witness: lock order reversal: 1st 0xffff8000fffeaee0 fdlock (&newfdp->fd_fd.fd_lock) 2nd 0xfffffd806e0f10f0 inode (&ip->i_lock) lock order [1] fdlock (&newfdp->fd_fd.fd_lock) -> [2] inode (&ip->i_lock) lock order data 0xffffffff833525b3 -> 0xffffffff8334590b is missing lock order [2] inode (&ip->i_lock) -> [3] sbufrcv (&so->so_rcv.sb_lock) #0 rw_do_enter_write+0xba sys/kern/kern_rwlock.c:234 #1 sblock+0xb6 sys/kern/uipc_socket2.c:536 #2 soreceive+0x27d sys/kern/uipc_socket.c:870 #3 fifo_read+0x117 sys/miscfs/fifofs/fifo_vnops.c:264 #4 VOP_READ+0x101 sys/kern/vfs_vops.c:227 #5 vn_rdwr+0x15b sys/kern/vfs_vnops.c:-1 #6 vndsetcred+0xa1 sys/dev/vnd.c:685 #7 vndioctl+0xdfb sys/dev/vnd.c:486 #8 VOP_IOCTL+0xac sys/kern/vfs_vops.c:264 #9 vn_ioctl+0xf8 sys/kern/vfs_vnops.c:531 #10 sys_ioctl+0x674 sys/kern/sys_generic.c:-1 #11 syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline] #11 syscall+0xbd4 sys/arch/amd64/amd64/trap.c:746 #12 Xsyscall+0x128 lock order [3] sbufrcv (&so->so_rcv.sb_lock) -> [1] fdlock (&newfdp->fd_fd.fd_lock) #0 rw_do_enter_write+0xba sys/kern/kern_rwlock.c:234 #1 unp_externalize+0x3cf sys/kern/uipc_usrreq.c:1074 #2 soreceive+0xc24 sys/kern/uipc_socket.c:1009 #3 recvit+0x40b sys/kern/uipc_syscalls.c:1078 #4 sys_recvmsg+0x1bf sys/kern/uipc_syscalls.c:878 #5 syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline] #5 syscall+0xbd4 sys/arch/amd64/amd64/trap.c:746 #6 Xsyscall+0x128 Stopped at db_enter+0x25: addq $0x8,%rsp ddb{0}> ddb{0}> set $lines = 0 ddb{0}> set $maxwidth = 0 ddb{0}> show panic the kernel did not panic ddb{0}> trace db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438 witness_checkorder(fffffd806e0f10f0,9,0) at witness_checkorder+0x10b9 sys/kern/subr_witness.c:-1 rw_do_enter_write(fffffd806e0f10d8,1) at rw_do_enter_write+0xba sys/kern/kern_rwlock.c:234 rrw_enter(fffffd806e0f10d8,1) at rrw_enter+0xc6 sys/kern/kern_rwlock.c:621 VOP_LOCK(fffffd806e0f0708,2001) at VOP_LOCK+0xa3 sys/kern/vfs_vops.c:527 vn_lock(fffffd806e0f0708,2001) at vn_lock+0xa4 sys/kern/vfs_vnops.c:570 vn_closefile(fffffd806b607900,ffff8000fffe9ca8) at vn_closefile+0x111 vn_close sys/kern/vfs_vnops.c:292 [inline] vn_closefile(fffffd806b607900,ffff8000fffe9ca8) at vn_closefile+0x111 sys/kern/vfs_vnops.c:615 fdrop(fffffd806b607900,ffff8000fffe9ca8) at fdrop+0x121 sys/kern/kern_descrip.c:1280 knote_drop(fffffd806b3e6710,ffff8000fffe9ca8) at knote_drop+0x1a1 sys/kern/kern_event.c:2296 knote_remove(ffff8000fffe9ca8,fffffd806f0487e0,fffffd806f048870,5,0) at knote_remove+0x2f6 sys/kern/kern_event.c:2180 knote_fdclose(ffff8000fffe9ca8,5) at knote_fdclose+0xf9 sys/kern/kern_event.c:2203 fdrelease(ffff8000fffe9ca8,5) at fdrelease+0xf9 sys/kern/kern_descrip.c:760 syscall(ffff80003c456770) at syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c456770) at syscall+0xbd4 sys/arch/amd64/amd64/trap.c:746 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xa2885b67560, count: -14 ddb{0}> show registers rdi 0 rsi 0x80000 acpi_pdirpa+0x6be71 rbp 0xffff80003c456240 rbx 0 rdx 0xffff80000147f140 rcx 0xffff8000fffe9ca8 rax 0x7ffff acpi_pdirpa+0x6be70 r8 