March 2018 - Linux-stable-mirror

Patch "Revert "s390/qeth: fix using of ref counter for rxip addresses"" has been added to the 4.15-stable tree

by gregkh＠linuxfoundation.org

This is a note to let you know that I've just added the patch titled Revert "s390/qeth: fix using of ref counter for rxip addresses" to the 4.15-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: revert-s390-qeth-fix-using-of-ref-counter-for-rxip-addresses.patch and it can be found in the queue-4.15 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 Tue Mar 6 19:02:57 PST 2018 From: Julian Wiedmann <jwi(a)linux.vnet.ibm.com> Date: Tue, 27 Feb 2018 18:58:15 +0100 Subject: Revert "s390/qeth: fix using of ref counter for rxip addresses" From: Julian Wiedmann <jwi(a)linux.vnet.ibm.com> [ Upstream commit 4964c66fd49b2e2342da35358f2ff74614bcbaee ] This reverts commit cb816192d986f7596009dedcf2201fe2e5bc2aa7. The issue this attempted to fix never actually occurs. l3_add_rxip() checks (via l3_ip_from_hash()) if the requested address was previously added to the card. If so, it returns -EEXIST and doesn't call l3_add_ip(). As a result, the "address exists" path in l3_add_ip() is never taken for rxip addresses, and this patch had no effect. Fixes: cb816192d986 ("s390/qeth: fix using of ref counter for rxip addresses") Signed-off-by: Julian Wiedmann <jwi(a)linux.vnet.ibm.com> Signed-off-by: David S. Miller <davem(a)davemloft.net> Signed-off-by: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> --- drivers/s390/net/qeth_l3_main.c | 8 +++----- 1 file changed, 3 insertions(+), 5 deletions(-) --- a/drivers/s390/net/qeth_l3_main.c +++ b/drivers/s390/net/qeth_l3_main.c @@ -250,8 +250,7 @@ int qeth_l3_delete_ip(struct qeth_card * return -ENOENT; addr->ref_counter--; - if (addr->ref_counter > 0 && (addr->type == QETH_IP_TYPE_NORMAL || - addr->type == QETH_IP_TYPE_RXIP)) + if (addr->type == QETH_IP_TYPE_NORMAL && addr->ref_counter > 0) return rc; if (addr->in_progress) return -EINPROGRESS; @@ -329,9 +328,8 @@ int qeth_l3_add_ip(struct qeth_card *car kfree(addr); } } else { - if (addr->type == QETH_IP_TYPE_NORMAL || - addr->type == QETH_IP_TYPE_RXIP) - addr->ref_counter++; + if (addr->type == QETH_IP_TYPE_NORMAL) + addr->ref_counter++; } return rc; Patches currently in stable-queue which might be from jwi(a)linux.vnet.ibm.com are queue-4.15/s390-qeth-fix-setip-command-handling.patch queue-4.15/s390-qeth-fix-ip-address-lookup-for-l3-devices.patch queue-4.15/s390-qeth-fix-ipa-command-submission-race.patch queue-4.15/revert-s390-qeth-fix-using-of-ref-counter-for-rxip-addresses.patch queue-4.15/s390-qeth-fix-overestimated-count-of-buffer-elements.patch queue-4.15/s390-qeth-fix-double-free-on-ip-add-remove-race.patch queue-4.15/s390-qeth-fix-ip-removal-on-offline-cards.patch queue-4.15/s390-qeth-fix-underestimated-count-of-buffer-elements.patch

