From: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
To: Jiri Slaby <jslaby@suse.cz>
Cc: linux-kernel@vger.kernel.org, stable@vger.kernel.org,
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Ben Hutchings <ben.hutchings@codethink.co.uk>
Subject: Re: [PATCH 4.9 27/33] futex: Remove duplicated code and fix undefined behaviour
Date: Fri, 18 May 2018 11:01:41 +0200 [thread overview]
Message-ID: <20180518090141.GA10227@kroah.com> (raw)
In-Reply-To: <e8dc5f94-3b52-dcf0-3b5e-b442bde7d803@suse.cz>
On Fri, May 18, 2018 at 10:30:24AM +0200, Jiri Slaby wrote:
> On 05/18/2018, 10:16 AM, Greg Kroah-Hartman wrote:
> > 4.9-stable review patch. If anyone has any objections, please let me know.
> >
> > ------------------
> >
> > From: Jiri Slaby <jslaby@suse.cz>
> >
> > commit 30d6e0a4190d37740e9447e4e4815f06992dd8c3 upstream.
> ...
> > --- a/kernel/futex.c
> > +++ b/kernel/futex.c
> > @@ -1458,6 +1458,45 @@ out:
> > return ret;
> > }
> >
> > +static int futex_atomic_op_inuser(unsigned int encoded_op, u32 __user *uaddr)
> > +{
> > + unsigned int op = (encoded_op & 0x70000000) >> 28;
> > + unsigned int cmp = (encoded_op & 0x0f000000) >> 24;
> > + int oparg = sign_extend32((encoded_op & 0x00fff000) >> 12, 12);
> > + int cmparg = sign_extend32(encoded_op & 0x00000fff, 12);
>
> 12 is wrong here – wherever you apply this, you need also a follow-up fix:
> commit d70ef22892ed6c066e51e118b225923c9b74af34
> Author: Jiri Slaby <jslaby@suse.cz>
> Date: Thu Nov 30 15:35:44 2017 +0100
>
> futex: futex_wake_op, fix sign_extend32 sign bits
Thanks for letting me know, I've now queued it up to the needed trees.
greg k-h
next prev parent reply other threads:[~2018-05-18 9:02 UTC|newest]
Thread overview: 40+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-05-18 8:15 [PATCH 4.9 00/33] 4.9.101-stable review Greg Kroah-Hartman
2018-05-18 8:15 ` [PATCH 4.9 01/33] 8139too: Use disable_irq_nosync() in rtl8139_poll_controller() Greg Kroah-Hartman
2018-05-18 8:15 ` [PATCH 4.9 02/33] bridge: check iface upper dev when setting master via ioctl Greg Kroah-Hartman
2018-05-18 8:15 ` [PATCH 4.9 03/33] dccp: fix tasklet usage Greg Kroah-Hartman
2018-05-18 8:15 ` [PATCH 4.9 04/33] ipv4: fix memory leaks in udp_sendmsg, ping_v4_sendmsg Greg Kroah-Hartman
2018-05-18 8:15 ` [PATCH 4.9 05/33] llc: better deal with too small mtu Greg Kroah-Hartman
2018-05-18 8:15 ` [PATCH 4.9 06/33] net: ethernet: sun: niu set correct packet size in skb Greg Kroah-Hartman
2018-05-18 8:15 ` [PATCH 4.9 07/33] net: ethernet: ti: cpsw: fix packet leaking in dual_mac mode Greg Kroah-Hartman
2018-05-18 8:15 ` [PATCH 4.9 08/33] net/mlx4_en: Verify coalescing parameters are in range Greg Kroah-Hartman
2018-05-18 8:15 ` [PATCH 4.9 09/33] net/mlx5: E-Switch, Include VF RDMA stats in vport statistics Greg Kroah-Hartman
2018-05-18 8:15 ` [PATCH 4.9 10/33] net_sched: fq: take care of throttled flows before reuse Greg Kroah-Hartman
