[<prev] [next>] [thread-next>] [day] [month] [year] [list]
Message-ID: <48FE1D52.6080903@ceibo.fiec.espol.edu.ec>
Date: Tue, 21 Oct 2008 13:20:02 -0500
From: Alex Villacís Lasso
<avillaci@...bo.fiec.espol.edu.ec>
To: netdev@...r.kernel.org
Subject: Regression: Recent networking (qdisc?) patches break irda_get_next_speed()
A regression has been introduced in 2.6.27 in the networking code, which
breaks the irda_get_next_speed() function used by some IrDA drivers,
including ks959-sir, written by me. I have filed a bug at:
http://bugzilla.kernel.org/show_bug.cgi?id=11795
to keep track of this. I am still performing bisection to locate the
exact commit that broke the code, but the bug involves an overwriting of
the beginning of a structure with extraneous data that makes the
LAP_MAGIC check fail. I have tried searching the netdev archives, but
there is no mention at all of regressions caused by this code. Milan
Plzik at irda-users mentions the same problem affecting pxaficp_ir, and
mentions recent qdisc patches as possible culprits. Vasily Khoruzhick
reported this bug at irda-users, and a quick hack (not a proper fix)
proposed by him involves padding "struct irda_skb_cb" with 4 bytes at
the beginning of the structure to move everything else past the buggy
scribbling.
This URL contains an early reference to what is possibly this same bug
http://sourceforge.net/mailarchive/forum.php?thread_name=1223138254.21553.7.camel%40localhost&forum_name=irda-users
--
perl -e '$x=2.4;print sprintf("%.0f + %.0f = %.0f\n",$x,$x,$x+$x);'
--
To unsubscribe from this list: send the line "unsubscribe netdev" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Powered by blists - more mailing lists