0xffff80003c456120 r9 0x8080808080808080 r10 0xbe36e78eafdf99c7 r11 0x483295feb102a6c7 r12 0xfffffd8003efac80 r13 0xfffffd80046e6938 r14 0x3 r15 0xffffffff833e2b64 substchar+0xf1da rip 0xffffffff831577a5 db_enter+0x25 cs 0x8 rflags 0x246 rsp 0xffff80003c456230 ss 0x10 db_enter+0x25: addq $0x8,%rsp ddb{0}> show proc PROC (syz-executor) tid=220329 pid=31349 tcnt=2 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=0xffff8000fffe94e0,0xffffffff83917b08 process=0xffff8000fffee1c8 user=0xffff80003c451000, vmspace=0xfffffd805fcb95e0 estcpu=36, cpticks=0, pctcpu=0.0, user=0, sys=0, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 31349 323872 15364 0 3 0x80 fsleep syz-executor *31349 220329 15364 0 7 0x4000000 syz-executor 20731 445607 17381 0 3 0x80 fsleep syz-executor 20731 66379 17381 0 3 0x4000080 sbwait syz-executor 43630 189350 33526 0 3 0x80 fsleep syz-executor 43630 45384 33526 0 3 0x4000080 kqsel syz-executor 7084 109717 98745 60929 3 0x90 fsleep syz-executor 7084 520621 98745 60929 3 0x4000090 ttyout syz-executor 44251 184945 82774 60929 3 0x90 fsleep syz-executor 44251 110733 82774 60929 3 0x4000090 ttyin syz-executor 73717 386892 14276 0 3 0x80 fsleep syz-executor 73717 79038 14276 0 3 0x4000080 lockf syz-executor 73717 296025 14276 0 3 0x4000080 fsleep syz-executor 73717 285395 14276 0 3 0x4000080 fsleep syz-executor 46678 81761 62756 0 3 0x80 fsleep syz-executor 46678 516114 62756 0 3 0x4000080 kqsel syz-executor 22668 14615 78240 0 3 0x2 biowait syz-executor 44081 516621 0 0 3 0x14200 acct acct 47951 485885 0 0 3 0x14200 bored sosplice 33526 361179 78240 0 3 0x82 nanoslp syz-executor 82774 444745 78240 0 3 0x82 nanoslp syz-executor 98745 66477 78240 0 3 0x82 nanoslp syz-executor 17381 346032 78240 0 3 0x82 nanoslp syz-executor 14276 88971 78240 0 3 0x82 nanoslp syz-executor 15364 36758 78240 0 3 0x82 nanoslp syz-executor 62756 449239 78240 0 3 0x82 nanoslp syz-executor 78240 376284 6913 0 3 0x82 kqread syz-executor 6913 107265 91230 0 3 0x10008a sigsusp ksh 91230 102622 29189 0 3 0x98 kqread sshd-session 29189 431599 62013 0 3 0x92 kqread sshd-session 75048 38268 1 0 3 0x100083 ttyin getty 62013 304643 1 0 3 0x88 kqread sshd 89133 394340 2348 74 3 0x1100092 bpf pflogd 2348 100502 1 0 3 0x80 sbwait pflogd 3131 180253 76796 73 3 0x1100090 kqread syslogd 76796 243495 1 0 3 0x100082 sbwait syslogd 41503 120213 1 0 3 0x100080 kqread resolvd 25723 410365 53391 77 3 0x100092 kqread dhcpleased 87150 246238 53391 77 3 0x100092 kqread dhcpleased 53391 49515 1 0 3 0x80 kqread dhcpleased 72543 204898 0 0 3 0x14200 bored smr 56703 92829 0 0 3 0x14200 pgzero zerothread 93994 272973 0 0 3 0x14200 aiodoned aiodoned 26463 459837 0 0 3 0x14200 syncer update 5979 132446 0 0 3 0x14200 cleaner cleaner 2961 27280 0 0 3 0x14200 reaper reaper 77835 452240 0 0 3 0x14200 pgdaemon pagedaemon 67927 268870 0 0 3 0x14200 bored viomb 18252 116720 0 0 3 0x40014200 acpi0 acpi0 57179 425640 0 0 7 0x40014200 idle1 34526 410570 0 0 3 0x14200 bored softnet1 43185 180074 0 0 3 0x14200 bored softnet0 79199 387081 0 0 3 0x14200 bored systqmp 95324 492545 0 0 3 0x14200 bored systq 55224 