c sys/kern/kern_rwlock.c:464 #3 VOP_LOCK+0x8b sys/kern/vfs_vops.c:518 #4 vn_lock+0x84 sys/kern/vfs_vnops.c:564 #5 vfs_lookup+0xd5 sys/kern/vfs_lookup.c:418 #6 namei+0x55a sys/kern/vfs_lookup.c:250 #7 dounlinkat+0x9d sys/kern/vfs_syscalls.c:1847 #8 syscall+0x4e6 sys/arch/amd64/amd64/trap.c:606 #9 Xsyscall+0x128 ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10191 6491K 6499K 166960K 18772 0 pcb 13 10K 12K 166960K 923 0 rtable 234 6K 6K 166960K 352 0 pf 32 9K 10K 166960K 43 0 ifaddr 45 15K 15K 166960K 47 0 ifgroup 55 2K 2K 166960K 55 0 sysctl 2 0K 0K 166960K 2 0 counters 64 36K 36K 166960K 64 0 ioctlops 0 0K 4K 166960K 26650 0 iov 0 0K 4K 166960K 15 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1344 84K 84K 166960K 6104 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 9K 166960K 245 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 0K 166960K 1480 0 dirhash 12 2K 2K 166960K 12 0 ACPI 1697 195K 286K 166960K 12548 0 file desc 16 57K 89K 166960K 41386 0 sigio 0 0K 0K 166960K 1282 0 proc 68 91K 115K 166960K 527 0 subproc 104 6K 6K 166960K 104 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 in_multi 99 7K 7K 166960K 99 0 ether_multi 1 0K 0K 166960K 1 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 25 122K 122K 166960K 25 0 exec 0 0K 1K 166960K 384 0 tdb 3 0K 0K 166960K 3 0 pagedep 1 8K 8K 166960K 1 0 inodedep 1 32K 32K 166960K 1 0 newblk 1 0K 0K 166960K 1 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 314 83K 84K 166960K 363674 0 UVM aobj 131 4K 4K 166960K 131 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 NDP 12 0K 1K 166960K 28 0 temp 73 5924K 6052K 166960K 91443 0 kqueue 12 18K 30K 166960K 2836 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 35 0 32 1 0 1 1 0 8 0 rtentry 112 111 0 1 4 0 4 4 0 8 0 unpcb 144 19780 0 19765 66 65 1 10 0 8 0 syncache 312 4 0 4 1 1 0 1 0 8 0 tcpqe 32 307 0 307 1 1 0 1 0 8 0 tcpcb 808 85 0 81 1 0 1 1 0 8 0 arp 120 18 0 0 1 0 1 1 0 8 0 inpcb 368 1734 0 1727 14 13 1 7 0 8 0 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 16 0 15 2 1 1 1 0 482 0 pffrnode 88 13 0 12 2 1 1 1 0 8 0 pffrent 40 249 0 248 2 1 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 39 0 37 1 0 1 1 0 8 0 pfstkey 128 39 0 37 1 0 1 1 0 8 0 pfstate 376 39 0 37 3 2 1 3 0 8 0 pfrule 1344 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 256 452 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 semapl 112 1478 0 1468 1 0 1 1 0 8 0 shmpl 112 128 0 0 4 0 4 4 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 44465 0 43020 91 0 91 91 0 8 0 ffsino 272 44465 0 43020 97 0 97 97 0 8 0 nchpl 144 96439 0 94752 64 0 64 64 0 8 0 uvmvnodes 80 5926 0 0 121 0 121 121 0 8 0 vnodes 216 5926 0 0 330 0 330 330 0 8 0 namei 1024 266809 0 266809 2 1 1 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 