- Linux-stable-mirror - lists.linaro.org

[Linux-stable-mirror] Patch "net: mvpp2: fix the txq_init error path" has been added to the 4.14-stable tree

by gregkh＠linuxfoundation.org

This is a note to let you know that I've just added the patch titled net: mvpp2: fix the txq_init error path to the 4.14-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=sum… The filename of the patch is: net-mvpp2-fix-the-txq_init-error-path.patch and it can be found in the queue-4.14 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable(a)vger.kernel.org> know about it. >From foo@baz Thu Feb 1 13:45:42 CET 2018 From: Antoine Tenart <antoine.tenart(a)free-electrons.com> Date: Tue, 28 Nov 2017 14:19:48 +0100 Subject: net: mvpp2: fix the txq_init error path From: Antoine Tenart <antoine.tenart(a)free-electrons.com> [ Upstream commit ba2d8d887d962c2f790e6dc01b2fd25b4608720b ] When an allocation in the txq_init path fails, the allocated buffers end-up being freed twice: in the txq_init error path, and in txq_deinit. This lead to issues as txq_deinit would work on already freed memory regions: kernel BUG at mm/slub.c:3915! Internal error: Oops - BUG: 0 [#1] PREEMPT SMP This patch fixes this by removing the txq_init own error path, as the txq_deinit function is always called on errors. This was introduced by TSO as way more buffers are allocated. Fixes: 186cd4d4e414 ("net: mvpp2: software tso support") Signed-off-by: Antoine Tenart <antoine.tenart(a)free-electrons.com> Signed-off-by: David S. Miller <davem(a)davemloft.net> Signed-off-by: Sasha Levin <alexander.levin(a)verizon.com> Signed-off-by: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> --- drivers/net/ethernet/marvell/mvpp2.c | 20 ++------------------ 1 file changed, 2 insertions(+), 18 deletions(-) --- a/drivers/net/ethernet/marvell/mvpp2.c +++ b/drivers/net/ethernet/marvell/mvpp2.c @@ -5597,7 +5597,7 @@ static int mvpp2_txq_init(struct mvpp2_p sizeof(*txq_pcpu->buffs), GFP_KERNEL); if (!txq_pcpu->buffs) - goto cleanup; + return -ENOMEM; txq_pcpu->count = 0; txq_pcpu->reserved_num = 0; @@ -5610,26 +5610,10 @@ static int mvpp2_txq_init(struct mvpp2_p &txq_pcpu->tso_headers_dma, GFP_KERNEL); if (!txq_pcpu->tso_headers) - goto cleanup; + return -ENOMEM; } return 0; -cleanup: - for_each_present_cpu(cpu) { - txq_pcpu = per_cpu_ptr(txq->pcpu, cpu); - kfree(txq_pcpu->buffs); - - dma_free_coherent(port->dev->dev.parent, - txq_pcpu->size * TSO_HEADER_SIZE, - txq_pcpu->tso_headers, - txq_pcpu->tso_headers_dma); - } - - dma_free_coherent(port->dev->dev.parent, - txq->size * MVPP2_DESC_ALIGNED_SIZE, - txq->descs, txq->descs_dma); - - return -ENOMEM; } /* Free allocated TXQ resources */ Patches currently in stable-queue which might be from antoine.tenart(a)free-electrons.com are queue-4.14/net-phy-marvell10g-fix-the-phy-id-mask.patch queue-4.14/net-mvpp2-fix-the-txq_init-error-path.patch queue-4.14/crypto-inside-secure-avoid-unmapping-dma-memory-that-was-not-mapped.patch queue-4.14/crypto-inside-secure-fix-hash-when-length-is-a-multiple-of-a-block.patch

7 years, 10 months

1
0
0 0

[Linux-stable-mirror] Patch "net: ethernet: xilinx: Mark XILINX_LL_TEMAC broken on 64-bit" has been added to the 4.14-stable tree

by gregkh＠linuxfoundation.org

This is a note to let you know that I've just added the patch titled net: ethernet: xilinx: Mark XILINX_LL_TEMAC broken on 64-bit to the 4.14-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=sum… The filename of the patch is: net-ethernet-xilinx-mark-xilinx_ll_temac-broken-on-64-bit.patch and it can be found in the queue-4.14 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable(a)vger.kernel.org> know about it. >From foo@baz Thu Feb 1 13:45:42 CET 2018 From: Geert Uytterhoeven <geert+renesas(a)glider.be> Date: Wed, 29 Nov 2017 11:01:09 +0100 Subject: net: ethernet: xilinx: Mark XILINX_LL_TEMAC broken on 64-bit From: Geert Uytterhoeven <geert+renesas(a)glider.be> [ Upstream commit 15bfe05c8d6386f1a90e9340d15336e85e32aad6 ] On 64-bit (e.g. powerpc64/allmodconfig): drivers/net/ethernet/xilinx/ll_temac_main.c: In function 'temac_start_xmit_done': drivers/net/ethernet/xilinx/ll_temac_main.c:633:22: warning: cast to pointer from integer of different size [-Wint-to-pointer-cast] dev_kfree_skb_irq((struct sk_buff *)cur_p->app4); ^ cdmac_bd.app4 is u32, so it is too small to hold a kernel pointer. Note that several other fields in struct cdmac_bd are also too small to hold physical addresses on 64-bit platforms. Signed-off-by: Geert Uytterhoeven <geert+renesas(a)glider.be> Signed-off-by: David S. Miller <davem(a)davemloft.net> Signed-off-by: Sasha Levin <alexander.levin(a)verizon.com> Signed-off-by: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> --- drivers/net/ethernet/xilinx/Kconfig | 1 + 1 file changed, 1 insertion(+) --- a/drivers/net/ethernet/xilinx/Kconfig +++ b/drivers/net/ethernet/xilinx/Kconfig @@ -34,6 +34,7 @@ config XILINX_AXI_EMAC config XILINX_LL_TEMAC tristate "Xilinx LL TEMAC (LocalLink Tri-mode Ethernet MAC) driver" depends on (PPC || MICROBLAZE) + depends on !64BIT || BROKEN select PHYLIB ---help--- This driver supports the Xilinx 10/100/1000 LocalLink TEMAC Patches currently in stable-queue which might be from geert+renesas(a)glider.be are queue-4.14/net-ethernet-xilinx-mark-xilinx_ll_temac-broken-on-64-bit.patch