229206 0 0 3 0x14200 tmoslp softclockmp 22730 245146 0 0 3 0x40014200 tmoslp softclock 18747 347621 0 0 3 0x40014200 idle0 1 67145 0 0 3 0x82 wait init 0 0 -1 0 3 0x10010200 scheduler swapper ddb{0}> show all locks Process 31349 (syz-executor) thread 0xffff8000fffe9ca8 (220329) exclusive kernel_lock &kernel_lock r = 0 (0xffffffff83915fc0) #0 witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5f1 sys/kern/subr_witness.c:1160 #1 vn_closefile+0x41 sys/kern/vfs_vnops.c:608 #2 fdrop+0x121 sys/kern/kern_descrip.c:1280 #3 knote_drop+0x1a1 sys/kern/kern_event.c:2296 #4 knote_remove+0x2f6 sys/kern/kern_event.c:2180 #5 knote_fdclose+0xf9 sys/kern/kern_event.c:2203 #6 fdrelease+0xf9 sys/kern/kern_descrip.c:760 #7 syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline] #7 syscall+0xbd4 sys/arch/amd64/amd64/trap.c:746 #8 Xsyscall+0x128 exclusive rwlock fdlock r = 0 (0xffff8000fffeaee0) #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 sys_close+0xd0 sys/kern/kern_descrip.c:778 #3 syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline] #3 syscall+0xbd4 sys/arch/amd64/amd64/trap.c:746 #4 Xsyscall+0x128 Process 20731 (syz-executor) thread 0xffff8000fffe9248 (66379) exclusive rwlock sbufrcv r = 0 (0xffff8000014accc8) #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 sblock+0xb6 sys/kern/uipc_socket2.c:536 #3 soreceive+0x27d sys/kern/uipc_socket.c:870 #4 recvit+0x40b sys/kern/uipc_syscalls.c:1078 #5 sys_recvmmsg+0x410 sys/kern/uipc_syscalls.c:969 #6 syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline] #6 syscall+0xbd4 sys/arch/amd64/amd64/trap.c:746 #7 Xsyscall+0x128 Process 22668 (syz-executor) thread 0xffff8000fffe9a10 (14615) exclusive rrwlock inode r = 0 (0xfffffd806e162490) #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+0xa3 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:3113 #10 syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] #10 syscall+0xb17 sys/arch/amd64/amd64/trap.c:746 #11 Xsyscall+0x128 exclusive rrwlock inode r = 0 (0xfffffd806e92d490) #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+0xa3 sys/kern/vfs_vops.c:527 #4 vn_lock+0xa4 sys/kern/vfs_vnops.c:570 #5 vfs_lookup+0x11c sys/kern/vfs_lookup.c:-1 #6 namei+0x7ca sys/kern/vfs_lookup.c:250 #7 domkdirat+0x8b sys/kern/vfs_syscalls.c:3098 #8 syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] #8 syscall+0xb17 sys/arch/amd64/amd64/trap.c:746 #9 Xsyscall+0x128 ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10208 11031K 12325K 166960K 12887 0 pcb 18 12K 12K 166960K 173 0 rtable 177 9K 9K 166960K 380 0 pf 34 17K 67485K 166960K 121 0 ifaddr 36 6K 7K 166960K 88 0 ifgroup 55 2K 2K 166960K 137 0 sysctl 3 1K 9K 166960K 12 0 counters 68 36K 37K 166960K 374 0 ioctlops 0 0K 8K 166960K 1747 0 iov 1 4K 24K 166960K 89 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1454 91K 92K 166960K 2148 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 5K 166960K 19 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 0K 166960K 73 0 dirhash 12 2K 2K 166960K 30 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 17 61K 228K 166960K 1064 0 sigio 0 0K 0K 