panic(ffffffff8227401c) at panic+0x15c sys/kern/subr_prf.c:207 pool_do_get(ffffffff8265eb38,2,ffff8000227c37d8) at pool_do_get+0x439 sys/kern/subr_pool.c:738 pool_get(ffffffff8265eb38,2) at pool_get+0xeb sys/kern/subr_pool.c:581 m_copym(fffffd806d805b00,cc,66,2) at m_copym+0x174 m_get sys/kern/uipc_mbuf.c:250 [inline] m_copym(fffffd806d805b00,cc,66,2) at m_copym+0x174 sys/kern/uipc_mbuf.c:667 tcp_output(ffff800000a0b540) at tcp_output+0x15ba sys/netinet/tcp_output.c:673 tcp_usrreq(fffffd807de41008,e,fffffd8068a2cd00,fffffd80650e1900,0,ffff800020ec6c48) at tcp_usrreq+0x629 sys/netinet/tcp_usrreq.c:373 sosend(fffffd807de41008,fffffd80650e1900,ffff8000227c3c00,0,0,403) at sosend+0x671 sys/kern/uipc_socket.c:549 sendit(ffff800020ec6c48,6,ffff8000227c3ce0,403,ffff8000227c3dc0) at sendit+0x52b sys/kern/uipc_syscalls.c:657 sys_sendto(ffff800020ec6c48,ffff8000227c3d78,ffff8000227c3dc0) at sys_sendto+0x80 sys/kern/uipc_syscalls.c:522 syscall(ffff8000227c3e40) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff8000227c3e40) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x6c556918210, 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{0}> ddb{0}> set $lines = 0 ddb{0}> set $maxwidth = 0 ddb{0}> show panic pool_do_get: mbufpl free list modified: page 0xfffffd806d831000; item addr 0xfffffd806d831500; offset 0x0=0x2507620000000000 != 0x250762b159786a9f ddb{0}> trace db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:398 panic(ffffffff8227401c) at panic+0x15c sys/kern/subr_prf.c:207 pool_do_get(ffffffff8265eb38,2,ffff8000227c37d8) at pool_do_get+0x439 sys/kern/subr_pool.c:738 pool_get(ffffffff8265eb38,2) at pool_get+0xeb sys/kern/subr_pool.c:581 m_copym(fffffd806d805b00,cc,66,2) at m_copym+0x174 m_get sys/kern/uipc_mbuf.c:250 [inline] m_copym(fffffd806d805b00,cc,66,2) at m_copym+0x174 sys/kern/uipc_mbuf.c:667 tcp_output(ffff800000a0b540) at tcp_output+0x15ba sys/netinet/tcp_output.c:673 tcp_usrreq(fffffd807de41008,e,fffffd8068a2cd00,fffffd80650e1900,0,ffff800020ec6c48) at tcp_usrreq+0x629 sys/netinet/tcp_usrreq.c:373 sosend(fffffd807de41008,fffffd80650e1900,ffff8000227c3c00,0,0,403) at sosend+0x671 sys/kern/uipc_socket.c:549 sendit(ffff800020ec6c48,6,ffff8000227c3ce0,403,ffff8000227c3dc0) at sendit+0x52b sys/kern/uipc_syscalls.c:657 sys_sendto(ffff800020ec6c48,ffff8000227c3d78,ffff8000227c3dc0) at sys_sendto+0x80 sys/kern/uipc_syscalls.c:522 syscall(ffff8000227c3e40) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff8000227c3e40) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x6c556918210, count: -12 ddb{0}> show registers rdi 0 rsi 0x1 rbp 0xffff8000227c3620 rbx 0xffff8000227c36d0 rdx 0x8b rcx 0x2 rax 0x1 r8 0xffffffff811b7d2f kprintf+0x16f r9 0x1 r10 0x2 r11 0xb1cda922ae409211 r12 