7 years, 10 months

1
0
0 0

[Linux-stable-mirror] Patch "media: usbtv: add a new usbid" has been added to the 4.14-stable tree

by gregkh＠linuxfoundation.org

This is a note to let you know that I've just added the patch titled media: usbtv: add a new usbid to the 4.14-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=sum… The filename of the patch is: media-usbtv-add-a-new-usbid.patch and it can be found in the queue-4.14 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable(a)vger.kernel.org> know about it. >From foo@baz Thu Feb 1 13:45:42 CET 2018 From: Icenowy Zheng <icenowy(a)aosc.io> Date: Sun, 16 Apr 2017 02:51:16 -0400 Subject: media: usbtv: add a new usbid From: Icenowy Zheng <icenowy(a)aosc.io> [ Upstream commit 04226916d2360f56d57ad00bc48d2d1854d1e0b0 ] A new usbid of UTV007 is found in a newly bought device. The usbid is 1f71:3301. The ID on the chip is: UTV007 A89029.1 1520L18K1 Both video and audio is tested with the modified usbtv driver. Signed-off-by: Icenowy Zheng <icenowy(a)aosc.io> Acked-by: Lubomir Rintel <lkundrak(a)v3.sk> Signed-off-by: Mauro Carvalho Chehab <mchehab(a)s-opensource.com> Signed-off-by: Sasha Levin <alexander.levin(a)verizon.com> Signed-off-by: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> --- drivers/media/usb/usbtv/usbtv-core.c | 1 + 1 file changed, 1 insertion(+) --- a/drivers/media/usb/usbtv/usbtv-core.c +++ b/drivers/media/usb/usbtv/usbtv-core.c @@ -144,6 +144,7 @@ static void usbtv_disconnect(struct usb_ static const struct usb_device_id usbtv_id_table[] = { { USB_DEVICE(0x1b71, 0x3002) }, + { USB_DEVICE(0x1f71, 0x3301) }, {} }; MODULE_DEVICE_TABLE(usb, usbtv_id_table); Patches currently in stable-queue which might be from icenowy(a)aosc.io are queue-4.14/media-usbtv-add-a-new-usbid.patch

7 years, 10 months

1
0
0 0

[Linux-stable-mirror] Patch "mac80211: use QoS NDP for AP probing" has been added to the 4.14-stable tree