263173 0 263173 23 22 1 8 1 8 1 plimitpl 152 34 0 18 1 0 1 1 0 8 0 sigapl 424 41706 0 41659 8 2 6 7 0 8 0 futexpl 64 254050 0 254047 1 0 1 1 0 8 0 knotepl 120 107 0 0 4 0 4 4 0 8 0 kqueuepl 216 7669 0 7661 42 39 3 5 0 8 2 pipepl 320 140 0 112 3 0 3 3 0 8 0 fdescpl 496 41688 0 41659 5 1 4 5 0 8 0 filepl 152 146118 0 145877 145 129 16 20 0 8 6 lockfpl 104 5017 0 5015 6 4 2 2 0 8 1 lockfspl 48 1636 0 1634 1 0 1 1 0 8 0 sessionpl 144 24 0 7 1 0 1 1 0 8 0 pgrppl 48 3400 0 3383 1 0 1 1 0 8 0 ucredpl 104 964 0 952 1 0 1 1 0 8 0 zombiepl 144 41659 0 41659 1 0 1 1 0 8 1 processpl 1072 41706 0 41659 4 0 4 4 0 8 0 procpl 680 93128 0 93058 55 48 7 8 0 8 1 sockpl 488 21572 0 21547 276 270 6 34 0 8 2 mcl64k 65536 25 0 0 3 0 3 3 0 8 0 mcl16k 16384 33 0 0 5 2 3 3 0 8 0 mcl12k 12288 33 0 0 2 0 2 2 0 8 0 mcl9k 9216 17 0 0 2 0 2 2 0 8 0 mcl8k 8192 65 0 0 3 0 3 3 0 8 0 mcl4k 4096 81 0 0 7 4 3 3 0 8 0 mcl2k2 2112 13 0 0 1 0 1 1 0 8 0 mcl2k 2048 374 0 0 34 9 25 34 0 8 1 mtagpl 96 3 0 0 1 0 1 1 0 8 0 mbufpl 256 1399 0 0 20 5 15 18 0 8 0 bufpl 288 45475 0 39152 452 0 452 452 0 8 0 anonpl 24 2896654 0 2888265 75 23 52 57 0 186 0 amapchunkpl 152 1136511 0 1135756 177 145 32 34 0 158 1 amappl16 200 42799 0 42627 18 8 10 10 0 8 0 amappl15 192 25 0 23 1 0 1 1 0 8 0 amappl14 184 169 0 157 2 1 1 2 0 8 0 amappl13 176 12 0 12 2 2 0 1 0 8 0 amappl12 168 42352 0 42320 4 2 2 3 0 8 0 amappl11 160 57 0 43 1 0 1 1 0 8 0 amappl10 152 41 0 29 1 0 1 1 0 8 0 amappl9 144 253 0 252 1 0 1 1 0 8 0 amappl8 136 446 0 378 3 0 3 3 0 8 0 amappl7 128 207 0 180 2 0 2 2 0 8 0 amappl6 120 628 0 620 1 0 1 1 0 8 0 amappl5 112 232 0 220 1 0 1 1 0 8 0 amappl4 104 956 0 928 2 1 1 2 0 8 0 amappl3 96 228609 0 228519 4 1 3 3 0 8 0 amappl2 88 43816 0 43738 3 1 2 3 0 8 0 amappl1 80 149292 0 148736 23 9 14 23 0 8 0 amappl 88 361474 0 361269 9 3 6 6 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 72 130 0 0 3 0 3 3 0 8 0 uaddrrnd 24 41688 0 41659 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 41688 0 41659 1 0 1 1 0 8 0 vmmpekpl 168 184605 0 184548 3 0 3 3 0 8 0 vmmpepl 168 2251179 0 2249085 297 202 95 118 0 357 1 vmsppl 464 41687 0 41659 5 1 4 5 0 8 0 rwobjpl 56 459662 0 452339 112 8 104 104 0 8 0 pdppl 4096 83384 0 83318 2352 2282 70 82 0 8 4 pvpl 32 45338 0 0 366 0 366 366 0 265 0 pmappl 248 41687 0 41659 3 1 2 3 0 8 0 extentpl 40 56 0 38 1 0 1 1 0 8 0 phpool 112 3173 0 2367 24 0 24 24 0 8 0 ddb{0}> machine ddbcpu 0 Invalid cpu 0 ddb{0}> trace db_enter() at db_enter+0x1c sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff82856368) at panic+0x17b sys/kern/subr_prf.c:198 uvm_fault_unwire_locked(fffffd806a057af8,20000000,20001000) at uvm_fault_unwire_locked+0x321 sys/uvm/uvm_fault.c:1663 uvm_fault_unwire(fffffd806a057af8,20000000,20001000) at uvm_fault_unwire+0x43 