0x3000000008 r13 0xffff8000227c3630 r14 0x100 r15 0x1 rip 0xffffffff81e2d538 db_enter+0x18 cs 0x8 rflags 0x246 rsp 0xffff8000227c3610 ss 0x10 db_enter+0x18: addq $0x8,%rsp ddb{0}> show proc PROC (syz-executor.1) pid=60952 stat=onproc flags process=0 proc=4000000 pri=32, usrpri=78, nice=20 forw=0xffffffffffffffff, list=0xffff800020ec7878,0xffffffff82685730 process=0xffff800020e93730 user=0xffff8000227be000, vmspace=0xfffffd80666cc5d0 estcpu=28, cpticks=3, pctcpu=0.0 user=0, sys=3, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 71658 44858 35798 0 2 0 syz-executor.1 *71658 60952 35798 0 7 0x4000000 syz-executor.1 93494 357069 6028 0 2 0 syz-executor.0 93494 219810 6028 0 2 0x4000000 syz-executor.0 6028 295853 93342 0 3 0x82 nanosleep syz-executor.0 35798 443494 93342 0 3 0x82 nanosleep syz-executor.1 51511 279805 1 0 3 0x100083 ttyin getty 81051 101474 0 0 3 0x14200 bored sosplice 93342 162380 49985 0 3 0x82 thrsleep syz-fuzzer 93342 1072 49985 0 3 0x4000082 nanosleep syz-fuzzer 93342 239166 49985 0 3 0x4000082 thrsleep syz-fuzzer 93342 128434 49985 0 3 0x4000082 thrsleep syz-fuzzer 93342 398753 49985 0 3 0x4000082 thrsleep syz-fuzzer 93342 330725 49985 0 3 0x4000082 thrsleep syz-fuzzer 93342 10877 49985 0 3 0x4000082 thrsleep syz-fuzzer 93342 3350 49985 0 3 0x4000082 thrsleep syz-fuzzer 93342 40265 49985 0 3 0x4000082 kqread syz-fuzzer 93342 411755 49985 0 3 0x4000082 thrsleep syz-fuzzer 49985 266669 96800 0 3 0x10008a pause ksh 96800 223282 83147 0 3 0x92 select sshd 83147 7282 1 0 3 0x80 select sshd 19226 420487 16625 74 3 0x100092 bpf pflogd 16625 447738 1 0 3 0x80 netio pflogd 37529 500420 96081 73 3 0x100090 kqread syslogd 96081 325577 1 0 3 0x100082 netio syslogd 24919 294380 1 77 3 0x100090 poll dhclient 17602 225985 1 0 3 0x80 poll dhclient 76064 12605 0 0 3 0x14200 bored smr 34456 34176 0 0 2 0x14200 zerothread 25473 154600 0 0 3 0x14200 aiodoned aiodoned 8204 518037 0 0 3 0x14200 syncer update 45327 41100 0 0 3 0x14200 cleaner cleaner 11191 230421 0 0 3 0x14200 reaper reaper 60196 231962 0 0 3 0x14200 pgdaemon pagedaemon 29145 500211 0 0 3 0x14200 bored crynlk 99251 171818 0 0 3 0x14200 bored crypto 28490 520320 0 0 3 0x40014200 acpi0 acpi0 79175 282593 0 0 3 0x40014200 idle1 46191 375050 0 0 7 0x14200 softnet 73563 344178 0 0 3 0x14200 bored systqmp 50433 493256 0 0 3 0x14200 bored systq 87415 468506 0 0 3 0x40014200 bored softclock 40230 124002 0 0 3 0x40014200 idle0 1 338603 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks CPU 0: exclusive mutex mbufpl r = 0 (0xffffffff8265eb48) #0 witness_lock+0x4c7 stacktrace_save sys/sys/stacktrace.h:36 [inline] #0 witness_lock+0x4c7 sys/kern/subr_witness.c:1164 #1 mtx_enter_try+0x102 #2 mtx_enter+0x4b sys/kern/kern_lock.c:266 #3 pool_get+0xbf