panic: kernel diagnostic assertion "ps->ps_uvncount == 0" failed: file "/syzkaller/managers/multicore/kernel/sys/kern/kern_unveil.c", line 188 Stopped at db_enter+0x1c: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND 97144 30039 0 0x2 0 1 syz-executor.4 db_enter() at db_enter+0x1c sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff82954a0f) at panic+0x17b sys/kern/subr_prf.c:198 __assert(ffffffff82906496,ffffffff828c2069,bc,ffffffff82884c65) at __assert+0x29 sys/kern/subr_prf.c:157 unveil_destroy(ffff8000373d4020) at unveil_destroy+0x174 sys/kern/kern_unveil.c:188 exit1(ffff80002a24b2b0,0,0,3) at exit1+0x3ef sys/kern/kern_exit.c:218 single_thread_check_locked(ffff80002a24b2b0,0,0) at single_thread_check_locked+0x237 sys/kern/kern_sig.c:2019 userret(ffff80002a24b2b0) at userret+0x7c single_thread_check sys/kern/kern_sig.c:2058 [inline] userret(ffff80002a24b2b0) at userret+0x7c sys/kern/kern_sig.c:1974 intr_user_exit() at intr_user_exit+0x3c end of kernel end trace frame: 0x767755b90ef0, 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: kernel diagnostic assertion "ps->ps_uvncount == 0" failed: file "/syzkaller/managers/multicore/kernel/sys/kern/kern_unveil.c", line 188 ddb{0}> trace db_enter() at db_enter+0x1c sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff82954a0f) at panic+0x17b sys/kern/subr_prf.c:198 __assert(ffffffff82906496,ffffffff828c2069,bc,ffffffff82884c65) at __assert+0x29 sys/kern/subr_prf.c:157 unveil_destroy(ffff8000373d4020) at unveil_destroy+0x174 sys/kern/kern_unveil.c:188 exit1(ffff80002a24b2b0,0,0,3) at exit1+0x3ef sys/kern/kern_exit.c:218 single_thread_check_locked(ffff80002a24b2b0,0,0) at single_thread_check_locked+0x237 sys/kern/kern_sig.c:2019 userret(ffff80002a24b2b0) at userret+0x7c single_thread_check sys/kern/kern_sig.c:2058 [inline] userret(ffff80002a24b2b0) at userret+0x7c sys/kern/kern_sig.c:1974 intr_user_exit() at intr_user_exit+0x3c end of kernel end trace frame: 0x767755b90ef0, count: -8 ddb{0}> show registers rdi 0 rsi 0x1 rbp 0xffff80002a258bb0 rbx 0xffffffff82c97cb7 cpu_info_full_primary+0x2cb7 rdx 0 rcx 0xffff80002a24b2b0 rax 0xffffffff82c96ff0 cpu_info_full_primary+0x1ff0 r8 0 r9 0x8080808080808080 r10 0xd5f10561a6ead6f2 r11 0x731c1d9861c93140 r12 0xffffffff82c97ab8 cpu_info_full_primary+0x2ab8 r13 0 r14 0 r15 0x1 rip 0xffffffff822e5afc db_enter+0x1c cs 0x8 rflags 0x246 rsp 0xffff80002a258ba0 ss 0 db_enter+0x1c: addq $0x8,%rsp ddb{0}> show proc PROC (syz-executor.3) tid=486956 pid=44795 tcnt=1 stat=onproc flags process=1008 proc=82000 runpri=17, usrpri=86, slppri=17, nice=20 wchan=0x0, wmesg=, ps_single=0xffff80002a24c548 forw=0xffffffffffffffff, list=0xffff80002a266550,0xffff80002a24caa8 process=0xffff8000373d4020 user=0xffff80002a253000, vmspace=0xfffffd806636b738 estcpu=36, cpticks=6, pctcpu=0.0, user=0, sys=1, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 45770 514626 76592 0 2 0 syz-executor.7 61976 37475 1070 0 2 0 syz-executor.1 92382 179250 97729 0 2 0x480 syz-executor.5 92382 9658 97729 0 3 0x4000080 fifow