witness: lock order reversal: 1st 0xffff8000016351b8 sbufsnd (&so->so_snd.sb_lock) 2nd 0xfffffd8063b7cb58 inode (&ip->i_lock) lock order [1] sbufsnd (&so->so_snd.sb_lock) -> [2] inode (&ip->i_lock) lock order data 0xffffffff83412b2d -> 0xffffffff83384f88 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:890 #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+0xdfc 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:775 #12 Xsyscall+0x128 lock order [3] sbufrcv (&so->so_rcv.sb_lock) -> [1] sbufsnd (&so->so_snd.sb_lock) #0 rw_do_enter_write+0xba sys/kern/kern_rwlock.c:234 #1 sblock+0xb6 sys/kern/uipc_socket2.c:536 #2 sosplice+0x312 sys/kern/uipc_socket.c:1347 #3 sys_setsockopt+0x2ba sys/kern/uipc_syscalls.c:1227 #4 syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline] #4 syscall+0xbd4 sys/arch/amd64/amd64/trap.c:775 #5 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(fffffd8063b7cb58,9,0) at witness_checkorder+0x10d1 sys/kern/subr_witness.c:-1 rw_do_enter_write(fffffd8063b7cb40,1) at rw_do_enter_write+0xba sys/kern/kern_rwlock.c:234 rrw_enter(fffffd8063b7cb40,1) at rrw_enter+0xc6 sys/kern/kern_rwlock.c:621 VOP_LOCK(fffffd80768a8a28,2001) at VOP_LOCK+0xbd sys/kern/vfs_vops.c:527 vn_lock(fffffd80768a8a28,2001) at vn_lock+0xa4 sys/kern/vfs_vnops.c:570 vfs_lookup(ffff80003084c4b0) at vfs_lookup+0x11c sys/kern/vfs_lookup.c:-1 namei(ffff80003084c4b0) at namei+0x7ca sys/kern/vfs_lookup.c:250 unp_connect(ffff800001634fd0,fffffd805e9dbf00,ffff800034fd0560) at unp_connect+0x29d sys/kern/uipc_usrreq.c:872 uipc_dgram_send(ffff800001634fd0,fffffd805f696800,fffffd805e9dbf00,0) at uipc_dgram_send+0x163 sys/kern/uipc_usrreq.c:609 sosend(ffff800001634fd0,fffffd805e9dbf00,ffff80003084c738,0,0,e) at sosend+0x804 sys/kern/uipc_socket.c:-1 sendit(ffff800034fd0560,5,ffff80003084c8b8,e,ffff80003084c970) at sendit+0x5a5 sys/kern/uipc_syscalls.c:785 sys_sendmsg(ffff800034fd0560,ffff80003084ca20,ffff80003084c970) at sys_sendmsg+0x246 sys/kern/uipc_syscalls.c:603 syscall(ffff80003084ca20) at syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003084ca20) at syscall+0xbd4 sys/arch/amd64/amd64/trap.c:775 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x981d83c6640, count: -15 ddb{0}> show registers rdi 0 rsi 0x80000 acpi_pdirpa+0x6be71 rbp 0xffff80003084c120 rbx 0 rdx 0xffff80000158a800 rcx 0xffff800034fd0560 rax 0x7ffff acpi_pdirpa+0x6be70 r8 0xffff80003084c000 r9 0x8080808080808080 r10 0x9ccd895a92c7ae98 r11 0x57eba196f9e84492 r12 0xfffffd8003f5c8c0 r13 0xfffffd8004743e88 r14 0x3 r15 0xffffffff8341c190 substchar+0x3540 rip 0xffffffff831ea265 db_enter+0x25 cs 0x8 rflags 0x246 rsp 0xffff80003084c110 