witness: lock order reversal: 1st 0xffffffff8277e670 netlock (netlock) 2nd 0xfffffd806e2de4d8 inode (&ip->i_lock) lock order "&ip->i_lock"(rrwlock) -> "netlock"(rwlock) first seen at: #0 witness_checkorder+0x65e witness_lock_order_add sys/kern/subr_witness.c:2463 [inline] #0 witness_checkorder+0x65e sys/kern/subr_witness.c:880 #1 rw_enter_write+0x5b sys/kern/kern_rwlock.c:127 #2 uvn_get+0xeb uvm_vnode_lock sys/uvm/uvm_vnode.c:1501 [inline] #2 uvn_get+0xeb sys/uvm/uvm_vnode.c:993 #3 uvm_fault+0xa41 sys/uvm/uvm_fault.c:1073 #4 kpageflttrap+0x202 sys/arch/amd64/amd64/trap.c:265 #5 kerntrap+0xef sys/arch/amd64/amd64/trap.c:321 #6 alltraps_kern_meltdown+0x7b #7 copyin+0x53 #8 sys_connect+0x9b sys/kern/uipc_syscalls.c:362 #9 syscall+0x4a1 mi_syscall sys/sys/syscall_mi.h:102 [inline] #9 syscall+0x4a1 sys/arch/amd64/amd64/trap.c:590 #10 Xsyscall+0x128 lock order "netlock"(rwlock) -> "&ip->i_lock"(rrwlock) first seen at: #0 witness_checkorder+0x65e witness_lock_order_add sys/kern/subr_witness.c:2463 [inline] #0 witness_checkorder+0x65e sys/kern/subr_witness.c:880 #1 rw_enter+0xd4 #2 rrw_enter+0x88 sys/kern/kern_rwlock.c:462 #3 VOP_LOCK+0x4b sys/kern/vfs_vops.c:614 #4 vn_lock+0x6c sys/kern/vfs_vnops.c:575 #5 vget+0x1c6 sys/kern/vfs_subr.c:671 #6 ktrwriteraw+0x138 sys/kern/kern_ktrace.c:659 #7 ktrstruct+0x169 ktrwrite2 sys/kern/kern_ktrace.c:627 [inline] #7 ktrstruct+0x169 sys/kern/kern_ktrace.c:311 #8 sys_connect+0x246 #9 syscall+0x4a1 mi_syscall sys/sys/syscall_mi.h:102 [inline] #9 syscall+0x4a1 sys/arch/amd64/amd64/trap.c:590 #10 Xsyscall+0x128 Stopped at db_enter+0x18: 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+0x18 sys/arch/amd64/amd64/db_interface.c:398 witness_checkorder(fffffd806e2de4d8,9,0) at witness_checkorder+0xf5a witness_debugger sys/kern/subr_witness.c:2490 [inline] witness_checkorder(fffffd806e2de4d8,9,0) at witness_checkorder+0xf5a sys/kern/subr_witness.c:1087 rw_enter(fffffd806e2de4c8,1) at rw_enter+0xd4 rrw_enter(fffffd806e2de4c8,1) at rrw_enter+0x88 sys/kern/kern_rwlock.c:462 VOP_LOCK(fffffd8067b10eb0,2001) at VOP_LOCK+0x4b sys/kern/vfs_vops.c:614 vn_lock(fffffd8067b10eb0,2001) at vn_lock+0x6c sys/kern/vfs_vnops.c:575 vget(fffffd8067b10eb0,2001) at vget+0x1c6 sys/kern/vfs_subr.c:671 ktrwriteraw(ffff8000222de548,fffffd8067b10eb0,fffffd807f7b79c0,ffff8000234d1810,ffff8000234d17f0) at ktrwriteraw+0x138 sys/kern/kern_ktrace.c:659 ktrstruct(ffff8000222de548,ffffffff823afafa,fffffd806b597c20,10) at ktrstruct+0x169 ktrwrite2 sys/kern/kern_ktrace.c:627 [inline] ktrstruct(ffff8000222de548,ffffffff823afafa,fffffd806b597c20,10) at ktrstruct+0x169 sys/kern/kern_ktrace.c:311 sys_connect(ffff8000222de548,ffff8000234d1958,ffff8000234d19a0) at