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| author | Stefani Seibold <stefani@seibold.net> | 2009-11-03 10:22:40 +0100 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2009-11-04 13:25:03 +0100 |
| commit | 89240ba059ca468ae7a8346edf7f95082458c2fc (patch) | |
| tree | a16b4ce794572d256f568e41fe9ccfc10c35ff39 /fs/compat.c | |
| parent | Merge branch 'iommu/fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/j... (diff) | |
| download | linux-89240ba059ca468ae7a8346edf7f95082458c2fc.tar.xz linux-89240ba059ca468ae7a8346edf7f95082458c2fc.zip | |
x86, fs: Fix x86 procfs stack information for threads on 64-bit
This patch fixes two issues in the procfs stack information on
x86-64 linux.
The 32 bit loader compat_do_execve did not store stack
start. (this was figured out by Alexey Dobriyan).
The stack information on a x64_64 kernel always shows 0 kbyte
stack usage, because of a missing implementation of the KSTK_ESP
macro which always returned -1.
The new implementation now returns the right value.
Signed-off-by: Stefani Seibold <stefani@seibold.net>
Cc: Americo Wang <xiyou.wangcong@gmail.com>
Cc: Alexey Dobriyan <adobriyan@gmail.com>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Cc: Andrew Morton <akpm@linux-foundation.org>
LKML-Reference: <1257240160.4889.24.camel@wall-e>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'fs/compat.c')
| -rw-r--r-- | fs/compat.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/fs/compat.c b/fs/compat.c index d576b552e8e2..6c19040ffeef 100644 --- a/fs/compat.c +++ b/fs/compat.c @@ -1532,6 +1532,8 @@ int compat_do_execve(char * filename, if (retval < 0) goto out; + current->stack_start = current->mm->start_stack; + /* execve succeeded */ current->fs->in_exec = 0; current->in_execve = 0; |