6 years, 10 months

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Patch "rxrpc: Fix send in rxrpc_send_data_packet()" has been added to the 4.15-stable tree

by gregkh＠linuxfoundation.org

This is a note to let you know that I've just added the patch titled rxrpc: Fix send in rxrpc_send_data_packet() to the 4.15-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: rxrpc-fix-send-in-rxrpc_send_data_packet.patch and it can be found in the queue-4.15 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 Tue Mar 6 19:02:56 PST 2018 From: David Howells <dhowells(a)redhat.com> Date: Thu, 22 Feb 2018 14:38:14 +0000 Subject: rxrpc: Fix send in rxrpc_send_data_packet() From: David Howells <dhowells(a)redhat.com> [ Upstream commit 93c62c45ed5fad1b87e3a45835b251cd68de9c46 ] All the kernel_sendmsg() calls in rxrpc_send_data_packet() need to send both parts of the iov[] buffer, but one of them does not. Fix it so that it does. Without this, short IPv6 rxrpc DATA packets may be seen that have the rxrpc header included, but no payload. Fixes: 5a924b8951f8 ("rxrpc: Don't store the rxrpc header in the Tx queue sk_buffs") Reported-by: Marc Dionne <marc.dionne(a)auristor.com> Signed-off-by: David Howells <dhowells(a)redhat.com> Signed-off-by: David S. Miller <davem(a)davemloft.net> Signed-off-by: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> --- net/rxrpc/output.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- a/net/rxrpc/output.c +++ b/net/rxrpc/output.c @@ -445,7 +445,7 @@ send_fragmentable: (char *)&opt, sizeof(opt)); if (ret == 0) { ret = kernel_sendmsg(conn->params.local->socket, &msg, - iov, 1, iov[0].iov_len); + iov, 2, len); opt = IPV6_PMTUDISC_DO; kernel_setsockopt(conn->params.local->socket, Patches currently in stable-queue which might be from dhowells(a)redhat.com are queue-4.15/rxrpc-fix-send-in-rxrpc_send_data_packet.patch

6 years, 10 months

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Patch "ppp: prevent unregistered channels from connecting to PPP units" has been added to the 4.15-stable tree

by gregkh＠linuxfoundation.org

This is a note to let you know that I've just added the patch titled ppp: prevent unregistered channels from connecting to PPP units to the 4.15-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: ppp-prevent-unregistered-channels-from-connecting-to-ppp-units.patch and it can be found in the queue-4.15 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 Tue Mar 6 19:02:56 PST 2018 From: Guillaume Nault <g.nault(a)alphalink.fr> Date: Fri, 2 Mar 2018 18:41:16 +0100 Subject: ppp: prevent unregistered channels from connecting to PPP units From: Guillaume Nault <g.nault(a)alphalink.fr> [ Upstream commit 77f840e3e5f09c6d7d727e85e6e08276dd813d11 ] PPP units don't hold any reference on the channels connected to it. It is the channel's responsibility to ensure that it disconnects from its unit before being destroyed. In practice, this is ensured by ppp_unregister_channel() disconnecting the channel from the unit before dropping a reference on the channel. However, it is possible for an unregistered channel to connect to a PPP unit: register a channel with ppp_register_net_channel(), attach a /dev/ppp file to it with ioctl(PPPIOCATTCHAN), unregister the channel with ppp_unregister_channel() and finally connect the /dev/ppp file to a PPP unit with ioctl(PPPIOCCONNECT). Once in this situation, the channel is only held by the /dev/ppp file, which can be released at anytime and free the channel without letting the parent PPP unit know. Then the ppp structure ends up with dangling pointers in its ->channels list. Prevent this scenario by forbidding unregistered channels from connecting to PPP units. This maintains the code logic by keeping ppp_unregister_channel() responsible from disconnecting the channel if necessary and avoids modification on the reference counting mechanism. This issue seems to predate git history (successfully reproduced on Linux 2.6.26 and earlier PPP commits are unrelated). Signed-off-by: Guillaume Nault <g.nault(a)alphalink.fr> Signed-off-by: David S. Miller <davem(a)davemloft.net> Signed-off-by: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> --- drivers/net/ppp/ppp_generic.c | 9 +++++++++ 1 file changed, 9 insertions(+) --- a/drivers/net/ppp/ppp_generic.c +++ b/drivers/net/ppp/ppp_generic.c @@ -3161,6 +3161,15 @@ ppp_connect_channel(struct channel *pch, goto outl; ppp_lock(ppp); + spin_lock_bh(&pch->downl); + if (!pch->chan) { + /* Don't connect unregistered channels */ + spin_unlock_bh(&pch->downl); + ppp_unlock(ppp); + ret = -ENOTCONN; + goto outl; + } + spin_unlock_bh(&pch->downl); if (pch->file.hdrlen > ppp->file.hdrlen) ppp->file.hdrlen = pch->file.hdrlen; hdrlen = pch->file.hdrlen + 2; /* for protocol bytes */ Patches currently in stable-queue which might be from g.nault(a)alphalink.fr are queue-4.15/ppp-prevent-unregistered-channels-from-connecting-to-ppp-units.patch

