witness: lock order reversal: 1st 0xfffffd806b9c6278 fdlock (&newfdp->fd_fd.fd_lock) 2nd 0xfffffd806de77a90 inode (&ip->i_lock) lock order [1] fdlock (&newfdp->fd_fd.fd_lock) -> [2] inode (&ip->i_lock) lock order data 0xffffffff8314c474 -> 0xffffffff830d64b2 is missing lock order [2] inode (&ip->i_lock) -> [3] sbufrcv (&so->so_rcv.sb_lock) #0 rw_do_enter_write+0xb7 sys/kern/kern_rwlock.c:233 #1 sblock+0xb7 sys/kern/uipc_socket2.c:537 #2 soreceive+0x28e sys/kern/uipc_socket.c:876 #3 fifo_read+0x11a sys/miscfs/fifofs/fifo_vnops.c:264 #4 VOP_READ+0x102 sys/kern/vfs_vops.c:227 #5 vn_rdwr+0x15b #6 vndsetcred+0xa1 sys/dev/vnd.c:684 #7 vndioctl+0xe6c sys/dev/vnd.c:485 #8 VOP_IOCTL+0xac sys/kern/vfs_vops.c:264 #9 vn_ioctl+0xf8 sys/kern/vfs_vnops.c:531 #10 sys_ioctl+0x5c3 #11 syscall+0xbc6 mi_syscall sys/sys/syscall_mi.h:176 [inline] #11 syscall+0xbc6 sys/arch/amd64/amd64/trap.c:577 #12 Xsyscall+0x128 lock order [3] sbufrcv (&so->so_rcv.sb_lock) -> [1] fdlock (&newfdp->fd_fd.fd_lock) #0 rw_do_enter_write+0xb7 sys/kern/kern_rwlock.c:233 #1 unp_externalize+0x3e4 sys/kern/uipc_usrreq.c:1070 #2 soreceive+0xc73 sys/kern/uipc_socket.c:1015 #3 recvit+0x40a sys/kern/uipc_syscalls.c:1072 #4 sys_recvmsg+0x1bf sys/kern/uipc_syscalls.c:872 #5 syscall+0xbc6 mi_syscall sys/sys/syscall_mi.h:176 [inline] #5 syscall+0xbc6 sys/arch/amd64/amd64/trap.c:577 #6 Xsyscall+0x128 Stopped at db_enter+0x25: addq $0x8,%rsp ddb{1}> ddb{1}> set $lines = 0 ddb{1}> set $maxwidth = 0 ddb{1}> show panic the kernel did not panic ddb{1}> trace db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:437 witness_checkorder(fffffd806de77a90,9,0) at witness_checkorder+0x1047 rw_do_enter_write(fffffd806de77a78,1) at rw_do_enter_write+0xb7 sys/kern/kern_rwlock.c:233 rrw_enter(fffffd806de77a78,1) at rrw_enter+0xc6 sys/kern/kern_rwlock.c:616 VOP_LOCK(fffffd806de78cf0,2001) at VOP_LOCK+0xa6 sys/kern/vfs_vops.c:524 vn_lock(fffffd806de78cf0,2001) at vn_lock+0xa4 sys/kern/vfs_vnops.c:570 vn_closefile(fffffd805dbcf148,ffff8000ffff91d8) at vn_closefile+0x111 vn_close sys/kern/vfs_vnops.c:292 [inline] vn_closefile(fffffd805dbcf148,ffff8000ffff91d8) at vn_closefile+0x111 sys/kern/vfs_vnops.c:615 fdrop(fffffd805dbcf148,ffff8000ffff91d8) at fdrop+0x126 sys/kern/kern_descrip.c:1265 knote_remove(ffff8000ffff91d8,fffffd806ed3b5e8,fffffd806ed3b670,3,0) at knote_remove+0x403 sys/kern/kern_event.c:2014 knote_fdclose(ffff8000ffff91d8,3) at knote_fdclose+0xf9 sys/kern/kern_event.c:2049 fdrelease(ffff8000ffff91d8,3) at fdrelease+0xf9 sys/kern/kern_descrip.c:749 