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89,072 commits

Author SHA1 Message Date
Nicolai Stange
36f4415181 libertas: make lbs_ibss_join_existing() return error code on rates overflow
[ Upstream commit 1754c4f60a ]

Commit e5e884b426 ("libertas: Fix two buffer overflows at parsing bss
descriptor") introduced a bounds check on the number of supplied rates to
lbs_ibss_join_existing() and made it to return on overflow.

However, the aforementioned commit doesn't set the return value accordingly
and thus, lbs_ibss_join_existing() would return with zero even though it
failed.

Make lbs_ibss_join_existing return -EINVAL in case the bounds check on the
number of supplied rates fails.

Fixes: e5e884b426 ("libertas: Fix two buffer overflows at parsing bss descriptor")
Signed-off-by: Nicolai Stange <nstange@suse.de>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2020-02-14 16:53:07 -05:00
Nicolai Stange
847e6a7618 libertas: don't exit from lbs_ibss_join_existing() with RCU read lock held
[ Upstream commit c7bf1fb7dd ]

Commit e5e884b426 ("libertas: Fix two buffer overflows at parsing bss
descriptor") introduced a bounds check on the number of supplied rates to
lbs_ibss_join_existing().

Unfortunately, it introduced a return path from within a RCU read side
critical section without a corresponding rcu_read_unlock(). Fix this.

Fixes: e5e884b426 ("libertas: Fix two buffer overflows at parsing bss descriptor")
Signed-off-by: Nicolai Stange <nstange@suse.de>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2020-02-14 16:53:07 -05:00
Qing Xu
fe07868104 mwifiex: Fix possible buffer overflows in mwifiex_cmd_append_vsie_tlv()
[ Upstream commit b70261a288 ]

mwifiex_cmd_append_vsie_tlv() calls memcpy() without checking
the destination size may trigger a buffer overflower,
which a local user could use to cause denial of service
or the execution of arbitrary code.
Fix it by putting the length check before calling memcpy().

Signed-off-by: Qing Xu <m1s5p6688@gmail.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2020-02-14 16:53:07 -05:00
Qing Xu
f3a6883c5a mwifiex: Fix possible buffer overflows in mwifiex_ret_wmm_get_status()
[ Upstream commit 3a9b153c55 ]

mwifiex_ret_wmm_get_status() calls memcpy() without checking the
destination size.Since the source is given from remote AP which
contains illegal wmm elements , this may trigger a heap buffer
overflow.
Fix it by putting the length check before calling memcpy().

Signed-off-by: Qing Xu <m1s5p6688@gmail.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2020-02-14 16:53:07 -05:00
Taehee Yoo
de492d4674 netdevsim: use __GFP_NOWARN to avoid memalloc warning
commit 83cf4213ba upstream.

vfnum buffer size and binary_len buffer size is received by user-space.
So, this buffer size could be too large. If so, kmalloc will internally
print a warning message.
This warning message is actually not necessary for the netdevsim module.
So, this patch adds __GFP_NOWARN.

Test commands:
    modprobe netdevsim
    echo 1 > /sys/bus/netdevsim/new_device
    echo 1000000000 > /sys/devices/netdevsim1/sriov_numvfs

Splat looks like:
[  357.847266][ T1000] WARNING: CPU: 0 PID: 1000 at mm/page_alloc.c:4738 __alloc_pages_nodemask+0x2f3/0x740
[  357.850273][ T1000] Modules linked in: netdevsim veth openvswitch nsh nf_conncount nf_nat nf_conntrack nf_defrx
[  357.852989][ T1000] CPU: 0 PID: 1000 Comm: bash Tainted: G    B             5.5.0-rc5+ #270
[  357.854334][ T1000] Hardware name: innotek GmbH VirtualBox/VirtualBox, BIOS VirtualBox 12/01/2006
[  357.855703][ T1000] RIP: 0010:__alloc_pages_nodemask+0x2f3/0x740
[  357.856669][ T1000] Code: 64 fe ff ff 65 48 8b 04 25 c0 0f 02 00 48 05 f0 12 00 00 41 be 01 00 00 00 49 89 47 0
[  357.860272][ T1000] RSP: 0018:ffff8880b7f47bd8 EFLAGS: 00010246
[  357.861009][ T1000] RAX: ffffed1016fe8f80 RBX: 1ffff11016fe8fae RCX: 0000000000000000
[  357.861843][ T1000] RDX: 0000000000000000 RSI: 0000000000000017 RDI: 0000000000000000
[  357.862661][ T1000] RBP: 0000000000040dc0 R08: 1ffff11016fe8f67 R09: dffffc0000000000
[  357.863509][ T1000] R10: ffff8880b7f47d68 R11: fffffbfff2798180 R12: 1ffff11016fe8f80
[  357.864355][ T1000] R13: 0000000000000017 R14: 0000000000000017 R15: ffff8880c2038d68
[  357.865178][ T1000] FS:  00007fd9a5b8c740(0000) GS:ffff8880d9c00000(0000) knlGS:0000000000000000
[  357.866248][ T1000] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  357.867531][ T1000] CR2: 000055ce01ba8100 CR3: 00000000b7dbe005 CR4: 00000000000606f0
[  357.868972][ T1000] Call Trace:
[  357.869423][ T1000]  ? lock_contended+0xcd0/0xcd0
[  357.870001][ T1000]  ? __alloc_pages_slowpath+0x21d0/0x21d0
[  357.870673][ T1000]  ? _kstrtoull+0x76/0x160
[  357.871148][ T1000]  ? alloc_pages_current+0xc1/0x1a0
[  357.871704][ T1000]  kmalloc_order+0x22/0x80
[  357.872184][ T1000]  kmalloc_order_trace+0x1d/0x140
[  357.872733][ T1000]  __kmalloc+0x302/0x3a0
[  357.873204][ T1000]  nsim_bus_dev_numvfs_store+0x1ab/0x260 [netdevsim]
[  357.873919][ T1000]  ? kernfs_get_active+0x12c/0x180
[  357.874459][ T1000]  ? new_device_store+0x450/0x450 [netdevsim]
[  357.875111][ T1000]  ? kernfs_get_parent+0x70/0x70
[  357.875632][ T1000]  ? sysfs_file_ops+0x160/0x160
[  357.876152][ T1000]  kernfs_fop_write+0x276/0x410
[  357.876680][ T1000]  ? __sb_start_write+0x1ba/0x2e0
[  357.877225][ T1000]  vfs_write+0x197/0x4a0
[  357.877671][ T1000]  ksys_write+0x141/0x1d0
[ ... ]