ss 0x10 db_enter+0x25: addq $0x8,%rsp ddb{0}> show proc PROC (syz-executor) tid=517464 pid=73353 tcnt=2 stat=onproc flags process=10 proc=4000000 runpri=32, usrpri=86, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff80002a2607e0,0xffff80003c45d278 process=0xffff80003c4484f8 user=0xffff800030847000, vmspace=0xfffffd806c9a73e8 estcpu=36, cpticks=1, pctcpu=0.0, user=0, sys=1, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 40175 219839 92329 0 7 0 syz-executor 40175 502344 92329 0 3 0x4000080 msgwait syz-executor 73353 325401 25641 60929 2 0x10 syz-executor *73353 517464 25641 60929 7 0x4000010 syz-executor 51465 480076 78282 0 3 0x90 nanoslp syz-executor 51465 421775 78282 0 3 0x4000090 sbwait syz-executor 51465 442357 78282 0 3 0x4000090 fsleep syz-executor 15755 183068 93252 0 2 0 syz-executor 15755 257775 93252 0 3 0x4000080 fifor syz-executor 15755 524100 93252 0 3 0x4000080 fsleep syz-executor 47943 104325 16309 0 3 0x80 nanoslp syz-executor 47943 435041 16309 0 3 0x4000080 msgwait syz-executor 47943 100199 16309 0 3 0x4000080 tunread syz-executor 47943 156227 16309 0 3 0x4000080 fsleep syz-executor 92329 96019 21236 0 3 0x82 nanoslp syz-executor 88635 223927 71928 0 3 0x80 nanoslp syz-executor 88635 138045 71928 0 3 0x4000080 sbwait syz-executor 88635 439900 71928 0 3 0x4000080 fsleep syz-executor 88635 239127 71928 0 3 0x4000080 fsleep syz-executor 88635 362463 71928 0 3 0x4000080 fsleep syz-executor 78282 179114 21236 0 3 0x82 nanoslp syz-executor 13067 478897 0 0 3 0x14280 nfsidl nfsio 42696 233493 0 0 3 0x14280 nfsidl nfsio 77100 374392 0 0 3 0x14280 nfsidl nfsio 64764 150187 0 0 3 0x14280 nfsidl nfsio 55864 378047 0 0 3 0x14280 nfsidl nfsio 15283 61676 0 0 3 0x14280 nfsidl nfsio 16774 147995 0 0 3 0x14280 nfsidl nfsio 71072 218213 0 0 3 0x14280 nfsidl nfsio 36243 399255 0 0 3 0x14280 nfsidl nfsio 14329 413184 0 0 3 0x14280 nfsidl nfsio 24286 241642 0 0 3 0x14280 nfsidl nfsio 82458 195218 0 0 3 0x14280 nfsidl nfsio 244 186179 0 0 3 0x14280 nfsidl nfsio 2986 234003 0 0 3 0x14280 nfsidl nfsio 3004 335078 0 0 3 0x14280 nfsidl nfsio 2165 304945 0 0 3 0x14280 nfsidl nfsio 91814 433323 0 0 3 0x14280 nfsidl nfsio 41709 206738 0 0 3 0x14280 nfsidl nfsio 34183 341373 0 0 3 0x14280 nfsidl nfsio 92413 157557 0 0 3 0x14280 nfsidl nfsio 11248 328638 21236 0 3 0x82 nanoslp syz-executor 16309 513081 21236 0 3 0x82 nanoslp syz-executor 71928 296943 21236 0 3 0x82 nanoslp syz-executor 93252 293829 21236 0 3 0x82 nanoslp syz-executor 25641 194925 21236 0 3 0x82 nanoslp syz-executor 95292 198261 21236 0 3 0x82 nanoslp syz-executor 21236 4632 20600 0 3 0x82 kqread syz-executor 20600 327476 84561 