syscall(ffff80003c5b01d0) at syscall+0xbc6 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c5b01d0) at syscall+0xbc6 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xf4205cf3550, count: -13 ddb{1}> show registers rdi 0 rsi 0x80000 acpi_pdirpa+0x6be71 rbp 0xffff80003c5afcb0 rbx 0xfffffd800433cbd0 rdx 0xffff80000128dd40 rcx 0xffff8000ffff91d8 rax 0x7ffff acpi_pdirpa+0x6be70 r8 0xffff80003c5afb90 r9 0x8080808080808080 r10 0xf4a418c4c40c5b34 r11 0x2e0067e791e8b89e r12 0 r13 0xfffffd8003b53f00 r14 0x3 r15 0xffffffff rip 0xffffffff8239cdf5 db_enter+0x25 cs 0x8 rflags 0x246 rsp 0xffff80003c5afca0 ss 0x10 db_enter+0x25: addq $0x8,%rsp ddb{1}> show proc PROC (syz-executor) tid=383075 pid=87644 tcnt=3 stat=onproc flags process=0 proc=4000000 runpri=32, usrpri=50, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff8000ffffa010,0xffff8000ffff7200 process=0xffff80002a478ff8 user=0xffff80003c5ab000, vmspace=0xfffffd80641cb748 estcpu=36, cpticks=1, pctcpu=0.0, user=0, sys=1, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 87644 161445 64530 0 2 0 syz-executor *87644 383075 64530 0 7 0x4000000 syz-executor 87644 489604 64530 0 3 0x4000080 fsleep syz-executor 39137 99089 61923 -1 7 0x10 syz-executor 39137 285196 61923 -1 3 0x4000090 fsleep syz-executor 39137 36693 61923 -1 3 0x4000090 pipewr syz-executor 95507 234790 90358 0 3 0x80 nanoslp syz-executor 95507 115261 90358 0 3 0x4000080 sbwait syz-executor 37986 491866 21582 0 3 0x80 nanoslp syz-executor 37986 445504 21582 0 3 0x4000080 kqsel syz-executor 37986 103205 21582 0 3 0x4000080 fsleep syz-executor 7153 39509 79732 0 3 0x80 nanoslp syz-executor 7153 310604 79732 0 3 0x4000080 fsleep syz-executor 7153 116898 79732 0 3 0x4000080 fsleep syz-executor 7153 16709 79732 0 3 0x4000080 lockf syz-executor 7153 144397 79732 0 3 0x4000080 fsleep syz-executor 18998 111780 0 0 3 0x14280 nfsidl nfsio 67070 25596 0 0 3 0x14280 nfsidl nfsio 46795 500199 0 0 3 0x14280 nfsidl nfsio 96274 115578 0 0 3 0x14280 nfsidl nfsio 46513 172664 0 0 3 0x14280 nfsidl nfsio 59125 213525 0 0 3 0x14280 nfsidl nfsio 90065 175313 0 0 3 0x14280 nfsidl nfsio 74698 410598 0 0 3 0x14280 nfsidl nfsio 42101 179478 0 0 3 0x14280 nfsidl nfsio 90594 20066 0 0 3 0x14280 nfsidl nfsio 84349 478343 0 0 3 0x14280 nfsidl nfsio 2383 209990 0 0 3 0x14280 nfsidl nfsio 77115 16779 0 0 3 0x14280 nfsidl nfsio 37727 304006 0 0 3 0x14280 nfsidl nfsio 54358 116570 0 0 3 0x14280 nfsidl nfsio 52473 264538 0 0 3 0x14280 nfsidl nfsio 19572 44148 0 0 3 0x14280 nfsidl nfsio 80150 361235 0 0 3 0x14280 nfsidl