Reviewed-by: Jakub Kicinski <kuba@kernel.org>
Fixes: 7957922056 ("netdevsim: add SR-IOV functionality")
Fixes: 82c93a87bf ("netdevsim: implement couple of testing devlink health reporters")
Signed-off-by: Taehee Yoo <ap420073@gmail.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-02-14 16:53:00 -05:00
Taehee Yoo
78354bc5a7 netdevsim: fix panic in nsim_dev_take_snapshot_write()
commit 8526ad9646 upstream.

nsim_dev_take_snapshot_write() uses nsim_dev and nsim_dev->dummy_region.
So, during this function, these data shouldn't be removed.
But there is no protecting stuff in this function.

There are two similar cases.
1. reload case
reload could be called during nsim_dev_take_snapshot_write().
When reload is being executed, nsim_dev_reload_down() is called and it
calls nsim_dev_reload_destroy(). nsim_dev_reload_destroy() calls
devlink_region_destroy() to destroy nsim_dev->dummy_region.
So, during nsim_dev_take_snapshot_write(), nsim_dev->dummy_region()
would be removed.
At this point, snapshot_write() would access freed pointer.
In order to fix this case, take_snapshot file will be removed before
devlink_region_destroy().
The take_snapshot file will be re-created by ->reload_up().

2. del_device_store case
del_device_store() also could call nsim_dev_reload_destroy()
during nsim_dev_take_snapshot_write(). If so, panic would occur.
This problem is actually the same problem with the first case.
So, this problem will be fixed by the first case's solution.

Test commands:
    modprobe netdevsim
    while :
    do
        echo 1 > /sys/bus/netdevsim/new_device &
        echo 1 > /sys/bus/netdevsim/del_device &
	devlink dev reload netdevsim/netdevsim1 &
	echo 1 > /sys/kernel/debug/netdevsim/netdevsim1/take_snapshot &
    done

Splat looks like:
[   45.564513][  T975] general protection fault, probably for non-canonical address 0xdffffc000000003a: 0000 [#1] SMP DEI
[   45.566131][  T975] KASAN: null-ptr-deref in range [0x00000000000001d0-0x00000000000001d7]
[   45.566135][  T975] CPU: 1 PID: 975 Comm: bash Not tainted 5.5.0+ #322
[   45.569020][  T975] Hardware name: innotek GmbH VirtualBox/VirtualBox, BIOS VirtualBox 12/01/2006
[   45.569026][  T975] RIP: 0010:__mutex_lock+0x10a/0x14b0
[   45.570518][  T975] Code: 08 84 d2 0f 85 7f 12 00 00 44 8b 0d 10 23 65 02 45 85 c9 75 29 49 8d 7f 68 48 b8 00 00 00 0f
[   45.570522][  T975] RSP: 0018:ffff888046ccfbf0 EFLAGS: 00010206
[   45.572305][  T975] RAX: dffffc0000000000 RBX: 0000000000000000 RCX: 0000000000000000
[   45.572308][  T975] RDX: 000000000000003a RSI: ffffffffac926440 RDI: 00000000000001d0
[   45.576843][  T975] RBP: ffff888046ccfd70 R08: ffffffffab610645 R09: 0000000000000000
[   45.576847][  T975] R10: ffff888046ccfd90 R11: ffffed100d6360ad R12: 0000000000000000
[   45.578471][  T975] R13: dffffc0000000000 R14: ffffffffae1976c0 R15: 0000000000000168
[   45.578475][  T975] FS:  00007f614d6e7740(0000) GS:ffff88806c400000(0000) knlGS:0000000000000000
[   45.581492][  T975] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   45.582942][  T975] CR2: 00005618677d1cf0 CR3: 000000005fb9c002 CR4: 00000000000606e0
[   45.584543][  T975] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   45.586633][  T975] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   45.589889][  T975] Call Trace:
[   45.591445][  T975]  ? devlink_region_snapshot_create+0x55/0x4a0
[   45.601250][  T975]  ? mutex_lock_io_nested+0x1380/0x1380
[   45.602817][  T975]  ? mutex_lock_io_nested+0x1380/0x1380
[   45.603875][  T975]  ? mark_held_locks+0xa5/0xe0
[   45.604769][  T975]  ? _raw_spin_unlock_irqrestore+0x2d/0x50
[   45.606147][  T975]  ? __mutex_unlock_slowpath+0xd0/0x670
[   45.607723][  T975]  ? crng_backtrack_protect+0x80/0x80
[   45.613530][  T975]  ? wait_for_completion+0x390/0x390
[   45.615152][  T975]  ? devlink_region_snapshot_create+0x55/0x4a0
[   45.616834][  T975]  devlink_region_snapshot_create+0x55/0x4a0
[ ... ]

