Date: Tue, 15 May 2018 14:22:41 -0400 From: Mike Tancsa <mike@sentex.net> To: FreeBSD-STABLE Mailing List <freebsd-stable@FreeBSD.org> Subject: Re: uptime / w coredumping on RELENG11 (i386 only) Message-ID: <955d6681-0048-5e09-cca6-4691b05bf48f@sentex.net> In-Reply-To: <990862af-7bee-0d4b-c01f-d7fc8e5b6cfe@sentex.net> References: <990862af-7bee-0d4b-c01f-d7fc8e5b6cfe@sentex.net>
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On 5/15/2018 2:10 PM, Mike Tancsa wrote:
> Wasnt sure if it was my VM, so i took a stock 11.1R installed it on a
> new VM and updated the sources to today. Stock GENERIC kernel
>
> ** this is i386 **
>
>
> via truss (w)
>
> access("/etc/localtime",R_OK) = 0 (0x0)
> open("/etc/localtime",O_RDONLY,06605223677) = 5 (0x5)
> fstat(5,{ mode=-r--r--r-- ,inode=1367764,size=118,blksize=32768 }) = 0 (0x0)
> read(5,"TZif2\0\0\0\0\0\0\0\0\0\0\0\0\0"...,29000) = 118 (0x76)
> close(5) = 0 (0x0)
> SIGNAL 11 (SIGSEGV) code=SEGV_MAPERR trapno=12 addr=0x28000184
> process killed, signal = 11 (core dumped)
>
> (gdb) bt
> #0 ifree (tsd=0x28000000) at arena.h:799
> #1 0x2814b506 in __free (ptr=0x280601ef) at tsd.h:716
> #2 0x2808bb07 in xo_do_emit_fields () at
> /usr/src/contrib/libxo/libxo/libxo.c:6419
> #3 0x28089a1c in xo_do_emit (xop=<value optimized out>, flags=<value
> optimized out>, fmt=0x804ad4d "{:time-of-day/%s} ")
> at /usr/src/contrib/libxo/libxo/libxo.c:6470
> #4 0x28089b61 in xo_emit (fmt=0x804ad4d "{:time-of-day/%s} ") at
> /usr/src/contrib/libxo/libxo/libxo.c:6541
> #5 0x08049f50 in ?? ()
> #6 0x0804ad4d in ?? ()
> #7 0xbfbfe044 in ?? ()
> #8 0x28065e58 in list_global () from /libexec/ld-elf.so.1
> #9 0x00000000 in ?? ()
> Current language: auto; currently minimal
> (gdb)
>
> I dont have debug symbols yet
>
> r333636
>
> Anyone else see this ?
>
and for uptime
fstat(5,{ mode=-rw-r--r-- ,inode=4173831,size=591,blksize=32768 }) = 0 (0x0)
fstat(5,{ mode=-rw-r--r-- ,inode=4173831,size=591,blksize=32768 }) = 0 (0x0)
read(5,"\^A\0\^ElBuW\M-K\M-^\0\0\0\0\0\0"...,985) = 591 (0x24f)
stat("/dev/ttyv0",{ mode=crw------- ,inode=73,size=0,blksize=4096 }) = 0
(0x0)
stat("/dev/pts/0",{ mode=crw--w---- ,inode=89,size=0,blksize=4096 }) = 0
(0x0)
read(5,0x28628400,985) = 0 (0x0)
close(5) = 0 (0x0)
access("/etc/localtime",R_OK) = 0 (0x0)
open("/etc/localtime",O_RDONLY,06605223677) = 5 (0x5)
fstat(5,{ mode=-r--r--r-- ,inode=1367764,size=118,blksize=32768 }) = 0 (0x0)
read(5,"TZif2\0\0\0\0\0\0\0\0\0\0\0\0\0"...,29000) = 118 (0x76)
close(5) = 0 (0x0)
SIGNAL 11 (SIGSEGV) code=SEGV_MAPERR trapno=12 addr=0x28000184
process killed, signal = 11 (core dumped)
and using gdb from the ports
# /usr/local/bin/gdb uptime uptime.core
GNU gdb (GDB) 8.1 [GDB v8.1 for FreeBSD]
Copyright (C) 2018 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later
<http://gnu.org/licenses/gpl.html>;
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law. Type "show copying"
and "show warranty" for details.
This GDB was configured as "i386-portbld-freebsd11.1".
Type "show configuration" for configuration details.
For bug reporting instructions, please see:
<http://www.gnu.org/software/gdb/bugs/>.
Find the GDB manual and other documentation resources online at:
<http://www.gnu.org/software/gdb/documentation/>.
For help, type "help".
Type "apropos word" to search for commands related to "word"...
Reading symbols from uptime...Reading symbols from
/usr/lib/debug//usr/bin/w.debug...done.
done.
