- 03 Mar, 2017 12 commits
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David S. Miller authored
Jakub Kicinski says: ==================== nfp: RX and XDP buffer fixes Two trivial fixes for code introduced with XDP support. First one corrects the buffer size we populate a register with. The register is designed to be used for scatter transfers which the driver (and most FWs) don't support so it's not critical. The other one for DMA direction is mostly cosmetic, DMA API doesn't seem to care today about the precise direction in sync calls. ==================== Signed-off-by:David S. Miller <davem@davemloft.net>
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Jakub Kicinski authored
dma_sync_single_for_*() takes the direction in which the buffer was mapped, not the direction of the sync. We should sync XDP buffers bidirectionally. Fixes: ecd63a02 ("nfp: add XDP support in the driver") Signed-off-by:
Jakub Kicinski <jakub.kicinski@netronome.com> Signed-off-by:
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Jakub Kicinski authored
Since commit c0f031bc ("nfp_net: use alloc_frag() and build_skb()") we are allocating buffers which have to hold both the data and skb to be created in place by build_skb(). FW should only be told about the buffer space it can DMA to, that is without the build_skb() headroom and tailroom. Note: firmware applications should validate the buffers against both MTU and free list buffer size so oversized packets would not pass through the NIC anyway. Fixes: c0f031bc ("nfp: use alloc_frag() and build_skb()") Signed-off-by:
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David S. Miller authored
Jon Mason says: ==================== net: ethernet: bgmac: bug fixes Changes in v5: * Rebased to the latest code and fixed up a compile error due to the mac_addr struct going away (found by David Miller) Changes in v4: * Added the udelays from the previous code (per David Miller) Changes in v3: * Reworked the init sequence patch to only remove the device reset if the device is actually in reset. Given that this code doesn't bear much resemblance to the original code, I'm changing the author of the patch. This was tested on NS2 SVK. Changes in v2: * Reworked the first match to make it more obvious what portions of the register were being preserved (Per Rafal Mileki) * Style change to reorder the function variables in patch 2 (per Sergei Shtylyov) Bug fixes for bgmac driver ==================== Signed-off-by: -
Hari Vyas authored
ndo_set_mac_address() passes struct sockaddr * as 2nd parameter to bgmac_set_mac_address() but code assumed u8 *. This caused two bytes chopping and the wrong mac address was configured. Signed-off-by:
Hari Vyas <hariv@broadcom.com> Signed-off-by:
Jon Mason <jon.mason@broadcom.com> Fixes: 4e209001 ("bgmac: write mac address to hardware in ndo_set_mac_address") Signed-off-by:
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Jon Mason authored
Fix a bug in the 'bgmac' driver init sequence that blind writes for init sequence where it should preserve most bits other than the ones it is deliberately manipulating. The code now checks to see if the adapter needs to be brought out of reset (where as before it was doing an IDM write to bring it out of reset regardless of whether it was in reset or not). Also, removed unnecessary usleeps (as there is already a read present to flush the IDM writes). Signed-off-by:
Zac Schroff <zschroff@broadcom.com> Signed-off-by:
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David S. Miller authored
Paul Durrant says: ==================== xen-netback: update memory leak fix to avoid BUG Commit 9a6cdf52 "xen-netback: fix memory leaks on XenBus disconnect" added missing code to fix a memory leak by calling vfree() in the appropriate place. Unfortunately subsequent commit f16f1df6 "xen-netback: protect resource cleaning on XenBus disconnect" then wrapped this call to vfree() in a spin lock, leading to a BUG due to incorrect context. Patch #1 makes the existing code more readable Patch #2 fixes the problem ==================== Signed-off-by:
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Paul Durrant authored