Fixes: 4418f862d6 ("netdevsim: implement support for devlink region and snapshots")
Signed-off-by: Taehee Yoo <ap420073@gmail.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-02-14 16:53:00 -05:00
Taehee Yoo
8c8b90a25d netdevsim: disable devlink reload when resources are being used
commit 6ab63366e1 upstream.

devlink reload destroys resources and allocates resources again.
So, when devices and ports resources are being used, devlink reload
function should not be executed. In order to avoid this race, a new
lock is added and new_port() and del_port() call devlink_reload_disable()
and devlink_reload_enable().

Thread0                      Thread1
{new/del}_port()             {new/del}_port()
devlink_reload_disable()
                             devlink_reload_disable()
devlink_reload_enable()
                             //here
                             devlink_reload_enable()

Before Thread1's devlink_reload_enable(), the devlink is already allowed
to execute reload because Thread0 allows it. devlink reload disable/enable
variable type is bool. So the above case would exist.
So, disable/enable should be executed atomically.
In order to do that, a new lock is used.

Test commands:
    modprobe netdevsim
    echo 1 > /sys/bus/netdevsim/new_device
    while :
    do
        echo 1 > /sys/devices/netdevsim1/new_port &
        echo 1 > /sys/devices/netdevsim1/del_port &
        devlink dev reload netdevsim/netdevsim1 &
    done

Splat looks like:
[   23.342145][  T932] DEBUG_LOCKS_WARN_ON(mutex_is_locked(lock))
[   23.342159][  T932] WARNING: CPU: 0 PID: 932 at kernel/locking/mutex-debug.c:103 mutex_destroy+0xc7/0xf0
[   23.344182][  T932] Modules linked in: netdevsim openvswitch nsh nf_conncount nf_nat nf_conntrack nf_defrag_ipv6 nf_dx
[   23.346485][  T932] CPU: 0 PID: 932 Comm: devlink Not tainted 5.5.0+ #322
[   23.347696][  T932] Hardware name: innotek GmbH VirtualBox/VirtualBox, BIOS VirtualBox 12/01/2006
[   23.348893][  T932] RIP: 0010:mutex_destroy+0xc7/0xf0
[   23.349505][  T932] Code: e0 07 83 c0 03 38 d0 7c 04 84 d2 75 2e 8b 05 00 ac b0 02 85 c0 75 8b 48 c7 c6 00 5e 07 96 40
[   23.351887][  T932] RSP: 0018:ffff88806208f810 EFLAGS: 00010286
[   23.353963][  T932] RAX: dffffc0000000008 RBX: ffff888067f6f2c0 RCX: ffffffff942c4bd4
[   23.355222][  T932] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffff96dac5b4
[   23.356169][  T932] RBP: ffff888067f6f000 R08: fffffbfff2d235a5 R09: fffffbfff2d235a5
[   23.357160][  T932] R10: 0000000000000001 R11: fffffbfff2d235a4 R12: ffff888067f6f208
[   23.358288][  T932] R13: ffff88806208fa70 R14: ffff888067f6f000 R15: ffff888069ce3800
[   23.359307][  T932] FS:  00007fe2a3876740(0000) GS:ffff88806c000000(0000) knlGS:0000000000000000
[   23.360473][  T932] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   23.361319][  T932] CR2: 00005561357aa000 CR3: 000000005227a006 CR4: 00000000000606f0
[   23.362323][  T932] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   23.363417][  T932] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   23.364414][  T932] Call Trace:
[   23.364828][  T932]  nsim_dev_reload_destroy+0x77/0xb0 [netdevsim]
[   23.365655][  T932]  nsim_dev_reload_down+0x84/0xb0 [netdevsim]
[   23.366433][  T932]  devlink_reload+0xb1/0x350
[   23.367010][  T932]  genl_rcv_msg+0x580/0xe90

[ ...]

