d3G`BljF-E 7_9X"xL~n=@9V'&&Z(rLdI`6<'azˆ˵ݻk-bi(#h'|,еU)Ėv+j3`Ny1n73쥬vtmJ0.{kJ|%cws$:@'GM>^K"E!^ݦA@dWs Ľ^ade* TвjLNz;s;Pd]<0u4cx%بQP]Wa 1hHwitness: lock order reversal: 1st 0xffff800001303bd8 sbufsnd (&so->so_snd.sb_lock) 2nd 0xfffffd8062c41c50 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{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(fffffd8062c41c50,9,0) at witness_checkorder+0x1047 rw_enter(fffffd8062c41c40,1) at rw_enter+0x122 rrw_enter(fffffd8062c41c40,1) at rrw_enter+0xbe sys/kern/kern_rwlock.c:464 VOP_LOCK(fffffd80609095f8,2001) at VOP_LOCK+0xa6 sys/kern/vfs_vops.c:524 vn_lock(fffffd80609095f8,2001) at vn_lock+0xa4 sys/kern/vfs_vnops.c:564 vfs_lookup(ffff80003358bac8) at vfs_lookup+0x109 sys/kern/vfs_lookup.c:418 namei(ffff80003358bac8) at namei+0x7aa sys/kern/vfs_lookup.c:250 unp_connect(ffff800001303a30,fffffd8076c7a500,ffff800037262ce0) at unp_connect+0x27d sys/kern/uipc_usrreq.c:868 uipc_dgram_send(ffff800001303a30,fffffd806c008400,fffffd8076c7a500,0) at uipc_dgram_send+0x131 sys/kern/uipc_usrreq.c:607 sosend(ffff800001303a30,fffffd8076c7a500,ffff80003358bd58,0,0,0) at sosend+0xa40 sendit(ffff800037262ce0,5,ffff80003358bed0,0,ffff80003358bf90) at sendit+0x721 sys/kern/uipc_syscalls.c:786 sys_sendmsg(ffff800037262ce0,ffff80003358c040,ffff80003358bf90) at sys_sendmsg+0x246 sys/kern/uipc_syscalls.c:604 syscall(ffff80003358c040) at syscall+0xbb6 mi_syscall sys/sys/syscall_mi.h:178 [inline] syscall(ffff80003358c040) at syscall+0xbb6 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xb7670bc3ba0, count: -15 ddb{1}> show registers rdi 0 rsi 0x40000 acpi_pdirpa+0x2be71 rbp 0xffff80003358b720 rbx 0xfffffd80042c2580 rdx 0xffff800001290680 rcx 0xffff800037262ce0 rax 0x3ffff acpi_pdirpa+0x2be70 r8 0xffff80003358b600 r9 0x8080808080808080 r10 0x9b9b8ced1fef2192 r11 0x2effaeb6183ebcfe r12 0 r13 0xfffffd8003adae00 r14 0x3 r15 0xffffffff rip 0xffffffff81610e15 db_enter+0x25 cs 0x8 rflags 0x246 rsp 0xffff80003358b710 ss 0x10 db_enter+0x25: addq $0x8,%rsp ddb{1}> show proc PROC (syz-executor) tid=53154 pid=92726 tcnt=2 stat=onproc flags process=10 proc=4000000 runpri=32, usrpri=50, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff800037263700,0xffffffff835f1e20 process=0xffff800037264008 user=0xffff800033587000, vmspace=0xfffffd8065232c60 estcpu=36, cpticks=0, pctcpu=0.0, user=0, sys=0, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 92726 497076 68317 0 2 0x10 syz-executor *92726 53154 68317 0 7 0x4000010 syz-executor 52172 274902 80293 0 3 0x80 nanoslp syz-executor 52172 489861 80293 0 3 0x4000080 sbwait syz-executor 52172 167015 80293 0 3 0x4000080 kqsel syz-executor 52172 28335 80293 