syz-executor.5 64478 43332 67144 0 2 0 syz-executor.2 64478 434938 67144 0 2 0x4000000 syz-executor.2 64478 166017 67144 0 2 0x4000000 syz-executor.2 76592 23031 64577 0 2 0x482 syz-executor.7 71331 122281 0 0 3 0x14280 nfsidl nfsio 5371 317843 0 0 3 0x14280 nfsidl nfsio 88905 510104 0 0 3 0x14280 nfsidl nfsio 90459 31040 0 0 3 0x14280 nfsidl nfsio 65114 97188 0 0 3 0x14280 nfsidl nfsio 98496 277551 0 0 3 0x14280 nfsidl nfsio 34078 250099 0 0 3 0x14280 nfsidl nfsio 35029 246688 0 0 3 0x14280 nfsidl nfsio 73474 63881 0 0 3 0x14280 nfsidl nfsio 56926 172095 0 0 3 0x14280 nfsidl nfsio 97721 289372 0 0 3 0x14280 nfsidl nfsio 65368 485393 0 0 3 0x14280 nfsidl nfsio 11447 221776 0 0 3 0x14280 nfsidl nfsio 28678 117204 0 0 3 0x14280 nfsidl nfsio 77532 147455 0 0 3 0x14280 nfsidl nfsio 31242 254793 0 0 3 0x14280 nfsidl nfsio 30567 308306 0 0 3 0x14280 nfsidl nfsio 72006 219125 0 0 3 0x14280 nfsidl nfsio 43479 41654 0 0 3 0x14280 nfsidl nfsio 92881 129595 0 0 3 0x14280 nfsidl nfsio 1070 127179 64577 0 2 0x482 syz-executor.1 67144 477072 64577 0 2 0x482 syz-executor.2 11671 122534 64577 0 2 0x482 syz-executor.3 63210 384452 1 0 3 0x18100083 ttyin getty 97729 357241 64577 0 2 0x482 syz-executor.5 47870 254074 64577 0 2 0x2 syz-executor.0 30039 97144 64577 0 7 0x2 syz-executor.4 39773 385221 64577 0 2 0x482 syz-executor.6 2923 399768 0 0 3 0x14200 bored sosplice 64577 177166 87503 0 3 0x1a000082 wait syz-fuzzer 64577 184312 87503 0 2 0x1e000482 syz-fuzzer 64577 166287 87503 0 3 0x1e000082 kqread syz-fuzzer 64577 245763 87503 0 3 0x1e000082 wait syz-fuzzer 64577 331006 87503 0 3 0x1e000082 thrsleep syz-fuzzer 64577 165178 87503 0 3 0x1e000082 wait syz-fuzzer 64577 228965 87503 0 3 0x1e000082 wait syz-fuzzer 64577 9220 87503 0 3 0x1e000082 thrsleep syz-fuzzer 64577 298257 87503 0 3 0x1e000082 thrsleep syz-fuzzer 64577 21552 87503 0 3 0x1e000082 wait syz-fuzzer 64577 330226 87503 0 3 0x1e000082 thrsleep syz-fuzzer 64577 81073 87503 0 3 0x1e000082 wait syz-fuzzer 64577 120984 87503 0 3 0x1e000082 thrsleep syz-fuzzer 64577 158170 87503 0 3 0x1e000082 thrsleep syz-fuzzer 64577 446891 87503 0 3 0x1e000082 wait syz-fuzzer 64577 14831 87503 0 3 0x1e000082 thrsleep syz-fuzzer 64577 386439 87503 0 3 0x1e000082 wait syz-fuzzer 87503 445401 48354 0 3 0x810008a sigsusp ksh 48354 238817 7507 0 3 0x1800009a kqread sshd 7507 368487 1 0 3 0x18000088 kqread sshd 38970 101784 71924 74 3 0x19100092 bpf pflogd 71924 462557 1 0 3 0x18000080 netio pflogd 18260 438922 70295 73 3 0x19100090 kqread syslogd 70295 2370 1 0 3 0x18100082 netio syslogd 50016 456435 1 0 3 0x18100080 kqread resolvd 94475 471854 87611 77 3 0x18100092 kqread dhcpleased 9879 477668 87611 77 3 0x18100092 kqread dhcpleased 87611 149119 1 0 3 0x18000080 kqread dhcpleased 82343 32350 0 0 3 0x14200 bored smr 88677 176595 0 0 2 0x14200 zerothread 26373 107099 0 0 3 0x14200 aiodoned aiodoned 21764 58076 0 0 3 0x14200 syncer update 28293 48745 0 0 3 0x14200 cleaner cleaner 28828 403219 0 0 3 0x14200 reaper reaper 95965 338654 0 0 3 0x14200 pgdaemon pagedaemon 88471 