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| author | Frederic Weisbecker <fweisbec@gmail.com> | 2010-03-30 02:33:36 +0200 |
|---|---|---|
| committer | Frederic Weisbecker <fweisbec@gmail.com> | 2010-04-09 17:23:24 +0200 |
| commit | 73296bc611cee009f3be6b451e827d1425b9c10f (patch) | |
| tree | 553af58153a05e6a6cc43d4dbcf5acdf6fc3f4c8 /fs/proc | |
| parent | 41775e29a74ed825496c975ba19c7661e15f0523 (diff) | |
| download | linux-3.10-73296bc611cee009f3be6b451e827d1425b9c10f.tar.gz linux-3.10-73296bc611cee009f3be6b451e827d1425b9c10f.tar.bz2 linux-3.10-73296bc611cee009f3be6b451e827d1425b9c10f.zip | |
procfs: Use generic_file_llseek in /proc/vmcore
/proc/vmcore has no llseek and then falls down to use default_llseek.
This is racy against read_vmcore() that directly manipulates fpos
but it doesn't hold the bkl there so using it in llseek doesn't
protect anything.
Let's use generic_file_llseek() instead.
Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: John Kacur <jkacur@redhat.com>
Cc: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Cc: Al Viro <viro@ZenIV.linux.org.uk>
Diffstat (limited to 'fs/proc')
| -rw-r--r-- | fs/proc/vmcore.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/fs/proc/vmcore.c b/fs/proc/vmcore.c index 0872afa58d3..00ef6046d8d 100644 --- a/fs/proc/vmcore.c +++ b/fs/proc/vmcore.c @@ -162,6 +162,7 @@ static ssize_t read_vmcore(struct file *file, char __user *buffer, static const struct file_operations proc_vmcore_operations = { .read = read_vmcore, + .llseek = generic_file_llseek, }; static struct vmcore* __init get_new_element(void) |