login: panic: tcp_output: template len != hdrlen - optlen
Stopped at db_enter+0x18: addq $0x8,%rsp
TID PID UID PRFLAGS PFLAGS CPU COMMAND
* 10366 67962 0 0x12 0 1 sshd
212603 90596 0 0x14000 0x200 0 reaper
db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:398
panic(ffffffff82420d55) at panic+0x164 sys/kern/subr_prf.c:218
tcp_output(ffff800000ad7660) at tcp_output+0x2c4b tcp_setpersist sys/netinet/tcp_output.c:1130 [inline]
tcp_output(ffff800000ad7660) at tcp_output+0x2c4b sys/netinet/tcp_output.c:333
tcp_usrreq(fffffd806eaefaf8,9,fffffd806f300600,0,0,ffff800020e4d760) at tcp_usrreq+0xa55
sosend(fffffd806eaefaf8,0,ffff800020e24628,0,0,80) at sosend+0x671 sys/kern/uipc_socket.c:555
dofilewritev(ffff800020e4d760,4,ffff800020e24628,0,ffff800020e24710) at dofilewritev+0x1b6 sys/kern/sys_generic.c:365
sys_write(ffff800020e4d760,ffff800020e246c0,ffff800020e24710) at sys_write+0x83 sys/kern/sys_generic.c:285
syscall(ffff800020e24790) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline]
syscall(ffff800020e24790) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x7f7ffffde890, count: 6
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
tcp_output: template len != hdrlen - optlen
ddb{1}> trace
db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:398
panic(ffffffff82420d55) at panic+0x164 sys/kern/subr_prf.c:218
tcp_output(ffff800000ad7660) at tcp_output+0x2c4b tcp_setpersist sys/netinet/tcp_output.c:1130 [inline]
tcp_output(ffff800000ad7660) at tcp_output+0x2c4b sys/netinet/tcp_output.c:333
tcp_usrreq(fffffd806eaefaf8,9,fffffd806f300600,0,0,ffff800020e4d760) at tcp_usrreq+0xa55
sosend(fffffd806eaefaf8,0,ffff800020e24628,0,0,80) at sosend+0x671 sys/kern/uipc_socket.c:555
dofilewritev(ffff800020e4d760,4,ffff800020e24628,0,ffff800020e24710) at dofilewritev+0x1b6 sys/kern/sys_generic.c:365
sys_write(ffff800020e4d760,ffff800020e246c0,ffff800020e24710) at sys_write+0x83 sys/kern/sys_generic.c:285
syscall(ffff800020e24790) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline]
syscall(ffff800020e24790) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x7f7ffffde890, count: -9
ddb{1}> show registers
rdi 0
rsi 0x1
rbp 0xffff800020e24190
rbx 0xffff800020e24240
rdx 0x8b
rcx 0x2
rax 0x1
r8 0xffff800020e24150
r9 0xffffffff81379bbf kprintf+0x16f
r10 0x1
r11 0x938c5896ecae81b8
r12 0x3000000008
r13 0xffff800020e241a0
r14 0x100
r15 0x1
rip 0xffffffff81f0e6b8 db_enter+0x18
cs 0x8
rflags 0x246
rsp 0xffff800020e24180
ss 0x10
db_enter+0x18: addq $0x8,%rsp
ddb{1}> show proc
PROC (sshd) pid=10366 stat=onproc
flags process=12<EXEC,SUGID,8ORPHAN> proc=0
pri=24, usrpri=50, nice=20
forw=0xffffffffffffffff, list=0xffff800020e4d4f0,0xffffffff82939488
process=0xffff8000ffffe018 user=0xffff800020e1f000, vmspace=0xfffffd806e90c178
estcpu=0, cpticks=0, pctcpu=0.2
