Re: [Savannah-users] Bug in IGMP

[Luiji Maryo]

This belongs in the IGMP bug reports list, not here. This mailing list is for messages regarding the Savannah hosting service.

On Mon, Feb 18, 2013 at 9:33 AM, Baudouin, Charles <address@hidden> wrote:

IGMP crashes with division by zero:

 

/**

* Start a timer for an igmp group

*

* @param group the igmp_group for which to start a timer

* @param max_time the time in multiples of IGMP_TMR_INTERVAL (decrease with

*        every call to igmp_tmr())

*/

static void

igmp_start_timer(struct igmp_group *group, u8_t max_time)

{

  /* ensure the input value is > 0 */

  if (max_time == 0) {

    max_time = 1;

  }

  /* ensure the random value is > 0 */

  group->timer = (LWIP_RAND() % (max_time - 1)) + 1;

}

 

If called with max_time = 1.

Should read:

 

static void

igmp_start_timer(struct igmp_group *group, u8_t max_time)

{

  /* ensure the input value is > 0 */

  if (max_time < 2) {

    max_time = 2;

  }

  /* ensure the random value is > 0 */

  group->timer = (LWIP_RAND() % (max_time - 1)) + 1;

}

 

This E-mail and any files transmitted with it ("E-mail") is intended solely for the addressee(s) and may contain confidential and/or legally privileged information. If you are not the addressee(s), any disclosure, reproduction, copying, distribution or other use of the E-mail is prohibited. If you have received this E-mail in error, please delete it and notify the sender immediately via our switchboard or return e-mail.
 
Neither the company nor any subsidiary or affiliate or associated company nor any individual sending this E-mail accepts any liability in respect of the content (including errors and omissions) nor shall this e-mail be deemed to enter the company or any subsidiary or affiliate or associated company into a contract or to create any legally binding obligations unless expressly agreed to in writing under separate cover and timeliness of the E-mail which arise as a result of transmission. If verification is required, please request a hard copy version from the sender.

--
- Luiji Maryo
mail: address@hidden
blog: http://brainboyblogger.blogspot.com/
corp: http://www.entertainingsoftware.com/
fun: http://www.secretmaryo.org/