- 14 Feb, 2018 23 commits
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Boris Pismenny authored
copy_from_user could copy some partial information, as a result TLS_CRYPTO_INFO_READY(crypto_info) could be true while crypto_info is using uninitialzed data. This patch resets crypto_info when copy_from_user fails. fixes: 3c4d7559 ("tls: kernel TLS support") Signed-off-by:
Boris Pismenny <borisp@mellanox.com> Signed-off-by:
David S. Miller <davem@davemloft.net>
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Boris Pismenny authored
Current code returns four bytes of salt followed by four bytes of IV. This patch returns all eight bytes of IV. fixes: 3c4d7559 ("tls: kernel TLS support") Signed-off-by:
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David S. Miller authored
Daniel Axtens says: ==================== Updates to segmentation-offloads.txt I've been trying to wrap my head around GSO for a while now. This is a set of small changes to the docs that would probably have been helpful when I was starting out. I realise that GSO_DODGY is still a notable omission - I'm hesitant to write too much on it just yet as I don't understand it well and I think it's in the process of changing. ==================== Signed-off-by: -
Daniel Axtens authored
Most of this is extracted from 90017acc ("sctp: Add GSO support"), with some extra text about GSO_BY_FRAGS and the need to check for it. Cc: Marcelo Ricardo Leitner <marcelo.leitner@gmail.com> Signed-off-by:
Daniel Axtens <dja@axtens.net> Acked-by:
Marcelo Ricardo Leitner <marcelo.leitner@gmail.com> Signed-off-by:
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Daniel Axtens authored
The doc originally called it SKB_GSO_REMCSUM. Fix it. Fixes: f7a6272b ("Documentation: Add documentation for TSO and GSO features") Signed-off-by:
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Daniel Axtens authored
UFO is deprecated except for tuntap and packet per 0c19f846, ("net: accept UFO datagrams from tuntap and packet"). Update UFO docs to reflect this. Signed-off-by:
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David S. Miller authored
Ying Xue says: ==================== tipc: Fix missing RTNL lock protection during setting link properties At present it's unsafe to configure link properties through netlink as the entire setting process is not under RTNL lock protection. Now TIPC supports two different sets of netlink APIs at the same time, and they share the same set of backend functions to configure bearer, media and net properties. In order to solve the missing RTNL issue, we have to make the whole __tipc_nl_compat_doit() protected by RTNL, which means any function called within it cannot take RTNL any more. So in the series we first introduce the following new functions which doesn't hold RTNl lock: - __tipc_nl_bearer_disable() - __tipc_nl_bearer_enable() - __tipc_nl_bearer_set() - __tipc_nl_media_set() - __tipc_nl_net_set() Meanwhile, __tipc_nl_compat_doit() has been reconstructed to minimize the time of holding RTNL lock. Changes in v4: - Per suggestion of Kirill Tkhai, divided original big one patch into seven small ones so that they can be easily reviewed. Changes in v3: - Optimized return method of __tipc_nl_bearer_enable() regarding the comments from David M and Kirill Tkhai - Moved the allocations of memory in __tipc_nl_compat_doit() out of RTNL lock to minimize the time of holding RTNL lock according to the suggestion of Kirill Tkhai. Changes in v2: - The whole operation of setting bearer/media properties has been protected under RTNL, as per feedback from David M. ==================== Signed-off-by: -
Ying Xue authored
Currently when user changes link properties, TIPC first checks if user's command message contains media name or bearer name through tipc_media_find() or tipc_bearer_find() which is protected by RTNL lock. But when tipc_nl_compat_link_set() conducts the checking with the two functions, it doesn't hold RTNL lock at all, as a result, the following complaints were reported: audit: type=1400 audit(1514679888.244:9): avc: denied { write } for pid=3194 comm="syzkaller021477" path="socket:[11143]" dev="sockfs" ino=11143 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tclass=netlink_generic_socket permissive=1 Reviewed-by:Kirill Tkhai <ktkhai@virtuozzo.com> ============================= WARNING: suspicious RCU usage 4.15.0-rc5+ #152 Not tainted ----------------------------- net/tipc/bearer.c:177 suspicious rcu_dereference_protected() usage! other info that might help us debug this: rcu_scheduler_active = 2, debug_locks = 1 2 locks held by syzkaller021477/3194: #0: (cb_lock){++++}, at: [<00000000d20133ea>] genl_rcv+0x19/0x40 net/netlink/genetlink.c:634 #1: (genl_mutex){+.