- 22 Mar, 2018 32 commits
-
-
git://git.kernel.org/pub/scm/linux/kernel/git/davem/netLinus Torvalds authored
Pull networking fixes from David Miller: 1) Always validate XFRM esn replay attribute, from Florian Westphal. 2) Fix RCU read lock imbalance in xfrm_get_tos(), from Xin Long. 3) Don't try to get firmware dump if not loaded in iwlwifi, from Shaul Triebitz. 4) Fix BPF helpers to deal with SCTP GSO SKBs properly, from Daniel Axtens. 5) Fix some interrupt handling issues in e1000e driver, from Benjamin Poitier. 6) Use strlcpy() in several ethtool get_strings methods, from Florian Fainelli. 7) Fix rhlist dup insertion, from Paul Blakey. 8) Fix SKB leak in netem packet scheduler, from Alexey Kodanev. 9) Fix driver unload crash when link is up in smsc911x, from Jeremy Linton. 10) Purge out invalid socket types in l2tp_tunnel_create(), from Eric Dumazet. 11) Need to purge the write queue when TCP connections are aborted, otherwise userspace using MSG_ZEROCOPY can't close the fd. From Soheil Hassas Yeganeh. 12) Fix double free in error path of team driver, from Arkadi Sharshevsky. 13) Filter fixes for hv_netvsc driver, from Stephen Hemminger. 14) Fix non-linear packet access in ipv6 ndisc code, from Lorenzo Bianconi. 15) Properly filter out unsupported feature flags in macvlan driver, from Shannon Nelson. 16) Don't request loading the diag module for a protocol if the protocol itself is not even registered. From Xin Long. 17) If datagram connect fails in ipv6, make sure the socket state is consistent afterwards. From Paolo Abeni. 18) Use after free in qed driver, from Dan Carpenter. 19) If received ipv4 PMTU is less than the min pmtu, lock the mtu in the entry. From Sabrina Dubroca. 20) Fix sleep in atomic in tg3 driver, from Jonathan Toppins. 21) Fix vlan in vlan untagging in some situations, from Toshiaki Makita. 22) Fix double SKB free in genlmsg_mcast(). From Nicolas Dichtel. 23) Fix NULL derefs in error paths of tcf_*_init(), from Davide Caratti. 24) Unbalanced PM runtime calls in FEC driver, from Florian Fainelli. 25) Memory leak in gemini driver, from Igor Pylypiv. 26) IDR leaks in error paths of tcf_*_init() functions, from Davide Caratti. 27) Need to use GFP_ATOMIC in seg6_build_state(), from David Lebrun. 28) Missing dev_put() in error path of macsec_newlink(), from Dan Carpenter. * git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (201 commits) macsec: missing dev_put() on error in macsec_newlink() net: dsa: Fix functional dsa-loop dependency on FIXED_PHY hv_netvsc: common detach logic hv_netvsc: change GPAD teardown order on older versions hv_netvsc: use RCU to fix concurrent rx and queue changes hv_netvsc: disable NAPI before channel close net/ipv6: Handle onlink flag with multipath routes ppp: avoid loop in xmit recursion detection code ipv6: sr: fix NULL pointer dereference when setting encap source address ipv6: sr: fix scheduling in RCU when creating seg6 lwtunnel state net: aquantia: driver version bump net: aquantia: Implement pci shutdown callback net: aquantia: Allow live mac address changes net: aquantia: Add tx clean budget and valid budget handling logic net: aquantia: Change inefficient wait loop on fw data reads net: aquantia: Fix a regression with reset on old firmware net: aquantia: Fix hardware reset when SPI may rarely hangup s390/qeth: on channel error, reject further cmd requests s390/qeth: lock read device while queueing next buffer s390/qeth: when thread completes, wake up all waiters ... -
git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/mmcLinus Torvalds authored
