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Message-ID: <521BC1AC.9090002@hurleysoftware.com> Date: Mon, 26 Aug 2013 16:59:24 -0400 From: Peter Hurley <peter@...leysoftware.com> To: Andrew Morton <akpm@...ux-foundation.org> CC: Svenning Sørensen <sss@...omea.dk>, linux-kernel@...r.kernel.org Subject: Re: [PATCH] IPC: bugfix for msgrcv with msgtyp < 0 On 08/26/2013 04:42 PM, Andrew Morton wrote: > On Sat, 24 Aug 2013 08:49:25 -0400 Peter Hurley <peter@...leysoftware.com> wrote: > >> On 08/24/2013 07:44 AM, Svenning S__rensen wrote: >>> According to 'man msgrcv': >>> "If msgtyp is less than 0, the first message of the lowest type that is less >>> than or equal to the absolute value of msgtyp shall be received." >>> >>> Bug: The kernel only returns a message if its type is 1; other messages with >>> type < abs(msgtype) will never get returned. >>> >>> Fix: After having traversed the list to find the first message with the >>> lowest type, we need to actually return that message. >> >> Sorry for the breakage. Needs to go to -stable as well. > > Do you know which commit caused the regression? That would help those > who wish to fix up their kernels. Commit daaf74cf0867e3042090d56d10b194d6265b4684, ipc: refactor msg list search into separate function introduced this regression. Regards, Peter Hurley >> Reviewed-by: Peter Hurley <peter@...leysoftware.com> >> -- 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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