panic: ffs_valloc: dup alloc Stopped at db_enter+0x25: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND 290504 18332 0 0 0x4000000 1 syz-executor *177163 70828 0 0x2 0 0K syz-executor db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438 panic(ffffffff8349897d) at panic+0x1e5 sys/kern/subr_prf.c:198 ffs_inode_alloc(fffffd807ca9f4b0,41ed,fffffd80097fd0d0,ffff80002a2a7d48) at ffs_inode_alloc+0x94e ufs_mkdir(ffff80002a2a7db0) at ufs_mkdir+0xfc sys/ufs/ufs/ufs_vnops.c:1112 VOP_MKDIR(fffffd806d67f620,ffff80002a2a7f10,ffff80002a2a7f40,ffff80002a2a7e40) at VOP_MKDIR+0x101 sys/kern/vfs_vops.c:394 domkdirat(ffff8000ffffc7d0,ffffff9c,789496f5db60,1ff) at domkdirat+0x179 sys/kern/vfs_syscalls.c:3149 syscall(ffff80002a2a80c0) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80002a2a80c0) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x789496f5dc00, 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}> trace db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438 panic(ffffffff8349897d) at panic+0x1e5 sys/kern/subr_prf.c:198 ffs_inode_alloc(fffffd807ca9f4b0,41ed,fffffd80097fd0d0,ffff80002a2a7d48) at ffs_inode_alloc+0x94e ufs_mkdir(ffff80002a2a7db0) at ufs_mkdir+0xfc sys/ufs/ufs/ufs_vnops.c:1112 VOP_MKDIR(fffffd806d67f620,ffff80002a2a7f10,ffff80002a2a7f40,ffff80002a2a7e40) at VOP_MKDIR+0x101 sys/kern/vfs_vops.c:394 domkdirat(ffff8000ffffc7d0,ffffff9c,789496f5db60,1ff) at domkdirat+0x179 sys/kern/vfs_syscalls.c:3149 syscall(ffff80002a2a80c0) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80002a2a80c0) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x789496f5dc00, count: -8 ddb{0}> show registers rdi 0 rsi 0x1 rbp 0xffff80002a2a7ac0 rbx 0xffffffff83929e07 cpu_info_full_primary+0x2e07 rdx 0 rcx 0xffff8000ffffc7d0 rax 0xffffffff83928ff0 cpu_info_full_primary+0x1ff0 r8 0x101010101010101 r9 0x8080808080808080 r10 0x35d45566fcce2fb3 r11 0xc9239478e25d98cd r12 0xffffffff83929c08 cpu_info_full_primary+0x2c08 r13 0 r14 0 r15 0x1 rip 0xffffffff8270b8e5 db_enter+0x25 cs 0x8 rflags 0x246 rsp 0xffff80002a2a7ab0 ss 0x10 db_enter+0x25: addq $0x8,%rsp ddb{0}> show proc PROC (syz-executor) tid=177163 pid=70828 tcnt=1 stat=onproc flags process=2 proc=0 runpri=17, usrpri=86, slppri=17, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff80002a222a70,0xffff8000ffffcfa8 process=0xffff8000ffff04e0 user=0xffff80002a2a3000, vmspace=0xfffffd806e810b80 estcpu=36, cpticks=40, pctcpu=0.16, user=0, sys=40, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 18332 141587 32248 0 2 0 syz-executor 18332 290504 32248 0 7 0x4000000 syz-executor 18332 499691 32248 0 3 0x4000080 fsleep syz-executor 27579 363097 33478 60929 3 0x90 nanoslp syz-executor 27579 185240 33478 60929 3 0x4000090 kqsel syz-executor 75285 509753 9679 0 3 0x82 piperd syz-executor 64185 101353 9679 0 3 0x82 piperd syz-executor 58785 503129 0 0 3 0x14280 nfsidl nfsio 266 97558 0 0 3 0x14280 