panic: m_copym0: short mbuf chain Stopped at db_enter+0x18: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND 509606 41381 0 0x2 0 0K syz-executor.1 *137088 54199 0 0x12 0 1 sshd db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:398 panic(ffffffff823d1cdf) at panic+0x15c sys/kern/subr_prf.c:207 m_copym(fffffd806f149e00,5e0,3dc,2) at m_copym+0x583 sys/kern/uipc_mbuf.c:695 tcp_output(ffff800000ad7540) at tcp_output+0x15ba sys/netinet/tcp_output.c:673 tcp_usrreq(fffffd806ead6648,9,fffffd806f295400,0,0,ffff800020e41d50) at tcp_usrreq+0xa55 sosend(fffffd806ead6648,0,ffff800020e63d08,0,0,80) at sosend+0x671 sys/kern/uipc_socket.c:549 dofilewritev(ffff800020e41d50,4,ffff800020e63d08,0,ffff800020e63df0) at dofilewritev+0x1b6 sys/kern/sys_generic.c:365 sys_write(ffff800020e41d50,ffff800020e63da0,ffff800020e63df0) at sys_write+0x83 sys/kern/sys_generic.c:285 syscall(ffff800020e63e70) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800020e63e70) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffd05f0, count: 5 https://www.openbsd.org/ddb.html describes the minimum info required in bug reports. Insufficient info makes it difficult to find and fix bugs. ddb{1}> ddb{1}> set $lines = 0 ddb{1}> set $maxwidth = 0 ddb{1}> show panic m_copym0: short mbuf chain ddb{1}> trace db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:398 panic(ffffffff823d1cdf) at panic+0x15c sys/kern/subr_prf.c:207 m_copym(fffffd806f149e00,5e0,3dc,2) at m_copym+0x583 sys/kern/uipc_mbuf.c:695 tcp_output(ffff800000ad7540) at tcp_output+0x15ba sys/netinet/tcp_output.c:673 tcp_usrreq(fffffd806ead6648,9,fffffd806f295400,0,0,ffff800020e41d50) at tcp_usrreq+0xa55 sosend(fffffd806ead6648,0,ffff800020e63d08,0,0,80) at sosend+0x671 sys/kern/uipc_socket.c:549 dofilewritev(ffff800020e41d50,4,ffff800020e63d08,0,ffff800020e63df0) at dofilewritev+0x1b6 sys/kern/sys_generic.c:365 sys_write(ffff800020e41d50,ffff800020e63da0,ffff800020e63df0) at sys_write+0x83 sys/kern/sys_generic.c:285 syscall(ffff800020e63e70) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800020e63e70) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffd05f0, count: -10 ddb{1}> show registers rdi 0 rsi 0x1 rbp 0xffff800020e637d0 rbx 0xffff800020e63880 rdx 0x8b rcx 0x2 rax 0x1 r8 0xffffffff81bc79af kprintf+0x16f r9 0x1 r10 0x2 r11 0xbca62d883b648612 r12 0x3000000008 r13 0xffff800020e637e0 r14 0x100 r15 0x1 rip 0xffffffff81da3c38 db_enter+0x18 cs 0x8 rflags 0x246 rsp 0xffff800020e637c0 ss 0x10 db_enter+0x18: addq $0x8,%rsp ddb{1}> show proc PROC (sshd) pid=137088 stat=onproc flags process=12 proc=0 pri=50, usrpri=50, nice=20 forw=0xffffffffffffffff, list=0xffff800020e404f0,0xffff800020e40c50 process=0xffff800020e38f78 user=0xffff800020e5e000, vmspace=0xfffffd806e8fa8a8 estcpu=0, cpticks=1, pctcpu=0.1 user=0, sys=0, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 28796 382049 55350 0 2 0 syz-executor.0 28796 4342 55350 0 3 0x4000080 fsleep syz-executor.0 10976 408056 0 