0 3 0x4000080 fsleep syz-executor 66868 145401 96789 0 3 0x80 nanoslp syz-executor 66868 316388 96789 0 3 0x4000080 msgwait syz-executor 66868 290080 96789 0 3 0x4000080 fsleep syz-executor 99083 370949 89933 0 3 0x80 nanoslp syz-executor 99083 37506 89933 0 3 0x4000080 kqread syz-executor 99083 194195 89933 0 3 0x4000080 fsleep syz-executor 29162 132012 0 0 3 0x14280 nfsidl nfsio 59855 460744 0 0 3 0x14280 nfsidl nfsio 84752 17477 0 0 3 0x14280 nfsidl nfsio 77588 346512 0 0 3 0x14280 nfsidl nfsio 34121 511494 0 0 3 0x14280 nfsidl nfsio 56069 338063 0 0 3 0x14280 nfsidl nfsio 41418 523115 0 0 3 0x14280 nfsidl nfsio 69563 279385 0 0 3 0x14280 nfsidl nfsio 53307 45396 0 0 3 0x14280 nfsidl nfsio 82087 162784 0 0 3 0x14280 nfsidl nfsio 10317 362321 0 0 3 0x14280 nfsidl nfsio 84025 214160 0 0 3 0x14280 nfsidl nfsio 91518 438054 0 0 3 0x14280 nfsidl nfsio 95342 71383 0 0 3 0x14280 nfsidl nfsio 57859 331566 0 0 3 0x14280 nfsidl nfsio 95309 86472 0 0 3 0x14280 nfsidl nfsio 74399 179478 0 0 3 0x14280 nfsidl nfsio 11150 266056 0 0 3 0x14280 nfsidl nfsio 50601 433143 0 0 3 0x14280 nfsidl nfsio 82588 497729 0 0 3 0x14280 nfsidl nfsio 41376 451980 1 0 3 0x100083 ttyin getty 37498 417540 0 0 3 0x14200 acct acct 74023 116056 0 0 3 0x14200 bored sosplice 13641 480716 53377 0 3 0x2 biowait syz-executor 80293 33530 53377 0 3 0x82 nanoslp syz-executor 68317 159141 53377 0 3 0x82 nanoslp syz-executor 89933 46577 53377 0 3 0x82 nanoslp syz-executor 96789 348123 53377 0 3 0x82 nanoslp syz-executor 98169 443874 53377 0 3 0x82 wait syz-executor 29836 159215 53377 0 3 0x82 nanoslp syz-executor 43081 399360 53377 0 7 0x2 syz-executor 53377 218945 5513 0 3 0x82 kqread syz-executor 5513 441651 86897 0 3 0x10008a sigsusp ksh 86897 264162 98091 0 3 0x98 kqread sshd-session 98091 150860 50287 0 3 0x92 kqread sshd-session 50287 82336 1 0 3 0x88 kqread sshd 90691 356223 81373 74 3 0x1100092 bpf pflogd 81373 488571 1 0 3 0x80 sbwait pflogd 44265 64685 84219 73 3 0x1100090 kqread syslogd 84219 145182 1 0 3 0x100082 sbwait syslogd 54997 253807 1 0 3 0x100080 kqread resolvd 82428 52779 89255 77 3 0x100092 kqread dhcpleased 24882 385156 89255 77 3 0x100092 kqread dhcpleased 89255 3503 1 0 3 0x80 kqread dhcpleased 13983 189596 0 0 3 0x14200 bored smr 86722 15410 0 0 3 0x14200 pgzero zerothread 57375 448533 0 0 3 0x14200 aiodoned aiodoned 50826 136418 0 0 3 0x14200 syncer update 40961 101821 0 0 3 0x14200 cleaner cleaner 59049 143006 0 0 3 0x14200 reaper reaper 17386 178153 0 0 3 0x14200 pgdaemon pagedaemon 50016 232537 0 0 3 0x14200 bored viomb 9186 389875 0 0 3 0x40014200 acpi0 acpi0 95229 469776 0 0 3 0x40014200 idle1 76599 175762 0 0 3 