panic: pool_cache_item_magic_check: mbufpl cpu free list modified: item addr 0xfffffd8061dc2c00+16 0x0!=0xa3e2cf996d943591 Stopped at db_enter+0x18: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND *390577 10997 0 0x12 0 1 sshd 351501 30815 0 0x14000 0x200 0 softnet db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:398 panic(ffffffff82407a62) at panic+0x164 sys/kern/subr_prf.c:218 pool_cache_get(ffffffff828c6318) at pool_cache_get+0x323 pool_cache_item_magic_check sys/kern/subr_pool.c:1781 [inline] pool_cache_get(ffffffff828c6318) at pool_cache_get+0x323 sys/kern/subr_pool.c:1884 pool_get(ffffffff828c6318,2) at pool_get+0x91 sys/kern/subr_pool.c:572 m_gethdr(2,2) at m_gethdr+0x4c sys/kern/uipc_mbuf.c:283 tcp_output(ffff800000adb030) at tcp_output+0x14e6 tcp_usrreq(fffffd806eaf8c88,9,fffffd806d33c200,0,0,ffff8000ffffeee0) at tcp_usrreq+0xa55 sosend(fffffd806eaf8c88,0,ffff800020e24788,0,0,80) at sosend+0x671 sys/kern/uipc_socket.c:555 dofilewritev(ffff8000ffffeee0,4,ffff800020e24788,0,ffff800020e24870) at dofilewritev+0x1b6 sys/kern/sys_generic.c:365 sys_write(ffff8000ffffeee0,ffff800020e24820,ffff800020e24870) at sys_write+0x83 sys/kern/sys_generic.c:285 syscall(ffff800020e248f0) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800020e248f0) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffd9200, count: 3 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 pool_cache_item_magic_check: mbufpl cpu free list modified: item addr 0xfffffd8061dc2c00+16 0x0!=0xa3e2cf996d943591 ddb{1}> trace db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:398 panic(ffffffff82407a62) at panic+0x164 sys/kern/subr_prf.c:218 pool_cache_get(ffffffff828c6318) at pool_cache_get+0x323 pool_cache_item_magic_check sys/kern/subr_pool.c:1781 [inline] pool_cache_get(ffffffff828c6318) at pool_cache_get+0x323 sys/kern/subr_pool.c:1884 pool_get(ffffffff828c6318,2) at pool_get+0x91 sys/kern/subr_pool.c:572 m_gethdr(2,2) at m_gethdr+0x4c sys/kern/uipc_mbuf.c:283 tcp_output(ffff800000adb030) at tcp_output+0x14e6 tcp_usrreq(fffffd806eaf8c88,9,fffffd806d33c200,0,0,ffff8000ffffeee0) at tcp_usrreq+0xa55 sosend(fffffd806eaf8c88,0,ffff800020e24788,0,0,80) at sosend+0x671 sys/kern/uipc_socket.c:555 dofilewritev(ffff8000ffffeee0,4,ffff800020e24788,0,ffff800020e24870) at dofilewritev+0x1b6 sys/kern/sys_generic.c:365 sys_write(ffff8000ffffeee0,ffff800020e24820,ffff800020e24870) at sys_write+0x83 sys/kern/sys_generic.c:285 syscall(ffff800020e248f0) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800020e248f0) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffd9200, count: -12 ddb{1}> show registers rdi 0 rsi 0x1 rbp 0xffff800020e24180 rbx 0xffff800020e24230 rdx 0x8b rcx 0x2 rax 0x1 r8 0xffff800020e24140 r9 0xffffffff82193d9f kprintf+0x16f r10 0x1 r11 0x82fd46a805f4d035 r12 0x3000000008 r13 