0 3 0x10008a sigsusp ksh 84561 479455 48175 0 3 0x98 kqread sshd-session 48175 121857 57053 0 3 0x92 kqread sshd-session 43779 188617 1 0 3 0x100083 ttyopn getty 57053 20618 1 0 3 0x88 kqread sshd 94243 139924 95236 74 3 0x1100092 bpf pflogd 95236 449535 1 0 3 0x80 sbwait pflogd 92835 309621 21887 73 3 0x1100090 kqread syslogd 21887 372374 1 0 3 0x100082 sbwait syslogd 85652 423040 1 0 3 0x100080 kqread resolvd 40555 334184 7332 77 3 0x100092 kqread dhcpleased 26199 193531 7332 77 3 0x100092 kqread dhcpleased 7332 101438 1 0 3 0x80 kqread dhcpleased 38040 154463 0 0 3 0x14200 bored smr 4177 397457 0 0 2 0x14200 zerothread 11211 255000 0 0 3 0x14200 aiodoned aiodoned 25031 18797 0 0 3 0x14200 syncer update 31416 396027 0 0 3 0x14200 cleaner cleaner 36004 361563 0 0 3 0x14200 reaper reaper 60991 301413 0 0 3 0x14200 pgdaemon pagedaemon 47858 182106 0 0 3 0x14200 bored viomb 51371 313263 0 0 3 0x40014200 acpi0 acpi0 53871 122939 0 0 3 0x40014200 idle1 13968 269567 0 0 3 0x14200 bored softnet1 60815 239835 0 0 3 0x14200 bored softnet0 55566 418453 0 0 3 0x14200 smrbar systqmp 26909 37660 0 0 3 0x14200 bored systq 22622 40046 0 0 3 0x14200 tmoslp softclockmp 10648 137739 0 0 3 0x40014200 tmoslp softclock 15718 258124 0 0 3 0x40014200 idle0 1 133694 0 0 3 0x82 wait init 0 0 -1 0 3 0x10010200 scheduler swapper ddb{0}> show all locks Process 73353 (syz-executor) thread 0xffff800034fd0560 (517464) exclusive kernel_lock &kernel_lock r = 0 (0xffffffff839333c0) #0 witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5f1 sys/kern/subr_witness.c:1160 #1 unp_connect+0x28c sys/kern/uipc_usrreq.c:872 #2 uipc_dgram_send+0x163 sys/kern/uipc_usrreq.c:609 #3 sosend+0x804 sys/kern/uipc_socket.c:-1 #4 sendit+0x5a5 sys/kern/uipc_syscalls.c:785 #5 sys_sendmsg+0x246 sys/kern/uipc_syscalls.c:603 #6 syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline] #6 syscall+0xbd4 sys/arch/amd64/amd64/trap.c:775 #7 Xsyscall+0x128 exclusive rwlock sbufsnd r = 0 (0xffff8000016351b8) #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 sosend+0x2e9 sys/kern/uipc_socket.c:639 #4 sendit+0x5a5 sys/kern/uipc_syscalls.c:785 #5 sys_sendmsg+0x246 sys/kern/uipc_syscalls.c:603 #6 syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline] #6 syscall+0xbd4 sys/arch/amd64/amd64/trap.c:775 #7 Xsyscall+0x128 Process 88635 (syz-executor) thread 0xffff80003c45c570 (138045) exclusive rrwlock inode r = 0 (0xfffffd8063b7c6b8) #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+0x93a sys/kern/vfs_lookup.c:566 #10 namei+0x7ca sys/kern/vfs_lookup.c:250 #11 vn_open+0x15a sys/kern/vfs_vnops.c:140 #12 vndioctl+0xc43 sys/dev/vnd.c:458 #13 VOP_IOCTL+0xac