From mboxrd@z Thu Jan 1 00:00:00 1970 From: Jens Axboe Subject: Re: Boot failure on Arndale with next-20131105 Date: Tue, 05 Nov 2013 14:25:00 -0700 Message-ID: <5279622C.8040509@kernel.dk> References: <1451170.jb5zbRXgpt@amdc1227> <52792D13.70704@wwwdotorg.org> Mime-Version: 1.0 Content-Type: text/plain; charset=windows-1252 Content-Transfer-Encoding: QUOTED-PRINTABLE Return-path: Received: from merlin.infradead.org ([205.233.59.134]:39979 "EHLO merlin.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755159Ab3KEVZV (ORCPT ); Tue, 5 Nov 2013 16:25:21 -0500 In-Reply-To: <52792D13.70704@wwwdotorg.org> Sender: linux-next-owner@vger.kernel.org List-ID: To: Stephen Warren , Tomasz Figa , Tushar Behera Cc: linux-next@vger.kernel.org, lkml , Chris Mason On 11/05/2013 10:38 AM, Stephen Warren wrote: > I note that compiling next-20131105 generates quite a few warnings re= : > uninitialized variables. Reverting the commit doesn't solve those. >=20 >> block/blk-merge.c: In function =91blk_bio_map_sg=92: >> block/blk-merge.c:133:8: warning: =91bvprv.bv_len=92 may be used uni= nitialized in this function [-Wmaybe-uninitialized] >> block/blk-merge.c:233:23: note: =91bvprv.bv_len=92 was declared here >> block/blk-merge.c:133:8: warning: =91bvprv.bv_offset=92 may be used = uninitialized in this function [-Wmaybe-uninitialized] >> block/blk-merge.c:233:23: note: =91bvprv.bv_offset=92 was declared h= ere >> block/blk-merge.c:133:8: warning: =91bvprv.bv_page=92 may be used un= initialized in this function [-Wmaybe-uninitialized] >> block/blk-merge.c:233:23: note: =91bvprv.bv_page=92 was declared her= e >> block/blk-merge.c: In function =91blk_rq_map_sg=92: >> block/blk-merge.c:133:8: warning: =91bvprv.bv_page=92 may be used un= initialized in this function [-Wmaybe-uninitialized] >> block/blk-merge.c:171:23: note: =91bvprv.bv_page=92 was declared her= e >> block/blk-merge.c:133:8: warning: =91bvprv.bv_offset=92 may be used = uninitialized in this function [-Wmaybe-uninitialized] >> block/blk-merge.c:171:23: note: =91bvprv.bv_offset=92 was declared h= ere >> block/blk-merge.c:133:8: warning: =91bvprv.bv_len=92 may be used uni= nitialized in this function [-Wmaybe-uninitialized] >> block/blk-merge.c:171:23: note: =91bvprv.bv_len=92 was declared here >> block/blk-merge.c: In function =91attempt_merge=92: >> block/blk-merge.c:108:7: warning: =91end_bv.bv_offset=92 may be used= uninitialized in this function [-Wmaybe-uninitialized] >> block/blk-merge.c:89:17: note: =91end_bv.bv_offset=92 was declared h= ere >> block/blk-merge.c:108:7: warning: =91end_bv.bv_page=92 may be used u= ninitialized in this function [-Wmaybe-uninitialized] >> block/blk-merge.c:89:17: note: =91end_bv.bv_page=92 was declared her= e >> block/blk-merge.c:108:7: warning: =91end_bv.bv_len=92 may be used un= initialized in this function [-Wmaybe-uninitialized] >> block/blk-merge.c:89:17: note: =91end_bv.bv_len=92 was declared here Looks like an incomplete merge. The patch to silence those warnings (which aren't bugs, BTW) is definitely in my for-next branch. --=20 Jens Axboe