166960K 27 0 proc 72 115K 180K 166960K 644 0 subproc 72 4K 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 100 0 in_multi 69 5K 7K 166960K 130 0 ether_multi 1 0K 0K 166960K 11 0 mrt 1 0K 0K 166960K 12 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 97 440K 440K 166960K 97 0 exec 0 0K 1K 166960K 647 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 238 167K 181K 166960K 11238 0 UVM aobj 37 2K 2K 166960K 39 0 pinsyscall 42 84K 104K 166960K 2160 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 1K 166960K 44 0 NDP 12 0K 2K 166960K 62 0 temp 75 8652K 8756K 166960K 36405 0 kqueue 14 22K 32K 166960K 188 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 96 0 93 1 0 1 1 0 8 0 rtentry 176 119 0 51 5 0 5 5 0 8 0 unpcb 144 565 0 546 5 3 2 4 0 8 1 syncache 336 4 0 4 2 2 0 1 0 8 0 tcpqe 32 1 0 1 1 1 0 1 0 8 0 tcpcb 736 387 0 382 13 9 4 7 0 8 3 arp 136 13 0 4 1 0 1 1 0 8 0 inpcb 328 1092 0 1082 18 14 4 10 0 8 3 nd6 152 22 0 7 1 0 1 1 0 8 0 pkpcb 40 4 0 4 1 1 0 1 0 8 0 kcovpl 48 9 0 1 1 0 1 1 0 8 0 mppekey 1024 3 0 3 1 1 0 1 0 8 0 ppxss 1192 146 0 146 3 2 1 1 0 8 1 pppxif 1504 4 0 4 1 1 0 1 0 8 0 pffrag 232 4 0 2 1 0 1 1 0 482 0 pffrnode 88 4 0 2 1 0 1 1 0 8 0 pffrent 40 11 0 9 1 0 1 1 0 8 0 pfosfp 40 1430 0 1005 5 0 5 5 0 8 0 pfosfpen 112 1430 0 714 21 0 21 21 0 8 0 pfrktable 1344 2 0 2 2 2 0 1 0 8 0 pfqueue 320 1 0 1 1 0 1 1 0 8 1 pfstitem 24 73 0 26 1 0 1 1 0 8 0 pfstkey 128 73 0 26 2 0 2 2 0 8 0 pfstate 384 73 0 26 6 0 6 6 0 8 0 pfrule 1344 24 0 18 2 1 1 2 0 8 0 rttmr 136 1 0 1 1 1 0 1 0 8 0 art_heap8 4096 2 0 0 2 0 2 2 0 8 0 art_heap4 256 552 0 249 28 7 21 28 0 8 0 art_table 40 554 0 249 5 0 5 5 0 8 0 art_node 32 118 0 59 1 0 1 1 0 8 0 sysvmsgpl 40 20 0 13 1 0 1 1 0 8 0 semupl 112 4 0 4 2 2 0 1 0 8 0 semapl 112 68 0 58 1 0 1 1 0 8 0 shmpl 112 36 0 2 1 0 1 1 0 8 0 dirhash 1024 29 0 12 3 0 3 3 0 8 0 dino2pl 256 3262 0 1755 95 0 95 95 0 8 0 ffsino 296 3262 0 1755 117 0 117 117 0 8 0 nchpl 144 4772 0 3077 64 0 64 64 0 8 0 rtmask 32 11 0 11 3 2 1 1 0 8 1 uvmvnodes 80 3836 0 0 79 0 79 79 0 8 0 vnodes 216 3836 0 0 214 0 214 214 0 8 0 namei 1024 15812 0 15811 3 2 1 2 0 8 0 percpumem 16 202 0 153 1 0 1 1 0 8 0 kstatmem 264 92 0 64 6 3 3 3 0 8 1 scsiplug 72 1 0 1 1 1 0 1 0 8 0 scxspl 216 22127 0 22126 11 10 1 8 1 8 0 plimitpl 152 155 0 136 1 0 1 1 0 8 0 sigapl 424 1374 0 1325 9 2 7 8 0 8 1 knotepl 120 549 0 0 17 0 17 17 0 8 0 kqueuepl 224 384 0 372 6 5 1 5 0 8 0 pipepl 344 247 0 220 9 6 3 9 0 8 0 fdescpl 528 1330 0 1299 3 0 3 3 0 8 0 filepl 160 7676 0 7449 22 11 11 18 0 8 1 lockfpl 104 547 0 543 2 1 1 2 0 8 0 lockfspl 48 253 0 250 1 0 1 1 0 8 0 sessionpl 144 24 0 15 1 0 1 1 0 8 0 pgrppl 48 40 0 23 1 0 1 1 0 8 0 ucredpl 104 980 0 965 1 0 1 1 0 8 0 zombiepl 144 1325 0 1325 1 0 1 1 0 8 1 processpl 1232 1374 0 1325 6 1 5 6 0 8 0 procpl 664 2900 0 2842 8 2 6 8 0 8 0 sosppl 168 8 0 8 1 1 0 1 0 8 0 sockpl 752 1811 0 1779 19 12 7 14 0 8 3 mcl64k 65536 8 0 0 1 0 1 1 0 8 0 mcl16k 16384 2 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 3 0 0 1 0 1 1 0 8 0 mcl4k 4096 110 0 0 14 0 14 14 0 8 0 mcl2k 2048 25 0 0 4 0 4 4 0 8 0 mtagpl 96 10 0 0 1 0 1 1 0 8 0 