witness: lock order reversal: 1st 0xffff800010fcabe8 sbufrcv (&so->so_rcv.sb_lock) 2nd 0xfffffd8068280a78 inode (&ip->i_lock) lock order [1] sbufrcv (&so->so_rcv.sb_lock) -> [2] inode (&ip->i_lock) lock order data 0xffffffff834385bd -> 0xffffffff833a5512 is missing lock order [2] inode (&ip->i_lock) -> [1] 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 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(fffffd8068280a78,9,0) at witness_checkorder+0x1047 rw_do_enter_write(fffffd8068280a60,1) at rw_do_enter_write+0xb7 sys/kern/kern_rwlock.c:233 rrw_enter(fffffd8068280a60,1) at rrw_enter+0xc6 sys/kern/kern_rwlock.c:616 VOP_LOCK(fffffd80678409a8,2001) at VOP_LOCK+0xa6 sys/kern/vfs_vops.c:524 vn_lock(fffffd80678409a8,2001) at vn_lock+0xa4 sys/kern/vfs_vnops.c:570 vfs_getcwd_common(fffffd80678409a8,fffffd80678409a8,0,0,200,0,13b84f578efdbd99) at vfs_getcwd_common+0xd1 sys/kern/vfs_getcwd.c:287 vn_isunder(fffffd80678409a8,fffffd80678409a8,ffff8000ffffacf0) at vn_isunder+0x56 sys/kern/vfs_vnops.c:694 unp_externalize(fffffd806a6c2900,33,0) at unp_externalize+0x286 sys/kern/uipc_usrreq.c:1086 soreceive(ffff800010fcab08,ffff80003c4e5368,ffff80003c4e5318,0,ffff80003c4e5358,ffff80003c4e54dc,46d60b21026f73a) at soreceive+0xc73 sys/kern/uipc_socket.c:1021 recvit(ffff8000ffffacf0,5,ffff80003c4e54b0,0,ffff80003c4e5560) at recvit+0x40a sys/kern/uipc_syscalls.c:1072 sys_recvmsg(ffff8000ffffacf0,ffff80003c4e5610,ffff80003c4e5560) at sys_recvmsg+0x1bf sys/kern/uipc_syscalls.c:872 syscall(ffff80003c4e5610) at syscall+0xbc6 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c4e5610) at syscall+0xbc6 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x63b5fd00ac0, count: -14 ddb{1}> show registers rdi 0 rsi 0x80000 acpi_pdirpa+0x6be71 rbp 0xffff80003c4e4df0 rbx 0xfffffd800470d3d8 rdx 0xffff800001435e00 rcx 0xffff8000ffffacf0 rax 0x7ffff acpi_pdirpa+0x6be70 r8 0xffff80003c4e4cd0 r9 0x8080808080808080 r10 0x5aafa3d2d4fcc87d r11 0x4af9f15f37e81316 r12 0 r13 0xfffffd8003f24f00 r14 0x3 r15 0xffffffff rip 0xffffffff810240e5 db_enter+0x25 cs 0x8 rflags 0x246 rsp 0xffff80003c4e4de0 ss 0x10 db_enter+0x25: addq $0x8,%rsp ddb{1}> show proc PROC (syz-executor) tid=498721 pid=48486 tcnt=2 stat=onproc flags process=1000000 proc=4000000 runpri=32, usrpri=50, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff80003c4f14c0,0xffff8000ffffcf80 process=0xffff80003c5864e8 user=0xffff80003c4e0000, vmspace=0xfffffd806bcbb908 estcpu=36, cpticks=0, pctcpu=0.0, user=0, sys=0, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 739 402757 48154 0 7 0 syz-executor 739 132785 48154 0 3 0x4000080 fsleep syz-executor 739 368109 48154 0 2 0x4000000 syz-executor 