Pull MMC fixes from Ulf Hansson: "A couple of MMC fixes intended for v4.16-rc7: MMC host: - dw_mmc: Fix the suspend/resume issue for Exynos5433 - dw_mmc: Fix the DTO/CTO timeout overflow calculation for 32-bit systems - dw_mmc: Make PIO mode work when failing with idmac when dw_mci_reset occurs - sdhci-acpi: Re-allow IRQ 0 to fix broken probe MMC core: - Update EXT_CSD caches to correctly switch partition for ioctl calls - Fix tracepoint print of blk_addr and blksz - Disable HPI on broken Micron (Numonyx) eMMC cards" * tag 'mmc-v4.16-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/mmc: mmc: sdhci-acpi: Fix IRQ 0 mmc: dw_mmc: fix falling from idmac to PIO mode when dw_mci_reset occurs mmc: core: Fix tracepoint print of blk_addr and blksz mmc: core: Disable HPI for certain Micron (Numonyx) eMMC cards mmc: dw_mmc: exynos: fix the suspend/resume issue for exynos5433 mmc: block: fix updating ext_csd caches on ioctl call mmc: dw_mmc: Fix the DTO/CTO timeout overflow calculation for 32-bit systems -
Dan Carpenter authored
We moved the dev_hold(real_dev); call earlier in the function but forgot to update the error paths. Fixes: 0759e552 ("macsec: fix negative refcnt on parent link") Signed-off-by:
Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by:
David S. Miller <davem@davemloft.net>
-
David S. Miller authored
Merge tag 'mac80211-for-davem-2018-03-21' of git://git.kernel.org/pub/scm/linux/kernel/git/jberg/mac80211 Johannes Berg says: ==================== Two more fixes (in three patches): * ath9k_htc doesn't like QoS NDP frames, use regular ones * hwsim: set up wmediumd for radios created later ==================== Signed-off-by:
-
Florian Fainelli authored
We have a functional dependency on the FIXED_PHY MDIO bus because we register fixed PHY devices "the old way" which only works if the code that does this has had a chance to run before the fixed MDIO bus is probed. Make sure we account for that and have dsa_loop_bdinfo.o be either built-in or modular depending on whether CONFIG_FIXED_PHY reflects that too. Fixes: 98cd1552 ("net: dsa: Mock-up driver") Signed-off-by:
Florian Fainelli <f.fainelli@gmail.com> Signed-off-by:
-
David S. Miller authored
Stephen Hemminger says: ==================== hv_netvsc: fix races during shutdown and changes This set of patches fixes issues identified by Vitaly Kuznetsov and Mohammed Gamal related to state changes in Hyper-v network driver. A lot of the issues are because setting up the netvsc device requires a second step (in work queue) to get all the sub-channels running. ==================== Signed-off-by: -
Stephen Hemminger authored
Make common function for detaching internals of device during changes to MTU and RSS. Make sure no more packets are transmitted and all packets have been received before doing device teardown. Change the wait logic to be common and use usleep_range(). Changes transmit enabling logic so that transmit queues are disabled during the period when lower device is being changed. And enabled only after sub channels are setup. This avoids issue where it could be that a packet was being sent while subchannel was not initialized. Fixes: 8195b139 ("hv_netvsc: fix deadlock on hotplug") Signed-off-by:
Stephen Hemminger <sthemmin@microsoft.com> Signed-off-by:
-
Stephen Hemminger authored
On older versions of Windows, the host ignores messages after vmbus channel is closed. Workaround this by doing what Windows does and send the teardown before close on older versions of NVSP protocol. Reported-by:
Mohammed Gamal <mgamal@redhat.com> Fixes: 0cf73780 ("hv_netvsc: netvsc_teardown_gpadl() split") Signed-off-by:
-
Stephen Hemminger authored
The receive processing may continue to happen while the internal network device state is in RCU grace period. The internal RNDIS structure is associated with the internal netvsc_device structure; both have the same RCU lifetime. Defer freeing all associated parts until after grace period. Fixes: 0cf73780 ("hv_netvsc: netvsc_teardown_gpadl() split") Signed-off-by:
-
Stephen Hemminger authored
This makes sure that no CPU is still process packets when the channel is closed. Fixes: 76bb5db5 ("netvsc: fix use after free on module removal") Signed-off-by:
-
David Ahern authored
For multipath routes the ONLINK flag can be specified per nexthop in rtnh_flags or globally in rtm_flags. Update ip6_route_multipath_add to consider the ONLINK setting coming from rtnh_flags. Each loop over nexthops the config for the sibling route is initialized to the global config and then per nexthop settings overlayed. The flag is 'or'ed into fib6_config to handle the ONLINK flag coming from either rtm_flags or rtnh_flags. Fixes: fc1e64e1 ("net/ipv6: Add support for onlink flag") Signed-off-by:
David Ahern <dsahern@gmail.com> Signed-off-by:
-
Guillaume Nault authored
We already detect situations where a PPP channel sends packets back to its upper PPP device. While this is enough to avoid deadlocking on xmit locks, this doesn't prevent packets from looping between the channel and the unit. The problem is that ppp_start_xmit() enqueues packets in ppp->file.xq before checking for xmit recursion. Therefore, __ppp_xmit_process() might dequeue a packet from ppp->file.xq and send it on the channel which, in turn, loops it back on the unit. Then ppp_start_xmit() queues the packet back to ppp->file.xq and __ppp_xmit_process() picks it up and sends it again through the channel. Therefore, the packet will loop between __ppp_xmit_process() and ppp_start_xmit() until some other part of the xmit path drops it. For L2TP, we rapidly fill the skb's headroom and pppol2tp_xmit() drops the packet after a few iterations. But PPTP reallocates the headroom if necessary, letting the loop run and exhaust the machine resources (as reported in https://bugzilla.kernel.org/show_bug.cgi?id=199109). Fix this by letting __ppp_xmit_process() enqueue the skb to ppp->file.xq, so that we can check for recursion before adding it to the queue. Now ppp_xmit_process() can drop the packet when recursion is detected. __ppp_channel_push() is a bit special. It calls __ppp_xmit_process() without having any actual packet to send. This is used by ppp_output_wakeup() to re-enable transmission on the parent unit (for implementations like ppp_async.c, where the .start_xmit() function might not consume the skb, leaving it in ppp->xmit_pending and disabling transmission). Therefore, __ppp_xmit_process() needs to handle the case where skb is NULL, dequeuing as many packets as possible from ppp->file.xq. Reported-by:
xu heng <xuheng333@zoho.com> Fixes: 55454a56 ("ppp: avoid dealock on recursive xmit") Signed-off-by:
Guillaume Nault <g.nault@alphalink.fr> Signed-off-by:
-
David Lebrun authored
When using seg6 in encap mode, we call ipv6_dev_get_saddr() to set the source address of the outer IPv6 header, in case none was specified. Using skb->dev can lead to BUG() when it is in an inconsistent state. This patch uses the net_device attached to the skb's dst instead. [940807.667429] BUG: unable to handle kernel NULL pointer dereference at 000000000000047c [940807.762427] IP: ipv6_dev_get_saddr+0x8b/0x1d0 [940807.815725] PGD 0 P4D 0 [940807.847173] Oops: 0000 [#1] SMP PTI [940807.890073] Modules linked in: [940807.927765] CPU: 6 PID: 0 Comm: swapper/6 Tainted: G W 4.16.0-rc1-seg6bpf+ #2 [940808.028988] Hardware name: HP ProLiant DL120 G6/ProLiant DL120 G6, BIOS O26 09/06/2010 [940808.128128] RIP: 0010:ipv6_dev_get_saddr+0x8b/0x1d0 [940808.187667] RSP: 0018:ffff88043fd836b0 EFLAGS: 00010206 [940808.251366] RAX: 0000000000000005 RBX: ffff88042cb1c860 RCX: 00000000000000fe [940808.338025] RDX: 00000000000002c0 RSI: ffff88042cb1c860 RDI: 0000000000004500 [940808.424683] RBP: ffff88043fd83740 R08: 0000000000000000 R09: ffffffffffffffff [940808.511342] R10: 0000000000000040 R11: 0000000000000000 R12: ffff88042cb1c850 [940808.598012] R13: ffffffff8208e380 R14: ffff88042ac8da00 R15: 0000000000000002 [940808.684675] FS: 0000000000000000(0000) GS:ffff88043fd80000(0000) knlGS:0000000000000000 [940808.783036] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [940808.852975] CR2: 000000000000047c CR3: 00000004255fe000 CR4: 00000000000006e0 [940808.939634] Call Trace: [940808.970041] <IRQ> [940808.995250] ? ip6t_do_table+0x265/0x640 [940809.043341] seg6_do_srh_encap+0x28f/0x300 [940809.093516] ? seg6_do_srh+0x1a0/0x210 [940809.139528] seg6_do_srh+0x1a0/0x210 [940809.183462] seg6_output+0x28/0x1e0 [940809.226358] lwtunnel_output+0x3f/0x70 [940809.272370] ip6_xmit+0x2b8/0x530 [940809.313185] ? ac6_proc_exit+0x20/0x20 [940809.359197] inet6_csk_xmit+0x7d/0xc0 [940809.404173] tcp_transmit_skb+0x548/0x9a0 [940809.453304] __tcp_retransmit_skb+0x1a8/0x7a0 [940809.506603] ? ip6_default_advmss+0x40/0x40 [940809.557824] ? tcp_current_mss+0x24/0x90 [940809.605925] tcp_retransmit_skb+0xd/0x80 [940809.654016] tcp_xmit_retransmit_queue.part.17+0xf9/0x210 [940809.719797] tcp_ack+0xa47/0x1110 [940809.760612] tcp_rcv_established+0x13c/0x570 [940809.812865] tcp_v6_do_rcv+0x151/0x3d0 [940809.858879] tcp_v6_rcv+0xa5c/0xb10 [940809.901770] ? seg6_output+0xdd/0x1e0 [940809.946745] ip6_input_finish+0xbb/0x460 [940809.994837] ip6_input+0x74/0x80 [940810.034612] ? ip6_rcv_finish+0xb0/0xb0 [940810.081663] ipv6_rcv+0x31c/0x4c0 ... Fixes: 6c8702c6 ("ipv6: sr: add support for SRH encapsulation and injection with lwtunnels") Reported-by:
Tom Herbert <tom@quantonium.net> Signed-off-by:
David Lebrun <dlebrun@google.com> Signed-off-by:
-
David Lebrun authored
The seg6_build_state() function is called with RCU read lock held, so we cannot use GFP_KERNEL. This patch uses GFP_ATOMIC instead. [ 92.770271] ============================= [ 92.770628] WARNING: suspicious RCU usage [ 92.770921] 4.16.0-rc4+ #12 Not tainted [ 92.771277] ----------------------------- [ 92.771585] ./include/linux/rcupdate.h:302 Illegal context switch in RCU read-side critical section! [ 92.772279] [ 92.772279] other info that might help us debug this: [ 92.772279] [ 92.773067] [ 92.773067] rcu_scheduler_active = 2, debug_locks = 1 [ 92.773514] 2 locks held by ip/2413: [ 92.773765] #0: (rtnl_mutex){+.+.}, at: [<00000000e5461720>] rtnetlink_rcv_msg+0x441/0x4d0 [ 92.774377] #1: (rcu_read_lock){....}, at: [<00000000df4f161e>] lwtunnel_build_state+0x59/0x210 [ 92.775065] [ 92.775065] stack backtrace: [ 92.775371] CPU: 0 PID: 2413 Comm: ip Not tainted 4.16.0-rc4+ #12 [ 92.775791] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.10.2-1.fc27 04/01/2014 [ 92.776608] Call Trace: [ 92.776852] dump_stack+0x7d/0xbc [ 92.777130] __schedule+0x133/0xf00 [ 92.777393] ? unwind_get_return_address_ptr+0x50/0x50 [ 92.777783] ? __sched_text_start+0x8/0x8 [ 92.778073] ? rcu_is_watching+0x19/0x30 [ 92.778383] ? kernel_text_address+0x49/0x60 [ 92.778800] ? __kernel_text_address+0x9/0x30 [ 92.779241] ? unwind_get_return_address+0x29/0x40 [ 92.779727] ? pcpu_alloc+0x102/0x8f0 [ 92.780101] _cond_resched+0x23/0x50 [ 92.780459] __mutex_lock+0xbd/0xad0 [ 92.780818] ? pcpu_alloc+0x102/0x8f0 [ 92.781194] ? seg6_build_state+0x11d/0x240 [ 92.781611] ? save_stack+0x9b/0xb0 [ 92.781965] ? __ww_mutex_wakeup_for_backoff+0xf0/0xf0 [ 92.782480] ? seg6_build_state+0x11d/0x240 [ 92.782925] ? lwtunnel_build_state+0x1bd/0x210 [ 92.783393] ? ip6_route_info_create+0x687/0x1640 [ 92.783846] ? ip6_route_add+0x74/0x110 [ 92.784236] ? inet6_rtm_newroute+0x8a/0xd0 Fixes: 6c8702c6 ("ipv6: sr: add support for SRH encapsulation and injection with lwtunnels") Signed-off-by: -
David S. Miller authored