sys_connect+0x246 syscall(ffff8000234d1a20) at syscall+0x4a1 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff8000234d1a20) at syscall+0x4a1 sys/arch/amd64/amd64/trap.c:590 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x3bfbb5417a0, count: -12 ddb{0}> show registers rdi 0x3 rsi 0x40000 acpi_pdirpa+0x2be68 rbp 0xffff8000234d1420 rbx 0x3 rdx 0xffff800000ac1780 rcx 0x3 rax 0x3ffff acpi_pdirpa+0x2be67 r8 0xffffffff81e34c43 witness_checkorder+0xf33 r9 0x5 r10 0xce7a06dfe1ab36b2 r11 0x39cf1234e52bdda4 r12 0xffffffff82843080 w_lodata+0x464c0 r13 0 r14 0xffffffff82842000 w_lodata+0x45440 r15 0xfffffd8002c9b500 rip 0xffffffff82243a18 db_enter+0x18 cs 0x8 rflags 0x246 rsp 0xffff8000234d1410 ss 0x10 db_enter+0x18: addq $0x8,%rsp ddb{0}> show proc PROC (syz-executor.1) pid=137722 stat=onproc flags process=0 proc=4000001 pri=32, usrpri=86, nice=20 forw=0xffffffffffffffff, list=0xffff8000222dea68,0xffffffff828e9418 process=0xffff80002252d4b8 user=0xffff8000234cc000, vmspace=0xfffffd807eff9a10 estcpu=36, cpticks=1, pctcpu=0.0 user=0, sys=0, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 46478 252055 20088 0 7 0 syz-executor.1 *46478 137722 20088 0 7 0x4000001 syz-executor.1 7014 278118 7392 0 3 0x2 biowait syz-executor.0 54346 416163 0 0 3 0x14280 nfsidl nfsio 95755 282221 0 0 3 0x14280 nfsidl nfsio 93821 265416 0 0 3 0x14280 nfsidl nfsio 90622 77784 0 0 3 0x14280 nfsidl nfsio 70870 390264 0 0 3 0x14280 nfsidl nfsio 50879 370544 0 0 3 0x14280 nfsidl nfsio 32754 351607 0 0 3 0x14280 nfsidl nfsio 89220 521204 0 0 3 0x14280 nfsidl nfsio 78031 284302 0 0 3 0x14280 nfsidl nfsio 84111 328531 0 0 3 0x14280 nfsidl nfsio 92626 325879 0 0 3 0x14280 nfsidl nfsio 86186 506691 0 0 3 0x14280 nfsidl nfsio 68769 137478 0 0 3 0x14280 nfsidl nfsio 33386 382014 0 0 3 0x14280 nfsidl nfsio 25290 508380 0 0 3 0x14280 nfsidl nfsio 25798 443626 0 0 3 0x14280 nfsidl nfsio 84019 56516 0 0 3 0x14280 nfsidl nfsio 1513 507382 0 0 3 0x14280 nfsidl nfsio 61907 64314 0 0 3 0x14280 nfsidl nfsio 55486 289580 0 0 3 0x14280 nfsidl nfsio 96945 502656 0 0 3 0x14200 bored sosplice 20088 89958 7392 0 3 0x82 nanosleep syz-executor.1 7392 482997 40411 0 3 0x82 thrsleep syz-fuzzer 7392 187008 40411 0 3 0x4000082 nanosleep syz-fuzzer 7392 298656 40411 0 3 0x4000082 thrsleep syz-fuzzer 7392 143945 40411 0 3 0x4000082 kqread syz-fuzzer 7392 72279 40411 0 3 0x4000082 thrsleep syz-fuzzer 7392 396073 40411 0 3 0x4000082 thrsleep syz-fuzzer 7392 402978 40411 0 3 0x4000082 thrsleep syz-fuzzer 7392 401537 40411 0 3 0x4000082 nanosleep syz-fuzzer 40411 354056 11305 0 3 0x10008a pause ksh 11305 430897 88518 0 3 0x92 select sshd 29500 383871 1 0 3 0x100083 ttyin getty 88518 