user=0, sys=0, intr=0
ddb{1}> ps
PID TID PPID UID S FLAGS WAIT COMMAND
*67962 10366 10819 0 7 0x12 sshd
92576 235224 1 0 3 0x100083 ttyin getty
10819 468519 1 0 3 0x80 select sshd
26750 230977 7371 74 3 0x100092 bpf pflogd
7371 385585 1 0 3 0x80 netio pflogd
76632 392731 26914 73 3 0x100090 kqread syslogd
26914 260906 1 0 3 0x100082 netio syslogd
93600 293121 1 77 3 0x100090 poll dhclient
26945 357022 1 0 3 0x80 poll dhclient
99867 168516 0 0 3 0x14200 bored smr
67014 52184 0 0 2 0x14200 zerothread
82467 117947 0 0 3 0x14200 aiodoned aiodoned
58353 474114 0 0 3 0x14200 syncer update
95795 312711 0 0 3 0x14200 cleaner cleaner
90596 212603 0 0 7 0x14200 reaper
36201 479467 0 0 3 0x14200 pgdaemon pagedaemon
52430 322219 0 0 3 0x14200 bored crynlk
88964 30267 0 0 3 0x14200 bored crypto
10323 122136 0 0 3 0x40014200 acpi0 acpi0
62805 132639 0 0 3 0x40014200 idle1
78455 378727 0 0 3 0x14200 bored softnet
90538 81164 0 0 3 0x14200 bored systqmp
51259 107972 0 0 3 0x14200 bored systq
8758 226003 0 0 3 0x40014200 bored softclock
90262 189955 0 0 3 0x40014200 idle0
1 58984 0 0 3 0x82 wait init
0 0 -1 0 3 0x10200 scheduler swapper
ddb{1}> show all locks
CPU 0:
exclusive mutex &uvm.fpageqlock r = 0 (0xffffffff828eca20)
#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 uvm_pmr_freepages+0x126 sys/uvm/uvm_pmemrange.c:1254
#4 pmap_do_remove+0x68b sys/arch/amd64/amd64/pmap.c:1871
#5 uvm_map_teardown+0x195 uvm_map_addr_RBT_LEFT sys/uvm/uvm_map.h:176 [inline]
#5 uvm_map_teardown+0x195 sys/uvm/uvm_map.c:2739
#6 uvmspace_free+0x86 sys/uvm/uvm_map.c:3646
#7 uvm_exit+0x29 sys/uvm/uvm_glue.c:297
#8 reaper+0x189 sys/kern/kern_exit.c:456
#9 proc_trampoline+0x1c
Process 67962 (sshd) thread 0xffff800020e4d760 (10366)
exclusive rwlock netlock r = 0 (0xffffffff82716f68)
#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 9461 6392K 6394K 78643K 10557 0
pcb 13 8K 8K 78643K 13 0
rtable 61 2K 2K 78643K 167 0
ifaddr 29 8K 9K 78643K 39 0
counters 39 33K 33K 78643K 41 0
ioctlops 0 0K 4K 78643K 1468 0
mount 1 1K 1K 78643K 1 0
vnodes 1183 74K 75K 78643K 1188 0
UFS quota 1 32K 32K 78643K 1 0
UFS mount 5 36K 36K 78643K 5 0
shm 2 1K 1K 78643K 2 0
VM map 2 1K 1K 78643K 2 0
sem 2 0K 0K 78643K 2 0
dirhash 12 2K 2K 78643K 12 0
ACPI 1824 197K 290K 78643K 13058 0
file desc 1 0K 12K 78643K 18 0
proc 59 63K 83K 78643K 398 0
NFS srvsock 1 0K 0K 78643K 1 0
NFS daemon 1 16K 16K 78643K 1 0
in_multi 11 0K 1K 78643K 22 0
ether_multi 1 0K 0K 78643K 1 0
ISOFS mount 1 32K 32K 78643K 1 0
MSDOSFS mount 1 16K 16K 78643K 1 0
ttys 19 95K 95K 78643K 19 0
exec 0 0K 1K 78643K 197 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 56 2K 12K 78643K 954 0
UVM aobj 3 2K 2K 78643K 3 0
memdesc 1 4K 4K 78643K 1 0
crypto data 1 1K 1K 78643K 1 0
NDP 4 0K 0K 78643K 7 0
temp 24 3849K 3913K 78643K 1874 0
