witness: lock order reversal: 1st 0xfffffd806be75860 fdlock (&newfdp->fd_fd.fd_lock) 2nd 0xfffffd806dd1aa90 inode (&ip->i_lock) lock order [1] fdlock (&newfdp->fd_fd.fd_lock) -> [2] inode (&ip->i_lock) lock order data 0xffffffff83429102 -> 0xffffffff833a5512 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:536 #2 soreceive+0x28e sys/kern/uipc_socket.c:882 #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:1021 #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:438 witness_checkorder(fffffd806dd1aa90,9,0) at witness_checkorder+0x1047 rw_do_enter_write(fffffd806dd1aa78,1) at rw_do_enter_write+0xb7 sys/kern/kern_rwlock.c:233 rrw_enter(fffffd806dd1aa78,1) at rrw_enter+0xc6 sys/kern/kern_rwlock.c:616 VOP_LOCK(fffffd806dd1ba68,2001) at VOP_LOCK+0xa6 sys/kern/vfs_vops.c:524 vn_lock(fffffd806dd1ba68,2001) at vn_lock+0xa4 sys/kern/vfs_vnops.c:570 vn_closefile(fffffd806be54b58,ffff8000330ab4b0) at vn_closefile+0x111 vn_close sys/kern/vfs_vnops.c:292 [inline] vn_closefile(fffffd806be54b58,ffff8000330ab4b0) at vn_closefile+0x111 sys/kern/vfs_vnops.c:615 fdrop(fffffd806be54b58,ffff8000330ab4b0) at fdrop+0x126 sys/kern/kern_descrip.c:1265 knote_drop(fffffd806ba19178,ffff8000330ab4b0) at knote_drop+0x1a1 sys/kern/kern_event.c:2142 knote_remove(ffff8000330ab4b0,fffffd806eb78000,fffffd806eb78088,4,0) at knote_remove+0x239 sys/kern/kern_event.c:2025 knote_fdclose(ffff8000330ab4b0,4) at knote_fdclose+0xf9 sys/kern/kern_event.c:2049 fdrelease(ffff8000330ab4b0,4) at fdrelease+0xf9 sys/kern/kern_descrip.c:749 syscall(ffff8000318a9250) at syscall+0xbc6 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff8000318a9250) at syscall+0xbc6 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x17605260050, count: -14 ddb{1}> show registers rdi 0 rsi 0 rbp 0xffff8000318a8cf0 rbx 0xfffffd800470d4e8 rdx 0 rcx 0xffff8000330ab4b0 rax 0xffff800029a9bff0 r8 0xffff8000318a8bd0 r9 0x8080808080808080 r10 0xf6eb7f396c1617cc r11 0x5d608af2d47df01a r12 0 r13 0xfffffd8003f24f00 r14 0x3 r15 0xffffffff rip 0xffffffff810240e5 db_enter+0x25 cs 0x8 rflags 0x246 rsp 0xffff8000318a8ce0 ss 0x10 db_enter+0x25: addq $0x8,%rsp ddb{1}> show proc PROC (syz-executor) tid=389292 pid=84533 tcnt=2 stat=onproc flags process=0 proc=4000000 runpri=32, usrpri=79, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff8000330ab740,0xffff8000330ab230 process=0xffff8000330ac020 user=0xffff8000318a4000, vmspace=0xfffffd806bec7570 estcpu=29, cpticks=0, pctcpu=0.0, user=0, sys=0, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 73961 383822 27200 0 7 0 syz-executor 84533 243669 50054 