6 years, 10 months

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Patch "netlink: ensure to loop over all netns in genlmsg_multicast_allns()" has been added to the 4.15-stable tree

by gregkh＠linuxfoundation.org

This is a note to let you know that I've just added the patch titled netlink: ensure to loop over all netns in genlmsg_multicast_allns() to the 4.15-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: netlink-ensure-to-loop-over-all-netns-in-genlmsg_multicast_allns.patch and it can be found in the queue-4.15 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 Tue Mar 6 19:02:56 PST 2018 From: Nicolas Dichtel <nicolas.dichtel(a)6wind.com> Date: Tue, 6 Feb 2018 14:48:32 +0100 Subject: netlink: ensure to loop over all netns in genlmsg_multicast_allns() From: Nicolas Dichtel <nicolas.dichtel(a)6wind.com> [ Upstream commit cb9f7a9a5c96a773bbc9c70660dc600cfff82f82 ] Nowadays, nlmsg_multicast() returns only 0 or -ESRCH but this was not the case when commit 134e63756d5f was pushed. However, there was no reason to stop the loop if a netns does not have listeners. Returns -ESRCH only if there was no listeners in all netns. To avoid having the same problem in the future, I didn't take the assumption that nlmsg_multicast() returns only 0 or -ESRCH. Fixes: 134e63756d5f ("genetlink: make netns aware") CC: Johannes Berg <johannes.berg(a)intel.com> Signed-off-by: Nicolas Dichtel <nicolas.dichtel(a)6wind.com> Signed-off-by: David S. Miller <davem(a)davemloft.net> Signed-off-by: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> --- net/netlink/genetlink.c | 12 ++++++++++-- 1 file changed, 10 insertions(+), 2 deletions(-) --- a/net/netlink/genetlink.c +++ b/net/netlink/genetlink.c @@ -1081,6 +1081,7 @@ static int genlmsg_mcast(struct sk_buff { struct sk_buff *tmp; struct net *net, *prev = NULL; + bool delivered = false; int err; for_each_net_rcu(net) { @@ -1092,14 +1093,21 @@ static int genlmsg_mcast(struct sk_buff } err = nlmsg_multicast(prev->genl_sock, tmp, portid, group, flags); - if (err) + if (!err) + delivered = true; + else if (err != -ESRCH) goto error; } prev = net; } - return nlmsg_multicast(prev->genl_sock, skb, portid, group, flags); + err = nlmsg_multicast(prev->genl_sock, skb, portid, group, flags); + if (!err) + delivered = true; + else if (err != -ESRCH) + goto error; + return delivered ? 0 : -ESRCH; error: kfree_skb(skb); return err; Patches currently in stable-queue which might be from nicolas.dichtel(a)6wind.com are queue-4.15/netlink-ensure-to-loop-over-all-netns-in-genlmsg_multicast_allns.patch