[New LWP 100130]
Core was generated by `uptime'.
Program terminated with signal SIGSEGV, Segmentation fault.
#0 __je_arena_mapbitsp_read (mapbitsp=<optimized out>) at
/usr/src/contrib/jemalloc/include/jemalloc/internal/arena.h:799
799 return (*mapbitsp);
(gdb) bt full
#0 __je_arena_mapbitsp_read (mapbitsp=<optimized out>) at
/usr/src/contrib/jemalloc/include/jemalloc/internal/arena.h:799
No locals.
#1 __je_arena_mapbits_get (chunk=0x28000000, pageind=<optimized out>)
at /usr/src/contrib/jemalloc/include/jemalloc/internal/arena.h:806
No locals.
#2 __je_arena_mapbits_binind_get (chunk=0x28000000, pageind=<optimized
out>)
at /usr/src/contrib/jemalloc/include/jemalloc/internal/arena.h:863
mapbits = <optimized out>
binind = <optimized out>
#3 __je_arena_salloc (demote=<error reading variable: Cannot access
memory at address 0x0>, tsdn=<optimized out>, ptr=<optimized out>)
at /usr/src/contrib/jemalloc/include/jemalloc/internal/arena.h:1384
chunk = 0x28000000
pageind = <optimized out>
binind = <optimized out>
ret = <optimized out>
#4 __je_isalloc (demote=<error reading variable: Cannot access memory
at address 0x0>, tsdn=<optimized out>, ptr=<optimized out>)
at
/usr/src/contrib/jemalloc/include/jemalloc/internal/jemalloc_internal.h:951
No locals.
#5 ifree (tsd=0x28000000, ptr=<optimized out>, tcache=<optimized out>,
slow_path=<optimized out>) at jemalloc_jemalloc.c:1810
rzsize = <error reading variable rzsize (Cannot access memory at
address 0x0)>
usize = <optimized out>
#6 0x2814b506 in __free (ptr=0x280601ef
<__pthread_cleanup_push_imp_int+31>) at jemalloc_jemalloc.c:1935
No locals.
#7 0x2808bb07 in xo_do_emit_fields (xop=<optimized out>,
fields=<optimized out>, max_fields=<optimized out>, fmt=<optimized out>)
at /usr/src/contrib/libxo/libxo/libxo.c:6419
rc = <error reading variable rc (Cannot access memory at address
0x0)>
flush_line = <optimized out>
max_fend = <error reading variable max_fend (Cannot access
memory at address 0x0)>
field = <optimized out>
xfip = <optimized out>
ftype = <optimized out>
flags = <optimized out>
new_fmt = <optimized out>
new_fields = <optimized out>
flush = <optimized out>
flimit = <optimized out>
min_fstart = <optimized out>
fstart = <optimized out>
fend = <optimized out>
#8 0x28089a1c in xo_do_emit (xop=<optimized out>, flags=<optimized
out>, fmt=0x804ad4d "{:time-of-day/%s} ")
at /usr/src/contrib/libxo/libxo/libxo.c:6470
fields = 0xbfbfdcf0
---Type <return> to continue, or q <return> to quit---
max_fields = 671088640
#9 0x28089b61 in xo_emit (fmt=0x804ad4d "{:time-of-day/%s} ") at
/usr/src/contrib/libxo/libxo/libxo.c:6541
xop = 0x54
rc = <optimized out>
#10 0x08049f50 in pr_header (nowp=<optimized out>, nusers=<optimized
out>) at /usr/src/usr.bin/w/w.c:475
avenrun = {0, 0, 0}
buf = "\000\000\000\000\000\000\000\000
6:18PM\000/0\000\000\244\210\004\b", '\000' <repeats 28 times>,
"\062\000\000\000\247\337*\000\252^\005(s\263 (s\263
(\000\254\006(\020^\006(\002\000\000\000\230\341\277\277\300\340\277\277\264\245
(\020^\006(@\341\277\277g\026\005(\340\340\277\277\320\260\006(\210\341\277\277\020^\006(H\341\277\277\222Z\005(\020\341\277\277\000\240\006(\000\000\000\000\210\341\277\277\020^\006(\000\240\006(\000\000\000\000\000\000\000\000(\342\277\277\000\000\000\000\000\000\000\000\004\000\000\000\260\341\006(
bd\a\240]\005(t'\006(\223\220\f("...
