[BETA7-panic] sodealloc(): so_count 1

Vlad marchenko at gmail.com
Wed Oct 6 16:37:41 PDT 2004


little problem after your patch has been applied:

cc -c -O -pipe -march=pentium3 -Wall -Wredundant-decls
-Wnested-externs -Wstrict-prototypes  -
Wmissing-prototypes -Wpointer-arith -Winline -Wcast-qual 
-fformat-extensions -std=c99  -nostd
inc -I-  -I. -I/usr/src/sys -I/usr/src/sys/contrib/dev/acpica
-I/usr/src/sys/contrib/altq -I/u
sr/src/sys/contrib/ipfilter -I/usr/src/sys/contrib/pf
-I/usr/src/sys/contrib/dev/ath -I/usr/sr
c/sys/contrib/dev/ath/freebsd -I/usr/src/sys/contrib/ngatm -D_KERNEL
-include opt_global.h -fn
o-common -finline-limit=8000 --param inline-unit-growth=100 --param
  -mno-align-long-strings -mpreferred-stack-boundary=2 -ffreestanding
-Werror  /usr/src/sys/i3
/usr/src/sys/i386/i386/dump_machdep.c: In function `dump_write':
/usr/src/sys/i386/i386/dump_machdep.c:122: warning: passing arg 3 of
pointer to function makes
 integer from pointer without a cast
*** Error code 1

line 122 is
        rv = di->dumper(di->priv, ptr, NULL, dumplo, len);

also, would you tell how to configure it to gzip data after I'll get
it comlied?  there will be sysctl parameter to set?

On Wed, 6 Oct 2004 17:04:30 -0500, Dan Nelson <dnelson at allantgroup.com> wrote:
> In the last episode (Oct 06), Vlad said:
> > > If you apply the crashdump_compress patch at
> > > http://dan.allantgroup.com/FreeBSD/ , you can generate lzop or
> > > gzip-compressed dumps.  lzop will let you dump 1GB of ram into 512MB of
> > > swap, and gzip will do even better (but is much much slower).
> > >
> >
> > I'll try that. One question: does that code has bounds checking
> > mechanism, so there will be no data harmed (past swap partition) even
> > if compressed dump will be bigger than swap partition?
> Yes.  All of the functions that write data end up calling the
> dump_write() function, which will fail if an attempt is made to write
> outside the dump device. In addition, the code does a preliminary
> compress to determine where it should start writing the dump.  If that
> size is larger than your dumpdevice, it will print a "Dump failed.
> Partition too small." error and won't write to disk at all.



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