[Bug 14258] New: Memory leak in SCSI initialization

[Bug 14258] New: Memory leak in SCSI initialization

[bugzilla-daemon]

http://bugzilla.kernel.org/show_bug.cgi?id=14258

           Summary: Memory leak in SCSI initialization
           Product: IO/Storage
           Version: 2.5
    Kernel Version: 2.6.31
          Platform: All
        OS/Version: Linux
              Tree: Mainline
            Status: NEW
          Severity: normal
          Priority: P1
         Component: SCSI
        AssignedTo: linux-scsi@vger.kernel.org
        ReportedBy: rjw@sisk.pl
            Blocks: 13615
        Regression: Yes


Subject    : [2.6.31] Memory leak in SCSI initialization?
Submitter  : Tetsuo Handa <penguin-kernel@i-love.sakura.ne.jp>
Date       : 2009-09-22 4:18
References : http://marc.info/?l=linux-kernel&m=125359311312243&w=4
Handled-By : Michael Ellerman <michael@ellerman.id.au>
Patch      : http://patchwork.kernel.org/patch/49258/

This entry is being used for tracking a regression from 2.6.30.  Please don't
close it until the problem is fixed in the mainline.

-- 
Configure bugmail: http://bugzilla.kernel.org/userprefs.cgi?tab=email
------- You are receiving this mail because: -------
You are the assignee for the bug.

[Bug 14258] Memory leak in SCSI initialization

[bugzilla-daemon]

http://bugzilla.kernel.org/show_bug.cgi?id=14258


Rafael J. Wysocki <rjw@sisk.pl> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
         Resolution|                            |PATCH_ALREADY_AVAILABLE




-- 
Configure bugmail: http://bugzilla.kernel.org/userprefs.cgi?tab=email
------- You are receiving this mail because: -------
You are the assignee for the bug.

[Bug #14258] Memory leak in SCSI initialization

[Rafael J. Wysocki]

This message has been generated automatically as a part of a report
of regressions introduced between 2.6.30 and 2.6.31.

The following bug entry is on the current list of known regressions
introduced between 2.6.30 and 2.6.31.  Please verify if it still should
be listed and let me know (either way).


Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=14258
Subject		: Memory leak in SCSI initialization
Submitter	: Tetsuo Handa <penguin-kernel@i-love.sakura.ne.jp>
Date		: 2009-09-22 4:18 (10 days old)
References	: http://marc.info/?l=linux-kernel&m=125359311312243&w=4
Handled-By	: Michael Ellerman <michael@ellerman.id.au>
Patch		: http://patchwork.kernel.org/patch/49258/

Re: [Bug #14258] Memory leak in SCSI initialization

[Tetsuo Handa]

Rafael J. Wysocki wrote:
> This message has been generated automatically as a part of a report
> of regressions introduced between 2.6.30 and 2.6.31.
This memory leak might exist in all releases since 23 Sep 2005.
http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commitdiff;h=6f3a20242db2597312c50abc11f1e747c5d2326a
> 
> The following bug entry is on the current list of known regressions
> introduced between 2.6.30 and 2.6.31.  Please verify if it still should
> be listed and let me know (either way).
As of now, the patch is not yet merged into Linus's tree.
It still should be listed.
> 
> Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=14258
> Subject		: Memory leak in SCSI initialization
> Submitter	: Tetsuo Handa <penguin-kernel@i-love.sakura.ne.jp>
> Date		: 2009-09-22 4:18 (10 days old)
> References	: http://marc.info/?l=linux-kernel&m=125359311312243&w=4
> Handled-By	: Michael Ellerman <michael@ellerman.id.au>
> Patch		: http://patchwork.kernel.org/patch/49258/
> 
Regards.