6 years, 10 months

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Patch "netlink: put module reference if dump start fails" has been added to the 4.15-stable tree

by gregkh＠linuxfoundation.org

This is a note to let you know that I've just added the patch titled netlink: put module reference if dump start fails to the 4.15-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: netlink-put-module-reference-if-dump-start-fails.patch and it can be found in the queue-4.15 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 Tue Mar 6 19:02:56 PST 2018 From: "Jason A. Donenfeld" <Jason(a)zx2c4.com> Date: Wed, 21 Feb 2018 04:41:59 +0100 Subject: netlink: put module reference if dump start fails From: "Jason A. Donenfeld" <Jason(a)zx2c4.com> [ Upstream commit b87b6194be631c94785fe93398651e804ed43e28 ] Before, if cb->start() failed, the module reference would never be put, because cb->cb_running is intentionally false at this point. Users are generally annoyed by this because they can no longer unload modules that leak references. Also, it may be possible to tediously wrap a reference counter back to zero, especially since module.c still uses atomic_inc instead of refcount_inc. This patch expands the error path to simply call module_put if cb->start() fails. Fixes: 41c87425a1ac ("netlink: do not set cb_running if dump's start() errs") Signed-off-by: Jason A. Donenfeld <Jason(a)zx2c4.com> Signed-off-by: David S. Miller <davem(a)davemloft.net> Signed-off-by: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> --- net/netlink/af_netlink.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) --- a/net/netlink/af_netlink.c +++ b/net/netlink/af_netlink.c @@ -2275,7 +2275,7 @@ int __netlink_dump_start(struct sock *ss if (cb->start) { ret = cb->start(cb); if (ret) - goto error_unlock; + goto error_put; } nlk->cb_running = true; @@ -2295,6 +2295,8 @@ int __netlink_dump_start(struct sock *ss */ return -EINTR; +error_put: + module_put(control->module); error_unlock: sock_put(sk); mutex_unlock(nlk->cb_mutex); Patches currently in stable-queue which might be from Jason(a)zx2c4.com are queue-4.15/netlink-put-module-reference-if-dump-start-fails.patch

6 years, 10 months

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Patch "net: sched: report if filter is too large to dump" has been added to the 4.15-stable tree

by gregkh＠linuxfoundation.org

This is a note to let you know that I've just added the patch titled net: sched: report if filter is too large to dump to the 4.15-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-sched-report-if-filter-is-too-large-to-dump.patch and it can be found in the queue-4.15 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 Tue Mar 6 19:02:56 PST 2018 From: Roman Kapl <code(a)rkapl.cz> Date: Mon, 19 Feb 2018 21:32:51 +0100 Subject: net: sched: report if filter is too large to dump From: Roman Kapl <code(a)rkapl.cz> [ Upstream commit 5ae437ad5a2ed573b1ebb04e0afa70b8869f88dd ] So far, if the filter was too large to fit in the allocated skb, the kernel did not return any error and stopped dumping. Modify the dumper so that it returns -EMSGSIZE when a filter fails to dump and it is the first filter in the skb. If we are not first, we will get a next chance with more room. I understand this is pretty near to being an API change, but the original design (silent truncation) can be considered a bug. Note: The error case can happen pretty easily if you create a filter with 32 actions and have 4kb pages. Also recent versions of iproute try to be clever with their buffer allocation size, which in turn leads to Signed-off-by: Roman Kapl <code(a)rkapl.cz> Acked-by: Jiri Pirko <jiri(a)mellanox.com> Acked-by: Cong Wang <xiyou.wangcong(a)gmail.com> Signed-off-by: David S. Miller <davem(a)davemloft.net> Signed-off-by: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> --- net/sched/cls_api.c | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-) --- a/net/sched/cls_api.c +++ b/net/sched/cls_api.c @@ -1054,13 +1054,18 @@ static int tc_dump_tfilter(struct sk_buf nla_get_u32(tca[TCA_CHAIN]) != chain->index) continue; if (!tcf_chain_dump(chain, q, parent, skb, cb, - index_start, &index)) + index_start, &index)) { + err = -EMSGSIZE; break; + } } cb->args[0] = index; out: + /* If we did no progress, the error (EMSGSIZE) is real */ + if (skb->len == 0 && err) + return err; return skb->len; } Patches currently in stable-queue which might be from code(a)rkapl.cz are queue-4.15/net-sched-report-if-filter-is-too-large-to-dump.patch