by gregkh＠linuxfoundation.org

This is a note to let you know that I've just added the patch titled mac80211: use QoS NDP for AP probing to the 4.14-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=sum… The filename of the patch is: mac80211-use-qos-ndp-for-ap-probing.patch and it can be found in the queue-4.14 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable(a)vger.kernel.org> know about it. >From foo@baz Thu Feb 1 13:45:42 CET 2018 From: Johannes Berg <johannes.berg(a)intel.com> Date: Tue, 21 Nov 2017 14:46:08 +0100 Subject: mac80211: use QoS NDP for AP probing From: Johannes Berg <johannes.berg(a)intel.com> [ Upstream commit 7b6ddeaf27eca72795ceeae2f0f347db1b5f9a30 ] When connected to a QoS/WMM AP, mac80211 should use a QoS NDP for probing it, instead of a regular non-QoS one, fix this. Change all the drivers to *not* allow QoS NDP for now, even though it looks like most of them should be OK with that. Signed-off-by: Johannes Berg <johannes.berg(a)intel.com> Signed-off-by: Sasha Levin <alexander.levin(a)verizon.com> Signed-off-by: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> --- drivers/net/wireless/ath/ath9k/channel.c | 2 +- drivers/net/wireless/st/cw1200/sta.c | 4 ++-- drivers/net/wireless/ti/wl1251/main.c | 2 +- drivers/net/wireless/ti/wlcore/cmd.c | 5 +++-- include/net/mac80211.h | 8 +++++++- net/mac80211/mlme.c | 2 +- net/mac80211/tx.c | 29 +++++++++++++++++++++++++++-- 7 files changed, 42 insertions(+), 10 deletions(-) --- a/drivers/net/wireless/ath/ath9k/channel.c +++ b/drivers/net/wireless/ath/ath9k/channel.c @@ -1112,7 +1112,7 @@ ath_chanctx_send_vif_ps_frame(struct ath if (!avp->assoc) return false; - skb = ieee80211_nullfunc_get(sc->hw, vif); + skb = ieee80211_nullfunc_get(sc->hw, vif, false); if (!skb) return false; --- a/drivers/net/wireless/st/cw1200/sta.c +++ b/drivers/net/wireless/st/cw1200/sta.c @@ -198,7 +198,7 @@ void __cw1200_cqm_bssloss_sm(struct cw12 priv->bss_loss_state++; - skb = ieee80211_nullfunc_get(priv->hw, priv->vif); + skb = ieee80211_nullfunc_get(priv->hw, priv->vif, false); WARN_ON(!skb); if (skb) cw1200_tx(priv->hw, NULL, skb); @@ -2266,7 +2266,7 @@ static int cw1200_upload_null(struct cw1 .rate = 0xFF, }; - frame.skb = ieee80211_nullfunc_get(priv->hw, priv->vif); + frame.skb = ieee80211_nullfunc_get(priv->hw, priv->vif, false); if (!frame.skb) return -ENOMEM; --- a/drivers/net/wireless/ti/wl1251/main.c +++ b/drivers/net/wireless/ti/wl1251/main.c @@ -566,7 +566,7 @@ static int wl1251_build_null_data(struct size = sizeof(struct wl12xx_null_data_template); ptr = NULL; } else { - skb = ieee80211_nullfunc_get(wl->hw, wl->vif); + skb = ieee80211_nullfunc_get(wl->hw, wl->vif, false); if (!skb) goto out; size = skb->len; --- a/drivers/net/wireless/ti/wlcore/cmd.c +++ b/drivers/net/wireless/ti/wlcore/cmd.c @@ -1069,7 +1069,8 @@ int wl12xx_cmd_build_null_data(struct wl ptr = NULL; } else { skb = ieee80211_nullfunc_get(wl->hw, - wl12xx_wlvif_to_vif(wlvif)); + wl12xx_wlvif_to_vif(wlvif), + false); if (!skb) goto out; size = skb->len; @@ -1096,7 +1097,7 @@ int wl12xx_cmd_build_klv_null_data(struc struct sk_buff *skb = NULL; int ret = -ENOMEM; - skb = ieee80211_nullfunc_get(wl->hw, vif); + skb = ieee80211_nullfunc_get(wl->hw, vif, false); if (!skb) goto out; --- a/include/net/mac80211.h +++ b/include/net/mac80211.h @@ -4470,18 +4470,24 @@ struct sk_buff *ieee80211_pspoll_get(str * ieee80211_nullfunc_get - retrieve a nullfunc template * @hw: pointer obtained from ieee80211_alloc_hw(). * @vif: &struct ieee80211_vif pointer from the add_interface callback. + * @qos_ok: QoS NDP is acceptable to the caller, this should be set + * if at all possible * * Creates a Nullfunc template which can, for example, uploaded to * hardware. The template must be updated after association so that correct * BSSID and address is used. * + * If @qos_ndp is set and the association is to an AP with QoS/WMM, the + * returned packet will be QoS NDP. + * * Note: Caller (or hardware) is responsible for setting the * &IEEE80211_FCTL_PM bit as well as Duration and Sequence Control fields. * * Return: The nullfunc template. %NULL on error. */ struct sk_buff *ieee80211_nullfunc_get(struct ieee80211_hw *hw, - struct ieee80211_vif *vif); + struct ieee80211_vif *vif, + bool qos_ok); /** * ieee80211_probereq_get - retrieve a Probe Request template --- a/net/mac80211/mlme.c +++ b/net/mac80211/mlme.c @@ -908,7 +908,7 @@ void ieee80211_send_nullfunc(struct ieee struct ieee80211_hdr_3addr *nullfunc; struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; - skb = ieee80211_nullfunc_get(&local->hw, &sdata->vif); + skb = ieee80211_nullfunc_get(&local->hw, &sdata->vif, true); if (!skb) return; --- a/net/mac80211/tx.c +++ b/net/mac80211/tx.c @@ -4404,13 +4404,15 @@ struct sk_buff *ieee80211_pspoll_get(str EXPORT_SYMBOL(ieee80211_pspoll_get); struct sk_buff *ieee80211_nullfunc_get(struct ieee80211_hw *hw, - struct ieee80211_vif *vif) + struct ieee80211_vif *vif, + bool qos_ok) { struct ieee80211_hdr_3addr *nullfunc; struct ieee80211_sub_if_data *sdata; struct ieee80211_if_managed *ifmgd; struct ieee80211_local *local; struct sk_buff *skb; + bool qos = false; if (WARN_ON(vif->type != NL80211_IFTYPE_STATION)) return NULL; @@ -4419,7 +4421,17 @@ struct sk_buff *ieee80211_nullfunc_get(s ifmgd = &sdata->u.mgd; local = sdata->local; - skb = dev_alloc_skb(local->hw.extra_tx_headroom + sizeof(*nullfunc)); + if (qos_ok) { + struct sta_info *sta; + + rcu_read_lock(); + sta = sta_info_get(sdata, ifmgd->bssid); + qos = sta && sta->sta.wme; + rcu_read_unlock(); + } + + skb = dev_alloc_skb(local->hw.extra_tx_headroom + + sizeof(*nullfunc) + 2); if (!skb) return NULL; @@ -4429,6 +4441,19 @@ struct sk_buff *ieee80211_nullfunc_get(s nullfunc->frame_control = cpu_to_le16(IEEE80211_FTYPE_DATA | IEEE80211_STYPE_NULLFUNC | IEEE80211_FCTL_TODS); + if (qos) { + __le16 qos = cpu_to_le16(7); + + BUILD_BUG_ON((IEEE80211_STYPE_QOS_NULLFUNC | + IEEE80211_STYPE_NULLFUNC) != + IEEE80211_STYPE_QOS_NULLFUNC); + nullfunc->frame_control |= + cpu_to_le16(IEEE80211_STYPE_QOS_NULLFUNC); + skb->priority = 7; + skb_set_queue_mapping(skb, IEEE80211_AC_VO); + skb_put_data(skb, &qos, sizeof(qos)); + } + memcpy(nullfunc->addr1, ifmgd->bssid, ETH_ALEN); memcpy(nullfunc->addr2, vif->addr, ETH_ALEN); memcpy(nullfunc->addr3, ifmgd->bssid, ETH_ALEN); Patches currently in stable-queue which might be from johannes.berg(a)intel.com are queue-4.14/mac80211-fix-the-update-of-path-metric-for-rann-frame.patch queue-4.14/mac80211-use-qos-ndp-for-ap-probing.patch

