witness: lock order reversal: 1st 0xffff8000012eac20 sbufsnd (&so->so_snd.sb_lock) 2nd 0xfffffd8064ab65f0 inode (&ip->i_lock) lock order [1] sbufsnd (&so->so_snd.sb_lock) -> [2] inode (&ip->i_lock) lock order data 0xffffffff830be9a1 -> 0xffffffff8306b4aa is missing lock order [2] inode (&ip->i_lock) -> [3] sbufrcv (&so->so_rcv.sb_lock) #0 rw_enter+0x122 #1 sblock+0xb7 sys/kern/uipc_socket2.c:549 #2 soreceive+0x295 sys/kern/uipc_socket.c:945 #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+0xf6 sys/kern/vfs_vnops.c:525 #10 sys_ioctl+0x67c #11 syscall+0xbb6 mi_syscall sys/sys/syscall_mi.h:178 [inline] #11 syscall+0xbb6 sys/arch/amd64/amd64/trap.c:577 #12 Xsyscall+0x128 lock order [3] sbufrcv (&so->so_rcv.sb_lock) -> [1] sbufsnd (&so->so_snd.sb_lock) #0 rw_enter+0x122 #1 sblock+0xb7 sys/kern/uipc_socket2.c:549 #2 sosplice+0x3f4 sys/kern/uipc_socket.c:1454 #3 sys_setsockopt+0x2ba sys/kern/uipc_syscalls.c:1228 #4 syscall+0xbb6 mi_syscall sys/sys/syscall_mi.h:178 [inline] #4 syscall+0xbb6 sys/arch/amd64/amd64/trap.c:577 #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:437 witness_checkorder(fffffd8064ab65f0,9,0) at witness_checkorder+0x1047 rw_enter(fffffd8064ab65e0,1) at rw_enter+0x122 rrw_enter(fffffd8064ab65e0,1) at rrw_enter+0xbe sys/kern/kern_rwlock.c:464 VOP_LOCK(fffffd806a1f6298,2001) at VOP_LOCK+0xa6 sys/kern/vfs_vops.c:524 vn_lock(fffffd806a1f6298,2001) at vn_lock+0xa4 sys/kern/vfs_vnops.c:564 vfs_lookup(ffff8000359b1718) at vfs_lookup+0x109 sys/kern/vfs_lookup.c:418 namei(ffff8000359b1718) at namei+0x7aa sys/kern/vfs_lookup.c:250 unp_connect(ffff8000012eaa78,fffffd805f2c4400,ffff80002a0e8548) at unp_connect+0x27d sys/kern/uipc_usrreq.c:868 uipc_dgram_send(ffff8000012eaa78,fffffd806ce97400,fffffd805f2c4400,0) at uipc_dgram_send+0x131 sys/kern/uipc_usrreq.c:607 sosend(ffff8000012eaa78,fffffd805f2c4400,ffff8000359b19a8,0,0,0) at sosend+0xa40 sendit(ffff80002a0e8548,4,ffff8000359b1b20,0,ffff8000359b1be0) at sendit+0x721 sys/kern/uipc_syscalls.c:786 sys_sendmsg(ffff80002a0e8548,ffff8000359b1c90,ffff8000359b1be0) at sys_sendmsg+0x246 sys/kern/uipc_syscalls.c:604 syscall(ffff8000359b1c90) at syscall+0xbb6 mi_syscall sys/sys/syscall_mi.h:178 [inline] syscall(ffff8000359b1c90) at syscall+0xbb6 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x4de6c046fe0, count: -15 ddb{0}> show registers rdi 0 rsi 0x40000 acpi_pdirpa+0x2be71 rbp 0xffff8000359b1370 rbx 0xfffffd80042c3bd0 rdx 0xffff80000128f100 rcx 0xffff80002a0e8548 rax 0x3ffff acpi_pdirpa+0x2be70 r8 0xffff8000359b1250 r9 0x8080808080808080 r10 0x53ddbf047d7d905e r11 0x1cec5f140289ffeb r12 0 r13 0xfffffd8003adae00 