6 years, 10 months

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Patch "net_sched: gen_estimator: fix broken estimators based on percpu stats" has been added to the 4.15-stable tree

by gregkh＠linuxfoundation.org

This is a note to let you know that I've just added the patch titled net_sched: gen_estimator: fix broken estimators based on percpu stats to the 4.15-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_sched-gen_estimator-fix-broken-estimators-based-on-percpu-stats.patch and it can be found in the queue-4.15 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 Tue Mar 6 19:02:56 PST 2018 From: Eric Dumazet <edumazet(a)google.com> Date: Thu, 22 Feb 2018 19:45:27 -0800 Subject: net_sched: gen_estimator: fix broken estimators based on percpu stats From: Eric Dumazet <edumazet(a)google.com> [ Upstream commit a5f7add332b4ea6d4b9480971b3b0f5e66466ae9 ] pfifo_fast got percpu stats lately, uncovering a bug I introduced last year in linux-4.10. I missed the fact that we have to clear our temporary storage before calling __gnet_stats_copy_basic() in the case of percpu stats. Without this fix, rate estimators (tc qd replace dev xxx root est 1sec 4sec pfifo_fast) are utterly broken. Fixes: 1c0d32fde5bd ("net_sched: gen_estimator: complete rewrite of rate estimators") Signed-off-by: Eric Dumazet <edumazet(a)google.com> Signed-off-by: David S. Miller <davem(a)davemloft.net> Signed-off-by: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> --- net/core/gen_estimator.c | 1 + 1 file changed, 1 insertion(+) --- a/net/core/gen_estimator.c +++ b/net/core/gen_estimator.c @@ -66,6 +66,7 @@ struct net_rate_estimator { static void est_fetch_counters(struct net_rate_estimator *e, struct gnet_stats_basic_packed *b) { + memset(b, 0, sizeof(*b)); if (e->stats_lock) spin_lock(e->stats_lock); Patches currently in stable-queue which might be from edumazet(a)google.com are queue-4.15/doc-change-the-min-default-value-of-tcp_wmem-tcp_rmem.patch queue-4.15/tcp-purge-write-queue-upon-rst.patch queue-4.15/net_sched-gen_estimator-fix-broken-estimators-based-on-percpu-stats.patch queue-4.15/tcp_bbr-better-deal-with-suboptimal-gso.patch

6 years, 10 months

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Patch "net/sched: cls_u32: fix cls_u32 on filter replace" has been added to the 4.15-stable tree