nfsio 19574 385206 0 0 3 0x14280 nfsidl nfsio 97134 150603 0 0 3 0x14280 nfsidl nfsio 25536 483841 0 0 3 0x14200 acct acct 89296 403033 1 0 3 0x80 nanoslp init 39119 181450 0 0 3 0x14200 bored sosplice 7953 214886 70665 0 3 0x82 wait syz-executor 79732 389982 70665 0 3 0x82 nanoslp syz-executor 61923 409548 70665 0 3 0x82 nanoslp syz-executor 62816 384573 70665 0 3 0x82 nanoslp syz-executor 57727 43037 70665 0 3 0x82 wait syz-executor 64530 95619 70665 0 3 0x82 nanoslp syz-executor 90358 17126 70665 0 3 0x82 nanoslp syz-executor 21582 429160 70665 0 3 0x82 nanoslp syz-executor 70665 32610 4319 0 3 0x82 kqread syz-executor 4319 344354 345 0 3 0x10008a sigsusp ksh 345 180923 50181 0 3 0x98 kqread sshd-session 50181 209443 33810 0 3 0x92 kqread sshd-session 33810 47248 1 0 3 0x88 kqread sshd 81353 465319 91455 74 3 0x1100092 bpf pflogd 91455 235522 1 0 3 0x80 sbwait pflogd 17698 132730 96411 73 3 0x1100090 kqread syslogd 96411 275448 1 0 3 0x100082 sbwait syslogd 37003 243155 1 0 3 0x100080 kqread resolvd 6465 324632 4771 77 3 0x100092 kqread dhcpleased 30774 227336 4771 77 3 0x100092 kqread dhcpleased 4771 334930 1 0 3 0x80 kqread dhcpleased 27564 306670 0 0 3 0x14200 bored smr 935 273819 0 0 3 0x14200 pgzero zerothread 51820 145826 0 0 3 0x14200 aiodoned aiodoned 53845 84902 0 0 3 0x14200 syncer update 74719 522026 0 0 3 0x14200 cleaner cleaner 62637 153920 0 0 3 0x14200 reaper reaper 65023 319064 0 0 3 0x14200 pgdaemon pagedaemon 89941 307174 0 0 3 0x14200 bored viomb 58057 304323 0 0 3 0x40014200 acpi0 acpi0 18749 268026 0 0 3 0x40014200 idle1 53725 406188 0 0 3 0x14200 bored softnet3 42260 195443 0 0 3 0x14200 bored softnet2 14969 298080 0 0 3 0x14200 bored softnet1 87253 74974 0 0 2 0x14200 softnet0 34817 336084 0 0 3 0x14200 bored systqmp 66488 365931 0 0 3 0x14200 bored systq 74365 20853 0 0 3 0x14200 tmoslp softclockmp 52998 164264 0 0 3 0x40014200 tmoslp softclock 40322 160842 0 0 3 0x40014200 idle0 1 171208 0 0 3 0x80082 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{1}> show all locks Process 87644 (syz-executor) thread 0xffff8000ffff91d8 (383075) exclusive kernel_lock &kernel_lock r = 0 (0xffffffff836710f8) #0 witness_lock+0x5bb stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5bb sys/kern/subr_witness.c:1155 #1 vn_closefile+0x41 sys/kern/vfs_vnops.c:608 #2 fdrop+0x126 sys/kern/kern_descrip.c:1265 #3 knote_remove+0x403 sys/kern/kern_event.c:2014 #4 knote_fdclose+0xf9 sys/kern/kern_event.c:2049 #5 fdrelease+0xf9 sys/kern/kern_descrip.c:749 #6 syscall+0xbc6 mi_syscall