On Sun, Feb 22, 2009 at 05:02:01PM +0000, Sitsofe Wheeler wrote: > On Sun, Feb 22, 2009 at 03:47:44PM +0100, Frederic Weisbecker wrote: > > On Sun, Feb 22, 2009 at 12:20:36PM +0000, Sitsofe Wheeler wrote: > > > On Sun, Feb 22, 2009 at 01:01:21PM +0100, Jiri Slaby wrote: > > > > The unsupported jumbo message might be a clue. When we jump to the next: > > > > label, the buffer is at the end of the list in software, while in > > > > hardware it isn't. In theory, we might hit the bug with rx buffers > > > > exhaustion, because the test (bf_last == bf) doesn't work as expected then. > > > > > > This seems to be happening somewhat regularly now - I've got a small > > > collections of the warnings (I'll include them below in case they are > > > any help): > > > > > > [ 7435.711659] ath5k phy0: unsupported jumbo > > > [ 8125.567136] ath5k phy0: noise floor calibration timeout (2417MHz) > > > [ 9596.212322] ath5k phy0: unsupported jumbo > > > [10697.497598] ath5k phy0: unsupported jumbo > > > [11207.740975] ============================================================================= > > > [11207.740986] BUG kmalloc-4096: Poison overwritten > > > [11207.740991] ----------------------------------------------------------------------------- > > > [11207.740994] > > > [11207.740999] INFO: 0xd7060010-0xd7060053. First byte 0x80 instead of 0x6b > > > [11207.741014] INFO: Allocated in dev_alloc_skb+0x21/0x40 age=4990 cpu=0 pid=0 > > > [11207.741023] INFO: Freed in skb_release_data+0x5e/0x90 age=893 cpu=0 pid=508 > > > [11207.741030] INFO: Slab 0xc133dd80 objects=7 used=5 fp=0xd7060000 flags=0x400020c3 > > > [11207.741036] INFO: Object 0xd7060000 @offset=0 fp=0xd70640c0 > > > Looks like it happens with ath5k driver. > > Well, I have an atheros card, so I'm testing it. > > Good luck! I've just switched to a different location (with faster wifi > and more single network access points ) and I've been totally unable to > reproduce this warning. I have some troubles with kmemcheck, so I give up for now. Well, by reading the kmemcheck documentation, it tells that there can be some false positives so... > If there's some debug output that I produce that will help you let me > know... Since we are not sure this is a real bug, I'm not sure it would be interesting. Well, I will see that later. Thanks. > -- > Sitsofe | http://sucs.org/~sits/ -- To unsubscribe from this list: send the line "unsubscribe linux-wireless" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