by gregkh＠linuxfoundation.org

This is a note to let you know that I've just added the patch titled net/sched: cls_u32: fix cls_u32 on filter replace to the 4.15-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-sched-cls_u32-fix-cls_u32-on-filter-replace.patch and it can be found in the queue-4.15 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 Tue Mar 6 19:02:56 PST 2018 From: Ivan Vecera <ivecera(a)redhat.com> Date: Thu, 8 Feb 2018 16:10:39 +0100 Subject: net/sched: cls_u32: fix cls_u32 on filter replace From: Ivan Vecera <ivecera(a)redhat.com> [ Upstream commit eb53f7af6f15285e2f6ada97285395343ce9f433 ] The following sequence is currently broken: # tc qdisc add dev foo ingress # tc filter replace dev foo protocol all ingress \ u32 match u8 0 0 action mirred egress mirror dev bar1 # tc filter replace dev foo protocol all ingress \ handle 800::800 pref 49152 \ u32 match u8 0 0 action mirred egress mirror dev bar2 Error: cls_u32: Key node flags do not match passed flags. We have an error talking to the kernel, -1 The error comes from u32_change() when comparing new and existing flags. The existing ones always contains one of TCA_CLS_FLAGS_{,NOT}_IN_HW flag depending on offloading state. These flags cannot be passed from userspace so the condition (n->flags != flags) in u32_change() always fails. Fix the condition so the flags TCA_CLS_FLAGS_NOT_IN_HW and TCA_CLS_FLAGS_IN_HW are not taken into account. Fixes: 24d3dc6d27ea ("net/sched: cls_u32: Reflect HW offload status") Signed-off-by: Ivan Vecera <ivecera(a)redhat.com> Signed-off-by: David S. Miller <davem(a)davemloft.net> Signed-off-by: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> --- net/sched/cls_u32.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) --- a/net/sched/cls_u32.c +++ b/net/sched/cls_u32.c @@ -928,7 +928,8 @@ static int u32_change(struct net *net, s if (TC_U32_KEY(n->handle) == 0) return -EINVAL; - if (n->flags != flags) + if ((n->flags ^ flags) & + ~(TCA_CLS_FLAGS_IN_HW | TCA_CLS_FLAGS_NOT_IN_HW)) return -EINVAL; new = u32_init_knode(tp, n); Patches currently in stable-queue which might be from ivecera(a)redhat.com are queue-4.15/net-sched-cls_u32-fix-cls_u32-on-filter-replace.patch

6 years, 10 months

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Patch "net: phy: fix phy_start to consider PHY_IGNORE_INTERRUPT" has been added to the 4.15-stable tree

by gregkh＠linuxfoundation.org

This is a note to let you know that I've just added the patch titled net: phy: fix phy_start to consider PHY_IGNORE_INTERRUPT to the 4.15-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-phy-fix-phy_start-to-consider-phy_ignore_interrupt.patch and it can be found in the queue-4.15 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 Tue Mar 6 19:02:56 PST 2018 From: Heiner Kallweit <hkallweit1(a)gmail.com> Date: Thu, 8 Feb 2018 21:01:48 +0100 Subject: net: phy: fix phy_start to consider PHY_IGNORE_INTERRUPT From: Heiner Kallweit <hkallweit1(a)gmail.com> [ Upstream commit 08f5138512180a479ce6b9d23b825c9f4cd3be77 ] This condition wasn't adjusted when PHY_IGNORE_INTERRUPT (-2) was added long ago. In case of PHY_IGNORE_INTERRUPT the MAC interrupt indicates also PHY state changes and we should do what the symbol says. Fixes: 84a527a41f38 ("net: phylib: fix interrupts re-enablement in phy_start") Signed-off-by: Heiner Kallweit <hkallweit1(a)gmail.com> Reviewed-by: Florian Fainelli <f.fainelli(a)gmail.com> Signed-off-by: David S. Miller <davem(a)davemloft.net> Signed-off-by: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> --- drivers/net/phy/phy.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- a/drivers/net/phy/phy.c +++ b/drivers/net/phy/phy.c @@ -844,7 +844,7 @@ void phy_start(struct phy_device *phydev phy_resume(phydev); /* make sure interrupts are re-enabled for the PHY */ - if (phydev->irq != PHY_POLL) { + if (phy_interrupt_is_valid(phydev)) { err = phy_enable_interrupts(phydev); if (err < 0) break; Patches currently in stable-queue which might be from hkallweit1(a)gmail.com are queue-4.15/net-phy-fix-phy_start-to-consider-phy_ignore_interrupt.patch queue-4.15/net-phy-restore-phy_resume-locking-assumption.patch

