panic: missing alias Stopped at db_enter+0x25: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND 284958 48745 0 0 0 1 syz-executor *291821 6706 0 0x2 0 0K syz-executor db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438 panic(ffffffff833d6f3a) at panic+0x1e5 sys/kern/subr_prf.c:198 vgonel(fffffd806c8a9050,ffff800035bb2a80) at vgonel+0x663 vrecycle(fffffd806c8a9050,ffff800035bb2a80) at vrecycle+0x7c sys/kern/vfs_subr.c:1136 ufs_inactive(ffff800035bb9690) at ufs_inactive+0x35c sys/ufs/ufs/ufs_inode.c:107 VOP_INACTIVE(fffffd806c8a9050,ffff800035bb2a80) at VOP_INACTIVE+0x104 sys/kern/vfs_vops.c:498 vput(fffffd806c8a9050) at vput+0xe5 sys/kern/vfs_subr.c:789 VOP_REMOVE(fffffd807c30e6d0,fffffd806c8a9050,ffff800035bb97f8) at VOP_REMOVE+0x199 sys/kern/vfs_vops.c:336 dounlinkat(ffff800035bb2a80,ffffff9c,767471ca9860,0) at dounlinkat+0x1c4 sys/kern/vfs_syscalls.c:1923 syscall(ffff800035bb9970) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff800035bb9970) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x767471ca9d10, count: 4 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: missing alias ddb{0}> trace db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438 panic(ffffffff833d6f3a) at panic+0x1e5 sys/kern/subr_prf.c:198 vgonel(fffffd806c8a9050,ffff800035bb2a80) at vgonel+0x663 vrecycle(fffffd806c8a9050,ffff800035bb2a80) at vrecycle+0x7c sys/kern/vfs_subr.c:1136 ufs_inactive(ffff800035bb9690) at ufs_inactive+0x35c sys/ufs/ufs/ufs_inode.c:107 VOP_INACTIVE(fffffd806c8a9050,ffff800035bb2a80) at VOP_INACTIVE+0x104 sys/kern/vfs_vops.c:498 vput(fffffd806c8a9050) at vput+0xe5 sys/kern/vfs_subr.c:789 VOP_REMOVE(fffffd807c30e6d0,fffffd806c8a9050,ffff800035bb97f8) at VOP_REMOVE+0x199 sys/kern/vfs_vops.c:336 dounlinkat(ffff800035bb2a80,ffffff9c,767471ca9860,0) at dounlinkat+0x1c4 sys/kern/vfs_syscalls.c:1923 syscall(ffff800035bb9970) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff800035bb9970) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x767471ca9d10, count: -11 ddb{0}> show registers rdi 0 rsi 0x1 rbp 0xffff800035bb94c0 rbx 0xffffffff8388be07 cpu_info_full_primary+0x2e07 rdx 0 rcx 0xffff800035bb2a80 rax 0xffffffff8388aff0 cpu_info_full_primary+0x1ff0 r8 0x101010101010101 r9 0x8080808080808080 r10 0x9911f0743d765441 r11 0x27f213ad911d24ce r12 0xffffffff8388bc08 cpu_info_full_primary+0x2c08 r13 0 r14 0 r15 0x1 rip 0xffffffff81087295 db_enter+0x25 cs 0x8 rflags 0x246 rsp 0xffff800035bb94b0 ss 0 db_enter+0x25: addq $0x8,%rsp ddb{0}> show proc PROC (syz-executor) tid=291821 pid=6706 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=0xffff800035bbc038,0xffff800035bbdcd0 process=0xffff80003c3f89c0 user=0xffff800035bb4000, vmspace=0xfffffd806c6f7d78 estcpu=36, cpticks=105, pctcpu=0.16, user=0, sys=105, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 48745 284958 55159 0 7 0 syz-executor 85996 156621 13646 0 2 0 syz-executor 28968 367702 28289 0 2 0 syz-executor 28968 55093 28289 0 2 0x4000000 syz-executor 67524 48824 28794 0 2 0 syz-executor 