sys/kern/subr_pool.c:578 #4 m_copym+0x174 m_get sys/kern/uipc_mbuf.c:250 [inline] #4 m_copym+0x174 sys/kern/uipc_mbuf.c:667 #5 tcp_output+0x15ba sys/netinet/tcp_output.c:673 #6 tcp_usrreq+0x629 sys/netinet/tcp_usrreq.c:373 #7 sosend+0x671 sys/kern/uipc_socket.c:549 #8 sendit+0x52b sys/kern/uipc_syscalls.c:657 #9 sys_sendto+0x80 sys/kern/uipc_syscalls.c:522 #10 syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] #10 syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 #11 Xsyscall+0x128 Process 71658 (syz-executor.1) thread 0xffff800020ec6c48 (60952) exclusive rwlock netlock r = 0 (0xffffffff824efd38) #0 witness_lock+0x4c7 stacktrace_save sys/sys/stacktrace.h:36 [inline] #0 witness_lock+0x4c7 sys/kern/subr_witness.c:1164 #1 rw_enter+0x453 sys/kern/kern_rwlock.c:311 #2 solock+0x5a sys/kern/uipc_socket2.c:282 #3 sosend+0x559 sys/kern/uipc_socket.c:537 #4 sendit+0x52b sys/kern/uipc_syscalls.c:657 #5 sys_sendto+0x80 sys/kern/uipc_syscalls.c:522 #6 syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] #6 syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 #7 Xsyscall+0x128 exclusive mutex mbufpl r = 0 (0xffffffff8265eb48) #0 witness_lock+0x4c7 stacktrace_save sys/sys/stacktrace.h:36 [inline] #0 witness_lock+0x4c7 sys/kern/subr_witness.c:1164 #1 mtx_enter_try+0x102 #2 mtx_enter+0x4b sys/kern/kern_lock.c:266 #3 pool_get+0xbf sys/kern/subr_pool.c:578 #4 m_copym+0x174 m_get sys/kern/uipc_mbuf.c:250 [inline] #4 m_copym+0x174 sys/kern/uipc_mbuf.c:667 #5 tcp_output+0x15ba sys/netinet/tcp_output.c:673 #6 tcp_usrreq+0x629 sys/netinet/tcp_usrreq.c:373 #7 sosend+0x671 sys/kern/uipc_socket.c:549 #8 sendit+0x52b sys/kern/uipc_syscalls.c:657 #9 sys_sendto+0x80 sys/kern/uipc_syscalls.c:522 #10 syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] #10 syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 #11 Xsyscall+0x128 Process 46191 (softnet) thread 0xffff800020e184e0 (375050) shared rwlock softnet r = 0 (0xffff80000002b0e0) #0 witness_lock+0x4c7 stacktrace_save sys/sys/stacktrace.h:36 [inline] #0 witness_lock+0x4c7 sys/kern/subr_witness.c:1164 #1 taskq_thread+0x8f sys/kern/kern_task.c:368 #2 proc_trampoline+0x1c ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 9549 6444K 7074K 78643K 12564 0 pcb 13 8K 8K 78643K 222 0 rtable 109 4K 4K 78643K 638 0 ifaddr 94 17K 18K 78643K 258 0 counters 43 33K 34K 78643K 93 0 ioctlops 0 0K 4K 78643K 1525 0 iov 0 0K 32K 78643K 153 0 mount 1 1K 1K 78643K 1 0 vnodes 1223 77K 77K 78643K 1874 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 5K 78643K 17 0 VM map 2 1K 1K 78643K 2 0 sem 12 1K 1K 78643K 87 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1824 197K 290K 78643K 13058 0 file desc 6 17K 25K 78643K 1016 0 sigio 0 0K 0K 78643K 11 0 proc 62 63K 