sys/kern/vfs_vops.c:264 #14 vn_ioctl+0xf8 sys/kern/vfs_vnops.c:531 #15 sys_ioctl+0x674 sys/kern/sys_generic.c:-1 #16 syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline] #16 syscall+0xbd4 sys/arch/amd64/amd64/trap.c:775 #17 Xsyscall+0x128 Process 55566 (systqmp) thread 0xffff8000ffffe7c8 (418453) shared rwlock systqmp r = 0 (0xffffffff838a1bc8) #0 witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5f1 sys/kern/subr_witness.c:1160 #1 taskq_thread+0x12a sys/kern/kern_task.c:442 #2 proc_trampoline+0x10 ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 11107 12101K 14038K 166960K 13980 0 pcb 20 18K 20K 166960K 678 0 rtable 219 12K 12K 166960K 843 0 pf 40 18K 19K 166960K 203 0 ifaddr 41 7K 7K 166960K 166 0 ifgroup 65 2K 2K 166960K 269 0 sysctl 4 1K 9K 166960K 14 0 counters 76 37K 38K 166960K 330 0 ioctlops 0 0K 4K 166960K 1946 0 iov 0 0K 20K 166960K 165 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1452 91K 92K 166960K 2873 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 5K 166960K 13 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 1K 166960K 166 0 dirhash 12 2K 2K 166960K 42 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 18 65K 240K 166960K 1815 0 sigio 0 0K 0K 166960K 101 0 proc 73 115K 164K 166960K 903 0 subproc 72 4K 4K 166960K 151 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 388 0 in_multi 78 5K 7K 166960K 271 0 ether_multi 1 0K 0K 166960K 21 0 mrt 1 0K 0K 166960K 15 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 265 1182K 1182K 166960K 265 0 exec 0 0K 1K 166960K 879 0 fusefs mount 1 32K 32K 166960K 1 0 pfkey data 0 0K 0K 166960K 5 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 265 176K 192K 166960K 17939 0 UVM aobj 67 15K 15K 166960K 74 0 pinsyscall 43 86K 102K 166960K 3139 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 214 0 NDP 18 0K 2K 166960K 119 0 temp 80 8688K 8812K 166960K 85067 0 kqueue 14 22K 32K 166960K 336 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 120 212 0 209 2 1 1 2 0 8 0 rtentry 176 258 0 175 6 1 5 6 0 8 0 unpcb 144 1467 0 1439 10 6 4 6 0 8 2 syncache 336 6 0 6 3 3 0 1 0 8 0 tcpqe 32 3 0 3 2 2 0 1 0 8 0 tcpcb 736 711 0 705 18 16 2 7 0 8 1 arp 136 45 0 30 1 0 1 1 0 8 0 inpcb 328 2583 0 2571 18 16 2 10 0 8 0 ip6q 72 67 0 67 2 2 0 1 0 8 0 ip6af 40 134 0 134 2 2 0 1 0 8 0 nd6 152 51 0 31 1 0 1 1 0 8 0 pkpcb 40 15 0 15 4 3 1 1 0 8 1 kcovpl 48 16 0 8 1 0 1 1 0 8 0 ppxss 1192 102 0 101 3 2 1 1 0 8 0 pppxif 1504 6 0 5 5 4 1 1 0 8 0 pffrag 232 26 0 10 1 0 1 1 0 482 0 pffrnode 88 25 0 10 1 0 1 1 0 8 0 pffrent 40 36 0 20 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 pfsrclim 320 2 0 2 1 1 0 1 