r14 0x3 r15 0xffffffff rip 0xffffffff81610e15 db_enter+0x25 cs 0x8 rflags 0x246 rsp 0xffff8000359b1360 ss 0x10 db_enter+0x25: addq $0x8,%rsp ddb{0}> show proc PROC (syz-executor) tid=475595 pid=6904 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=0xffff80002a0e8ce0,0xffffffff835f1e20 process=0xffff800034394d98 user=0xffff8000359ac000, vmspace=0xfffffd80701c6c68 estcpu=36, cpticks=0, pctcpu=0.0, user=0, sys=0, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 6904 202614 84086 0 7 0 syz-executor * 6904 475595 84086 0 7 0x4000000 syz-executor 91435 338640 15413 0 4 0 syz-executor 91435 161840 15413 0 3 0x4000080 fsleep syz-executor 86264 251680 76088 0 3 0x80 nanoslp syz-executor 86264 260207 76088 0 3 0x4000080 msgwait syz-executor 86264 482366 76088 0 3 0x4000080 msgwait syz-executor 86264 289286 76088 0 3 0x4000080 msgwait syz-executor 13432 118123 74301 0 3 0x80 nanoslp syz-executor 13432 473265 74301 0 3 0x4000080 sbwait syz-executor 13432 455134 74301 0 3 0x4000080 fsleep syz-executor 1124 360809 68520 0 3 0x80 nanoslp syz-executor 1124 474221 68520 0 3 0x4000080 ttyin syz-executor 1124 399313 68520 0 3 0x4000080 fsleep syz-executor 1124 149118 68520 0 3 0x4000080 fsleep syz-executor 85340 370603 1 0 3 0x100083 ttyin getty 49473 126573 0 0 3 0x14280 nfsidl nfsio 99502 336059 0 0 3 0x14280 nfsidl nfsio 78650 10285 0 0 3 0x14280 nfsidl nfsio 24404 45109 0 0 3 0x14280 nfsidl nfsio 79250 288933 0 0 3 0x14280 nfsidl nfsio 96213 453493 0 0 3 0x14280 nfsidl nfsio 40426 503881 0 0 3 0x14280 nfsidl nfsio 73391 445827 0 0 3 0x14280 nfsidl nfsio 99384 21781 0 0 3 0x14280 nfsidl nfsio 34574 179542 0 0 3 0x14280 nfsidl nfsio 54695 406573 0 0 3 0x14280 nfsidl nfsio 96301 490444 0 0 3 0x14280 nfsidl nfsio 17758 503453 0 0 3 0x14280 nfsidl nfsio 59309 315896 0 0 3 0x14280 nfsidl nfsio 19577 385227 0 0 3 0x14280 nfsidl nfsio 18788 89186 0 0 3 0x14280 nfsidl nfsio 57380 444998 0 0 3 0x14280 nfsidl nfsio 68276 300269 0 0 3 0x14280 nfsidl nfsio 41670 417641 0 0 3 0x14280 nfsidl nfsio 63265 398374 0 0 3 0x14280 nfsidl nfsio 66629 194244 0 0 3 0x14200 bored sosplice 68520 256197 86799 0 3 0x82 nanoslp syz-executor 76088 367922 86799 0 3 0x82 nanoslp syz-executor 5377 63498 86799 0 3 0x82 nanoslp syz-executor 97613 229580 86799 0 3 0x82 nanoslp syz-executor 15413 336956 86799 0 3 0x82 nanoslp syz-executor 84086 1597 86799 0 3 0x82 nanoslp syz-executor 74301 499201 86799 0 3 0x82 nanoslp syz-executor 26464 316223 86799 0 3 0x2 biowait syz-executor 86799 156864 49786 0 3 0x82 kqread syz-executor 49786 514115 52724 0 3 0x10008a sigsusp ksh 52724 117060 16448 0 3 0x98 kqread sshd-session 