0x14200 bored softnet3 58806 92966 0 0 3 0x14200 bored softnet2 34072 50071 0 0 3 0x14200 bored softnet1 73091 418451 0 0 3 0x14200 bored softnet0 32127 60716 0 0 3 0x14200 bored systqmp 76871 238598 0 0 3 0x14200 bored systq 17406 203339 0 0 3 0x14200 tmoslp softclockmp 74233 381809 0 0 3 0x40014200 tmoslp softclock 43518 429544 0 0 3 0x40014200 idle0 1 13670 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{1}> show all locks Process 92726 (syz-executor) thread 0xffff800037262ce0 (53154) 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 (0xffff800001303bd8) #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 13641 (syz-executor) thread 0xffff800029fd96d0 (480716) exclusive rrwlock inode r = 0 (0xfffffd806f46a708) #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 (0xfffffd806c7d21a8) #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{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10226 11147K 11547K 166960K 12483 0 pcb 18 13K 13K 166960K 107 0 rtable 178 5K 7K 166960K 425 0 pf 39 18K 18K 166960K 65 0 ifaddr 38 6K 7K 166960K 59 0 ifgroup 60 2K 2K 166960K 82 0 sysctl 2 0K 0K 166960K 2 0 counters 66 36K 36K 166960K 78 0 ioctlops 0 0K 4K 166960K 1596 0 iov 0 0K 12K 166960K 34 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1427 90K 90K 166960K 1902 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 5K 166960K 9 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 0K 166960K 89 0 dirhash 12 2K 2K 166960K 36 0 ACPI 1690 195K 286K 166960K 12468 0 file desc 16 57K 93K 166960K 703 0 sigio 0 0K 0K 166960K 10 0 proc 72 91K 128K 166960K 593 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 90 0 in_multi 76 5K 7K 166960K 121 0 ether_multi 1 0K 0K 166960K 3 0 mrt 0 0K 0K 166960K 1 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 235 1049K 1049K 166960K 235 0 exec 0 0K 1K 166960K 439 0 fusefs mount 1 32K 32K 166960K 1 0 pfkey data 0 0K 0K 166960K 3 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 244 77K 78K 166960K 8411 0 UVM aobj 23 6K 6K 166960K 25 0 pinsyscall 41 82K 108K 166960K 1791 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 40 0 NDP 13 0K 2K 166960K 38 0 temp 54 6822K 6893K 166960K 31598 0 kqueue 15 24K 32K 166960K 132 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 63 0 60 1 0 1 1 0 8 0 rtentry 112 130 0 51 4 0 4 4 0 8 0 unpcb 144 620 0 598 6 0 6 6 0 8 5 syncache 336 6 0 6 4 3 1 1 0 8 1 tcpqe 32 1 0 1 1 1 0 1 0 8 0 tcpcb 808 157 0 152 3 1 2 2 0 8 1 arp 120 23 0 9 1 0 1 1 0 8 0 inpcb 336 761 0 751 7 0 7 7 0 8 5 nd6 136 26 0 6 1 0 1 1 0 8 0 pkpcb 40 4 0 3 2 1 1 1 0 8 0 kcovpl 48 8 0 0 1 0 1 1 0 8 0 ppxss 1168 3 0 3 1 0 1 1 0 8 1 pffrag 232 20 0 16 1 0 