panic: ffs_valloc: dup alloc Stopped at db_enter+0x25: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND *433689 7291 0 0x2 0 1K syz-executor db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438 panic(ffffffff83499291) at panic+0x1e5 sys/kern/subr_prf.c:198 ffs_inode_alloc(fffffd806cc4ba80,41ed,fffffd80097fd618,ffff80002a301fb8) at ffs_inode_alloc+0x94e ufs_mkdir(ffff80002a302020) at ufs_mkdir+0xfc sys/ufs/ufs/ufs_vnops.c:1112 VOP_MKDIR(fffffd806c9b9628,ffff80002a302180,ffff80002a3021b0,ffff80002a3020b0) at VOP_MKDIR+0x101 sys/kern/vfs_vops.c:394 domkdirat(ffff8000ffffd230,ffffff9c,7723ecba7b80,1ff) at domkdirat+0x179 sys/kern/vfs_syscalls.c:3149 syscall(ffff80002a302330) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80002a302330) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7723ecba7c20, 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{1}> ddb{1}> set $lines = 0 ddb{1}> set $maxwidth = 0 ddb{1}> show panic *cpu1: ffs_valloc: dup alloc ddb{1}> trace db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438 panic(ffffffff83499291) at panic+0x1e5 sys/kern/subr_prf.c:198 ffs_inode_alloc(fffffd806cc4ba80,41ed,fffffd80097fd618,ffff80002a301fb8) at ffs_inode_alloc+0x94e ufs_mkdir(ffff80002a302020) at ufs_mkdir+0xfc sys/ufs/ufs/ufs_vnops.c:1112 VOP_MKDIR(fffffd806c9b9628,ffff80002a302180,ffff80002a3021b0,ffff80002a3020b0) at VOP_MKDIR+0x101 sys/kern/vfs_vops.c:394 domkdirat(ffff8000ffffd230,ffffff9c,7723ecba7b80,1ff) at domkdirat+0x179 sys/kern/vfs_syscalls.c:3149 syscall(ffff80002a302330) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80002a302330) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7723ecba7c20, count: -8 ddb{1}> show registers rdi 0 rsi 0x1 rbp 0xffff80002a301d30 rbx 0xffff80002999ee07 rdx 0 rcx 0xffff8000ffffd230 rax 0xffff80002999dff0 r8 0x101010101010101 r9 0x8080808080808080 r10 0xa2504bf666466d5c r11 0x604ed421b433656c r12 0xffff80002999ec08 r13 0 r14 0 r15 0x1 rip 0xffffffff82a35e95 db_enter+0x25 cs 0x8 rflags 0x246 rsp 0xffff80002a301d20 ss 0x10 db_enter+0x25: addq $0x8,%rsp ddb{1}> show proc PROC (syz-executor) tid=433689 pid=7291 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=0xffff8000ffffdc90,0xffff8000fffef250 process=0xffff8000ffff4008 user=0xffff80002a2fd000, vmspace=0xfffffd800b0633d0 estcpu=36, cpticks=23, pctcpu=0.12, user=0, sys=23, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 1239 317801 98876 0 2 0x2 sh 43646 42093 51241 0 2 0x3000 syz-executor 61757 344158 51804 0 3 0x80 nanoslp syz-executor 61757 231183 51804 0 3 0x4000080 kqsel syz-executor 61757 39534 51804 0 3 0x4000080 fsleep syz-executor 61757 270148 51804 0 3 0x4000080 fsleep syz-executor 98876 65077 82285 0 2 0x10000002 syz-executor 94424 389105 0 0 3 0x14280 nfsidl nfsio 83283 142341 0 0 3 0x14280 nfsidl nfsio 83079 493713 0 0 3 0x14280 nfsidl nfsio 43766 328614 0 0 3 0x14280 nfsidl nfsio 4360 56506 0 0 3 0x14280 nfsidl nfsio 15012 333262 0 0 3 0x14280 nfsidl nfsio 28129 406036 0 0 3 0x14280 