mbufpl 256 338 0 0 21 0 21 21 0 8 0 bufpl 280 8368 0 2225 439 0 439 439 0 8 0 anonpl 32 7614 0 0 62 0 62 62 0 246 0 amapchunkpl 152 38302 0 37808 42 15 27 30 0 158 7 amappl16 200 3809 0 3772 33 18 15 15 0 8 8 amappl15 192 8 0 8 2 2 0 1 0 8 0 amappl14 184 119 0 107 1 0 1 1 0 8 0 amappl13 176 8 0 8 1 1 0 1 0 8 0 amappl12 168 1991 0 1960 3 1 2 2 0 8 0 amappl11 160 65 0 51 1 0 1 1 0 8 0 amappl10 152 6 0 6 1 1 0 1 0 8 0 amappl9 144 253 0 253 2 2 0 1 0 8 0 amappl8 136 25 0 22 1 0 1 1 0 8 0 amappl7 128 105 0 93 1 0 1 1 0 8 0 amappl6 120 191 0 187 1 0 1 1 0 8 0 amappl5 112 126 0 116 1 0 1 1 0 8 0 amappl4 104 298 0 278 1 0 1 1 0 8 0 amappl3 96 6506 0 6406 3 0 3 3 0 8 0 amappl2 88 1576 0 1494 2 0 2 2 0 8 0 amappl1 80 12091 0 11501 15 1 14 14 0 8 0 amappl 88 10378 0 10213 5 0 5 5 0 92 0 dma32768 32768 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 128 253 0 253 1 1 0 1 0 8 0 dma64 64 7 0 7 2 2 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 38 0 2 1 0 1 1 0 8 0 uaddrrnd 24 1331 0 1300 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 1331 0 1300 1 0 1 1 0 8 0 vmmpekpl 168 12073 0 12038 4 1 3 3 0 8 0 vmmpepl 168 87300 0 85306 111 11 100 100 0 357 6 vmsppl 488 1330 0 1300 7 3 4 5 0 8 0 rwobjpl 80 27748 0 22939 103 0 103 103 0 8 3 pdppl 4096 2670 0 2600 100 28 72 88 0 8 2 pvpl 32 15846 0 0 129 1 128 128 0 265 0 pmappl 256 1330 0 1300 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 296 0 52 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 witness_checkorder(fffffd806e0f10f0,9,0) at witness_checkorder+0x10b9 sys/kern/subr_witness.c:-1 rw_do_enter_write(fffffd806e0f10d8,1) at rw_do_enter_write+0xba sys/kern/kern_rwlock.c:234 rrw_enter(fffffd806e0f10d8,1) at rrw_enter+0xc6 sys/kern/kern_rwlock.c:621 VOP_LOCK(fffffd806e0f0708,2001) at VOP_LOCK+0xa3 sys/kern/vfs_vops.c:527 vn_lock(fffffd806e0f0708,2001) at vn_lock+0xa4 sys/kern/vfs_vnops.c:570 vn_closefile(fffffd806b607900,ffff8000fffe9ca8) at vn_closefile+0x111 vn_close sys/kern/vfs_vnops.c:292 [inline] vn_closefile(fffffd806b607900,ffff8000fffe9ca8) at vn_closefile+0x111 sys/kern/vfs_vnops.c:615 fdrop(fffffd806b607900,ffff8000fffe9ca8) at fdrop+0x121 sys/kern/kern_descrip.c:1280 knote_drop(fffffd806b3e6710,ffff8000fffe9ca8) at knote_drop+0x1a1 sys/kern/kern_event.c:2296 knote_remove(ffff8000fffe9ca8,fffffd806f0487e0,fffffd806f048870,5,0) at knote_remove+0x2f6 sys/kern/kern_event.c:2180 knote_fdclose(ffff8000fffe9ca8,5) at knote_fdclose+0xf9 sys/kern/kern_event.c:2203 fdrelease(ffff8000fffe9ca8,5) at fdrelease+0xf9 sys/kern/kern_descrip.c:760 syscall(ffff80003c456770) at syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c456770) at syscall+0xbd4 sys/arch/amd64/amd64/trap.c:746 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xa2885b67560, count: -14 ddb{0}> machine ddbcpu 1 Stopped at x86_ipi_db+0x27: addq $0x8,%rsp ddb{1}> trace x86_ipi_db(ffff8000299edff0) 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 acpicpu_idle() at acpicpu_idle+0x457 sys/dev/acpi/acpicpu_x86.c:1224 sched_idle(ffff8000299edff0) at sched_idle+0x391 sys/kern/kern_sched.c:191 end trace frame: 0x0, count: -5