diff options
| author | Alexey Dobriyan <adobriyan@openvz.org> | 2007-05-08 00:25:45 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@woody.linux-foundation.org> | 2007-05-08 11:15:01 -0700 |
| commit | 7695650a924a6859910c8c19dfa43b4d08224d66 (patch) | |
| tree | 5947c3e1b24600b6440468c11b30feeef31eee2c /fs/char_dev.c | |
| parent | 79c0b2df79eb56fc71e54c75cd7fb3acf84370f9 (diff) | |
Fix race between proc_get_inode() and remove_proc_entry()
proc_lookup remove_proc_entry
=========== =================
lock_kernel();
spin_lock(&proc_subdir_lock);
[find PDE with refcount 0]
spin_unlock(&proc_subdir_lock);
spin_lock(&proc_subdir_lock);
[find PDE with refcount 0]
[check refcount and free PDE]
spin_unlock(&proc_subdir_lock);
proc_get_inode:
de_get(de); /* boom */
Signed-off-by: Alexey Dobriyan <adobriyan@openvz.org>
Cc: "Eric W. Biederman" <ebiederm@xmission.com>
Cc: Oleg Nesterov <oleg@tv-sign.ru>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'fs/char_dev.c')
0 files changed, 0 insertions, 0 deletions