2018-05-18 8:15 ` [PATCH 4.9 11/33] net: support compat 64-bit time in {s,g}etsockopt Greg Kroah-Hartman
2018-05-18 8:15 ` [PATCH 4.9 12/33] openvswitch: Dont swap table in nlattr_set() after OVS_ATTR_NESTED is found Greg Kroah-Hartman
2018-05-18 8:15 ` [PATCH 4.9 13/33] qmi_wwan: do not steal interfaces from class drivers Greg Kroah-Hartman
2018-05-18 8:15 ` [PATCH 4.9 14/33] r8169: fix powering up RTL8168h Greg Kroah-Hartman
2018-05-18 8:15 ` [PATCH 4.9 15/33] sctp: handle two v4 addrs comparison in sctp_inet6_cmp_addr Greg Kroah-Hartman
2018-05-18 8:15 ` [PATCH 4.9 16/33] sctp: remove sctp_chunk_put from fail_mark err path in sctp_ulpevent_make_rcvmsg Greg Kroah-Hartman
2018-05-18 8:15 ` [PATCH 4.9 17/33] sctp: use the old asoc when making the cookie-ack chunk in dupcook_d Greg Kroah-Hartman
2018-05-18 8:15 ` [PATCH 4.9 18/33] tcp_bbr: fix to zero idle_restart only upon S/ACKed data Greg Kroah-Hartman
2018-05-18 8:15 ` [PATCH 4.9 19/33] tg3: Fix vunmap() BUG_ON() triggered from tg3_free_consistent() Greg Kroah-Hartman
2018-05-18 8:15 ` [PATCH 4.9 20/33] bonding: do not allow rlb updates to invalid mac Greg Kroah-Hartman
2018-05-18 8:16 ` [PATCH 4.9 21/33] net/mlx5: Avoid cleaning flow steering table twice during error flow Greg Kroah-Hartman
2018-05-18 8:16 ` [PATCH 4.9 22/33] bonding: send learning packets for vlans on slave Greg Kroah-Hartman
2018-05-18 8:16 ` [PATCH 4.9 23/33] tcp: ignore Fast Open on repair mode Greg Kroah-Hartman
2018-05-18 8:16 ` [PATCH 4.9 24/33] sctp: fix the issue that the cookie-ack with auth cant get processed Greg Kroah-Hartman
2018-05-18 8:16 ` [PATCH 4.9 25/33] sctp: delay the authentication for the duplicated cookie-echo chunk Greg Kroah-Hartman
2018-05-18 8:16 ` [PATCH 4.9 26/33] serial: sccnxp: Fix error handling in sccnxp_probe() Greg Kroah-Hartman
2018-05-18 8:16 ` [PATCH 4.9 27/33] futex: Remove duplicated code and fix undefined behaviour Greg Kroah-Hartman
2018-05-18 8:30 ` Jiri Slaby
2018-05-18 9:01 ` Greg Kroah-Hartman [this message]
2018-05-18 8:16 ` [PATCH 4.9 28/33] xfrm: fix xfrm_do_migrate() with AEAD e.g(AES-GCM) Greg Kroah-Hartman
2018-05-18 8:16 ` [PATCH 4.9 29/33] lockd: lost rollback of set_grace_period() in lockd_down_net() Greg Kroah-Hartman
2018-05-18 8:16 ` [PATCH 4.9 30/33] Revert "ARM: dts: imx6qdl-wandboard: Fix audio channel swap" Greg Kroah-Hartman
2018-05-18 8:16 ` [PATCH 4.9 31/33] l2tp: revert "l2tp: fix missing print session offset info" Greg Kroah-Hartman
2018-05-18 8:16 ` [PATCH 4.9 32/33] nfp: TX time stamp packets before HW doorbell is rung Greg Kroah-Hartman
2018-05-18 8:16 ` [PATCH 4.9 33/33] proc: do not access cmdline nor environ from file-backed areas Greg Kroah-Hartman
2018-05-18 13:20 ` [PATCH 4.9 00/33] 4.9.101-stable review Guenter Roeck
2018-05-18 14:05 ` kernelci.org bot
2018-05-18 19:02 ` Naresh Kamboju
2018-05-18 20:47 ` Shuah Khan
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