Messages in this thread Patch in this message | | | Date | Thu, 26 Jan 2017 15:37:15 +0300 | From | Serge Semin <> | Subject | Re: [PATCH] eeprom: fix memory leak on buf when failed allocation of csraddr_str |
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On Tue, Jan 24, 2017 at 02:38:38PM +0000, Colin King <colin.king@canonical.com> wrote: > From: Colin Ian King <colin.king@canonical.com> > > The error return path When csraddr_str fails to free buf, causing a > memory leak. Fix this by returning via the free_buf label that > performs the necessary cleanup. > > Signed-off-by: Colin Ian King <colin.king@canonical.com> > --- > drivers/misc/eeprom/idt_89hpesx.c | 6 ++++-- > 1 file changed, 4 insertions(+), 2 deletions(-) > > diff --git a/drivers/misc/eeprom/idt_89hpesx.c b/drivers/misc/eeprom/idt_89hpesx.c > index 25d47d0..56bc5c2 100644 > --- a/drivers/misc/eeprom/idt_89hpesx.c > +++ b/drivers/misc/eeprom/idt_89hpesx.c > @@ -965,8 +965,10 @@ static ssize_t idt_dbgfs_csr_write(struct file *filep, const char __user *ubuf, > csraddr_len = colon_ch - buf; > csraddr_str = > kmalloc(sizeof(char)*(csraddr_len + 1), GFP_KERNEL); > - if (csraddr_str == NULL) > - return -ENOMEM; > + if (csraddr_str == NULL) { > + ret = -ENOMEM; > + goto free_buf; > + } > /* Copy the register address to the substring buffer */ > strncpy(csraddr_str, buf, csraddr_len); > csraddr_str[csraddr_len] = '\0'; > -- > 2.10.2 >
Indeed. Thanks for the patch.
Acked-by: Serge Semin <fancer.lancer@gmail.com>
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