panic: ufs_rename: lost dir entry Stopped at db_enter+0x1c: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND 309602 42962 0 0 0 0 syz-executor.4 *482663 43229 0 0 0x4000000 1K syz-executor.7 db_enter() at db_enter+0x1c sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff82877afb) at panic+0x17b sys/kern/subr_prf.c:198 ufs_rename(ffff800030b2a1b8) at ufs_rename+0x1412 VOP_RENAME(fffffd80677518b8,fffffd8068167870,ffff800030b2a388,fffffd807b912c20,0,ffff800030b2a2d8) at VOP_RENAME+0xf4 sys/kern/vfs_vops.c:370 dorenameat(ffff80002a1d4298,ffffff9c,200001c0,ffffff9c,20000200) at dorenameat+0x2a0 sys/kern/vfs_syscalls.c:2990 syscall(ffff800030b2a520) at syscall+0x533 mi_syscall sys/sys/syscall_mi.h:183 [inline] syscall(ffff800030b2a520) at syscall+0x533 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x491d5e9d510, 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{1}> ddb{1}> set $lines = 0 ddb{1}> set $maxwidth = 0 ddb{1}> show panic *cpu1: ufs_rename: lost dir entry ddb{1}> trace db_enter() at db_enter+0x1c sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff82877afb) at panic+0x17b sys/kern/subr_prf.c:198 ufs_rename(ffff800030b2a1b8) at ufs_rename+0x1412 VOP_RENAME(fffffd80677518b8,fffffd8068167870,ffff800030b2a388,fffffd807b912c20,0,ffff800030b2a2d8) at VOP_RENAME+0xf4 sys/kern/vfs_vops.c:370 dorenameat(ffff80002a1d4298,ffffff9c,200001c0,ffffff9c,20000200) at dorenameat+0x2a0 sys/kern/vfs_syscalls.c:2990 syscall(ffff800030b2a520) at syscall+0x533 mi_syscall sys/sys/syscall_mi.h:183 [inline] syscall(ffff800030b2a520) at syscall+0x533 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x491d5e9d510, count: -7 ddb{1}> show registers rdi 0 rsi 0x1 rbp 0xffff800030b29f30 rbx 0xffff800029cfccb7 rdx 0 rcx 0xffff80002a1d4298 rax 0xffff800029cfbff0 r8 0x101010101010101 r9 0x8080808080808080 r10 0xd2822f0d02d4086f r11 0xd07026903853948d r12 0xffff800029cfcab8 r13 0 r14 0 r15 0x1 rip 0xffffffff8159ce2c db_enter+0x1c cs 0x8 rflags 0x246 rsp 0xffff800030b29f20 ss 0 db_enter+0x1c: addq $0x8,%rsp ddb{1}> show proc PROC (syz-executor.7) tid=482663 pid=43229 tcnt=4 stat=onproc flags process=0 proc=4000000 runpri=17, usrpri=83, slppri=17, nice=20 wchan=0x0, wmesg=, ps_single=0x0 forw=0xffffffffffffffff, list=0xffff80002a1dcd50,0xffff80002a1d3808 process=0xffff80002a1911d0 user=0xffff800030b25000, vmspace=0xfffffd8074104aa0 estcpu=36, cpticks=0, pctcpu=0.0, user=0, sys=0, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 28422 38028 76479 0 3 0x80 nanoslp syz-executor.2 28422 9859 76479 0 3 0x4000080 fsleep syz-executor.2 99620 393189 46230 0 2 0 syz-executor.5 99620 252063 46230 0 3 0x4000080 fsleep