sys/sys/syscall_mi.h:176 [inline] #6 syscall+0xbc6 sys/arch/amd64/amd64/trap.c:577 #7 Xsyscall+0x128 exclusive rwlock fdlock r = 0 (0xfffffd806b9c6278) #0 witness_lock+0x5bb stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5bb sys/kern/subr_witness.c:1155 #1 rw_do_enter_write+0x3ea sys/kern/kern_rwlock.c:316 #2 sys_close+0xc4 sys/kern/kern_descrip.c:767 #3 syscall+0xbc6 mi_syscall sys/sys/syscall_mi.h:176 [inline] #3 syscall+0xbc6 sys/arch/amd64/amd64/trap.c:577 #4 Xsyscall+0x128 ddb{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10237 11038K 11383K 166960K 13201 0 pcb 17 16K 18K 166960K 376 0 rtable 162 7K 8K 166960K 539 0 pf 40 18K 22K 166960K 131 0 ifaddr 36 5K 7K 166960K 73 0 ifgroup 63 2K 2K 166960K 109 0 sysctl 3 1K 1K 166960K 7 0 counters 68 36K 37K 166960K 94 0 ioctlops 0 0K 4K 166960K 1628 0 iov 0 0K 16K 166960K 131 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1398 88K 89K 166960K 2777 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 9K 166960K 27 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 0K 166960K 40 0 dirhash 12 2K 2K 166960K 36 0 ACPI 1690 195K 286K 166960K 12468 0 file desc 18 65K 93K 166960K 1611 0 sigio 0 0K 0K 166960K 26 0 proc 63 79K 164K 166960K 703 0 subproc 72 4K 4K 166960K 72 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 237 0 in_multi 58 4K 7K 166960K 167 0 ether_multi 1 0K 0K 166960K 6 0 mrt 0 0K 0K 166960K 6 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 253 1129K 1129K 166960K 253 0 exec 0 0K 1K 166960K 552 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 253 74K 79K 166960K 16974 0 UVM aobj 131 7K 7K 166960K 134 0 pinsyscall 42 84K 102K 166960K 2761 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 3 0K 0K 166960K 124 0 NDP 14 0K 2K 166960K 48 0 temp 80 6900K 7012K 166960K 66098 0 kqueue 14 22K 33K 166960K 285 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 120 191 0 185 2 1 1 2 0 8 0 rtentry 112 156 0 90 4 0 4 4 0 8 0 unpcb 144 1066 0 1043 7 3 4 4 0 8 3 syncache 336 14 0 14 4 3 1 1 0 8 1 sackhl 24 5 0 5 4 3 1 1 0 8 1 tcpqe 32 4 0 4 3 2 1 1 0 8 1 tcpcb 808 674 0 664 18 10 8 8 0 8 6 arp 120 25 0 12 1 0 1 1 0 8 0 inpcb 376 2296 0 2245 33 21 12 21 0 8 6 nd6 136 30 0 17 1 0 1 1 0 8 0 pkpcb 40 9 0 9 3 2 1 1 0 8 1 kcovpl 48 8 0 0 1 0 1 1 0 8 0 ppxss 1168 6 0 6 4 3 1 1 0 8 1 pfstscr 40 5 0 5 3 3 0 1 0 8 0 pffrag 232 6 0 2 1 0 1 1 0 482 0 pffrnode 88 4 0 0 1 0 1 1 0 8 0 pffrent 40 14 0 10 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 2 0 2 2 1 1 1 0 8 1 pftag 88 2 0 2 2 1 1 1 0 8 1 pfstitem 24 116 0 31 1 0 1 