[   23.531729][ T1305] kernel BUG at lib/list_debug.c:53!
[   23.532523][ T1305] invalid opcode: 0000 [#1] SMP DEBUG_PAGEALLOC KASAN PTI
[   23.533467][ T1305] CPU: 2 PID: 1305 Comm: bash Tainted: G        W         5.5.0+ #322
[   23.534962][ T1305] Hardware name: innotek GmbH VirtualBox/VirtualBox, BIOS VirtualBox 12/01/2006
[   23.536503][ T1305] RIP: 0010:__list_del_entry_valid+0xe6/0x150
[   23.538346][ T1305] Code: 89 ea 48 c7 c7 00 73 1e 96 e8 df f7 4c ff 0f 0b 48 c7 c7 60 73 1e 96 e8 d1 f7 4c ff 0f 0b 44
[   23.541068][ T1305] RSP: 0018:ffff888047c27b58 EFLAGS: 00010282
[   23.542001][ T1305] RAX: 0000000000000054 RBX: ffff888067f6f318 RCX: 0000000000000000
[   23.543051][ T1305] RDX: 0000000000000054 RSI: 0000000000000008 RDI: ffffed1008f84f61
[   23.544072][ T1305] RBP: ffff88804aa0fca0 R08: ffffed100d940539 R09: ffffed100d940539
[   23.545085][ T1305] R10: 0000000000000001 R11: ffffed100d940538 R12: ffff888047c27cb0
[   23.546422][ T1305] R13: ffff88806208b840 R14: ffffffff981976c0 R15: ffff888067f6f2c0
[   23.547406][ T1305] FS:  00007f76c0431740(0000) GS:ffff88806c800000(0000) knlGS:0000000000000000
[   23.548527][ T1305] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   23.549389][ T1305] CR2: 00007f5048f1a2f8 CR3: 000000004b310006 CR4: 00000000000606e0
[   23.550636][ T1305] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   23.551578][ T1305] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   23.552597][ T1305] Call Trace:
[   23.553004][ T1305]  mutex_remove_waiter+0x101/0x520
[   23.553646][ T1305]  __mutex_lock+0xac7/0x14b0
[   23.554218][ T1305]  ? nsim_dev_port_del+0x4e/0x140 [netdevsim]
[   23.554908][ T1305]  ? mutex_lock_io_nested+0x1380/0x1380
[   23.555570][ T1305]  ? _parse_integer+0xf0/0xf0
[   23.556043][ T1305]  ? kstrtouint+0x86/0x110
[   23.556504][ T1305]  ? nsim_dev_port_del+0x4e/0x140 [netdevsim]
[   23.557133][ T1305]  nsim_dev_port_del+0x4e/0x140 [netdevsim]
[   23.558024][ T1305]  del_port_store+0xcc/0xf0 [netdevsim]
[ ... ]

Fixes: 75ba029f3c ("netdevsim: implement proper devlink reload")
Signed-off-by: Taehee Yoo <ap420073@gmail.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-02-14 16:53:00 -05:00
Taehee Yoo
c83d7f2add netdevsim: fix using uninitialized resources
commit f5cd21605e upstream.

When module is being initialized, __init() calls bus_register() and
driver_register().
These functions internally create various resources and sysfs files.
The sysfs files are used for basic operations(add/del device).
/sys/bus/netdevsim/new_device
/sys/bus/netdevsim/del_device

These sysfs files use netdevsim resources, they are mostly allocated
and initialized in ->probe() function, which is nsim_dev_probe().
But, sysfs files could be executed before ->probe() is finished.
So, accessing uninitialized data would occur.

Another problem is very similar.
/sys/bus/netdevsim/new_device internally creates sysfs files.
/sys/devices/netdevsim<id>/new_port
/sys/devices/netdevsim<id>/del_port

These sysfs files also use netdevsim resources, they are mostly allocated
and initialized in creating device routine, which is nsim_bus_dev_new().
But they also could be executed before nsim_bus_dev_new() is finished.
So, accessing uninitialized data would occur.

To fix these problems, this patch adds flags, which means whether the
operation is finished or not.
The flag variable 'nsim_bus_enable' means whether netdevsim bus was
initialized or not.
This is protected by nsim_bus_dev_list_lock.
The flag variable 'nsim_bus_dev->init' means whether nsim_bus_dev was
initialized or not.
This could be used in {new/del}_port_store() with no lock.