kqueue 2 2K 4K 78643K 3 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 4 0 2 1 0 1 1 0 8 0
plcache 128 20 0 0 1 0 1 1 0 8 0
rtpcb 80 17 0 15 1 0 1 1 0 8 0
rtentry 112 34 0 12 1 0 1 1 0 8 0
unpcb 120 29 0 19 1 0 1 1 0 8 0
syncache 264 5 0 5 2 1 1 1 0 8 1
tcpcb 544 8 0 5 1 0 1 1 0 8 0
inpcb 296 34 0 28 1 0 1 1 0 8 0
nd6 48 3 0 3 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
pfstitem 24 11 0 0 1 0 1 1 0 8 0
pfstkey 112 11 0 0 1 0 1 1 0 8 0
pfstate 328 11 0 0 1 0 1 1 0 8 0
pfrule 1360 21 0 16 2 1 1 2 0 8 0
art_heap8 4096 1 0 0 1 0 1 1 0 8 0
art_heap4 256 144 0 48 9 0 9 9 0 8 3
art_table 32 145 0 48 2 0 2 2 0 8 1
art_node 16 33 0 13 1 0 1 1 0 8 0
dirhash 1024 17 0 0 3 0 3 3 0 8 0
dino2pl 256 1422 0 27 88 0 88 88 0 8 0
ffsino 272 1422 0 27 94 0 94 94 0 8 0
nchpl 144 1644 0 59 61 1 60 60 0 8 0
uvmvnodes 72 1432 0 0 27 0 27 27 0 8 0
vnodes 208 1432 0 0 76 0 76 76 0 8 0
namei 1024 4245 0 4245 2 1 1 1 0 8 1
percpumem 16 31 0 1 1 0 1 1 0 8 0
scxspl 192 4564 0 4564 8 1 7 7 0 8 7
plimitpl 152 15 0 9 1 0 1 1 0 8 0
sigapl 424 241 0 215 4 0 4 4 0 8 0
knotepl 112 48 0 43 1 0 1 1 0 8 0
kqueuepl 144 2 0 1 1 0 1 1 0 8 0
pipepl 304 78 0 77 2 1 1 1 0 8 0
fdescpl 496 226 0 215 3 0 3 3 0 8 0
filepl 152 1119 0 1076 3 0 3 3 0 8 1
lockfpl 104 5 0 4 1 0 1 1 0 8 0
lockfspl 48 3 0 2 1 0 1 1 0 8 0
sessionpl 112 19 0 10 1 0 1 1 0 8 0
pgrppl 48 19 0 10 1 0 1 1 0 8 0
ucredpl 96 62 0 53 1 0 1 1 0 8 0
zombiepl 144 215 0 214 2 1 1 1 0 8 0
processpl 992 241 0 214 5 0 5 5 0 8 1
procpl 624 247 0 220 3 0 3 3 0 8 0
sockpl 400 80 0 62 2 0 2 2 0 8 0
mcl4k 4096 3 0 0 1 0 1 1 0 8 0
mcl2k 2048 76 0 0 10 0 10 10 0 8 0
mtagpl 96 1 0 0 1 0 1 1 0 8 0
mbufpl 256 141 0 0 8 0 8 8 0 8 0
bufpl 280 2987 0 126 205 0 205 205 0 8 0
anonpl 16 22170 0 21010 14 2 12 12 0 124 5
amapchunkpl 152 883 0 847 5 0 5 5 0 158 3
amappl16 192 155 0 151 2 0 2 2 0 8 1
amappl15 184 1 0 0 1 0 1 1 0 8 0
amappl14 176 3 0 3 1 0 1 1 0 8 1
amappl13 168 24 0 24 2 1 1 1 0 8 1
amappl12 160 23 0 21 1 0 1 1 0 8 0
amappl11 152 50 0 35 1 0 1 1 0 8 0
amappl10 144 20 0 18 1 0 1 1 0 8 0
amappl9 136 206 0 205 1 0 1 1 0 8 0
amappl8 128 280 0 279 1 0 1 1 0 8 0
amappl7 120 113 0 107 1 0 1 1 0 8 0
amappl6 112 32 0 30 1 0 1 1 0 8 0
amappl5 104 134 0 120 1 0 1 1 0 8 0
amappl4 96 491 0 465 1 0 1 1 0 8 0
amappl3 88 127 0 119 1 0 1 1 0 8 0
amappl2 80 904 0 855 3 1 2 2 0 8 0
amappl1 72 15185 0 14817 23 5 18 18 0 8 8
amappl 80 477 0 458 1 0 1 1 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 2 0 0 1 0 1 1 0 8 0
uaddrrnd 24 226 0 215 1 0 1 1 0 8 0
uaddrbest 32 2 0 0 1 0 1 1 0 8 0
uaddr 24 226 0 215 1 0 1 1 0 8 0
vmmpekpl 168 6448 0 6425 2 0 2 2 0 8 0
vmmpepl 168 32927 0 32175 82 9 73 73 0 357 32
vmsppl 368 225 0 215 2 0 2 2 0 8 0
pdppl 4096 459 0 430 6 0 6 6 0 8 1
pvpl 32 113185 0 110380 109 5 104 104 0 265 77