16013 513740 37704 0 3 0x3000 suspend syz-executor 16013 441332 37704 0 2 0x4081000 syz-executor 16013 444845 37704 0 2 0x4081000 syz-executor 16013 394178 37704 0 2 0x4081000 syz-executor 69558 467753 20535 0 2 0 syz-executor 69558 142049 20535 0 3 0x4000080 fsleep syz-executor 48486 81662 36376 0 2 0x1000000 syz-executor *48486 498721 36376 0 7 0x5000000 syz-executor 72382 168045 32824 0 2 0 syz-executor 72382 5413 32824 0 3 0x4000080 ttyin syz-executor 7669 86131 52269 0 2 0 syz-executor 7669 60708 52269 0 3 0x4000080 sbwait syz-executor 7669 422448 52269 0 3 0x4000080 sbufrcv syz-executor 87842 31997 53044 0 2 0 syz-executor 87842 174118 53044 0 3 0x4000080 kqread syz-executor 87842 28346 53044 0 3 0x4000080 fsleep syz-executor 87842 112573 53044 0 3 0x4000080 fsleep syz-executor 48154 432883 84466 0 3 0x82 nanoslp syz-executor 93294 213247 1 0 3 0x80 nanoslp init 6973 155541 0 0 3 0x14200 bored sosplice 89338 349251 84466 0 3 0x82 nanoslp syz-executor 52269 366158 84466 0 3 0x82 nanoslp syz-executor 37704 356653 84466 0 3 0x82 nanoslp syz-executor 20535 3440 84466 0 3 0x82 nanoslp syz-executor 53044 164640 84466 0 3 0x82 nanoslp syz-executor 36376 73523 84466 0 3 0x82 nanoslp syz-executor 32824 299210 84466 0 3 0x82 nanoslp syz-executor 84466 480064 42103 0 3 0x82 kqread syz-executor 42103 2175 34683 0 3 0x10008a sigsusp ksh 34683 159075 93728 0 3 0x98 kqread sshd-session 93728 514361 45186 0 3 0x92 kqread sshd-session 45186 182465 1 0 3 0x88 kqread sshd 15330 244650 34694 74 3 0x1100092 bpf pflogd 34694 239745 1 0 3 0x80 sbwait pflogd 58735 475429 70277 73 3 0x1100090 kqread syslogd 70277 447044 1 0 3 0x100082 sbwait syslogd 20226 437203 1 0 3 0x100080 kqread resolvd 77661 354347 254 77 3 0x100092 kqread dhcpleased 50095 11559 254 77 3 0x100092 kqread dhcpleased 254 155695 1 0 3 0x80 kqread dhcpleased 96080 379203 0 0 3 0x14200 pause smr 53935 375173 0 0 2 0x14200 zerothread 15938 154940 0 0 3 0x14200 aiodoned aiodoned 86913 247451 0 0 3 0x14200 syncer update 61898 154649 0 0 3 0x14200 cleaner cleaner 82443 86255 0 0 3 0x14200 reaper reaper 20140 172996 0 0 3 0x14200 pgdaemon pagedaemon 28825 15648 0 0 3 0x14200 bored viomb 91903 101059 0 0 3 0x40014200 acpi0 acpi0 97309 170660 0 0 3 0x40014200 idle1 36919 105472 0 0 3 0x14200 bored softnet3 48581 149714 0 0 3 0x14200 bored softnet2 11468 12458 0 0 3 0x14200 bored softnet1 20106 152663 0 0 2 0x14200 softnet0 49128 329803 0 0 3 0x14200 bored systqmp 74582 268150 0 0 3 0x14200 bored systq 72578 321879 0 0 3 0x14200 tmoslp softclockmp 84143 374572 0 0 3 0x40014200 tmoslp softclock 98904 53443 0 0 3 0x40014200 idle0 1 243454 0 0 3 0x82 wait init 0 0 -1 0 3 0x10010200 