nfsidl nfsio 1958 437822 0 0 3 0x14280 nfsidl nfsio 52944 373251 0 0 3 0x14280 nfsidl nfsio 26464 136320 0 0 3 0x14280 nfsidl nfsio 23279 158430 0 0 3 0x14280 nfsidl nfsio 3346 370939 0 0 3 0x14280 nfsidl nfsio 22757 233995 0 0 3 0x14280 nfsidl nfsio 38832 290895 0 0 3 0x14280 nfsidl nfsio 25646 245333 0 0 3 0x14280 nfsidl nfsio 58061 89892 0 0 3 0x14280 nfsidl nfsio 59207 229956 0 0 3 0x14280 nfsidl nfsio 77930 487430 0 0 3 0x14280 nfsidl nfsio 35959 214157 0 0 3 0x14280 nfsidl nfsio 56241 513859 0 0 3 0x14280 nfsidl nfsio 51241 3850 82285 0 3 0x82 nanoslp syz-executor * 7291 433689 82285 0 7 0x2 syz-executor 96779 190502 82285 0 3 0x82 nanoslp syz-executor 61625 205092 82285 0 3 0x82 nanoslp syz-executor 51804 257985 82285 0 3 0x82 nanoslp syz-executor 82285 202412 28881 0 3 0x82 wait syz-executor 28881 292046 34013 0 3 0x10008a sigsusp ksh 34013 306392 21163 0 3 0x98 kqread sshd-session 21163 372476 60281 0 3 0x92 kqread sshd-session 26888 340401 1 0 3 0x100083 ttyin getty 60281 204423 1 0 3 0x88 kqread sshd 300 410551 47176 74 3 0x1100092 bpf pflogd 47176 409378 1 0 3 0x80 sbwait pflogd 35419 399347 65572 73 3 0x1100090 kqread syslogd 65572 431793 1 0 3 0x100082 sbwait syslogd 30187 273832 1 0 3 0x100080 kqread resolvd 18985 51439 48090 77 3 0x100092 kqread dhcpleased 83753 413417 48090 77 3 0x100092 kqread dhcpleased 48090 320667 1 0 3 0x80 kqread dhcpleased 77724 68735 0 0 3 0x14200 bored smr 73720 508048 0 0 2 0x14200 zerothread 3332 335154 0 0 3 0x14200 aiodoned aiodoned 83709 88136 0 0 3 0x14200 syncer update 88255 448310 0 0 3 0x14200 cleaner cleaner 11075 161186 0 0 3 0x14200 reaper reaper 6007 483189 0 0 3 0x14200 pgdaemon pagedaemon 3111 275571 0 0 3 0x14200 bored viomb 56542 76448 0 0 3 0x40014200 acpi0 acpi0 77789 452884 0 0 3 0x40014200 idle1 61235 149092 0 0 3 0x14200 bored softnet1 63408 327785 0 0 3 0x14200 bored softnet0 29305 144369 0 0 3 0x14200 bored systqmp 81566 298870 0 0 3 0x14200 bored systq 65356 208043 0 0 3 0x14200 tmoslp softclockmp 45149 69920 0 0 3 0x40014200 tmoslp softclock 48731 458485 0 0 3 0x40014200 idle0 1 49289 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{1}> show all locks Process 7291 (syz-executor) thread 0xffff8000ffffd230 (433689) exclusive rrwlock inode r = 0 (0xfffffd806c6148d8) #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 ufs_ihashins+0x4f ufs_ihash sys/ufs/ufs/ufs_ihash.c:-1 [inline] #4 ufs_ihashins+0x4f sys/ufs/ufs/ufs_ihash.c:159 #5 ffs_vget+0x187 sys/ufs/ffs/ffs_vfsops.c:1232 #6 ffs_inode_alloc+0x279 sys/ufs/ffs/ffs_alloc.c:393 #7 ufs_mkdir+0xfc sys/ufs/ufs/ufs_vnops.c:1112 #8 VOP_MKDIR+0x101 sys/kern/vfs_vops.c:394 #9 domkdirat+0x179 sys/kern/vfs_syscalls.c:3149 #10 syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] #10 syscall+0xb17 sys/arch/amd64/amd64/trap.c:783 #11 Xsyscall+0x128 exclusive rrwlock inode r = 0 (0xfffffd806cc4bb20) #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 vfs_lookup+0x10f sys/kern/vfs_lookup.c:431 #6 namei+0x7c5 