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SubjectRe: linux-next: Tree for Dec 21
On Wed, 21 Dec 2011 17:47:33 +1100
Stephen Rothwell <sfr@canb.auug.org.au> wrote:

> I have created today's linux-next tree at
> git://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git
> (patches at http://www.kernel.org/pub/linux/kernel/next/ ).

This kernel is seriously busted. Sometime between the Dec 15 tree and
the Dec 31 tree someone added something which appears to be causing
writes to the (ata_piix controlled) disk to get lost. Processes are
getting stuck in D state, usually before it reaches a login prompt.

Suspects would be block, ata, scsi and possibly x86/acpi interrupt
handling.

And no, I'd rather not bisect - it would take ages. If the maintainers
of the relevant trees can suggest specific patches to revert then I can
take a look at that tomorrow.


[ 558.576528] SysRq : Show Blocked State
[ 558.576633] task PC stack pid father
[ 558.576738] sh D 0000000000000001 0 4701 4700 0x00000080
[ 558.576882] ffff8802493f78b8 0000000000000046 000000014a1121c0 ffff8802493f6010
[ 558.577109] ffff88024a1121c0 00000000001d1100 ffff8802493f7fd8 0000000000004000
[ 558.577336] ffff8802493f7fd8 00000000001d1100 ffff880255db66c0 ffff88024a1121c0
[ 558.577568] Call Trace:
[ 558.577623] [<ffffffff81051592>] ? sched_clock_cpu+0xc3/0xd1
[ 558.577679] [<ffffffff81051469>] ? sched_clock_local+0x1c/0x82
[ 558.577736] [<ffffffff81051592>] ? sched_clock_cpu+0xc3/0xd1
[ 558.577793] [<ffffffff810631ae>] ? trace_hardirqs_off+0xd/0xf
[ 558.577848] [<ffffffff810515cb>] ? local_clock+0x2b/0x3c
[ 558.577905] [<ffffffff813d2744>] schedule+0x55/0x57
[ 558.577960] [<ffffffff813d27cd>] io_schedule+0x87/0xca
[ 558.578017] [<ffffffff811a1e72>] get_request_wait+0xbd/0x19e
[ 558.578073] [<ffffffff810446a7>] ? wake_up_bit+0x25/0x25
[ 558.578127] [<ffffffff8119e225>] ? elv_merge+0x9a/0xaa
[ 558.578182] [<ffffffff811a20cc>] blk_queue_bio+0x179/0x271
[ 558.578238] [<ffffffff811a02a9>] generic_make_request+0x9c/0xde
[ 558.578293] [<ffffffff811a03a4>] submit_bio+0xb9/0xc4
[ 558.578348] [<ffffffff810ffcc6>] submit_bh+0xe6/0x108
[ 558.578404] [<ffffffff8110273c>] __block_write_full_page+0x1ec/0x2e3
[ 558.578462] [<ffffffff81101fbe>] ? end_buffer_async_read+0x14b/0x14b
[ 558.578518] [<ffffffff811028fb>] block_write_full_page_endio+0xc8/0xcc
[ 558.578573] [<ffffffff8110290f>] block_write_full_page+0x10/0x12
[ 558.578631] [<ffffffff811417cd>] ext3_writeback_writepage+0xaa/0x11d
[ 558.578690] [<ffffffff810a0ed0>] __writepage+0x15/0x34
[ 558.578744] [<ffffffff810a1913>] write_cache_pages+0x240/0x33e
[ 558.578799] [<ffffffff810a0ebb>] ? set_page_dirty+0x65/0x65
[ 558.578855] [<ffffffff81064abf>] ? trace_hardirqs_on+0xd/0xf
[ 558.578911] [<ffffffff810a1a54>] generic_writepages+0x43/0x5a
[ 558.578967] [<ffffffff810a1a91>] do_writepages+0x26/0x28
[ 558.579022] [<ffffffff8109a8cf>] __filemap_fdatawrite_range+0x4e/0x50
[ 558.579078] [<ffffffff8109aee8>] filemap_flush+0x17/0x19
[ 558.579134] [<ffffffff8113f2c2>] ext3_release_file+0x2e/0xa4
[ 558.579190] [<ffffffff810dbdce>] fput+0x10f/0x1cd
[ 558.579244] [<ffffffff810d86e0>] filp_close+0x70/0x7b
[ 558.579300] [<ffffffff8102c09b>] put_files_struct+0x16c/0x2c1
[ 558.579356] [<ffffffff8102bf7b>] ? put_files_struct+0x4c/0x2c1
[ 558.579412] [<ffffffff8102c236>] exit_files+0x46/0x4e
[ 558.579465] [<ffffffff8102dd2a>] do_exit+0x246/0x73c
[ 558.579521] [<ffffffff813d3c4a>] ? retint_swapgs+0xe/0x13
[ 558.579576] [<ffffffff8102e2a4>] do_group_exit+0x84/0xb2
[ 558.579743] [<ffffffff8102e2e4>] sys_exit_group+0x12/0x16
[ 558.579910] [<ffffffff813d9562>] system_call_fastpath+0x16/0x1b



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