This leads to a BUG of the following form: [ 174.512861] switch: port 2(vif3.0) entered disabled state [ 174.522735] BUG: sleeping function called from invalid context at /home/build/linux-linus/mm/vmalloc.c:1441 [ 174.523451] in_atomic(): 1, irqs_disabled(): 0, pid: 28, name: xenwatch [ 174.524131] CPU: 1 PID: 28 Comm: xenwatch Tainted: G W 4.10.0upstream-11073-g4977ab6e-dirty #1 [ 174.524819] Hardware name: MSI MS-7680/H61M-P23 (MS-7680), BIOS V17.0 03/14/2011 [ 174.525517] Call Trace: [ 174.526217] show_stack+0x23/0x60 [ 174.526899] dump_stack+0x5b/0x88 [ 174.527562] ___might_sleep+0xde/0x130 [ 174.528208] __might_sleep+0x35/0xa0 [ 174.528840] ? _raw_spin_unlock_irqrestore+0x13/0x20 [ 174.529463] ? __wake_up+0x40/0x50 [ 174.530089] remove_vm_area+0x20/0x90 [ 174.530724] __vunmap+0x1d/0xc0 [ 174.531346] ? delete_object_full+0x13/0x20 [ 174.531973] vfree+0x40/0x80 [ 174.532594] set_backend_state+0x18a/0xa90 [ 174.533221] ? dwc_scan_descriptors+0x24d/0x430 [ 174.533850] ? kfree+0x5b/0xc0 [ 174.534476] ? xenbus_read+0x3d/0x50 [ 174.535101] ? xenbus_read+0x3d/0x50 [ 174.535718] ? xenbus_gather+0x31/0x90 [ 174.536332] ? ___might_sleep+0xf6/0x130 [ 174.536945] frontend_changed+0x6b/0xd0 [ 174.537565] xenbus_otherend_changed+0x7d/0x80 [ 174.538185] frontend_changed+0x12/0x20 [ 174.538803] xenwatch_thread+0x74/0x110 [ 174.539417] ? woken_wake_function+0x20/0x20 [ 174.540049] kthread+0xe5/0x120 [ 174.540663] ? xenbus_printf+0x50/0x50 [ 174.541278] ? __kthread_init_worker+0x40/0x40 [ 174.541898] ret_from_fork+0x21/0x2c [ 174.548635] switch: port 2(vif3.0) entered disabled state This patch defers the vfree() until after the spinlock is released. Reported-by:
Juergen Gross <jgross@suse.com> Signed-off-by:
Paul Durrant <paul.durrant@citrix.com> Signed-off-by:
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Paul Durrant authored
This patch replaces use of 'be->vif' with 'vif' and hence generally makes the function look tidier. No semantic change. Signed-off-by:
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git://git.kernel.org/pub/scm/linux/kernel/git/jkirsher/net-queueDavid S. Miller authored
Jeff Kirsher says: ==================== Intel Wired LAN Driver Updates 2017-03-02 This series contains fixes to ixgbe only. Paolo fixes the driver so that you can actually update the RSS key value via ethtool. Alex fixes an issue on architectures that have a cache line size larger than 64 Bytes, where the amount of headroom for the frame starts shrinking. To take this into account, Alex adds one small check so that we compare the max_frame to the amount of actual data we can store, so we will automatically enable 3K receive buffers as soon as the maximum frame size we can handle drops below the standard Ethernet MTU. ==================== Signed-off-by: -
Alexander Duyck authored
On architectures that have a cache line size larger than 64 Bytes we start running into issues where the amount of headroom for the frame starts shrinking. The size of skb_shared_info on a system with a 64B L1 cache line size is 320. This increases to 384 with a 128B cache line, and 512 with a 256B cache line. In addition the NET_SKB_PAD value increases as well consistent with the cache line size. As a result when we get to a 256B cache line as seen on the s390 we end up 768 bytes used by padding and shared info leaving us with only 1280 bytes to use for data storage. On architectures such as this we should default to using 3K Rx buffers out of a 8K page instead of trying to do 1.5K buffers out of a 4K page. To take all of this into account I have added one small check so that we compare the max_frame to the amount of actual data we can store. This was already occurring for igb, but I had overlooked it for ixgbe as it doesn't have strict limits for 82599 once we enable jumbo frames. By adding this check we will automatically enable 3K Rx buffers as soon as the maximum frame size we can handle drops below the standard Ethernet MTU. I also went through and fixed one small typo that I found where I had left an IGB in a variable name due to a copy/paste error. Signed-off-by:
Alexander Duyck <alexander.h.duyck@intel.com> Tested-by:
Andrew Bowers <andrewx.bowers@intel.com> Signed-off-by:
Jeff Kirsher <jeffrey.t.kirsher@intel.com>
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Paolo Abeni authored
Currently ixgbe_set_rxfh() updates the rss_key copy in the driver memory, but does not push the new value into the h/w. This commit add a new helper for the latter operation and call it in ixgbe_set_rxfh(), so that the h/w rss key value can be really updated via ethtool. Signed-off-by:
Paolo Abeni <pabeni@redhat.com> Tested-by:
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- 02 Mar, 2017 25 commits
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Anoob Soman authored
Allocation of new_hash, inside xenvif_new_hash(), always happen in softirq context, so use GFP_ATOMIC instead of GFP_KERNEL for new hash allocation. Signed-off-by:
Anoob Soman <anoob.soman@citrix.com> Signed-off-by:
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WANG Cong authored
This restores the ability of setting bond device's mtu to 9000. Fixes: 91572088 ("net: use core MTU range checking in core net infra") Reported-by: daznis@gmail.com Reported-by:
Brad Campbell <lists2009@fnarfbargle.com> Cc: Jarod Wilson <jarod@redhat.com> Signed-off-by:
Cong Wang <xiyou.wangcong@gmail.com> Signed-off-by:
Jay Vosburgh <jay.vosburgh@canonical.com> Signed-off-by:
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Dexuan Cui authored
'nvdev' is freed in rndis_filter_device_remove -> netvsc_device_remove -> free_netvsc_device, so we mustn't access it, before it's re-created in rndis_filter_device_add -> netvsc_device_add. Signed-off-by:
Dexuan Cui <decui@microsoft.com> Cc: "K. Y. Srinivasan" <kys@microsoft.com> Cc: Haiyang Zhang <haiyangz@microsoft.com> Cc: Stephen Hemminger <sthemmin@microsoft.com> Reviewed-by:
Stephen Hemminger <sthemmin@microsoft.com> Signed-off-by:
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David S. Miller authored
Merge tag 'mac80211-for-davem-2017-03-02' of git://git.kernel.org/pub/scm/linux/kernel/git/jberg/mac80211 Johannes Berg says: ==================== This contains just the average.h change in order to get it into the tree before adding new users through -next trees. ==================== Signed-off-by:
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David S. Miller authored
Merge tag 'wireless-drivers-for-davem-2017-03-02' of git://git.kernel.org/pub/scm/linux/kernel/git/kvalo/wireless-drivers Kalle Valo says: ==================== wireless-drivers fixes for 4.11 Add back a fixed version of an ath10k patch which was reverted during the merge window. ==================== Signed-off-by:
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WANG Cong authored
Like commit 1f17e2f2 ("net: ipv6: ignore null_entry on route dumps"), we need to ignore null entry in inet6_rtm_getroute() too. Return -ENETUNREACH here to sync with IPv4 behavior, as suggested by David. Fixes: a1a22c12 ("net: ipv6: Keep nexthop of multipath route on admin down") Reported-by:
Dmitry Vyukov <dvyukov@google.com> Cc: David Ahern <dsa@cumulusnetworks.com> Signed-off-by:
David Ahern <dsa@cumulusnetworks.com> Signed-off-by:
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Dmitry Torokhov authored
Even if bus is not hot-pluggable, devices can be unbound from the driver via sysfs, so we should not be using __exit annotations on remove() methods. The only exception is drivers registered with platform_driver_probe() which specifically disables sysfs bind/unbind attributes. Signed-off-by:
Dmitry Torokhov <dmitry.torokhov@gmail.com> Signed-off-by:
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Wei Wang authored
tp->fastopen_req could potentially be double freed if a malicious user does the following: 1. Enable TCP_FASTOPEN_CONNECT sockopt and do a connect() on the socket. 2. Call connect() with AF_UNSPEC to disconnect the socket. 3. Make this socket a listening socket by calling listen(). 4. Accept incoming connections and generate child sockets. All child sockets will get a copy of the pointer of fastopen_req. 5. Call close() on all sockets. fastopen_req will get freed multiple times. Fixes: 19f6d3f3 ("net/tcp-fastopen: Add new API support") Reported-by:
Andrey Konovalov <andreyknvl@google.com> Signed-off-by:
Wei Wang <weiwan@google.com> Signed-off-by:
Eric Dumazet <edumazet@google.com> Signed-off-by:
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Arnaldo Carvalho de Melo authored
When handling problems in cloning a socket with the sk_clone_locked() function we need to perform several steps that were open coded in it and its callers, so introduce a routine to avoid this duplication: sk_free_unlock_clone(). Cc: Cong Wang <xiyou.wangcong@gmail.com> Cc: Dmitry Vyukov <dvyukov@google.com> Cc: Eric Dumazet <edumazet@google.com> Cc: Gerrit Renker <gerrit@erg.abdn.ac.uk> Cc: Thomas Gleixner <tglx@linutronix.de> Link: http://lkml.kernel.org/n/net-ui6laqkotycunhtmqryl9bfx@git.kernel.orgSigned-off-by:
Arnaldo Carvalho de Melo <acme@redhat.com> Signed-off-by:
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Arnaldo Carvalho de Melo authored
