linux-ext4 - [Bug 215225] FUZZ: Page fault and infinite loop after mount and operate on crafted image

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Date:   Fri, 24 Dec 2021 21:50:06 +0000
From:   bugzilla-daemon@...zilla.kernel.org
To:     linux-ext4@...r.kernel.org
Subject: [Bug 215225] FUZZ: Page fault and infinite loop after mount and
 operate on crafted image

https://bugzilla.kernel.org/show_bug.cgi?id=215225

Qinghua Jin (qhjin_dev@....com) changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |qhjin_dev@....com

--- Comment #1 from Qinghua Jin (qhjin_dev@....com) ---
It seems that the tmp38.img is corrupt. Could you please send a correct one?

$ e2fsck tmp38.img 
e2fsck 1.45.7 (28-Jan-2021)
ext2fs_open2: The ext2 superblock is corrupt
e2fsck: Superblock invalid, trying backup blocks...
tmp38.img contains a file system with errors, check forced.
Resize inode not valid.  Recreate<y>? yes
Pass 1: Checking inodes, blocks, and sizes
Root inode has dtime set (probably due to old mke2fs).  Fix<y>? yes
Inode 13 has an invalid extent
        (logical block 0, invalid physical block 8332801, len 1)
Clear<y>? yes
Inode 13 has an invalid extent
        (logical block 0, invalid physical block 64344, len 1)
Clear<y>? yes


Thanks,
Qinghua Jin

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