95K 78643K 716 0 subproc 32 2K 2K 78643K 102 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 0 0K 0K 78643K 98 0 in_multi 90 4K 5K 78643K 258 0 ether_multi 1 0K 0K 78643K 40 0 mrt 0 0K 0K 78643K 8 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 1K 78643K 305 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 151 129K 129K 78643K 4344 0 UVM aobj 38 6K 6K 78643K 42 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 179 0 NDP 16 0K 0K 78643K 59 0 temp 148 3047K 3119K 78643K 25615 0 kqueue 3 4K 14K 78643K 56 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 17 0 13 1 0 1 1 0 8 0 plcache 128 20 0 0 1 0 1 1 0 8 0 rtpcb 80 630 0 628 1 0 1 1 0 8 0 rtentry 112 130 0 87 2 0 2 2 0 8 0 unpcb 120 668 0 658 2 1 1 2 0 8 0 syncache 264 11 0 11 3 2 1 1 0 8 1 tcpcb 544 404 0 397 1 0 1 1 0 8 0 inpcb 280 1128 0 1118 6 5 1 2 0 8 0 rttmr 72 2 0 2 2 2 0 1 0 8 0 nd6 48 27 0 19 1 0 1 1 0 8 0 swfcl 56 1 0 0 1 0 1 1 0 8 0 ppxss 1128 3 0 3 3 2 1 1 0 8 1 pffrag 232 6 0 6 3 3 0 1 0 482 0 pffrnode 88 6 0 6 3 3 0 1 0 8 0 pffrent 40 98 0 98 3 3 0 1 0 8 0 pfosfp 40 846 0 423 5 0 5 5 0 8 0 pfosfpen 112 1428 0 714 21 0 21 21 0 8 0 pfstitem 24 111 0 64 1 0 1 1 0 8 0 pfstkey 112 111 0 64 2 0 2 2 0 8 0 pfstate 328 111 0 64 6 0 6 6 0 8 0 pfrule 1360 21 0 16 2 1 1 2 0 8 0 art_heap8 4096 2 0 0 2 0 2 2 0 8 0 art_heap4 256 604 0 376 20 5 15 15 0 8 0 art_table 32 606 0 376 2 0 2 2 0 8 0 art_node 16 129 0 90 1 0 1 1 0 8 0 sysvmsgpl 40 37 0 29 1 0 1 1 0 8 0 semupl 112 5 0 5 2 2 0 1 0 8 0 semapl 112 72 0 62 1 0 1 1 0 8 0 shmpl 112 40 0 4 2 0 2 2 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 2909 0 1505 89 0 89 89 0 8 0 ffsino 272 2909 0 1505 95 1 94 95 0 8 0 nchpl 144 4561 0 2971 60 0 60 60 0 8 0 uvmvnodes 72 3459 0 0 63 0 63 63 0 8 0 vnodes 208 3459 0 0 183 0 183 183 0 8 0 namei 1024 13288 0 13288 5 4 1 1 0 8 1 percpumem 16 57 0 25 1 0 1 1 0 8 0 vcpupl 1984 13 0 0 2 0 2 2 0 8 0 vmpool 560 16 0 3 1 0 1 1 0 8 0 scxspl 192 13491 0 13491 14 13 1 7 0 8 1 plimitpl 152 87 0 79 1 0 1 1 0 8 0 sigapl 424 1223 0 1190 4 0 4 4 0 8 0 futexpl 56 14540 0 14540 5 4 1 1 0 8 1 knotepl 112 169 0 150 1 0 1 1 0 8 0 kqueuepl 144 154 0 149 1 0 1 1 0 8 0 pipelkpl 48 228 0 218 1 0 1 1 0 8 0 pipepl 120 456 0 437 2 0 2 2 0 8 1 fdescpl 496 1205 0 1188 3 0 3 3 0 8 0 filepl 152 7806 0 7702 9 2 7 7 0 8 3 lockfpl 104 228 0 227 1 0 1 1 0 8 0 lockfspl 48 85 0 84 1 0 1 1 0 8 0 sessionpl 112 23 0 12 1 0 1 1 0 8 0 pgrppl 48 31 0 20 1 0 1 1 0 8 0 ucredpl 96 742 0 733 1 0 1 1 0 8 0 zombiepl 144 1190 0 1190 1 0 1 1 0 8 1 processpl 984 1223 0 1190 5 0 5 5 0 8 0 procpl 624 3326 0 3282 4 0 4 4 0 8 0 sosppl 128 15 0 15 3 3 0 1 0 8 0 sockpl 400 2432 0 2410 15 11 4 6 0 8 1 mcl64k 65536 17 0 0 3 0 3 3 0 8 0 mcl16k 16384 2 0 0 1 0 1 1 0 8 0 mcl12k 12288 8 0 0 1 0 