+.}, at: [<00000000fcc5d1bc>] genl_lock net/netlink/genetlink.c:33 [inline] #1: (genl_mutex){+.+.}, at: [<00000000fcc5d1bc>] genl_rcv_msg+0x115/0x140 net/netlink/genetlink.c:622 stack backtrace: CPU: 1 PID: 3194 Comm: syzkaller021477 Not tainted 4.15.0-rc5+ #152 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:17 [inline] dump_stack+0x194/0x257 lib/dump_stack.c:53 lockdep_rcu_suspicious+0x123/0x170 kernel/locking/lockdep.c:4585 tipc_bearer_find+0x2b4/0x3b0 net/tipc/bearer.c:177 tipc_nl_compat_link_set+0x329/0x9f0 net/tipc/netlink_compat.c:729 __tipc_nl_compat_doit net/tipc/netlink_compat.c:288 [inline] tipc_nl_compat_doit+0x15b/0x660 net/tipc/netlink_compat.c:335 tipc_nl_compat_handle net/tipc/netlink_compat.c:1119 [inline] tipc_nl_compat_recv+0x112f/0x18f0 net/tipc/netlink_compat.c:1201 genl_family_rcv_msg+0x7b7/0xfb0 net/netlink/genetlink.c:599 genl_rcv_msg+0xb2/0x140 net/netlink/genetlink.c:624 netlink_rcv_skb+0x21e/0x460 net/netlink/af_netlink.c:2408 genl_rcv+0x28/0x40 net/netlink/genetlink.c:635 netlink_unicast_kernel net/netlink/af_netlink.c:1275 [inline] netlink_unicast+0x4e8/0x6f0 net/netlink/af_netlink.c:1301 netlink_sendmsg+0xa4a/0xe60 net/netlink/af_netlink.c:1864 sock_sendmsg_nosec net/socket.c:636 [inline] sock_sendmsg+0xca/0x110 net/socket.c:646 sock_write_iter+0x31a/0x5d0 net/socket.c:915 call_write_iter include/linux/fs.h:1772 [inline] new_sync_write fs/read_write.c:469 [inline] __vfs_write+0x684/0x970 fs/read_write.c:482 vfs_write+0x189/0x510 fs/read_write.c:544 SYSC_write fs/read_write.c:589 [inline] SyS_write+0xef/0x220 fs/read_write.c:581 do_syscall_32_irqs_on arch/x86/entry/common.c:327 [inline] do_fast_syscall_32+0x3ee/0xf9d arch/x86/entry/common.c:389 entry_SYSENTER_compat+0x54/0x63 arch/x86/entry/entry_64_compat.S:129 In order to correct the mistake, __tipc_nl_compat_doit() has been protected by RTNL lock, which means the whole operation of setting bearer/media properties is under RTNL protection. Signed-off-by:
Ying Xue <ying.xue@windriver.com> Reported-by:
syzbot <syzbot+6345fd433db009b29413@syzkaller.appspotmail.com> Signed-off-by:
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Ying Xue authored
Introduce __tipc_nl_net_set() which doesn't hold RTNL lock. Signed-off-by:
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Ying Xue authored
Introduce __tipc_nl_media_set() which doesn't hold RTNL lock. Signed-off-by:
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Ying Xue authored
Introduce __tipc_nl_bearer_set() which doesn't holding RTNL lock. Signed-off-by:
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Ying Xue authored
Introduce __tipc_nl_bearer_enable() which doesn't hold RTNL lock. Signed-off-by:
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Ying Xue authored
Introduce __tipc_nl_bearer_disable() which doesn't hold RTNL lock. Signed-off-by:
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Ying Xue authored
As preparation for adding RTNL to make (*cmd->transcode)() and (*cmd->transcode)() constantly protected by RTNL lock, we move out of memory allocations existing between them as many as possible so that the time of holding RTNL can be minimized in __tipc_nl_compat_doit(). Signed-off-by:
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David S. Miller authored
Thomas Falcon says: ==================== ibmvnic: Fix memory leaks in the driver This patch set is pretty self-explanatory. It includes a number of patches that fix memory leaks found with kmemleak in the ibmvnic driver. ==================== Signed-off-by: -
Thomas Falcon authored
During device close or reset, there were some cases of outstanding RX socket buffers not being freed. Include a function similar to the one that already exists to clean TX socket buffers in this case. Signed-off-by:
Thomas Falcon <tlfalcon@linux.vnet.ibm.com> Signed-off-by:
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Thomas Falcon authored
