From: Guenter Roeck <linux@roeck-us.net>
To: "Kirill A. Shutemov" <kirill@shutemov.name>,
Mel Gorman <mgorman@suse.de>
Cc: Stephen Rothwell <sfr@canb.auug.org.au>,
linux-next@vger.kernel.org, linux-kernel@vger.kernel.org,
Paul Moore <pmoore@redhat.com>,
Joonsoo Kim <iamjoonsoo.kim@lge.com>,
davem@davemloft.net
Subject: Re: linux-next: Tree for Jan 20
Date: Wed, 21 Jan 2015 19:14:33 -0800 [thread overview]
Message-ID: <54C06B19.8060305@roeck-us.net> (raw)
In-Reply-To: <20150121104325.GA22449@node.dhcp.inet.fi>
On 01/21/2015 02:43 AM, Kirill A. Shutemov wrote:
>> BUG: Bad page state in process init.sh pfn:00000
>> page:f05e7460 count:0 mapcount:-1 mapping: (null) index:0x0
>> flags: 0x400(reserved)
>> page dumped because: PAGE_FLAGS_CHECK_AT_FREE flag(s) set
>> bad because of flags:
>> flags: 0x400(reserved)
>> CPU: 0 PID: 1 Comm: init.sh Not tainted 3.19.0-rc5-next-20150120 #1
>> [f0076010 : bad_page+0xdc/0xfc ] [f00760c0 : free_pages_prepare+0x90/0x1f8 ] [f00775cc : free_hot_cold_page+0x20/0x160 ] [f00919e8 : do_wp_page+0x680/0x6ac ] [f00939f4 : handle_mm_fault+0xc94/0xd08 ] [f0015900 : do_sparc_fault+0xfc/0x3ec ] [f000af90 : srmmu_fault+0x58/0x68 ] [f00e74f4 : load_elf_binary+0x9a8/0xe94 ] [f00b0cac : search_binary_handler+0x68/0x12c ] [f00e67d0 : load_script+0x214/0x224 ] [f00b0cac : search_binary_handler+0x68/0x12c ] [f00b11a4 : do_execveat_common+0x434/0x584 ] [f00b1310 : do_execve+0x1c/0x2c ] [f02b50b0 : kernel_init+0x70/0xf0 ] [f000b200 : ret_from_kernel_thread+0xc/0x38 ] [00000000 : (null) ]
>> Disabling lock debugging due to kernel taint
>> : applet not found
>> Kernel panic - not syncing: Attempted to kill init! exitcode=0x00000100
>
> It doesn't make much sense to me. It tries to free page with pfn==0 on
> handling wp-fault. How it got mapped in the first place?
>
If I comment out the added call to vm_normal_page(), the code works fine.
If the call to vm_local_page() is there but everything else from your patch
is commented out, the crash occurs. Also, any log message added to the new
code patch (inside the if statements) is not getting printed, meaning the
new code (besides the call to vm_local_page) is not reached.
I guess that means that something in the call to vm_normal_page() appears
to go wrong. No idea what that might be, though.
Guenter
next prev parent reply other threads:[~2015-01-22 3:14 UTC|newest]
Thread overview: 71+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-01-20 7:53 linux-next: Tree for Jan 20 Stephen Rothwell
2015-01-20 14:16 ` Guenter Roeck
2015-01-20 16:56 ` linux-next: Tree for Jan 20 -- Kernel panic - Unable to mount root fs Sabrina Dubroca
2015-01-20 17:39 ` Paul Moore
2015-01-20 17:51 ` Sabrina Dubroca
2015-01-20 19:54 ` Al Viro
2015-01-20 20:45 ` Sabrina Dubroca
2015-01-20 21:02 ` Al Viro
2015-01-20 21:38 ` Sabrina Dubroca
2015-01-20 21:58 ` Al Viro
2015-01-20 22:08 ` Sabrina Dubroca
2015-01-20 22:13 ` Guenter Roeck
2015-01-20 22:50 ` Al Viro
2015-01-20 23:17 ` Al Viro
2015-01-20 23:27 ` Sabrina Dubroca
2015-01-21 0:04 ` Paul Moore
2015-01-21 0:14 ` Paul Moore
2015-01-21 0:41 ` Al Viro
2015-01-21 2:44 ` Guenter Roeck
2015-01-21 3:36 ` Al Viro
2015-01-21 4:01 ` Guenter Roeck
2015-01-21 4:36 ` Al Viro
2015-01-21 11:05 ` Sabrina Dubroca
2015-01-21 13:32 ` Guenter Roeck
2015-01-21 18:29 ` Al Viro
2015-01-21 19:06 ` Guenter Roeck
2015-01-21 20:06 ` Al Viro
2015-01-21 21:03 ` Guenter Roeck
2015-01-21 21:28 ` Al Viro
2015-01-21 21:38 ` Guenter Roeck
2015-01-21 21:40 ` Sabrina Dubroca
2015-01-21 21:54 ` Paul Walmsley
2015-01-22 2:28 ` Paul Moore
2015-01-22 4:12 ` Al Viro
2015-01-22 4:49 ` Paul Moore
2015-01-21 21:30 ` Sabrina Dubroca
2015-01-21 14:42 ` Thierry Reding
2015-01-21 15:24 ` Paul Moore
2015-01-21 15:39 ` Thierry Reding
2015-01-21 15:54 ` Sabrina Dubroca
2015-01-21 16:16 ` Paul Moore
2015-01-21 17:38 ` Al Viro
2015-01-21 17:51 ` Guenter Roeck
2015-01-21 16:21 ` Guenter Roeck
2015-01-21 15:06 ` Paul Moore
2015-01-20 21:43 ` Guenter Roeck
2015-01-20 17:54 ` Fabio Estevam
2015-01-20 19:00 ` Ross Zwisler
2015-01-20 19:16 ` Fabio Estevam
2015-01-20 19:24 ` Paul Moore
2015-01-20 19:43 ` Fabio Estevam
2015-01-20 20:10 ` Paul Moore
2015-01-20 20:26 ` linux-next: Tree for Jan 20 Guenter Roeck
2015-01-20 22:54 ` Kirill A. Shutemov
2015-01-21 3:05 ` Guenter Roeck
2015-01-21 10:43 ` Kirill A. Shutemov
2015-01-21 23:34 ` Guenter Roeck
2015-01-22 3:14 ` Guenter Roeck [this message]
2015-01-22 17:13 ` linux-next: Tree for Jan 20 -- sparc32: fix broken set_pte() Kirill A. Shutemov
2015-01-22 17:27 ` Kirill A. Shutemov
2015-01-22 17:27 ` Kirill A. Shutemov
2015-01-22 19:34 ` Guenter Roeck
-- strict thread matches above, loose matches on Subject: below --
2023-01-20 2:14 linux-next: Tree for Jan 20 Stephen Rothwell
2022-01-20 2:01 Stephen Rothwell
2021-01-20 6:26 Stephen Rothwell
2020-01-20 7:20 Stephen Rothwell
2017-01-20 4:49 Stephen Rothwell
2016-01-20 2:12 Stephen Rothwell
2014-01-20 6:45 Stephen Rothwell
2014-01-20 6:45 ` Stephen Rothwell
2012-01-20 2:12 Stephen Rothwell
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