7 years, 10 months

1
0
0 0

[Linux-stable-mirror] Patch "mac80211: fix the update of path metric for RANN frame" has been added to the 4.14-stable tree

by gregkh＠linuxfoundation.org

This is a note to let you know that I've just added the patch titled mac80211: fix the update of path metric for RANN frame to the 4.14-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=sum… The filename of the patch is: mac80211-fix-the-update-of-path-metric-for-rann-frame.patch and it can be found in the queue-4.14 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable(a)vger.kernel.org> know about it. >From foo@baz Thu Feb 1 13:45:42 CET 2018 From: Chun-Yeow Yeoh <yeohchunyeow(a)gmail.com> Date: Tue, 14 Nov 2017 23:20:05 +0800 Subject: mac80211: fix the update of path metric for RANN frame From: Chun-Yeow Yeoh <yeohchunyeow(a)gmail.com> [ Upstream commit fbbdad5edf0bb59786a51b94a9d006bc8c2da9a2 ] The previous path metric update from RANN frame has not considered the own link metric toward the transmitting mesh STA. Fix this. Reported-by: Michael65535 Signed-off-by: Chun-Yeow Yeoh <yeohchunyeow(a)gmail.com> Signed-off-by: Johannes Berg <johannes.berg(a)intel.com> Signed-off-by: Sasha Levin <alexander.levin(a)verizon.com> Signed-off-by: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> --- net/mac80211/mesh_hwmp.c | 15 +++++++++------ 1 file changed, 9 insertions(+), 6 deletions(-) --- a/net/mac80211/mesh_hwmp.c +++ b/net/mac80211/mesh_hwmp.c @@ -797,7 +797,7 @@ static void hwmp_rann_frame_process(stru struct mesh_path *mpath; u8 ttl, flags, hopcount; const u8 *orig_addr; - u32 orig_sn, metric, metric_txsta, interval; + u32 orig_sn, new_metric, orig_metric, last_hop_metric, interval; bool root_is_gate; ttl = rann->rann_ttl; @@ -808,7 +808,7 @@ static void hwmp_rann_frame_process(stru interval = le32_to_cpu(rann->rann_interval); hopcount = rann->rann_hopcount; hopcount++; - metric = le32_to_cpu(rann->rann_metric); + orig_metric = le32_to_cpu(rann->rann_metric); /* Ignore our own RANNs */ if (ether_addr_equal(orig_addr, sdata->vif.addr)) @@ -825,7 +825,10 @@ static void hwmp_rann_frame_process(stru return; } - metric_txsta = airtime_link_metric_get(local, sta); + last_hop_metric = airtime_link_metric_get(local, sta); + new_metric = orig_metric + last_hop_metric; + if (new_metric < orig_metric) + new_metric = MAX_METRIC; mpath = mesh_path_lookup(sdata, orig_addr); if (!mpath) { @@ -838,7 +841,7 @@ static void hwmp_rann_frame_process(stru } if (!(SN_LT(mpath->sn, orig_sn)) && - !(mpath->sn == orig_sn && metric < mpath->rann_metric)) { + !(mpath->sn == orig_sn && new_metric < mpath->rann_metric)) { rcu_read_unlock(); return; } @@ -856,7 +859,7 @@ static void hwmp_rann_frame_process(stru } mpath->sn = orig_sn; - mpath->rann_metric = metric + metric_txsta; + mpath->rann_metric = new_metric; mpath->is_root = true; /* Recording RANNs sender address to send individually * addressed PREQs destined for root mesh STA */ @@ -876,7 +879,7 @@ static void hwmp_rann_frame_process(stru mesh_path_sel_frame_tx(MPATH_RANN, flags, orig_addr, orig_sn, 0, NULL, 0, broadcast_addr, hopcount, ttl, interval, - metric + metric_txsta, 0, sdata); + new_metric, 0, sdata); } rcu_read_unlock(); Patches currently in stable-queue which might be from yeohchunyeow(a)gmail.com are queue-4.14/mac80211-fix-the-update-of-path-metric-for-rann-frame.patch

