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From: Steven Rostedt <rostedt@goodmis.org>
To: Sven Schnelle <svens@linux.ibm.com>
Cc: Ritesh Harjani <riteshh@linux.ibm.com>,
	linux-ext4@vger.kernel.org, Jan Kara <jack@suse.cz>,
	"Theodore Ts'o" <tytso@mit.edu>,
	Harshad Shirwadkar <harshadshirwadkar@gmail.com>,
	linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org,
	stable@kernel.org, hca@linux.ibm.com
Subject: Re: [PATCHv3 02/10] ext4: Fix ext4_fc_stats trace point
Date: Thu, 17 Mar 2022 14:38:46 -0400	[thread overview]
Message-ID: <20220317143846.7148d0cb@gandalf.local.home> (raw)
In-Reply-To: <yt9d1qz05zk1.fsf@linux.ibm.com>

On Thu, 17 Mar 2022 17:11:42 +0100
Sven Schnelle <svens@linux.ibm.com> wrote:


> Looking at the oops output again made me realizes that the snprintf
> tries to write into pages that are mapped RO. Talking to Heiko he
> mentioned that s390 maps rodata/text RO when setting up the initial
> mapping while x86 has a RW mapping in the beginning and changes that
> later to RO. I haven't verified that, but that might be a reason why it
> works on x86.
> 

Yes, I discovered this too. I'm currently looking to see how to fix it.

-- Steve

  parent reply	other threads:[~2022-03-17 18:38 UTC|newest]

Thread overview: 27+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-03-12  5:39 [PATCHv3 00/10] ext4: Improve FC trace events Ritesh Harjani
2022-03-12  5:39 ` [PATCHv3 01/10] ext4: Remove unused enum EXT4_FC_COMMIT_FAILED Ritesh Harjani
2022-03-12  5:39 ` [PATCHv3 02/10] ext4: Fix ext4_fc_stats trace point Ritesh Harjani
2022-03-12 15:13   ` Steven Rostedt
2022-03-17 12:01   ` Sven Schnelle
2022-03-17 14:50     ` Ritesh Harjani
2022-03-17 15:22       ` Sven Schnelle
2022-03-17 16:00         ` Steven Rostedt
2022-03-17 16:11       ` Sven Schnelle
2022-03-17 17:43         ` Nathan Chancellor
2022-03-18  4:14           ` Ritesh Harjani
2022-03-18 15:32             ` Nathan Chancellor
2022-03-17 18:38         ` Steven Rostedt [this message]
2022-03-17 18:39     ` Steven Rostedt
2022-03-18 16:30       ` Steven Rostedt
2022-03-19  5:04         ` Ritesh Harjani
2022-03-12  5:39 ` [PATCHv3 03/10] ext4: Convert ext4_fc_track_dentry type events to use event class Ritesh Harjani
2022-03-12  5:39 ` [PATCHv3 04/10] ext4: Do not call FC trace event in ext4_fc_commit() if FS does not support FC Ritesh Harjani
2022-03-12  5:39 ` [PATCHv3 05/10] ext4: Return early for non-eligible fast_commit track events Ritesh Harjani
2022-03-15 21:43   ` Theodore Ts'o
2022-03-16  3:55     ` Ritesh Harjani
2022-03-12  5:39 ` [PATCHv3 06/10] ext4: Add new trace event in ext4_fc_cleanup Ritesh Harjani
2022-03-12  5:39 ` [PATCHv3 07/10] ext4: Add transaction tid info in fc_track events Ritesh Harjani
2022-03-12  5:39 ` [PATCHv3 08/10] ext4: Add commit_tid info in jbd debug log Ritesh Harjani
2022-03-12  5:39 ` [PATCHv3 09/10] ext4: Add commit tid info in ext4_fc_commit_start/stop trace events Ritesh Harjani
2022-03-12  5:39 ` [PATCHv3 10/10] ext4: Fix remaining two trace events to use same printk convention Ritesh Harjani
2022-03-13  4:45 ` [PATCHv3 00/10] ext4: Improve FC trace events Theodore Ts'o

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