0 2 0 syz-executor *84533 389292 50054 0 7 0x4000000 syz-executor 83829 219415 61060 0 2 0 syz-executor 83829 287731 61060 0 3 0x4000080 fsleep syz-executor 83829 502011 61060 0 3 0x4000080 fsleep syz-executor 79929 456915 0 0 3 0x14200 bored sosplice 61060 129724 42193 0 3 0x82 nanoslp syz-executor 56513 51150 42193 0 3 0x82 nanoslp syz-executor 38705 506346 42193 0 3 0x82 nanoslp syz-executor 27200 389315 42193 0 3 0x82 nanoslp syz-executor 3306 102398 42193 0 3 0x2 biowait syz-executor 46482 259026 42193 0 3 0x2 biowait syz-executor 94318 361029 42193 0 3 0x82 wait syz-executor 50054 490246 42193 0 3 0x82 nanoslp syz-executor 42193 142573 231 0 3 0x82 kqread syz-executor 231 331581 31788 0 3 0x10008a sigsusp ksh 31788 321957 64466 0 3 0x98 kqread sshd-session 64466 227753 12809 0 3 0x92 kqread sshd-session 61802 158091 1 0 3 0x100083 ttyin getty 12809 364082 1 0 3 0x88 kqread sshd 3609 12399 63880 74 3 0x1100092 bpf pflogd 63880 422801 1 0 3 0x80 sbwait pflogd 56342 71598 55156 73 3 0x1100090 kqread syslogd 55156 62296 1 0 3 0x100082 sbwait syslogd 53143 84123 1 0 3 0x100080 kqread resolvd 54599 465573 31727 77 3 0x100092 kqread dhcpleased 31914 65343 31727 77 3 0x100092 kqread dhcpleased 31727 492811 1 0 3 0x80 kqread dhcpleased 37742 283733 0 0 3 0x14200 bored smr 22574 197742 0 0 3 0x14200 pgzero zerothread 91341 298569 0 0 3 0x14200 aiodoned aiodoned 70573 119482 0 0 3 0x14200 syncer update 26599 117813 0 0 3 0x14200 cleaner cleaner 13556 438507 0 0 3 0x14200 reaper reaper 65375 266610 0 0 3 0x14200 pgdaemon pagedaemon 9528 400151 0 0 3 0x14200 bored viomb 71495 462974 0 0 3 0x40014200 acpi0 acpi0 27324 334081 0 0 3 0x40014200 idle1 50074 224338 0 0 3 0x14200 bored softnet3 21185 5549 0 0 3 0x14200 bored softnet2 41274 332665 0 0 3 0x14200 bored softnet1 19133 463112 0 0 2 0x14200 softnet0 42082 288304 0 0 3 0x14200 bored systqmp 75175 515774 0 0 3 0x14200 bored systq 34096 445520 0 0 3 0x14200 tmoslp softclockmp 65306 415024 0 0 3 0x40014200 tmoslp softclock 50615 412972 0 0 3 0x40014200 idle0 1 242234 0 0 3 0x82 wait init 0 0 -1 0 3 0x10010200 scheduler swapper ddb{1}> show all locks Process 84533 (syz-executor) thread 0xffff8000330ab4b0 (389292) exclusive kernel_lock &kernel_lock r = 0 (0xffffffff83906af8) #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_drop+0x1a1 sys/kern/kern_event.c:2142 #4 knote_remove+0x239 sys/kern/kern_event.c:2025 #5 knote_fdclose+0xf9 sys/kern/kern_event.c:2049 #6 fdrelease+0xf9 sys/kern/kern_descrip.c:749 #7 syscall+0xbc6 mi_syscall sys/sys/syscall_mi.h:176 [inline] #7 syscall+0xbc6 