67524 247576 28794 0 3 0x4000080 lockf syz-executor 51818 387968 1662 0 2 0 syz-executor 51818 58266 1662 0 3 0x4000080 fsleep syz-executor 62477 161184 56043 0 2 0 syz-executor 62477 223285 56043 0 2 0x4000000 syz-executor 62477 76687 56043 0 3 0x4000080 fsleep syz-executor 62477 436470 56043 0 3 0x4000080 fsleep syz-executor 88824 320580 33618 -1 3 0x90 nanoslp syz-executor 88824 190216 33618 -1 3 0x4000090 kqsel syz-executor 88824 333252 33618 -1 3 0x4000090 fsleep syz-executor 73390 117583 0 0 3 0x14200 acct acct 81857 168487 1 0 3 0x100083 ttyin getty 28794 492324 50417 0 3 0x82 nanoslp syz-executor 56043 376720 50417 0 2 0x3 syz-executor * 6706 291821 50417 0 7 0x2 syz-executor 28289 465193 50417 0 3 0x82 nanoslp syz-executor 1662 128875 50417 0 3 0x82 nanoslp syz-executor 13646 178173 50417 0 3 0x82 nanoslp syz-executor 55159 405717 50417 0 2 0x3 syz-executor 33618 86794 50417 0 2 0x3 syz-executor 31363 504211 0 0 3 0x14280 nfsidl nfsio 2600 417981 0 0 3 0x14280 nfsidl nfsio 27677 203798 0 0 3 0x14280 nfsidl nfsio 3943 116517 0 0 3 0x14280 nfsidl nfsio 77413 118072 0 0 3 0x14280 nfsidl nfsio 89691 233822 0 0 3 0x14280 nfsidl nfsio 8556 196346 0 0 3 0x14280 nfsidl nfsio 40347 176669 0 0 3 0x14280 nfsidl nfsio 28662 273901 0 0 3 0x14280 nfsidl nfsio 86937 251437 0 0 3 0x14280 nfsidl nfsio 54919 245316 0 0 3 0x14280 nfsidl nfsio 42707 313489 0 0 3 0x14280 nfsidl nfsio 64012 268648 0 0 3 0x14280 nfsidl nfsio 13626 8448 0 0 3 0x14280 nfsidl nfsio 30100 346589 0 0 3 0x14280 nfsidl nfsio 88811 77164 0 0 3 0x14280 nfsidl nfsio 63450 216635 0 0 3 0x14280 nfsidl nfsio 77973 503055 0 0 3 0x14280 nfsidl nfsio 5818 219292 0 0 3 0x14280 nfsidl nfsio 64869 263106 0 0 3 0x14280 nfsidl nfsio 50417 398216 61402 0 3 0x82 kqread syz-executor 61402 108384 48261 0 3 0x10008a sigsusp ksh 48261 239732 65845 0 3 0x98 kqread sshd-session 65845 7561 46332 0 3 0x92 kqread sshd-session 46332 335495 1 0 3 0x88 kqread sshd 72327 421192 40167 74 3 0x1100092 bpf pflogd 40167 16904 1 0 3 0x80 sbwait pflogd 32506 408370 50119 73 3 0x1100090 kqread syslogd 50119 297116 1 0 3 0x100082 sbwait syslogd 36915 360849 1 0 3 0x100080 kqread resolvd 94892 376856 40030 77 3 0x100092 kqread dhcpleased 9242 440456 40030 77 3 0x100092 kqread dhcpleased 40030 316047 1 0 3 0x80 kqread dhcpleased 25221 490267 0 0 3 0x14200 bored smr 29864 132280 0 0 2 0x14200 zerothread 45308 65154 0 0 3 0x14200 aiodoned aiodoned 91971 401736 0 0 3 0x14200 syncer update 84194 439922 0 0 3 0x14200 cleaner cleaner 73525 279133 0 0 3 0x14200 reaper reaper 29234 521939 0 0 3 0x14200 pgdaemon pagedaemon 98781 216868 0 0 3 0x14200 bored viomb 15318 240749 0 0 3 0x40014200 acpi0 acpi0 91885 486164 0 0 3 0x40014200 idle1 24680 202129 0 0 3 0x14200 bored softnet1 3351 122396 0 0 3 0x14200 bored softnet0 99255 396203 0 0 3 0x14200 bored systqmp 89399 36013 0 0 3 0x14200 bored systq 70801 235198 0 0 3 0x14200 tmoslp softclockmp 84739 160853 0 0 3 0x40014200 tmoslp softclock 36712 323769 0 0 3 0x40014200 idle0 1 35235 0 0 3 