724 1 0 3 0x80 select sshd 57071 20297 87406 74 3 0x100092 bpf pflogd 87406 84046 1 0 3 0x80 netio pflogd 63708 372395 70386 73 3 0x100090 kqread syslogd 70386 102659 1 0 3 0x100082 netio syslogd 19992 239072 1 77 3 0x100090 poll dhclient 56392 492694 1 0 3 0x80 poll dhclient 22420 207423 0 0 3 0x14200 bored smr 10828 82000 0 0 3 0x14200 pgzero zerothread 92751 401883 0 0 3 0x14200 aiodoned aiodoned 39699 292783 0 0 3 0x14200 syncer update 95931 403831 0 0 3 0x14200 cleaner cleaner 86680 128700 0 0 3 0x14200 reaper reaper 29955 495247 0 0 3 0x14200 pgdaemon pagedaemon 49526 84807 0 0 3 0x14200 bored crynlk 16328 208980 0 0 3 0x14200 bored crypto 85558 416409 0 0 3 0x14200 bored viomb 66353 501771 0 0 3 0x40014200 acpi0 acpi0 20566 126751 0 0 3 0x40014200 idle1 22354 156529 0 0 3 0x14200 bored softnet 76008 150933 0 0 3 0x14200 bored systqmp 17980 314891 0 0 3 0x14200 bored systq 86765 260879 0 0 3 0x40014200 bored softclock 51477 79527 0 0 3 0x40014200 idle0 1 87728 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks Process 46478 (syz-executor.1) thread 0xffff8000222de548 (137722) exclusive rwlock netlock r = 0 (0xffffffff8277e670) #0 witness_lock+0x4b0 stacktrace_save sys/sys/stacktrace.h:36 [inline] #0 witness_lock+0x4b0 sys/kern/subr_witness.c:1164 #1 solock+0x5a sys/kern/uipc_socket2.c:282 #2 sys_connect+0x6a sys/kern/uipc_syscalls.c:357 #3 syscall+0x4a1 mi_syscall sys/sys/syscall_mi.h:102 [inline] #3 syscall+0x4a1 sys/arch/amd64/amd64/trap.c:590 #4 Xsyscall+0x128 exclusive kernel_lock &kernel_lock r = 1 (0xffffffff828cea78) #0 witness_lock+0x4b0 stacktrace_save sys/sys/stacktrace.h:36 [inline] #0 witness_lock+0x4b0 sys/kern/subr_witness.c:1164 #1 syscall+0x3fd mi_syscall sys/sys/syscall_mi.h:93 [inline] #1 syscall+0x3fd sys/arch/amd64/amd64/trap.c:590 #2 Xsyscall+0x128 Process 7014 (syz-executor.0) thread 0xffff8000222de7d8 (278118) exclusive rrwlock inode r = 0 (0xfffffd806e30e918) #0 witness_lock+0x4b0 stacktrace_save sys/sys/stacktrace.h:36 [inline] #0 witness_lock+0x4b0 sys/kern/subr_witness.c:1164 #1 rw_enter+0x446 sys/kern/kern_rwlock.c:311 #2 rrw_enter+0x88 sys/kern/kern_rwlock.c:462 #3 VOP_LOCK+0x4b sys/kern/vfs_vops.c:614 #4 vn_lock+0x6c sys/kern/vfs_vnops.c:575 #5 vget+0x1c6 sys/kern/vfs_subr.c:671 #6 ufs_ihashget+0x121 sys/ufs/ufs/ufs_ihash.c:119 #7 ffs_vget+0x6b sys/ufs/ffs/ffs_vfsops.c:1321 #8 ufs_lookup+0x151d sys/ufs/ufs/ufs_lookup.c:487 #9 VOP_LOOKUP+0x5b sys/kern/vfs_vops.c:90 #10 vfs_lookup+0x708 sys/kern/vfs_lookup.c:568 #11 namei+0x5f7 sys/kern/vfs_lookup.c:249 #12 dounlinkat+0x99 sys/kern/vfs_syscalls.c:1848 #13 syscall+0x4a1 mi_syscall sys/sys/syscall_mi.h:102 [inline] #13 syscall+0x4a1 sys/arch/amd64/amd64/trap.c:590 #14 Xsyscall+0x128 exclusive rrwlock inode r = 0 (0xfffffd806e30e6f8) #0 witness_lock+0x4b0 stacktrace_save sys/sys/stacktrace.h:36 [inline] #0 witness_lock+0x4b0 sys/kern/subr_witness.c:1164 #1 rw_enter+0x446 sys/kern/kern_rwlock.c:311 #2 rrw_enter+0x88 sys/kern/kern_rwlock.c:462 #3 VOP_LOCK+0x4b sys/kern/vfs_vops.c:614 #4 vn_lock+0x6c sys/kern/vfs_vnops.c:575 #5 vget+0x1c6 sys/kern/vfs_subr.c:671 #6 cache_lookup+0x2b4 sys/kern/vfs_cache.c:224 #7 ufs_lookup+0x1c0 sys/ufs/ufs/ufs_lookup.c:162 #8 VOP_LOOKUP+0x5b sys/kern/vfs_vops.c:90 #9 vfs_lookup+0x708 sys/kern/vfs_lookup.c:568 #10 namei+0x5f7 sys/kern/vfs_lookup.c:249 #11 dounlinkat+0x99 sys/kern/vfs_syscalls.c:1848 #12 syscall+0x4a1 mi_syscall sys/sys/syscall_mi.h:102 [inline] #12 syscall+0x4a1 sys/arch/amd64/amd64/trap.c:590 #13 Xsyscall+0x128 ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 9535 6433K 6940K 78643K 12139 0 pcb 13 8K 8K 78643K 94 0 rtable 100 3K 4K 78643K 493 0 ifaddr 74 14K 15K 78643K 178 0 sysctl 2 0K 0K 78643K 2 0 counters 43 33K 34K 78643K 79 0 ioctlops 0 0K 4K 78643K 1552 0 iov 0 0K 16K 78643K 92 0 mount 1 1K 1K 78643K 1 0 vnodes 1217 77K 77K 78643K 1707 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 5K 78643K 5 0 VM map 2 1K 1K 78643K 2 0 sem 12 0K 0K 78643K 30 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1825 197K 290K 78643K 13109 0 file desc 5 13K 25K 78643K 2120 0 sigio 0 0K 0K 78643K 13 0 proc 64 63K 95K 78643K 577 0 subproc 32 2K 2K 78643K 68 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 0 0K 0K 78643K 119 0 in_multi 29 1K 2K 78643K 166 0 ether_multi 1 0K 0K 78643K 28 0 mrt 0 0K 0K 78643K 9 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 49 228K 228K 78643K 49 0 exec 0 0K 2K 78643K 461 0 pfkey data 0 0K 0K 78643K 2 0 pagedep 1 8K 8K 78643K 1 0 inodedep 1 32K 32K 78643K 1 0 newblk 1 0K 0K 78643K 1 0 VM swap 7 26K 26K 78643K 7 0 UVM amap 188 79K 104K 78643K 5894 0 UVM aobj 27 7K 7K 78643K 33 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 57 0 NDP 14 0K 0K 78643K 51 0 temp 117 3963K 4027K 78643K 9716 0 kqueue 3 4K 12K 78643K 71 0 SYN cache 2 16K 16K 78643K 2 0 ddb{0}> show all pools Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle arp 64 10 0 4 1 0 1 1 0 8 0 plcache 128 20 0 0 1 0 1 1 0 8 0 rtpcb 120 83 0 81 1 0 1 1 0 8 0 rtentry 112 94 0 53 2 0 2 2 0 8 0 unpcb 120 446 0 436 1 0 1 1 0 8 0 syncache 296 12 0 12 5 4 1 1 0 8 1 tcpqe 32 1669 0 1669 2 2 0 1 0 8 0 tcpcb 736 241 0 236 4 2 2 2 0 8 1 inpcb 296 690 0 679 4 2 2 2 0 8 0 rttmr 72 3 0 3 2 1 1 1 0 8 1 nd6 48 23 0 19 1 0 1 1 0 8 0 pkpcb 40 6 0 6 2 2 0 1 0 8 0 kcovpl 48 4 0 2 1 0 1 1 0 8 0 ppxss 1128 4 0 4 1 1 0 1 0 8 0 pfstscr 40 4 0 3 1 0 1 1 0 8 0 