The code where sk_clone() came from created a new socket and locked it, but then, on the error path didn't unlock it. This problem stayed there for a long while, till b0691c8e ("net: Unlock sock before calling sk_free()") fixed it, but unfortunately the callers of sk_clone() (now sk_clone_locked()) were not audited and the one in dccp_create_openreq_child() remained. Now in the age of the syskaller fuzzer, this was finally uncovered, as reported by Dmitry: ---- 8< ---- I've got the following report while running syzkaller fuzzer on 86292b33 ("Merge branch 'akpm' (patches from Andrew)") [ BUG: held lock freed! ] 4.10.0+ #234 Not tainted ------------------------- syz-executor6/6898 is freeing memory ffff88006286cac0-ffff88006286d3b7, with a lock still held there! (slock-AF_INET6){+.-...}, at: [<ffffffff8362c2c9>] spin_lock include/linux/spinlock.h:299 [inline] (slock-AF_INET6){+.-...}, at: [<ffffffff8362c2c9>] sk_clone_lock+0x3d9/0x12c0 net/core/sock.c:1504 5 locks held by syz-executor6/6898: #0: (sk_lock-AF_INET6){+.+.+.}, at: [<ffffffff839a34b4>] lock_sock include/net/sock.h:1460 [inline] #0: (sk_lock-AF_INET6){+.+.+.}, at: [<ffffffff839a34b4>] inet_stream_connect+0x44/0xa0 net/ipv4/af_inet.c:681 #1: (rcu_read_lock){......}, at: [<ffffffff83bc1c2a>] inet6_csk_xmit+0x12a/0x5d0 net/ipv6/inet6_connection_sock.c:126 #2: (rcu_read_lock){......}, at: [<ffffffff8369b424>] __skb_unlink include/linux/skbuff.h:1767 [inline] #2: (rcu_read_lock){......}, at: [<ffffffff8369b424>] __skb_dequeue include/linux/skbuff.h:1783 [inline] #2: (rcu_read_lock){......}, at: [<ffffffff8369b424>] process_backlog+0x264/0x730 net/core/dev.c:4835 #3: (rcu_read_lock){......}, at: [<ffffffff83aeb5c0>] ip6_input_finish+0x0/0x1700 net/ipv6/ip6_input.c:59 #4: (slock-AF_INET6){+.-...}, at: [<ffffffff8362c2c9>] spin_lock include/linux/spinlock.h:299 [inline] #4: (slock-AF_INET6){+.-...}, at: [<ffffffff8362c2c9>] sk_clone_lock+0x3d9/0x12c0 net/core/sock.c:1504 Fix it just like was done by b0691c8e ("net: Unlock sock before calling sk_free()"). Reported-by:
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git://git.open-mesh.org/linux-mergeDavid S. Miller authored
Simon Wunderlich says: ==================== Here are two batman-adv bugfixes: - fix a potential double free when fragment merges fail, by Sven Eckelmann - fix failing tranmission of the 16th (last) fragment if that exists, by Linus Lüssing ==================== Signed-off-by: -
Peter Downs authored
Fixed a brace coding style warning reported by checkpatch.pl Signed-off-by:
Peter Downs <padowns@gmail.com> Signed-off-by:
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Ganesh Goudar authored
Change t4fw_version.h to update latest firmware version number to 1.16.33.0. Signed-off-by:
Ganesh Goudar <ganeshgr@chelsio.com> Signed-off-by:
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David S. Miller authored
Tom Lendacky says: ==================== amd-xgbe: AMD XGBE driver fixes 2017-02-28 This patch series addresses some issues in the AMD XGBE driver. The following fixes are included in this driver update series: - Stop the PHY before disabling and releasing device interrupts so that MDIO requests issued by the device can be properly handled - Set the MDIO communication mode on device startup, not just device probe - Do not overwrite SFP settings when mod_absent is detected This patch series is based on net. ==================== Signed-off-by: -
Lendacky, Thomas authored
If an SFP module is not present, xgbe_phy_sfp_phy_settings() should return after applying the default settings. Currently there is no return statement and the default settings are overwritten. Signed-off-by:
Tom Lendacky <thomas.lendacky@amd.com> Signed-off-by:
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Lendacky, Thomas authored
The MDIO register mode is set when the device is probed. But when the device is brought down and then back up, the MDIO register mode has been reset. Be sure to reset the mode during device startup and only change the mode of the address specified. Signed-off-by:
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Lendacky, Thomas authored
Some configurations require the use of the hardware's MDIO support to communicate with external PHYs. The MDIO commands indicate completion through the device interrupt. When bringing down the device the interrupts were released before stopping the external PHY, resulting in MDIO command timeouts. Move the stopping of the PHY to before the releasing of the interrupts. Signed-off-by:
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Alban Bedel authored
On DT systems the driver require a clock, but the probe just print a warning and continue, leading to a crash when resetting the device. To fix this crash and properly handle probe deferals only ignore the missing clock if DT isn't used or if the clock doesn't exist. Signed-off-by:
Alban Bedel <alban.bedel@avionic-design.de> Acked-by:
Iyappan Subramanian <isubramanian@apm.com> Signed-off-by:
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WANG Cong authored
Andrey reported a NULL pointer deref bug in ipv6_route_ioctl() -> ip6_route_del() -> __ip6_del_rt_siblings() code path. This is because ip6_null_entry is returned in this path since ip6_null_entry is kinda default for a ipv6 route table root node. Quote from David Ahern: ip6_null_entry is the root of all ipv6 fib tables making it integrated into the table ... We should ignore any attempt of trying to delete it, like we do in __ip6_del_rt() path and several others. Reported-by:
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Waldemar Rymarkiewicz authored
Board Data File (BDF) is loaded upon driver boot-up procedure. The right board data file is identified, among others, by device and sybsystem ids. The problem, however, can occur when the (default) board data file cannot fulfill with the vendor requirements and it is necessary to use a different board data file. To solve the issue QCA uses SMBIOS type 0xF8 to store Board Data File Name Extension to specify the extension/variant name. The driver will take the extension suffix into consideration and will load the right (non-default) board data file if necessary. If it is unnecessary to use extension board data file, please leave the SMBIOS field blank and default configuration will be used. Example: If a default board data file for a specific board is identified by a string "bus=pci,vendor=168c,device=003e,subsystem-vendor=1028, subsystem-device=0310" then the OEM specific data file, if used, could be identified by variant suffix: "bus=pci,vendor=168c,device=003e,subsystem-vendor=1028, subsystem-device=0310,variant=DE_1AB" If board data file name extension is set but board-2.bin does not contain board data file for the variant, the driver will fallback to the default board data file not to break backward compatibility. This was first applied in commit f2593cb1 ("ath10k: Search SMBIOS for OEM board file extension") but later reverted in commit 005c3490 ("Revert "ath10k: Search SMBIOS for OEM board file extension"". This patch is now otherwise the same as commit f2593cb1 except the regression fixed. Signed-off-by:Waldemar Rymarkiewicz <ext.waldemar.rymarkiewicz@tieto.com> Signed-off-by:
Kalle Valo <kvalo@codeaurora.org>
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Johannes Berg authored
Declaring the factor is counter-intuitive, and people are prone to using small(-ish) values even when that makes no sense. Change the DECLARE_EWMA() macro to take the fractional precision, in bits, rather than a factor, and update all users. While at it, add some more documentation. Acked-by:
Johannes Berg <johannes.berg@intel.com>
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Eric Dumazet authored
Andrey reported a use-after-free in IPv6 stack. Issue here is that we free the socket while it still has skb in TX path and in some queues. It happens here because IPv6 reassembly unit messes skb->truesize, breaking skb_set_owner_w() badly. We fixed a similar issue for IPV4 in commit 8282f274 ("inet: frag: Always orphan skbs inside ip_defrag()") Acked-by:
Joe Stringer <joe@ovn.org> ================================================================== BUG: KASAN: use-after-free in sock_wfree+0x118/0x120 Read of size 8 at addr ffff880062da0060 by task a.out/4140 page:ffffea00018b6800 count:1 mapcount:0 mapping: (null) index:0x0 compound_mapcount: 0 flags: 0x100000000008100(slab|head) raw: 0100000000008100 0000000000000000 0000000000000000 0000000180130013 raw: dead000000000100 dead000000000200 ffff88006741f140 0000000000000000 page dumped because: kasan: bad access detected CPU: 0 PID: 4140 Comm: a.out Not tainted 4.10.0-rc3+ #59 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Bochs 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:15 dump_stack+0x292/0x398 lib/dump_stack.c:51 describe_address mm/kasan/report.c:262 kasan_report_error+0x121/0x560 mm/kasan/report.c:370 kasan_report mm/kasan/report.c:392 __asan_report_load8_noabort+0x3e/0x40 mm/kasan/report.c:413 sock_flag ./arch/x86/include/asm/bitops.h:324 sock_wfree+0x118/0x120 net/core/sock.c:1631 skb_release_head_state+0xfc/0x250 net/core/skbuff.c:655 skb_release_all+0x15/0x60 net/core/skbuff.c:668 __kfree_skb+0x15/0x20 net/core/skbuff.c:684 kfree_skb+0x16e/0x4e0 net/core/skbuff.c:705 inet_frag_destroy+0x121/0x290 net/ipv4/inet_fragment.c:304 inet_frag_put ./include/net/inet_frag.h:133 nf_ct_frag6_gather+0x1125/0x38b0 