sys/arch/amd64/amd64/trap.c:577 #8 Xsyscall+0x128 exclusive rwlock fdlock r = 0 (0xfffffd806be75860) #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 Process 3306 (syz-executor) thread 0xffff8000ffffacf0 (102398) exclusive rrwlock inode r = 0 (0xfffffd806bb54730) #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 rrw_enter+0xc6 sys/kern/kern_rwlock.c:616 #3 VOP_LOCK+0xa6 sys/kern/vfs_vops.c:524 #4 ufs_ihashins+0x4f sys/ufs/ufs/ufs_ihash.c:159 #5 ffs_vget+0x187 sys/ufs/ffs/ffs_vfsops.c:1230 #6 ffs_inode_alloc+0x283 sys/ufs/ffs/ffs_alloc.c:393 #7 ufs_mkdir+0x113 sys/ufs/ufs/ufs_vnops.c:1112 #8 VOP_MKDIR+0x102 sys/kern/vfs_vops.c:394 #9 domkdirat+0x179 sys/kern/vfs_syscalls.c:3117 #10 syscall+0xb08 mi_syscall sys/sys/syscall_mi.h:176 [inline] #10 syscall+0xb08 sys/arch/amd64/amd64/trap.c:577 #11 Xsyscall+0x128 exclusive rrwlock inode r = 0 (0xfffffd806ccc7538) #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 rrw_enter+0xc6 sys/kern/kern_rwlock.c:616 #3 VOP_LOCK+0xa6 sys/kern/vfs_vops.c:524 #4 vn_lock+0xa4 sys/kern/vfs_vnops.c:570 #5 vfs_lookup+0x109 sys/kern/vfs_lookup.c:418 #6 namei+0x7aa sys/kern/vfs_lookup.c:250 #7 domkdirat+0x8b sys/kern/vfs_syscalls.c:3102 #8 syscall+0xb08 mi_syscall sys/sys/syscall_mi.h:176 [inline] #8 syscall+0xb08 sys/arch/amd64/amd64/trap.c:577 #9 Xsyscall+0x128 Process 46482 (syz-executor) thread 0xffff8000ffffbc50 (259026) exclusive rrwlock inode r = 0 (0xfffffd806bb54848) #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 rrw_enter+0xc6 sys/kern/kern_rwlock.c:616 #3 VOP_LOCK+0xa6 sys/kern/vfs_vops.c:524 #4 vn_lock+0xa4 sys/kern/vfs_vnops.c:570 #5 vget+0x2bd sys/kern/vfs_subr.c:694 #6 ufs_ihashget+0x185 sys/ufs/ufs/ufs_ihash.c:98 #7 ffs_vget+0x8c sys/ufs/ffs/ffs_vfsops.c:1201 #8 ufs_lookup+0x19f8 sys/ufs/ufs/ufs_lookup.c:478 #9 VOP_LOOKUP+0x6e sys/kern/vfs_vops.c:85 #10 vfs_lookup+0x8fa sys/kern/vfs_lookup.c:566 #11 namei+0x7aa sys/kern/vfs_lookup.c:250 #12 dounlinkat+0xc1 sys/kern/vfs_syscalls.c:1866 #13 syscall+0xb08 mi_syscall sys/sys/syscall_mi.h:176 [inline] #13 syscall+0xb08 sys/arch/amd64/amd64/trap.c:577 #14 Xsyscall+0x128 exclusive rrwlock inode r = 0 (0xfffffd806bb54960) #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 rrw_enter+0xc6 sys/kern/kern_rwlock.c:616 #3 VOP_LOCK+0xa6 sys/kern/vfs_vops.c:524 #4 vn_lock+0xa4 sys/kern/vfs_vnops.c:570 #5 vget+0x2bd sys/kern/vfs_subr.c:694 #6 cache_lookup+0x36e sys/kern/vfs_cache.c:222 #7 ufs_lookup+0x21b sys/ufs/ufs/ufs_lookup.c:160 #8 VOP_LOOKUP+0x6e sys/kern/vfs_vops.c:85 #9 vfs_lookup+0x8fa sys/kern/vfs_lookup.c:566 #10 namei+0x7aa