1 0 8 0 pfstkey 128 124 0 39 3 0 3 3 0 8 0 pfstate 376 122 0 37 9 0 9 9 0 8 0 pfrule 1344 33 0 27 2 1 1 2 0 8 0 art_heap8 4096 2 0 0 2 0 2 2 0 8 0 art_heap4 256 724 0 412 31 7 24 31 0 8 1 art_table 32 726 0 412 4 0 4 4 0 8 0 art_node 16 150 0 91 1 0 1 1 0 8 0 sysvmsgpl 40 2 0 1 1 0 1 1 0 8 0 semupl 112 1 0 1 1 0 1 1 0 8 1 semapl 112 37 0 27 1 0 1 1 0 8 0 shmpl 112 131 0 3 4 0 4 4 0 8 0 dirhash 1024 33 0 16 3 0 3 3 0 8 0 dino2pl 256 4574 0 3059 96 0 96 96 0 8 0 ffsino 280 4574 0 3059 109 0 109 109 0 8 0 nchpl 144 7025 0 6425 63 39 24 63 0 8 0 uvmvnodes 80 5347 0 0 110 0 110 110 0 8 0 vnodes 216 5347 0 0 298 0 298 298 0 8 0 namei 1024 24703 0 24703 4 3 1 2 0 8 1 percpumem 16 61 0 13 1 0 1 1 0 8 0 kstatmem 264 54 0 26 2 0 2 2 0 8 0 acpiwqpl 32 1 0 1 1 0 1 1 1 8 1 scsiplug 72 6 0 6 4 3 1 1 0 8 1 scxspl 216 22712 0 22712 12 9 3 8 1 8 3 plimitpl 152 482 0 463 1 0 1 1 0 8 0 sigapl 424 1969 0 1897 10 1 9 9 0 8 0 futexpl 64 23296 0 23290 1 0 1 1 0 8 0 knotepl 120 559 0 0 17 0 17 17 0 8 0 kqueuepl 216 790 0 779 17 12 5 9 0 8 4 pipepl 328 358 0 330 8 5 3 8 0 8 0 fdescpl 504 1907 0 1875 5 0 5 5 0 8 0 filepl 152 14252 0 13977 28 10 18 18 0 8 6 lockfpl 104 1191 0 1187 4 3 1 4 0 8 0 lockfspl 48 239 0 236 1 0 1 1 0 8 0 sessionpl 144 37 0 29 1 0 1 1 0 8 0 pgrppl 48 199 0 183 1 0 1 1 0 8 0 ucredpl 104 2793 0 2778 1 0 1 1 0 8 0 zombiepl 144 1971 0 1968 1 0 1 1 0 8 0 processpl 1168 1969 0 1897 7 1 6 6 0 8 0 procpl 648 4551 0 4468 9 1 8 8 0 8 1 srpgc 96 4 0 4 2 1 1 1 0 8 1 sosppl 168 8 0 8 3 2 1 1 0 8 1 sockpl 688 3581 0 3502 32 19 13 21 0 8 5 mcl64k 65536 5 0 0 1 0 1 1 0 8 0 mcl16k 16384 1 0 0 1 0 1 1 0 8 0 mcl12k 12288 1 0 0 1 0 1 1 0 8 0 mcl9k 9216 1 0 0 1 0 1 1 0 8 0 mcl8k 8192 5 0 0 1 0 1 1 0 8 0 mcl4k 4096 128 0 0 16 0 16 16 0 8 0 mcl2k 2048 78 0 0 10 0 10 10 0 8 0 mtagpl 96 26 0 0 1 0 1 1 0 8 0 mbufpl 256 330 0 0 19 0 19 19 0 8 0 bufpl 280 6637 0 471 441 0 441 441 0 8 0 anonpl 24 260002 0 254609 106 49 57 73 0 185 9 amapchunkpl 152 55179 0 54474 47 14 33 33 0 158 5 amappl16 200 5114 0 5036 40 32 8 24 0 8 0 amappl15 192 13 0 13 1 1 0 1 0 8 0 amappl14 184 142 0 131 1 0 1 1 0 8 0 amappl13 176 6 0 6 2 2 0 1 0 8 0 amappl12 168 2652 0 2621 3 1 2 2 0 8 0 amappl11 160 52 0 38 1 0 1 1 0 8 0 amappl10 152 22 0 22 1 1 0 1 0 8 0 amappl9 144 245 0 244 1 0 1 1 0 8 0 amappl8 136 30 0 27 1 0 1 1 0 8 0 amappl7 128 121 0 109 1 0 1 1 0 8 0 amappl6 120 186 0 182 1 0 1 1 0 8 0 amappl5 112 127 0 117 1 0 1 1 0 8 0 amappl4 104 382 0 362 1 0 1 1 0 8 0 amappl3 96 11365 0 11237 4 0 4 4 0 8 0 amappl2 88 759 0 694 2 0 2 2 0 8 0 amappl1 80 