syz-executor.5 42962 309602 45440 0 7 0 syz-executor.4 42962 201076 45440 0 2 0x4000000 syz-executor.4 43229 256029 95083 0 2 0 syz-executor.7 43229 95144 95083 0 3 0x4000000 inode syz-executor.7 43229 413295 95083 0 2 0x4000000 syz-executor.7 *43229 482663 95083 0 7 0x4000000 syz-executor.7 13944 370180 83363 0 2 0 syz-executor.3 48160 71932 58647 0 2 0 syz-executor.0 48160 174374 58647 0 2 0x4000000 syz-executor.0 48160 199223 58647 0 3 0x4000080 fsleep syz-executor.0 83363 409981 2777 0 2 0x2 syz-executor.3 7110 166156 2777 0 3 0x82 nanoslp syz-executor.6 12500 318935 1 0 3 0x100083 ttyin getty 95083 217214 2777 0 3 0x82 nanoslp syz-executor.7 76479 62578 2777 0 3 0x82 nanoslp syz-executor.2 58647 56030 2777 0 3 0x82 nanoslp syz-executor.0 28344 262002 0 0 3 0x14280 nfsidl nfsio 21653 31909 0 0 3 0x14280 nfsidl nfsio 94626 74590 0 0 3 0x14280 nfsidl nfsio 97966 87072 0 0 3 0x14280 nfsidl nfsio 27971 53089 0 0 3 0x14280 nfsidl nfsio 6210 89099 0 0 3 0x14280 nfsidl nfsio 21441 233101 0 0 3 0x14280 nfsidl nfsio 85972 458211 0 0 3 0x14280 nfsidl nfsio 17284 518901 0 0 3 0x14280 nfsidl nfsio 55052 2201 0 0 3 0x14280 nfsidl nfsio 88022 117291 0 0 3 0x14280 nfsidl nfsio 33954 497428 0 0 3 0x14280 nfsidl nfsio 69634 293267 0 0 3 0x14280 nfsidl nfsio 53728 360288 0 0 3 0x14280 nfsidl nfsio 99387 483504 0 0 3 0x14280 nfsidl nfsio 5128 443321 0 0 3 0x14280 nfsidl nfsio 10539 312688 0 0 3 0x14280 nfsidl nfsio 55813 489267 0 0 3 0x14280 nfsidl nfsio 65096 365180 0 0 3 0x14280 nfsidl nfsio 89927 247862 0 0 3 0x14280 nfsidl nfsio 46230 334146 2777 0 3 0x82 nanoslp syz-executor.5 45440 154849 2777 0 3 0x82 nanoslp syz-executor.4 70739 265005 2777 0 3 0x82 nanoslp syz-executor.1 48770 411639 0 0 3 0x14200 bored sosplice 2777 129193 23419 0 3 0x2000082 kqread syz-fuzzer 2777 345023 23419 0 3 0x6000082 thrsleep syz-fuzzer 2777 14486 23419 0 3 0x6000082 wait syz-fuzzer 2777 417510 23419 0 3 0x6000082 thrsleep syz-fuzzer 2777 87937 23419 0 3 0x6000082 wait syz-fuzzer 2777 113097 23419 0 3 0x6000082 wait syz-fuzzer 2777 99110 23419 0 3 0x6000082 wait syz-fuzzer 2777 40776 23419 0 3 0x6000082 wait syz-fuzzer 2777 31796 23419 0 3 0x6000082 thrsleep syz-fuzzer 2777 47377 23419 0 3 0x6000082 wait syz-fuzzer 2777 333790 23419 0 3 0x6000082 thrsleep syz-fuzzer 2777 437605 23419 0 3 0x6000082 wait syz-fuzzer 2777 332495 23419 0 3 0x6000082 thrsleep syz-fuzzer 2777 203968 23419 0 3 0x6000082 thrsleep syz-fuzzer 2777 424320 23419 0 3 0x6000082 wait syz-fuzzer 2777 397562 23419 0 3 0x6000082 thrsleep syz-fuzzer 23419 501001 75532 0 3 0x10008a sigsusp ksh 75532 465865 10316 0 3 0x9a kqread sshd 10316 25273 1 0 3 0x88 kqread sshd 6422 