sys/kern/vfs_lookup.c:250 #11 dounlinkat+0xc1 sys/kern/vfs_syscalls.c:1866 #12 syscall+0xb08 mi_syscall sys/sys/syscall_mi.h:176 [inline] #12 syscall+0xb08 sys/arch/amd64/amd64/trap.c:577 #13 Xsyscall+0x128 ddb{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10195 11085K 11406K 166960K 11772 0 pcb 17 12K 12K 166960K 37 0 rtable 203 7K 8K 166960K 397 0 pf 37 18K 82K 166960K 71 0 ifaddr 40 6K 7K 166960K 57 0 ifgroup 56 2K 2K 166960K 77 0 sysctl 2 1K 1K 166960K 2 0 counters 64 36K 36K 166960K 90 0 ioctlops 0 0K 4K 166960K 1513 0 iov 0 0K 20K 166960K 15 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1339 84K 84K 166960K 1537 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 5K 166960K 5 0 VM map 2 1K 1K 166960K 2 0 sem 7 0K 0K 166960K 8 0 dirhash 12 2K 2K 166960K 12 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 16 57K 89K 166960K 457 0 sigio 0 0K 0K 166960K 2 0 proc 72 91K 128K 166960K 541 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 34 0 in_multi 85 6K 7K 166960K 115 0 ether_multi 1 0K 0K 166960K 5 0 mrt 1 0K 0K 166960K 2 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 61 281K 281K 166960K 61 0 exec 0 0K 1K 166960K 387 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 218 72K 76K 166960K 5696 0 UVM aobj 6 2K 2K 166960K 7 0 pinsyscall 41 82K 102K 166960K 1575 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 19 0 NDP 12 0K 2K 166960K 35 0 temp 40 8635K 8703K 166960K 10187 0 kqueue 14 22K 26K 166960K 55 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 41 0 38 1 0 1 1 0 8 0 rtentry 112 124 0 33 4 0 4 4 0 8 0 unpcb 144 136 0 117 1 0 1 1 0 8 0 syncache 336 9 0 9 1 0 1 1 0 8 1 tcpqe 32 2 0 2 1 0 1 1 0 8 1 tcpcb 808 66 0 60 2 0 2 2 0 8 1 arp 120 21 0 4 1 0 1 1 0 8 0 inpcb 376 231 0 222 2 0 2 2 0 8 1 ip6q 72 2 0 2 1 0 1 1 0 8 1 ip6af 40 4 0 4 1 0 1 1 0 8 1 nd6 136 25 0 3 1 0 1 1 0 8 0 pkpcb 40 3 0 3 1 0 1 1 0 8 1 kcovpl 48 8 0 0 1 0 1 1 0 8 0 ppxss 1168 10 0 10 1 0 1 1 0 8 1 pppxif 1472 1 0 1 1 0 1 1 0 8 1 pfstscr 40 1 0 1 1 0 1 1 0 8 1 pffrag 232 1 0 0 1 0 1 1 0 482 0 pffrnode 88 1 0 0 1 0 1 1 0 8 0 pffrent 40 1 0 0 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 pftag 88 4 0 0 1 0 1 1 0 8 0 pfstitem 24 40 0 2 1 0 1 1 0 8 0 pfstkey 128 44 0 6 2 0 2 2 0 8 0 pfstate 376 40 0 3 4 0 4 4 0 8 0 pfrule 1344 29 0 23 2 1 1 2 0 8 0 art_heap8 4096 2 0 0 2 0 2 2 0 8 0 art_heap4 256 503 0 120 29 0 29 29 0 8 3 art_table 32 505 0 120 4 0 4 4 0 8 0 art_node 16 123 0 42 1 0 1 1 0 8 0 semupl 112 1 0 1 1 0 1 1 0 8 1 semapl 112 6 0 1 1 0 1 1 0 8 0 shmpl 112 4 0 1 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 