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Message-ID: <CAGdtn26yE+zuCVKLG8rbDTBooDDDhOXG2wWA6bJ_CE_hq=VqOA@mail.gmail.com> Date: Wed, 7 Aug 2013 11:12:05 +0100 From: Reece Dunn <msclrhd@...glemail.com> To: linux-ext4@...r.kernel.org Subject: unsigned/signed type mismatch in init_bg overrun variable Hi, This was initially reported to the Android project at http://code.google.com/p/android/issues/detail?id=58674 by someone else. 284 u32 overrun = bg->first_block + info.blocks_per_group - aux_info.len_blocks; 285 if (overrun > 0) 286 reserve_blocks(bg, info.blocks_per_group - overrun, overrun); Here, |reserve_blocks| is always called unless |bg->first_block + info.blocks_per_group == aux_info.len_blocks| as overrun is unsigned and the expression is signed. The suggestion in the Android bug report was to change |overrun| to |s64|. Thanks, - Reece -- To unsubscribe from this list: send the line "unsubscribe linux-ext4" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
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