458793 0 0 3 0x14200 bored viomb 73804 218993 0 0 3 0x40014200 acpi0 acpi0 8818 357799 0 0 3 0x40014200 idle1 43407 289786 0 0 3 0x14200 bored softnet3 21226 450745 0 0 3 0x14200 bored softnet2 25363 279380 0 0 3 0x14200 bored softnet1 15912 39476 0 0 3 0x14200 bored softnet0 4606 356296 0 0 3 0x14200 bored systqmp 24155 115012 0 0 3 0x14200 bored systq 85075 234920 0 0 3 0x14200 tmoslp softclockmp 45009 182004 0 0 2 0x40014200 softclock 2086 205957 0 0 3 0x40014200 idle0 1 60977 0 0 3 0x8080082 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks Process 64478 (syz-executor.2) thread 0xffff80002a1e1550 (434938) Process 64478 (syz-executor.2) thread 0xffff80002a265d58 (166017) Process 47870 (syz-executor.0) thread 0xffff80002a266000 (254074) Process 30039 (syz-executor.4) thread 0xffff80002a2192c8 (97144) ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10226 6514K 15522K 166960K 79343 0 pcb 15 20K 25K 166960K 1080 0 rtable 195 6K 8K 166960K 4184 0 pf 38 10K 10K 166960K 399 0 ifaddr 40 15K 16K 166960K 315 0 ifgroup 67 2K 3K 166960K 533 0 sysctl 4 1K 1K 166960K 8 0 counters 68 36K 37K 166960K 410 0 ioctlops 0 0K 4K 166960K 2293 0 iov 0 0K 24K 166960K 1521 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1595 100K 100K 166960K 17781 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 9K 166960K 153 0 VM map 2 1K 1K 166960K 2 0 sem 11 1K 1K 166960K 17 0 dirhash 6 1K 2K 166960K 36 0 ACPI 1697 195K 286K 166960K 12548 0 file desc 14 49K 77K 166960K 21283 0 sigio 0 0K 0K 166960K 1115 0 proc 80 115K 127K 166960K 2622 0 subproc 104 6K 6K 166960K 435 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 1268 0 in_multi 64 4K 7K 166960K 505 0 ether_multi 1 0K 0K 166960K 7 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 217 970K 970K 166960K 217 0 exec 0 0K 1K 166960K 2045 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 507 544K 546K 166960K 207061 0 UVM aobj 131 4K 4K 166960K 134 0 pinsyscall 26 52K 108K 166960K 2097 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 400 0 NDP 14 0K 1K 166960K 256 0 temp 74 6812K 7448K 166960K 117991 0 kqueue 12 18K 28K 166960K 936 0 SYN cache 2 760K 768K 166960K 3 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 120 886 0 883 12 11 1 3 0 8 0 rtentry 112 1719 0 1633 4 0 4 4 0 8 0 unpcb 144 15934 0 15917 132 126 6 11 0 8 5 syncache 336 47 0 47 11 11 0 1 0 8 0 tcpqe 32 249 0 249 9 9 0 1 0 8 0 tcpcb 808 3059 0 3050 119 111 8 11 0 8 7 arp 120 495 0 481 1 0 1 1 0 8 0 inpcb 392 9930 0 9918 198 190 8 15 0 8 6 nd6 136 121 0 99 2 0 2 2 0 8 0 pkpcb 40 110 0 110 11 11 0 1 0 8 0 kcovpl 48 33 0 25 1 0 1 1 0 8 0 ppxss 1168 113 0 113 11 10 1 1 0 8 1 pffrag 232 68 0 64 7 6 1 1 0 482 0 pffrnode 88 67 0 63 7 6 1 1 0 8 0 pffrent 40 310 0 306 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 24 303 0 289 1 0 1 1 0 8 0 pfstkey 128 303 0 289 3 1 2 2 0 8 0 pfstate 376 303 0 289 9 6 3 4 0 8 0 pfrule 1344 21 0 16 2 1 1 2 0 8 0 art_heap8 4096 5 0 3 3 1 2 3 0 8 0 art_heap4 256 2612 0 2222 40 11 29 33 0 8 0 art_table 32 2617 0 2225 5 0 5 5 0 8 0 art_node 16 