2005 0 496 95 0 95 95 0 8 0 ffsino 280 2005 0 496 109 0 109 109 0 8 0 nchpl 144 2587 0 898 63 0 63 63 0 8 0 rtmask 32 1 0 1 1 0 1 1 0 8 1 uvmvnodes 80 2230 0 0 46 0 46 46 0 8 0 vnodes 216 2230 0 0 124 0 124 124 0 8 0 namei 1024 7657 0 7656 1 0 1 1 0 8 0 percpumem 16 59 0 13 1 0 1 1 0 8 0 kstatmem 264 38 0 14 2 0 2 2 0 8 0 scxspl 216 9203 0 9201 3 2 1 2 1 8 0 plimitpl 152 44 0 27 1 0 1 1 0 8 0 sigapl 424 768 0 719 8 1 7 7 0 8 0 futexpl 64 2922 0 2920 1 0 1 1 0 8 0 knotepl 120 285 0 0 9 0 9 9 0 8 0 kqueuepl 216 75 0 65 1 0 1 1 0 8 0 pipepl 328 120 0 93 3 0 3 3 0 8 0 fdescpl 504 748 0 718 5 0 5 5 0 8 0 filepl 152 2615 0 2394 12 0 12 12 0 8 3 lockfpl 104 68 0 65 1 0 1 1 0 8 0 lockfspl 48 31 0 28 1 0 1 1 0 8 0 sessionpl 144 24 0 15 1 0 1 1 0 8 0 pgrppl 48 32 0 15 1 0 1 1 0 8 0 ucredpl 104 227 0 214 1 0 1 1 0 8 0 zombiepl 144 722 0 719 1 0 1 1 0 8 0 processpl 1176 768 0 719 5 0 5 5 0 8 0 procpl 656 1179 0 1127 7 1 6 6 0 8 0 srpgc 96 2 0 2 1 0 1 1 0 8 1 sosppl 168 2 0 2 1 0 1 1 0 8 1 sockpl 688 413 0 382 4 0 4 4 0 8 0 mcl64k 65536 5 0 0 1 0 1 1 0 8 0 mcl16k 16384 6 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 113 0 0 15 0 15 15 0 8 0 mcl2k2 2112 1 0 0 1 0 1 1 0 8 0 mcl2k 2048 19 0 0 3 0 3 3 0 8 0 mtagpl 96 32 0 0 1 0 1 1 0 8 0 mbufpl 256 193 0 0 13 0 13 13 0 8 0 bufpl 280 4039 0 129 280 0 280 280 0 8 0 anonpl 24 128203 0 124964 45 0 45 45 0 184 20 amapchunkpl 152 17588 0 17120 25 0 25 25 0 158 3 amappl16 200 2421 0 2397 14 3 11 14 0 8 8 amappl15 192 3 0 3 1 1 0 1 0 8 0 amappl14 184 118 0 106 1 0 1 1 0 8 0 amappl13 176 7 0 7 1 1 0 1 0 8 0 amappl12 168 1410 0 1379 4 1 3 3 0 8 0 amappl11 160 55 0 41 1 0 1 1 0 8 0 amappl10 152 20 0 20 1 1 0 1 0 8 0 amappl9 144 245 0 245 1 1 0 1 0 8 0 amappl8 136 40 0 38 1 0 1 1 0 8 0 amappl7 128 115 0 103 1 0 1 1 0 8 0 amappl6 120 181 0 178 1 0 1 1 0 8 0 amappl5 112 129 0 120 1 0 1 1 0 8 0 amappl4 104 323 0 305 1 0 1 1 0 8 0 amappl3 96 3362 0 3254 4 0 4 4 0 8 0 amappl2 88 668 0 608 2 0 2 2 0 8 0 amappl1 80 9346 0 8780 14 0 14 14 0 8 0 amappl 88 5306 0 5144 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 128 253 0 253 1 1 0 1 0 8 0 dma64 64 6 0 6 1 1 0 1 0 8 0 dma32 32 8 0 8 2 1 1 1 0 8 1 dma16 16 19 0 18 1 0 1 1 0 8 0 aobjpl 72 6 0 1 1 0 1 1 0 8 0 uaddrrnd 24 748 0 718 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 748 0 718 1 0 1 1 0 8 0 vmmpekpl 168 7451 0 7410 3 0 3 3 0 8 0 vmmpepl 168 51415 0 49632 92 0 92 92 0 357 6 vmsppl 456 747 0 718 5 0 5 5 0 8 0 rwobjpl 64 18814 0 15670 52 0 52 52 0 8 0 pdppl 4096 1503 0 1436 97 24 73 83 0 8 6 pvpl 32 14282 0 0 117 1 116 116 0 265 0 