Test commands:
    #SHELL1
    modprobe netdevsim
    while :
    do
        echo "1 1" > /sys/bus/netdevsim/new_device
        echo "1 1" > /sys/bus/netdevsim/del_device
    done

    #SHELL2
    while :
    do
        echo 1 > /sys/devices/netdevsim1/new_port
        echo 1 > /sys/devices/netdevsim1/del_port
    done

Splat looks like:
[   47.508954][ T1008] general protection fault, probably for non-canonical address 0xdffffc0000000021: 0000 I
[   47.510793][ T1008] KASAN: null-ptr-deref in range [0x0000000000000108-0x000000000000010f]
[   47.511963][ T1008] CPU: 2 PID: 1008 Comm: bash Not tainted 5.5.0+ #322
[   47.512823][ T1008] Hardware name: innotek GmbH VirtualBox/VirtualBox, BIOS VirtualBox 12/01/2006
[   47.514041][ T1008] RIP: 0010:__mutex_lock+0x10a/0x14b0
[   47.514699][ T1008] Code: 08 84 d2 0f 85 7f 12 00 00 44 8b 0d 10 23 65 02 45 85 c9 75 29 49 8d 7f 68 48 b8 00 00 00 0f
[   47.517163][ T1008] RSP: 0018:ffff888059b4fbb0 EFLAGS: 00010206
[   47.517802][ T1008] RAX: dffffc0000000000 RBX: 0000000000000000 RCX: 0000000000000000
[   47.518941][ T1008] RDX: 0000000000000021 RSI: ffffffff85926440 RDI: 0000000000000108
[   47.519732][ T1008] RBP: ffff888059b4fd30 R08: ffffffffc073fad0 R09: 0000000000000000
[   47.520729][ T1008] R10: ffff888059b4fd50 R11: ffff88804bb38040 R12: 0000000000000000
[   47.521702][ T1008] R13: dffffc0000000000 R14: ffffffff871976c0 R15: 00000000000000a0
[   47.522760][ T1008] FS:  00007fd4be05a740(0000) GS:ffff88806c800000(0000) knlGS:0000000000000000
[   47.523877][ T1008] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   47.524627][ T1008] CR2: 0000561c82b69cf0 CR3: 0000000065dd6004 CR4: 00000000000606e0
[   47.527662][ T1008] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   47.528604][ T1008] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   47.529531][ T1008] Call Trace:
[   47.529874][ T1008]  ? nsim_dev_port_add+0x50/0x150 [netdevsim]
[   47.530470][ T1008]  ? mutex_lock_io_nested+0x1380/0x1380
[   47.531018][ T1008]  ? _kstrtoull+0x76/0x160
[   47.531449][ T1008]  ? _parse_integer+0xf0/0xf0
[   47.531874][ T1008]  ? kernfs_fop_write+0x1cf/0x410
[   47.532330][ T1008]  ? sysfs_file_ops+0x160/0x160
[   47.532773][ T1008]  ? kstrtouint+0x86/0x110
[   47.533168][ T1008]  ? nsim_dev_port_add+0x50/0x150 [netdevsim]
[   47.533721][ T1008]  nsim_dev_port_add+0x50/0x150 [netdevsim]
[   47.534336][ T1008]  ? sysfs_file_ops+0x160/0x160
[   47.534858][ T1008]  new_port_store+0x99/0xb0 [netdevsim]
[   47.535439][ T1008]  ? del_port_store+0xb0/0xb0 [netdevsim]
[   47.536035][ T1008]  ? sysfs_file_ops+0x112/0x160
[   47.536544][ T1008]  ? sysfs_kf_write+0x3b/0x180
[   47.537029][ T1008]  kernfs_fop_write+0x276/0x410
[   47.537548][ T1008]  ? __sb_start_write+0x215/0x2e0
[   47.538110][ T1008]  vfs_write+0x197/0x4a0
[ ... ]

Fixes: f9d9db47d3 ("netdevsim: add bus attributes to add new and delete devices")
Fixes: 794b2c05ca ("netdevsim: extend device attrs to support port addition and deletion")
Signed-off-by: Taehee Yoo <ap420073@gmail.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-02-14 16:53:00 -05:00
Lorenzo Bianconi
89ff861a95 mt76: mt7615: fix max_nss in mt7615_eeprom_parse_hw_cap
commit d08f3010f4 upstream.

Fix u8 cast reading max_nss from MT_TOP_STRAP_STA register in
mt7615_eeprom_parse_hw_cap routine

Fixes: acf5457fd9 ("mt76: mt7615: read {tx,rx} mask from eeprom")
Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-02-14 16:53:00 -05:00
Emmanuel Grumbach
3fe076d022 iwlwifi: mvm: fix TDLS discovery with the new firmware API
commit b5b878e36c upstream.

I changed the API for asking for a session protection but
I omitted the TDLS flows. Fix that now.
Note that for the TDLS flow, we need to block until the
session protection actually starts, so add this option
to iwl_mvm_schedule_session_protection.
This patch fixes a firmware assert in the TDLS flow since
the old TIME_EVENT_CMD is not supported anymore by newer
firwmare versions.

Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Fixes: fe959c7b20 ("iwlwifi: mvm: use the new session protection command")
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-02-14 16:52:58 -05:00
Avraham Stern
fef27e78e1 iwlwifi: mvm: avoid use after free for pmsr request
commit cc4255eff5 upstream.

When a FTM request is aborted, the driver sends the abort command to
the fw and waits for a response. When the response arrives, the driver
calls cfg80211_pmsr_complete() for that request.
However, cfg80211 frees the requested data immediately after sending
the abort command, so this may lead to use after free.