scheduler swapper ddb{1}> show all locks Process 48486 (syz-executor) thread 0xffff8000ffffacf0 (498721) 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 unp_externalize+0x14e #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 exclusive rwlock sbufrcv r = 0 (0xffff800010fcabe8) #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 sblock+0xb7 sys/kern/uipc_socket2.c:536 #3 soreceive+0x28e sys/kern/uipc_socket.c:882 #4 recvit+0x40a sys/kern/uipc_syscalls.c:1072 #5 sys_recvmsg+0x1bf sys/kern/uipc_syscalls.c:872 #6 syscall+0xbc6 mi_syscall sys/sys/syscall_mi.h:176 [inline] #6 syscall+0xbc6 sys/arch/amd64/amd64/trap.c:577 #7 Xsyscall+0x128 Process 7669 (syz-executor) thread 0xffff80003c4f1230 (60708) exclusive rwlock sbufrcv r = 0 (0xffff800010fcae98) #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 sblock+0xb7 sys/kern/uipc_socket2.c:536 #3 soreceive+0x28e sys/kern/uipc_socket.c:882 #4 recvit+0x40a sys/kern/uipc_syscalls.c:1072 #5 sys_recvmmsg+0x3d3 sys/kern/uipc_syscalls.c:963 #6 syscall+0xbc6 mi_syscall sys/sys/syscall_mi.h:176 [inline] #6 syscall+0xbc6 sys/arch/amd64/amd64/trap.c:577 #7 Xsyscall+0x128 ddb{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10209 11043K 11366K 166960K 12803 0 pcb 17 17K 18K 166960K 314 0 rtable 234 10K 10K 166960K 504 0 pf 38 18K 26K 166960K 139 0 ifaddr 41 7K 8K 166960K 93 0 ifgroup 55 2K 2K 166960K 148 0 sysctl 4 1K 1K 166960K 4 0 counters 64 36K 37K 166960K 182 0 ioctlops 0 0K 4K 166960K 1667 0 iov 1 4K 20K 166960K 66 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1420 89K 90K 166960K 2200 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 5K 166960K 11 0 VM map 2 1K 1K 166960K 2 0 sem 14 10K 10K 166960K 96 0 dirhash 12 2K 3K 166960K 39 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 18 65K 85K 166960K 1121 0 sigio 0 0K 0K 166960K 51 0 proc 66 91K 128K 166960K 667 0 subproc 72 4K 4K 166960K 82 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 103 0 in_multi 88 6K 7K 166960K 146 0 ether_multi 1 0K 0K 166960K 6 0 mrt 1 0K 0K 166960K 4 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 103 466K 466K 166960K 103 0 exec 0 0K 1K 166960K 652 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 234 73K 77K 166960K 12309 0 UVM aobj 60 2K 2K 166960K 65 0 pinsyscall 42 84K 102K 166960K 2275 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 14 0K 2K 166960K 63 0 temp 82 8652K 8897K 166960K 35725 0 kqueue 14 22K 30K 166960K 193 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 120 176 0 173 3 0 3 3 0 8 2 rtentry 112 146 0 44 4 0 4 4 0 8 0 unpcb 144 1454 0 1433 11 5 6 6 0 8 5 syncache 336 13 0 13 1 0 1 1 0 8 1 tcpqe 32 2 0 2 1 1 0 1 0 8 0 tcpcb 808 