If a RX buffer is returned to the client driver with an error, free the corresponding socket buffer before continuing. Signed-off-by:
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Thomas Falcon authored
This memory is allocated during initialization but never freed, so do that now. Signed-off-by:
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Thomas Falcon authored
During device bringup, the driver exchanges login buffers with firmware. These buffers contain information such number of TX and RX queues alloted to the device, RX buffer size, etc. These buffers weren't being properly freed on device reset or close. We can free the buffer we send to firmware as soon as we get a response. There is information in the response buffer that the driver needs for normal operation so retain it until the next reset or removal. Signed-off-by:
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Thomas Falcon authored
Pushes back setting the carrier on until the end of the reset code. This resolves a bug where a watchdog timer was detecting that a TX queue had stalled before the adapter reset was complete. Signed-off-by:
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Jesper Dangaard Brouer authored
This reverts commit aa136d0c. As I previously[1] pointed out this implementation of XDP_REDIRECT is wrong. XDP_REDIRECT is a facility that must work between different NIC drivers. Another NIC driver can call ndo_xdp_xmit/nicvf_xdp_xmit, but your driver patch assumes payload data (at top of page) will contain a queue index and a DMA addr, this is not true and worse will likely contain garbage. Given you have not fixed this in due time (just reached v4.16-rc1), the only option I see is a revert. [1] http://lkml.kernel.org/r/20171211130902.482513d3@redhat.com Cc: Sunil Goutham <sgoutham@cavium.com> Cc: Christina Jacob <cjacob@caviumnetworks.com> Cc: Aleksey Makarov <aleksey.makarov@cavium.com> Fixes: aa136d0c ("net: thunderx: Add support for xdp redirect") Signed-off-by:
Jesper Dangaard Brouer <brouer@redhat.com> Signed-off-by:
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Xin Long authored
This patch is to fix the file comments in stream.c and stream_interleave.c v1->v2: rephrase the comment for stream.c according to Neil's suggestion. Fixes: a8386317 ("sctp: prepare asoc stream for stream reconf") Fixes: 0c3f6f65 ("sctp: implement make_datafrag for sctp_stream_interleave") Signed-off-by:
Xin Long <lucien.xin@gmail.com> Acked-by:
Neil Horman <nhorman@tuxdriver.com> Signed-off-by:
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Jakub Kicinski authored
netif_set_real_num_tx_queues() can be called when netdev is up. That usually happens when user requests change of number of channels/rings with ethtool -L. The procedure for changing the number of queues involves resetting the qdiscs and setting dev->num_tx_queues to the new value. When the new value is lower than the old one, extra care has to be taken to ensure ordering of accesses to the number of queues vs qdisc reset. Currently the queues are reset before new dev->num_tx_queues is assigned, leaving a window of time where packets can be enqueued onto the queues going down, leading to a likely crash in the drivers, since most drivers don't check if TX skbs are assigned to an active queue. Fixes: e6484930 ("net: allocate tx queues in register_netdevice") Signed-off-by:
Jakub Kicinski <jakub.kicinski@netronome.com> Signed-off-by:
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- 13 Feb, 2018 7 commits
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Sowmini Varadhan authored
Commit ebeeb1ad ("rds: tcp: use rds_destroy_pending() to synchronize netns/module teardown and rds connection/workq management") adds an rcu read critical section to __rd_conn_create. The memory allocations in that critcal section need to use GFP_ATOMIC to avoid sleeping. This patch was verified with syzkaller reproducer. Reported-by: syzbot+a0564419941aaae3fe3c@syzkaller.appspotmail.com Fixes: ebeeb1ad ("rds: tcp: use rds_destroy_pending() to synchronize netns/module teardown and rds connection/workq management") Signed-off-by:
Sowmini Varadhan <sowmini.varadhan@oracle.com> Acked-by:
Santosh Shilimkar <santosh.shilimkar@oracle.com> Signed-off-by:
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David S. Miller authored
