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Revert "zram: convert remaining CLASS_ATTR() to CLASS_ATTR_RO()"

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commit 853eab68afc80f59f36bbdeb715e5c88c501e680 upstream.

Turns out that the permissions for 0400 really are what we want here,
otherwise any user can read from this file.

[fixed formatting, added changelog, and made attribute static - gregkh]

Reported-by: Wade Mealing <[email protected]>
Cc: stable <[email protected]>
Fixes: f40609d159 ("zram: convert remaining CLASS_ATTR() to CLASS_ATTR_RO()")
Link: https://bugzilla.redhat.com/show_bug.cgi?id=1847832
Reviewed-by: Steffen Maier <[email protected]>
Acked-by: Minchan Kim <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Greg Kroah-Hartman <[email protected]>
This commit is contained in:
Wade Mealing 2020-06-17 13:49:47 +02:00 • committed by Greg Kroah-Hartman
commit 72648019cd
1 changed files with 2 additions and 1 deletions
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3
drivers/block/zram/zram_drv.c
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@ -2023,7 +2023,8 @@ static ssize_t hot_add_show(struct class *class,
return ret;
return scnprintf(buf, PAGE_SIZE, "%d\n", ret);
}
static CLASS_ATTR_RO(hot_add);
static struct class_attribute class_attr_hot_add =
__ATTR(hot_add, 0400, hot_add_show, NULL);
static ssize_t hot_remove_store(struct class *class,
struct class_attribute *attr,