lists  /  announce  owl-users  owl-dev  john-users  john-dev  passwdqc-users  yescrypt  popa3d-users  /  oss-security  kernel-hardening  musl  sabotage  tlsify  passwords  /  crypt-dev  xvendor  /  Bugtraq  Full-Disclosure  linux-kernel  linux-netdev  linux-ext4  PHC 
Open Source and information security mailing list archives
Hash Suite: Windows password security audit tool. GUI, reports in PDF.
[<prev] [next>] [<thread-prev] [day] [month] [year] [list]
Date:	Sat, 17 Oct 2015 22:30:24 -0400
From:	Theodore Ts'o <>
To:	Daeho Jeong <>
Subject: Re: [PATCH] ext4: fix xfstest generic/269 double revoked buffer bug

On Thu, Oct 15, 2015 at 09:23:18AM +0900, Daeho Jeong wrote:
> When you repeatly execute xfstest generic/269 with bigalloc_1k option
> enabled using the below command:
> "./kvm-xfstests -c bigalloc_1k -m nodelalloc -C 1000 generic/269"
> you can easily see the below bug message.
> "JBD2 unexpected failure: jbd2_journal_revoke: !buffer_revoked(bh);"
> This means that an already revoked buffer is erroneously revoked again
> and it is caused by doing revoke for the buffer at the wrong position
> in ext4_free_blocks(). We need to re-position the buffer revoke
> procedure for an unspecified buffer after checking the cluster boundary
> for bigalloc option. If not, some part of the cluster can be doubly
> revoked.
> Signed-off-by: Daeho Jeong <>

Thanks, applied.

						- Ted
To unsubscribe from this list: send the line "unsubscribe linux-ext4" in
the body of a message to
More majordomo info at

Powered by blists - more mailing lists