lkml.org 
[lkml]   [2014]   [Feb]   [24]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: BUG: Bad page state in process with linux 3.4.76
On Tue 14-01-14 23:10:40, Guillaume Morin wrote:
> Greg,
>
> I am going to do more testing but it seems that reverting this patch
> from 3.4.69 fixes the BUG
> commit b07ef016454ff46f98e633b5a6247ca7e343fb67
> Author: Khalid Aziz <khalid.aziz@oracle.com>
>
> I also verified that I cannot reproduce this problem with 3.13-rc8
I'm going through some old emails... Did this get resolved with later 3.4
stable kernels? If not, I guess you should ping Greg / Khalid to either
revert that commit (I guess preferable given the nature of the change) or
merge some additional fixup...

Honza

> On 14 Jan 21:34, Guillaume Morin wrote:
> >
> > Hi,
> >
> > I wrote this simple program (attached) to play around with kernel AIO.
> > It simply does kernel AIO with O_DIRECT on a small temp file stored on
> > an ext4 filesystem.
> >
> > When I run it with "HUGETLB_MORECORE=yes LD_PRELOAD=libhugetlbfs.so", it
> > triggers the kernel bug on exit every time.
> >
> > Removing HUGETLB_MORECORE from the command line fixes the problem. Note
> > that my kernel does not use THP, it is NOT compiled with
> > CONFIG_TRANSPARENT_HUGEPAGE.
> >
> > I've tried it only with this 3.4.76 but I've been able to reproduce it without
> > any issue on multiple machines running the same kernel.
> >
> > BUG: Bad page state in process aio_test pfn:1b7a01
> > page:ffffea0006de8040 count:0 mapcount:1 mapping: (null) index:0x0
> > page flags: 0x20000000008000(tail)
> > Modules linked in: nfsd exportfs nfs nfs_acl auth_rpcgss fscache lockd sunrpc
> > rdma_ucm rdma_cm ib_addr iw_cm ib_uverbs ib_cm ib_sa ib_mad ib_core ipmi_si
> > ipmi_devintf coretemp pcspkr microcode serio_raw i2c_i801 ioatdma i2c_core dca
> > dm_mod sg sr_mod cdrom crc32c_intel ahci libahci [last unloaded: scsi_wait_scan]
> > Pid: 4441, comm: aio_test Not tainted 3.4.76bug #1
> > Call Trace:
> > [<ffffffff810f3300>] ? is_free_buddy_page+0xa0/0xd0
> > [<ffffffff814c0791>] bad_page+0xe6/0xfc
> > [<ffffffff810f3dbc>] free_pages_prepare+0xfc/0x110
> > [<ffffffff810f3dff>] __free_pages_ok+0x2f/0xd0
> > [<ffffffff810f4080>] __free_pages+0x20/0x40
> > [<ffffffff81124737>] update_and_free_page+0x77/0x80
> > [<ffffffff8112633e>] free_huge_page+0x16e/0x180
> > [<ffffffff810f8030>] __put_compound_page+0x20/0x50
> > [<ffffffff810f8108>] put_compound_page+0x78/0x140
> > [<ffffffff810f8546>] put_page+0x36/0x40
> > [<ffffffff81126ede>] __unmap_hugepage_range+0x1ce/0x230
> > [<ffffffff81127331>] unmap_hugepage_range+0x51/0x90
> > [<ffffffff8110e880>] unmap_single_vma+0x730/0x740
> > [<ffffffff8110f05f>] unmap_vmas+0x5f/0x80
> > [<ffffffff8111672c>] exit_mmap+0xbc/0x130
> > [<ffffffff8112e170>] ? kmem_cache_free+0x20/0xe0
> > [<ffffffff81035155>] mmput+0x35/0xf0
> > [<ffffffff8103a58d>] exit_mm+0xfd/0x120
> > [<ffffffff8103bb6c>] do_exit+0x16c/0x8b0
> > [<ffffffff811540c4>] ? mntput+0x24/0x40
> > [<ffffffff81138962>] ? fput+0x192/0x250
> > [<ffffffff8103c5ff>] do_group_exit+0x3f/0xa0
> > [<ffffffff8103c677>] sys_exit_group+0x17/0x20
> > [<ffffffff814d03d2>] system_call_fastpath+0x16/0x1b
> >
>
>
> --
> Guillaume Morin <guillaume@morinfr.org>
> --
> To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
> the body of a message to majordomo@vger.kernel.org
> More majordomo info at http://vger.kernel.org/majordomo-info.html
> Please read the FAQ at http://www.tux.org/lkml/
--
Jan Kara <jack@suse.cz>
SUSE Labs, CR


\
 
 \ /
  Last update: 2014-02-24 13:21    [W:0.059 / U:0.112 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site