462308 80584 74 3 0x1100092 bpf pflogd 80584 323318 1 0 3 0x80 netio pflogd 89486 462291 67500 73 3 0x1100090 kqread syslogd 67500 499414 1 0 3 0x100082 netio syslogd 34311 205870 1 0 3 0x100080 kqread resolvd 18578 475665 0 0 3 0x14200 bored smr 71323 143395 0 0 2 0x14200 zerothread 44021 362623 0 0 3 0x14200 aiodoned aiodoned 54129 135001 0 0 3 0x14200 syncer update 49555 149856 0 0 3 0x14200 cleaner cleaner 87910 455469 0 0 3 0x14200 reaper reaper 78710 88436 0 0 3 0x14200 pgdaemon pagedaemon 56873 263801 0 0 3 0x14200 bored viomb 55603 211502 0 0 3 0x40014200 acpi0 acpi0 71188 24636 0 0 3 0x40014200 idle1 82864 439258 0 0 3 0x14200 bored softnet3 93057 360867 0 0 3 0x14200 bored softnet2 86482 467316 0 0 3 0x14200 bored softnet1 39688 179471 0 0 3 0x14200 bored softnet0 47104 186716 0 0 3 0x14200 bored systqmp 70996 225363 0 0 3 0x14200 bored systq 35238 170012 0 0 3 0x14200 tmoslp softclockmp 95047 117490 0 0 3 0x40014200 tmoslp softclock 6712 201787 0 0 3 0x40014200 idle0 1 190138 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{1}> show all locks Process 43229 (syz-executor.7) thread 0xffff80002a1dcd50 (413295) exclusive rrwlock inode r = 0 (0xfffffd807b2f2d68) #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 dorenameat+0x7f sys/kern/vfs_syscalls.c:2946 #8 syscall+0x533 mi_syscall sys/sys/syscall_mi.h:183 [inline] #8 syscall+0x533 sys/arch/amd64/amd64/trap.c:577 #9 Xsyscall+0x128 Process 43229 (syz-executor.7) thread 0xffff80002a1d4298 (482663) exclusive rrwlock inode r = 0 (0xfffffd807b2f2e78) #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:1201 #8 ufs_lookup+0x1323 sys/ufs/ufs/ufs_lookup.c:478 #9 VOP_LOOKUP+0x5c sys/kern/vfs_vops.c:85 #10 vfs_relookup+0xb4 sys/kern/vfs_lookup.c:787 #11 ufs_rename+0x120a sys/ufs/ufs/ufs_vnops.c:1022 #12 VOP_RENAME+0xf4 sys/kern/vfs_vops.c:370 #13 dorenameat+0x2a0 sys/kern/vfs_syscalls.c:2990 #14 syscall+0x533 mi_syscall sys/sys/syscall_mi.h:183 [inline] #14 syscall+0x533 sys/arch/amd64/amd64/trap.c:577 #15 Xsyscall+0x128 exclusive rrwlock inode r = 0 (0xfffffd807b2f24e8) #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_relookup+0x57 sys/kern/vfs_lookup.c:778 #6 ufs_rename+0x120a sys/ufs/ufs/ufs_vnops.c:1022 #7 VOP_RENAME+0xf4 sys/kern/vfs_vops.c:370 #8 dorenameat+0x2a0 sys/kern/vfs_syscalls.c:2990 #9 syscall+0x533 mi_syscall sys/sys/syscall_mi.h:183 [inline] #9 syscall+0x533 sys/arch/amd64/amd64/trap.c:577 #10 Xsyscall+0x128 exclusive kernel_lock &kernel_lock r = 0 (0xffffffff82d6fc20) #0 witness_lock+0x447 #1 __mp_acquire_count+0x48 sys/kern/kern_lock.c:227 #2 mi_switch+0x46f sys/kern/sched_bsd.c:470 #3 sleep_finish+0x19b sys/kern/kern_synch.c:414 #4 biowait+0x91 sys/kern/vfs_bio.c:1254 #5 bwrite+0x21c sys/kern/vfs_bio.c:766 #6 VOP_BWRITE+0x4e sys/kern/vfs_vops.c:640 #7 ufs_direnter+0x646 sys/ufs/ufs/ufs_lookup.c:833 #8 ufs_rename+0xb2d sys/ufs/ufs/ufs_vnops.c:922 #9 VOP_RENAME+0xf4 sys/kern/vfs_vops.c:370 #10 dorenameat+0x2a0 sys/kern/vfs_syscalls.c:2990 #11 syscall+0x533 mi_syscall sys/sys/syscall_mi.h:183 [inline] #11 syscall+0x533 sys/arch/amd64/amd64/trap.c:577 #12 Xsyscall+0x128 ddb{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10224 6510K 7405K 166960K 33805 0 pcb 15 20K 24K 166960K 1627 0 rtable 221 15K 16K 166960K 2724 0 pf 36 10K 11K 166960K 287 0 ifaddr 44 15K 16K 166960K 289 0 ifgroup 61 2K 2K 166960K 485 0 sysctl 3 0K 0K 166960K 7 0 counters 68 36K 37K 166960K 280 0 ioctlops 0 0K 4K 166960K 2352 0 iov 0 0K 32K 166960K 2012 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1592 100K 100K 166960K 9549 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 9K 166960K 184 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 0K 166960K 2541 0 dirhash 12 2K 2K 166960K 60 0 ACPI 1697 195K 286K 166960K 12548 0 file desc 16 57K 85K 166960K 17507 0 sigio 0 0K 0K 166960K 891 0 proc 69 67K 127K 166960K 2313 0 subproc 104 6K 6K 166960K 647 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 1164 0 in_multi 88 6K 7K 166960K 678 0 ether_multi 1 0K 0K 166960K 8 0 mrt 1 0K 0K 166960K 4 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 235 1049K 1049K 166960K 235 0 exec 0 0K 1K 166960K 2367 0 pfkey data 0 0K 0K 166960K 10 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 476 477K 481K 166960K 171354 0 UVM aobj 113 4K 4K 166960K 117 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 1K 166960K 639 0 NDP 14 0K 2K 166960K 217 0 temp 76 6708K 7348K 166960K 109533 0 kqueue 6 10K 28K 166960K 1167 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 24 0 0 1 0 1 1 0 8 0 rtpcb 120 752 0 751 8 7 1 3 0 8 0 rtentry 112 723 0 624 5 1 4 4 0 8 0 unpcb 144 15976 0 15964 135 129 6 8 0 8 5 syncache 320 153 0 153 23 23 0 1 0 8 0 sackhl 24 3 0 3 3 3 0 1 0 8 0 tcpqe 32 610 0 610 23 23 0 2 0 8 0 tcpcb 808 5586 0 5573 153 145 8 15 0 8 5 arp 120 139 0 123 1 0 1 1 0 8 0 inpcb 376 15345 0 15332 231 213 18 18 0 8 15 nd6 136 152 0 131 1 0 1 1 0 8 0 pkpcb 40 35 0 35 12 12 0 1 0 8 0 kcovpl 48 48 0 40 1 0 1 1 0 8 0 ppxss 1168 16 0 15 2 1 1 1 0 8 0 pffrag 232 67 0 61 7 6 1 1 0 482 0 pffrnode 88 66 0 60 7 6 1 1 0 8 0 pffrent 40 328 0 322 9 8 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 24 514 0 481 1 0 1 1 0 8 0 pfstkey 128 516 0 483 2 0 2 2 0 8 0 pfstate 376 516 0 483 11 6 5 6 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 2593 0 