On Thu, 15 Aug 2013 08:41:12 +0900 (JST) Ryusuke Konishi <konishi.ryusuke@xxxxxxxxxxxxx> wrote: > On Wed, 14 Aug 2013 16:00:01 -0700, Andrew Morton wrote: > > On Wed, 14 Aug 2013 01:51:48 +0900 (JST) Ryusuke Konishi <konishi.ryusuke@xxxxxxxxxxxxx> wrote: > > > >> On Tue, 13 Aug 2013 17:50:33 +0400, Vyacheslav Dubeyko wrote: > >> > From: Vyacheslav Dubeyko <slava@xxxxxxxxxxx> > >> > Subject: [PATCH v3 1/2] nilfs2: remove double bio_put() in nilfs_end_bio_write() for BIO_EOPNOTSUPP error > >> > > >> > This patch removes double call of bio_put() in nilfs_end_bio_write() > >> > for the case of BIO_EOPNOTSUPP error detection. The issue was found > >> > by Dan Carpenter and he suggests first version of the fix too. > >> > > >> > Reported-by: Dan Carpenter <dan.carpenter@xxxxxxxxxx> > >> > Signed-off-by: Vyacheslav Dubeyko <slava@xxxxxxxxxxx> > >> > CC: Ryusuke Konishi <konishi.ryusuke@xxxxxxxxxxxxx> > >> > >> Acked-by: Ryusuke Konishi <konishi.ryusuke@xxxxxxxxxxxxx> > >> Tested-by: Ryusuke Konishi <konishi.ryusuke@xxxxxxxxxxxxx> > >> > >> I tested this patch by inserting a pseudo EOPNOTSUPP error, and this > >> actually fixed a crach "kernel BUG at fs/bio.c:498!" due to reference > >> count underflow of bio_put() that nilfs_end_bio_write() induced. > >> > >> > >> Andrew, please pick up this bug-fix preferably for this cycle. > > > > Should we apply the fix to earlier kernel versions and if so, how > > far back in time does it go? > > Yes, I think it should also be applied to earlier versions. > > I looked back ealiear versions. > > This bug, unfortunately, comes from the original version (2.6.30), and > the patch could be applied to all versions. OK. And what about nilfs2-fix-issue-with-counting-number-of-bio-requests-for-bio_eopnotsupp-error-detection.patch? -- To unsubscribe from this list: send the line "unsubscribe kernel-janitors" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