nfsidl nfsio 66177 75643 0 0 3 0x14280 nfsidl nfsio 57357 213622 0 0 3 0x14280 nfsidl nfsio 42701 338956 0 0 3 0x14280 nfsidl nfsio 39729 497282 0 0 3 0x14280 nfsidl nfsio 46097 403722 0 0 3 0x14280 nfsidl nfsio 55816 370797 0 0 3 0x14280 nfsidl nfsio 57183 467874 0 0 3 0x14280 nfsidl nfsio 44094 451095 0 0 3 0x14280 nfsidl nfsio 21673 319179 0 0 3 0x14280 nfsidl nfsio 14802 244284 0 0 3 0x14280 nfsidl nfsio 73590 3920 0 0 3 0x14280 nfsidl nfsio 97868 493562 0 0 3 0x14280 nfsidl nfsio 19022 14075 0 0 3 0x14280 nfsidl nfsio 27300 391247 0 0 3 0x14280 nfsidl nfsio 27011 95512 0 0 3 0x14280 nfsidl nfsio 59404 342023 0 0 3 0x14280 nfsidl nfsio 13703 14651 0 0 3 0x14280 nfsidl nfsio 55665 183732 0 0 3 0x14280 nfsidl nfsio 33478 52328 9679 0 2 0xc82 syz-executor 88636 374756 9679 0 3 0x82 piperd syz-executor 32248 304808 9679 0 3 0x82 nanoslp syz-executor 18082 295055 9679 0 3 0x82 piperd syz-executor *70828 177163 9679 0 7 0x2 syz-executor 9679 431010 36965 0 3 0x82 wait syz-executor 36965 115627 68354 0 3 0x10008a sigsusp ksh 68354 184963 39377 0 3 0x98 kqread sshd-session 39377 103245 8594 0 3 0x92 kqread sshd-session 35504 517245 1 0 3 0x100083 ttyin getty 8594 336448 1 0 3 0x88 kqread sshd 77306 330300 54361 74 3 0x1100092 bpf pflogd 54361 499805 1 0 3 0x80 sbwait pflogd 37197 66628 30857 73 3 0x1100090 kqread syslogd 30857 445345 1 0 3 0x100082 sbwait syslogd 32695 262040 1 0 3 0x100080 kqread resolvd 18802 131403 68024 77 3 0x100092 kqread dhcpleased 3549 10543 68024 77 3 0x100092 kqread dhcpleased 68024 377727 1 0 3 0x80 kqread dhcpleased 21981 512693 0 0 3 0x14200 bored smr 5874 438756 0 0 3 0x14200 pgzero zerothread 84733 456786 0 0 3 0x14200 aiodoned aiodoned 63164 65923 0 0 3 0x14200 syncer update 27281 46964 0 0 3 0x14200 cleaner cleaner 29671 389566 0 0 3 0x14200 reaper reaper 65550 35872 0 0 3 0x14200 pgdaemon pagedaemon 91277 162976 0 0 3 0x14200 bored viomb 17066 122677 0 0 3 0x40014200 acpi0 acpi0 6507 23415 0 0 3 0x40014200 idle1 15913 265858 0 0 3 0x14200 bored softnet1 32180 472004 0 0 3 0x14200 bored softnet0 41340 189601 0 0 3 0x14200 bored systqmp 8784 170530 0 0 3 0x14200 bored systq 91712 86890 0 0 2 0x14200 softclockmp 72346 483195 0 0 3 0x40014200 tmoslp softclock 17837 239920 0 0 3 0x40014200 idle0 1 118827 0 0 3 0x82 wait init 0 0 -1 0 3 0x10010200 scheduler swapper ddb{0}> show all locks Process 18332 (syz-executor) thread 0xffff8000383b9248 (290504) exclusive rrwlock inode r = 0 (0xfffffd806eddadc8) #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+0x12b sys/kern/vfs_lookup.c:431 #6 namei+0x7c5 sys/kern/vfs_lookup.c:250 #7 domknodat+0xb4 sys/kern/vfs_syscalls.c:1617 #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 Process 70828 (syz-executor) thread 0xffff8000ffffc7d0 (177163) exclusive rrwlock inode r = 0 (0xfffffd805c83d0c8) #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 (0xfffffd807ca9f550) #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+0x12b 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 (0xffffffff83a3b680) #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{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 11074 12159K 12345K 166960K 12724 0 pcb 17 14K 14K 166960K 181 0 rtable 251 10K 11K 166960K 524 0 pf 35 17K 25K 166960K 132 0 ifaddr 40 7K 8K 166960K 72 0 ifgroup 51 2K 2K 166960K 110 0 sysctl 4 1K 9K 166960K 9 0 counters 68 36K 37K 166960K 122 0 ioctlops 0 0K 4K 166960K 1624 0 iov 0 0K 16K 166960K 23 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1355 85K 86K 166960K 1968 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 9K 166960K 13 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 0K 166960K 36 0 dirhash 12 2K 2K 166960K 18 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 12 41K 102K 166960K 652 0 sigio 0 0K 0K 166960K 5 0 proc 72 115K 196K 166960K 684 0 subproc 72 4K 4K 166960K 90 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 162 0 in_multi 88 6K 7K 166960K 134 0 ether_multi 1 0K 0K 166960K 6 0 mrt 0 0K 0K 166960K 23 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 127 572K 572K 166960K 127 0 exec 0 0K 1K 166960K 459 0 fusefs mount 1 32K 32K 166960K 1 0 pfkey data 0 0K 0K 166960K 1 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 196 166K 185K 166960K 7522 0 UVM aobj 23 2K 2K 166960K 26 0 pinsyscall 37 74K 106K 166960K 1893 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 30 0 NDP 11 0K 2K 166960K 50 0 temp 61 9119K 9184K 166960K 31141 0 kqueue 13 20K 28K 166960K 127 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 26 0 0 1 0 1 1 0 8 0 rtpcb 120 77 0 74 1 0 1 1 0 8 0 rtentry 176 139 0 36 6 0 6 6 0 8 0 unpcb 144 317 0 300 5 1 4 4 0 8 3 syncache 336 10 0 10 1 1 0 1 0 8 0 tcpcb 736 228 0 224 10 3 7 7 0 8 6 arp 136 23 0 6 1 0 1 1 0 8 0 inpcb 328 613 0 606 7 0 7 7 0 8 6 nd6 152 31 0 10 1 0 1 1 0 8 0 pkpcb 40 2 0 2 1 1 0 1 0 8 0 kcovpl 48 10 0 2 1 0 1 1 0 8 0 ppxss 1192 19 0 19 1 0 1 1 0 8 1 pfstscr 40 4 0 4 1 0 1 1 0 8 1 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 1005 5 0 5 5 0 8 0 pfosfpen 112 1428 0 714 21 0 21 21 0 8 0 pfrktable 1344 1 0 1 1 1 0 1 0 8 0 pfsrclim 320 1 0 1 1 1 0 1 0 8 0 pfanchor 1288 3 0 0 1 0 1 1 0 8 0 pfstitem 24 60 0 4 1 0 1 1 0 8 0 pfstkey 128 65 0 9 2 0 2 2 0 8 0 pfstate 448 62 0 7 7 0 7 7 0 8 0 pfrule 1360 27 0 22 2 1 1 2 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 569 0 142 30 0 30 30 0 8 2 art_table 40 570 0 142 5 0 5 5 0 8 0 art_node 32 138 0 44 1 0 1 1 0 8 0 sysvmsgpl 40 8 0 2 1 0 1 1 0 8 0 semupl 112 1 0 1 1 1 0 1 0 8 0 semapl 64 34 0 24 1 0 1 1 0 8 0 shmpl 112 23 0 3 1 0 1 1 0 8 0 dirhash 1024 21 0 4 3 0 3 3 0 8 0 dino2pl 256 2600 0 1141 93 0 93 93 0 8 0 ffsino 296 2600 0 1141 114 0 114 114 0 8 0 nchpl 144 3467 0 1768 64 0 64 64 0 8 0 rtmask 32 7 0 7 1 0 1 1 0 8 1 vnodes 216 2986 0 0 166 0 166 166 0 8 0 namei 1024 