- 18 Oct, 2017 40 commits
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David Ahern authored
Running perf in one window to capture tcp_retransmit_skb tracepoint: $ perf record -e tcp:tcp_retransmit_skb -a And causing a retransmission on an active TCP session (e.g., dropping packets in the receiver, changing MTU on the interface to 500 and back to 1500) triggers a panic: [ 58.543144] BUG: unable to handle kernel NULL pointer dereference at 0000000000000008 [ 58.545300] IP: perf_trace_tcp_retransmit_skb+0xd0/0x145 [ 58.546770] PGD 0 P4D 0 [ 58.547472] Oops: 0000 [#1] SMP [ 58.548328] Modules linked in: vrf [ 58.549262] CPU: 0 PID: 0 Comm: swapper/0 Not tainted 4.14.0-rc4+ #26 [ 58.551004] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.7.5-20140531_083030-gandalf 04/01/2014 [ 58.554560] task: ffffffff81a0e540 task.stack: ffffffff81a00000 [ 58.555817] RIP: 0010:perf_trace_tcp_retransmit_skb+0xd0/0x145 [ 58.557137] RSP: 0018:ffff88003fc03d68 EFLAGS: 00010282 [ 58.558292] RAX: 0000000000000000 RBX: ffffe8ffffc0ec80 RCX: ffff880038543098 [ 58.559850] RDX: 0400000000000000 RSI: ffff88003fc03d70 RDI: ffff88003fc14b68 [ 58.561099] RBP: ffff88003fc03da8 R08: 0000000000000000 R09: ffffea0000d3224a [ 58.562005] R10: ffff88003fc03db8 R11: 0000000000000010 R12: ffff8800385428c0 [ 58.562930] R13: ffffe8ffffc0e478 R14: ffffffff81a93a40 R15: ffff88003d4f0c00 [ 58.563845] FS: 0000000000000000(0000) GS:ffff88003fc00000(0000) knlGS:0000000000000000 [ 58.564873] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 58.565613] CR2: 0000000000000008 CR3: 000000003d68f004 CR4: 00000000000606f0 [ 58.566538] Call Trace: [ 58.566865] <IRQ> [ 58.567140] __tcp_retransmit_skb+0x4ab/0x4c6 [ 58.567704] ? tcp_set_ca_state+0x22/0x3f [ 58.568231] tcp_retransmit_skb+0x14/0xa3 [ 58.568754] tcp_retransmit_timer+0x472/0x5e3 [ 58.569324] ? tcp_write_timer_handler+0x1e9/0x1e9 [ 58.569946] tcp_write_timer_handler+0x95/0x1e9 [ 58.570548] tcp_write_timer+0x2a/0x58 Check that daddr_cache is non-NULL before de-referencing. Fixes: e086101b ("tcp: add a tracepoint for tcp retransmission") Signed-off-by:David Ahern <dsahern@gmail.com> Acked-by:
Cong Wang <xiyou.wangcong@gmail.com> Signed-off-by:
David S. Miller <davem@davemloft.net>
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Gustavo A. R. Silva authored
In preparation to enabling -Wimplicit-fallthrough, mark switch cases where we are expecting to fall through. Signed-off-by:
Gustavo A. R. Silva <garsilva@embeddedor.com> Signed-off-by:
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Gustavo A. R. Silva authored
In preparation to enabling -Wimplicit-fallthrough, mark switch cases where we are expecting to fall through. Notice that in some cases I placed the "fall through" comment on its own line, which is what GCC is expecting to find. Signed-off-by:
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David Ahern authored
The compact form for IPv6 addresses is more user friendly than the full version. For example: compact: 2001:db8:1::1 full: 2001:0db8:0001:0000:0000:0000:0000:0004i Update the tcp tracepoint to show the compact form. Signed-off-by:Alexei Starovoitov <ast@kernel.org> Signed-off-by:
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Gustavo A. R. Silva authored
In preparation to enabling -Wimplicit-fallthrough, mark switch cases where we are expecting to fall through. Notice that in some cases I placed the "fall through" comment on its own line, which is what GCC is expecting to find. Addresses-Coverity-ID: 115108 Signed-off-by:
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Gustavo A. R. Silva authored
In preparation to enabling -Wimplicit-fallthrough, mark switch cases where we are expecting to fall through. Signed-off-by:
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David S. Miller authored
