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List:       grub-bug
Subject:    [bug #60565] GRUB 2.06-rc1 doesn't detect a FAT filesystem
From:       Pawel Veselov <INVALID.NOREPLY () gnu ! org>
Date:       2022-05-30 16:02:43
Message-ID: 20220530-160242.sv314054.85667 () savannah ! gnu ! org
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Follow-up Comment #3, bug #60565 (project grub):

I ran into this today. The EFI file system itself wasn't readable. The reason
was some corruption, fsck created a bunch of FSCKxxx.REC files with zero
timestamps. This made this check fail:

fat.c

      if (info.mtimeset == 0)
	grub_error (GRUB_ERR_OUT_OF_RANGE,
		    "invalid modification timestamp for %s", path);


Deleting the files "fixed" this, and I didn't dig any further. I think the
code checks the timestamp on /, so maybe that was corrupted, and deleting
files just updated the timestamp. I  didn't have enough patience trying to
reproduce this by meddling with timestamps.


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