0 3 0x14280 nfsidl nfsio 12383 184680 0 0 3 0x14280 nfsidl nfsio 86883 437709 0 0 3 0x14280 nfsidl nfsio 72263 366334 0 0 3 0x14280 nfsidl nfsio 82973 105016 0 0 3 0x14280 nfsidl nfsio 22896 358148 0 0 3 0x14280 nfsidl nfsio 27561 293935 0 0 3 0x14280 nfsidl nfsio 66291 211476 0 0 3 0x14280 nfsidl nfsio 62152 56914 0 0 3 0x14280 nfsidl nfsio 46822 92473 0 0 3 0x14280 nfsidl nfsio 97370 97532 0 0 3 0x14280 nfsidl nfsio 30574 416905 0 0 3 0x14280 nfsidl nfsio 68338 419108 0 0 3 0x14280 nfsidl nfsio 25970 150980 0 0 3 0x14280 nfsidl nfsio 66177 58821 0 0 3 0x14280 nfsidl nfsio 15872 440963 0 0 3 0x14280 nfsidl nfsio 14263 45216 0 0 3 0x14280 nfsidl nfsio 43261 181131 0 0 3 0x14280 nfsidl nfsio 46480 297116 0 0 3 0x14280 nfsidl nfsio 53290 139593 0 0 3 0x14280 nfsidl nfsio 48654 126805 0 0 3 0x14200 bored sosplice 41381 509606 33562 0 7 0x2 syz-executor.1 55350 231165 33562 0 3 0x82 nanosleep syz-executor.0 33562 68528 47758 0 3 0x82 thrsleep syz-fuzzer 33562 366912 47758 0 3 0x4000082 nanosleep syz-fuzzer 33562 244027 47758 0 3 0x4000082 thrsleep syz-fuzzer 33562 280553 47758 0 3 0x4000082 thrsleep syz-fuzzer 33562 191114 47758 0 3 0x4000082 thrsleep syz-fuzzer 33562 493543 47758 0 3 0x4000082 thrsleep syz-fuzzer 33562 472246 47758 0 3 0x4000082 thrsleep syz-fuzzer 33562 317300 47758 0 3 0x4000082 thrsleep syz-fuzzer 33562 45130 47758 0 2 0x4000002 syz-fuzzer 33562 32675 47758 0 3 0x4000082 nanosleep syz-fuzzer 47758 246307 54199 0 3 0x10008a pause ksh *54199 137088 95135 0 7 0x12 sshd 41116 415530 1 0 3 0x100083 ttyin getty 95135 327984 1 0 3 0x80 select sshd 37778 59873 94242 74 3 0x100092 bpf pflogd 94242 119389 1 0 3 0x80 netio pflogd 40452 41746 76253 73 3 0x100090 kqread syslogd 76253 489197 1 0 3 0x100082 netio syslogd 7107 464544 1 77 3 0x100090 poll dhclient 68631 505429 1 0 3 0x80 poll dhclient 35685 175772 0 0 3 0x14200 bored smr 66199 219 0 0 2 0x14200 zerothread 76321 326142 0 0 3 0x14200 aiodoned aiodoned 7817 87688 0 0 3 0x14200 syncer update 31702 20177 0 0 3 0x14200 cleaner cleaner 4728 153443 0 0 3 0x14200 reaper reaper 57199 58395 0 0 3 0x14200 pgdaemon pagedaemon 78205 475777 0 0 3 0x14200 bored crynlk 66203 69504 0 0 3 0x14200 bored crypto 29378 404556 0 0 3 0x40014200 acpi0 acpi0 52918 86580 0 0 3 0x40014200 idle1 4677 295548 0 0 3 0x14200 bored softnet 5234 206274 0 0 3 0x14200 bored systqmp 65994 359428 0 0 3 0x14200 bored systq 62751 479836 0 0 3 0x40014200 bored softclock 12869 104367 0 0 3 0x40014200 idle0 1 13750 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{1}> show all locks Process 54199 (sshd) thread 0xffff800020e41d50 (137088) exclusive rwlock netlock r = 0 (0xffffffff827254e8) #0 witness_lock+0x4c7 stacktrace_save sys/sys/stacktrace.h:36 [inline] #0 witness_lock+0x4c7 sys/kern/subr_witness.c:1164 #1 solock+0x5a sys/kern/uipc_socket2.c:282 #2 sosend+0x559 sys/kern/uipc_socket.c:537 #3 dofilewritev+0x1b6 sys/kern/sys_generic.c:365 #4 sys_write+0x83 sys/kern/sys_generic.c:285 #5 syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] #5 syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 #6 Xsyscall+0x128 ddb{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 9506 6418K 7449K 78643K 11431 0 pcb 13 8K 8K 78643K 47 0 rtable 117 5K 8K 78643K 369 0 ifaddr 73 15K 16K 78643K 162 0 sysctl 1 1K 1K 78643K 1 0 counters 43 33K 34K 78643K 69 0 ioctlops 0 0K 4K 78643K 1504 0 iov 0 0K 12K 78643K 27 0 mount 1 1K 1K 78643K 1 0 vnodes 1225 77K 77K 78643K 1426 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 34 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1824 197K 290K 78643K 13058 0 file desc 5 13K 25K 78643K 217 0 proc 62 63K 95K 78643K 450 0 subproc 32 2K 2K 78643K 34 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 0 0K 0K 78643K 25 0 in_multi 65 3K 3K 78643K 81 0 ether_multi 1 0K 0K 78643K 6 0 mrt 0 0K 0K 78643K 3 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 55 254K 254K 78643K 55 0 exec 0 0K 1K 78643K 215 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 126 39K 48K 78643K 1670 0 UVM aobj 13 4K 4K 78643K 14 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 18 0 NDP 10 0K 0K 78643K 27 0 temp 87 3846K 3911K 78643K 3116 0 kqueue 5 5K 12K 78643K 13 0 SYN cache 2 16K 16K 78643K 2 0 ddb{1}> show all pools Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle arp 64 6 0 0 1 0 1 1 0 8 0 plcache 128 20 0 0 1 0 1 1 0 8 0 rtpcb 80 23 0 21 1 0 1 1 0 8 0 rtentry 112 48 0 3 2 0 2 2 0 8 0 unpcb 120 130 0 120 1 0 1 1 0 8 0 syncache 264 10 0 10 2 1 1 1 0 8 1 tcpqe 32 1028 0 1028 3 2 1 1 0 8 1 tcpcb 544 79 0 73 1 0 1 1 0 8 0 inpcb 280 336 0 324 2 0 2 2 0 8 1 rttmr 72 1 0 1 1 0 1 1 0 8 1 nd6 48 7 0 1 1 0 1 1 0 8 0 ppxss 1128 2 0 2 2 1 1 1 0 8 1 pffrag 232 4 0 4 1 0 1 1 0 482 1 pffrnode 88 4 0 4 1 0 1 1 0 8 1 pffrent 40 8 0 8 1 0 1 1 0 8 1 pfosfp 40 846 0 423 5 0 5 5 0 8 0 pfosfpen 112 1428 0 714 21 0 21 21 0 8 0 pfrktable 1344 32 0 30 1 0 1 1 0 8 0 pfstitem 24 25 0 6 1 0 1 1 0 8 0 pfstkey 112 25 0 6 1 0 1 1 0 8 0 pfstate 328 25 0 6 2 0 2 2 0 8 0 pfrule 1360 29 0 22 2 1 1 2 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 196 0 1 13 0 13 13 0 8 0 art_table 32 197 0 1 2 0 2 2 0 8 0 art_node 16 47 0 6 1 0 1 1 0 8 0 semupl 112 1 0 1 1 1 0 1 0 8 0 semapl 112 30 0 20 1 0 1 1 0 8 0 shmpl 112 12 0 1 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 1709 0 304 89 0 89 89 0 8 0 ffsino 272 1709 0 304 96 1 95 95 0 8 0 nchpl 144 2185 0 577 60 0 60 60 0 8 0 uvmvnodes 72 1914 0 0 35 0 35 35 0 8 0 vnodes 208 1914 0 0 101 0 101 101 0 8 0 namei 1024 5971 0 5970 2 1 1 1 0 8 0 percpumem 16 45 0 13 1 0 1 1 0 8 0 vcpupl 1984 3 0 0 1 0 1 1 0 8 0 vmpool 560 5 0 2 2 1 1 1 0 8 0 pfiaddrpl 120 10 0 8 1 0 1 1 0 8 0 scxspl 192 6590 0 6589 8 7 1 7 0 8 0 plimitpl 152 25 0 17 1 0 1 1 0 8 0 sigapl 424 453 0 401 6 0 6 6 0 8 0 futexpl 56 3101 0 3100 1 0 1 1 0 8 0 knotepl 112 69 0 50 1 0 1 1 0 8 0 kqueuepl 144 28 0 24 1 0 1 1 0 8 0 pipelkpl 48 102 0 92 1 0 1 1 0 8 0 pipepl 120 204 0 185 1 0 1 