sys/kern/vfs_lookup.c:250 #7 domkdirat+0x8b sys/kern/vfs_syscalls.c:3134 #8 syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] #8 syscall+0xb17 sys/arch/amd64/amd64/trap.c:783 #9 Xsyscall+0x128 exclusive kernel_lock &kernel_lock r = 0 (0xffffffff83a52ec0) #0 witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5f1 sys/kern/subr_witness.c:1160 #1 syscall+0xaf4 mi_syscall sys/sys/syscall_mi.h:175 [inline] #1 syscall+0xaf4 sys/arch/amd64/amd64/trap.c:783 #2 Xsyscall+0x128 ddb{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 11061 12094K 12349K 166960K 12561 0 pcb 18 14K 16K 166960K 158 0 rtable 206 7K 8K 166960K 417 0 pf 34 17K 81K 166960K 95 0 ifaddr 35 5K 7K 166960K 55 0 ifgroup 51 2K 2K 166960K 81 0 sysctl 1 1K 9K 166960K 5 0 counters 68 36K 37K 166960K 84 0 ioctlops 0 0K 4K 166960K 1553 0 iov 0 0K 12K 166960K 16 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1294 81K 82K 166960K 1636 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 5K 166960K 7 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 0K 166960K 57 0 dirhash 12 2K 2K 166960K 15 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 13 45K 110K 166960K 482 0 sigio 0 0K 0K 166960K 5 0 proc 72 115K 164K 166960K 612 0 subproc 63 3K 4K 166960K 81 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 197 0 in_multi 73 5K 7K 166960K 118 0 ether_multi 1 0K 0K 166960K 2 0 mrt 1 0K 0K 166960K 11 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 79 360K 360K 166960K 79 0 exec 0 0K 1K 166960K 456 0 fusefs mount 1 32K 32K 166960K 1 0 pfkey data 0 0K 0K 166960K 2 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 202 150K 174K 166960K 6148 0 UVM aobj 13 2K 2K 166960K 14 0 pinsyscall 38 76K 104K 166960K 1618 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 19 0 NDP 11 0K 2K 166960K 35 0 temp 43 9112K 9179K 166960K 21091 0 kqueue 13 20K 29K 166960K 66 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 26 0 0 1 0 1 1 0 8 0 rtpcb 120 56 0 53 1 0 1 1 0 8 0 rtentry 176 122 0 35 6 0 6 6 0 8 0 unpcb 144 306 0 288 6 2 4 6 0 8 3 syncache 336 3 0 3 1 1 0 1 0 8 0 tcpcb 736 102 0 98 1 0 1 1 0 8 0 arp 136 19 0 5 1 0 1 1 0 8 0 inpcb 328 417 0 408 7 2 5 7 0 8 3 nd6 152 27 0 9 1 0 1 1 0 8 0 pkpcb 40 7 0 7 1 0 1 1 0 8 1 kcovpl 48 9 0 2 1 0 1 1 0 8 0 ppxss 1192 3 0 3 1 0 1 1 0 8 1 pfstscr 40 5 0 3 1 0 1 1 0 8 0 pffrag 232 2 0 0 1 0 1 1 0 482 0 pffrnode 88 2 0 0 1 0 1 1 0 8 0 pffrent 40 3 0 1 1 0 1 1 0 8 0 pfosfp 40 1428 0 1428 5 0 5 5 0 8 5 pfosfpen 112 1428 0 1428 21 0 21 21 0 8 21 pfrktable 1344 1 0 1 1 0 1 1 0 8 1 pfanchor 1288 3 0 0 1 0 1 1 0 8 0 pftag 88 1 0 0 1 0 1 1 0 8 0 pfstitem 24 55 0 3 1 0 1 1 0 8 0 pfstkey 128 57 0 3 2 0 2 2 0 8 0 pfstate 448 52 0 3 6 0 6 6 0 8 0 pfrule 1360 25 0 20 2 1 1 2 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 501 0 139 29 0 29 29 0 8 2 art_table 40 502 0 139 5 0 5 5 0 8 0 art_node 32 120 0 40 1 0 1 1 0 8 0 sysvmsgpl 40 8 0 4 1 0 1 1 0 8 0 semapl 64 55 0 45 1 0 1 1 0 8 0 shmpl 112 11 0 1 1 0 1 1 0 8 0 dirhash 1024 19 0 