- 21 Jul, 2015 8 commits
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Shaohui Xie authored
We store c45 PHY's id information in c45_ids, so it should be used to check the matching between PHY driver and PHY device for c45 PHY. Signed-off-by:
Shaohui Xie <Shaohui.Xie@freescale.com> Signed-off-by:
David S. Miller <davem@davemloft.net>
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Konstantin Khlebnikov authored
Kernel generates a lot of warnings when dst entry reference counter overflows and becomes negative. That bug was seen several times at machines with outdated 3.10.y kernels. Most like it's already fixed in upstream. Anyway that flood completely kills machine and makes further debugging impossible. Signed-off-by:
Konstantin Khlebnikov <khlebnikov@yandex-team.ru> Signed-off-by:
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Eric Dumazet authored
1) If sk_filter() is applied, skb was leaked (not freed) 2) Testing SOCK_DEAD twice is racy : packet could be freed while already queued. 3) Remove obsolete comment about caching skb->len Signed-off-by:
Eric Dumazet <edumazet@google.com> Signed-off-by:
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Reinhard Speyerer authored
Sierra Wireless MC7305/MC7355 with USB ID 1199:9041 also provide a second QMI/network interface like the MC73xx with USB ID 1199:68c0 on USB interface #10 when used in the appropriate USB configuration. Add the corresponding QMI_FIXED_INTF entry to the qmi_wwan driver. Please note that the second QMI/network interface is not working for early MC73xx firmware versions like 01.08.x as the device does not respond to QMI messages on the second /dev/cdc-wdm port. Signed-off-by:
Reinhard Speyerer <rspmn@arcor.de> Signed-off-by:
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Sergei Shtylyov authored
The TCCR.TSRQn bit may get clearead after TCCR gets read, so that TCCR write would get skipped. We don't need to check this bit before setting. Signed-off-by:
Sergei Shtylyov <sergei.shtylyov@cogentembedded.com> Signed-off-by:
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Karicheri, Muralidharan authored
The keystone qmss will raise interrupt when packet arrive at the receive queue. Only control available to avoid interrupt from happening is to keep the free descriptor queue (FDQ) empty in the receive side. So the filling of descriptors into the FDQ has to happen after request_irq() call is made as part of knav_queue_enable_notify(). So move the function netcp_rxpool_refill() after this call. Signed-off-by:
Murali Karicheri <m-karicheri2@ti.com> Signed-off-by:
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dingtianhong authored
The "follow" fail_over_mac policy is useful for multiport devices that either become confused or incur a performance penalty when multiple ports are programmed with the same MAC address, but the same MAC address still may happened by this steps for this policy: 1) echo +eth0 > /sys/class/net/bond0/bonding/slaves bond0 has the same mac address with eth0, it is MAC1. 2) echo +eth1 > /sys/class/net/bond0/bonding/slaves eth1 is backup, eth1 has MAC2. 3) ifconfig eth0 down eth1 became active slave, bond will swap MAC for eth0 and eth1, so eth1 has MAC1, and eth0 has MAC2. 4) ifconfig eth1 down there is no active slave, and eth1 still has MAC1, eth2 has MAC2. 5) ifconfig eth0 up the eth0 became active slave again, the bond set eth0 to MAC1. Something wrong here, then if you set eth1 up, the eth0 and eth1 will have the same MAC address, it will break this policy for ACTIVE_BACKUP mode. This patch will fix this problem by finding the old active slave and swap them MAC address before change active slave. Signed-off-by:
Ding Tianhong <dingtianhong@huawei.com> Tested-by:
Nikolay Aleksandrov <nikolay@cumulusnetworks.com> Signed-off-by:
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David S. Miller authored
Merge tag 'linux-can-fixes-for-4.2-20150716' of git://git.kernel.org/pub/scm/linux/kernel/git/mkl/linux-can Marc Kleine-Budde says: ==================== pull-request: can 2015-07-16 this is a pull request of 2 patches by Stefan Agner. He fixes the resume operation in the mcp251x driver. ==================== Signed-off-by:
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- 20 Jul, 2015 6 commits
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Herbert Xu authored
This patch reverts 19424e05 ("sit: Add gro callbacks to sit_offload") because it generates packets that cannot be handled even by our own GSO. Reported-by:
Wolfgang Walter <linux@stwm.de> Signed-off-by:
Herbert Xu <herbert@gondor.apana.org.au> Signed-off-by:
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Florian Fainelli authored
7445E0 contains an ECO which disconnected the internal SF2 pseudo-PHY which was known to conflict with the external pseudo-PHY of BCM53125 switches. This motivated the need to utilize the internal SF2 MDIO controller via indirect register reads/writes to control external Broadcom switches due to this address conflict (both responded at address 30d). For 7445E0, the internal pseudo-PHY of the SF2 switch got disconnected, and as a consequence this prevents the internal SF2 MDIO bus controller from reading data (reads back everything as 0) since the MDI line is tied low. Fix this by making the indirect register reads and writes conditional to 7445D0, on 7445E0 we can utilize the SWITCH_MDIO controller (backed by mdio-unimac and not the DSA created slave MII bus). We utilize of_machine_is_compatible() here since this is the only way for use to differentiate between these two chips in a way that does not violate layers or becomes (too) vendor-specific. Signed-off-by:
Florian Fainelli <f.fainelli@gmail.com> Signed-off-by:
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Nikolay Aleksandrov authored
If the bond is enslaving a device with different type it will be setup by it, but if after being setup the enslave fails the bond doesn't switch back its type and also keeps pointers to foreign structures that can be long gone. Thus revert back any type changes if the enslave failed and the bond had to change its type. Example: Before patch: $ echo lo > bond0/bonding/slaves -bash: echo: write error: Cannot assign requested address $ ip l sh bond0 20: bond0: <BROADCAST,MULTICAST,MASTER> mtu 1500 qdisc noop state DOWN mode DEFAULT group default link/loopback 16:54:78:34:bd:41 brd 00:00:00:00:00:00 $ echo +eth1 > bond0/bonding/slaves $ ip l sh bond0 20: bond0: <BROADCAST,MULTICAST> mtu 1500 qdisc noop state DOWN mode DEFAULT group default qlen 1000 link/ether 52:54:00:3f:47:69 brd ff:ff:ff:ff:ff:ff (notice the MASTER flag is gone) After patch: $ echo lo > bond0/bonding/slaves -bash: echo: write error: Cannot assign requested address $ ip l sh bond0 21: bond0: <BROADCAST,MULTICAST,MASTER> mtu 1500 qdisc noop state DOWN mode DEFAULT group default qlen 1000 link/ether 6e:66:94:f6:07:fc brd ff:ff:ff:ff:ff:ff $ echo +eth1 > bond0/bonding/slaves $ ip l sh bond0 21: bond0: <BROADCAST,MULTICAST,MASTER> mtu 1500 qdisc noop state DOWN mode DEFAULT group default qlen 1000 link/ether 52:54:00:3f:47:69 brd ff:ff:ff:ff:ff:ff Signed-off-by: -
Nikolay Aleksandrov authored
When the bonding is being unloaded and the netdevice notifier is unregistered it executes NETDEV_UNREGISTER for each device which should remove the bond's proc entry but if the device enslaved is not of ARPHRD_ETHER type and is in front of the bonding, it may execute bond_release_and_destroy() first which would release the last slave and destroy the bond device leaving the proc entry and thus we will get the following error (with dynamic debug on for bond_netdev_event to see the events order): [ 908.963051] eql: event: 9 [ 908.963052] eql: IFF_SLAVE [ 908.963054] eql: event: 2 [ 908.963056] eql: IFF_SLAVE [ 908.963058] eql: event: 6 [ 908.963059] eql: IFF_SLAVE [ 908.963110] bond0: Releasing active interface eql [ 908.976168] bond0: Destroying bond bond0 [ 908.976266] bond0 (unregistering): Released all slaves [ 908.984097] ------------[ cut here ]------------ [ 908.984107] WARNING: CPU: 0 PID: 1787 at fs/proc/generic.c:575 remove_proc_entry+0x112/0x160() [ 908.984110] remove_proc_entry: removing non-empty directory 'net/bonding', leaking at least 'bond0' [ 908.984111] Modules linked in: bonding(-) eql(O) 9p nfsd auth_rpcgss oid_registry nfs_acl nfs lockd grace fscache sunrpc