0xffff800020e24190 r14 0x100 r15 0x1 rip 0xffffffff820d5aa8 db_enter+0x18 cs 0x8 rflags 0x246 rsp 0xffff800020e24170 ss 0x10 db_enter+0x18: addq $0x8,%rsp ddb{1}> show proc PROC (sshd) pid=390577 stat=onproc flags process=12 proc=0 pri=24, usrpri=50, nice=20 forw=0xffffffffffffffff, list=0xffff8000ffffe010,0xffff8000fffff8d0 process=0xffff8000ffffc000 user=0xffff800020e1f000, vmspace=0xfffffd806e904458 estcpu=0, cpticks=2, pctcpu=0.12 user=0, sys=2, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 26445 410739 0 0 3 0x14280 nfsidl nfsio 2690 489183 0 0 3 0x14280 nfsidl nfsio 79151 500562 0 0 3 0x14280 nfsidl nfsio 46050 82412 0 0 3 0x14280 nfsidl nfsio 87595 248444 0 0 3 0x14280 nfsidl nfsio 65520 451427 0 0 3 0x14280 nfsidl nfsio 26851 212176 0 0 3 0x14280 nfsidl nfsio 49880 473806 0 0 3 0x14280 nfsidl nfsio 28050 493645 0 0 3 0x14280 nfsidl nfsio 70650 387696 0 0 3 0x14280 nfsidl nfsio 79173 352172 0 0 3 0x14280 nfsidl nfsio 84107 308599 0 0 3 0x14280 nfsidl nfsio 52693 421189 0 0 3 0x14280 nfsidl nfsio 62731 488614 0 0 3 0x14280 nfsidl nfsio 10241 379097 0 0 3 0x14280 nfsidl nfsio 7834 386683 0 0 3 0x14280 nfsidl nfsio 97844 205448 0 0 3 0x14280 nfsidl nfsio 48727 427428 0 0 3 0x14280 nfsidl nfsio 11543 143065 0 0 3 0x14280 nfsidl nfsio 89408 361077 0 0 3 0x14280 nfsidl nfsio 84801 53746 0 0 3 0x14200 bored sosplice 45181 194801 89155 0 2 0x2 syz-executor.1 58073 261296 89155 0 2 0x2 syz-executor.0 89155 422761 72230 0 3 0x82 thrsleep syz-fuzzer 89155 217953 72230 0 3 0x4000082 nanosleep syz-fuzzer 89155 521542 72230 0 3 0x4000082 thrsleep syz-fuzzer 89155 37744 72230 0 3 0x4000082 thrsleep syz-fuzzer 89155 193702 72230 0 2 0x4000002 syz-fuzzer 89155 436699 72230 0 3 0x4000082 thrsleep syz-fuzzer 89155 317366 72230 0 2 0x4000002 syz-fuzzer 89155 5434 72230 0 3 0x4000082 thrsleep syz-fuzzer 72230 359855 10997 0 3 0x10008a pause ksh *10997 390577 51427 0 7 0x12 sshd 19507 124075 1 0 3 0x100083 ttyin getty 51427 91021 1 0 3 0x80 select sshd 19075 355902 99145 74 3 0x100092 bpf pflogd 99145 431023 1 0 3 0x80 netio pflogd 3094 34290 67512 73 3 0x100090 kqread syslogd 67512 360779 1 0 3 0x100082 netio syslogd 92279 110310 1 77 3 0x100090 poll dhclient 20262 374824 1 0 3 0x80 poll dhclient 5764 307854 0 0 3 0x14200 bored smr 4728 386169 0 0 2 0x14200 zerothread 57229 133220 0 0 3 0x14200 aiodoned aiodoned 93824 424603 0 0 3 0x14200 syncer update 23828 120438 0 0 3 0x14200 cleaner cleaner 72146 41020 0 0 3 0x14200 reaper reaper 66064 143402 0 0 3 0x14200 pgdaemon pagedaemon 72887 291586 0 0 3 0x14200 bored crynlk 59607 346684 0 0 3 0x14200 bored crypto 17185 287871 0 0 3 0x40014200 acpi0 acpi0 82135 134884 0 0 3 0x40014200 idle1 30815 351501 0 0 7 0x14200 softnet 38704 304497 0 0 3 0x14200 bored systqmp 36144 5816 0 0 3 0x14200 bored systq 95252 504742 0 0 3 0x40014200 bored