2 3 0 3 3 0 8 0 dino2pl 256 2174 0 709 92 0 92 92 0 8 0 ffsino 296 2174 0 709 114 1 113 114 0 8 0 nchpl 144 2870 0 1168 64 0 64 64 0 8 0 vnodes 216 2425 0 0 135 0 135 135 0 8 0 namei 1024 8755 0 8754 2 1 1 2 0 8 0 percpumem 16 57 0 8 1 0 1 1 0 8 0 kstatmem 264 39 0 14 2 0 2 2 0 8 0 scsiplug 72 2 0 2 1 0 1 1 0 8 1 scxspl 216 11615 0 11615 10 2 8 8 1 8 8 plimitpl 152 127 0 110 1 0 1 1 0 8 0 sigapl 424 805 0 740 8 0 8 8 0 8 0 knotepl 120 506 0 0 16 0 16 16 0 8 0 kqueuepl 224 170 0 160 5 0 5 5 0 8 4 pipepl 344 147 0 120 3 0 3 3 0 8 0 fdescpl 528 769 0 742 3 0 3 3 0 8 0 filepl 160 3744 0 3537 15 2 13 15 0 8 3 lockfpl 104 132 0 130 1 0 1 1 0 8 0 lockfspl 48 60 0 58 1 0 1 1 0 8 0 sessionpl 144 36 0 27 1 0 1 1 0 8 0 pgrppl 48 49 0 32 1 0 1 1 0 8 0 ucredpl 104 437 0 424 1 0 1 1 0 8 0 zombiepl 144 745 0 740 1 0 1 1 0 8 0 processpl 1232 805 0 740 6 0 6 6 0 8 0 procpl 664 1354 0 1286 8 0 8 8 0 8 0 sockpl 752 802 0 772 17 8 9 17 0 8 5 mcl64k 65536 7 0 0 1 0 1 1 0 8 0 mcl12k 12288 1 0 0 1 0 1 1 0 8 0 mcl8k 8192 1 0 0 1 0 1 1 0 8 0 mcl4k 4096 122 0 0 16 0 16 16 0 8 0 mcl2k 2048 22 0 0 3 0 3 3 0 8 0 mtagpl 96 4 0 0 1 0 1 1 0 8 0 mbufpl 256 165 0 0 11 0 11 11 0 8 0 bufpl 280 4100 0 105 286 0 286 286 0 8 0 anonpl 32 8032 0 0 65 0 65 65 0 246 0 amapchunkpl 152 19823 0 19447 30 0 30 30 0 158 10 amappl16 200 2586 0 2564 16 6 10 14 0 8 8 amappl15 192 5 0 5 1 1 0 1 0 8 0 amappl14 184 432 0 431 1 0 1 1 0 8 0 amappl13 176 118 0 106 1 0 1 1 0 8 0 amappl12 168 1124 0 1099 2 0 2 2 0 8 0 amappl11 160 8 0 7 2 1 1 1 0 8 0 amappl10 152 65 0 51 1 0 1 1 0 8 0 amappl9 144 276 0 276 1 1 0 1 0 8 0 amappl8 136 103 0 101 1 0 1 1 0 8 0 amappl7 128 151 0 138 1 0 1 1 0 8 0 amappl6 120 172 0 169 1 0 1 1 0 8 0 amappl5 112 95 0 85 1 0 1 1 0 8 0 amappl4 104 296 0 274 1 0 1 1 0 8 0 amappl3 96 3713 0 3625 4 0 4 4 0 8 0 amappl2 88 516 0 455 2 0 2 2 0 8 0 amappl1 80 10588 0 10011 15 1 14 15 0 8 1 amappl 88 5374 0 5242 5 0 5 5 0 92 0 uvmvnodes 80 113 0 0 3 0 3 3 0 8 0 dma16384 16384 1 0 1 1 1 0 1 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 128 254 0 254 2 1 1 1 0 8 1 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 20 0 19 1 0 1 1 0 8 0 aobjpl 72 13 0 1 1 0 1 1 0 8 0 uaddrrnd 24 770 0 743 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 770 0 743 1 0 1 1 0 8 0 vmmpekpl 168 7819 0 7768 3 0 3 3 0 8 0 vmmpepl 168 55609 0 53938 96 0 96 96 0 357 10 vmsppl 488 769 0 742 5 0 5 5 0 8 0 rwobjpl 80 17784 0 16784 28 1 27 27 0 8 1 pdppl 4096 1547 0 1484 101 28 73 83 0 8 10 pvpl 32 15367 0 0 125 1 124 125 0 265 0 pmappl 256 769 0 742 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 277 0 34 8 0 8 8 0 8 0 ddb{1}> machine ddbcpu 0 Stopped at x86_ipi_db+0x27: addq $0x8,%rsp x86_ipi_db(ffffffff839c1ff0) 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(ffffffff83a526c0) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:142 [inline] __mp_lock(ffffffff83a526c0) at __mp_lock+0x192 sys/kern/kern_lock.c:173 softintr_dispatch(0) at softintr_dispatch+0x125 sys/kern/kern_softintr.c:83 