0x80082 wait init 0 0 -1 0 3 0x10010200 scheduler swapper ddb{0}> show all locks Process 62477 (syz-executor) thread 0xffff8000fffeefa8 (223285) exclusive rwlock fdlock r = 0 (0xffff8000387cb720) #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 doopenat+0x179 sys/kern/vfs_syscalls.c:1122 #3 sys_openat+0x58 sys/kern/vfs_syscalls.c:1094 #4 syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline] #4 syscall+0xbd4 sys/arch/amd64/amd64/trap.c:783 #5 Xsyscall+0x128 Process 6706 (syz-executor) thread 0xffff800035bb2a80 (291821) exclusive kernel_lock &kernel_lock r = 0 (0xffffffff8396b100) #0 witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5f1 sys/kern/subr_witness.c:1160 #1 __mp_acquire_count+0x58 sys/kern/kern_lock.c:-1 #2 sleep_finish+0x2d8 sys/kern/kern_synch.c:369 #3 biowait+0xc6 sys/kern/vfs_bio.c:1242 #4 bwrite+0x2e7 sys/kern/vfs_bio.c:754 #5 ufs_dirremove+0x290 sys/ufs/ufs/ufs_lookup.c:919 #6 ufs_remove+0x1a7 sys/ufs/ufs/ufs_vnops.c:594 #7 VOP_REMOVE+0x172 sys/kern/vfs_vops.c:331 #8 dounlinkat+0x1c4 sys/kern/vfs_syscalls.c:1923 #9 syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] #9 syscall+0xb17 sys/arch/amd64/amd64/trap.c:783 #10 Xsyscall+0x128 exclusive rrwlock inode r = 0 (0xfffffd806e7cb450) #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:570 #5 vget+0x2a2 sys/kern/vfs_subr.c:686 #6 cache_lookup+0x351 sys/kern/vfs_cache.c:222 #7 ufs_lookup+0x1e3 sys/ufs/ufs/ufs_lookup.c:160 #8 VOP_LOOKUP+0x6e sys/kern/vfs_vops.c:85 #9 vfs_lookup+0x98a sys/kern/vfs_lookup.c:567 #10 namei+0x7ca sys/kern/vfs_lookup.c:250 #11 dounlinkat+0xc1 sys/kern/vfs_syscalls.c:1887 #12 syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] #12 syscall+0xb17 sys/arch/amd64/amd64/trap.c:783 #13 Xsyscall+0x128 ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 11132 12191K 13050K 166960K 15817 0 pcb 17 16K 24K 166960K 965 0 rtable 249 15K 17K 166960K 1108 0 pf 43 19K 19K 166960K 364 0 ifaddr 42 8K 10K 166960K 264 0 ifgroup 72 3K 3K 166960K 489 0 sysctl 4 1K 9K 166960K 30 0 counters 78 38K 39K 166960K 480 0 ioctlops 0 0K 4K 166960K 2209 0 iov 0 0K 20K 166960K 357 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1438 90K 91K 166960K 4356 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 13K 166960K 31 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 0K 166960K 241 0 dirhash 12 2K 3K 166960K 117 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 17 61K 240K 166960K 3596 0 sigio 0 0K 0K 166960K 126 0 proc 72 115K 164K 166960K 1237 0 subproc 72 4K 4K 166960K 185 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 486 0 in_multi 73 5K 7K 166960K 384 0 ether_multi 1 0K 0K 166960K 41 0 mrt 2 0K 0K 166960K 83 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 289 1288K 1288K 166960K 289 0 exec 0 0K 1K 166960K 1125 0 fusefs mount 1 32K 32K 166960K 1 0 pfkey data 0 0K 1K 166960K 7 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 230 159K 196K 166960K 33914 0 UVM aobj 73 38K 38K 166960K 74 0 pinsyscall 42 84K 105K 166960K 5208 