7 years, 10 months

1
0
0 0

[Linux-stable-mirror] Patch "lockd: fix "list_add double add" caused by legacy signal interface" has been added to the 4.14-stable tree

by gregkh＠linuxfoundation.org

This is a note to let you know that I've just added the patch titled lockd: fix "list_add double add" caused by legacy signal interface to the 4.14-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=sum… The filename of the patch is: lockd-fix-list_add-double-add-caused-by-legacy-signal-interface.patch and it can be found in the queue-4.14 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable(a)vger.kernel.org> know about it. >From foo@baz Thu Feb 1 13:45:42 CET 2018 From: Vasily Averin <vvs(a)virtuozzo.com> Date: Mon, 13 Nov 2017 07:25:40 +0300 Subject: lockd: fix "list_add double add" caused by legacy signal interface From: Vasily Averin <vvs(a)virtuozzo.com> [ Upstream commit 81833de1a46edce9ca20cfe079872ac1c20ef359 ] restart_grace() uses hardcoded init_net. It can cause to "list_add double add" in following scenario: 1) nfsd and lockd was started in several net namespaces 2) nfsd in init_net was stopped (lockd was not stopped because it have users from another net namespaces) 3) lockd got signal, called restart_grace() -> set_grace_period() and enabled lock_manager in hardcoded init_net. 4) nfsd in init_net is started again, its lockd_up() calls set_grace_period() and tries to add lock_manager into init_net 2nd time. Jeff Layton suggest: "Make it safe to call locks_start_grace multiple times on the same lock_manager. If it's already on the global grace_list, then don't try to add it again. (But we don't intentionally add twice, so for now we WARN about that case.) With this change, we also need to ensure that the nfsd4 lock manager initializes the list before we call locks_start_grace. While we're at it, move the rest of the nfsd_net initialization into nfs4_state_create_net. I see no reason to have it spread over two functions like it is today." Suggested patch was updated to generate warning in described situation. Suggested-by: Jeff Layton <jlayton(a)redhat.com> Signed-off-by: Vasily Averin <vvs(a)virtuozzo.com> Signed-off-by: J. Bruce Fields <bfields(a)redhat.com> Signed-off-by: Sasha Levin <alexander.levin(a)verizon.com> Signed-off-by: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> --- fs/nfs_common/grace.c | 6 +++++- fs/nfsd/nfs4state.c | 7 ++++--- 2 files changed, 9 insertions(+), 4 deletions(-) --- a/fs/nfs_common/grace.c +++ b/fs/nfs_common/grace.c @@ -30,7 +30,11 @@ locks_start_grace(struct net *net, struc struct list_head *grace_list = net_generic(net, grace_net_id); spin_lock(&grace_lock); - list_add(&lm->list, grace_list); + if (list_empty(&lm->list)) + list_add(&lm->list, grace_list); + else + WARN(1, "double list_add attempt detected in net %x %s\n", + net->ns.inum, (net == &init_net) ? "(init_net)" : ""); spin_unlock(&grace_lock); } EXPORT_SYMBOL_GPL(locks_start_grace); --- a/fs/nfsd/nfs4state.c +++ b/fs/nfsd/nfs4state.c @@ -7021,6 +7021,10 @@ static int nfs4_state_create_net(struct INIT_LIST_HEAD(&nn->sessionid_hashtbl[i]); nn->conf_name_tree = RB_ROOT; nn->unconf_name_tree = RB_ROOT; + nn->boot_time = get_seconds(); + nn->grace_ended = false; + nn->nfsd4_manager.block_opens = true; + INIT_LIST_HEAD(&nn->nfsd4_manager.list); INIT_LIST_HEAD(&nn->client_lru); INIT_LIST_HEAD(&nn->close_lru); INIT_LIST_HEAD(&nn->del_recall_lru); @@ -7078,9 +7082,6 @@ nfs4_state_start_net(struct net *net) ret = nfs4_state_create_net(net); if (ret) return ret; - nn->boot_time = get_seconds(); - nn->grace_ended = false; - nn->nfsd4_manager.block_opens = true; locks_start_grace(net, &nn->nfsd4_manager); nfsd4_client_tracking_init(net); printk(KERN_INFO "NFSD: starting %ld-second grace period (net %p)\n", Patches currently in stable-queue which might be from vvs(a)virtuozzo.com are queue-4.14/lockd-fix-list_add-double-add-caused-by-legacy-signal-interface.patch queue-4.14/grace-replace-bug_on-by-warn_once-in-exit_net-hook.patch queue-4.14/perf-core-fix-memory-leak-triggered-by-perf-namespace.patch queue-4.14/race-of-lockd-inetaddr-notifiers-vs-nlmsvc_rqst-change.patch

7 years, 10 months

1
0
0 0

[Linux-stable-mirror] Patch "KVM: x86: ioapic: Preserve read-only values in the redirection table" has been added to the 4.14-stable tree

