Re: [Crash-utility] Wrong RSS field in ps

On Tue, 4 Aug 2015 09:06:47 -0400 (EDT) Dave Anderson <anderson(a)redhat.com&gt; wrote: > > > ----- Original Message ----- > > On Mon, 3 Aug 2015 14:54:28 -0400 (EDT) > > Dave Anderson <anderson(a)redhat.com&gt; wrote: > > > > > > > > > > > ----- Original Message ----- > > > > Hello Dave, > > > > > > > > On s390 (kernel 4.2.0-rc2) the "RSS" field in "ps" is wrong. > > > > > > > > The reason is that in rss_page_types_init() > > > > enumerator_value("MM_ANONPAGES", > > > > &anonpages) returns zero for "anonpages" and therefore we add > > > > MM_FILEPAGES > > > > twice instead of adding MM_ANONPAGES. > > > > > > > > [snip] > > > > > And I verified that the enumerator_value() function returns > > > successfully, > > > and that > > > it returns the correct values. If enumerator_value() returns > > > successfully, > > > they get > > > stored in the task_table: > > > > > > crash> help -t | grep -e filepages -e anonpages > > > filepages: 0 > > > anonpages: 1 > > > crash>[root@hp-dl980g7-02 crash.git] > > > > > > When you you do a "help -t" do you see both of the above showing "0"? > > > > crash> help -t | grep -e filepages -e anonpages > > filepages: 0 > > anonpages: 0 > > > > Perhaps a gdb issue on s390? > > What does gdb alone show? I'm not sure the best way to dump anonymous > enums > with gdb, but this should show a value of 1 for MM_ANONPAGES: > > # gdb /usr/lib/debug/lib/modules/4.2.0-0.rc4.git1.1.fc23.x86_64/vmlinux > GNU gdb (GDB) Fedora 7.9.90.20150717-7.fc23 > Copyright (C) 2015 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 "x86_64-redhat-linux-gnu". > 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/lib/debug/lib/modules/4.2.0-0.rc4.git1.1.fc23.x86_64/vmlinux...done. > (gdb) printf "%d\n", MM_ANONPAGES > 1 Same with my gdb (7.9-10.1): gdb ./vmlinux.full GNU gdb (GDB) Fedora 7.9-10.1 [...] Reading symbols from ./vmlinux.full...done. (gdb) printf "%d\n", MM_ANONPAGES 1 If I call gdb within crash, I get the same result: crash> gdb printf "%d\n", MM_ANONPAGES 1 Michael