Bug 215709 - kernel deadlocks while mounting the image
Summary: kernel deadlocks while mounting the image
Status: RESOLVED CODE_FIX
Alias: None
Product: File System
Classification: Unclassified
Component: f2fs (show other bugs)
Hardware: All Linux
: P1 normal
Assignee: Default virtual assignee for f2fs
URL:
Keywords:
Depends on:
Blocks:
 
Reported: 2022-03-21 10:54 UTC by bughunter
Modified: 2022-03-25 22:18 UTC (History)
1 user (show)

See Also:
Kernel Version: 5.15.4
Subsystem:
Regression: No
Bisected commit-id:

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Description bughunter 2022-03-21 10:54:32 UTC 
I have created an image with mkfs.f2fs, and modified some of the metadata of the image. Unfortunately, when I tried to mount the image with a loop device, the kernel deadlocked. I have attempted many ways to stop the mount process, even executed a 'kill' command, but they are failed, only what I can do is to reboot the system. Can anyone tell me why the kernel deadlocked, and how can I fix this problem?

I have upload the image to the Google Drive (https://drive.google.com/file/d/1DBwKP0-MpkD3eHPTluz3KPcxbdZAw06t/view?usp=sharing). Looking forward to getting a reply :)
Comment 1 Chao Yu 2022-03-21 15:26:14 UTC 
Hi, thanks for the report.

I've figured out a patch to fix this, could you please verify with it?

https://lore.kernel.org/linux-f2fs-devel/20220321152211.5656-1-chao@kernel.org/T/#u

Thanks,
Comment 2 bughunter 2022-03-22 04:01:50 UTC 
Thank you for prompt reply! I have tried this patch, and it seems that the bug has been fixed.
Comment 3 Chao Yu 2022-03-25 22:18:45 UTC 
Thanks for the test. ;)
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