Re: [Bug #14258] Memory leak in SCSI initialization

[Rafael J. Wysocki]

On Friday 02 October 2009, Tetsuo Handa wrote:
> Rafael J. Wysocki wrote:
> > This message has been generated automatically as a part of a report
> > of regressions introduced between 2.6.30 and 2.6.31.
> This memory leak might exist in all releases since 23 Sep 2005.
> http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commitdiff;h=6f3a20242db2597312c50abc11f1e747c5d2326a
> > 
> > The following bug entry is on the current list of known regressions
> > introduced between 2.6.30 and 2.6.31.  Please verify if it still should
> > be listed and let me know (either way).
> As of now, the patch is not yet merged into Linus's tree.
> It still should be listed.
> > 
> > Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=14258
> > Subject		: Memory leak in SCSI initialization
> > Submitter	: Tetsuo Handa <penguin-kernel@i-love.sakura.ne.jp>
> > Date		: 2009-09-22 4:18 (10 days old)
> > References	: http://marc.info/?l=linux-kernel&m=125359311312243&w=4
> > Handled-By	: Michael Ellerman <michael@ellerman.id.au>
> > Patch		: http://patchwork.kernel.org/patch/49258/

Thanks for the update.

Rafael

Re: [Bug #14258] Memory leak in SCSI initialization

[Tetsuo Handa]

Rafael J. Wysocki wrote:
> > > Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=14258
> > > Subject		: Memory leak in SCSI initialization
> > > Submitter	: Tetsuo Handa <penguin-kernel@i-love.sakura.ne.jp>
> > > Date		: 2009-09-22 4:18 (10 days old)
> > > References	: http://marc.info/?l=linux-kernel&m=125359311312243&w=4
> > > Handled-By	: Michael Ellerman <michael@ellerman.id.au>
> > > Patch		: http://patchwork.kernel.org/patch/49258/
> 
> Thanks for the update.
http://patchwork.kernel.org/patch/49258/ would be replaced by
an updated patch at http://lkml.org/lkml/2009/10/2/335

Regards.

[Bug 14258] Memory leak in SCSI initialization

[bugzilla-daemon]

http://bugzilla.kernel.org/show_bug.cgi?id=14258





--- Comment #1 from Rafael J. Wysocki <rjw@sisk.pl>  2009-10-07 20:21:40 ---
Ignore-Patch : http://patchwork.kernel.org/patch/49258/
Handled-By : James Bottomley <James.Bottomley@suse.de>
Patch : http://patchwork.kernel.org/patch/51412/

-- 
Configure bugmail: http://bugzilla.kernel.org/userprefs.cgi?tab=email
------- You are receiving this mail because: -------
You are the assignee for the bug.

Re: [Bug #14258] Memory leak in SCSI initialization

[Rafael J. Wysocki]

On Wednesday 07 October 2009, Tetsuo Handa wrote:
> Rafael J. Wysocki wrote:
> > > > Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=14258
> > > > Subject		: Memory leak in SCSI initialization
> > > > Submitter	: Tetsuo Handa <penguin-kernel@i-love.sakura.ne.jp>
> > > > Date		: 2009-09-22 4:18 (10 days old)
> > > > References	: http://marc.info/?l=linux-kernel&m=125359311312243&w=4
> > > > Handled-By	: Michael Ellerman <michael@ellerman.id.au>
> > > > Patch		: http://patchwork.kernel.org/patch/49258/
> > 
> > Thanks for the update.
> http://patchwork.kernel.org/patch/49258/ would be replaced by
> an updated patch at http://lkml.org/lkml/2009/10/2/335

Thanks, updated.

Rafael

[Bug #14258] Memory leak in SCSI initialization

[Rafael J. Wysocki]

This message has been generated automatically as a part of a report
of regressions introduced between 2.6.30 and 2.6.31.

The following bug entry is on the current list of known regressions
introduced between 2.6.30 and 2.6.31.  Please verify if it still should
be listed and let me know (either way).


Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=14258
Subject		: Memory leak in SCSI initialization
Submitter	: Tetsuo Handa <penguin-kernel-1yMVhJb1mP/7nzcFbJAaVXf5DAMn2ifp@public.gmane.org>
Date		: 2009-09-22 4:18 (20 days old)
References	: http://marc.info/?l=linux-kernel&m=125359311312243&w=4
Handled-By	: Michael Ellerman <michael-Gsx/Oe8HsFggBc27wqDAHg@public.gmane.org>
		  James Bottomley <James.Bottomley-l3A5Bk7waGM@public.gmane.org>
Patch		: http://patchwork.kernel.org/patch/51412/

[Bug #14258] Memory leak in SCSI initialization

[Rafael J. Wysocki]

This message has been generated automatically as a part of a report
of regressions introduced between 2.6.30 and 2.6.31.

The following bug entry is on the current list of known regressions
introduced between 2.6.30 and 2.6.31.  Please verify if it still should
be listed and let me know (either way).


Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=14258
Subject		: Memory leak in SCSI initialization
Submitter	: Tetsuo Handa <penguin-kernel@i-love.sakura.ne.jp>
Date		: 2009-09-22 4:18 (20 days old)
References	: http://marc.info/?l=linux-kernel&m=125359311312243&w=4
Handled-By	: Michael Ellerman <michael@ellerman.id.au>
		  James Bottomley <James.Bottomley@suse.de>
Patch		: http://patchwork.kernel.org/patch/51412/

Re: [Bug #14258] Memory leak in SCSI initialization

[Tetsuo Handa]

I got below messages in 2.6.32-rc4 .

# dmesg | grep kmemleak
[    7.612391] kmemleak: Kernel memory leak detector initialized
[    7.615675] kmemleak: Automatic memory scanning thread started
[   78.641096] kmemleak: 13 new suspected memory leaks (see /sys/kernel/debug/kmemleak)
# cat /sys/kernel/debug/kmemleak
unreferenced object 0xdac2c478 (size 32):
  comm "swapper", pid 1, jiffies 4294894406
  hex dump (first 32 bytes):
    30 3a 30 3a 32 3a 30 00 5a 5a 5a 5a 5a 5a 5a 5a  0:0:2:0.ZZZZZZZZ
    5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a a5  ZZZZZZZZZZZZZZZ.
  backtrace:
    [<c10d3944>] create_object+0xe4/0x220
    [<c1322663>] kmemleak_alloc+0x83/0xd0
    [<c10d01d4>] __kmalloc+0x1b4/0x220
    [<c11ab450>] kvasprintf+0x30/0x60
    [<c11a3131>] kobject_set_name_vargs+0x21/0x60
    [<c11f8cd9>] dev_set_name+0x19/0x20
    [<c122c2b3>] scsi_sysfs_device_initialize+0xc3/0x120
    [<c1228ac4>] scsi_alloc_sdev+0x194/0x230
    [<c1229b50>] scsi_probe_and_add_lun+0x320/0x340
    [<c122a477>] __scsi_scan_target+0xb7/0x100
    [<c122a5f6>] scsi_scan_channel+0x86/0xa0
    [<c122a6f9>] scsi_scan_host_selected+0xe9/0x150
    [<c122aabc>] do_scsi_scan_host+0x7c/0x80
    [<c122ab6d>] scsi_scan_host+0x8d/0x90
    [<c1520c75>] BusLogic_init+0x355/0x420
    [<c100105c>] do_one_initcall+0x2c/0x1d0
(...snipped...)
unreferenced object 0xdac2cc58 (size 32):
  comm "swapper", pid 1, jiffies 4294894414
  hex dump (first 32 bytes):
    30 3a 30 3a 31 35 3a 30 00 5a 5a 5a 5a 5a 5a 5a  0:0:15:0.ZZZZZZZ
    5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a a5  ZZZZZZZZZZZZZZZ.
  backtrace:
    [<c10d3944>] create_object+0xe4/0x220
    [<c1322663>] kmemleak_alloc+0x83/0xd0
    [<c10d01d4>] __kmalloc+0x1b4/0x220
    [<c11ab450>] kvasprintf+0x30/0x60
    [<c11a3131>] kobject_set_name_vargs+0x21/0x60
    [<c11f8cd9>] dev_set_name+0x19/0x20
    [<c122c2b3>] scsi_sysfs_device_initialize+0xc3/0x120
    [<c1228ac4>] scsi_alloc_sdev+0x194/0x230
    [<c1229b50>] scsi_probe_and_add_lun+0x320/0x340
    [<c122a477>] __scsi_scan_target+0xb7/0x100
    [<c122a5f6>] scsi_scan_channel+0x86/0xa0
    [<c122a6f9>] scsi_scan_host_selected+0xe9/0x150
    [<c122aabc>] do_scsi_scan_host+0x7c/0x80
    [<c122ab6d>] scsi_scan_host+0x8d/0x90
    [<c1520c75>] BusLogic_init+0x355/0x420
    [<c100105c>] do_one_initcall+0x2c/0x1d0