12411 0 12409 2 1 1 2 0 8 0 percpumem 16 76 0 27 1 0 1 1 0 8 0 kstatmem 264 63 0 38 4 1 3 3 0 8 1 scsiplug 72 6 0 6 1 1 0 1 0 8 0 scxspl 216 11322 0 11322 9 7 2 8 1 8 2 plimitpl 152 86 0 69 1 0 1 1 0 8 0 sigapl 424 990 0 928 8 0 8 8 0 8 0 knotepl 120 576 0 0 18 0 18 18 0 8 0 kqueuepl 224 256 0 245 5 0 5 5 0 8 3 pipepl 344 198 0 171 6 0 6 6 0 8 3 fdescpl 528 953 0 927 3 0 3 3 0 8 0 filepl 160 5749 0 5539 16 0 16 16 0 8 5 lockfpl 104 147 0 144 1 0 1 1 0 8 0 lockfspl 48 66 0 63 1 0 1 1 0 8 0 sessionpl 144 45 0 36 1 0 1 1 0 8 0 pgrppl 48 59 0 42 1 0 1 1 0 8 0 ucredpl 104 1089 0 1075 1 0 1 1 0 8 0 zombiepl 144 929 0 928 1 0 1 1 0 8 0 processpl 1232 990 0 928 6 0 6 6 0 8 0 procpl 664 1796 0 1731 8 0 8 8 0 8 1 sockpl 752 1031 0 1004 12 1 11 11 0 8 8 mcl64k 65536 3 0 0 1 0 1 1 0 8 0 mcl16k 16384 3 0 0 1 0 1 1 0 8 0 mcl8k 8192 1 0 0 1 0 1 1 0 8 0 mcl4k 4096 126 0 0 16 0 16 16 0 8 0 mcl2k 2048 19 0 0 3 0 3 3 0 8 0 mtagpl 96 2 0 0 1 0 1 1 0 8 0 mbufpl 256 172 0 0 11 0 11 11 0 8 0 bufpl 280 3430 0 111 238 0 238 238 0 8 0 anonpl 32 8745 0 0 72 1 71 71 0 246 0 amapchunkpl 152 24185 0 23834 31 1 30 31 0 158 9 amappl16 200 3256 0 3227 24 10 14 19 0 8 8 amappl15 192 43 0 43 1 1 0 1 0 8 0 amappl14 184 462 0 460 1 0 1 1 0 8 0 amappl13 176 133 0 121 1 0 1 1 0 8 0 amappl12 168 1214 0 1189 2 0 2 2 0 8 0 amappl11 160 9 0 8 2 1 1 1 0 8 0 amappl10 152 67 0 53 1 0 1 1 0 8 0 amappl9 144 323 0 322 1 0 1 1 0 8 0 amappl8 136 110 0 108 1 0 1 1 0 8 0 amappl7 128 163 0 150 1 0 1 1 0 8 0 amappl6 120 181 0 180 1 0 1 1 0 8 0 amappl5 112 105 0 94 1 0 1 1 0 8 0 amappl4 104 318 0 294 1 0 1 1 0 8 0 amappl3 96 4870 0 4786 4 0 4 4 0 8 0 amappl2 88 587 0 526 2 0 2 2 0 8 0 amappl1 80 13268 0 12678 18 2 16 17 0 8 0 amappl 88 6661 0 6536 5 0 5 5 0 92 0 uvmvnodes 80 115 0 0 3 0 3 3 0 8 0 dma16384 16384 1 0 1 1 0 1 1 0 8 1 dma4096 4096 1 0 1 1 1 0 1 0 8 0 dma1024 1024 3 0 2 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 2 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 52 0 51 1 0 1 1 0 8 0 aobjpl 72 25 0 3 1 0 1 1 0 8 0 uaddrrnd 24 953 0 927 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 953 0 927 1 0 1 1 0 8 0 vmmpekpl 168 9937 0 9889 3 0 3 3 0 8 0 vmmpepl 168 70055 0 68395 101 0 101 101 0 357 8 vmsppl 488 952 0 927 5 0 5 5 0 8 0 rwobjpl 80 22109 0 21072 30 0 30 30 0 8 2 pdppl 4096 1913 0 1854 111 40 71 85 0 8 12 pvpl 32 16028 0 0 130 0 130 130 0 265 0 pmappl 256 952 0 927 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 300 0 48 8 0 8 8 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:438 panic(ffffffff8349897d) at panic+0x1e5 sys/kern/subr_prf.c:198 ffs_inode_alloc(fffffd807ca9f4b0,41ed,fffffd80097fd0d0,ffff80002a2a7d48) at ffs_inode_alloc+0x94e ufs_mkdir(ffff80002a2a7db0) at ufs_mkdir+0xfc sys/ufs/ufs/ufs_vnops.c:1112 VOP_MKDIR(fffffd806d67f620,ffff80002a2a7f10,ffff80002a2a7f40,ffff80002a2a7e40) at VOP_MKDIR+0x101 sys/kern/vfs_vops.c:394 