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 1K 166960K 295 0 NDP 16 0K 2K 166960K 202 0 temp 76 9084K 9172K 166960K 155431 0 kqueue 13 20K 32K 166960K 673 0 SYN cache 2 8K 16K 166960K 3 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 120 336 0 333 2 1 1 2 0 8 0 rtentry 176 344 0 255 6 0 6 6 0 8 0 unpcb 144 2863 0 2846 18 14 4 6 0 8 3 syncache 336 24 0 24 6 5 1 1 0 8 1 tcpcb 736 855 0 851 12 10 2 4 0 8 1 arp 136 63 0 37 1 0 1 1 0 8 0 inpcb 328 4158 0 4151 34 27 7 10 0 8 6 ip6q 72 2 0 2 2 2 0 1 0 8 0 ip6af 40 4 0 4 2 2 0 1 0 8 0 nd6 152 72 0 51 2 0 2 2 0 8 0 pkpcb 40 24 0 24 5 4 1 1 0 8 1 kcovpl 48 20 0 12 1 0 1 1 0 8 0 ppxss 1192 147 0 147 2 1 1 1 0 8 1 pppxif 1504 15 0 15 6 6 0 1 0 8 0 pffrag 232 92 0 83 1 0 1 1 0 482 0 pffrnode 88 57 0 49 1 0 1 1 0 8 0 pffrent 40 182 0 172 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 pfstitem 24 192 0 108 1 0 1 1 0 8 0 pfstkey 128 192 0 108 3 0 3 3 0 8 0 pfstate 448 192 0 108 10 0 10 10 0 8 0 pfrule 1360 22 0 17 2 1 1 2 0 8 0 rttmr 136 11 0 11 6 5 1 1 0 8 1 art_heap8 4096 2 0 0 2 0 2 2 0 8 0 art_heap4 256 1543 0 1125 46 12 34 35 0 8 1 art_table 40 1545 0 1125 6 0 6 6 0 8 0 art_node 32 341 0 262 1 0 1 1 0 8 0 sysvmsgpl 40 9 0 5 1 0 1 1 0 8 0 semupl 112 3 0 3 2 2 0 1 0 8 0 semapl 112 234 0 224 1 0 1 1 0 8 0 shmpl 112 53 0 1 2 0 2 2 0 8 0 dirhash 1024 87 0 70 3 0 3 3 0 8 0 dino2pl 256 8566 0 7078 94 0 94 94 0 8 0 ffsino 296 8566 0 7078 117 1 116 116 0 8 0 nchpl 144 13351 0 11611 65 0 65 65 0 8 0 rtmask 32 29 0 29 4 4 0 1 0 8 0 vnodes 216 5926 0 0 330 0 330 330 0 8 0 namei 1024 47979 0 47979 3 2 1 2 0 8 1 percpumem 16 255 0 201 1 0 1 1 0 8 0 vcpupl 3968 18 0 0 3 0 3 3 0 8 0 vmpool 848 18 0 0 2 0 2 2 0 8 0 kstatmem 264 316 0 276 4 1 3 4 0 8 0 scsiplug 72 8 0 8 4 4 0 1 0 8 0 scxspl 216 76685 0 76685 12 11 1 8 1 8 1 plimitpl 152 936 0 919 1 0 1 1 0 8 0 sigapl 424 3913 0 3845 10 1 9 9 0 8 0 knotepl 120 862 0 0 25 0 25 25 0 8 0 kqueuepl 224 1575 0 1565 19 17 2 5 0 8 1 pipepl 344 460 0 433 3 0 3 3 0 8 0 fdescpl 528 3870 0 3839 3 0 3 3 0 8 0 filepl 160 27193 0 26981 25 10 15 15 0 8 1 lockfpl 104 1422 0 1417 2 1 1 2 0 8 0 lockfspl 48 595 0 591 1 0 1 1 0 8 0 sessionpl 144 56 0 47 1 0 1 1 0 8 0 pgrppl 48 116 0 99 1 0 1 1 0 8 0 ucredpl 104 5430 0 5416 1 0 1 1 0 8 0 zombiepl 144 5392 0 5392 1 0 1 1 0 8 1 processpl 1232 3913 0 3845 6 0 6 6 0 8 0 procpl 664 9776 0 9700 8 0 8 8 0 8 0 sosppl 176 30 0 30 6 5 1 1 0 8 1 sockpl 752 7508 0 7481 40 29 11 17 0 8 8 mcl64k 65536 17 0 0 3 0 3 3 0 8 0 mcl16k 16384 20 0 0 3 0 3 3 0 8 0 mcl12k 12288 5 0 0 1 0 1 1 0 8 0 mcl9k 9216 5 0 0 1 0 1 1 0 8 0 mcl8k 8192 8 0 0 1 0 1 1 0 8 0 mcl4k 4096 138 0 0 17 0 17 17 0 8 0 mcl2k2 2112 3 0 0 1 0 1 1 0 8 0 mcl2k 2048 64 0 0 6 0 6 6 0 8 0 mtagpl 96 4 0 0 1 0 1 1 0 8 0 mbufpl 256 772 0 0 46 1 45 45 0 8 0 bufpl 280 29327 0 23197 439 0 439 439 0 8 0 anonpl 32 12357 0 0 100 0 100 100 0 246 0 amapchunkpl 152 120313 0 119815 64 28 36 40 0 158 10 amappl16 200 10959 0 10919 62 47 15 28 0 8 6 amappl15 192 6 0 6 1 1 0 1 0 8 0 amappl14 184 580 0 579 1 0 1 1 0 8 0 amappl13 