In my environment, 0:0:0:0 and 0:0:1:0 are used by SCSI hard disks, 0:0:7:0 is
reserved. 0:0:X:0 (where X = 2-6, 8-15) are unused and reported as memory leak.

After applying http://patchwork.kernel.org/patch/51412/ , above messages
no longer appears. Please apply that patch to 2.6.32-rcX as well as 2.6.31.Y .

Regards.

[Bug #14258] Memory leak in SCSI initialization

[Rafael J. Wysocki]

This message has been generated automatically as a part of a report
of regressions introduced between 2.6.30 and 2.6.31.

The following bug entry is on the current list of known regressions
introduced between 2.6.30 and 2.6.31.  Please verify if it still should
be listed and let me know (either way).


Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=14258
Subject		: Memory leak in SCSI initialization
Submitter	: Tetsuo Handa <penguin-kernel-1yMVhJb1mP/7nzcFbJAaVXf5DAMn2ifp@public.gmane.org>
Date		: 2009-09-22 4:18 (35 days old)
References	: http://marc.info/?l=linux-kernel&m=125359311312243&w=4
Handled-By	: Michael Ellerman <michael-Gsx/Oe8HsFggBc27wqDAHg@public.gmane.org>
		  James Bottomley <James.Bottomley-l3A5Bk7waGM@public.gmane.org>
Patch		: http://patchwork.kernel.org/patch/51412/

[Bug #14258] Memory leak in SCSI initialization

[Rafael J. Wysocki]

This message has been generated automatically as a part of a report
of regressions introduced between 2.6.30 and 2.6.31.

The following bug entry is on the current list of known regressions
introduced between 2.6.30 and 2.6.31.  Please verify if it still should
be listed and let me know (either way).


Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=14258
Subject		: Memory leak in SCSI initialization
Submitter	: Tetsuo Handa <penguin-kernel@i-love.sakura.ne.jp>
Date		: 2009-09-22 4:18 (35 days old)
References	: http://marc.info/?l=linux-kernel&m=125359311312243&w=4
Handled-By	: Michael Ellerman <michael@ellerman.id.au>
		  James Bottomley <James.Bottomley@suse.de>
Patch		: http://patchwork.kernel.org/patch/51412/

[Bug 14258] Memory leak in SCSI initialization

[bugzilla-daemon]

http://bugzilla.kernel.org/show_bug.cgi?id=14258


Rafael J. Wysocki <rjw@sisk.pl> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|RESOLVED                    |CLOSED
         Resolution|PATCH_ALREADY_AVAILABLE     |CODE_FIX




--- Comment #2 from Rafael J. Wysocki <rjw@sisk.pl>  2009-11-16 23:00:26 ---
Fixed by commit 37e6ba00720c2786330dec2a9a5081e9e049422f .

-- 
Configure bugmail: http://bugzilla.kernel.org/userprefs.cgi?tab=email
------- You are receiving this mail because: -------
You are the assignee for the bug.