softclock 55407 362761 0 0 3 0x40014200 idle0 1 246780 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{1}> show all locks Process 10997 (sshd) thread 0xffff8000ffffeee0 (390577) exclusive rwlock netlock r = 0 (0xffffffff82795a50) #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:543 #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 9508 6411K 6927K 78643K 14594 0 pcb 13 8K 8K 78643K 94 0 rtable 109 4K 5K 78643K 985 0 ifaddr 70 14K 15K 78643K 965 0 sysctl 2 0K 0K 78643K 2 0 counters 43 33K 34K 78643K 51 0 ioctlops 0 0K 4K 78643K 3030 0 iov 0 0K 12K 78643K 52 0 mount 1 1K 1K 78643K 1 0 vnodes 1219 77K 77K 78643K 2095 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 5K 78643K 31 0 VM map 2 1K 1K 78643K 2 0 sem 12 1K 1K 78643K 1122 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1824 197K 290K 78643K 13058 0 file desc 4 9K 25K 78643K 3330 0 sigio 0 0K 0K 78643K 4 0 proc 61 63K 83K 78643K 464 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 34 0 in_multi 47 2K 3K 78643K 1270 0 ether_multi 1 0K 0K 78643K 9 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 43 201K 201K 78643K 43 0 exec 0 0K 1K 78643K 634 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 962 6221K 6228K 78643K 10637 0 UVM aobj 39 4K 4K 78643K 45 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 48 0 NDP 11 0K 0K 78643K 317 0 temp 127 3870K 3936K 78643K 11288 0 kqueue 3 4K 8K 78643K 9 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 88 28 0 26 1 0 1 1 0 8 0 rtentry 112 422 0 378 2 0 2 2 0 8 0 unpcb 120 269 0 259 1 0 1 1 0 8 0 syncache 272 4 0 4 1 1 0 1 0 8 0 tcpqe 32 362 0 362 1 1 0 1 0 8 0 tcpcb 592 1510 0 1502 9 6 3 5 0 8 2 inpcb 296 6283 0 6276 5 2 3 3 0 8 2 rttmr 72 1 0 1 1 0 1 1 0 8 1 nd6 48 307 0 301 1 0 1 1 0 8 0 pkpcb 40 4 0 4 1 1 0 1 0 8 0 ppxss 1136 1 0 1 1 0 1 1 0 8 1 pfstscr 40 2 0 2 1 1 0 1 0 8 0 pffrag 232 10 0 10 1 0 1 1 0 482 1 pffrnode 88 10 0 10 1 0 1 1 0 8 1 pffrent 40 282 0 282 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 5 0 5 2 1 1 1 0 8 1 pfstitem 24 35 0 33 1 0 1 1 0 8 0 pfstkey 112 36 0 34 1 0 1 1 0 8 0 pfstate 328 36 0 34 3 1 2 3 0 8 1 pfsrctr 152 426 0 426 1 1 0 1 0 8 0 pfrule 1360 27 0 26 2 1 1 2 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 226 0 40 12 0 12 12 0 8 0 art_table 32 227 0 40 2 0 2 2 0 8 0 art_node 16 354 0 314 1 0 1 1 0 8 0 sysvmsgpl 40 25 0 0 1 0 1 1 0 8 0 semupl 112 5 0 5 2 2 0 1 0 8 0 semapl 112 1114 0 1104 1 0 1 1 0 8 0 shmpl 112 42 0 6 2 0 2 2 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 5217 0 3815 88 0 88 88 0 8 0 ffsino 272 5217 0 3815 94 0 94 94 0 8 0 nchpl 144 9855 0 8248 60 0 60 60 0 8 0 uvmvnodes 72 5926 0 0 108 0 108 108 0 8 0 vnodes 208 5926 0 0 312 0 312 312 0 8 0 namei 1024 29229 0 29229 2 1 1 1 0 8 1 percpumem 16 36 0 4 1 0 1 1 0 8 0 vcpupl 1984 1319 0 1 165 0 165 165 0 8 0 vmpool 