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Date: Sun, 15 Jun 2014 23:28:50 -0400 From: Nick Krause <xerofoify@...il.com> To: David Miller <davem@...emloft.net> Cc: andriy.shevchenko@...ux.intel.com, dvhart@...ux.intel.com, jeffrey.t.kirsher@...el.com, ast@...mgrid.com, dborkman@...hat.com, bhutchings@...arflare.com, netdev@...r.kernel.org, linux-kernel@...r.kernel.org Subject: Re: [PATCH] Missing return check against Null for return value of netdev_alloc_dev_skb() Fair enjoy I was wondering if it fails I can run a goto statement and then free the memory for the tx as needed. Cheers Nick P.S. That was really stupid I didn't think that through at all :) On Sun, Jun 15, 2014 at 10:26 PM, David Miller <davem@...emloft.net> wrote: > From: Nick Krause <xerofoify@...il.com> > Date: Sun, 15 Jun 2014 16:27:23 -0400 > >> From 62b0d77a1430f74b7f5c008c5e8bec11604b33b0 Mon Sep 17 00:00:00 2001 >> From: Nick <xerofoify@...il.com> >> Date: Sun, 15 Jun 2014 16:16:14 -0400 >> Subject: [PATCHv2] Fixes return logic of function of pch_gbe_alloc_tx_buffers() >> Here is the fixed patch changed return type of function to int in >> order to use return -ENOMEM as with the function above it , seems to >> fit , otherwise returns 0. >> Report if it breaks anything related to this driver. >> Signed-off-by: Nick <xerofoify@...il.com> > > Nobody is checking the return value, you can't just change the function to > return an error code, you have to make the caller act upon it appropriately > as well. > > I'm very much not confident that you are willing to put in the effort > necessary to fix this problem properly. > > I told you explicitly that if this memory allocation failure occurs, the > bringup of the device has to fail. > > Your patch is making the situation worse, it breaks when there is an > allocation failure, leaving the TX run partially allocated so that the > driver will crash with an OOPS later. > > From your first iteration, you aren't build testing this change, and I > therefore severely doubt you are functionally testing this change either. > > I hate to be harsh, but this is an extremely _poor_ patch submission. -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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