534 0 527 14 9 5 11 0 8 3 arp 120 21 0 5 1 0 1 1 0 8 0 inpcb 376 1524 0 1513 15 8 7 11 0 8 5 nd6 136 29 0 7 1 0 1 1 0 8 0 pkpcb 40 71 0 71 2 1 1 1 0 8 1 kcovpl 48 9 0 1 1 0 1 1 0 8 0 mppekey 1024 1 0 1 1 1 0 1 0 8 0 ppxss 1168 49 0 49 1 0 1 1 0 8 1 pppxif 1472 6 0 6 2 1 1 1 0 8 1 pffrag 232 9 0 2 1 0 1 1 0 482 0 pffrnode 88 9 0 2 1 0 1 1 0 8 0 pffrent 40 11 0 4 1 0 1 1 0 8 0 pfosfp 40 1428 0 1428 5 0 5 5 0 8 5 pfosfpen 112 1428 0 1428 21 0 21 21 0 8 21 pfrktable 1344 1 0 0 1 0 1 1 0 8 0 pftag 88 1 0 0 1 0 1 1 0 8 0 pfstitem 24 82 0 28 1 0 1 1 0 8 0 pfstkey 128 212 0 158 3 0 3 3 0 8 0 pfstate 376 146 0 93 7 0 7 7 0 8 0 pfrule 1344 26 0 19 2 1 1 2 0 8 0 art_heap8 4096 3 0 0 3 0 3 3 0 8 0 art_heap4 256 586 0 165 31 2 29 29 0 8 2 art_table 32 589 0 165 4 0 4 4 0 8 0 art_node 16 138 0 47 1 0 1 1 0 8 0 sysvmsgpl 40 15 0 13 1 0 1 1 0 8 0 semapl 112 87 0 75 1 0 1 1 0 8 0 shmpl 112 62 0 5 2 0 2 2 0 8 0 dirhash 1024 35 0 18 3 0 3 3 0 8 0 dino2pl 256 3347 0 1847 95 0 95 95 0 8 0 ffsino 280 3347 0 1847 109 0 109 109 0 8 0 nchpl 144 4960 0 3270 63 0 63 63 0 8 0 rtmask 32 5 0 5 2 2 0 1 0 8 0 uvmvnodes 80 3975 0 0 82 0 82 82 0 8 0 vnodes 216 3975 0 0 221 0 221 221 0 8 0 namei 1024 18467 0 18467 2 1 1 2 0 8 1 percpumem 16 105 0 59 1 0 1 1 0 8 0 kstatmem 264 90 0 66 2 0 2 2 0 8 0 scxspl 216 20632 0 20632 11 8 3 8 1 8 3 plimitpl 152 251 0 234 1 0 1 1 0 8 0 sigapl 424 1452 0 1401 11 2 9 9 0 8 2 futexpl 64 15395 0 15391 1 0 1 1 0 8 0 knotepl 120 320 0 0 10 0 10 10 0 8 0 kqueuepl 216 417 0 407 6 5 1 5 0 8 0 pipepl 328 227 0 200 5 2 3 5 0 8 0 fdescpl 504 1410 0 1378 5 0 5 5 0 8 0 filepl 152 9803 0 9581 20 3 17 17 0 8 7 lockfpl 104 504 0 499 2 1 1 2 0 8 0 lockfspl 48 231 0 226 1 0 1 1 0 8 0 sessionpl 144 33 0 25 1 0 1 1 0 8 0 pgrppl 48 55 0 39 1 0 1 1 0 8 0 ucredpl 104 1167 0 1153 1 0 1 1 0 8 0 zombiepl 144 1403 0 1401 1 0 1 1 0 8 0 processpl 1176 1452 0 1401 6 0 6 6 0 8 0 procpl 656 3241 0 3177 9 1 8 8 0 8 2 srpgc 96 4 0 4 2 1 1 1 0 8 1 sosppl 168 6 0 6 1 1 0 1 0 8 0 sockpl 688 3238 0 3203 23 11 12 16 0 8 8 mcl64k 65536 6 0 0 1 0 1 1 0 8 0 mcl16k 16384 2 0 0 1 0 1 1 0 8 0 mcl12k 12288 1 0 0 1 0 1 1 0 8 0 mcl8k 8192 6 0 0 1 0 1 1 0 8 0 mcl4k 4096 116 0 0 15 0 15 15 0 8 0 mcl2k 2048 30 0 0 4 0 4 4 0 8 0 mtagpl 96 102 0 0 3 0 3 3 0 8 0 mbufpl 256 326 0 0 20 0 20 20 0 8 0 bufpl 280 9123 0 2969 440 0 440 440 0 8 0 anonpl 24 216149 0 212751 78 13 65 65 0 184 20 amapchunkpl 152 39257 0 38737 31 5 26 28 0 158 6 amappl16 200 4845 0 4811 42 26 16 26 0 8 11 amappl15 192 4 0 4 1 1 0 1 0 8 0 amappl14 184 129 0 118 1 0 1 1 0 8 0 amappl13 176 4 0 4 1 1 0 1 0 8 0 amappl12 168 2089 0 2058 3 1 2 2 0 8 0 amappl11 160 54 0 40 1 0 1 1 0 8 0 amappl10 152 22 0 22 