Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1763763AbYJJUky (ORCPT ); Fri, 10 Oct 2008 16:40:54 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1760916AbYJJUkp (ORCPT ); Fri, 10 Oct 2008 16:40:45 -0400 Received: from mx3.mail.elte.hu ([157.181.1.138]:37472 "EHLO mx3.mail.elte.hu" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1759200AbYJJUko (ORCPT ); Fri, 10 Oct 2008 16:40:44 -0400 Date: Fri, 10 Oct 2008 22:40:15 +0200 From: Ingo Molnar To: Linus Torvalds Cc: linux-kernel@vger.kernel.org, Andrew Morton , Jens Axboe , Thomas Gleixner , "H. Peter Anvin" , Yinghai Lu Subject: Re: [bug] latest -git boot hang Message-ID: <20081010204015.GA15668@elte.hu> References: <20081010203043.GA11798@elte.hu> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20081010203043.GA11798@elte.hu> User-Agent: Mutt/1.5.18 (2008-05-17) X-ELTE-VirusStatus: clean X-ELTE-SpamScore: -1.5 X-ELTE-SpamLevel: X-ELTE-SpamCheck: no X-ELTE-SpamVersion: ELTE 2.0 X-ELTE-SpamCheck-Details: score=-1.5 required=5.9 tests=BAYES_00,DNS_FROM_SECURITYSAGE autolearn=no SpamAssassin version=3.2.3 -1.5 BAYES_00 BODY: Bayesian spam probability is 0 to 1% [score: 0.0000] 0.0 DNS_FROM_SECURITYSAGE RBL: Envelope sender in blackholes.securitysage.com Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 8134 Lines: 150 * Ingo Molnar wrote: > with latest -git (f6bccf6), -tip testing on one of my test-boxes found > a boot hang. > > It just hangs during fsck, "Checking filesystems", so i suspect the > block IO changes. bisection ongoing. Current bisection window: nr of bisection commits: 128 ---------------------------- ad3316b: block: Find bio sector offset given idx and offset b02739b: block: gendisk integrity wrapper ad7fce9: block: Switch blk_integrity_compare from bdev to gendisk 0c032ab: block: Fix double put in blk_integrity_unregister 74aa8c2: block: Introduce integrity data ownership flag b04accc: block: revert part of d7533ad0e132f92e75c1b2eb7c26387b25a583c1 8deaf72: bio.h: Remove unused conditional code d00e29f: block: remove end_{queued|dequeued}_request() 99cd338: block: change elevator to use __blk_end_request() 7afb3a6: gdrom: change to use __blk_end_request() 2a9df50: memstick: change to use __blk_end_request() 8316982: virtio_blk: change to use __blk_end_request() 0497b34: blktrace: use BLKTRACE_BDEV_SIZE as the name size for setup structure ef9e3fa: block: add lld busy state exporting interface 336c3d8: block: Fix blk_start_queueing() to not kick a stopped queue c0ddffa: include blktrace_api.h in headers_install e3ba9ae: block: reserve some tags just for sync IO f7d7b7a: block: as/cfq ssd idle check update 8bff7c6: libata: set queue SSD flag for SSD devices a68bbdd: block: add queue flag for SSD/non-rotational devices 9e49184: floppy: support arbitrary first-sector numbers 061837b: drivers/block: Use DIV_ROUND_UP 905bd78: cciss: Fix cciss SCSI rescan code to better notice device changes 79eb014: fix an example of scatterlists handling in DMA-API.txt 4ee5eaf: block: add a queue flag for request stacking support 82124d6: block: add request submission interface 32fab44: block: add request update interface e3335de: block: blk_cleanup_queue() should call blk_sync_queue() 9246b5f: block: Expand Xen blkfront for > 16 xvd 9c02f2b: block: cleanup some of the integrity stuff in blkdev.h 7ba1fba: block: use rq complete marking in blk_abort_request() 581d4e2: block: add fault injection mechanism for faking request timeouts 0a0d96b: block: add bio_kmalloc() 3e6053d: block: adjust blkdev_issue_discard for swap 4677735: sg: remove unnecessary blk_rq_unmap_user 0b6cb26: sg: remove sg_read_xfer c3919af: sg: remove sg_write_xfer 626710c: sg: incorporate sg_build_direct into sg_start_req 44c7b0e: sg: remove __sg_start_req fd1c1de: sg: remove b_malloc_len in sg_scatter_hold struct 7e56cb0: sg: remove SG_ALLOW_DIO_CODE define a91a3a2: sg: rename sg_cmd_done sg_rq_end_io 224cb3e: dm: Call blk_abort_queue on failed paths 11914a5: block: Add interface to abort queued requests 242f9dc: block: unify request timeout handling 608aeef: Call flush_disk() after detecting an online resize. 56ade44: Added flush_disk to factor out common buffer cache flushing code. f98a8ca: SCSI sd driver calls revalidate_disk wrapper. 