Jiri Pirko says: ==================== net: sched: couple of fixes This patchset contains couple of fixes following-up the shared block patchsets. ==================== Signed-off-by: -
Jiri Pirko authored
The offending commit wrongly assumes 1:1 mapping between block and q. However, there are multiple blocks for a single q for classful qdiscs. Since the obscure tc_u_common sharing mechanism expects it to be shared among a qdisc, fix it by storing q pointer in case the block is not shared. Reported-by:
Paweł Staszewski <pstaszewski@itcare.pl> Reported-by:
Cong Wang <xiyou.wangcong@gmail.com> Fixes: 7fa9d974 ("net: sched: cls_u32: use block instead of q in tc_u_common") Signed-off-by:
Jiri Pirko <jiri@mellanox.com> Signed-off-by:
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Jiri Pirko authored
It is pointless to set block->q for block which are shared among multiple qdiscs. So remove the assignment in that case. Do a bit of code reshuffle to make block->index initialized at that point so we can use tcf_block_shared() helper. Reported-by:
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Jiri Pirko authored
Since mlxsw_sp_fib_create() and mlxsw_sp_mr_table_create() use ERR_PTR macro to propagate int err through return of a pointer, the return value is not NULL in case of failure. So if one of the calls fails, one of vr->fib4, vr->fib6 or vr->mr4_table is not NULL and mlxsw_sp_vr_is_used wrongly assumes that vr is in use which leads to crash like following one: [ 1293.949291] BUG: unable to handle kernel NULL pointer dereference at 00000000000006c9 [ 1293.952729] IP: mlxsw_sp_mr_table_flush+0x15/0x70 [mlxsw_spectrum] Fix this by using local variables to hold the pointers and set vr->* only in case everything went fine. Fixes: 76610ebb ("mlxsw: spectrum_router: Refactor virtual router handling") Fixes: a3d9bc50 ("mlxsw: spectrum_router: Extend virtual routers with IPv6 support") Fixes: d42b0965 ("mlxsw: spectrum_router: Add multicast routes notification handling functionality") Signed-off-by:
Ido Schimmel <idosch@mellanox.com> Signed-off-by:
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Tobias Klauser authored
Change "minimun" to "minimum". Signed-off-by:
Tobias Klauser <tklauser@distanz.ch> Signed-off-by:
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Hauke Mehrtens authored
This fixes a compile problem of some user space applications by not including linux/libc-compat.h in uapi/if_ether.h. linux/libc-compat.h checks which "features" the header files, included from the libc, provide to make the Linux kernel uapi header files only provide no conflicting structures and enums. If a user application mixes kernel headers and libc headers it could happen that linux/libc-compat.h gets included too early where not all other libc headers are included yet. Then the linux/libc-compat.h would not prevent all the redefinitions and we run into compile problems. This patch removes the include of linux/libc-compat.h from uapi/if_ether.h to fix the recently introduced case, but not all as this is more or less impossible. It is no problem to do the check directly in the if_ether.h file and not in libc-compat.h as this does not need any fancy glibc header detection as glibc never provided struct ethhdr and should define __UAPI_DEF_ETHHDR by them self when they will provide this. The following test program did not compile correctly any more: #include <linux/if_ether.h> #include <netinet/in.h> #include <linux/in.h> int main(void) { return 0; } Fixes: 6926e041 ("uapi/if_ether.h: prevent redefinition of struct ethhdr") Reported-by:Guillaume Nault <g.nault@alphalink.fr> Cc: <stable@vger.kernel.org> # 4.15 Signed-off-by:
Hauke Mehrtens <hauke@hauke-m.de> Signed-off-by:
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- 12 Feb, 2018 10 commits
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Jan Glauber authored
Prevent a kernel panic on reboot if ptp_clock is NULL by checking the ptp pointer before using it. Signed-off-by:
Jan Glauber <jglauber@cavium.com> Fixes: 8c56df37 ("net: add support for Cavium PTP coprocessor") Cc: Radoslaw Biernacki <rad@semihalf.com> Cc: Aleksey Makarov <aleksey.makarov@cavium.com> Signed-off-by:
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Mika Westerberg authored