0 8 0 pfrule 1360 1 0 1 1 1 0 1 0 8 0 rttmr 136 1 0 1 1 1 0 1 0 8 0 art_heap8 4096 4 0 0 4 0 4 4 0 8 0 art_heap4 256 1111 0 795 32 10 22 29 0 8 2 art_table 40 1115 0 795 5 1 4 5 0 8 0 art_node 32 255 0 181 1 0 1 1 0 8 0 sysvmsgpl 40 11 0 5 1 0 1 1 0 8 0 semapl 112 163 0 153 1 0 1 1 0 8 0 shmpl 112 63 0 3 2 0 2 2 0 8 0 dirhash 1024 37 0 20 3 0 3 3 0 8 0 dino2pl 256 4892 0 3368 96 0 96 96 0 8 0 ffsino 296 4892 0 3368 119 1 118 118 0 8 0 nchpl 144 7288 0 5551 65 0 65 65 0 8 0 rtmask 32 13 0 13 5 5 0 1 0 8 0 vnodes 216 5649 0 0 314 0 314 314 0 8 0 namei 1024 27293 0 27292 8 7 1 3 0 8 0 percpumem 16 180 0 127 1 0 1 1 0 8 0 vcpupl 3968 5 0 1 1 0 1 1 0 8 0 vmpool 848 8 0 4 1 0 1 1 0 8 0 kstatmem 264 170 0 138 5 2 3 3 0 8 0 scsiplug 72 12 0 12 2 1 1 1 0 8 1 scxspl 216 57572 0 57572 18 17 1 8 1 8 1 plimitpl 152 582 0 565 1 0 1 1 0 8 0 sigapl 424 2140 0 2072 10 2 8 8 0 8 0 knotepl 120 879 0 0 27 0 27 27 0 8 0 kqueuepl 224 568 0 557 4 3 1 2 0 8 0 pipepl 344 405 0 376 9 5 4 9 0 8 0 fdescpl 528 2079 0 2047 3 0 3 3 0 8 0 filepl 160 15239 0 15008 33 19 14 22 0 8 2 lockfpl 104 630 0 628 2 1 1 2 0 8 0 lockfspl 48 270 0 268 1 0 1 1 0 8 0 sessionpl 144 31 0 22 1 0 1 1 0 8 0 pgrppl 48 54 0 37 1 0 1 1 0 8 0 ucredpl 104 2423 0 2407 1 0 1 1 0 8 0 zombiepl 144 2261 0 2259 1 0 1 1 0 8 0 processpl 1232 2140 0 2072 7 1 6 6 0 8 0 procpl 664 5048 0 4967 10 2 8 8 0 8 1 sosppl 176 6 0 6 3 2 1 1 0 8 1 sockpl 752 4390 0 4347 37 26 11 20 0 8 6 mcl64k 65536 19 0 0 3 0 3 3 0 8 0 mcl16k 16384 1 0 0 1 0 1 1 0 8 0 mcl12k 12288 2 0 0 1 0 1 1 0 8 0 mcl9k 9216 2 0 0 1 0 1 1 0 8 0 mcl8k 8192 4 0 0 1 0 1 1 0 8 0 mcl4k 4096 125 0 0 16 0 16 16 0 8 0 mcl2k2 2112 1 0 0 1 0 1 1 0 8 0 mcl2k 2048 53 0 0 5 0 5 5 0 8 0 mtagpl 96 4 0 0 1 0 1 1 0 8 0 mbufpl 256 763 0 0 48 0 48 48 0 8 0 bufpl 280 24329 0 18193 439 0 439 439 0 8 0 anonpl 32 13745 0 0 112 1 111 111 0 246 0 amapchunkpl 152 62253 0 61683 55 22 33 38 0 158 10 amappl16 200 8678 0 8647 66 50 16 29 0 8 8 amappl15 192 5 0 5 1 1 0 1 0 8 0 amappl14 184 22 0 21 1 0 1 1 0 8 0 amappl13 176 521 0 520 1 0 1 1 0 8 0 amappl12 168 2488 0 2445 3 1 2 3 0 8 0 amappl11 160 52 0 52 2 1 1 1 0 8 1 amappl10 152 49 0 34 1 0 1 1 0 8 0 amappl9 144 297 0 297 1 1 0 1 0 8 0 amappl8 136 26 0 23 1 0 1 1 0 8 0 amappl7 128 114 0 113 1 0 1 1 0 8 0 amappl6 120 381 0 367 1 0 1 1 0 8 0 amappl5 112 79 0 68 1 0 1 1 0 8 0 amappl4 104 474 0 444 1 0 1 1 0 8 0 amappl3 96 10860 0 10747 4 1 3 3 0 8 0 amappl2 88 2191 0 2112 2 0 2 2 0 8 0 amappl1 80 16687 0 16087 16 2 14 14 0 8 0 amappl 88 16796 0 16609 5 0 5 5 0 92 0 uvmvnodes 80 173 0 0 4 0 4 4 0 8 0 dma32768 32768 1 0 1 1 0 1 1 0 8 1 dma8192 8192 1 0 1 1 1 0 1 0 8 0 dma4096 4096 2 0 