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| author | Oliver Neukum <oliver@neukum.org> | 2008-07-26 22:42:42 +0200 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2008-07-26 20:40:09 -0700 |
| commit | 852fef69c0d9510a28a70221cfddd004efa02552 (patch) | |
| tree | 3cc5a175ad181262926f0498a74054e482220088 /drivers | |
| parent | 9ee08c2df47c10ba624ff05a6c0f2500748bcb69 (diff) | |
| download | linux-3.10-852fef69c0d9510a28a70221cfddd004efa02552.tar.gz linux-3.10-852fef69c0d9510a28a70221cfddd004efa02552.tar.bz2 linux-3.10-852fef69c0d9510a28a70221cfddd004efa02552.zip | |
fix for a memory leak in an error case introduced by fix for double free
The fix NULLed a pointer without freeing it.
Signed-off-by: Oliver Neukum <oneukum@suse.de>
Reported-by: Juha Motorsportcom <juha_motorsportcom@luukku.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/usb/serial/ipaq.c | 10 |
1 files changed, 6 insertions, 4 deletions
diff --git a/drivers/usb/serial/ipaq.c b/drivers/usb/serial/ipaq.c index 832a5a4f3cb..cd9a2e138c8 100644 --- a/drivers/usb/serial/ipaq.c +++ b/drivers/usb/serial/ipaq.c @@ -651,15 +651,17 @@ static int ipaq_open(struct tty_struct *tty, */ kfree(port->bulk_in_buffer); + kfree(port->bulk_out_buffer); + /* make sure the generic serial code knows */ + port->bulk_out_buffer = NULL; + port->bulk_in_buffer = kmalloc(URBDATA_SIZE, GFP_KERNEL); - if (port->bulk_in_buffer == NULL) { - port->bulk_out_buffer = NULL; /* prevent double free */ + if (port->bulk_in_buffer == NULL) goto enomem; - } - kfree(port->bulk_out_buffer); port->bulk_out_buffer = kmalloc(URBDATA_SIZE, GFP_KERNEL); if (port->bulk_out_buffer == NULL) { + /* the buffer is useless, free it */ kfree(port->bulk_in_buffer); port->bulk_in_buffer = NULL; goto enomem; |