16448 266080 23168 0 3 0x92 kqread sshd-session 23168 426124 1 0 3 0x88 kqread sshd 50072 77360 99556 74 3 0x1100092 bpf pflogd 99556 256943 1 0 3 0x80 sbwait pflogd 52662 188366 36541 73 3 0x1100090 kqread syslogd 36541 207840 1 0 3 0x100082 sbwait syslogd 1759 385584 1 0 3 0x100080 kqread resolvd 95308 670 69127 77 3 0x100092 kqread dhcpleased 47881 305514 69127 77 3 0x100092 kqread dhcpleased 69127 105969 1 0 3 0x80 kqread dhcpleased 85193 390167 0 0 3 0x14200 bored smr 44585 221139 0 0 3 0x14200 pgzero zerothread 98423 186562 0 0 3 0x14200 aiodoned aiodoned 4054 444452 0 0 3 0x14200 syncer update 42598 401588 0 0 3 0x14200 cleaner cleaner 93172 201167 0 0 3 0x14200 reaper reaper 29014 220467 0 0 3 0x14200 pgdaemon pagedaemon 75709 103309 0 0 3 0x14200 bored viomb 65946 273550 0 0 3 0x40014200 acpi0 acpi0 29309 137177 0 0 3 0x40014200 idle1 92727 121300 0 0 3 0x14200 bored softnet3 91886 245360 0 0 3 0x14200 bored softnet2 83299 47478 0 0 3 0x14200 bored softnet1 70429 380204 0 0 3 0x14200 bored softnet0 5245 95506 0 0 3 0x14200 bored systqmp 44448 474333 0 0 3 0x14200 bored systq 75987 142163 0 0 3 0x14200 tmoslp softclockmp 79011 176151 0 0 3 0x40014200 tmoslp softclock 11677 292677 0 0 3 0x40014200 idle0 1 215860 0 0 3 0x80082 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks Process 6904 (syz-executor) thread 0xffff80002a0e8548 (475595) exclusive kernel_lock &kernel_lock r = 0 (0xffffffff8359d538) #0 witness_lock+0x5bb stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5bb sys/kern/subr_witness.c:1155 #1 unp_connect+0x26c sys/kern/uipc_usrreq.c:868 #2 uipc_dgram_send+0x131 sys/kern/uipc_usrreq.c:607 #3 sosend+0xa40 #4 sendit+0x721 sys/kern/uipc_syscalls.c:786 #5 sys_sendmsg+0x246 sys/kern/uipc_syscalls.c:604 #6 syscall+0xbb6 mi_syscall sys/sys/syscall_mi.h:178 [inline] #6 syscall+0xbb6 sys/arch/amd64/amd64/trap.c:577 #7 Xsyscall+0x128 exclusive rwlock sbufsnd r = 0 (0xffff8000012eac20) #0 witness_lock+0x5bb stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5bb sys/kern/subr_witness.c:1155 #1 rw_enter+0x41b sys/kern/kern_rwlock.c:309 #2 sblock+0xb7 sys/kern/uipc_socket2.c:549 #3 sosend+0x2ff sys/kern/uipc_socket.c:681 #4 sendit+0x721 sys/kern/uipc_syscalls.c:786 #5 sys_sendmsg+0x246 sys/kern/uipc_syscalls.c:604 #6 syscall+0xbb6 mi_syscall sys/sys/syscall_mi.h:178 [inline] #6 syscall+0xbb6 sys/arch/amd64/amd64/trap.c:577 #7 Xsyscall+0x128 Process 26464 (syz-executor) thread 0xffff8000ffffd450 (316223) exclusive rrwlock inode r = 0 (0xfffffd806e067d60) #0 witness_lock+0x5bb stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5bb sys/kern/subr_witness.c:1155 #1 rw_enter+0x41b sys/kern/kern_rwlock.c:309 #2 rrw_enter+0xbe sys/kern/kern_rwlock.c:464 #3 VOP_LOCK+0xa6 sys/kern/vfs_vops.c:524 #4 ufs_ihashins+0x4f sys/ufs/ufs/ufs_ihash.c:169 #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:3099 #10 syscall+0xaf8 mi_syscall sys/sys/syscall_mi.h:178 [inline] #10 syscall+0xaf8 sys/arch/amd64/amd64/trap.c:577 #11 Xsyscall+0x128 exclusive rrwlock inode r = 0 (0xfffffd806cd7c2c8) #0 witness_lock+0x5bb stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5bb sys/kern/subr_witness.c:1155 #1 rw_enter+0x41b sys/kern/kern_rwlock.c:309 #2 rrw_enter+0xbe sys/kern/kern_rwlock.c:464 #3 VOP_LOCK+0xa6 sys/kern/vfs_vops.c:524 #4 vn_lock+0xa4 sys/kern/vfs_vnops.c:564 #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:3084 #8 syscall+0xaf8 mi_syscall sys/sys/syscall_mi.h:178 [inline] #8 syscall+0xaf8 sys/arch/amd64/amd64/trap.c:577 #9 Xsyscall+0x128 ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10212 11267K 11578K 166960K 12676 0 pcb 17 18K 20K 166960K 252 0 rtable 257 8K 8K 166960K 448 0 pf 35 17K 21K 166960K 73 0 ifaddr 43 7K 8K 166960K 59 0 ifgroup 55 2K 2K 166960K 77 0 sysctl 3 0K 0K 166960K 3 0 counters 64 36K 36K 166960K 78 0 ioctlops 0 0K 4K 166960K 1523 0 iov 0 0K 28K 166960K 80 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1457 92K 92K 166960K 2083 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 5K 166960K 10 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 0K 166960K 24 0 dirhash 12 2K 2K 166960K 21 0 ACPI 1690 195K 286K 166960K 12468 0 file desc 17 61K 89K 166960K 781 0 sigio 0 0K 0K 166960K 12 0 proc 77 103K 128K 166960K 604 0 subproc 104 6K 6K 166960K 104 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 110 0 in_multi 99 7K 7K 166960K 138 0 ether_multi 1 0K 0K 166960K 3 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 85 387K 387K 166960K 85 0 exec 0 0K 1K 166960K 576 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 247 73K 74K 166960K 9099 0 UVM aobj 18 6K 6K 166960K 19 0 pinsyscall 42 84K 102K 166960K 1869 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 28 0 NDP 12 0K 1K 166960K 40 0 temp 59 6823K 6891K 166960K 29706 0 kqueue 13 20K 30K 166960K 134 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 24 0 0 1 0 1 1 0 8 0 rtpcb 120 77 0 74 1 0 1 1 0 8 0 rtentry 112 143 0 25 4 0 4 4 0 8 0 unpcb 144 379 0 361 4 1 3 4 0 8 2 syncache 336 6 0 6 3 2 1 1 0 8 1 tcpqe 32 1 0 1 1 1 0 1 0 8 0 tcpcb 808 363 0 358 14 5 9 11 0 8 8 arp 120 23 0 4 1 0 1 1 0 8 0 ipq 40 1 0 1 1 1 0 1 0 8 0 ipqe 40 3 0 3 1 1 0 1 0 8 0 inpcb 336 1228 0 1219 13 4 9 10 0 8 8 nd6 136 36 0 5 2 0 2 2 0 8 0 pkpcb 40 138 0 138 