Igor Russkikh says: ==================== Aquantia atlantic hot fixes 03-2018 This is a set of atlantic driver hot fixes for various areas: Some issues with hardware reset covered, Fixed napi_poll flood happening on some traffic conditions, Allow system to change MAC address on live device, Add pci shutdown handler. patch v2: - reverse christmas tree - remove driver private parameter, replacing it with define. ==================== Signed-off-by: -
Igor Russkikh authored
Signed-off-by:
Igor Russkikh <igor.russkikh@aquantia.com> Signed-off-by:
-
Igor Russkikh authored
We should close link and all NIC operations during shutdown. On some systems graceful reboot never closes NIC interface on its own, but only indicates pci device shutdown. Without explicit handler, NIC rx rings continued to transfer DMA data into prepared buffers while CPU rebooted already. That caused memory corruptions on soft reboot. Signed-off-by:
-
Igor Russkikh authored
There is nothing prevents us from changing MAC on the running interface. Allow this with ndev priv flag. Signed-off-by:
-
Igor Russkikh authored
We should report to napi full budget only when we have more job to do. Before this fix, on any tx queue cleanup we forced napi to do poll again. Thats a waste of cpu resources and caused storming with napi polls when there was at least one tx on each interrupt. With this fix we report full budget only when there is more job on TX to do. Or, as before, when rx budget was fully consumed. Signed-off-by:
-
Igor Russkikh authored
B1 hardware changes behavior of mailbox interface, it has busy bit always raised. Data ready condition should be detected by increment of address register. Old code has empty `for` loop, and that caused cpu overloads on B1 hardware. aq_nic_service_timer_cb consumed ~100ms because of that. Signed-off-by:
-
Igor Russkikh authored
FW 1.5.58 and below needs a fixed delay even after 0x18 register is filled. Otherwise, setting MPI_INIT state too fast causes traffic hang. Signed-off-by:
-
Igor Russkikh authored
Under some circumstances (notably using thunderbolt interface) SPI on chip reset may be in active transaction. Here we forcibly cleanup SPI to prevent possible hangups. Signed-off-by:
-
David S. Miller authored
Julian Wiedmann says: ==================== s390/qeth: fixes 2018-03-20 Please apply one final set of qeth patches for 4.16. All of these fix long-standing bugs, so please queue them up for -stable as well. ==================== Signed-off-by: -
Julian Wiedmann authored
When the IRQ handler determines that one of the cmd IO channels has failed and schedules recovery, block any further cmd requests from being submitted. The request would inevitably stall, and prevent the recovery from making progress until the request times out. This sort of error was observed after Live Guest Relocation, where the pending IO on the READ channel intentionally gets terminated to kick-start recovery. Simultaneously the guest executed SIOCETHTOOL, triggering qeth to issue a QUERY CARD INFO command. The command then stalled in the inoperabel WRITE channel. Signed-off-by:
Julian Wiedmann <jwi@linux.vnet.ibm.com> Signed-off-by:
-
Julian Wiedmann authored
For calling ccw_device_start(), issue_next_read() needs to hold the device's ccwlock. This is satisfied for the IRQ handler path (where qeth_irq() gets called under the ccwlock), but we need explicit locking for the initial call by the MPC initialization. Signed-off-by:
-
Julian Wiedmann authored
qeth_wait_for_threads() is potentially called by multiple users, make sure to notify all of them after qeth_clear_thread_running_bit() adjusted the thread_running_mask. With no timeout, callers would otherwise stall. Signed-off-by:
-
Julian Wiedmann authored