1 0 8 0 fdescpl 496 417 0 401 3 0 3 3 0 8 0 filepl 152 2388 0 2285 6 1 5 5 0 8 1 lockfpl 104 42 0 41 1 0 1 1 0 8 0 lockfspl 48 17 0 16 1 0 1 1 0 8 0 sessionpl 112 18 0 7 1 0 1 1 0 8 0 pgrppl 48 18 0 7 1 0 1 1 0 8 0 ucredpl 96 211 0 202 1 0 1 1 0 8 0 zombiepl 144 401 0 401 2 1 1 1 0 8 1 processpl 984 453 0 401 8 1 7 7 0 8 0 procpl 624 906 0 844 6 0 6 6 0 8 0 sosppl 128 1 0 1 1 0 1 1 0 8 1 sockpl 400 491 0 467 6 1 5 5 0 8 1 mcl64k 65536 10 0 0 2 0 2 2 0 8 0 mcl16k 16384 3 0 0 1 0 1 1 0 8 0 mcl12k 12288 2 0 0 1 0 1 1 0 8 0 mcl9k 9216 1 0 0 1 0 1 1 0 8 0 mcl8k 8192 4 0 0 1 0 1 1 0 8 0 mcl4k 4096 6 0 0 1 0 1 1 0 8 0 mcl2k2 2112 1 0 0 1 0 1 1 0 8 0 mcl2k 2048 217 0 0 27 0 27 27 0 8 0 mtagpl 80 15 0 0 1 0 1 1 0 8 0 mbufpl 256 261 0 0 16 0 16 16 0 8 0 bufpl 280 3767 0 133 260 0 260 260 0 8 0 anonpl 16 57056 0 40802 81 2 79 80 0 124 10 amapchunkpl 152 2338 0 2189 11 0 11 11 0 158 3 amappl16 192 1942 0 1064 55 2 53 55 0 8 7 amappl15 184 1 0 0 1 0 1 1 0 8 0 amappl14 176 24 0 19 1 0 1 1 0 8 0 amappl13 168 214 0 209 1 0 1 1 0 8 0 amappl12 160 7 0 7 1 1 0 1 0 8 0 amappl11 152 61 0 45 1 0 1 1 0 8 0 amappl10 144 116 0 108 1 0 1 1 0 8 0 amappl9 136 386 0 385 1 0 1 1 0 8 0 amappl8 128 358 0 323 2 0 2 2 0 8 0 amappl7 120 117 0 106 1 0 1 1 0 8 0 amappl6 112 30 0 22 1 0 1 1 0 8 0 amappl5 104 225 0 209 1 0 1 1 0 8 0 amappl4 96 583 0 552 1 0 1 1 0 8 0 amappl3 88 202 0 194 1 0 1 1 0 8 0 amappl2 80 2399 0 2328 2 0 2 2 0 8 0 amappl1 72 18918 0 18474 23 13 10 18 0 8 0 amappl 80 1145 0 1098 2 0 2 2 0 84 0 dma4096 4096 1 0 1 1 1 0 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 13 0 1 1 0 1 1 0 8 0 uaddrrnd 24 422 0 403 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 422 0 403 1 0 1 1 0 8 0 vmmpekpl 168 7254 0 7210 3 0 3 3 0 8 0 vmmpepl 168 57602 0 55554 119 17 102 110 0 357 8 vmsppl 368 421 0 403 2 0 2 2 0 8 0 pdppl 4096 851 0 809 7 1 6 6 0 8 0 pvpl 32 181984 0 163021 190 1 189 190 0 265 32 pmappl 232 421 0 403 3 1 2 2 0 8 0 extentpl 40 53 0 36 1 0 1 1 0 8 0 phpool 112 278 0 7 8 0 8 8 0 8 0 ddb{1}> machine ddbcpu 0 Stopped at x86_ipi_db+0x1a: addq $0x8,%rsp x86_ipi_db(ffffffff82791ff0) at x86_ipi_db+0x1a sys/arch/amd64/amd64/db_interface.c:352 x86_ipi_handler() at x86_ipi_handler+0xc6 sys/arch/amd64/amd64/ipi.c:106 Xresume_lapic_ipi() at Xresume_lapic_ipi+0x23 spllower(0) at spllower+0x87 sys/arch/amd64/amd64/intr.c:719 tsleep(fffffd806ee05a00,11,ffffffff82452497,0) at tsleep+0x162 sys/kern/kern_synch.c:141 biowait(fffffd806ee05a00) at biowait+0xa6 sys/kern/vfs_bio.c:1256 bwrite(fffffd806ee05a00) at bwrite+0x1e4 sys/kern/vfs_bio.c:765 ffs_update(fffffd8068953668,1) at ffs_update+0x2c2 sys/ufs/ffs/ffs_inode.c:113 ufs_mkdir(ffff800022ef5900) at ufs_mkdir+0x42e sys/ufs/ufs/ufs_vnops.c:1197 VOP_MKDIR(fffffd80675fc688,ffff800022ef5a60,ffff800022ef5ab0,ffff800022ef5990) at VOP_MKDIR+0xc6 sys/kern/vfs_vops.c:450 domkdirat(ffff800020ddd388,ffffff9c,7f7ffffc8be0,1ff) at domkdirat+0x121 sys/kern/vfs_syscalls.c:3051 