domkdirat(ffff8000ffffc7d0,ffffff9c,789496f5db60,1ff) at domkdirat+0x179 sys/kern/vfs_syscalls.c:3149 syscall(ffff80002a2a80c0) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80002a2a80c0) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x789496f5dc00, count: -8 ddb{0}> machine ddbcpu 1 Stopped at x86_ipi_db+0x27: addq $0x8,%rsp x86_ipi_db(ffff80002999dff0) 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 __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x54 kd_curproc sys/dev/kcov.c:585 [inline] __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x54 sys/dev/kcov.c:153 __mp_lock(ffffffff83a3ae80) at __mp_lock+0x1a3 __mp_lock_spin sys/kern/kern_lock.c:142 [inline] __mp_lock(ffffffff83a3ae80) at __mp_lock+0x1a3 sys/kern/kern_lock.c:173 __mp_acquire_count(ffffffff83a3ae80,1) at __mp_acquire_count+0x58 sys/kern/kern_lock.c:-1 sleep_finish(ffffffffffffffff,1) at sleep_finish+0x2d8 sys/kern/kern_synch.c:369 biowait(fffffd8067d94b08) at biowait+0xc6 sys/kern/vfs_bio.c:1242 ffs_bufatoff(fffffd806eddad28,0,0,ffff80003c40d3d0) at ffs_bufatoff+0x16f sys/ufs/ffs/ffs_subr.c:71 ufs_lookup() at ufs_lookup+0x58e sys/ufs/ufs/ufs_lookup.c:256 VOP_LOOKUP(fffffd8067ea6628,ffff80003c40d718,ffff80003c40d748) at VOP_LOOKUP+0x6e sys/kern/vfs_vops.c:85 vfs_lookup(ffff80003c40d6e8) at vfs_lookup+0x963 sys/kern/vfs_lookup.c:580 namei(ffff80003c40d6e8) at namei+0x7c5 sys/kern/vfs_lookup.c:250 domknodat(ffff8000383b9248,ffffff9c,200000000040,6000,e02) at domknodat+0xb4 sys/kern/vfs_syscalls.c:1617 end trace frame: 0xffff80003c40d8d0, count: 0 ddb{1}> trace x86_ipi_db(ffff80002999dff0) 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 __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x54 kd_curproc sys/dev/kcov.c:585 [inline] __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x54 sys/dev/kcov.c:153 __mp_lock(ffffffff83a3ae80) at __mp_lock+0x1a3 __mp_lock_spin sys/kern/kern_lock.c:142 [inline] __mp_lock(ffffffff83a3ae80) at __mp_lock+0x1a3 sys/kern/kern_lock.c:173 __mp_acquire_count(ffffffff83a3ae80,1) at __mp_acquire_count+0x58 sys/kern/kern_lock.c:-1 sleep_finish(ffffffffffffffff,1) at sleep_finish+0x2d8 sys/kern/kern_synch.c:369 biowait(fffffd8067d94b08) at biowait+0xc6 sys/kern/vfs_bio.c:1242 ffs_bufatoff(fffffd806eddad28,0,0,ffff80003c40d3d0) at ffs_bufatoff+0x16f sys/ufs/ffs/ffs_subr.c:71 ufs_lookup() at ufs_lookup+0x58e sys/ufs/ufs/ufs_lookup.c:256 VOP_LOOKUP(fffffd8067ea6628,ffff80003c40d718,ffff80003c40d748) at VOP_LOOKUP+0x6e sys/kern/vfs_vops.c:85 vfs_lookup(ffff80003c40d6e8) at vfs_lookup+0x963 sys/kern/vfs_lookup.c:580 namei(ffff80003c40d6e8) at namei+0x7c5 sys/kern/vfs_lookup.c:250 domknodat(ffff8000383b9248,ffffff9c,200000000040,6000,e02) at domknodat+0xb4 sys/kern/vfs_syscalls.c:1617 syscall(ffff80003c40d8e0) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c40d8e0) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x9561f8fdcf0, count: -16