pmappl 232 225 0 215 1 0 1 1 0 8 0
extentpl 40 53 0 36 1 0 1 1 0 8 0
phpool 112 234 0 4 7 0 7 7 0 8 0
ddb{1}> machine ddbcpu 0
Stopped at x86_ipi_db+0x1a: addq $0x8,%rsp
x86_ipi_db(ffffffff82752ff0) 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
__sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x5f sys/dev/kcov.c:86
mtx_enter(ffffffff82797820) at mtx_enter+0x4b sys/kern/kern_lock.c:266
msleep(ffffffff828b71e8,ffffffff82797820,4,ffffffff824aaf2d,0) at msleep+0x242
reaper(ffff800020d89380) at reaper+0xcb sys/kern/kern_exit.c:427
end trace frame: 0x0, count: 8
ddb{0}> trace
x86_ipi_db(ffffffff82752ff0) 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
__sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x5f sys/dev/kcov.c:86
mtx_enter(ffffffff82797820) at mtx_enter+0x4b sys/kern/kern_lock.c:266
msleep(ffffffff828b71e8,ffffffff82797820,4,ffffffff824aaf2d,0) at msleep+0x242
reaper(ffff800020d89380) at reaper+0xcb sys/kern/kern_exit.c:427
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(ffffffff82420d55) at panic+0x164 sys/kern/subr_prf.c:218
tcp_output(ffff800000ad7660) at tcp_output+0x2c4b tcp_setpersist sys/netinet/tcp_output.c:1130 [inline]
tcp_output(ffff800000ad7660) at tcp_output+0x2c4b sys/netinet/tcp_output.c:333
tcp_usrreq(fffffd806eaefaf8,9,fffffd806f300600,0,0,ffff800020e4d760) at tcp_usrreq+0xa55
sosend(fffffd806eaefaf8,0,ffff800020e24628,0,0,80) at sosend+0x671 sys/kern/uipc_socket.c:555
dofilewritev(ffff800020e4d760,4,ffff800020e24628,0,ffff800020e24710) at dofilewritev+0x1b6 sys/kern/sys_generic.c:365
sys_write(ffff800020e4d760,ffff800020e246c0,ffff800020e24710) at sys_write+0x83 sys/kern/sys_generic.c:285
syscall(ffff800020e24790) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline]
syscall(ffff800020e24790) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x7f7ffffde890, count: 6
ddb{1}> trace
db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:398
panic(ffffffff82420d55) at panic+0x164 sys/kern/subr_prf.c:218
tcp_output(ffff800000ad7660) at tcp_output+0x2c4b tcp_setpersist sys/netinet/tcp_output.c:1130 [inline]
tcp_output(ffff800000ad7660) at tcp_output+0x2c4b sys/netinet/tcp_output.c:333
tcp_usrreq(fffffd806eaefaf8,9,fffffd806f300600,0,0,ffff800020e4d760) at tcp_usrreq+0xa55
sosend(fffffd806eaefaf8,0,ffff800020e24628,0,0,80) at sosend+0x671 sys/kern/uipc_socket.c:555
dofilewritev(ffff800020e4d760,4,ffff800020e24628,0,ffff800020e24710) at dofilewritev+0x1b6 sys/kern/sys_generic.c:365
sys_write(ffff800020e4d760,ffff800020e246c0,ffff800020e24710) at sys_write+0x83 sys/kern/sys_generic.c:285
syscall(ffff800020e24790) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline]
syscall(ffff800020e24790) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x7f7ffffde890, count: -9
ddb{1}>