1708 0 1629 1 0 1 1 0 8 0 semupl 112 6 0 6 1 1 0 1 0 8 0 semapl 112 9 0 0 1 0 1 1 0 8 0 shmpl 112 131 0 3 4 0 4 4 0 8 0 dirhash 1024 33 0 29 3 1 2 3 0 8 0 dino2pl 256 31013 0 29428 100 0 100 100 0 8 0 ffsino 272 31013 0 29428 108 1 107 107 0 8 0 nchpl 144 61617 0 59882 67 0 67 67 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 189780 0 189778 9 7 2 3 0 8 1 percpumem 16 219 0 171 1 0 1 1 0 8 0 vcpupl 2048 70 0 0 9 0 9 9 0 8 0 vmpool 696 84 0 14 7 0 7 7 0 8 0 kstatmem 264 370 0 342 5 2 3 3 0 8 1 scxspl 216 191995 0 191995 39 38 1 8 1 8 1 plimitpl 152 1045 0 1029 1 0 1 1 0 8 0 sigapl 424 21763 0 21695 19 10 9 9 0 8 1 futexpl 64 165852 0 165851 3 2 1 1 0 8 0 knotepl 120 810 0 0 18 0 18 18 0 8 0 kqueuepl 216 2478 0 2470 46 45 1 8 0 8 0 pipepl 320 2306 0 2278 66 63 3 8 0 8 0 fdescpl 496 21532 0 21505 12 7 5 5 0 8 1 filepl 152 107705 0 107463 155 140 15 23 0 8 4 lockfpl 104 4302 0 4300 4 3 1 2 0 8 0 lockfspl 48 1736 0 1734 1 0 1 1 0 8 0 sessionpl 144 52 0 35 1 0 1 1 0 8 0 pgrppl 48 214 0 197 1 0 1 1 0 8 0 ucredpl 104 15092 0 15080 1 0 1 1 0 8 0 zombiepl 144 24154 0 24152 3 2 1 1 0 8 0 processpl 1136 21763 0 21695 6 0 6 6 0 8 0 procpl 680 57803 0 57716 17 7 10 10 0 8 1 srpgc 96 51 0 51 16 16 0 1 0 8 0 sosppl 168 81 0 79 13 12 1 1 0 8 0 sockpl 584 26888 0 26856 258 247 11 26 0 8 8 mcl64k 65536 25 0 0 4 1 3 3 0 8 0 mcl16k 16384 27 0 0 4 1 3 3 0 8 0 mcl12k 12288 25 0 0 2 0 2 2 0 8 0 mcl9k 9216 23 0 0 2 0 2 2 0 8 0 mcl8k 8192 50 0 0 4 1 3 3 0 8 0 mcl4k 4096 33 0 0 3 0 3 3 0 8 0 mcl2k2 2112 12 0 0 1 0 1 1 0 8 0 mcl2k 2048 406 0 0 36 15 21 36 0 8 0 mtagpl 96 579 0 0 10 1 9 9 0 8 0 mbufpl 256 1899 0 0 75 0 75 75 0 8 0 bufpl 280 48704 0 42435 450 1 449 449 0 8 0 anonpl 24 1966468 0 1952731 183 70 113 123 0 186 0 amapchunkpl 152 649419 0 648568 101 60 41 47 0 158 1 amappl16 200 39115 0 38599 126 95 31 41 0 8 0 amappl15 192 57 0 55 1 0 1 1 0 8 0 amappl14 184 251 0 234 2 1 1 2 0 8 0 amappl13 176 24 0 24 2 2 0 1 0 8 0 amappl12 168 22614 0 22579 3 1 2 2 0 8 0 amappl11 160 59 0 45 1 0 1 1 0 8 0 amappl10 152 117 0 99 1 0 1 1 0 8 0 amappl9 144 286 0 284 1 0 1 1 0 8 0 amappl8 136 780 0 623 6 0 6 6 0 8 0 amappl7 128 122 0 104 1 0 1 1 0 8 0 amappl6 120 827 0 801 2 1 1 2 0 8 0 amappl5 112 587 0 572 1 0 1 1 0 8 0 amappl4 104 1030 0 980 3 1 2 3 0 8 0 amappl3 96 129037 0 128958 3 0 3 3 0 8 0 amappl2 88 22560 0 22480 4 2 2 4 0 8 0 amappl1 80 84315 0 83771 23 11 12 23 0 8 0 amappl 88 205886 0 205613 8 0 8 8 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 72 133 0 3 3 0 3 3 0 8 0 uaddrrnd 24 21616 0 21518 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 21616 0 21518 1 0 1 1 0 8 0 vmmpekpl 168 152077 0 151986 5 0 5 5 0 8 0 vmmpepl 168 1248865 0 1246276 422 282 140 147 0 357 12 vmsppl 448 21615 0 21518 17 5 12 12 0 8 0 rwobjpl 56 298327 0 290503 121 7 114 114 0 8 0 pdppl 4096 43239 0 43106 612 473 139 141 0 8 6 pvpl 32 44940 0 0 364 1 363 364 0 265 0 pmappl 248 21615 0 21518 8 1 7 7 0 8 0 extentpl 40 56 0 38 1 0 1 1 0 8 0 phpool 112 1446 0 905 16 0 16 16 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(ffffffff82954a0f) at