9bc3ffb: Check for device resize when rescanning partitions c3279d1: Adjust block device size after an online resize of a disk. 0c002c2: Wrapper for lower-level revalidate_disk routines. 243294d: block: fix duplicate headers for /proc/partitions fad7f01: sg: set dxferp to NULL for READ with the older SG interface 8188276: block: make blk_rq_map_user take a NULL user-space buffer 839e96a: block: update comment on end_request() 55dc7db: init: DEBUG_BLOCK_EXT_DEVT requires explicit root= param 2bbedcb: block: don't test for partition size in bdget_disk() and blk_lookup_devt() 759f8ca: Change default value of CONFIG_DEBUG_BLOCK_EXT_DEVT to 'n' aeb3d3a: block: kmalloc args reversed, small function definition fixes 01cfcdd: sg: use blk_rq_aligned helper function 8790407: block: add blk_rq_aligned helper function 4d8ab62: bio: convert bio_copy_kern to use bio_copy_user 10db10d: sg: convert the indirect IO path to use the block layer 6e5a30c: sg: convert the direct IO path to use the block layer 10865df: sg: convert the non-data path to use the block layer 152e283: block: introduce struct rq_map_data to use reserved pages a3bce90: block: add gfp_mask argument to blk_rq_map_user and blk_rq_map_user_iov 45333d5: cfq-iosched: fix queue depth detection 6054016: block: don't use bio_has_data() in the completion path ab780f1: block: inherit CPU completion on bio->rq and rq->rq merges c7c22e4: block: add support for IO CPU affinity 18887ad: block: make kblockd_schedule_work() take the queue as parameter b646fc5: block: split softirq handling into blk-softirq.c 0835da6: block: use linux/uaccess.h in elevator.c instead of asm variant 3e1a7ff: block: allow disk to have extended device number 689d6fa: block: replace @ext_minors with GENHD_FL_EXT_DEVT 540eed5: block: make partition array dynamic 074a7ac: block: move stats from disk to part0 eddb2e2: block: kill GENHD_FL_FAIL and use part0->make_it_fail 0762b8b: block: always set bdev->bd_part 4c46501: block: move holder_dir from disk to part0 b7db995: block: move policy from disk to part0 e561052: block: unify sysfs size node handling 548b10e: block: move __dev from disk to part0 80795ae: block: move capacity from disk to part0 b5d0b9d: block: introduce partition 0 ed9e198: block: implement and use {disk|part}_to_dev() 870d665: block: implement CONFIG_DEBUG_BLOCK_EXT_DEVT f615b48: sd/ide-disk: apply extended minors to sd and ide 1f01429: block: adjust formatting for large minors and add ext_range sysfs attr bcce3de: block: implement extended dev numbers c995905: block: fix diskstats access e71bf0d: block: fix disk->part[] dereferencing race f331c02: block: don't depend on consecutive minor space cf771cb: block: make variable and argument names more consistent 310a2c1: block: misc updates 88e3412: block: update add_partition() error handling ec2cded: block: allow deleting zero length partition def4e38: block: use class_dev_iterator instead of class_for_each_device() 2ac3cee: block: don't grab block_class_lock unnecessarily ac65ece: block: fix partition info printouts 5a3ceb8: driver-core: use klist for class device list and implement iterator a1ed5b0: klist: don't iterate over deleted entries 710027a: Add some block/ source files to the kernel-api docbook. Fix kernel-doc notation in them as needed. Fix changed function parameter names. Fix typos/spellos. In comments, change REQ_SPECIAL to REQ_TYPE_SPECIAL and REQ_BLOCK_PC to REQ_TYPE_BLOCK_PC. 5b99c2f: block: make bi_phys_segments an unsigned int instead of short 960e739: block: raid fixups for removal of bi_hw_segments 5df97b9: drop vmerge accounting b8b3e16: block: drop virtual merging accounting 6a421c1: block: update documentation for deadline fifo_batch tunable 4fb72f7: deadline-iosched: non-functional fixes 63de428: deadline-iosched: allow non-sequential batching 766ca44: virtio_blk: use a wrapper function to access io context information of IO requests 1a8e2bd: Kill REQ_TYPE_FLUSH e17fc0a: Allow elevators to sort/merge discard requests d30a260: Add BLKDISCARD ioctl to allow userspace to discard sectors 2ebca85: Use WRITE_BARRIER in blkdev_issue_flush(), not (1<