1 1 0 482 0 pffrnode 88 20 0 16 1 0 1 1 0 8 0 pffrent 40 38 0 34 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 pfstitem 24 53 0 2 1 0 1 1 0 8 0 pfstkey 128 53 0 2 2 0 2 2 0 8 0 pfstate 376 52 0 2 5 0 5 5 0 8 0 pfrule 1344 21 0 15 2 0 2 2 0 8 0 art_heap8 4096 2 0 0 2 0 2 2 0 8 0 art_heap4 256 563 0 177 31 2 29 29 0 8 2 art_table 32 565 0 177 4 0 4 4 0 8 0 art_node 16 128 0 60 1 0 1 1 0 8 0 sysvmsgpl 40 13 0 8 2 1 1 1 0 8 0 semapl 112 85 0 75 1 0 1 1 0 8 0 shmpl 112 22 0 2 1 0 1 1 0 8 0 dirhash 1024 33 0 16 3 0 3 3 0 8 0 dino2pl 256 2638 0 1135 95 0 95 95 0 8 0 ffsino 272 2638 0 1135 101 0 101 101 0 8 0 nchpl 144 3635 0 1947 63 0 63 63 0 8 0 uvmvnodes 80 3088 0 0 64 0 64 64 0 8 0 vnodes 216 3088 0 0 172 0 172 172 0 8 0 namei 1024 12730 0 12728 4 3 1 2 0 8 0 percpumem 16 53 0 6 1 0 1 1 0 8 0 kstatmem 264 38 0 12 2 0 2 2 0 8 0 scsiplug 72 3 0 3 1 1 0 1 0 8 0 scxspl 216 11901 0 11900 17 9 8 8 1 8 7 plimitpl 152 201 0 184 1 0 1 1 0 8 0 sigapl 424 1027 0 957 9 0 9 9 0 8 0 futexpl 64 9027 0 9024 1 0 1 1 0 8 0 knotepl 120 781 0 0 24 0 24 24 0 8 0 kqueuepl 216 184 0 173 1 0 1 1 0 8 0 pipepl 320 231 0 204 8 5 3 8 0 8 0 fdescpl 496 987 0 957 5 0 5 5 0 8 0 filepl 152 6115 0 5855 22 4 18 18 0 8 6 lockfpl 104 293 0 290 1 0 1 1 0 8 0 lockfspl 48 125 0 122 1 0 1 1 0 8 0 sessionpl 144 26 0 17 1 0 1 1 0 8 0 pgrppl 48 39 0 22 1 0 1 1 0 8 0 ucredpl 104 808 0 793 1 0 1 1 0 8 0 zombiepl 144 959 0 957 1 0 1 1 0 8 0 processpl 1160 1027 0 957 7 1 6 6 0 8 0 procpl 648 2034 0 1956 8 0 8 8 0 8 0 srpgc 96 4 0 4 2 1 1 1 0 8 1 sosppl 168 2 0 2 2 1 1 1 0 8 1 sockpl 664 1455 0 1419 18 5 13 18 0 8 9 mcl64k 65536 2 0 0 1 0 1 1 0 8 0 mcl12k 12288 1 0 0 1 0 1 1 0 8 0 mcl8k 8192 4 0 0 1 0 1 1 0 8 0 mcl4k 4096 116 0 0 15 0 15 15 0 8 0 mcl2k 2048 19 0 0 3 0 3 3 0 8 0 mtagpl 96 29 0 0 1 0 1 1 0 8 0 mbufpl 256 169 0 0 11 0 11 11 0 8 0 bufpl 280 4328 0 96 303 0 303 303 0 8 0 anonpl 24 256198 0 252578 69 22 47 47 0 185 18 amapchunkpl 152 27967 0 27436 29 0 29 29 0 158 5 amappl16 200 7601 0 7572 34 23 11 15 0 8 8 amappl15 192 11 0 11 1 1 0 1 0 8 0 amappl14 184 192 0 180 1 0 1 1 0 8 0 amappl13 176 13 0 13 1 1 0 1 0 8 0 amappl12 168 1635 0 1605 3 1 2 2 0 8 0 amappl11 160 62 0 48 1 0 1 1 0 8 0 amappl10 152 17 0 17 1 1 0 1 0 8 0 amappl9 144 156 0 156 1 1 0 1 0 8 0 amappl8 136 32 0 29 1 0 1 1 0 8 0 amappl7 128 119 0 107 1 0 1 1 0 8 0 amappl6 120 166 0 164 1 0 1 1 0 8 0 amappl5 112 150 0 138 1 0 1 1 0 8 0 amappl4 104 319 0 300 1 0 1 1 0 8 0 amappl3 96 5066 0 4963 4 0 4 4 0 8 0 amappl2 88 1285 0 1201 3 0 3 3 0 8 0 amappl1 80 9927 0 9365 15 0 15 15 0 8 0 amappl 88 7975 0 7793 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 128 257 0 257 3 2 1 1 0 