On removal, a qeth card's netdevice is currently not properly freed because the call chain looks as follows: qeth_core_remove_device(card) lx_remove_device(card) unregister_netdev(card->dev) card->dev = NULL !!! qeth_core_free_card(card) if (card->dev) !!! free_netdev(card->dev) Fix it by free'ing the netdev straight after unregistering. This also fixes the sysfs-driven layer switch case (qeth_dev_layer2_store()), where the need to free the current netdevice was not considered at all. Note that free_netdev() takes care of the netif_napi_del() for us too. Fixes: 4a71df50 ("qeth: new qeth device driver") Signed-off-by:
Ursula Braun <ubraun@linux.vnet.ibm.com> Signed-off-by:
-
David S. Miller authored
Kevin Hao says: ==================== net: phy: Add general dummy stubs for MMD register access v2: As suggested by Andrew: - Add general dummy stubs - Also use that for the micrel phy This patch series fix the Ethernet broken on the mpc8315erdb board introduced by commit b6b5e8a6 ("gianfar: Disable EEE autoneg by default"). ==================== Signed-off-by:
-
Kevin Hao authored
The new general dummy stubs for MMD register access were introduced. Use that for the codes reuse. Signed-off-by:
Kevin Hao <haokexin@gmail.com> Signed-off-by:
-
Kevin Hao authored
The Ethernet on mpc8315erdb is broken since commit b6b5e8a6 ("gianfar: Disable EEE autoneg by default"). The reason is that even though the rtl8211b doesn't support the MMD extended registers access, it does return some random values if we trying to access the MMD register via indirect method. This makes it seem that the EEE is supported by this phy device. And the subsequent writing to the MMD registers does cause the phy malfunction. So use the dummy stubs for the MMD register access to fix this issue. Fixes: b6b5e8a6 ("gianfar: Disable EEE autoneg by default") Signed-off-by:
-
Kevin Hao authored
For some phy devices, even though they don't support the MMD extended register access, it does have some side effect if we are trying to read/write the MMD registers via indirect method. So introduce general dummy stubs for MMD register access which these devices can use to avoid such side effect. Fixes: b6b5e8a6 ("gianfar: Disable EEE autoneg by default") Signed-off-by:
-
git://git.open-mesh.org/linux-mergeDavid S. Miller authored
Simon Wunderlich says: ==================== Here are some batman-adv bugfixes: - fix possible IPv6 packet loss when multicast extension is used, by Linus Luessing - fix SKB handling issues for TTVN and DAT, by Matthias Schiffer (two patches) - fix include for eventpoll, by Sven Eckelmann - fix skb checksum for ttvn reroutes, by Sven Eckelmann ==================== Signed-off-by:
-
- 21 Mar, 2018 8 commits
-
-
David S. Miller authored
Davide Caratti says: ==================== fix idr leak in actions This series fixes situations where a temporary failure to install a TC action results in the permanent impossibility to reuse the configured value of 'index'. Thanks to Cong Wang for the initial review. v2: fix build error in act_ipt.c, reported by kbuild test robot ==================== Acked-by:
Cong Wang <xiyou.wangcong@gmail.com> Signed-off-by:
-
Davide Caratti authored
tcf_skbmod_init() can fail after the idr has been successfully reserved. When this happens, every subsequent attempt to configure skbmod rules using the same idr value will systematically fail with -ENOSPC, unless the first attempt was done using the 'replace' keyword: # tc action add action skbmod swap mac index 100 RTNETLINK answers: Cannot allocate memory We have an error talking to the kernel # tc action add action skbmod swap mac index 100 RTNETLINK answers: No space left on device We have an error talking to the kernel # tc action add action skbmod swap mac index 100 RTNETLINK answers: No space left on device We have an error talking to the kernel ... Fix