560 1321 0 3 95 0 95 95 0 8 0 pfiaddrpl 120 2 0 2 1 1 0 1 0 8 0 scxspl 200 26804 0 26804 10 9 1 7 0 8 1 plimitpl 152 788 0 780 1 0 1 1 0 8 0 sigapl 424 3566 0 3515 6 0 6 6 0 8 0 futexpl 56 46737 0 46737 2 1 1 1 0 8 1 knotepl 112 70 0 50 1 0 1 1 0 8 0 kqueuepl 152 684 0 680 1 0 1 1 0 8 0 pipepl 304 181 0 170 7 5 2 2 0 8 1 fdescpl 496 3530 0 3515 3 0 3 3 0 8 0 filepl 152 20883 0 20779 6 0 6 6 0 8 2 lockfpl 104 135 0 134 1 0 1 1 0 8 0 lockfspl 48 42 0 41 1 0 1 1 0 8 0 sessionpl 120 18 0 7 1 0 1 1 0 8 0 pgrppl 48 24 0 13 1 0 1 1 0 8 0 ucredpl 96 4255 0 4246 1 0 1 1 0 8 0 zombiepl 144 3515 0 3515 1 0 1 1 0 8 1 processpl 1008 3566 0 3515 8 1 7 7 0 8 0 procpl 632 8793 0 8735 8 2 6 6 0 8 0 sosppl 144 14 0 14 2 1 1 1 0 8 1 sockpl 400 6585 0 6566 9 4 5 5 0 8 3 mcl64k 65536 13 0 0 2 0 2 2 0 8 0 mcl16k 16384 5 0 0 1 0 1 1 0 8 0 mcl12k 12288 16 0 0 2 0 2 2 0 8 0 mcl9k 9216 3 0 0 1 0 1 1 0 8 0 mcl8k 8192 7 0 0 1 0 1 1 0 8 0 mcl4k 4096 18 0 0 3 0 3 3 0 8 0 mcl2k2 2112 7 0 0 1 0 1 1 0 8 0 mcl2k 2048 204 0 0 23 0 23 23 0 8 0 mtagpl 96 78 0 0 2 0 2 2 0 8 0 mbufpl 256 593 0 0 33 0 33 33 0 8 0 bufpl 280 7138 0 902 446 0 446 446 0 8 0 anonpl 16 270956 0 252599 94 10 84 84 0 124 6 amapchunkpl 152 15362 0 15093 24 8 16 16 0 158 4 amappl16 192 13051 0 11802 63 0 63 63 0 8 0 amappl15 184 1697 0 1695 1 0 1 1 0 8 0 amappl14 176 15 0 11 1 0 1 1 0 8 0 amappl13 168 29 0 26 1 0 1 1 0 8 0 amappl12 160 20 0 16 1 0 1 1 0 8 0 amappl11 152 57 0 41 1 0 1 1 0 8 0 amappl10 144 1709 0 1704 1 0 1 1 0 8 0 amappl9 136 1969 0 1967 1 0 1 1 0 8 0 amappl8 128 2057 0 1976 3 0 3 3 0 8 0 amappl7 120 1811 0 1798 1 0 1 1 0 8 0 amappl6 112 34 0 27 1 0 1 1 0 8 0 amappl5 104 3468 0 3453 1 0 1 1 0 8 0 amappl4 96 494 0 467 1 0 1 1 0 8 0 amappl3 88 168 0 160 1 0 1 1 0 8 0 amappl2 80 27338 0 27270 2 0 2 2 0 8 0 amappl1 72 99674 0 99254 22 12 10 17 0 8 0 amappl 80 9436 0 8983 10 0 10 10 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 44 0 6 1 0 1 1 0 8 0 uaddrrnd 24 4851 0 3518 9 0 9 9 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 4851 0 3518 9 0 9 9 0 8 0 vmmpekpl 168 17100 0 17014 5 0 5 5 0 8 0 vmmpepl 168 443818 0 439163 231 16 215 215 0 357 3 vmsppl 368 4850 0 3518 122 0 122 122 0 8 0 pdppl 4096 9709 0 8354 171 1 170 170 0 8 0 pvpl 32 924568 0 903773 212 20 192 192 0 265 19 pmappl 232 4850 0 3518 80 1 79 79 0 8 0 extentpl 40 53 0 36 1 0 1 1 0 8 0 phpool 112 570 0 10 16 0 16 16 0 8 0 ddb{1}> machine ddbcpu 0 Stopped at x86_ipi_db+0x1a: addq $0x8,%rsp x86_ipi_db(ffffffff827a7ff0) 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 __mp_lock(ffffffff828d0690) at __mp_lock+0x127 __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff828d0690) at __mp_lock+0x127 sys/kern/kern_lock.c:147 if_qstart_compat(ffff80000017c538) at if_qstart_compat+0x1a sys/net/if.c:675 ifq_serialize(ffff80000017c538,ffff80000017c658) at