8 1 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 22 0 21 1 0 1 1 0 8 0 aobjpl 72 24 0 2 1 0 1 1 0 8 0 uaddrrnd 24 987 0 957 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 987 0 957 1 0 1 1 0 8 0 vmmpekpl 168 9769 0 9725 3 0 3 3 0 8 0 vmmpepl 168 71155 0 69315 100 5 95 95 0 357 6 vmsppl 448 986 0 957 6 2 4 5 0 8 0 rwobjpl 56 28077 0 24015 58 0 58 58 0 8 0 pdppl 4096 1981 0 1914 109 36 73 85 0 8 6 pvpl 32 14556 0 0 119 1 118 118 0 265 0 pmappl 248 986 0 957 3 0 3 3 0 8 0 extentpl 40 55 0 38 1 0 1 1 0 8 0 phpool 112 401 0 49 11 0 11 11 0 8 0 ddb{1}> machine ddbcpu 0 Stopped at x86_ipi_db+0x27: addq $0x8,%rsp ddb{0}> trace x86_ipi_db(ffffffff8349fff0) 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+0x192 __mp_lock_spin sys/kern/kern_lock.c:113 [inline] __mp_lock(ffffffff8359d330) at __mp_lock+0x192 sys/kern/kern_lock.c:144 intr_handler(ffff80002a09c520,ffff800000069c00) at intr_handler+0xe1 sys/arch/amd64/amd64/intr.c:553 Xintr_ioapic_edge16_untramp() at Xintr_ioapic_edge16_untramp+0x18f __mp_lock(ffffffff8359d330) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:113 [inline] __mp_lock(ffffffff8359d330) at __mp_lock+0x192 sys/kern/kern_lock.c:144 syscall(ffff80002a09c6f0) at syscall+0xad6 mi_syscall sys/sys/syscall_mi.h:178 [inline] syscall(ffff80002a09c6f0) at syscall+0xad6 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x78cfae093390, count: -9 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(fffffd8062c41c50,9,0) at witness_checkorder+0x1047 rw_enter(fffffd8062c41c40,1) at rw_enter+0x122 rrw_enter(fffffd8062c41c40,1) at rrw_enter+0xbe sys/kern/kern_rwlock.c:464 VOP_LOCK(fffffd80609095f8,2001) at VOP_LOCK+0xa6 sys/kern/vfs_vops.c:524 vn_lock(fffffd80609095f8,2001) at vn_lock+0xa4 sys/kern/vfs_vnops.c:564 vfs_lookup(ffff80003358bac8) at vfs_lookup+0x109 sys/kern/vfs_lookup.c:418 namei(ffff80003358bac8) at namei+0x7aa sys/kern/vfs_lookup.c:250 unp_connect(ffff800001303a30,fffffd8076c7a500,ffff800037262ce0) at unp_connect+0x27d sys/kern/uipc_usrreq.c:868 uipc_dgram_send(ffff800001303a30,fffffd806c008400,fffffd8076c7a500,0) at uipc_dgram_send+0x131 sys/kern/uipc_usrreq.c:607 sosend(ffff800001303a30,fffffd8076c7a500,ffff80003358bd58,0,0,0) at sosend+0xa40 sendit(ffff800037262ce0,5,ffff80003358bed0,0,ffff80003358bf90) at sendit+0x721 sys/kern/uipc_syscalls.c:786 sys_sendmsg(ffff800037262ce0,ffff80003358c040,ffff80003358bf90) at sys_sendmsg+0x246 sys/kern/uipc_syscalls.c:604 syscall(ffff80003358c040) at syscall+0xbb6 mi_syscall sys/sys/syscall_mi.h:178 [inline] syscall(ffff80003358c040) at syscall+0xbb6 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xb7670bc3ba0, count: -15