upbuf = <optimized out>
tp = <optimized out>
uptime = <optimized out>
days = <optimized out>
hrs = <optimized out>
mins = <optimized out>
secs = <optimized out>
i = <optimized out>
#11 main (argc=<optimized out>, argv=<optimized out>) at
/usr/src/usr.bin/w/w.c:257
buf = "\000\000\000\000\000\000\000\000
6:18PM\000/0\000\000\244\210\004\b", '\000' <repeats 28 times>,
"\062\000\000\000\247\337*\000\252^\005(s\263 (s\263
(\000\254\006(\020^\006(\002\000\000\000\230\341\277\277\300\340\277\277\264\245
(\020^\006(@\341\277\277g\026\005(\340\340\277\277\320\260\006(\210\341\277\277\020^\006(H\341\277\277\222Z\005(\020\341\277\277\000\240\006(\000\000\000\000\210\341\277\277\020^\006(\000\240\006(\000\000\000\000\000\000\000\000(\342\277\277\000\000\000\000\000\000\000\000\004\000\000\000\260\341\006(
bd\a\240]\005(t'\006(\223\220\f("...
errbuf = "\001", '\000' <repeats 32 times>, "\260\004(", '\000'
<repeats 13 times>,
"\260\004(\000]\006(\000\000\000\000\064\260\004(\200", '\000' <repeats
47 times>, "\070\267\004(\320\t", '\000' <repeats 26 times>,
"p\262\004(p\264\004(w\001\000\000\000\000\000\000\000\000\000\000(\266\004(\b\000\000\000\350\265\004(\274\260\004(\021\000\000\000\000\261\004(
\000\000\000\021\000\000\000\001\000\000\000"...
fn = '\000' <repeats 192 times>, "\252^\005(\\\214\004\b"...
p = <optimized out>
wcmd = <optimized out>
nlistf = <optimized out>
memf = <optimized out>
ch = <optimized out>
nusers = <optimized out>
touched = <optimized out>
nentries = <optimized out>
kp = <optimized out>
i = <optimized out>
dkp = <optimized out>
longattime = <optimized out>
---Type <return> to continue, or q <return> to quit---
longidle = <optimized out>
save_p = <optimized out>
x_suffix = <optimized out>
dot = <optimized out>
stp = <optimized out>
(gdb)
(gdb)
and the debug output of w using gdb from the ports
# /usr/local/bin/gdb /usr/bin/w w.core
GNU gdb (GDB) 8.1 [GDB v8.1 for FreeBSD]
Copyright (C) 2018 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later
<http://gnu.org/licenses/gpl.html>;
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law. Type "show copying"
and "show warranty" for details.
This GDB was configured as "i386-portbld-freebsd11.1".
Type "show configuration" for configuration details.
For bug reporting instructions, please see:
<http://www.gnu.org/software/gdb/bugs/>.
Find the GDB manual and other documentation resources online at:
<http://www.gnu.org/software/gdb/documentation/>.
For help, type "help".
Type "apropos word" to search for commands related to "word"...
Reading symbols from /usr/bin/w...Reading symbols from
/usr/lib/debug//usr/bin/w.debug...done.
done.
[New LWP 100130]
Core was generated by `w'.
Program terminated with signal SIGSEGV, Segmentation fault.
#0 __je_arena_mapbitsp_read (mapbitsp=<optimized out>) at
/usr/src/contrib/jemalloc/include/jemalloc/internal/arena.h:799
799 return (*mapbitsp);
(gdb) bt full
#0 __je_arena_mapbitsp_read (mapbitsp=<optimized out>) at
/usr/src/contrib/jemalloc/include/jemalloc/internal/arena.h:799
No locals.
#1 __je_arena_mapbits_get (chunk=0x28000000, pageind=<optimized out>)
at /usr/src/contrib/jemalloc/include/jemalloc/internal/arena.h:806
No locals.
#2 __je_arena_mapbits_binind_get (chunk=0x28000000, pageind=<optimized
out>)
at /usr/src/contrib/jemalloc/include/jemalloc/internal/arena.h:863
mapbits = <optimized out>
binind = <optimized out>
#3 __je_arena_salloc (demote=<error reading variable: Cannot access
memory at address 0x0>, tsdn=<optimized out>, ptr=<optimized out>)
at /usr/src/contrib/jemalloc/include/jemalloc/internal/arena.h:1384
chunk = 0x28000000
pageind = <optimized out>
binind = <optimized out>
ret = <optimized out>
#4 __je_isalloc (demote=<error reading variable: Cannot access memory
at address 0x0>, tsdn=<optimized out>, ptr=<optimized out>)
at
/usr/src/contrib/jemalloc/include/jemalloc/internal/jemalloc_internal.h:951
No locals.
#5 ifree (tsd=0x28000000, ptr=<optimized out>, tcache=<optimized out>,
slow_path=<optimized out>) at jemalloc_jemalloc.c:1810
rzsize = <error reading variable rzsize (Cannot access memory at
address 0x0)>
usize = <optimized out>
#6 0x2814b506 in __free (ptr=0x280601ef
<__pthread_cleanup_push_imp_int+31>) at jemalloc_jemalloc.c:1935
No locals.