ifq_serialize+0x173 sys/net/ifq.c:113 taskq_thread(ffff80000002c000) at taskq_thread+0xfa sys/kern/kern_task.c:449 end trace frame: 0x0, count: 8 ddb{0}> trace x86_ipi_db(ffffffff827a7ff0) 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 __mp_lock(ffffffff828d0690) at __mp_lock+0x127 __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff828d0690) at __mp_lock+0x127 sys/kern/kern_lock.c:147 if_qstart_compat(ffff80000017c538) at if_qstart_compat+0x1a sys/net/if.c:675 ifq_serialize(ffff80000017c538,ffff80000017c658) at ifq_serialize+0x173 sys/net/ifq.c:113 taskq_thread(ffff80000002c000) at taskq_thread+0xfa sys/kern/kern_task.c:449 end trace frame: 0x0, count: -7 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(ffffffff82407a62) at panic+0x164 sys/kern/subr_prf.c:218 pool_cache_get(ffffffff828c6318) at pool_cache_get+0x323 pool_cache_item_magic_check sys/kern/subr_pool.c:1781 [inline] pool_cache_get(ffffffff828c6318) at pool_cache_get+0x323 sys/kern/subr_pool.c:1884 pool_get(ffffffff828c6318,2) at pool_get+0x91 sys/kern/subr_pool.c:572 m_gethdr(2,2) at m_gethdr+0x4c sys/kern/uipc_mbuf.c:283 tcp_output(ffff800000adb030) at tcp_output+0x14e6 tcp_usrreq(fffffd806eaf8c88,9,fffffd806d33c200,0,0,ffff8000ffffeee0) at tcp_usrreq+0xa55 sosend(fffffd806eaf8c88,0,ffff800020e24788,0,0,80) at sosend+0x671 sys/kern/uipc_socket.c:555 dofilewritev(ffff8000ffffeee0,4,ffff800020e24788,0,ffff800020e24870) at dofilewritev+0x1b6 sys/kern/sys_generic.c:365 sys_write(ffff8000ffffeee0,ffff800020e24820,ffff800020e24870) at sys_write+0x83 sys/kern/sys_generic.c:285 syscall(ffff800020e248f0) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800020e248f0) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffd9200, count: 3 ddb{1}> trace db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:398 panic(ffffffff82407a62) at panic+0x164 sys/kern/subr_prf.c:218 pool_cache_get(ffffffff828c6318) at pool_cache_get+0x323 pool_cache_item_magic_check sys/kern/subr_pool.c:1781 [inline] pool_cache_get(ffffffff828c6318) at pool_cache_get+0x323 sys/kern/subr_pool.c:1884 pool_get(ffffffff828c6318,2) at pool_get+0x91 sys/kern/subr_pool.c:572 m_gethdr(2,2) at m_gethdr+0x4c sys/kern/uipc_mbuf.c:283 tcp_output(ffff800000adb030) at tcp_output+0x14e6 tcp_usrreq(fffffd806eaf8c88,9,fffffd806d33c200,0,0,ffff8000ffffeee0) at tcp_usrreq+0xa55 sosend(fffffd806eaf8c88,0,ffff800020e24788,0,0,80) at sosend+0x671 sys/kern/uipc_socket.c:555 dofilewritev(ffff8000ffffeee0,4,ffff800020e24788,0,ffff800020e24870) at dofilewritev+0x1b6 sys/kern/sys_generic.c:365 sys_write(ffff8000ffffeee0,ffff800020e24820,ffff800020e24870) at sys_write+0x83 sys/kern/sys_generic.c:285 syscall(ffff800020e248f0) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800020e248f0) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffd9200, count: -12