176 206 0 193 1 0 1 1 0 8 0 amappl12 168 4187 0 4158 2 0 2 2 0 8 0 amappl11 160 14 0 14 2 2 0 1 0 8 0 amappl10 152 64 0 50 1 0 1 1 0 8 0 amappl9 144 265 0 264 2 1 1 1 0 8 0 amappl8 136 154 0 151 1 0 1 1 0 8 0 amappl7 128 216 0 202 1 0 1 1 0 8 0 amappl6 120 283 0 282 1 0 1 1 0 8 0 amappl5 112 157 0 146 1 0 1 1 0 8 0 amappl4 104 431 0 410 1 0 1 1 0 8 0 amappl3 96 24677 0 24571 4 0 4 4 0 8 0 amappl2 88 935 0 873 2 0 2 2 0 8 0 amappl1 80 33488 0 32890 22 6 16 19 0 8 0 amappl 88 32200 0 32041 5 0 5 5 0 92 0 uvmvnodes 80 188 0 0 4 0 4 4 0 8 0 dma65536 65536 2 0 2 2 2 0 1 0 8 0 dma16384 16384 1 0 1 1 1 0 1 0 8 0 dma8192 8192 1 0 1 1 1 0 1 0 8 0 dma4096 4096 2 0 2 2 2 0 1 0 8 0 dma2048 2048 1 0 1 1 1 0 1 0 8 0 dma1024 1024 1 0 0 1 0 1 1 0 8 0 dma512 512 67 0 67 3 3 0 1 0 8 0 dma256 256 9 0 9 3 3 0 1 0 8 0 dma128 128 253 0 253 1 1 0 1 0 8 0 dma64 64 9 0 9 3 3 0 1 0 8 0 dma32 32 8 0 8 2 2 0 1 0 8 0 dma16 16 20 0 19 1 0 1 1 0 8 0 aobjpl 72 73 0 1 2 0 2 2 0 8 0 uaddrrnd 24 3870 0 3839 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 3870 0 3839 1 0 1 1 0 8 0 vmmpekpl 168 30252 0 30191 5 1 4 4 0 8 0 vmmpepl 168 258889 0 256969 146 42 104 117 0 357 5 vmsppl 488 3869 0 3839 5 0 5 5 0 8 0 rwobjpl 80 69475 0 68270 45 11 34 39 0 8 1 pdppl 4096 7783 0 7696 165 76 89 93 0 8 2 pvpl 32 19846 0 0 159 0 159 159 0 265 0 pmappl 256 3887 0 3839 4 0 4 4 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 437 0 120 10 0 10 10 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(ffffffff833d6f3a) at panic+0x1e5 sys/kern/subr_prf.c:198 vgonel(fffffd806c8a9050,ffff800035bb2a80) at vgonel+0x663 vrecycle(fffffd806c8a9050,ffff800035bb2a80) at vrecycle+0x7c sys/kern/vfs_subr.c:1136 ufs_inactive(ffff800035bb9690) at ufs_inactive+0x35c sys/ufs/ufs/ufs_inode.c:107 VOP_INACTIVE(fffffd806c8a9050,ffff800035bb2a80) at VOP_INACTIVE+0x104 sys/kern/vfs_vops.c:498 vput(fffffd806c8a9050) at vput+0xe5 sys/kern/vfs_subr.c:789 VOP_REMOVE(fffffd807c30e6d0,fffffd806c8a9050,ffff800035bb97f8) at VOP_REMOVE+0x199 sys/kern/vfs_vops.c:336 dounlinkat(ffff800035bb2a80,ffffff9c,767471ca9860,0) at dounlinkat+0x1c4 sys/kern/vfs_syscalls.c:1923 syscall(ffff800035bb9970) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff800035bb9970) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x767471ca9d10, count: -11 ddb{0}> machine ddbcpu 1 Stopped at x86_ipi_db+0x27: addq $0x8,%rsp x86_ipi_db(ffff8000299bdff0) 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+0x44 sys/dev/kcov.c:159 syscall(ffff80002a2d6800) at syscall+0xaf4 mi_syscall sys/sys/syscall_mi.h:175 [inline] syscall(ffff80002a2d6800) at syscall+0xaf4 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7ba0d0bacdc0, count: 9 ddb{1}> trace x86_ipi_db(ffff8000299bdff0) 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+0x44 sys/dev/kcov.c:159 syscall(ffff80002a2d6800) at syscall+0xaf4 mi_syscall sys/sys/syscall_mi.h:175 [inline] syscall(ffff80002a2d6800) at syscall+0xaf4 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7ba0d0bacdc0, count: -6