On Fri, Aug 14, 2015 at 11:02:14AM +0000, bugzilla-daemon@xxxxxxxxxxxxxxxxxxx wrote: > https://bugzilla.kernel.org/show_bug.cgi?id=101011 > > I can also confirm that this bug is present in latest stable kernel (4.1.5) and > reverting commit from comment 6 seems to fix it. Christoph, I've since gotten two reports from users that reverting your commit: "08439fec266c3: ext4: remove block_device_ejected" fixes a crash when a USB stick is yanked from their system. Looking at the reported stack dump, it looks like the crash is happening in account_page_dirtied() when it updates some bdi-specific statistics. I haven't been paying attention to the recent changes in how bdi gets torn down after the device gets removed, and in fact finding the recent changes wasn't obvioius enough after doing a brief search, but it seems to me that if reverting this patch is making any kind of differences, then the assertion in the commit description: bdi->dev now never goes away, so this function became useless. it implies that bdi->dev *does* become NULL, and checking for this is useful. In any case, I don't see any harm in reverting this commit; what do you think? Thanks, - Ted -- To unsubscribe from this list: send the line "unsubscribe linux-scsi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