pffrag 232 3 0 2 1 0 1 1 0 482 0 pffrnode 88 3 0 2 1 0 1 1 0 8 0 pffrent 40 91 0 90 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 2 0 2 1 1 0 1 0 8 0 pfstitem 24 45 0 24 1 0 1 1 0 8 0 pfstkey 112 47 0 26 1 0 1 1 0 8 0 pfstate 328 44 0 24 2 0 2 2 0 8 0 pfrule 1360 37 0 30 2 1 1 2 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 306 0 131 13 0 13 13 0 8 0 art_table 32 307 0 131 2 0 2 2 0 8 0 art_node 16 90 0 52 1 0 1 1 0 8 0 sysvmsgpl 40 8 0 3 1 0 1 1 0 8 0 semupl 112 4 0 4 2 2 0 1 0 8 0 semapl 112 28 0 18 1 0 1 1 0 8 0 shmpl 112 30 0 7 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 3805 0 2404 89 1 88 89 0 8 0 ffsino 272 3805 0 2404 95 1 94 94 0 8 0 nchpl 144 6360 0 4764 60 0 60 60 0 8 0 uvmvnodes 72 4219 0 0 77 0 77 77 0 8 0 vnodes 208 4219 0 0 223 0 223 223 0 8 0 namei 1024 15874 0 15874 3 2 1 1 0 8 1 percpumem 16 50 0 18 1 0 1 1 0 8 0 vcpupl 1984 4 0 0 1 0 1 1 0 8 0 vmpool 560 7 0 3 1 0 1 1 0 8 0 scxspl 216 19220 0 19219 11 10 1 8 0 8 0 plimitpl 152 91 0 83 1 0 1 1 0 8 0 sigapl 424 2351 0 2298 7 0 7 7 0 8 0 futexpl 56 13907 0 13907 2 1 1 1 0 8 1 knotepl 112 164 0 144 1 0 1 1 0 8 0 kqueuepl 152 1653 0 1651 1 0 1 1 0 8 0 pipepl 304 172 0 161 7 5 2 4 0 8 1 fdescpl 496 2314 0 2298 3 0 3 3 0 8 0 filepl 152 8053 0 7947 8 3 5 7 0 8 0 lockfpl 104 139 0 138 1 0 1 1 0 8 0 lockfspl 48 51 0 50 1 0 1 1 0 8 0 sessionpl 144 20 0 9 1 0 1 1 0 8 0 pgrppl 48 32 0 21 1 0 1 1 0 8 0 ucredpl 96 807 0 798 1 0 1 1 0 8 0 zombiepl 144 2298 0 2298 2 1 1 1 0 8 1 processpl 1056 2351 0 2298 4 0 4 4 0 8 0 procpl 656 5137 0 5076 6 0 6 6 0 8 0 srpgc 96 2 0 2 1 1 0 1 0 8 0 sosppl 168 9 0 9 3 3 0 1 0 8 0 sockpl 400 1225 0 1202 8 5 3 4 0 8 0 mcl64k 65536 6 0 0 1 0 1 1 0 8 0 mcl16k 16384 6 0 0 1 0 1 1 0 8 0 mcl12k 12288 6 0 0 1 0 1 1 0 8 0 mcl9k 9216 5 0 0 1 0 1 1 0 8 0 mcl8k 8192 5 0 0 1 0 1 1 0 8 0 mcl4k 4096 8 0 0 1 0 1 1 0 8 0 mcl2k2 2112 1 0 0 1 0 1 1 0 8 0 mcl2k 2048 280 0 0 30 0 30 30 0 8 0 mtagpl 96 48 0 0 2 0 2 2 0 8 0 mbufpl 256 579 0 0 32 0 32 32 0 8 0 bufpl 280 6342 0 187 440 0 440 440 0 8 0 anonpl 16 197494 0 178438 94 4 90 93 0 124 12 amapchunkpl 152 10366 0 9970 31 1 30 30 0 158 14 amappl16 192 7215 0 6407 50 4 46 49 0 8 5 amappl15 184 283 0 282 1 0 1 1 0 8 0 amappl14 176 378 0 375 1 0 1 1 0 8 0 amappl13 168 515 0 513 1 0 1 1 0 8 0 amappl12 160 973 0 968 2 1 1 1 0 8 0 amappl11 152 59 0 43 1 0 1 1 0 8 0 amappl10 144 14 0 10 1 0 1 1 0 8 0 amappl9 136 360 0 359 2 1 1 1 0 8 0 amappl8 128 214 0 145 4 1 3 3 0 8 0 amappl7 120 268 0 261 1 0 1 1 0 8 0 amappl6 112 80 0 66 1 0 1 1 0 8 0 amappl5 104 2126 0 2105 1 0 1 1 0 8 0 amappl4 96 1619 0 1591 1 0 1 1 0 8 0 amappl3 88 649 0 642 1 0 1 1 0 8 0 amappl2 80 15811 0 15746 3 0 3 3 0 8 0 amappl1 72 78726 