Fix it by clearing the request data in the driver when the abort
command arrives and ignoring the fw notification that will come
afterwards.

Signed-off-by: Avraham Stern <avraham.stern@intel.com>
Fixes: fc36ffda32 ("iwlwifi: mvm: support FTM initiator")
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-02-14 16:52:58 -05:00
Bryan O'Donoghue
74b4660d14 ath10k: pci: Only dump ATH10K_MEM_REGION_TYPE_IOREG when safe
commit d239380196 upstream.

ath10k_pci_dump_memory_reg() will try to access memory of type
ATH10K_MEM_REGION_TYPE_IOREG however, if a hardware restart is in progress
this can crash a system.

Individual ioread32() time has been observed to jump from 15-20 ticks to >
80k ticks followed by a secure-watchdog bite and a system reset.

Work around this corner case by only issuing the read transaction when the
driver state is ATH10K_STATE_ON.

Tested-on: QCA9988 PCI 10.4-3.9.0.2-00044

Fixes: 219cc084c6 ("ath10k: add memory dump support QCA9984")
Signed-off-by: Bryan O'Donoghue <bryan.odonoghue@linaro.org>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-02-14 16:52:57 -05:00
Tariq Toukan
36549c863f net/mlx5e: TX, Error completion is for last WQE in batch
[ Upstream commit b57e66ad42 ]

For a cyclic work queue, when not requesting a completion per WQE,
a single CQE might indicate the completion of several WQEs.
However, in case some WQE in the batch causes an error, then an error
completion is issued, breaking the batch, and pointing to the offending
WQE in the wqe_counter field.

Hence, WQE-specific error CQE handling (like printing, breaking, etc...)
should be performed only for the last WQE in batch.

Fixes: 130c7b46c9 ("net/mlx5e: TX, Dump WQs wqe descriptors on CQE with error events")
Fixes: fd9b4be800 ("net/mlx5e: RX, Support multiple outstanding UMR posts")
Signed-off-by: Tariq Toukan <tariqt@mellanox.com>
Reviewed-by: Aya Levin <ayal@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-02-11 04:37:27 -08:00
Heiner Kallweit
1cb84bea75 r8169: fix performance regression related to PCIe max read request size
[ Upstream commit 21b5f672fb ]

It turned out that on low performance systems the original change can
cause lower tx performance. On a N3450-based mini-PC tx performance
in iperf3 was reduced from 950Mbps to ~900Mbps. Therefore effectively
revert the original change, just use pcie_set_readrq() now instead of
changing the PCIe capability register directly.

Fixes: 2df49d3654 ("r8169: remove fiddling with the PCIe max read request size")
Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-02-11 04:37:27 -08:00
Tariq Toukan
e24b21a5c3 net/mlx5: Deprecate usage of generic TLS HW capability bit
[ Upstream commit 61c00cca41 ]

Deprecate the generic TLS cap bit, use the new TX-specific
TLS cap bit instead.

Fixes: a12ff35e0f ("net/mlx5: Introduce TLS TX offload hardware bits and structures")
Signed-off-by: Tariq Toukan <tariqt@mellanox.com>
Reviewed-by: Eran Ben Elisha <eranbe@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-02-11 04:37:26 -08:00
Maor Gottlieb
3afd6c5458 net/mlx5: Fix deadlock in fs_core
[ Upstream commit c1948390d7 ]

free_match_list could be called when the flow table is already
locked. We need to pass this notation to tree_put_node.

It fixes the following lockdep warnning:

[ 1797.268537] ============================================
[ 1797.276837] WARNING: possible recursive locking detected
[ 1797.285101] 5.5.0-rc5+ #10 Not tainted
[ 1797.291641] --------------------------------------------
[ 1797.299917] handler10/9296 is trying to acquire lock:
[ 1797.307885] ffff889ad399a0a0 (&node->lock){++++}, at:
tree_put_node+0x1d5/0x210 [mlx5_core]
[ 1797.319694]
[ 1797.319694] but task is already holding lock:
[ 1797.330904] ffff889ad399a0a0 (&node->lock){++++}, at:
nested_down_write_ref_node.part.33+0x1a/0x60 [mlx5_core]
[ 1797.344707]
[ 1797.344707] other info that might help us debug this:
[ 1797.356952]  Possible unsafe locking scenario:
[ 1797.356952]
[ 1797.368333]        CPU0
[ 1797.373357]        ----
[ 1797.378364]   lock(&node->lock);
[ 1797.384222]   lock(&node->lock);
[ 1797.390031]
[ 1797.390031]  *** DEADLOCK ***
[ 1797.390031]
[ 1797.403003]  May be due to missing lock nesting notation
[ 1797.403003]
[ 1797.414691] 3 locks held by handler10/9296:
[ 1797.421465]  #0: ffff889cf2c5a110 (&block->cb_lock){++++}, at:
tc_setup_cb_add+0x70/0x250
[ 1797.432810]  #1: ffff88a030081490 (&comp->sem){++++}, at:
mlx5_devcom_get_peer_data+0x4c/0xb0 [mlx5_core]
[ 1797.445829]  #2: ffff889ad399a0a0 (&node->lock){++++}, at:
nested_down_write_ref_node.part.33+0x1a/0x60 [mlx5_core]
[ 1797.459913]
[ 1797.459913] stack backtrace:
[ 1797.469436] CPU: 1 PID: 9296 Comm: handler10 Kdump: loaded Not
tainted 5.5.0-rc5+ #10
[ 1797.480643] Hardware name: Dell Inc. PowerEdge R730/072T6D, BIOS
2.4.3 01/17/2017
[ 1797.491480] Call Trace:
[ 1797.496701]  dump_stack+0x96/0xe0
[ 1797.502864]  __lock_acquire.cold.63+0xf8/0x212
[ 1797.510301]  ? lockdep_hardirqs_on+0x250/0x250
[ 1797.517701]  ? mark_held_locks+0x55/0xa0
[ 1797.524547]  ? quarantine_put+0xb7/0x160
[ 1797.531422]  ? lockdep_hardirqs_on+0x17d/0x250
[ 1797.538913]  lock_acquire+0xd6/0x1f0
[ 1797.545529]  ? tree_put_node+0x1d5/0x210 [mlx5_core]
[ 1797.553701]  down_write+0x94/0x140
[ 1797.560206]  ? tree_put_node+0x1d5/0x210 [mlx5_core]
[ 1797.568464]  ? down_write_killable_nested+0x170/0x170
[ 1797.576925]  ? del_hw_flow_group+0xde/0x1f0 [mlx5_core]
[ 1797.585629]  tree_put_node+0x1d5/0x210 [mlx5_core]
[ 1797.593891]  ? free_match_list.part.25+0x147/0x170 [mlx5_core]
[ 1797.603389]  free_match_list.part.25+0xe0/0x170 [mlx5_core]
[ 1797.612654]  _mlx5_add_flow_rules+0x17e2/0x20b0 [mlx5_core]
[ 1797.621838]  ? lock_acquire+0xd6/0x1f0
[ 1797.629028]  ? esw_get_prio_table+0xb0/0x3e0 [mlx5_core]
[ 1797.637981]  ? alloc_insert_flow_group+0x420/0x420 [mlx5_core]
[ 1797.647459]  ? try_to_wake_up+0x4c7/0xc70
[ 1797.654881]  ? lock_downgrade+0x350/0x350
[ 1797.662271]  ? __mutex_unlock_slowpath+0xb1/0x3f0
[ 1797.670396]  ? find_held_lock+0xac/0xd0
[ 1797.677540]  ? mlx5_add_flow_rules+0xdc/0x360 [mlx5_core]
[ 1797.686467]  mlx5_add_flow_rules+0xdc/0x360 [mlx5_core]
[ 1797.695134]  ? _mlx5_add_flow_rules+0x20b0/0x20b0 [mlx5_core]
[ 1797.704270]  ? irq_exit+0xa5/0x170
[ 1797.710764]  ? retint_kernel+0x10/0x10
[ 1797.717698]  ? mlx5_eswitch_set_rule_source_port.isra.9+0x122/0x230
[mlx5_core]
[ 1797.728708]  mlx5_eswitch_add_offloaded_rule+0x465/0x6d0 [mlx5_core]
[ 1797.738713]  ? mlx5_eswitch_get_prio_range+0x30/0x30 [mlx5_core]
[ 1797.748384]  ? mlx5_fc_stats_work+0x670/0x670 [mlx5_core]
[ 1797.757400]  mlx5e_tc_offload_fdb_rules.isra.27+0x24/0x90 [mlx5_core]
[ 1797.767665]  mlx5e_tc_add_fdb_flow+0xaf8/0xd40 [mlx5_core]
[ 1797.776886]  ? mlx5e_encap_put+0xd0/0xd0 [mlx5_core]
[ 1797.785562]  ? mlx5e_alloc_flow.isra.43+0x18c/0x1c0 [mlx5_core]
[ 1797.795353]  __mlx5e_add_fdb_flow+0x2e2/0x440 [mlx5_core]