2176 54 26 28 32 0 8 0 art_table 32 2594 0 2176 5 1 4 5 0 8 0 art_node 16 692 0 603 1 0 1 1 0 8 0 sysvmsgpl 40 9 0 6 1 0 1 1 0 8 0 semapl 112 2539 0 2529 1 0 1 1 0 8 0 shmpl 112 114 0 4 4 0 4 4 0 8 0 dirhash 1024 49 0 32 3 0 3 3 0 8 0 dino2pl 256 24051 0 22534 95 0 95 95 0 8 0 ffsino 272 24051 0 22534 102 0 102 102 0 8 0 nchpl 144 47123 0 45463 63 0 63 63 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 154063 0 154059 9 8 1 2 0 8 0 percpumem 16 154 0 106 1 0 1 1 0 8 0 vcpupl 2048 74 0 0 10 0 10 10 0 8 0 vmpool 696 154 0 80 7 0 7 7 0 8 0 kstatmem 264 240 0 212 3 0 3 3 0 8 0 scxspl 216 134168 0 134168 35 34 1 8 1 8 1 plimitpl 152 2184 0 2169 1 0 1 1 0 8 0 sigapl 424 17795 0 17728 11 3 8 9 0 8 0 futexpl 64 135530 0 135527 4 3 1 1 0 8 0 knotepl 120 957 0 0 13 2 11 11 0 8 0 kqueuepl 216 3335 0 3330 65 64 1 5 0 8 0 pipepl 320 3007 0 2979 92 86 6 11 0 8 3 fdescpl 496 17728 0 17702 13 9 4 5 0 8 0 filepl 152 106096 0 105871 163 147 16 20 0 8 3 lockfpl 104 5347 0 5346 5 4 1 2 0 8 0 lockfspl 48 2138 0 2137 1 0 1 1 0 8 0 sessionpl 144 66 0 50 1 0 1 1 0 8 0 pgrppl 48 628 0 612 1 0 1 1 0 8 0 ucredpl 104 14660 0 14648 1 0 1 1 0 8 0 zombiepl 144 17730 0 17728 2 1 1 1 0 8 0 processpl 1136 17795 0 17728 7 2 5 6 0 8 0 procpl 680 47822 0 47732 11 2 9 10 0 8 0 srpgc 96 64 0 64 19 19 0 1 0 8 0 sosppl 168 191 0 191 18 18 0 1 0 8 0 sockpl 584 32120 0 32092 247 233 14 23 0 8 10 mcl64k 65536 49 0 0 7 4 3 3 0 8 0 mcl16k 16384 26 0 0 4 1 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 26 0 0 3 0 3 3 0 8 0 mcl4k 4096 73 0 0 5 1 4 4 0 8 0 mcl2k2 2112 17 0 0 2 0 2 2 0 8 0 mcl2k 2048 434 0 0 33 8 25 33 0 8 0 mtagpl 96 966 0 0 20 1 19 19 0 8 0 mbufpl 256 1957 0 0 99 0 99 99 0 8 0 bufpl 280 28729 0 22410 452 0 452 452 0 8 0 anonpl 24 1709848 0 1695822 226 117 109 119 0 186 0 amapchunkpl 152 538552 0 537645 80 41 39 49 0 158 1 amappl16 200 34208 0 33784 150 115 35 36 0 8 8 amappl15 192 41 0 41 3 3 0 1 0 8 0 amappl14 184 319 0 298 4 2 2 2 0 8 0 amappl13 176 82 0 81 2 1 1 1 0 8 0 amappl12 168 19000 0 18964 4 2 2 3 0 8 0 amappl11 160 58 0 50 1 0 1 1 0 8 0 amappl10 152 89 0 73 2 1 1 1 0 8 0 amappl9 144 268 0 267 1 0 1 1 0 8 0 amappl8 136 908 0 745 8 2 6 7 0 8 0 amappl7 128 367 0 342 3 1 2 3 0 8 0 amappl6 120 988 0 968 1 0 1 1 0 8 0 amappl5 112 414 0 406 1 0 1 1 0 8 0 amappl4 104 927 0 880 2 0 2 2 0 8 0 amappl3 96 105713 0 105622 4 1 3 4 0 8 0 amappl2 88 18902 0 18834 3 1 2 3 0 8 0 amappl1 80 73149 0 72686 23 11 12 23 0 8 0 amappl 88 170061 0 169789 7 0 7 7 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 72 116 0 4 3 0 3 3 0 8 0 uaddrrnd 24 17882 0 17782 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 17882 0 17782 1 0 1 