linux-kernel - RE: Software encryption at fscrypt causing the filesystem access unresponsive

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Message-ID: <08079d01e25748108aedb95a3c30e5e7@quicinc.com>
Date: Thu, 25 Jul 2024 07:21:36 +0000
From: "Yuvaraj Ranganathan (QUIC)" <quic_yrangana@...cinc.com>
To: Theodore Ts'o <tytso@....edu>,
        "linux-fscrypt@...r.kernel.org"
	<linux-fscrypt@...r.kernel.org>,
        "linux-fsdevel@...r.kernel.org"
	<linux-fsdevel@...r.kernel.org>,
        "linux-kernel@...r.kernel.org"
	<linux-kernel@...r.kernel.org>
Subject: RE: Software encryption at fscrypt causing the filesystem access
 unresponsive

Hello Ted,

I don't see fast_commit feature is enabled for this filesystem.

Here are the filesystem features enabled for that disk partition,

Filesystem features: 
has_journal ext_attr resize_inode dir_index stable_inodes filetype needs_recovery extent 64bit flex_bg encrypt sparse_super large_file huge_file dir_nlink extra_isize metadata_csum

Thanks,
Yuvaraj.

-----Original Message-----
From: Theodore Ts'o <tytso@....edu> 
Sent: Wednesday, July 24, 2024 9:52 PM
To: Yuvaraj Ranganathan <yrangana@....qualcomm.com>
Cc: linux-fscrypt@...r.kernel.org; linux-fsdevel@...r.kernel.org; linux-kernel@...r.kernel.org
Subject: Re: Software encryption at fscrypt causing the filesystem access unresponsive

WARNING: This email originated from outside of Qualcomm. Please be wary of any links or attachments, and do not enable macros.

On Wed, Jul 24, 2024 at 02:21:26PM +0000, Yuvaraj Ranganathan wrote:
> Hello developers,
>
> We are trying to validate a Software file based encryption with 
> standard key by disabling Inline encryption and we are observing the 
> adb session is hung.  We are not able to access the same filesystem at 
> that moment.

The stack trace seems to indicate that the fast_commit feature is enabled.  That's a relatively new feature; can you replicate the hang without fast_commit being enabled?

                                                - Ted