this in tcf_skbmod_init(), ensuring that tcf_idr_release() is called on the error path when the idr has been reserved, but not yet inserted. Also, don't test 'ovr' in the error path, to avoid a 'replace' failure implicitly become a 'delete' that leaks refcount in act_skbmod module: # rmmod act_skbmod; modprobe act_skbmod # tc action add action skbmod swap mac index 100 # tc action add action skbmod swap mac continue index 100 RTNETLINK answers: File exists We have an error talking to the kernel # tc action replace action skbmod swap mac continue index 100 RTNETLINK answers: Cannot allocate memory We have an error talking to the kernel # tc action list action skbmod # # rmmod act_skbmod rmmod: ERROR: Module act_skbmod is in use Fixes: 65a206c0 ("net/sched: Change act_api and act_xxx modules to use IDR") Acked-by:
Jamal Hadi Salim <jhs@mojatatu.com> Signed-off-by:
Davide Caratti <dcaratti@redhat.com> Signed-off-by:
-
Davide Caratti authored
tcf_vlan_init() can fail after the idr has been successfully reserved. When this happens, every subsequent attempt to configure vlan rules using the same idr value will systematically fail with -ENOSPC, unless the first attempt was done using the 'replace' keyword. # tc action add action vlan pop index 100 RTNETLINK answers: Cannot allocate memory We have an error talking to the kernel # tc action add action vlan pop index 100 RTNETLINK answers: No space left on device We have an error talking to the kernel # tc action add action vlan pop index 100 RTNETLINK answers: No space left on device We have an error talking to the kernel ... Fix this in tcf_vlan_init(), ensuring that tcf_idr_release() is called on the error path when the idr has been reserved, but not yet inserted. Also, don't test 'ovr' in the error path, to avoid a 'replace' failure implicitly become a 'delete' that leaks refcount in act_vlan module: # rmmod act_vlan; modprobe act_vlan # tc action add action vlan push id 5 index 100 # tc action replace action vlan push id 7 index 100 RTNETLINK answers: Cannot allocate memory We have an error talking to the kernel # tc action list action vlan # # rmmod act_vlan rmmod: ERROR: Module act_vlan is in use Fixes: 4c5b9d96 ("act_vlan: VLAN action rewrite to use RCU lock/unlock and update") Fixes: 65a206c0 ("net/sched: Change act_api and act_xxx modules to use IDR") Acked-by:
-
Davide Caratti authored
__tcf_ipt_init() can fail after the idr has been successfully reserved. When this happens, subsequent attempts to configure xt/ipt rules using the same idr value systematically fail with -ENOSPC: # tc action add action xt -j LOG --log-prefix test1 index 100 tablename: mangle hook: NF_IP_POST_ROUTING target: LOG level warning prefix "test1" index 100 RTNETLINK answers: Cannot allocate memory We have an error talking to the kernel Command "(null)" is unknown, try "tc actions help". # tc action add action xt -j LOG --log-prefix test1 index 100 tablename: mangle hook: NF_IP_POST_ROUTING target: LOG level warning prefix "test1" index 100 RTNETLINK answers: No space left on device We have an error talking to the kernel Command "(null)" is unknown, try "tc actions help". # tc action add action xt -j LOG --log-prefix test1 index 100 tablename: mangle hook: NF_IP_POST_ROUTING target: LOG level warning prefix "test1" index 100 RTNETLINK answers: No space left on device We have an error talking to the kernel ... Fix this in the error path of __tcf_ipt_init(), calling tcf_idr_release() in place of tcf_idr_cleanup(). Since tcf_ipt_release() can now be called when tcfi_t is NULL, we also need to protect calls to ipt_destroy_target() to avoid NULL pointer dereference. Fixes: 65a206c0 ("net/sched: Change act_api and act_xxx modules to use IDR") Acked-by: -
Davide Caratti authored