#7 0x2808bb07 in xo_do_emit_fields (xop=<optimized out>,
fields=<optimized out>, max_fields=<optimized out>, fmt=<optimized out>)
at /usr/src/contrib/libxo/libxo/libxo.c:6419
rc = <error reading variable rc (Cannot access memory at address
0x0)>
flush_line = <optimized out>
max_fend = <error reading variable max_fend (Cannot access
memory at address 0x0)>
field = <optimized out>
xfip = <optimized out>
ftype = <optimized out>
flags = <optimized out>
new_fmt = <optimized out>
new_fields = <optimized out>
flush = <optimized out>
flimit = <optimized out>
min_fstart = <optimized out>
fstart = <optimized out>
fend = <optimized out>
#8 0x28089a1c in xo_do_emit (xop=<optimized out>, flags=<optimized
out>, fmt=0x804ad4d "{:time-of-day/%s} ")
at /usr/src/contrib/libxo/libxo/libxo.c:6470
fields = 0xbfbfdcf0
---Type <return> to continue, or q <return> to quit---
max_fields = 671088640
#9 0x28089b61 in xo_emit (fmt=0x804ad4d "{:time-of-day/%s} ") at
/usr/src/contrib/libxo/libxo/libxo.c:6541
xop = 0x54
rc = <optimized out>
#10 0x08049f50 in pr_header (nowp=<optimized out>, nusers=<optimized
out>) at /usr/src/usr.bin/w/w.c:475
avenrun = {0, 0, 0}
buf = "\000\000\000\000\000\000\000\000
6:21PM\000/0\000\000\244\210\004\b", '\000' <repeats 28 times>,
"\062\000\000\000\247\337*\000\252^\005(s\263 (s\263
(\000\254\006(\020^\006(\002\000\000\000\230\341\277\277\300\340\277\277\264\245
(\020^\006(@\341\277\277g\026\005(\340\340\277\277\320\260\006(\210\341\277\277\020^\006(H\341\277\277\222Z\005(\020\341\277\277\000\240\006(\000\000\000\000\210\341\277\277\020^\006(\000\240\006(\000\000\000\000\000\000\000\000(\342\277\277\000\000\000\000\000\000\000\000\004\000\000\000\260\341\006(
bd\a\240]\005(t'\006(\223\220\f("...
upbuf = <optimized out>
tp = <optimized out>
uptime = <optimized out>
days = <optimized out>
hrs = <optimized out>
mins = <optimized out>
secs = <optimized out>
i = <optimized out>
#11 main (argc=<optimized out>, argv=<optimized out>) at
/usr/src/usr.bin/w/w.c:257
buf = "\000\000\000\000\000\000\000\000
6:21PM\000/0\000\000\244\210\004\b", '\000' <repeats 28 times>,
"\062\000\000\000\247\337*\000\252^\005(s\263 (s\263
(\000\254\006(\020^\006(\002\000\000\000\230\341\277\277\300\340\277\277\264\245
(\020^\006(@\341\277\277g\026\005(\340\340\277\277\320\260\006(\210\341\277\277\020^\006(H\341\277\277\222Z\005(\020\341\277\277\000\240\006(\000\000\000\000\210\341\277\277\020^\006(\000\240\006(\000\000\000\000\000\000\000\000(\342\277\277\000\000\000\000\000\000\000\000\004\000\000\000\260\341\006(
bd\a\240]\005(t'\006(\223\220\f("...
errbuf = "\001", '\000' <repeats 32 times>, "\260\004(", '\000'
<repeats 13 times>,
"\260\004(\000]\006(\000\000\000\000\064\260\004(\200", '\000' <repeats
47 times>, "\070\267\004(\320\t", '\000' <repeats 26 times>,
"p\262\004(p\264\004(w\001\000\000\000\000\000\000\000\000\000\000(\266\004(\b\000\000\000\350\265\004(\274\260\004(\021\000\000\000\000\261\004(
\000\000\000\021\000\000\000\001\000\000\000"...
fn = '\000' <repeats 192 times>, "\252^\005(\\\214\004\b"...
p = <optimized out>
wcmd = <optimized out>
nlistf = <optimized out>
memf = <optimized out>
ch = <optimized out>
nusers = <optimized out>
touched = <optimized out>
nentries = <optimized out>
kp = <optimized out>
i = <optimized out>
dkp = <optimized out>
longattime = <optimized out>
---Type <return> to continue, or q <return> to quit---
longidle = <optimized out>
save_p = <optimized out>
x_suffix = <optimized out>
dot = <optimized out>
stp = <optimized out>
(gdb)
--
-------------------
Mike Tancsa, tel +1 519 651 3400 x203
Sentex Communications, mike@sentex.net
Providing Internet services since 1994 www.sentex.net
Cambridge, Ontario Canada
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