Hi Martin, On Wed, 23 Jan 2013 12:15:37 +0100, Martin Mokrejs wrote: > Hi, > I already reported this to lkml recently with linux-3.7.1 but this is to let you know > that with 3.7.4 I am still getting this kmemleak reported by the kernel. I don't read LKML. > unreferenced object 0xffff88040b614690 (size 256): > comm "swapper/0", pid 1, jiffies 4294937573 (age 133834.550s) > hex dump (first 32 bytes): > 00 00 00 00 ad 4e ad de ff ff ff ff 00 00 00 00 .....N.......... > ff ff ff ff ff ff ff ff 08 7f 5d 82 ff ff ff ff ..........]..... > backtrace: > [<ffffffff815b4aad>] kmemleak_alloc+0x21/0x3e > [<ffffffff81110352>] slab_post_alloc_hook+0x28/0x2a > [<ffffffff8111288a>] __kmalloc+0xf2/0x104 > [<ffffffff81305165>] kzalloc.constprop.14+0xe/0x10 > [<ffffffff813055c6>] device_private_init+0x14/0x63 > [<ffffffff813076a0>] dev_set_drvdata+0x19/0x2f > [<ffffffff815c4f5e>] i801_probe+0x5e/0x451 > [<ffffffff81280e40>] local_pci_probe+0x39/0x61 > [<ffffffff81281f53>] pci_device_probe+0xc6/0xf3 > [<ffffffff81307c5d>] driver_probe_device+0xa9/0x1c1 > [<ffffffff81307dcf>] __driver_attach+0x5a/0x7e > [<ffffffff8130650a>] bus_for_each_dev+0x57/0x83 > [<ffffffff81307806>] driver_attach+0x19/0x1b > [<ffffffff813073d8>] bus_add_driver+0xa8/0x1fa > [<ffffffff81308241>] driver_register+0x8c/0x106 > [<ffffffff81281b4e>] __pci_register_driver+0x59/0x5d I am using the i2c-i801 driver, enabled kmemleak, but I don't get this leak. Did you have to do anything special to get it? Didn't you get a similar leak with older kernels? Do you get a similar leak (with reference to dev_set_drvdata)? I can see that dev_set_drvdata may allocate memory (which I didn't know) and I admit I don't see where it gets released, however this is all happening in the driver core and isn't specific to the i2c-i801 driver, so if there really is a leak there, you should see it in all drivers. -- Jean Delvare -- To unsubscribe from this list: send the line "unsubscribe linux-i2c" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