tcf_pedit_init() can fail to allocate 'keys' after the idr has been successfully reserved. When this happens, subsequent attempts to configure a pedit rule using the same idr value systematically fail with -ENOSPC: # tc action add action pedit munge ip ttl set 63 index 100 RTNETLINK answers: Cannot allocate memory We have an error talking to the kernel # tc action add action pedit munge ip ttl set 63 index 100 RTNETLINK answers: No space left on device We have an error talking to the kernel # tc action add action pedit munge ip ttl set 63 index 100 RTNETLINK answers: No space left on device We have an error talking to the kernel ... Fix this in the error path of tcf_act_pedit_init(), calling tcf_idr_release() in place of tcf_idr_cleanup(). Fixes: 65a206c0 ("net/sched: Change act_api and act_xxx modules to use IDR") Acked-by:
-
Davide Caratti authored
tcf_act_police_init() can fail after the idr has been successfully reserved (e.g., qdisc_get_rtab() may return NULL). When this happens, subsequent attempts to configure a police rule using the same idr value systematiclly fail with -ENOSPC: # tc action add action police rate 1000 burst 1000 drop index 100 RTNETLINK answers: Cannot allocate memory We have an error talking to the kernel # tc action add action police rate 1000 burst 1000 drop index 100 RTNETLINK answers: No space left on device We have an error talking to the kernel # tc action add action police rate 1000 burst 1000 drop index 100 RTNETLINK answers: No space left on device ... Fix this in the error path of tcf_act_police_init(), calling tcf_idr_release() in place of tcf_idr_cleanup(). Fixes: 65a206c0 ("net/sched: Change act_api and act_xxx modules to use IDR") Acked-by:
-
Davide Caratti authored
if the kernel fails to duplicate 'sdata', creation of a new action fails with -ENOMEM. However, subsequent attempts to install the same action using the same value of 'index' systematically fail with -ENOSPC, and that value of 'index' will no more be usable by act_simple, until rmmod / insmod of act_simple.ko is done: # tc actions add action simple sdata hello index 100 # tc actions list action simple action order 0: Simple <hello> index 100 ref 1 bind 0 # tc actions flush action simple # tc actions add action simple sdata hello index 100 RTNETLINK answers: Cannot allocate memory We have an error talking to the kernel # tc actions flush action simple # tc actions add action simple sdata hello index 100 RTNETLINK answers: No space left on device We have an error talking to the kernel # tc actions add action simple sdata hello index 100 RTNETLINK answers: No space left on device We have an error talking to the kernel ... Fix this in the error path of tcf_simp_init(), calling tcf_idr_release() in place of tcf_idr_cleanup(). Fixes: 65a206c0 ("net/sched: Change act_api and act_xxx modules to use IDR") Suggested-by: -
Davide Caratti authored
when the following command sequence is entered # tc action add action bpf bytecode '4,40 0 0 12,31 0 1 2048,6 0 0 262144,6 0 0 0' index 100 RTNETLINK answers: Invalid argument We have an error talking to the kernel # tc action add action bpf bytecode '4,40 0 0 12,21 0 1 2048,6 0 0 262144,6 0 0 0' index 100 RTNETLINK answers: No space left on device We have an error talking to the kernel act_bpf correctly refuses to install the first TC rule, because 31 is not a valid instruction. However, it refuses to install the second TC rule, even if the BPF code is correct. Furthermore, it's no more possible to install any other rule having the same value of 'index' until act_bpf module is unloaded/inserted again. After the idr has been reserved, call tcf_idr_release() instead of tcf_idr_cleanup(), to fix this issue. Fixes: 65a206c0 ("net/sched: Change act_api and act_xxx modules to use IDR") Acked-by:
-