crct10dif_pclmul crc32_pclmul crc32c_intel ghash_clmulni_intel ppdev qxl drm_kms_helper snd_hda_codec_generic aesni_intel ttm aes_x86_64 glue_helper pcspkr lrw gf128mul ablk_helper cryptd snd_hda_intel virtio_console snd_hda_codec psmouse serio_raw snd_hwdep snd_hda_core 9pnet_virtio 9pnet evdev joydev drm virtio_balloon snd_pcm snd_timer snd soundcore i2c_piix4 i2c_core pvpanic acpi_cpufreq parport_pc parport processor thermal_sys button autofs4 ext4 crc16 mbcache jbd2 hid_generic usbhid hid sg sr_mod cdrom ata_generic virtio_blk virtio_net floppy ata_piix e1000 libata ehci_pci virtio_pci scsi_mod uhci_hcd ehci_hcd virtio_ring virtio usbcore usb_common [last unloaded: bonding] [ 908.984168] CPU: 0 PID: 1787 Comm: rmmod Tainted: G W O 4.2.0-rc2+ #8 [ 908.984170] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 908.984172] 0000000000000000 ffffffff81732d41 ffffffff81525b34 ffff8800358dfda8 [ 908.984175] ffffffff8106c521 ffff88003595af78 ffff88003595af40 ffff88003e3a4280 [ 908.984178] ffffffffa058d040 0000000000000000 ffffffff8106c59a ffffffff8172ebd0 [ 908.984181] Call Trace: [ 908.984188] [<ffffffff81525b34>] ? dump_stack+0x40/0x50 [ 908.984193] [<ffffffff8106c521>] ? warn_slowpath_common+0x81/0xb0 [ 908.984196] [<ffffffff8106c59a>] ? warn_slowpath_fmt+0x4a/0x50 [ 908.984199] [<ffffffff81218352>] ? remove_proc_entry+0x112/0x160 [ 908.984205] [<ffffffffa05850e6>] ? bond_destroy_proc_dir+0x26/0x30 [bonding] [ 908.984208] [<ffffffffa057540e>] ? bond_net_exit+0x8e/0xa0 [bonding] [ 908.984217] [<ffffffff8142f407>] ? ops_exit_list.isra.4+0x37/0x70 [ 908.984225] [<ffffffff8142f52d>] ? unregister_pernet_operations+0x8d/0xd0 [ 908.984228] [<ffffffff8142f58d>] ? unregister_pernet_subsys+0x1d/0x30 [ 908.984232] [<ffffffffa0585269>] ? bonding_exit+0x23/0xdba [bonding] [ 908.984236] [<ffffffff810e28ba>] ? SyS_delete_module+0x18a/0x250 [ 908.984241] [<ffffffff81086f99>] ? task_work_run+0x89/0xc0 [ 908.984244] [<ffffffff8152b732>] ? entry_SYSCALL_64_fastpath+0x16/0x75 [ 908.984247] ---[ end trace 7c006ed4abbef24b ]--- Thus remove the proc entry manually if bond_release_and_destroy() is used. Because of the checks in bond_remove_proc_entry() it's not a problem for a bond device to change namespaces (the bug fixed by the Fixes commit) but since commit f9399814 ("bonding: Don't allow bond devices to change network namespaces.") that can't happen anyway. Reported-by:
Carol Soto <clsoto@linux.vnet.ibm.com> Signed-off-by:
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Vivien Didelot authored
The mv88e6xxx_priv_state structure contains an fid_mask, where 1 means the FID is free to use, 0 means the FID is in use. This patch fixes the bit clear in mv88e6xxx_leave_bridge() when assigning a new FID to a port. Example scenario: I have 7 ports, port 5 is CPU, port 6 is unused (no PHY). After setting the ports 0, 1 and 2 in bridge br0, and ports 3 and 4 in bridge br1, I have the following fid_mask: 0b111110010110 (0xf96). Indeed, br0 uses FID 0, and br1 uses FID 3. After setting nomaster for port 0, I get the wrong fid_mask: 0b10 (0x2). With this patch we correctly get 0b111110010100 (0xf94), meaning port 0 uses FID 1, br0 uses FID 0, and br1 uses FID 3. Signed-off-by:
Vivien Didelot <vivien.didelot@savoirfairelinux.com> Reviewed-by:
Guenter Roeck <linux@roeck-us.net> Signed-off-by:
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Michael S. Tsirkin authored
ANY_LAYOUT is a compatibility feature. It's implied for VERSION_1 devices, and non-transitional devices might not offer it. Change code to behave accordingly. Signed-off-by:
Michael S. Tsirkin <mst@redhat.com> Reviewed-by:
Paolo Bonzini <pbonzini@redhat.com> Reviewed-by:
Stefan Hajnoczi <stefanha@redhat.com> Signed-off-by:
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- 17 Jul, 2015 1 commit
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Sergei Shtylyov authored
First, dma_sync_single_for_cpu() shouldn't have been called in the first place (it's a streaming DMA API), dma_unmap_single() should have been called instead. Second, dma_unmap_single() call after handing the buffer to napi_gro_receive() makes little sense. Moreover desc->dptr might not be valid at this point. Signed-off-by:
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- 16 Jul, 2015 21 commits
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Stefan Agner authored
The regulators power and transceiver are optional. If those are not present, the pointer (or error pointer) is correctly handled by the driver, hence we can use devm_regulator_get_optional safely, which avoids regulators getting created. Signed-off-by:
Stefan Agner <stefan@agner.ch> Signed-off-by:
Marc Kleine-Budde <mkl@pengutronix.de>
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Stefan Agner authored
If a valid power regulator or a dummy regulator is used (which happens to be the case when no regulator is specified), restart_work is queued no matter whether the device was running or not at suspend time. Since work queues get initialized in the ndo_open callback, resuming leads to a NULL pointer exception. Reverse exactly the steps executed at suspend time: - Enable the power regulator in any case - Enable the transceiver regulator if the device was running, even in case we have a power regulator - Queue restart_work only in case the device was running Fixes: bf66f373 ("can: mcp251x: Move to threaded interrupts instead of workqueues.") Signed-off-by:
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git://git.kernel.org/pub/scm/linux/kernel/git/bluetooth/bluetoothDavid S. Miller authored
Johan Hedberg says: ==================== pull request: bluetooth 2015-07-15 Here's a regression fix for Broadcom Bluetooth adapters found at least in certain Apple laptops. The issue was introduced in 4.1 so there's the appropriate "Cc: stable" entry for it. ==================== Signed-off-by: -
Alexei Starovoitov authored
prog->bpf_ops is populated when act_bpf is used with classic BPF and prog->bpf_name is optionally used with extended BPF. Fix memory leak when act_bpf is released. Fixes: d23b8ad8 ("tc: add BPF based action") Fixes: a8cb5f55 ("act_bpf: add initial eBPF support for actions") Acked-by:
Daniel Borkmann <daniel@iogearbox.net> Signed-off-by:
Alexei Starovoitov <ast@plumgrid.com> Signed-off-by:
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WANG Cong authored
The ->drop() is supposed to return the number of bytes it dropped, however fq_codel_drop() returns the index of the flow where it drops a packet from. Fix this by introducing a helper to wrap fq_codel_drop(). Cc: Eric Dumazet <edumazet@google.com> Signed-off-by:
Cong Wang <xiyou.wangcong@gmail.com> Signed-off-by:
Cong Wang <cwang@twopensource.com> Acked-by:
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WANG Cong authored
Fixes: 25331d6c ("net: sched: implement qstat helper routines") Cc: John Fastabend <john.fastabend@gmail.com> Signed-off-by:
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David S. Miller authored
Konstantin Khlebnikov says: ==================== ipvlan: cleanups and fixes v1: http://comments.gmane.org/gmane.linux.network/363346 v2: http://comments.gmane.org/gmane.linux.network/369086 v3 has reduced set of patches from "ipvlan: fix ipv6 autoconfiguration". Here just cleanups and patch which ignores ipv6 notifications from RA. ==================== Signed-off-by:
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Konstantin Khlebnikov authored
Inet6addr notifier is atomic and runs in bh context without RTNL when ipv6 receives router advertisement packet and performs autoconfiguration. Proper fix still in discussion. Let's at least plug the bug. v1: http://lkml.kernel.org/r/20150514135618.14062.1969.stgit@buzz v2: http://lkml.kernel.org/r/20150703125840.24121.91556.stgit@buzzSigned-off-by:
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WANG Cong authored