Madalin Bucur says: ==================== adapt DPAA drivers for DSA Junote Cai reported that he was not able to get a DSA setup involving the DPAA/FMAN driver to work and narrowed it down to of_find_net_device_by_node() call in DSA setup. The initial attempt to fix this by adding of_node to the platform device results in a second, failed, probing of the FMan MAC driver against the new platform device created for the DPAA Ethernet driver. Solve these issues by removing the of_node pointer from the platform device and changing the net_dev dev to the of_device dev to ensure the DSA init will be able to find the DPAA net_dev using of_find_net_device_by_node(). Several changes were required to enable this solution: refactoring the adjust_link (also resulted in lesser, cleaner code) and renaming the fman kernel modules to keep the legacy udev rules happy. Changes in v2: - fix issue on error path in "dpaa_eth: change device used" patch - cleanup the dpaa_eth_probe() error paths Changes in v3: - remove obsolete comment in moved code - add explanation for module rename ==================== Signed-off-by: -
Madalin Bucur authored
Comment is no longer valid for a long time now. Signed-off-by:
Madalin Bucur <madalin.bucur@nxp.com> Signed-off-by:
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Madalin Bucur authored
This change just renames the FMan driver modules, using a common prefix for the DPAA FMan and DPAA Ethernet drivers. Besides making the names more aligned, this allows writing udev rules that match on either driver name, if needed, using the fsl_dpaa_* prefix. The change of netdev dev required for the DSA probing makes the previous rules written using this prefix fail, this change makes them work again, ensuring backwards compatibility for their users. Signed-off-by:
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Madalin Bucur authored
Signed-off-by:
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Madalin Bucur authored
Change device used for DMA mapping to the MAC device that is an of_device, with proper DMA ops. Using this device for the netdevice should also address the issue with DSA scenarios that need the netdevice to be backed by an of_device. Signed-off-by:
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Madalin Bucur authored
Signed-off-by:
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Madalin Bucur authored
The FMan MAC driver allocates a platform device for the Ethernet driver to probe on. Setting pdev->dev.of_node with the MAC node triggers the MAC driver probing of the new platform device. While this fails quickly and does not affect the functionality of the drivers, it is incorrect and must be removed. This was added to address a report that DSA code using of_find_net_device_by_node() is unable to use the DPAA interfaces. Error message seen before this fix: fsl_mac dpaa-ethernet.0: __devm_request_mem_region(mac) failed fsl_mac: probe of dpaa-ethernet.0 failed with error -16 Signed-off-by:
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Jakub Kicinski authored
Program tag is usually displayed as string of bytes without any separators (e.g. as "aa5520b1090cfeb6" vs MAC addr-like format bpftool uses currently: "aa:55:20:b1:09:0c:fe:b6"). Make bptfool use the more common format both for displaying the tag and selecting the program by tag. This was pointed out in review but I misunderstood the comment. Signed-off-by:
Jakub Kicinski <jakub.kicinski@netronome.com> Reviewed-by:
Simon Horman <simon.horman@netronome.com> Acked-by:
Daniel Borkmann <daniel@iogearbox.net> Acked-by:
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David S. Miller authored
Kees Cook says: ==================== networking: Convert timers to use timer_setup() This is the current set of outstanding networking patches to perform conversions to the new timer interface (rebased to -next). This is not all expected conversions, but it contains everything needed in networking to eliminate init_timer(), and all the non-standard setup_*_timer() uses. ==================== Signed-off-by: -
Kees Cook authored
In preparation for unconditionally passing the struct timer_list pointer to all timer callbacks, switch to using the new timer_setup() and from_timer() to pass the timer pointer explicitly. Cc: Trond Myklebust <trond.myklebust@primarydata.com> Cc: Anna Schumaker <anna.schumaker@netapp.com> Cc: "J. Bruce Fields" <bfields@fieldses.org> Cc: Jeff Layton <jlayton@poochiereds.net> Cc: "David S. Miller" <davem@davemloft.net> Cc: linux-nfs@vger.kernel.org Cc: netdev@vger.kernel.org Signed-off-by:
Kees Cook <keescook@chromium.org> Signed-off-by:
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Kees Cook authored