pmappl 248 747 0 718 3 0 3 3 0 8 0 extentpl 40 55 0 38 1 0 1 1 0 8 0 phpool 112 273 0 26 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(ffffffff8383aff0) 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+0x25 kd_curproc sys/dev/kcov.c:584 [inline] __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x25 sys/dev/kcov.c:153 __mp_lock(ffffffff839068f0) at __mp_lock+0x1a3 __mp_lock_spin sys/kern/kern_lock.c:113 [inline] __mp_lock(ffffffff839068f0) at __mp_lock+0x1a3 sys/kern/kern_lock.c:144 intr_handler(ffff8000344bba30,ffff800000069c00) at intr_handler+0xe1 sys/arch/amd64/amd64/intr.c:553 Xintr_ioapic_edge16_untramp() at Xintr_ioapic_edge16_untramp+0x18f __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x33 kd_curproc sys/dev/kcov.c:585 [inline] __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x33 sys/dev/kcov.c:153 __mp_lock(ffffffff839068f0) at __mp_lock+0x1a3 __mp_lock_spin sys/kern/kern_lock.c:113 [inline] __mp_lock(ffffffff839068f0) at __mp_lock+0x1a3 sys/kern/kern_lock.c:144 intr_handler(ffff8000344bbba0,ffff800000079f00) at intr_handler+0xe1 sys/arch/amd64/amd64/intr.c:553 Xintr_ioapic_edge23_untramp() at Xintr_ioapic_edge23_untramp+0x18f Xsyscall() at Xsyscall+0x111 end of kernel end trace frame: 0x7e4403a14160, count: -12 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:438 witness_checkorder(fffffd806dd1aa90,9,0) at witness_checkorder+0x1047 rw_do_enter_write(fffffd806dd1aa78,1) at rw_do_enter_write+0xb7 sys/kern/kern_rwlock.c:233 rrw_enter(fffffd806dd1aa78,1) at rrw_enter+0xc6 sys/kern/kern_rwlock.c:616 VOP_LOCK(fffffd806dd1ba68,2001) at VOP_LOCK+0xa6 sys/kern/vfs_vops.c:524 vn_lock(fffffd806dd1ba68,2001) at vn_lock+0xa4 sys/kern/vfs_vnops.c:570 vn_closefile(fffffd806be54b58,ffff8000330ab4b0) at vn_closefile+0x111 vn_close sys/kern/vfs_vnops.c:292 [inline] vn_closefile(fffffd806be54b58,ffff8000330ab4b0) at vn_closefile+0x111 sys/kern/vfs_vnops.c:615 fdrop(fffffd806be54b58,ffff8000330ab4b0) at fdrop+0x126 sys/kern/kern_descrip.c:1265 knote_drop(fffffd806ba19178,ffff8000330ab4b0) at knote_drop+0x1a1 sys/kern/kern_event.c:2142 knote_remove(ffff8000330ab4b0,fffffd806eb78000,fffffd806eb78088,4,0) at knote_remove+0x239 sys/kern/kern_event.c:2025 knote_fdclose(ffff8000330ab4b0,4) at knote_fdclose+0xf9 sys/kern/kern_event.c:2049 fdrelease(ffff8000330ab4b0,4) at fdrelease+0xf9 sys/kern/kern_descrip.c:749 syscall(ffff8000318a9250) at syscall+0xbc6 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff8000318a9250) at syscall+0xbc6 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x17605260050, count: -14