There's a broken, ie. inaccessible and unerasable file on my f2fs
partition (2nd partition with 21GB on a Corsair Flash Voyager GT USB 3.0
32GB). ls reports:

 >cannot access shared.h: Input/output error
 >total 0
 >-????????? ? ? ? ?            ? shared.h

The file has been on the partition for a couple of months already. I
didn't report sooner as I could/can move its folder (but not the file
itself) where it doesn't bug me and it doesn't appear to affect anything
else.

(I'm currently running Linux v3.12-rc5 with post-3.12 f2fs patches
applied manually.)

The partition is used primarily to store source code and as cache for
ccache. I don't recall ever fiddling with this file directly; it
probably happened during updating its repository or deleting just that.

f2fs-tools's fsck (current git 2ad1fcd800) doesn't appear to do anything
and aborts after some 30 seconds with:

 >Info: sector size = 512
 >Info: total sectors = 42106880 (in 512bytes)
 >[fsck_chk_node_blk: 195] block addr [0xa40ae59]
 >
 >Assertion failed!
 >[fsck_chk_node_blk: 195] ni.blk_addr < F2FS_RAW_SUPER(sbi)->block_count

If you would like me to post further info, please tell me which; I've
got no idea how to further debug this.

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