In tx path rcu_read_lock_bh() is held, so we need rcu_deference_bh(). This fixes the following warning: =============================== [ INFO: suspicious RCU usage. ] 4.1.0-rc1+ #1007 Not tainted ------------------------------- drivers/net/ipvlan/ipvlan.h:106 suspicious rcu_dereference_check() usage! other info that might help us debug this: rcu_scheduler_active = 1, debug_locks = 0 1 lock held by dhclient/1076: #0: (rcu_read_lock_bh){......}, at: [<ffffffff817e8d84>] rcu_lock_acquire+0x0/0x26 stack backtrace: CPU: 2 PID: 1076 Comm: dhclient Not tainted 4.1.0-rc1+ #1007 Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 0000000000000001 ffff8800d381bac8 ffffffff81a4154f 000000003c1a3c19 ffff8800d4d0a690 ffff8800d381baf8 ffffffff810b849f ffff880117d41148 ffff880117d40000 ffff880117d40068 0000000000000156 ffff8800d381bb18 Call Trace: [<ffffffff81a4154f>] dump_stack+0x4c/0x65 [<ffffffff810b849f>] lockdep_rcu_suspicious+0x107/0x110 [<ffffffff8165a522>] ipvlan_port_get_rcu+0x47/0x4e [<ffffffff8165ad14>] ipvlan_queue_xmit+0x35/0x450 [<ffffffff817ea45d>] ? rcu_read_unlock+0x3e/0x5f [<ffffffff810a20bf>] ? local_clock+0x19/0x22 [<ffffffff810b4781>] ? __lock_is_held+0x39/0x52 [<ffffffff8165b64c>] ipvlan_start_xmit+0x1b/0x44 [<ffffffff817edf7f>] dev_hard_start_xmit+0x2ae/0x467 [<ffffffff817ee642>] __dev_queue_xmit+0x50a/0x60c [<ffffffff817ee7a7>] dev_queue_xmit_sk+0x13/0x15 [<ffffffff81997596>] dev_queue_xmit+0x10/0x12 [<ffffffff8199b41c>] packet_sendmsg+0xb6b/0xbdf [<ffffffff810b5ea7>] ? mark_lock+0x2e/0x226 [<ffffffff810a1fcc>] ? sched_clock_cpu+0x9e/0xb7 [<ffffffff817d56f9>] sock_sendmsg_nosec+0x12/0x1d [<ffffffff817d7257>] sock_sendmsg+0x29/0x2e [<ffffffff817d72cc>] sock_write_iter+0x70/0x91 [<ffffffff81199563>] __vfs_write+0x7e/0xa7 [<ffffffff811996bc>] vfs_write+0x92/0xe8 [<ffffffff811997d7>] SyS_write+0x47/0x7e [<ffffffff81a4d517>] system_call_fastpath+0x12/0x6f Fixes: 2ad7bf36 ("ipvlan: Initial check-in of the IPVLAN driver.") Cc: Mahesh Bandewar <maheshb@google.com> Signed-off-by:Mahesh Bandewar <maheshb@google.com> Acked-by:
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Konstantin Khlebnikov authored
All structures used in traffic forwarding are rcu-protected: ipvl_addr, ipvl_dev and ipvl_port. Thus we can unhash addresses without synchronization. We'll anyway hash it back into the same bucket: in worst case lockless lookup will scan hash once again. Signed-off-by:
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Konstantin Khlebnikov authored
Add missing kfree_rcu(addr, rcu); Signed-off-by:
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Konstantin Khlebnikov authored
They are unused after commit f631c44b ("ipvlan: Always set broadcast bit in multicast filter"). Signed-off-by:
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David S. Miller authored
Merge tag 'linux-can-fixes-for-4.2-20150715' of git://git.kernel.org/pub/scm/linux/kernel/git/mkl/linux-can Marc Kleine-Budde says: ==================== pull-request: can 2015-07-15 this is a pull request of 12 patches by me. This series fixes the use of the skb after netif_receive_skb() / netif_rx() which exists in several drivers. ==================== Signed-off-by:
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Eric Dumazet authored
ip6_datagram_connect() is doing a lot of socket changes without socket being locked. This looks wrong, at least for udp_lib_rehash() which could corrupt lists because of concurrent udp_sk(sk)->udp_portaddr_hash accesses. Signed-off-by:
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David S. Miller authored
Tilman Schmidt says: ==================== Fix long-standing regression in ser_gigaset ISDN driver This series fixes a serious regression in the Gigaset M101 driver introduced in kernel release 3.10 and removes some unneeded code. Please also queue up patch 1 of the series for inclusion in the stable/longterm releases 3.10 and later. ==================== Signed-off-by: -
Tilman Schmidt authored
The line discipline read and write methods are optional so the dummy methods in ser_gigaset are unnecessary and can be removed. Signed-off-by:
Tilman Schmidt <tilman@imap.cc> Signed-off-by:
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Tilman Schmidt authored
Commit 79901317 ("n_tty: Don't flush buffer when closing ldisc"), first merged in kernel release 3.10, caused the following regression in the Gigaset M101 driver: Before that commit, when closing the N_TTY line discipline in preparation to switching to N_GIGASET_M101, receive_room would be reset to a non-zero value by the call to n_tty_flush_buffer() in n_tty's close method. With the removal of that call, receive_room might be left at zero, blocking data reception on the serial line. The present patch fixes that regression by setting receive_room to an appropriate value in the ldisc open method. Fixes: 79901317 ("n_tty: Don't flush buffer when closing ldisc") Signed-off-by:
