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SubjectRe: [GIT] Networking
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On Mon, Feb 9, 2015 at 7:16 PM, David Miller <davem@davemloft.net> wrote:
>
> 1) More iov_iter conversion work from Al Viro.
> ...
>
> are available in the git repository at:
>
> git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next

I pulled, but had to unpull.

This doesn't work for me AT ALL.

I get an oops early during boot (in "systemd-cryptse.." - it happens
immediately after typing in my disk encryption key so it's
possible/likely that you need an md-crypt setup to see this).

It's a NULL pointer derefernce (at offset 0x18) where the callchain
looks like this:

RIP: skcipher_recvmsg+0x360/0x410
Call Trace:
sock_read_iter+0xd0/0x120
new_sync_read+0x79/0xb0
__vfs_read+0x13/0x50
SyS_read+0x41/0x0b0
system_call_fastpath

which I assume is related to the iov_iter conversion.

That oops then is followed immediately by another that is a NULL
pointer dereference in skcipher_sock_destruct, but the callchain for
that is just the exit as part of killing of the original oops, so that
second oops seems to be just a result of the first one.

I'm assuming the culrpit is 1d10eb2f156f ("crypto: switch
af_alg_make_sg() to iov_iter") but haven't tested.

Sorry for the lack of full dmesg, but the oops happens before the
system is actually usable, so I just have a camera screenshot of it.

Any ideas?

Linus


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