panic+0x17b sys/kern/subr_prf.c:198 __assert(ffffffff82906496,ffffffff828c2069,bc,ffffffff82884c65) at __assert+0x29 sys/kern/subr_prf.c:157 unveil_destroy(ffff8000373d4020) at unveil_destroy+0x174 sys/kern/kern_unveil.c:188 exit1(ffff80002a24b2b0,0,0,3) at exit1+0x3ef sys/kern/kern_exit.c:218 single_thread_check_locked(ffff80002a24b2b0,0,0) at single_thread_check_locked+0x237 sys/kern/kern_sig.c:2019 userret(ffff80002a24b2b0) at userret+0x7c single_thread_check sys/kern/kern_sig.c:2058 [inline] userret(ffff80002a24b2b0) at userret+0x7c sys/kern/kern_sig.c:1974 intr_user_exit() at intr_user_exit+0x3c end of kernel end trace frame: 0x767755b90ef0, count: -8 ddb{0}> machine ddbcpu 1 Stopped at x86_ipi_db+0x1e: addq $0x8,%rsp x86_ipi_db(ffff800029cebff0) 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(ffffffff82d700a8) at __mp_lock+0x122 __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff82d700a8) at __mp_lock+0x122 sys/kern/kern_lock.c:147 __mp_acquire_count(ffffffff82d700a8,1) at __mp_acquire_count+0x48 sys/kern/kern_lock.c:227 mi_switch() at mi_switch+0x494 sys/kern/sched_bsd.c:470 sleep_finish(0,1) at sleep_finish+0x19d sys/kern/kern_synch.c:414 biowait(fffffd806b378268) at biowait+0x91 sys/kern/vfs_bio.c:1254 bwrite(fffffd806b378268) at bwrite+0x1fb sys/kern/vfs_bio.c:766 ffs_update(fffffd8075c40008,1) at ffs_update+0x27f sys/ufs/ffs/ffs_inode.c:111 ffs_truncate(fffffd8075c40008,0,4,fffffd807f7d76e8) at ffs_truncate+0x987 ufs_rmdir(ffff80002f10c968) at ufs_rmdir+0x295 sys/ufs/ufs/ufs_vnops.c:1280 VOP_RMDIR(fffffd80676f4520,fffffd806605c988,ffff80002f10ca48) at VOP_RMDIR+0x12a sys/kern/vfs_vops.c:407 dounlinkat(ffff80002a2192c8,ffffff9c,6fca57216020,8) at dounlinkat+0x20e sys/kern/vfs_syscalls.c:1880 end trace frame: 0xffff80002f10cbb0, count: 0 ddb{1}> trace x86_ipi_db(ffff800029cebff0) 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(ffffffff82d700a8) at __mp_lock+0x122 __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff82d700a8) at __mp_lock+0x122 sys/kern/kern_lock.c:147 __mp_acquire_count(ffffffff82d700a8,1) at __mp_acquire_count+0x48 sys/kern/kern_lock.c:227 mi_switch() at mi_switch+0x494 sys/kern/sched_bsd.c:470 sleep_finish(0,1) at sleep_finish+0x19d sys/kern/kern_synch.c:414 biowait(fffffd806b378268) at biowait+0x91 sys/kern/vfs_bio.c:1254 bwrite(fffffd806b378268) at bwrite+0x1fb sys/kern/vfs_bio.c:766 ffs_update(fffffd8075c40008,1) at ffs_update+0x27f sys/ufs/ffs/ffs_inode.c:111 ffs_truncate(fffffd8075c40008,0,4,fffffd807f7d76e8) at ffs_truncate+0x987 ufs_rmdir(ffff80002f10c968) at ufs_rmdir+0x295 sys/ufs/ufs/ufs_vnops.c:1280 VOP_RMDIR(fffffd80676f4520,fffffd806605c988,ffff80002f10ca48) at VOP_RMDIR+0x12a sys/kern/vfs_vops.c:407 dounlinkat(ffff80002a2192c8,ffffff9c,6fca57216020,8) at dounlinkat+0x20e sys/kern/vfs_syscalls.c:1880 syscall(ffff80002f10cbc0) at syscall+0x53b mi_syscall sys/sys/syscall_mi.h:183 [inline] syscall(ffff80002f10cbc0) at syscall+0x53b sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x6fca57216010, count: -16