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WANG Cong authored
Fixes: 25331d6c ("net: sched: implement qstat helper routines") Cc: John Fastabend <john.fastabend@gmail.com> Signed-off-by:
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Yuchung Cheng authored
Currently F-RTO may repeatedly send new data packets on non-recurring timeouts in CA_Loss mode. This is a bug because F-RTO (RFC5682) should only be used on either new recovery or recurring timeouts. This exacerbates the recovery progress during frequent timeout & repair, because we prioritize sending new data packets instead of repairing the holes when the bandwidth is already scarce. Fix it by correcting the test of a new recovery episode. Signed-off-by:
Yuchung Cheng <ycheng@google.com> Signed-off-by:
Neal Cardwell <ncardwell@google.com> Signed-off-by:
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Nikolay Aleksandrov authored
Since the mdb add/del code was introduced there have been 2 br_mdb_notify calls when doing br_mdb_add() resulting in 2 notifications on each add. Example: Command: bridge mdb add dev br0 port eth1 grp 239.0.0.1 permanent Before patch: root@debian:~# bridge monitor all [MDB]dev br0 port eth1 grp 239.0.0.1 permanent [MDB]dev br0 port eth1 grp 239.0.0.1 permanent After patch: root@debian:~# bridge monitor all [MDB]dev br0 port eth1 grp 239.0.0.1 permanent Signed-off-by:
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Satish Ashok authored
A report with INCLUDE/Change_to_include and empty source list should be treated as a leave, specified by RFC 3376, section 3.1: "If the requested filter mode is INCLUDE *and* the requested source list is empty, then the entry corresponding to the requested interface and multicast address is deleted if present. If no such entry is present, the request is ignored." Signed-off-by:
Satish Ashok <sashok@cumulusnetworks.com> Signed-off-by:
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- 15 Jul, 2015 4 commits
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Herbert Xu authored
When we calculate the checksum on the recv path, we store the result in the skb as an optimisation in case we need the checksum again down the line. This is in fact bogus for the MSG_PEEK case as this is done without any locking. So multiple threads can peek and then store the result to the same skb, potentially resulting in bogus skb states. This patch fixes this by only storing the result if the skb is not shared. This preserves the optimisations for the few cases where it can be done safely due to locking or other reasons, e.g., SIOCINQ. Signed-off-by:
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Fabio Estevam authored
This reverts commit 6c3e921b. commit 6c3e921b ("net: fec: Ensure clocks are enabled while using mdio bus") prevents the kernel to boot on mx6 boards, so let's revert it. Reported-by:
Tyler Baker <tyler.baker@linaro.org> Signed-off-by:
Fabio Estevam <fabio.estevam@freescale.com> Signed-off-by:
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Richard Stearn authored
This may result in a kernel panic. The bug has always existed but somehow we've run out of luck now and it bites. Signed-off-by:
Richard Stearn <richard@rns-stearn.demon.co.uk> Cc: stable@vger.kernel.org # all branches Signed-off-by:
Ralf Baechle <ralf@linux-mips.org> Signed-off-by:
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Herbert Xu authored
Shared skbs must not be modified and this is crucial for broadcast and/or multicast paths where we use it as an optimisation to avoid unnecessary cloning. The function skb_recv_datagram breaks this rule by setting peeked without cloning the skb first. This causes funky races which leads to double-free. This patch fixes this by cloning the skb and replacing the skb in the list when setting skb->peeked. Fixes: a59322be ("[UDP]: Only increment counter on first peek/recv") Reported-by:
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