2 0 2 2 0 8 2 kcovpl 48 8 0 0 1 0 1 1 0 8 0 ppxss 1168 4 0 4 1 0 1 1 0 8 1 pffrag 232 20 0 17 1 0 1 1 0 482 0 pffrnode 88 20 0 17 1 0 1 1 0 8 0 pffrent 40 38 0 35 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 pfanchor 1288 3 0 1 1 0 1 1 0 8 0 pfstitem 24 65 0 3 1 0 1 1 0 8 0 pfstkey 128 66 0 4 2 0 2 2 0 8 0 pfstate 376 66 0 4 7 0 7 7 0 8 0 pfrule 1344 25 0 19 2 0 2 2 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 660 0 93 37 0 37 37 0 8 0 art_table 32 661 0 93 5 0 5 5 0 8 0 art_node 16 138 0 32 1 0 1 1 0 8 0 sysvmsgpl 40 40 0 0 1 0 1 1 0 8 0 semupl 112 2 0 2 1 0 1 1 0 8 1 semapl 112 17 0 7 1 0 1 1 0 8 0 shmpl 112 16 0 1 1 0 1 1 0 8 0 dirhash 1024 23 0 6 3 0 3 3 0 8 0 dino2pl 256 2769 0 1267 95 0 95 95 0 8 0 ffsino 272 2769 0 1267 101 0 101 101 0 8 0 nchpl 144 3886 0 2195 63 0 63 63 0 8 0 uvmvnodes 80 3324 0 0 68 0 68 68 0 8 0 vnodes 216 3324 0 0 185 0 185 185 0 8 0 namei 1024 13333 0 13331 3 2 1 2 0 8 0 percpumem 16 53 0 7 1 0 1 1 0 8 0 kstatmem 264 38 0 14 2 0 2 2 0 8 0 scsiplug 72 5 0 5 1 0 1 1 0 8 1 scxspl 216 11350 0 11349 10 8 2 8 1 8 1 plimitpl 152 172 0 154 1 0 1 1 0 8 0 sigapl 424 1106 0 1036 10 1 9 9 0 8 0 futexpl 64 9998 0 9994 1 0 1 1 0 8 0 knotepl 120 342 0 0 11 0 11 11 0 8 0 kqueuepl 216 178 0 169 1 0 1 1 0 8 0 pipepl 320 299 0 272 4 1 3 4 0 8 0 fdescpl 496 1065 0 1034 5 0 5 5 0 8 0 filepl 152 6851 0 6596 16 0 16 16 0 8 4 lockfpl 104 218 0 216 1 0 1 1 0 8 0 lockfspl 48 92 0 90 1 0 1 1 0 8 0 sessionpl 144 26 0 17 1 0 1 1 0 8 0 pgrppl 48 44 0 27 1 0 1 1 0 8 0 ucredpl 104 989 0 976 1 0 1 1 0 8 0 zombiepl 144 1038 0 1036 1 0 1 1 0 8 0 processpl 1160 1106 0 1036 6 0 6 6 0 8 0 procpl 648 2215 0 2135 9 1 8 8 0 8 0 srpgc 96 1 0 1 1 1 0 1 0 8 0 sosppl 168 4 0 4 2 1 1 1 0 8 1 sockpl 664 1835 0 1805 14 2 12 14 0 8 8 mcl64k 65536 4 0 0 1 0 1 1 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 mcl8k 8192 5 0 0 1 0 1 1 0 8 0 mcl4k 4096 150 0 0 19 0 19 19 0 8 0 mcl2k 2048 21 0 0 3 0 3 3 0 8 0 mtagpl 96 61 0 0 2 0 2 2 0 8 0 mbufpl 256 345 0 0 22 0 22 22 0 8 0 bufpl 280 4484 0 104 313 0 313 313 0 8 0 anonpl 24 223309 0 219559 57 5 52 54 0 185 18 amapchunkpl 152 29760 0 29222 28 0 28 28 0 158 4 amappl16 200 5692 0 5660 29 15 14 19 0 8 8 amappl15 192 11 0 11 1 1 0 1 0 8 0 amappl14 184 121 0 109 1 0 1 1 0 8 0 amappl13 176 15 0 15 2 2 0 1 0 8 0 amappl12 168 1711 0 1680 3 1 2 2 0 8 0 amappl11 160 96 0 82 1 0 1 1 0 8 0 amappl10 152 14 0 13 1 0 1 1 0 8 0 amappl9 144 138 0 138 1 1 0 1 0 8 0 amappl8 136 54 0 51 1 0 1 1 0 8 0 amappl7 128 114 0 102 1 0 1 1 0 8 0 amappl6 120 166 0 164 1 0 1 1 0 8 0 amappl5 112 142 0 131 1 0 1 1 0 8 0 amappl4 104 321 0 303 1 0 1 1 0 8 0 