1 0 8 0 vmmpekpl 168 127286 0 127186 6 1 5 5 0 8 0 vmmpepl 168 1049703 0 1047346 422 293 129 161 0 357 1 vmsppl 448 17881 0 17782 14 2 12 12 0 8 0 rwobjpl 56 253721 0 246117 116 4 112 112 0 8 0 pdppl 4096 35771 0 35638 794 657 137 137 0 8 4 pvpl 32 44046 0 0 357 1 356 356 0 265 0 pmappl 248 17881 0 17782 8 1 7 7 0 8 0 extentpl 40 56 0 38 1 0 1 1 0 8 0 phpool 112 1649 0 1090 16 0 16 16 0 8 0 ddb{1}> machine ddbcpu 0 Stopped at x86_ipi_db+0x1e: addq $0x8,%rsp x86_ipi_db(ffffffff82ce7ff0) 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(ffffffff82d6fa18) at __mp_lock+0x122 __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff82d6fa18) at __mp_lock+0x122 sys/kern/kern_lock.c:147 softintr_dispatch(0) at softintr_dispatch+0x52 sys/arch/amd64/amd64/softintr.c:88 Xsoftclock() at Xsoftclock+0x27 end of kernel end trace frame: 0x7ed4543b95b0, count: 9 ddb{0}> trace x86_ipi_db(ffffffff82ce7ff0) 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(ffffffff82d6fa18) at __mp_lock+0x122 __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff82d6fa18) at __mp_lock+0x122 sys/kern/kern_lock.c:147 softintr_dispatch(0) at softintr_dispatch+0x52 sys/arch/amd64/amd64/softintr.c:88 Xsoftclock() at Xsoftclock+0x27 end of kernel end trace frame: 0x7ed4543b95b0, count: -6 ddb{0}> machine ddbcpu 1 Stopped at db_enter+0x1c: addq $0x8,%rsp db_enter() at db_enter+0x1c sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff82877afb) at panic+0x17b sys/kern/subr_prf.c:198 ufs_rename(ffff800030b2a1b8) at ufs_rename+0x1412 VOP_RENAME(fffffd80677518b8,fffffd8068167870,ffff800030b2a388,fffffd807b912c20,0,ffff800030b2a2d8) at VOP_RENAME+0xf4 sys/kern/vfs_vops.c:370 dorenameat(ffff80002a1d4298,ffffff9c,200001c0,ffffff9c,20000200) at dorenameat+0x2a0 sys/kern/vfs_syscalls.c:2990 syscall(ffff800030b2a520) at syscall+0x533 mi_syscall sys/sys/syscall_mi.h:183 [inline] syscall(ffff800030b2a520) at syscall+0x533 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x491d5e9d510, count: 8 ddb{1}> trace db_enter() at db_enter+0x1c sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff82877afb) at panic+0x17b sys/kern/subr_prf.c:198 ufs_rename(ffff800030b2a1b8) at ufs_rename+0x1412 VOP_RENAME(fffffd80677518b8,fffffd8068167870,ffff800030b2a388,fffffd807b912c20,0,ffff800030b2a2d8) at VOP_RENAME+0xf4 sys/kern/vfs_vops.c:370 dorenameat(ffff80002a1d4298,ffffff9c,200001c0,ffffff9c,20000200) at dorenameat+0x2a0 sys/kern/vfs_syscalls.c:2990 syscall(ffff800030b2a520) at syscall+0x533 mi_syscall sys/sys/syscall_mi.h:183 [inline] syscall(ffff800030b2a520) at syscall+0x533 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x491d5e9d510, count: -7