by gregkh＠linuxfoundation.org

This is a note to let you know that I've just added the patch titled KVM: x86: ioapic: Preserve read-only values in the redirection table to the 4.14-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=sum… The filename of the patch is: kvm-x86-ioapic-preserve-read-only-values-in-the-redirection-table.patch and it can be found in the queue-4.14 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable(a)vger.kernel.org> know about it. >From foo@baz Thu Feb 1 13:45:42 CET 2018 From: Nikita Leshenko <nikita.leshchenko(a)oracle.com> Date: Sun, 5 Nov 2017 15:52:33 +0200 Subject: KVM: x86: ioapic: Preserve read-only values in the redirection table From: Nikita Leshenko <nikita.leshchenko(a)oracle.com> [ Upstream commit b200dded0a6974a3b69599832b2203483920ab25 ] According to 82093AA (IOAPIC) manual, Remote IRR and Delivery Status are read-only. QEMU implements the bits as RO in commit 479c2a1cb7fb ("ioapic: keep RO bits for IOAPIC entry"). Signed-off-by: Nikita Leshenko <nikita.leshchenko(a)oracle.com> Reviewed-by: Liran Alon <liran.alon(a)oracle.com> Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk(a)oracle.com> Reviewed-by: Wanpeng Li <wanpeng.li(a)hotmail.com> Reviewed-by: Steve Rutherford <srutherford(a)google.com> Signed-off-by: Radim Krčmář <rkrcmar(a)redhat.com> Signed-off-by: Sasha Levin <alexander.levin(a)verizon.com> Signed-off-by: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> --- arch/x86/kvm/ioapic.c | 6 ++++++ 1 file changed, 6 insertions(+) --- a/arch/x86/kvm/ioapic.c +++ b/arch/x86/kvm/ioapic.c @@ -276,6 +276,7 @@ static void ioapic_write_indirect(struct { unsigned index; bool mask_before, mask_after; + int old_remote_irr, old_delivery_status; union kvm_ioapic_redirect_entry *e; switch (ioapic->ioregsel) { @@ -298,6 +299,9 @@ static void ioapic_write_indirect(struct return; e = &ioapic->redirtbl[index]; mask_before = e->fields.mask; + /* Preserve read-only fields */ + old_remote_irr = e->fields.remote_irr; + old_delivery_status = e->fields.delivery_status; if (ioapic->ioregsel & 1) { e->bits &= 0xffffffff; e->bits |= (u64) val << 32; @@ -305,6 +309,8 @@ static void ioapic_write_indirect(struct e->bits &= ~0xffffffffULL; e->bits |= (u32) val; } + e->fields.remote_irr = old_remote_irr; + e->fields.delivery_status = old_delivery_status; /* * Some OSes (Linux, Xen) assume that Remote IRR bit will Patches currently in stable-queue which might be from nikita.leshchenko(a)oracle.com are queue-4.14/kvm-nvmx-fix-vmx_check_nested_events-return-value-in-case-an-event-was-reinjected-to-l2.patch queue-4.14/kvm-x86-don-t-re-execute-instruction-when-not-passing-cr2-value.patch queue-4.14/kvm-x86-ioapic-preserve-read-only-values-in-the-redirection-table.patch queue-4.14/kvm-x86-ioapic-fix-level-triggered-eoi-and-ioapic-reconfigure-race.patch queue-4.14/kvm-x86-emulator-return-to-user-mode-on-l1-cpl-0-emulation-failure.patch queue-4.14/kvm-nvmx-nsvm-don-t-intercept-ud-when-running-l2.patch queue-4.14/kvm-x86-ioapic-clear-remote-irr-when-entry-is-switched-to-edge-triggered.patch

7 years, 10 months

1
0
0 0

[Linux-stable-mirror] Patch "KVM: x86: ioapic: Fix level-triggered EOI and IOAPIC reconfigure race" has been added to the 4.14-stable tree