0 78239 26 15 11 19 0 8 1 amappl 80 5487 0 5387 3 0 3 3 0 84 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 7 0 7 1 1 0 1 0 8 0 dma16 16 18 0 17 1 0 1 1 0 8 0 aobjpl 64 32 0 6 1 0 1 1 0 8 0 uaddrrnd 24 2321 0 2301 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 2321 0 2301 1 0 1 1 0 8 0 vmmpekpl 168 15432 0 15391 2 0 2 2 0 8 0 vmmpepl 168 301423 0 299327 173 73 100 125 0 357 3 vmsppl 368 2320 0 2301 2 0 2 2 0 8 0 pdppl 4096 4649 0 4606 74 29 45 47 0 8 2 pvpl 32 780899 0 758576 226 12 214 217 0 265 30 pmappl 232 2320 0 2301 3 1 2 2 0 8 0 extentpl 40 57 0 39 1 0 1 1 0 8 0 phpool 112 363 0 43 10 0 10 10 0 8 0 ddb{0}> machine ddbcpu 0 Invalid cpu 0 ddb{0}> trace db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:398 witness_checkorder(fffffd806e2de4d8,9,0) at witness_checkorder+0xf5a witness_debugger sys/kern/subr_witness.c:2490 [inline] witness_checkorder(fffffd806e2de4d8,9,0) at witness_checkorder+0xf5a sys/kern/subr_witness.c:1087 rw_enter(fffffd806e2de4c8,1) at rw_enter+0xd4 rrw_enter(fffffd806e2de4c8,1) at rrw_enter+0x88 sys/kern/kern_rwlock.c:462 VOP_LOCK(fffffd8067b10eb0,2001) at VOP_LOCK+0x4b sys/kern/vfs_vops.c:614 vn_lock(fffffd8067b10eb0,2001) at vn_lock+0x6c sys/kern/vfs_vnops.c:575 vget(fffffd8067b10eb0,2001) at vget+0x1c6 sys/kern/vfs_subr.c:671 ktrwriteraw(ffff8000222de548,fffffd8067b10eb0,fffffd807f7b79c0,ffff8000234d1810,ffff8000234d17f0) at ktrwriteraw+0x138 sys/kern/kern_ktrace.c:659 ktrstruct(ffff8000222de548,ffffffff823afafa,fffffd806b597c20,10) at ktrstruct+0x169 ktrwrite2 sys/kern/kern_ktrace.c:627 [inline] ktrstruct(ffff8000222de548,ffffffff823afafa,fffffd806b597c20,10) at ktrstruct+0x169 sys/kern/kern_ktrace.c:311 sys_connect(ffff8000222de548,ffff8000234d1958,ffff8000234d19a0) at sys_connect+0x246 syscall(ffff8000234d1a20) at syscall+0x4a1 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff8000234d1a20) at syscall+0x4a1 sys/arch/amd64/amd64/trap.c:590 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x3bfbb5417a0, count: -12 ddb{0}> machine ddbcpu 1 Stopped at x86_ipi_db+0x1a: addq $0x8,%rsp ddb{1}> trace x86_ipi_db(ffff800020d68ff0) at x86_ipi_db+0x1a sys/arch/amd64/amd64/db_interface.c:352 x86_ipi_handler() at x86_ipi_handler+0xb7 sys/arch/amd64/amd64/ipi.c:106 Xresume_lapic_ipi() at Xresume_lapic_ipi+0x23 __mp_lock(ffffffff828ce870) at __mp_lock+0x122 __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff828ce870) at __mp_lock+0x122 sys/kern/kern_lock.c:147 syscall(ffff8000218adbf0) at syscall+0x3fd mi_syscall sys/sys/syscall_mi.h:93 [inline] syscall(ffff8000218adbf0) at syscall+0x3fd sys/arch/amd64/amd64/trap.c:590 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffbc6f0, count: -6