net/ipv6/netfilter/nf_conntrack_reasm.c:617 ipv6_defrag+0x21b/0x350 net/ipv6/netfilter/nf_defrag_ipv6_hooks.c:68 nf_hook_entry_hookfn ./include/linux/netfilter.h:102 nf_hook_slow+0xc3/0x290 net/netfilter/core.c:310 nf_hook ./include/linux/netfilter.h:212 __ip6_local_out+0x52c/0xaf0 net/ipv6/output_core.c:160 ip6_local_out+0x2d/0x170 net/ipv6/output_core.c:170 ip6_send_skb+0xa1/0x340 net/ipv6/ip6_output.c:1722 ip6_push_pending_frames+0xb3/0xe0 net/ipv6/ip6_output.c:1742 rawv6_push_pending_frames net/ipv6/raw.c:613 rawv6_sendmsg+0x2cff/0x4130 net/ipv6/raw.c:927 inet_sendmsg+0x164/0x5b0 net/ipv4/af_inet.c:744 sock_sendmsg_nosec net/socket.c:635 sock_sendmsg+0xca/0x110 net/socket.c:645 sock_write_iter+0x326/0x620 net/socket.c:848 new_sync_write fs/read_write.c:499 __vfs_write+0x483/0x760 fs/read_write.c:512 vfs_write+0x187/0x530 fs/read_write.c:560 SYSC_write fs/read_write.c:607 SyS_write+0xfb/0x230 fs/read_write.c:599 entry_SYSCALL_64_fastpath+0x1f/0xc2 arch/x86/entry/entry_64.S:203 RIP: 0033:0x7ff26e6f5b79 RSP: 002b:00007ff268e0ed98 EFLAGS: 00000206 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 00007ff268e0f9c0 RCX: 00007ff26e6f5b79 RDX: 0000000000000010 RSI: 0000000020f50fe1 RDI: 0000000000000003 RBP: 00007ff26ebc1220 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000206 R12: 0000000000000000 R13: 00007ff268e0f9c0 R14: 00007ff26efec040 R15: 0000000000000003 The buggy address belongs to the object at ffff880062da0000 which belongs to the cache RAWv6 of size 1504 The buggy address ffff880062da0060 is located 96 bytes inside of 1504-byte region [ffff880062da0000, ffff880062da05e0) Freed by task 4113: save_stack_trace+0x16/0x20 arch/x86/kernel/stacktrace.c:57 save_stack+0x43/0xd0 mm/kasan/kasan.c:502 set_track mm/kasan/kasan.c:514 kasan_slab_free+0x73/0xc0 mm/kasan/kasan.c:578 slab_free_hook mm/slub.c:1352 slab_free_freelist_hook mm/slub.c:1374 slab_free mm/slub.c:2951 kmem_cache_free+0xb2/0x2c0 mm/slub.c:2973 sk_prot_free net/core/sock.c:1377 __sk_destruct+0x49c/0x6e0 net/core/sock.c:1452 sk_destruct+0x47/0x80 net/core/sock.c:1460 __sk_free+0x57/0x230 net/core/sock.c:1468 sk_free+0x23/0x30 net/core/sock.c:1479 sock_put ./include/net/sock.h:1638 sk_common_release+0x31e/0x4e0 net/core/sock.c:2782 rawv6_close+0x54/0x80 net/ipv6/raw.c:1214 inet_release+0xed/0x1c0 net/ipv4/af_inet.c:425 inet6_release+0x50/0x70 net/ipv6/af_inet6.c:431 sock_release+0x8d/0x1e0 net/socket.c:599 sock_close+0x16/0x20 net/socket.c:1063 __fput+0x332/0x7f0 fs/file_table.c:208 ____fput+0x15/0x20 fs/file_table.c:244 task_work_run+0x19b/0x270 kernel/task_work.c:116 exit_task_work ./include/linux/task_work.h:21 do_exit+0x186b/0x2800 kernel/exit.c:839 do_group_exit+0x149/0x420 kernel/exit.c:943 SYSC_exit_group kernel/exit.c:954 SyS_exit_group+0x1d/0x20 kernel/exit.c:952 entry_SYSCALL_64_fastpath+0x1f/0xc2 arch/x86/entry/entry_64.S:203 Allocated by task 4115: save_stack_trace+0x16/0x20 arch/x86/kernel/stacktrace.c:57 save_stack+0x43/0xd0 mm/kasan/kasan.c:502 set_track mm/kasan/kasan.c:514 kasan_kmalloc+0xad/0xe0 mm/kasan/kasan.c:605 kasan_slab_alloc+0x12/0x20 mm/kasan/kasan.c:544 slab_post_alloc_hook mm/slab.h:432 slab_alloc_node mm/slub.c:2708 slab_alloc mm/slub.c:2716 kmem_cache_alloc+0x1af/0x250 mm/slub.c:2721 sk_prot_alloc+0x65/0x2a0 net/core/sock.c:1334 sk_alloc+0x105/0x1010 net/core/sock.c:1396 inet6_create+0x44d/0x1150 net/ipv6/af_inet6.c:183 __sock_create+0x4f6/0x880 net/socket.c:1199 sock_create net/socket.c:1239 SYSC_socket net/socket.c:1269 SyS_socket+0xf9/0x230 net/socket.c:1249 entry_SYSCALL_64_fastpath+0x1f/0xc2 arch/x86/entry/entry_64.S:203 Memory state around the buggy address: ffff880062d9ff00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ffff880062d9ff80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc >ffff880062da0000: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ^ ffff880062da0080: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ffff880062da0100: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ================================================================== Reported-by:
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Eric Dumazet authored
It is now very clear that silly TCP listeners might play with enabling/disabling timestamping while new children are added to their accept queue. Meaning net_enable_timestamp() can be called from BH context while current state of the static key is not enabled. Lets play safe and allow all contexts. The work queue is scheduled only under the problematic cases, which are the static key enable/disable transition, to not slow down critical paths. This extends and improves what we did in commit 5fa8bbda ("net: use a work queue to defer net_disable_timestamp() work") Fixes: b90e5794 ("net: dont call jump_label_dec from irq context") Signed-off-by:
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Alexander Potapenko authored
KMSAN (KernelMemorySanitizer, a new error detection tool) reports use of uninitialized memory in packet_bind_spkt(): Acked-by:
Alexander Potapenko <glider@google.com> Signed-off-by:
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Mike Manning authored
Even with multicast flooding turned off, IPv6 ND should still work so that IPv6 connectivity is provided. Allow this by continuing to flood multicast traffic originated by us. Fixes: b6cb5ac8 ("net: bridge: add per-port multicast flood flag") Cc: Nikolay Aleksandrov <nikolay@cumulusnetworks.com> Signed-off-by:
Mike Manning <mmanning@brocade.com> Acked-by:
Nikolay Aleksandrov <nikolay@cumulusnetworks.com> Signed-off-by:
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- 01 Mar, 2017 3 commits
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David S. Miller authored
Merge tag 'mac80211-for-davem-2017-02-28' of git://git.kernel.org/pub/scm/linux/kernel/git/jberg/mac80211 Johannes Berg says: ==================== First round of fixes - details in the commits: * use a valid hrtimer clock ID in mac80211_hwsim * don't reorder frames prior to BA session * flush a delayed work at suspend so the state is all valid before suspend/resume * fix packet statistics in fast-RX, the RX packets counter increment was simply missing * don't try to re-transmit filtered frames in an aggregation session * shorten (for tracing) a debug message * typo fix in another debug message * fix nul-termination with HWSIM_ATTR_RADIO_NAME in hwsim * fix mgmt RX processing when station is looked up by driver/device ==================== Signed-off-by:
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Eric Dumazet authored
SYN processing really was meant to be handled from BH. When I got rid of BH blocking while processing socket backlog in commit 5413d1ba ("net: do not block BH while processing socket backlog"), I forgot that a malicious user could transition to TCP_LISTEN from a state that allowed (SYN) packets to be parked in the socket backlog while socket is owned by the thread doing the listen() call. Sure enough syzkaller found this and reported the bug ;) ================================= [ INFO: inconsistent lock state ] 4.10.0+ #60 Not tainted --------------------------------- inconsistent {IN-SOFTIRQ-W} -> {SOFTIRQ-ON-W} usage. syz-executor0/5090 [HC0[0]:SC0[0]:HE1:SE1] takes: (&(&hashinfo->ehash_locks[i])->rlock){+.?...}, at: [<ffffffff83a6a370>] spin_lock include/linux/spinlock.h:299 [inline] (&(&hashinfo->ehash_locks[i])->rlock){+.?...}, at: [<ffffffff83a6a370>] inet_ehash_insert+0x240/0xad0 net/ipv4/inet_hashtables.c:407 {IN-SOFTIRQ-W} state was registered at: mark_irqflags kernel/locking/lockdep.c:2923 [inline] __lock_acquire+0xbcf/0x3270 kernel/locking/lockdep.c:3295 lock_acquire+0x241/0x580 kernel/locking/lockdep.c:3753 __raw_spin_lock include/linux/spinlock_api_smp.h:142 [inline] _raw_spin_lock+0x33/0x50 kernel/locking/spinlock.c:151 spin_lock include/linux/spinlock.h:299 [inline] inet_ehash_insert+0x240/0xad0 net/ipv4/inet_hashtables.c:407 reqsk_queue_hash_req net/ipv4/inet_connection_sock.c:753 [inline] inet_csk_reqsk_queue_hash_add+0x1b7/0x2a0 net/ipv4/inet_connection_sock.c:764 tcp_conn_request+0x25cc/0x3310 net/ipv4/tcp_input.c:6399 tcp_v4_conn_request+0x157/0x220 net/ipv4/tcp_ipv4.c:1262 tcp_rcv_state_process+0x802/0x4130 net/ipv4/tcp_input.c:5889 tcp_v4_do_rcv+0x56b/0x940 net/ipv4/tcp_ipv4.c:1433 tcp_v4_rcv+0x2e12/0x3210 net/ipv4/tcp_ipv4.c:1711 ip_local_deliver_finish+0x4ce/0xc40 net/ipv4/ip_input.c:216 NF_HOOK include/linux/netfilter.h:257 [inline] ip_local_deliver+0x1ce/0x710 net/ipv4/ip_input.c:257 dst_input include/net/dst.h:492 [inline] ip_rcv_finish+0xb1d/0x2110 net/ipv4/ip_input.c:396 NF_HOOK include/linux/netfilter.h:257 [inline] ip_rcv+0xd90/0x19c0 net/ipv4/ip_input.c:487 __netif_receive_skb_core+0x1ad1/0x3400 net/core/dev.c:4179 __netif_receive_skb+0x2a/0x170 net/core/dev.c:4217 netif_receive_skb_internal+0x1d6/0x430 net/core/dev.c:4245 napi_skb_finish net/core/dev.c:4602 [inline] napi_gro_receive+0x4e6/0x680 net/core/dev.c:4636 e1000_receive_skb drivers/net/ethernet/intel/e1000/e1000_main.c:4033 [inline] e1000_clean_rx_irq+0x5e0/0x1490 drivers/net/ethernet/intel/e1000/e1000_main.c:4489 e1000_clean+0xb9a/0x2910 drivers/net/ethernet/intel/e1000/e1000_main.c:3834 