linux-kernel - Re: warn_slowpath_common WARNING on boot since 3.0.0-git7

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Date:	Sat, 30 Jul 2011 19:18:55 -0700
From:	Randy Dunlap <rdunlap@...otime.net>
To:	Alessandro Suardi <alessandro.suardi@...il.com>
Cc:	linux-kernel@...r.kernel.org
Subject: Re: warn_slowpath_common WARNING on boot since 3.0.0-git7

On Sat, 30 Jul 2011 17:31:51 +0200 Alessandro Suardi wrote:

> F15 x86_64, still present in 3.0.0-git11; didn't report it earlier as I
>  thought it'd be squashed sooner... probably it's not as common
>  as I thought it'd be:
> 
> Jul 27 18:46:18 duff kernel: WARNING: at fs/proc/base.c:1123
> oom_adjust_write+0x185/0x23c()
> Jul 27 18:46:18 duff kernel: Hardware name: Latitude E6400
> Jul 27 18:46:18 duff kernel: sshd (3245): /proc/3245/oom_adj is
> deprecated, please use /proc/3245/oom_score_adj instead.

Looks like sshd is using a deprecated /proc interface.
fs/proc/base.c:1118 says:
	 * Warn that /proc/pid/oom_adj is deprecated, see
	 * Documentation/feature-removal-schedule.txt.

What else needs to be done here?

> Jul 27 18:46:18 duff kernel: Modules linked in: sunrpc rfcomm bnep
> ip6t_REJECT nf_conntrack_ipv6 ipt_REJECT nf_defrag_ipv6
> nf_conntrack_ipv4 ip6table_filter nf_defrag_ipv4 ip6_tables xt_state
> nf_conntrack iptable_filter ip_tables snd_hda_codec_hdmi
> snd_hda_codec_idt snd_hda_intel snd_hda_codec aes_x86_64 aes_generic
> ecb snd_hwdep btusb snd_seq snd_seq_device bluetooth snd_pcm
> dell_laptop snd_timer snd i2c_i801 rfkill microcode pcspkr joydev
> soundcore snd_page_alloc dcdbas ipv6 autofs4 ext4 jbd2 crc16 sdhci_pci
> firewire_ohci sdhci firewire_core crc_itu_t mmc_core i915
> drm_kms_helper drm i2c_algo_bit i2c_core video [last unloaded:
> scsi_wait_scan]
> Jul 27 18:46:18 duff kernel: Pid: 3245, comm: sshd Not tainted 3.0.0-git7 #6
> Jul 27 18:46:18 duff kernel: Call Trace:
> Jul 27 18:46:18 duff kernel: [<ffffffff8103774c>] warn_slowpath_common+0x7e/0x96
> Jul 27 18:46:18 duff kernel: [<ffffffff810377f8>] warn_slowpath_fmt+0x41/0x43
> Jul 27 18:46:18 duff kernel: [<ffffffff810408f4>] ? ns_capable+0x35/0x4a
> Jul 27 18:46:18 duff kernel: [<ffffffff81129fb8>] oom_adjust_write+0x185/0x23c
> Jul 27 18:46:18 duff kernel: [<ffffffff810e0736>] vfs_write+0xa3/0xca
> Jul 27 18:46:18 duff kernel: [<ffffffff8109176f>] ?
> trace_hardirqs_on_caller+0xe/0x22
> Jul 27 18:46:18 duff kernel: [<ffffffff810e08d2>] sys_write+0x45/0x69
> Jul 27 18:46:18 duff kernel: [<ffffffff813752fb>] system_call_fastpath+0x16/0x1b


---
~Randy
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