2 2 1 1 1 0 8 1 dma1024 1024 1 0 0 1 0 1 1 0 8 0 dma512 512 1 0 1 1 1 0 1 0 8 0 dma256 256 6 0 6 1 1 0 1 0 8 0 dma128 128 257 0 257 4 3 1 1 0 8 1 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 19 0 18 1 0 1 1 0 8 0 aobjpl 72 73 0 7 2 0 2 2 0 8 0 uaddrrnd 24 2079 0 2047 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 2079 0 2047 1 0 1 1 0 8 0 vmmpekpl 168 18060 0 18003 4 0 4 4 0 8 0 vmmpepl 168 138344 0 136337 127 17 110 110 0 357 10 vmsppl 488 2078 0 2047 6 1 5 5 0 8 0 rwobjpl 80 39044 0 37829 44 9 35 35 0 8 1 pdppl 4096 4181 0 4106 119 40 79 83 0 8 4 pvpl 32 22567 0 0 182 0 182 182 0 265 0 pmappl 256 2086 0 2051 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 368 0 81 9 0 9 9 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(fffffd8063b7cb58,9,0) at witness_checkorder+0x10d1 sys/kern/subr_witness.c:-1 rw_do_enter_write(fffffd8063b7cb40,1) at rw_do_enter_write+0xba sys/kern/kern_rwlock.c:234 rrw_enter(fffffd8063b7cb40,1) at rrw_enter+0xc6 sys/kern/kern_rwlock.c:621 VOP_LOCK(fffffd80768a8a28,2001) at VOP_LOCK+0xbd sys/kern/vfs_vops.c:527 vn_lock(fffffd80768a8a28,2001) at vn_lock+0xa4 sys/kern/vfs_vnops.c:570 vfs_lookup(ffff80003084c4b0) at vfs_lookup+0x11c sys/kern/vfs_lookup.c:-1 namei(ffff80003084c4b0) at namei+0x7ca sys/kern/vfs_lookup.c:250 unp_connect(ffff800001634fd0,fffffd805e9dbf00,ffff800034fd0560) at unp_connect+0x29d sys/kern/uipc_usrreq.c:872 uipc_dgram_send(ffff800001634fd0,fffffd805f696800,fffffd805e9dbf00,0) at uipc_dgram_send+0x163 sys/kern/uipc_usrreq.c:609 sosend(ffff800001634fd0,fffffd805e9dbf00,ffff80003084c738,0,0,e) at sosend+0x804 sys/kern/uipc_socket.c:-1 sendit(ffff800034fd0560,5,ffff80003084c8b8,e,ffff80003084c970) at sendit+0x5a5 sys/kern/uipc_syscalls.c:785 sys_sendmsg(ffff800034fd0560,ffff80003084ca20,ffff80003084c970) at sys_sendmsg+0x246 sys/kern/uipc_syscalls.c:603 syscall(ffff80003084ca20) at syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003084ca20) at syscall+0xbd4 sys/arch/amd64/amd64/trap.c:775 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x981d83c6640, count: -15 ddb{0}> machine ddbcpu 1 Stopped at x86_ipi_db+0x27: addq $0x8,%rsp ddb{1}> trace x86_ipi_db(ffff8000299ddff0) 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 __mp_lock(ffffffff83932bc0) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:142 [inline] __mp_lock(ffffffff83932bc0) at __mp_lock+0x192 sys/kern/kern_lock.c:173 syscall(ffff80002a35c510) at syscall+0xaf4 mi_syscall sys/sys/syscall_mi.h:175 [inline] syscall(ffff80002a35c510) at syscall+0xaf4 sys/arch/amd64/amd64/trap.c:775 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7a62ce431b40, count: -6