napi_poll net/core/dev.c:5171 [inline] net_rx_action+0xe70/0x1900 net/core/dev.c:5236 __do_softirq+0x2fb/0xb7d kernel/softirq.c:284 invoke_softirq kernel/softirq.c:364 [inline] irq_exit+0x19e/0x1d0 kernel/softirq.c:405 exiting_irq arch/x86/include/asm/apic.h:658 [inline] do_IRQ+0x81/0x1a0 arch/x86/kernel/irq.c:250 ret_from_intr+0x0/0x20 native_safe_halt+0x6/0x10 arch/x86/include/asm/irqflags.h:53 arch_safe_halt arch/x86/include/asm/paravirt.h:98 [inline] default_idle+0x8f/0x410 arch/x86/kernel/process.c:271 arch_cpu_idle+0xa/0x10 arch/x86/kernel/process.c:262 default_idle_call+0x36/0x60 kernel/sched/idle.c:96 cpuidle_idle_call kernel/sched/idle.c:154 [inline] do_idle+0x348/0x440 kernel/sched/idle.c:243 cpu_startup_entry+0x18/0x20 kernel/sched/idle.c:345 start_secondary+0x344/0x440 arch/x86/kernel/smpboot.c:272 verify_cpu+0x0/0xfc irq event stamp: 1741 hardirqs last enabled at (1741): [<ffffffff84d49d77>] __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:160 [inline] hardirqs last enabled at (1741): [<ffffffff84d49d77>] _raw_spin_unlock_irqrestore+0xf7/0x1a0 kernel/locking/spinlock.c:191 hardirqs last disabled at (1740): [<ffffffff84d4a732>] __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:108 [inline] hardirqs last disabled at (1740): [<ffffffff84d4a732>] _raw_spin_lock_irqsave+0xa2/0x110 kernel/locking/spinlock.c:159 softirqs last enabled at (1738): [<ffffffff84d4deff>] __do_softirq+0x7cf/0xb7d kernel/softirq.c:310 softirqs last disabled at (1571): [<ffffffff84d4b92c>] do_softirq_own_stack+0x1c/0x30 arch/x86/entry/entry_64.S:902 other info that might help us debug this: Possible unsafe locking scenario: CPU0 ---- lock(&(&hashinfo->ehash_locks[i])->rlock); <Interrupt> lock(&(&hashinfo->ehash_locks[i])->rlock); *** DEADLOCK *** 1 lock held by syz-executor0/5090: #0: (sk_lock-AF_INET6){+.+.+.}, at: [<ffffffff83406b43>] lock_sock include/net/sock.h:1460 [inline] #0: (sk_lock-AF_INET6){+.+.+.}, at: [<ffffffff83406b43>] sock_setsockopt+0x233/0x1e40 net/core/sock.c:683 stack backtrace: CPU: 1 PID: 5090 Comm: syz-executor0 Not tainted 4.10.0+ #60 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Bochs 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:15 [inline] dump_stack+0x292/0x398 lib/dump_stack.c:51 print_usage_bug+0x3ef/0x450 kernel/locking/lockdep.c:2387 valid_state kernel/locking/lockdep.c:2400 [inline] mark_lock_irq kernel/locking/lockdep.c:2602 [inline] mark_lock+0xf30/0x1410 kernel/locking/lockdep.c:3065 mark_irqflags kernel/locking/lockdep.c:2941 [inline] __lock_acquire+0x6dc/0x3270 kernel/locking/lockdep.c:3295 lock_acquire+0x241/0x580 kernel/locking/lockdep.c:3753 __raw_spin_lock include/linux/spinlock_api_smp.h:142 [inline] _raw_spin_lock+0x33/0x50 kernel/locking/spinlock.c:151 spin_lock include/linux/spinlock.h:299 [inline] inet_ehash_insert+0x240/0xad0 net/ipv4/inet_hashtables.c:407 reqsk_queue_hash_req net/ipv4/inet_connection_sock.c:753 [inline] inet_csk_reqsk_queue_hash_add+0x1b7/0x2a0 net/ipv4/inet_connection_sock.c:764 dccp_v6_conn_request+0xada/0x11b0 net/dccp/ipv6.c:380 dccp_rcv_state_process+0x51e/0x1660 net/dccp/input.c:606 dccp_v6_do_rcv+0x213/0x350 net/dccp/ipv6.c:632 sk_backlog_rcv include/net/sock.h:896 [inline] __release_sock+0x127/0x3a0 net/core/sock.c:2052 release_sock+0xa5/0x2b0 net/core/sock.c:2539 sock_setsockopt+0x60f/0x1e40 net/core/sock.c:1016 SYSC_setsockopt net/socket.c:1782 [inline] SyS_setsockopt+0x2fb/0x3a0 net/socket.c:1765 entry_SYSCALL_64_fastpath+0x1f/0xc2 RIP: 0033:0x4458b9 RSP: 002b:00007fe8b26c2b58 EFLAGS: 00000292 ORIG_RAX: 0000000000000036 RAX: ffffffffffffffda RBX: 0000000000000006 RCX: 00000000004458b9 RDX: 000000000000001a RSI: 0000000000000001 RDI: 0000000000000006 RBP: 00000000006e2110 R08: 0000000000000010 R09: 0000000000000000 R10: 00000000208c3000 R11: 0000000000000292 R12: 0000000000708000 R13: 0000000020000000 R14: 0000000000001000 R15: 0000000000000000 Fixes: 5413d1ba ("net: do not block BH while processing socket backlog") Signed-off-by:
Soheil Hassas Yeganeh <soheil@google.com> Signed-off-by:
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Gary Lin authored
Commit 07016151 ("bpf, verifier: further improve search pruning") increased the limit of processed instructions from 32k to 64k, but the comment still mentioned the 32k limit. This commit updates the comment to reflect the change. Cc: Alexei Starovoitov <ast@kernel.org> Cc: Daniel Borkmann <daniel@iogearbox.net> Signed-off-by:
Gary Lin <glin@suse.com> Acked-by:
Alexei Starovoitov <ast@kernel.org> Signed-off-by:
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