In preparation for unconditionally passing the struct timer_list pointer to all timer callbacks, switch to using the new timer_setup() and from_timer() to pass the timer pointer explicitly. Cc: "David S. Miller" <davem@davemloft.net> Cc: Alexey Kuznetsov <kuznet@ms2.inr.ac.ru> Cc: Hideaki YOSHIFUJI <yoshfuji@linux-ipv6.org> Cc: netdev@vger.kernel.org Signed-off-by:
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Kees Cook authored
In preparation for unconditionally passing the struct timer_list pointer to all timer callbacks, switch to using the new timer_setup() and from_timer() to pass the timer pointer explicitly. (Note that this timer is actually disabled.) Cc: Jeff Dike <jdike@addtoit.com> Cc: Richard Weinberger <richard@nod.at> Cc: "David S. Miller" <davem@davemloft.net> Cc: Jarod Wilson <jarod@redhat.com> Cc: user-mode-linux-devel@lists.sourceforge.net Cc: user-mode-linux-user@lists.sourceforge.net Signed-off-by:
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Kees Cook authored
Removes unused timer and its old initialization call. Cc: Pantelis Antoniou <pantelis.antoniou@gmail.com> Cc: Vitaly Bordug <vbordug@ru.mvista.com> Cc: linuxppc-dev@lists.ozlabs.org Cc: netdev@vger.kernel.org Signed-off-by:
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Kees Cook authored
In preparation for unconditionally passing the struct timer_list pointer to all timer callbacks, switch to using the new timer_setup() and from_timer() to pass the timer pointer explicitly. Cc: Wei Liu <wei.liu2@citrix.com> Cc: Paul Durrant <paul.durrant@citrix.com> Cc: xen-devel@lists.xenproject.org Cc: netdev@vger.kernel.org Signed-off-by:
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Kees Cook authored
In preparation for unconditionally passing the struct timer_list pointer to all timer callbacks, switch to using the new timer_setup() and from_timer() to pass the timer pointer explicitly. Also drops a redundant initialization that is already set up by DEFINE_TIMER. Cc: "David S. Miller" <davem@davemloft.net> Cc: Hans Liljestrand <ishkamiel@gmail.com> Cc: "Reshetova, Elena" <elena.reshetova@intel.com> Cc: Bhumika Goyal <bhumirks@gmail.com> Cc: Johannes Berg <johannes.berg@intel.com> Cc: Roopa Prabhu <roopa@cumulusnetworks.com> Cc: Augusto Mecking Caringi <augustocaringi@gmail.com> Cc: Jarod Wilson <jarod@redhat.com> Cc: Kalle Valo <kvalo@codeaurora.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Alexey Dobriyan <adobriyan@gmail.com> Cc: netdev@vger.kernel.org Signed-off-by:
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Kees Cook authored
In preparation for unconditionally passing the struct timer_list pointer to all timer callbacks, switch to using the new timer_setup() and from_timer() to pass the timer pointer explicitly for all users of sk_timer. Cc: "David S. Miller" <davem@davemloft.net> Cc: Ralf Baechle <ralf@linux-mips.org> Cc: Andrew Hendry <andrew.hendry@gmail.com> Cc: Eric Dumazet <edumazet@google.com> Cc: Paolo Abeni <pabeni@redhat.com> Cc: David Howells <dhowells@redhat.com> Cc: Julia Lawall <julia.lawall@lip6.fr> Cc: linzhang <xiaolou4617@gmail.com> Cc: Ingo Molnar <mingo@kernel.org> Cc: netdev@vger.kernel.org Cc: linux-hams@vger.kernel.org Cc: linux-x25@vger.kernel.org Signed-off-by:
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Kees Cook authored
In preparation for unconditionally passing the struct timer_list pointer to all timer callbacks, switch to using the new timer_setup() and from_timer() to pass the timer pointer explicitly. Switches test of .data field to .function, since .data will be going away. Cc: Jeff Kirsher <jeffrey.t.kirsher@intel.com> Cc: intel-wired-lan@lists.osuosl.org Cc: netdev@vger.kernel.org Signed-off-by:
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Kees Cook authored
In preparation for unconditionally passing the struct timer_list pointer to all timer callbacks, switch to using the new timer_setup() and from_timer() to pass the timer pointer explicitly. Switches test of .data field to .function, since .data will be going away. Cc: Yisen Zhuang <yisen.zhuang@huawei.com> Cc: Salil Mehta <salil.mehta@huawei.com> Cc: "David S. Miller" <davem@davemloft.net> Cc: lipeng <lipeng321@huawei.com> Cc: Lin Yun Sheng <linyunsheng@huawei.com> Cc: Kejian Yan <yankejian@huawei.com> Cc: Arnd Bergmann <arnd@arndb.de> Cc: netdev@vger.kernel.org Signed-off-by:
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Kees Cook authored
In preparation for unconditionally passing the struct timer_list pointer to all timer callbacks, switch to using the new timer_setup() and from_timer() to pass the timer pointer explicitly. Cc: Jon Mason <jdmason@kudzu.us> Cc: netdev@vger.kernel.org Signed-off-by:
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Kees Cook authored
In preparation for unconditionally passing the struct timer_list pointer to all timer callbacks, switch to using the new timer_setup() and from_timer() to pass the timer pointer explicitly. Cc: Woojung Huh <woojung.huh@microchip.com> Cc: Microchip Linux Driver Support <UNGLinuxDriver@microchip.com> Cc: "David S. Miller" <davem@davemloft.net> Cc: Ben Hutchings <ben@decadent.org.uk> Cc: Philippe Reynes <tremyfr@gmail.com> Cc: Jarod Wilson <jarod@redhat.com> Cc: Arvind Yadav <arvind.yadav.cs@gmail.com> Cc: "Bjørn Mork" <bjorn@mork.no> Cc: "Stefan Brüns" <stefan.bruens@rwth-aachen.de> Cc: Alexey Dobriyan <adobriyan@gmail.com> Cc: Greg Ungerer <gerg@linux-m68k.org> Cc: linux-usb@vger.kernel.org Cc: netdev@vger.kernel.org Signed-off-by:
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Kees Cook authored
In preparation for unconditionally passing the struct timer_list pointer to all timer callbacks, switch to using the new timer_setup() and from_timer() to pass the timer pointer explicitly. Cc: Ralf Baechle <ralf@linux-mips.org> Cc: linux-mips@linux-mips.org Cc: netdev@vger.kernel.org Signed-off-by:
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Kees Cook authored
In preparation for unconditionally passing the struct timer_list pointer to all timer callbacks, switch to using the new timer_setup() and from_timer() to pass the timer pointer explicitly. Cc: Joerg Reuter <jreuter@yaina.de> Cc: linux-hams@vger.kernel.org Cc: netdev@vger.kernel.org Signed-off-by:
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Kees Cook authored
In preparation for unconditionally passing the struct timer_list pointer to all timer callbacks, switch to using the new timer_setup() and from_timer() to pass the timer pointer explicitly. Cc: Russell King <linux@armlinux.org.uk> Cc: linux-arm-kernel@lists.infradead.org Cc: netdev@vger.kernel.org Signed-off-by:
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Kees Cook authored
In preparation for unconditionally passing the struct timer_list pointer to all timer callbacks, switch to using the new timer_setup() and from_timer() to pass the timer pointer explicitly. Cc: "David S. Miller" <davem@davemloft.net> Cc: Philippe Reynes <tremyfr@gmail.com> Cc: Jarod Wilson <jarod@redhat.com> Cc: Shannon Nelson <shannon.nelson@oracle.com> Cc: Rob Herring <robh@kernel.org> Cc: chris hyser <chris.hyser@oracle.com> Cc: Tushar Dave <tushar.n.dave@oracle.com> Cc: Tobias Klauser <tklauser@distanz.ch> Cc: netdev@vger.kernel.org Signed-off-by:
Shannon Nelson <shannon.nelson@oracle.com> Signed-off-by:
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Kees Cook authored
In preparation for unconditionally passing the struct timer_list pointer to all timer callbacks, switch to using the new timer_setup() and from_timer() to pass the timer pointer explicitly. Cc: "David S. Miller" <davem@davemloft.net> Cc: Johannes Berg <johannes.berg@intel.com> Cc: Jarod Wilson <jarod@redhat.com> Cc: Rob Herring <robh@kernel.org> Cc: netdev@vger.kernel.org Signed-off-by:
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Kees Cook authored
In preparation for unconditionally passing the struct timer_list pointer to all timer callbacks, switch to using the new timer_setup() and from_timer() to pass the timer pointer explicitly. Added missing initialization for rb_timer. Cc: Karsten Keil <isdn@linux-pingi.de> Cc: "David S. Miller" <davem@davemloft.net> Cc: Al Viro <viro@zeniv.linux.org.uk> Cc: Stephen Hemminger <stephen@networkplumber.org> Cc: Arnd Bergmann <arnd@arndb.de> Cc: Johannes Berg <johannes.berg@intel.com> Cc: netdev@vger.kernel.org Signed-off-by:
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Kees Cook authored
In preparation for unconditionally passing the struct timer_list pointer to all timer callbacks, switch to using the new timer_setup() and from_timer() to pass the timer pointer explicitly. Adds a static variable to hold the polled net_device. Cc: David Howells <dhowells@redhat.com> Cc: netdev@vger.kernel.org Signed-off-by:
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Kees Cook authored
The use of del_timer_sync() will make sure a timer is not rescheduled. As such, there is no need to add external signals to kill timers. In preparation for switching the timer callback argument to the timer pointer, this drops the .data argument since it doesn't serve a meaningful purpose here. Cc: David Howells <dhowells@redhat.com> Cc: netdev@vger.kernel.org Signed-off-by:
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Kees Cook authored
In preparation for unconditionally passing the struct timer_list pointer to all timer callbacks, switch to using the new timer_setup() and from_timer() to pass the timer pointer explicitly. This adds a pointer back to the net_device, and drops needless open-coded resetting of the .function and .data fields. Cc: David S. Miller <davem@davemloft.net> Cc: Krzysztof Halasa <khc@pm.waw.pl> Cc: netdev@vger.kernel.org Signed-off-by:
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Kees Cook authored
The core sk_timer initializer can provide the common .data assignment instead of it being set separately in users. Cc: "David S. Miller" <davem@davemloft.net> Cc: Ralf Baechle <ralf@linux-mips.org> Cc: Andrew Hendry <andrew.hendry@gmail.com> Cc: Eric Dumazet <edumazet@google.com> Cc: Paolo Abeni <pabeni@redhat.com> Cc: David Howells <dhowells@redhat.com> Cc: Colin Ian King <colin.king@canonical.com> Cc: Ingo Molnar <mingo@kernel.org> Cc: linzhang <xiaolou4617@gmail.com> Cc: netdev@vger.kernel.org Cc: linux-hams@vger.kernel.org Cc: linux-x25@vger.kernel.org Signed-off-by:
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Kees Cook authored
In preparation for unconditionally passing the struct timer_list pointer to all timer callbacks, switch to using the new timer_setup() and from_timer() to pass the timer pointer explicitly. Cc: Alexander Aring <alex.aring@gmail.com> Cc: Stefan Schmidt <stefan@osg.samsung.com> Cc: "David S. Miller" <davem@davemloft.net> Cc: Alexey Kuznetsov <kuznet@ms2.inr.ac.ru> Cc: Hideaki YOSHIFUJI <yoshfuji@linux-ipv6.org> Cc: Pablo Neira Ayuso <pablo@netfilter.org> Cc: Jozsef Kadlecsik <kadlec@blackhole.kfki.hu> Cc: Florian Westphal <fw@strlen.de> Cc: linux-wpan@vger.kernel.org Cc: netdev@vger.kernel.org Cc: netfilter-devel@vger.kernel.org Cc: coreteam@netfilter.org Signed-off-by:
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Kees Cook authored
In preparation for unconditionally passing the struct timer_list pointer to all timer callbacks, switch to using the new timer_setup() and from_timer() to pass the timer pointer explicitly. Cc: "David S. Miller" <davem@davemloft.net> Cc: Gerrit Renker <gerrit@erg.abdn.ac.uk> Cc: Alexey Kuznetsov <kuznet@ms2.inr.ac.ru> Cc: Hideaki YOSHIFUJI <yoshfuji@linux-ipv6.org> Cc: netdev@vger.kernel.org Cc: dccp@vger.kernel.org Signed-off-by:
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Kees Cook authored
In preparation for unconditionally passing the struct timer_list pointer to all timer callbacks, switch to using the new timer_setup() and from_timer() to pass the timer pointer explicitly. This introduces a pointer back to the struct ip_set, which is used instead of the struct timer_list .data field. Cc: Pablo Neira Ayuso <pablo@netfilter.org> Cc: Jozsef Kadlecsik <kadlec@blackhole.kfki.hu> Cc: Florian Westphal <fw@strlen.de> Cc: "David S. Miller" <davem@davemloft.net> Cc: Stephen Hemminger <stephen@networkplumber.org> Cc: simran singhal <singhalsimran0@gmail.com> Cc: Muhammad Falak R Wani <falakreyaz@gmail.com> Cc: netfilter-devel@vger.kernel.org Cc: coreteam@netfilter.org Cc: netdev@vger.kernel.org Signed-off-by:
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Kees Cook authored
In preparation for unconditionally passing the struct timer_list pointer to all timer callbacks, switch to using the new timer_setup() and from_timer() to pass the timer pointer explicitly. Add pointer back to Qdisc. Cc: Jamal Hadi Salim <jhs@mojatatu.com> Cc: Cong Wang <xiyou.wangcong@gmail.com> Cc: Jiri Pirko <jiri@resnulli.us> Cc: "David S. Miller" <davem@davemloft.net> Cc: netdev@vger.kernel.org Signed-off-by:
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