dosoftint(0) at dosoftint+0x54 sys/arch/amd64/amd64/intr.c:862 Xsoftclock() at Xsoftclock+0x27 __mp_lock(ffffffff83a526c0) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:142 [inline] __mp_lock(ffffffff83a526c0) at __mp_lock+0x192 sys/kern/kern_lock.c:173 exit1(ffff80003a3b8a80,0,0,1) at exit1+0x701 sys/kern/kern_exit.c:260 sys_exit(ffff80003a3b8a80,ffff80003c3dd460,ffff80003c3dd3b0) at sys_exit+0x1a sys/kern/kern_exit.c:-1 syscall(ffff80003c3dd460) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c3dd460) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7395a66c6630, count: 3 ddb{0}> trace x86_ipi_db(ffffffff839c1ff0) 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(ffffffff83a526c0) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:142 [inline] __mp_lock(ffffffff83a526c0) at __mp_lock+0x192 sys/kern/kern_lock.c:173 softintr_dispatch(0) at softintr_dispatch+0x125 sys/kern/kern_softintr.c:83 dosoftint(0) at dosoftint+0x54 sys/arch/amd64/amd64/intr.c:862 Xsoftclock() at Xsoftclock+0x27 __mp_lock(ffffffff83a526c0) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:142 [inline] __mp_lock(ffffffff83a526c0) at __mp_lock+0x192 sys/kern/kern_lock.c:173 exit1(ffff80003a3b8a80,0,0,1) at exit1+0x701 sys/kern/kern_exit.c:260 sys_exit(ffff80003a3b8a80,ffff80003c3dd460,ffff80003c3dd3b0) at sys_exit+0x1a sys/kern/kern_exit.c:-1 syscall(ffff80003c3dd460) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c3dd460) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7395a66c6630, count: -12 ddb{0}> machine ddbcpu 1 Stopped at db_enter+0x25: addq $0x8,%rsp db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438 panic(ffffffff83499291) at panic+0x1e5 sys/kern/subr_prf.c:198 ffs_inode_alloc(fffffd806cc4ba80,41ed,fffffd80097fd618,ffff80002a301fb8) at ffs_inode_alloc+0x94e ufs_mkdir(ffff80002a302020) at ufs_mkdir+0xfc sys/ufs/ufs/ufs_vnops.c:1112 VOP_MKDIR(fffffd806c9b9628,ffff80002a302180,ffff80002a3021b0,ffff80002a3020b0) at VOP_MKDIR+0x101 sys/kern/vfs_vops.c:394 domkdirat(ffff8000ffffd230,ffffff9c,7723ecba7b80,1ff) at domkdirat+0x179 sys/kern/vfs_syscalls.c:3149 syscall(ffff80002a302330) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80002a302330) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7723ecba7c20, count: 7 ddb{1}> trace db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438 panic(ffffffff83499291) at panic+0x1e5 sys/kern/subr_prf.c:198 ffs_inode_alloc(fffffd806cc4ba80,41ed,fffffd80097fd618,ffff80002a301fb8) at ffs_inode_alloc+0x94e ufs_mkdir(ffff80002a302020) at ufs_mkdir+0xfc sys/ufs/ufs/ufs_vnops.c:1112 VOP_MKDIR(fffffd806c9b9628,ffff80002a302180,ffff80002a3021b0,ffff80002a3020b0) at VOP_MKDIR+0x101 sys/kern/vfs_vops.c:394 domkdirat(ffff8000ffffd230,ffffff9c,7723ecba7b80,1ff) at domkdirat+0x179 sys/kern/vfs_syscalls.c:3149 syscall(ffff80002a302330) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80002a302330) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7723ecba7c20, count: -8