amappl3 96 5458 0 5355 3 0 3 3 0 8 0 amappl2 88 1366 0 1279 3 0 3 3 0 8 0 amappl1 80 10269 0 9695 14 0 14 14 0 8 0 amappl 88 8669 0 8484 5 0 5 5 0 92 0 dma32768 32768 1 0 1 1 0 1 1 0 8 1 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 128 255 0 255 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 18 0 17 1 0 1 1 0 8 0 aobjpl 72 18 0 1 1 0 1 1 0 8 0 uaddrrnd 24 1066 0 1035 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 1066 0 1035 1 0 1 1 0 8 0 vmmpekpl 168 10238 0 10202 2 0 2 2 0 8 0 vmmpepl 168 73415 0 71519 95 0 95 95 0 357 5 vmsppl 448 1065 0 1035 6 2 4 5 0 8 0 rwobjpl 56 27070 0 22766 63 0 63 63 0 8 2 pdppl 4096 2139 0 2070 105 34 71 83 0 8 2 pvpl 32 14911 0 0 122 1 121 121 0 265 0 pmappl 248 1065 0 1035 3 0 3 3 0 8 0 extentpl 40 55 0 38 1 0 1 1 0 8 0 phpool 112 433 0 51 11 0 11 11 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:437 witness_checkorder(fffffd8064ab65f0,9,0) at witness_checkorder+0x1047 rw_enter(fffffd8064ab65e0,1) at rw_enter+0x122 rrw_enter(fffffd8064ab65e0,1) at rrw_enter+0xbe sys/kern/kern_rwlock.c:464 VOP_LOCK(fffffd806a1f6298,2001) at VOP_LOCK+0xa6 sys/kern/vfs_vops.c:524 vn_lock(fffffd806a1f6298,2001) at vn_lock+0xa4 sys/kern/vfs_vnops.c:564 vfs_lookup(ffff8000359b1718) at vfs_lookup+0x109 sys/kern/vfs_lookup.c:418 namei(ffff8000359b1718) at namei+0x7aa sys/kern/vfs_lookup.c:250 unp_connect(ffff8000012eaa78,fffffd805f2c4400,ffff80002a0e8548) at unp_connect+0x27d sys/kern/uipc_usrreq.c:868 uipc_dgram_send(ffff8000012eaa78,fffffd806ce97400,fffffd805f2c4400,0) at uipc_dgram_send+0x131 sys/kern/uipc_usrreq.c:607 sosend(ffff8000012eaa78,fffffd805f2c4400,ffff8000359b19a8,0,0,0) at sosend+0xa40 sendit(ffff80002a0e8548,4,ffff8000359b1b20,0,ffff8000359b1be0) at sendit+0x721 sys/kern/uipc_syscalls.c:786 sys_sendmsg(ffff80002a0e8548,ffff8000359b1c90,ffff8000359b1be0) at sys_sendmsg+0x246 sys/kern/uipc_syscalls.c:604 syscall(ffff8000359b1c90) at syscall+0xbb6 mi_syscall sys/sys/syscall_mi.h:178 [inline] syscall(ffff8000359b1c90) at syscall+0xbb6 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x4de6c046fe0, count: -15 ddb{0}> machine ddbcpu 1 Stopped at x86_ipi_db+0x27: addq $0x8,%rsp ddb{1}> trace x86_ipi_db(ffff800029b7bff0) 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(ffffffff8359d330) at __mp_lock+0x1a3 __mp_lock_spin sys/kern/kern_lock.c:113 [inline] __mp_lock(ffffffff8359d330) at __mp_lock+0x1a3 sys/kern/kern_lock.c:144 syscall(ffff80003727f0b0) at syscall+0xad6 mi_syscall sys/sys/syscall_mi.h:178 [inline] syscall(ffff80003727f0b0) at syscall+0xad6 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7b122ba0ecc0, count: -6