by gregkh＠linuxfoundation.org

This is a note to let you know that I've just added the patch titled KVM: x86: ioapic: Fix level-triggered EOI and IOAPIC reconfigure race to the 4.14-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=sum… The filename of the patch is: kvm-x86-ioapic-fix-level-triggered-eoi-and-ioapic-reconfigure-race.patch and it can be found in the queue-4.14 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable(a)vger.kernel.org> know about it. >From foo@baz Thu Feb 1 13:45:42 CET 2018 From: Nikita Leshenko <nikita.leshchenko(a)oracle.com> Date: Sun, 5 Nov 2017 15:52:29 +0200 Subject: KVM: x86: ioapic: Fix level-triggered EOI and IOAPIC reconfigure race From: Nikita Leshenko <nikita.leshchenko(a)oracle.com> [ Upstream commit 0fc5a36dd6b345eb0d251a65c236e53bead3eef7 ] KVM uses ioapic_handled_vectors to track vectors that need to notify the IOAPIC on EOI. The problem is that IOAPIC can be reconfigured while an interrupt with old configuration is pending or running and ioapic_handled_vectors only remembers the newest configuration; thus EOI from the old interrupt is not delievered to the IOAPIC. A previous commit db2bdcbbbd32 ("KVM: x86: fix edge EOI and IOAPIC reconfig race") addressed this issue by adding pending edge-triggered interrupts to ioapic_handled_vectors, fixing this race for edge-triggered interrupts. The commit explicitly ignored level-triggered interrupts, but this race applies to them as well: 1) IOAPIC sends a level triggered interrupt vector to VCPU0 2) VCPU0's handler deasserts the irq line and reconfigures the IOAPIC to route the vector to VCPU1. The reconfiguration rewrites only the upper 32 bits of the IOREDTBLn register. (Causes KVM to update ioapic_handled_vectors for VCPU0 and it no longer includes the vector.) 3) VCPU0 sends EOI for the vector, but it's not delievered to the IOAPIC because the ioapic_handled_vectors doesn't include the vector. 4) New interrupts are not delievered to VCPU1 because remote_irr bit is set forever. Therefore, the correct behavior is to add all pending and running interrupts to ioapic_handled_vectors. This commit introduces a slight performance hit similar to commit db2bdcbbbd32 ("KVM: x86: fix edge EOI and IOAPIC reconfig race") for the rare case that the vector is reused by a non-IOAPIC source on VCPU0. We prefer to keep solution simple and not handle this case just as the original commit does. Fixes: db2bdcbbbd32 ("KVM: x86: fix edge EOI and IOAPIC reconfig race") Signed-off-by: Nikita Leshenko <nikita.leshchenko(a)oracle.com> Reviewed-by: Liran Alon <liran.alon(a)oracle.com> Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk(a)oracle.com> Signed-off-by: Radim Krčmář <rkrcmar(a)redhat.com> Signed-off-by: Sasha Levin <alexander.levin(a)verizon.com> Signed-off-by: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> --- arch/x86/kvm/ioapic.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) --- a/arch/x86/kvm/ioapic.c +++ b/arch/x86/kvm/ioapic.c @@ -257,8 +257,7 @@ void kvm_ioapic_scan_entry(struct kvm_vc index == RTC_GSI) { if (kvm_apic_match_dest(vcpu, NULL, 0, e->fields.dest_id, e->fields.dest_mode) || - (e->fields.trig_mode == IOAPIC_EDGE_TRIG && - kvm_apic_pending_eoi(vcpu, e->fields.vector))) + kvm_apic_pending_eoi(vcpu, e->fields.vector)) __set_bit(e->fields.vector, ioapic_handled_vectors); } Patches currently in stable-queue which might be from nikita.leshchenko(a)oracle.com are queue-4.14/kvm-nvmx-fix-vmx_check_nested_events-return-value-in-case-an-event-was-reinjected-to-l2.patch queue-4.14/kvm-x86-don-t-re-execute-instruction-when-not-passing-cr2-value.patch queue-4.14/kvm-x86-ioapic-preserve-read-only-values-in-the-redirection-table.patch queue-4.14/kvm-x86-ioapic-fix-level-triggered-eoi-and-ioapic-reconfigure-race.patch queue-4.14/kvm-x86-emulator-return-to-user-mode-on-l1-cpl-0-emulation-failure.patch queue-4.14/kvm-nvmx-nsvm-don-t-intercept-ud-when-running-l2.patch queue-4.14/kvm-x86-ioapic-clear-remote-irr-when-entry-is-switched-to-edge-triggered.patch

7 years, 10 months

1
0
0 0

[Linux-stable-mirror] Patch "KVM: x86: ioapic: Clear Remote IRR when entry is switched to edge-triggered" has been added to the 4.14-stable tree

by gregkh＠linuxfoundation.org

This is a note to let you know that I've just added the patch titled KVM: x86: ioapic: Clear Remote IRR when entry is switched to edge-triggered to the 4.14-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=sum… The filename of the patch is: kvm-x86-ioapic-clear-remote-irr-when-entry-is-switched-to-edge-triggered.patch and it can be found in the queue-4.14 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable(a)vger.kernel.org> know about it. >From foo@baz Thu Feb 1 13:45:42 CET 2018 From: Nikita Leshenko <nikita.leshchenko(a)oracle.com> Date: Sun, 5 Nov 2017 15:52:32 +0200 Subject: KVM: x86: ioapic: Clear Remote IRR when entry is switched to edge-triggered From: Nikita Leshenko <nikita.leshchenko(a)oracle.com> [ Upstream commit a8bfec2930525808c01f038825d1df3904638631 ] Some OSes (Linux, Xen) use this behavior to clear the Remote IRR bit for IOAPICs without an EOI register. They simulate the EOI message manually by changing the trigger mode to edge and then back to level, with the entry being masked during this. QEMU implements this feature in commit ed1263c363c9 ("ioapic: clear remote irr bit for edge-triggered interrupts") As a side effect, this commit removes an incorrect behavior where Remote IRR was cleared when the redirection table entry was rewritten. This is not consistent with the manual and also opens an opportunity for a strange behavior when a redirection table entry is modified from an interrupt handler that handles the same entry: The modification will clear the Remote IRR bit even though the interrupt handler is still running. Signed-off-by: Nikita Leshenko <nikita.leshchenko(a)oracle.com> Reviewed-by: Liran Alon <liran.alon(a)oracle.com> Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk(a)oracle.com> Reviewed-by: Wanpeng Li <wanpeng.li(a)hotmail.com> Reviewed-by: Steve Rutherford <srutherford(a)google.com> Signed-off-by: Radim Krčmář <rkrcmar(a)redhat.com> Signed-off-by: Sasha Levin <alexander.levin(a)verizon.com> Signed-off-by: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> --- arch/x86/kvm/ioapic.c | 11 ++++++++++- 1 file changed, 10 insertions(+), 1 deletion(-) --- a/arch/x86/kvm/ioapic.c +++ b/arch/x86/kvm/ioapic.c @@ -304,8 +304,17 @@ static void ioapic_write_indirect(struct } else { e->bits &= ~0xffffffffULL; e->bits |= (u32) val; - e->fields.remote_irr = 0; } + + /* + * Some OSes (Linux, Xen) assume that Remote IRR bit will + * be cleared by IOAPIC hardware when the entry is configured + * as edge-triggered. This behavior is used to simulate an + * explicit EOI on IOAPICs that don't have the EOI register. + */ + if (e->fields.trig_mode == IOAPIC_EDGE_TRIG) + e->fields.remote_irr = 0; + mask_after = e->fields.mask; if (mask_before != mask_after) kvm_fire_mask_notifiers(ioapic->kvm, KVM_IRQCHIP_IOAPIC, index, mask_after); Patches currently in stable-queue which might be from nikita.leshchenko(a)oracle.com are queue-4.14/kvm-nvmx-fix-vmx_check_nested_events-return-value-in-case-an-event-was-reinjected-to-l2.patch queue-4.14/kvm-x86-don-t-re-execute-instruction-when-not-passing-cr2-value.patch queue-4.14/kvm-x86-ioapic-preserve-read-only-values-in-the-redirection-table.patch queue-4.14/kvm-x86-ioapic-fix-level-triggered-eoi-and-ioapic-reconfigure-race.patch queue-4.14/kvm-x86-emulator-return-to-user-mode-on-l1-cpl-0-emulation-failure.patch queue-4.14/kvm-nvmx-nsvm-don-t-intercept-ud-when-running-l2.patch queue-4.14/kvm-x86-ioapic-clear-remote-irr-when-entry-is-switched-to-edge-triggered.patch