1 1 0 1 0 8 0 amappl9 144 247 0 247 1 1 0 1 0 8 0 amappl8 136 29 0 26 1 0 1 1 0 8 0 amappl7 128 117 0 106 1 0 1 1 0 8 0 amappl6 120 195 0 191 1 0 1 1 0 8 0 amappl5 112 139 0 128 1 0 1 1 0 8 0 amappl4 104 358 0 337 1 0 1 1 0 8 0 amappl3 96 8031 0 7912 4 0 4 4 0 8 0 amappl2 88 741 0 678 2 0 2 2 0 8 0 amappl1 80 13089 0 12535 14 0 14 14 0 8 0 amappl 88 11815 0 11636 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 7 0 7 1 1 0 1 0 8 0 dma16 16 18 0 17 1 0 1 1 0 8 0 aobjpl 72 64 0 5 2 0 2 2 0 8 0 uaddrrnd 24 1410 0 1378 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 1410 0 1378 1 0 1 1 0 8 0 vmmpekpl 168 13922 0 13877 3 0 3 3 0 8 0 vmmpepl 168 93752 0 91852 111 9 102 102 0 357 9 vmsppl 456 1409 0 1378 5 0 5 5 0 8 0 rwobjpl 64 32061 0 27111 83 0 83 83 0 8 0 pdppl 4096 2827 0 2756 107 34 73 81 0 8 2 pvpl 32 18027 0 0 148 2 146 146 0 265 0 pmappl 248 1409 0 1378 3 0 3 3 0 8 0 extentpl 40 55 0 38 1 0 1 1 0 8 0 phpool 112 308 0 49 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 __mp_lock(ffffffff839068f0) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:113 [inline] __mp_lock(ffffffff839068f0) at __mp_lock+0x192 sys/kern/kern_lock.c:144 softintr_dispatch(0) at softintr_dispatch+0x5b sys/arch/amd64/amd64/softintr.c:88 Xsoftclock() at Xsoftclock+0x27 end of kernel end trace frame: 0x71cebd0db8a0, count: -6 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(fffffd8068280a78,9,0) at witness_checkorder+0x1047 rw_do_enter_write(fffffd8068280a60,1) at rw_do_enter_write+0xb7 sys/kern/kern_rwlock.c:233 rrw_enter(fffffd8068280a60,1) at rrw_enter+0xc6 sys/kern/kern_rwlock.c:616 VOP_LOCK(fffffd80678409a8,2001) at VOP_LOCK+0xa6 sys/kern/vfs_vops.c:524 vn_lock(fffffd80678409a8,2001) at vn_lock+0xa4 sys/kern/vfs_vnops.c:570 vfs_getcwd_common(fffffd80678409a8,fffffd80678409a8,0,0,200,0,13b84f578efdbd99) at vfs_getcwd_common+0xd1 sys/kern/vfs_getcwd.c:287 vn_isunder(fffffd80678409a8,fffffd80678409a8,ffff8000ffffacf0) at vn_isunder+0x56 sys/kern/vfs_vnops.c:694 unp_externalize(fffffd806a6c2900,33,0) at unp_externalize+0x286 sys/kern/uipc_usrreq.c:1086 soreceive(ffff800010fcab08,ffff80003c4e5368,ffff80003c4e5318,0,ffff80003c4e5358,ffff80003c4e54dc,46d60b21026f73a) at soreceive+0xc73 sys/kern/uipc_socket.c:1021 recvit(ffff8000ffffacf0,5,ffff80003c4e54b0,0,ffff80003c4e5560) at recvit+0x40a sys/kern/uipc_syscalls.c:1072 sys_recvmsg(ffff8000ffffacf0,ffff80003c4e5610,ffff80003c4e5560) at sys_recvmsg+0x1bf sys/kern/uipc_syscalls.c:872 syscall(ffff80003c4e5610) at syscall+0xbc6 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c4e5610) at syscall+0xbc6 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x63b5fd00ac0, count: -14