[Bug 200423] Out-of-bound access in f2fs_get_dnode_of_data() when operating file on an f2fs image

[Bug 200423] Out-of-bound access in f2fs_get_dnode_of_data() when operating file on an f2fs image

[bugzilla-daemon]

https://bugzilla.kernel.org/show_bug.cgi?id=200423

Chao Yu (chao@kernel.org) changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
                 CC|                            |chao@kernel.org
          Component|Other                       |f2fs
         Resolution|---                         |CODE_FIX
           Assignee|fs_other@kernel-bugs.osdl.o |linux-f2fs-devel@lists.sour
                   |rg                          |ceforge.net

--- Comment #4 from Chao Yu (chao@kernel.org) ---
After disableing CONFIG_F2FS_CHECK_FS and do retest, below dmesg was printed:

[ 2549.717979] F2FS-fs (loop0): Invalid log blocks per segment (8)
[ 2549.717987] F2FS-fs (loop0): Can't find valid F2FS filesystem in 2th
superblock
[ 2549.718721] F2FS-fs (loop0): invalid crc_offset: 30716
[ 2549.718729] F2FS-fs (loop0): Wrong cp_pack_start_sum: 4194305
[ 2549.718738] F2FS-fs (loop0): Failed to get valid F2FS checkpoint


So I think it has been fixed by below commit:

https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=e494c2f995d6181d6e29c4927d68e0f295ecf75b

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