7 years, 10 months

1
0
0 0

[Linux-stable-mirror] Patch "KVM: X86: Fix softlockup when get the current kvmclock" has been added to the 4.14-stable tree

by gregkh＠linuxfoundation.org

This is a note to let you know that I've just added the patch titled KVM: X86: Fix softlockup when get the current kvmclock to the 4.14-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=sum… The filename of the patch is: kvm-x86-fix-softlockup-when-get-the-current-kvmclock.patch and it can be found in the queue-4.14 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable(a)vger.kernel.org> know about it. >From foo@baz Thu Feb 1 13:45:42 CET 2018 From: Wanpeng Li <kernellwp(a)gmail.com> Date: Mon, 20 Nov 2017 14:55:05 -0800 Subject: KVM: X86: Fix softlockup when get the current kvmclock From: Wanpeng Li <kernellwp(a)gmail.com> [ Upstream commit e70b57a6ce4e8b92a56a615ae79bdb2bd66035e7 ] watchdog: BUG: soft lockup - CPU#6 stuck for 22s! [qemu-system-x86:10185] CPU: 6 PID: 10185 Comm: qemu-system-x86 Tainted: G OE 4.14.0-rc4+ #4 RIP: 0010:kvm_get_time_scale+0x4e/0xa0 [kvm] Call Trace: get_time_ref_counter+0x5a/0x80 [kvm] kvm_hv_process_stimers+0x120/0x5f0 [kvm] kvm_arch_vcpu_ioctl_run+0x4b4/0x1690 [kvm] kvm_vcpu_ioctl+0x33a/0x620 [kvm] do_vfs_ioctl+0xa1/0x5d0 SyS_ioctl+0x79/0x90 entry_SYSCALL_64_fastpath+0x1e/0xa9 This can be reproduced when running kvm-unit-tests/hyperv_stimer.flat and cpu-hotplug stress simultaneously. __this_cpu_read(cpu_tsc_khz) returns 0 (set in kvmclock_cpu_down_prep()) when the pCPU is unhotplug which results in kvm_get_time_scale() gets into an infinite loop. This patch fixes it by treating the unhotplug pCPU as not using master clock. Reviewed-by: Radim Krčmář <rkrcmar(a)redhat.com> Reviewed-by: David Hildenbrand <david(a)redhat.com> Cc: Paolo Bonzini <pbonzini(a)redhat.com> Cc: Radim Krčmář <rkrcmar(a)redhat.com> Signed-off-by: Wanpeng Li <wanpeng.li(a)hotmail.com> Signed-off-by: Paolo Bonzini <pbonzini(a)redhat.com> Signed-off-by: Sasha Levin <alexander.levin(a)verizon.com> Signed-off-by: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> --- arch/x86/kvm/x86.c | 11 +++++++---- 1 file changed, 7 insertions(+), 4 deletions(-) --- a/arch/x86/kvm/x86.c +++ b/arch/x86/kvm/x86.c @@ -1795,10 +1795,13 @@ u64 get_kvmclock_ns(struct kvm *kvm) /* both __this_cpu_read() and rdtsc() should be on the same cpu */ get_cpu(); - kvm_get_time_scale(NSEC_PER_SEC, __this_cpu_read(cpu_tsc_khz) * 1000LL, - &hv_clock.tsc_shift, - &hv_clock.tsc_to_system_mul); - ret = __pvclock_read_cycles(&hv_clock, rdtsc()); + if (__this_cpu_read(cpu_tsc_khz)) { + kvm_get_time_scale(NSEC_PER_SEC, __this_cpu_read(cpu_tsc_khz) * 1000LL, + &hv_clock.tsc_shift, + &hv_clock.tsc_to_system_mul); + ret = __pvclock_read_cycles(&hv_clock, rdtsc()); + } else + ret = ktime_get_boot_ns() + ka->kvmclock_offset; put_cpu(); Patches currently in stable-queue which might be from kernellwp(a)gmail.com are queue-4.14/kvm-x86-fix-softlockup-when-get-the-current-kvmclock.patch

7 years, 10 months

1
0
0 0

2025

2024

2023

2022

2021

2020

2019

2018

2017

Linux-stable-mirror