sys/uvm/uvm_fault.c:1623 sys_sysctl(ffff80002a27dd50,ffff8000345a0cd0,ffff8000345a0d20) at sys_sysctl+0x239 sys/kern/kern_sysctl.c:259 syscall(ffff8000345a0da0) at syscall+0x4e6 sys/arch/amd64/amd64/trap.c:606 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x6e8fbba5680, count: -7 ddb{0}> machine ddbcpu 1 Stopped at x86_ipi_db+0x1e: addq $0x8,%rsp x86_ipi_db(ffff800029d3bff0) at x86_ipi_db+0x1e sys/arch/amd64/amd64/db_interface.c:393 x86_ipi_handler() at x86_ipi_handler+0xb7 sys/arch/amd64/amd64/ipi.c:106 Xresume_lapic_ipi() at Xresume_lapic_ipi+0x27 __mp_lock(ffffffff82d11170) at __mp_lock+0x122 __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff82d11170) at __mp_lock+0x122 sys/kern/kern_lock.c:147 __mp_acquire_count(ffffffff82d11170,1) at __mp_acquire_count+0x48 sys/kern/kern_lock.c:227 mi_switch() at mi_switch+0x46d sys/kern/sched_bsd.c:470 sleep_finish(0,1) at sleep_finish+0x19b sys/kern/kern_synch.c:414 biowait(fffffd806993c160) at biowait+0x91 sys/kern/vfs_bio.c:1278 bwrite(fffffd806993c160) at bwrite+0x21c sys/kern/vfs_bio.c:769 ufs_dirremove(fffffd806bb92618,fffffd806b8e3000,800c,1) at ufs_dirremove+0x28f ufs_rmdir(ffff80002bd14208) at ufs_rmdir+0x247 sys/ufs/ufs/ufs_vnops.c:1315 VOP_RMDIR(fffffd806bb92618,fffffd806ae775f8,ffff80002bd142e8) at VOP_RMDIR+0x12a sys/kern/vfs_vops.c:407 dounlinkat(ffff80002a2597f8,ffffff9c,7e9a53311ea0,8) at dounlinkat+0x20e sys/kern/vfs_syscalls.c:1880 syscall(ffff80002bd14460) at syscall+0x4e6 sys/arch/amd64/amd64/trap.c:606 end trace frame: 0xffff80002bd144e0, count: 0 ddb{1}> trace x86_ipi_db(ffff800029d3bff0) at x86_ipi_db+0x1e sys/arch/amd64/amd64/db_interface.c:393 x86_ipi_handler() at x86_ipi_handler+0xb7 sys/arch/amd64/amd64/ipi.c:106 Xresume_lapic_ipi() at Xresume_lapic_ipi+0x27 __mp_lock(ffffffff82d11170) at __mp_lock+0x122 __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff82d11170) at __mp_lock+0x122 sys/kern/kern_lock.c:147 __mp_acquire_count(ffffffff82d11170,1) at __mp_acquire_count+0x48 sys/kern/kern_lock.c:227 mi_switch() at mi_switch+0x46d sys/kern/sched_bsd.c:470 sleep_finish(0,1) at sleep_finish+0x19b sys/kern/kern_synch.c:414 biowait(fffffd806993c160) at biowait+0x91 sys/kern/vfs_bio.c:1278 bwrite(fffffd806993c160) at bwrite+0x21c sys/kern/vfs_bio.c:769 ufs_dirremove(fffffd806bb92618,fffffd806b8e3000,800c,1) at ufs_dirremove+0x28f ufs_rmdir(ffff80002bd14208) at ufs_rmdir+0x247 sys/ufs/ufs/ufs_vnops.c:1315 VOP_RMDIR(fffffd806bb92618,fffffd806ae775f8,ffff80002bd142e8) at VOP_RMDIR+0x12a sys/kern/vfs_vops.c:407 dounlinkat(ffff80002a2597f8,ffffff9c,7e9a53311ea0,8) at dounlinkat+0x20e sys/kern/vfs_syscalls.c:1880 syscall(ffff80002bd14460) at syscall+0x4e6 sys/arch/amd64/amd64/trap.c:606 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7e9a53311e90, count: -15