The control channel calls registered callbacks when control messages such as XDomain protocol messages are received. The control channel handling is done in a worker running on system workqueue which means the networking driver can't run tear down flow which includes sending disconnect request and waiting for a reply in the same worker. Otherwise reply is never received (as the work is already running) and the operation times out. To fix this run disconnect ThunderboltIP flow asynchronously once ThunderboltIP logout message is received. Fixes: e69b6c02 ("net: Add support for networking over Thunderbolt cable") Signed-off-by:
Mika Westerberg <mika.westerberg@linux.intel.com> Cc: stable@vger.kernel.org Signed-off-by:
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Mika Westerberg authored
When suspending to mem or disk the Thunderbolt controller typically goes down as well tearing down the connection automatically. However, when suspend to idle is used this does not happen so we need to make sure the connection is properly disconnected before it can be re-established during resume. Fixes: e69b6c02 ("net: Add support for networking over Thunderbolt cable") Signed-off-by:
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Geert Uytterhoeven authored
Currently, if Wake-on-LAN is enabled, the SH-ETH device's module clock is manually kept running during system suspend, to make sure the device stays active. Since commits 91c719f5 ("soc: renesas: rcar-sysc: Keep wakeup sources active during system suspend") and 744dddca ("clk: renesas: mstp: Keep wakeup sources active during system suspend"), this workaround is no longer needed. Hence remove all explicit clock handling to keep the device active. Signed-off-by:
Geert Uytterhoeven <geert+renesas@glider.be> Reviewed-by:
Niklas Söderlund <niklas.soderlund+renesas@ragnatech.se> Reviewed-by:
Sergei Shtylyov <sergei.shtylyov@cogentembedded.com> Signed-off-by:
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Geert Uytterhoeven authored
Currently, if Wake-on-LAN is enabled, the EtherAVB device's module clock is manually kept running during system suspend, to make sure the device stays active. Since commit 91c719f5 ("soc: renesas: rcar-sysc: Keep wakeup sources active during system suspend") , this workaround is no longer needed. Hence remove all explicit clock handling to keep the device active. Signed-off-by:
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Ingo van Lil authored
When forcing a specific link mode, the PHY driver must clear the existing speed and duplex bits in BMCR while preserving some other control bits. This logic was accidentally inverted with the introduction of phy_modify(). Fixes: fea23fb5 ("net: phy: convert read-modify-write to phy_modify()") Signed-off-by:
Ingo van Lil <inguin@gmx.de> Reviewed-by:
Andrew Lunn <andrew@lunn.ch> Signed-off-by:
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Ilya Lesokhin authored
Avoid SKB coalescing if eor bit is set in one of the relevant SKBs. Fixes: c134ecb8 ("tcp: Make use of MSG_EOR in tcp_sendmsg") Signed-off-by:
Ilya Lesokhin <ilyal@mellanox.com> Signed-off-by:
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Xin Long authored
Remove the 'if (chunk)' check in sctp_renege_events for idata process, as all renege commands are generated in sctp_eat_data and it can't be NULL. The same thing we already did for common data in sctp_ulpq_renege. Fixes: 94014e8d ("sctp: implement renege_events for sctp_stream_interleave") Signed-off-by:
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Xin Long authored
After the support for SCTP_CID_I_DATA and SCTP_CID_I_FWD_TSN chunks, the corresp conversion in sctp_cname should also be added. Otherwise, in some places, pr_debug will print them as "unknown chunk". Signed-off-by:
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Xin Long authored
The pr_err in sctp_hash_transport was supposed to report a sctp bug for using rhashtable/rhlist. The err '-EEXIST' introduced in Commit cd2b7087 ("sctp: check duplicate node before inserting a new transport") doesn't belong to that case. So just return -EEXIST back without pr_err any kmsg. Fixes: cd2b7087 ("sctp: check duplicate node before inserting a new transport") Reported-by:
Wei Chen <weichen@redhat.com> Signed-off-by:
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