syscall(ffff800022ef5c30) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800022ef5c30) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffc8c50, count: 2 ddb{0}> trace x86_ipi_db(ffffffff82791ff0) at x86_ipi_db+0x1a sys/arch/amd64/amd64/db_interface.c:352 x86_ipi_handler() at x86_ipi_handler+0xc6 sys/arch/amd64/amd64/ipi.c:106 Xresume_lapic_ipi() at Xresume_lapic_ipi+0x23 spllower(0) at spllower+0x87 sys/arch/amd64/amd64/intr.c:719 tsleep(fffffd806ee05a00,11,ffffffff82452497,0) at tsleep+0x162 sys/kern/kern_synch.c:141 biowait(fffffd806ee05a00) at biowait+0xa6 sys/kern/vfs_bio.c:1256 bwrite(fffffd806ee05a00) at bwrite+0x1e4 sys/kern/vfs_bio.c:765 ffs_update(fffffd8068953668,1) at ffs_update+0x2c2 sys/ufs/ffs/ffs_inode.c:113 ufs_mkdir(ffff800022ef5900) at ufs_mkdir+0x42e sys/ufs/ufs/ufs_vnops.c:1197 VOP_MKDIR(fffffd80675fc688,ffff800022ef5a60,ffff800022ef5ab0,ffff800022ef5990) at VOP_MKDIR+0xc6 sys/kern/vfs_vops.c:450 domkdirat(ffff800020ddd388,ffffff9c,7f7ffffc8be0,1ff) at domkdirat+0x121 sys/kern/vfs_syscalls.c:3051 syscall(ffff800022ef5c30) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800022ef5c30) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffc8c50, count: -13 ddb{0}> machine ddbcpu 1 Stopped at db_enter+0x18: addq $0x8,%rsp db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:398 panic(ffffffff823d1cdf) at panic+0x15c sys/kern/subr_prf.c:207 m_copym(fffffd806f149e00,5e0,3dc,2) at m_copym+0x583 sys/kern/uipc_mbuf.c:695 tcp_output(ffff800000ad7540) at tcp_output+0x15ba sys/netinet/tcp_output.c:673 tcp_usrreq(fffffd806ead6648,9,fffffd806f295400,0,0,ffff800020e41d50) at tcp_usrreq+0xa55 sosend(fffffd806ead6648,0,ffff800020e63d08,0,0,80) at sosend+0x671 sys/kern/uipc_socket.c:549 dofilewritev(ffff800020e41d50,4,ffff800020e63d08,0,ffff800020e63df0) at dofilewritev+0x1b6 sys/kern/sys_generic.c:365 sys_write(ffff800020e41d50,ffff800020e63da0,ffff800020e63df0) at sys_write+0x83 sys/kern/sys_generic.c:285 syscall(ffff800020e63e70) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800020e63e70) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffd05f0, count: 5 ddb{1}> trace db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:398 panic(ffffffff823d1cdf) at panic+0x15c sys/kern/subr_prf.c:207 m_copym(fffffd806f149e00,5e0,3dc,2) at m_copym+0x583 sys/kern/uipc_mbuf.c:695 tcp_output(ffff800000ad7540) at tcp_output+0x15ba sys/netinet/tcp_output.c:673 tcp_usrreq(fffffd806ead6648,9,fffffd806f295400,0,0,ffff800020e41d50) at tcp_usrreq+0xa55 sosend(fffffd806ead6648,0,ffff800020e63d08,0,0,80) at sosend+0x671 sys/kern/uipc_socket.c:549 dofilewritev(ffff800020e41d50,4,ffff800020e63d08,0,ffff800020e63df0) at dofilewritev+0x1b6 sys/kern/sys_generic.c:365 sys_write(ffff800020e41d50,ffff800020e63da0,ffff800020e63df0) at sys_write+0x83 sys/kern/sys_generic.c:285 syscall(ffff800020e63e70) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800020e63e70) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffd05f0, count: -10