6 years, 10 months

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Patch "net: phy: Restore phy_resume() locking assumption" has been added to the 4.15-stable tree

by gregkh＠linuxfoundation.org

This is a note to let you know that I've just added the patch titled net: phy: Restore phy_resume() locking assumption to the 4.15-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-phy-restore-phy_resume-locking-assumption.patch and it can be found in the queue-4.15 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 Tue Mar 6 19:02:56 PST 2018 From: Andrew Lunn <andrew(a)lunn.ch> Date: Tue, 27 Feb 2018 01:56:06 +0100 Subject: net: phy: Restore phy_resume() locking assumption From: Andrew Lunn <andrew(a)lunn.ch> [ Upstream commit 9c2c2e62df3fa30fb13fbeb7512a4eede729383b ] commit f5e64032a799 ("net: phy: fix resume handling") changes the locking semantics for phy_resume() such that the caller now needs to hold the phy mutex. Not all call sites were adopted to this new semantic, resulting in warnings from the added WARN_ON(!mutex_is_locked(&phydev->lock)). Rather than change the semantics, add a __phy_resume() and restore the old behavior of phy_resume(). Reported-by: Heiner Kallweit <hkallweit1(a)gmail.com> Fixes: f5e64032a799 ("net: phy: fix resume handling") Signed-off-by: Andrew Lunn <andrew(a)lunn.ch> Reviewed-by: Florian Fainelli <f.fainelli(a)gmail.com> Signed-off-by: David S. Miller <davem(a)davemloft.net> Signed-off-by: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> --- drivers/net/phy/phy.c | 2 +- drivers/net/phy/phy_device.c | 18 +++++++++++++----- include/linux/phy.h | 1 + 3 files changed, 15 insertions(+), 6 deletions(-) --- a/drivers/net/phy/phy.c +++ b/drivers/net/phy/phy.c @@ -841,7 +841,7 @@ void phy_start(struct phy_device *phydev break; case PHY_HALTED: /* if phy was suspended, bring the physical link up again */ - phy_resume(phydev); + __phy_resume(phydev); /* make sure interrupts are re-enabled for the PHY */ if (phy_interrupt_is_valid(phydev)) { --- a/drivers/net/phy/phy_device.c +++ b/drivers/net/phy/phy_device.c @@ -135,9 +135,7 @@ static int mdio_bus_phy_resume(struct de if (!mdio_bus_phy_may_suspend(phydev)) goto no_resume; - mutex_lock(&phydev->lock); ret = phy_resume(phydev); - mutex_unlock(&phydev->lock); if (ret < 0) return ret; @@ -1028,9 +1026,7 @@ int phy_attach_direct(struct net_device if (err) goto error; - mutex_lock(&phydev->lock); phy_resume(phydev); - mutex_unlock(&phydev->lock); phy_led_triggers_register(phydev); return err; @@ -1156,7 +1152,7 @@ int phy_suspend(struct phy_device *phyde } EXPORT_SYMBOL(phy_suspend); -int phy_resume(struct phy_device *phydev) +int __phy_resume(struct phy_device *phydev) { struct phy_driver *phydrv = to_phy_driver(phydev->mdio.dev.driver); int ret = 0; @@ -1173,6 +1169,18 @@ int phy_resume(struct phy_device *phydev return ret; } +EXPORT_SYMBOL(__phy_resume); + +int phy_resume(struct phy_device *phydev) +{ + int ret; + + mutex_lock(&phydev->lock); + ret = __phy_resume(phydev); + mutex_unlock(&phydev->lock); + + return ret; +} EXPORT_SYMBOL(phy_resume); int phy_loopback(struct phy_device *phydev, bool enable) --- a/include/linux/phy.h +++ b/include/linux/phy.h @@ -819,6 +819,7 @@ void phy_device_remove(struct phy_device int phy_init_hw(struct phy_device *phydev); int phy_suspend(struct phy_device *phydev); int phy_resume(struct phy_device *phydev); +int __phy_resume(struct phy_device *phydev); int phy_loopback(struct phy_device *phydev, bool enable); struct phy_device *phy_attach(struct net_device *dev, const char *bus_id, phy_interface_t interface); Patches currently in stable-queue which might be from andrew(a)lunn.ch are queue-4.15/net-phy-restore-phy_resume-locking-assumption.patch

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Linux-stable-mirror March 2018