All of lore.kernel.org
 help / color / mirror / Atom feed
From: Zhouping Liu <zliu@redhat.com>
To: linux-mm@kvack.org, LKML <linux-kernel@vger.kernel.org>
Cc: Mel Gorman <mgorman@suse.de>
Subject: WARNING: CPU: 8 PID: 12860 at net/core/sock.c:313 sk_clear_memalloc+0x49/0x70()
Date: Mon, 11 Nov 2013 22:16:23 -0500 (EST)	[thread overview]
Message-ID: <988917896.22733181.1384226183266.JavaMail.root@redhat.com> (raw)
In-Reply-To: <732806765.22731241.1384225623693.JavaMail.root@redhat.com>

Hi All,

I found the WARNING in the latest mainline with commint 8b5baa460b.

[61323.305424] ------------[ cut here ]------------
[61323.310562] WARNING: CPU: 8 PID: 12860 at net/core/sock.c:313 sk_clear_memalloc+0x49/0x70()
[61323.319779] Modules linked in: rpcsec_gss_krb5 nfsv4 dns_resolver nfs fscache sg nfsd netxen_nic hpilo sp5100_tco auth_rpcgss hpwdt amd64_edac_mod edac_mce_amd microcode pcspkr shpchp serio_raw i2c_piix4 edac_core ipmi_si k10temp nfs_acl lockd ipmi_msghandler acpi_power_meter acpi_cpufreq sunrpc xfs libcrc32c radeon i2c_algo_bit drm_kms_helper ttm sd_mod crc_t10dif ata_generic crct10dif_common drm pata_acpi ahci libahci pata_atiixp libata i2c_core hpsa dm_mirror dm_region_hash dm_log dm_mod
[61323.368625] CPU: 8 PID: 12860 Comm: swapoff Not tainted 3.12.0+ #1
[61323.375452] Hardware name: HP ProLiant DL585 G7, BIOS A16 12/17/2012
[61323.382463]  0000000000000009 ffff882dfce43e68 ffffffff816204b7 0000000000000000
[61323.390692]  ffff882dfce43ea0 ffffffff8106495d ffff88190b551d00 ffff88080ff0b600
[61323.398940]  ffff88080ff0b650 0000000000000001 ffff880810fe64a0 ffff882dfce43eb0
[61323.407188] Call Trace:
[61323.409916]  [] dump_stack+0x45/0x56
[61323.415616]  [] warn_slowpath_common+0x7d/0xa0
[61323.422257]  [] warn_slowpath_null+0x1a/0x20
[61323.428705]  [] sk_clear_memalloc+0x49/0x70
[61323.435094]  [] xs_swapper+0x41/0x60 [sunrpc]
[61323.441671]  [] nfs_swap_deactivate+0x2d/0x30 [nfs]
[61323.448796]  [] destroy_swap_extents+0x61/0x70
[61323.455436]  [] SyS_swapoff+0x220/0x610
[61323.461420]  [] ? do_page_fault+0x1a/0x70
[61323.467582]  [] system_call_fastpath+0x16/0x1b
[61323.474215] ---[ end trace 919f685513b38356 ]---

I found the warning during doing swapoff the swap over NFS mount, so if you need to reproduce it,
you should do the following:
1. Open CONFIG_NFS_SWAP in testing machine
2. Create a NFS server, and create a swap file in NFS server
   in NFS server: # dd if=/dev/zero of=/NFS_FOLDER/swapfile bs=1M count=1024; mkswap swapfile
3. Inside testing machine, setup a swap over NFS, then swapoff it, the swapoff action will
   trigger the WARNING.

-- 
Thanks,
Zhouping

--
To unsubscribe, send a message with 'unsubscribe linux-mm' in
the body to majordomo@kvack.org.  For more info on Linux MM,
see: http://www.linux-mm.org/ .
Don't email: <a href=mailto:"dont@kvack.org"> email@kvack.org </a>

WARNING: multiple messages have this Message-ID (diff)
From: Zhouping Liu <zliu@redhat.com>
To: linux-mm@kvack.org, LKML <linux-kernel@vger.kernel.org>
Cc: Mel Gorman <mgorman@suse.de>
Subject: WARNING: CPU: 8 PID: 12860 at net/core/sock.c:313 sk_clear_memalloc+0x49/0x70()
Date: Mon, 11 Nov 2013 22:16:23 -0500 (EST)	[thread overview]
Message-ID: <988917896.22733181.1384226183266.JavaMail.root@redhat.com> (raw)
In-Reply-To: <732806765.22731241.1384225623693.JavaMail.root@redhat.com>

Hi All,

I found the WARNING in the latest mainline with commint 8b5baa460b.