15088 0 14536 15 1 14 15 0 8 0 amappl 88 16428 0 16228 5 0 5 5 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 128 254 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 19 0 18 1 0 1 1 0 8 0 aobjpl 72 133 0 3 3 0 3 3 0 8 0 uaddrrnd 24 1907 0 1875 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 1907 0 1875 1 0 1 1 0 8 0 vmmpekpl 168 18037 0 17995 3 0 3 3 0 8 0 vmmpepl 168 123436 0 121449 126 31 95 110 0 357 4 vmsppl 456 1906 0 1875 7 2 5 5 0 8 0 rwobjpl 64 39114 0 32646 105 0 105 105 0 8 0 pdppl 4096 3821 0 3750 121 48 73 85 0 8 2 pvpl 32 19886 0 0 161 1 160 160 0 265 0 pmappl 248 1906 0 1875 3 0 3 3 0 8 0 extentpl 40 55 0 38 1 0 1 1 0 8 0 phpool 112 346 0 77 8 0 8 8 0 8 0 ddb{1}> machine ddbcpu 0 Stopped at x86_ipi_db+0x27: addq $0x8,%rsp ddb{0}> trace x86_ipi_db(ffffffff834e3ff0) at x86_ipi_db+0x27 sys/arch/amd64/amd64/db_interface.c:393 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(ffffffff83670ef0) at __mp_lock+0x199 __mp_lock_spin sys/kern/kern_lock.c:113 [inline] __mp_lock(ffffffff83670ef0) at __mp_lock+0x199 sys/kern/kern_lock.c:144 softintr_dispatch(0) at softintr_dispatch+0x5b sys/arch/amd64/amd64/softintr.c:88 Xsoftclock() at Xsoftclock+0x27 end of kernel end trace frame: 0x7a876bae9750, count: -6 ddb{0}> machine ddbcpu 1 Stopped at db_enter+0x25: addq $0x8,%rsp ddb{1}> trace db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:437 witness_checkorder(fffffd806de77a90,9,0) at witness_checkorder+0x1047 rw_do_enter_write(fffffd806de77a78,1) at rw_do_enter_write+0xb7 sys/kern/kern_rwlock.c:233 rrw_enter(fffffd806de77a78,1) at rrw_enter+0xc6 sys/kern/kern_rwlock.c:616 VOP_LOCK(fffffd806de78cf0,2001) at VOP_LOCK+0xa6 sys/kern/vfs_vops.c:524 vn_lock(fffffd806de78cf0,2001) at vn_lock+0xa4 sys/kern/vfs_vnops.c:570 vn_closefile(fffffd805dbcf148,ffff8000ffff91d8) at vn_closefile+0x111 vn_close sys/kern/vfs_vnops.c:292 [inline] vn_closefile(fffffd805dbcf148,ffff8000ffff91d8) at vn_closefile+0x111 sys/kern/vfs_vnops.c:615 fdrop(fffffd805dbcf148,ffff8000ffff91d8) at fdrop+0x126 sys/kern/kern_descrip.c:1265 knote_remove(ffff8000ffff91d8,fffffd806ed3b5e8,fffffd806ed3b670,3,0) at knote_remove+0x403 sys/kern/kern_event.c:2014 knote_fdclose(ffff8000ffff91d8,3) at knote_fdclose+0xf9 sys/kern/kern_event.c:2049 fdrelease(ffff8000ffff91d8,3) at fdrelease+0xf9 sys/kern/kern_descrip.c:749 syscall(ffff80003c5b01d0) at syscall+0xbc6 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c5b01d0) at syscall+0xbc6 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xf4205cf3550, count: -13