1 1 0 8 0 mcl9k 9216 5 0 0 1 0 1 1 0 8 0 mcl8k 8192 7 0 0 1 0 1 1 0 8 0 mcl4k 4096 7 0 0 1 0 1 1 0 8 0 mcl2k2 2112 1 0 0 1 0 1 1 0 8 0 mcl2k 2048 176 0 0 21 0 21 21 0 8 2 mtagpl 80 81 0 0 2 0 2 2 0 8 0 mbufpl 256 454 0 0 25 0 25 25 0 8 0 mbufpl: pool(0xffffffff8265eb38:mbufpl): free list modified: page 0xfffffd806d831000; item ordinal 0; addr 0xfffffd806d831500 (p 0xfffffd806dc52000); offset 0x0=0x2507620000000000 bufpl 280 5312 0 148 369 0 369 369 0 8 0 anonpl 16 126355 0 111925 90 25 65 73 0 124 5 amapchunkpl 152 8262 0 8133 27 16 11 19 0 158 4 amappl16 192 5298 0 4495 69 28 41 52 0 8 0 amappl15 184 442 0 439 1 0 1 1 0 8 0 amappl14 176 36 0 28 1 0 1 1 0 8 0 amappl13 168 51 0 49 1 0 1 1 0 8 0 amappl12 160 346 0 340 2 1 1 1 0 8 0 amappl11 152 405 0 390 1 0 1 1 0 8 0 amappl10 144 138 0 133 1 0 1 1 0 8 0 amappl9 136 422 0 419 1 0 1 1 0 8 0 amappl8 128 514 0 472 2 0 2 2 0 8 0 amappl7 120 263 0 248 1 0 1 1 0 8 0 amappl6 112 358 0 350 1 0 1 1 0 8 0 amappl5 104 1095 0 1076 1 0 1 1 0 8 0 amappl4 96 572 0 531 2 0 2 2 0 8 1 amappl3 88 129 0 122 1 0 1 1 0 8 0 amappl2 80 8863 0 8783 2 0 2 2 0 8 0 amappl1 72 35909 0 35457 23 13 10 18 0 8 0 amappl 80 3659 0 3608 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 41 0 4 1 0 1 1 0 8 0 uaddrrnd 24 1221 0 1191 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 1221 0 1191 1 0 1 1 0 8 0 vmmpekpl 168 12737 0 12707 2 0 2 2 0 8 0 vmmpepl 168 155243 0 153142 183 65 118 118 0 357 25 vmsppl 368 1220 0 1191 3 0 3 3 0 8 0 pdppl 4096 2450 0 2395 9 2 7 7 0 8 0 pvpl 32 385548 0 367894 211 52 159 175 0 265 14 pmappl 232 1220 0 1191 3 1 2 2 0 8 0 extentpl 40 53 0 36 1 0 1 1 0 8 0 phpool 112 302 0 26 8 0 8 8 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 panic(ffffffff8227401c) at panic+0x15c sys/kern/subr_prf.c:207 pool_do_get(ffffffff8265eb38,2,ffff8000227c37d8) at pool_do_get+0x439 sys/kern/subr_pool.c:738 pool_get(ffffffff8265eb38,2) at pool_get+0xeb sys/kern/subr_pool.c:581 m_copym(fffffd806d805b00,cc,66,2) at m_copym+0x174 m_get sys/kern/uipc_mbuf.c:250 [inline] m_copym(fffffd806d805b00,cc,66,2) at m_copym+0x174 sys/kern/uipc_mbuf.c:667 tcp_output(ffff800000a0b540) at tcp_output+0x15ba sys/netinet/tcp_output.c:673 tcp_usrreq(fffffd807de41008,e,fffffd8068a2cd00,fffffd80650e1900,0,ffff800020ec6c48) at tcp_usrreq+0x629 sys/netinet/tcp_usrreq.c:373 sosend(fffffd807de41008,fffffd80650e1900,ffff8000227c3c00,0,0,403) at sosend+0x671 sys/kern/uipc_socket.c:549 sendit(ffff800020ec6c48,6,ffff8000227c3ce0,403,ffff8000227c3dc0) at sendit+0x52b sys/kern/uipc_syscalls.c:657 sys_sendto(ffff800020ec6c48,ffff8000227c3d78,ffff8000227c3dc0) at sys_sendto+0x80 sys/kern/uipc_syscalls.c:522 syscall(ffff8000227c3e40) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff8000227c3e40) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x6c556918210, count: -12 ddb{0}> machine ddbcpu 1 Stopped at x86_ipi_db+0x1a: addq $0x8,%rsp x86_ipi_db(ffff800020e00ff0) 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 x86_bus_space_io_read_1(3f8,5) at x86_bus_space_io_read_1+0x3c sys/arch/amd64/amd64/bus_space.c:639 comcnputc(800,d) at comcnputc+0x1c8 sys/dev/ic/com.c:1260 kputchar(a,5,0) at kputchar+0x219 sys/kern/subr_prf.c:343 kprintf() at kprintf+0x15c sys/kern/subr_prf.c:700 printf(ffffffff82254e6e) at printf+0x74 sys/kern/subr_prf.c:506 panic(ffffffff8227401c) at panic+0x129 sys/kern/subr_prf.c:202 pool_do_get(ffffffff8265eb38,2,ffff800020e39138) at pool_do_get+0x439 sys/kern/subr_pool.c:738 pool_get(ffffffff8265eb38,2) at pool_get+0xeb sys/kern/subr_pool.c:581 m_gethdr(2,2) at m_gethdr+0x4c sys/kern/uipc_mbuf.c:283 tcp_output(ffff800000a0b540) at tcp_output+0x14e6 tcp_input(ffff800020e396b8,ffff800020e396c4,6,2) at tcp_input+0x2356 end trace frame: 0xffff800020e39570, count: 0 ddb{1}> trace x86_ipi_db(ffff800020e00ff0) 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 x86_bus_space_io_read_1(3f8,5) at x86_bus_space_io_read_1+0x3c sys/arch/amd64/amd64/bus_space.c:639 comcnputc(800,d) at comcnputc+0x1c8 sys/dev/ic/com.c:1260 kputchar(a,5,0) at kputchar+0x219 sys/kern/subr_prf.c:343 kprintf() at kprintf+0x15c sys/kern/subr_prf.c:700 printf(ffffffff82254e6e) at printf+0x74 sys/kern/subr_prf.c:506 panic(ffffffff8227401c) at panic+0x129 sys/kern/subr_prf.c:202 pool_do_get(ffffffff8265eb38,2,ffff800020e39138) at pool_do_get+0x439 sys/kern/subr_pool.c:738 pool_get(ffffffff8265eb38,2) at pool_get+0xeb sys/kern/subr_pool.c:581 m_gethdr(2,2) at m_gethdr+0x4c sys/kern/uipc_mbuf.c:283 tcp_output(ffff800000a0b540) at tcp_output+0x14e6 tcp_input(ffff800020e396b8,ffff800020e396c4,6,2) at tcp_input+0x2356 ip_deliver(ffff800020e396b8,ffff800020e396c4,6,2) at ip_deliver+0x353 sys/netinet/ip_input.c:668 ip_ours(ffff800020e396b8,ffff800020e396c4,8b,0) at ip_ours+0x412 ip_input_if(ffff800020e396b8,ffff800020e396c4,4,0,ffff80000067a800) at ip_input_if+0x6ce ipv4_input(ffff80000067a800,fffffd8068a2ce00) at ipv4_input+0x48 sys/netinet/ip_input.c:215 if_input_local(ffff80000067a800,fffffd8068a2ce00,2) at if_input_local+0xf9 sys/net/if.c:776 loinput(ffff80000067a800,fffffd8068a2ce00,0) at loinput+0x4f sys/net/if_loop.c:239 if_input_process(ffff80000067a800,ffff800020e39828) at if_input_process+0xfb if_ih_input sys/net/if.c:909 [inline] if_input_process(ffff80000067a800,ffff800020e39828) at if_input_process+0xfb sys/net/if.c:943 ifiq_process(ffff80000067abf8) at ifiq_process+0x80 sys/net/ifq.c:646 taskq_thread(ffff80000002b080) at taskq_thread+0x9c sys/kern/kern_task.c:369 end trace frame: 0x0, count: -23