[61323.305424] ------------[ cut here ]------------
[61323.310562] WARNING: CPU: 8 PID: 12860 at net/core/sock.c:313 sk_clear_memalloc+0x49/0x70()
[61323.319779] Modules linked in: rpcsec_gss_krb5 nfsv4 dns_resolver nfs fscache sg nfsd netxen_nic hpilo sp5100_tco auth_rpcgss hpwdt amd64_edac_mod edac_mce_amd microcode pcspkr shpchp serio_raw i2c_piix4 edac_core ipmi_si k10temp nfs_acl lockd ipmi_msghandler acpi_power_meter acpi_cpufreq sunrpc xfs libcrc32c radeon i2c_algo_bit drm_kms_helper ttm sd_mod crc_t10dif ata_generic crct10dif_common drm pata_acpi ahci libahci pata_atiixp libata i2c_core hpsa dm_mirror dm_region_hash dm_log dm_mod
[61323.368625] CPU: 8 PID: 12860 Comm: swapoff Not tainted 3.12.0+ #1
[61323.375452] Hardware name: HP ProLiant DL585 G7, BIOS A16 12/17/2012
[61323.382463]  0000000000000009 ffff882dfce43e68 ffffffff816204b7 0000000000000000
[61323.390692]  ffff882dfce43ea0 ffffffff8106495d ffff88190b551d00 ffff88080ff0b600
[61323.398940]  ffff88080ff0b650 0000000000000001 ffff880810fe64a0 ffff882dfce43eb0
[61323.407188] Call Trace:
[61323.409916]  [] dump_stack+0x45/0x56
[61323.415616]  [] warn_slowpath_common+0x7d/0xa0
[61323.422257]  [] warn_slowpath_null+0x1a/0x20
[61323.428705]  [] sk_clear_memalloc+0x49/0x70
[61323.435094]  [] xs_swapper+0x41/0x60 [sunrpc]
[61323.441671]  [] nfs_swap_deactivate+0x2d/0x30 [nfs]
[61323.448796]  [] destroy_swap_extents+0x61/0x70
[61323.455436]  [] SyS_swapoff+0x220/0x610
[61323.461420]  [] ? do_page_fault+0x1a/0x70
[61323.467582]  [] system_call_fastpath+0x16/0x1b
[61323.474215] ---[ end trace 919f685513b38356 ]---

I found the warning during doing swapoff the swap over NFS mount, so if you need to reproduce it,
you should do the following:
1. Open CONFIG_NFS_SWAP in testing machine
2. Create a NFS server, and create a swap file in NFS server
   in NFS server: # dd if=/dev/zero of=/NFS_FOLDER/swapfile bs=1M count=1024; mkswap swapfile
3. Inside testing machine, setup a swap over NFS, then swapoff it, the swapoff action will
   trigger the WARNING.

-- 
Thanks,
Zhouping

       reply	other threads:[~2013-11-12  3:16 UTC|newest]

Thread overview: 4+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
     [not found] <732806765.22731241.1384225623693.JavaMail.root@redhat.com>
2013-11-12  3:16 ` Zhouping Liu [this message]
2013-11-12  3:16   ` WARNING: CPU: 8 PID: 12860 at net/core/sock.c:313 sk_clear_memalloc+0x49/0x70() Zhouping Liu
2013-11-12  7:45   ` Zhouping Liu
2013-11-12  7:45     ` Zhouping Liu

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=988917896.22733181.1384226183266.JavaMail.root@redhat.com \
    --to=zliu@redhat.com \
    --cc=linux-kernel@vger.kernel.org \
    --cc=linux-mm@kvack.org \
    --cc=mgorman@suse.de \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body. 
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.