[ 1797.804558]  ? mlx5e_tc_update_neigh_used_value+0x8c0/0x8c0
[mlx5_core]
[ 1797.815093]  ? wait_for_completion+0x260/0x260
[ 1797.823272]  mlx5e_configure_flower+0xe94/0x1620 [mlx5_core]
[ 1797.832792]  ? __mlx5e_add_fdb_flow+0x440/0x440 [mlx5_core]
[ 1797.842096]  ? down_read+0x11a/0x2e0
[ 1797.849090]  ? down_write+0x140/0x140
[ 1797.856142]  ? mlx5e_rep_indr_setup_block_cb+0xc0/0xc0 [mlx5_core]
[ 1797.866027]  tc_setup_cb_add+0x11a/0x250
[ 1797.873339]  fl_hw_replace_filter+0x25e/0x320 [cls_flower]
[ 1797.882385]  ? fl_hw_destroy_filter+0x1c0/0x1c0 [cls_flower]
[ 1797.891607]  fl_change+0x1d54/0x1fb6 [cls_flower]
[ 1797.899772]  ? __rhashtable_insert_fast.constprop.50+0x9f0/0x9f0
[cls_flower]
[ 1797.910728]  ? lock_downgrade+0x350/0x350
[ 1797.918187]  ? __radix_tree_lookup+0xa5/0x130
[ 1797.926046]  ? fl_set_key+0x1590/0x1590 [cls_flower]
[ 1797.934611]  ? __rhashtable_insert_fast.constprop.50+0x9f0/0x9f0
[cls_flower]
[ 1797.945673]  tc_new_tfilter+0xcd1/0x1240
[ 1797.953138]  ? tc_del_tfilter+0xb10/0xb10
[ 1797.960688]  ? avc_has_perm_noaudit+0x92/0x320
[ 1797.968721]  ? avc_has_perm_noaudit+0x1df/0x320
[ 1797.976816]  ? avc_has_extended_perms+0x990/0x990
[ 1797.985090]  ? mark_lock+0xaa/0x9e0
[ 1797.991988]  ? match_held_lock+0x1b/0x240
[ 1797.999457]  ? match_held_lock+0x1b/0x240
[ 1798.006859]  ? find_held_lock+0xac/0xd0
[ 1798.014045]  ? symbol_put_addr+0x40/0x40
[ 1798.021317]  ? rcu_read_lock_sched_held+0xd0/0xd0
[ 1798.029460]  ? tc_del_tfilter+0xb10/0xb10
[ 1798.036810]  rtnetlink_rcv_msg+0x4d5/0x620
[ 1798.044236]  ? rtnl_bridge_getlink+0x460/0x460
[ 1798.052034]  ? lockdep_hardirqs_on+0x250/0x250
[ 1798.059837]  ? match_held_lock+0x1b/0x240
[ 1798.067146]  ? find_held_lock+0xac/0xd0
[ 1798.074246]  netlink_rcv_skb+0xc6/0x1f0
[ 1798.081339]  ? rtnl_bridge_getlink+0x460/0x460
[ 1798.089104]  ? netlink_ack+0x440/0x440
[ 1798.096061]  netlink_unicast+0x2d4/0x3b0
[ 1798.103189]  ? netlink_attachskb+0x3f0/0x3f0
[ 1798.110724]  ? _copy_from_iter_full+0xda/0x370
[ 1798.118415]  netlink_sendmsg+0x3ba/0x6a0
[ 1798.125478]  ? netlink_unicast+0x3b0/0x3b0
[ 1798.132705]  ? netlink_unicast+0x3b0/0x3b0
[ 1798.139880]  sock_sendmsg+0x94/0xa0
[ 1798.146332]  ____sys_sendmsg+0x36c/0x3f0
[ 1798.153251]  ? copy_msghdr_from_user+0x165/0x230
[ 1798.160941]  ? kernel_sendmsg+0x30/0x30
[ 1798.167738]  ___sys_sendmsg+0xeb/0x150
[ 1798.174411]  ? sendmsg_copy_msghdr+0x30/0x30
[ 1798.181649]  ? lock_downgrade+0x350/0x350
[ 1798.188559]  ? rcu_read_lock_sched_held+0xd0/0xd0
[ 1798.196239]  ? __fget+0x21d/0x320
[ 1798.202335]  ? do_dup2+0x2a0/0x2a0
[ 1798.208499]  ? lock_downgrade+0x350/0x350
[ 1798.215366]  ? __fget_light+0xd6/0xf0
[ 1798.221808]  ? syscall_trace_enter+0x369/0x5d0
[ 1798.229112]  __sys_sendmsg+0xd3/0x160
[ 1798.235511]  ? __sys_sendmsg_sock+0x60/0x60
[ 1798.242478]  ? syscall_trace_enter+0x233/0x5d0
[ 1798.249721]  ? syscall_slow_exit_work+0x280/0x280
[ 1798.257211]  ? do_syscall_64+0x1e/0x2e0
[ 1798.263680]  do_syscall_64+0x72/0x2e0
[ 1798.269950]  entry_SYSCALL_64_after_hwframe+0x49/0xbe

Fixes: bd71b08ec2 ("net/mlx5: Support multiple updates of steering rules in parallel")
Signed-off-by: Maor Gottlieb <maorg@mellanox.com>
Signed-off-by: Alaa Hleihel <alaa@mellanox.com>
Reviewed-by: Mark Bloch <markb@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-02-11 04:37:26 -08:00
Sudarsana Reddy Kalluru
fa77d95c72 qed: Fix timestamping issue for L2 unicast ptp packets.
[ Upstream commit 0202d293c2 ]

commit cedeac9df4 ("qed: Add support for Timestamping the unicast
PTP packets.") handles the timestamping of L4 ptp packets only.
This patch adds driver changes to detect/timestamp both L2/L4 unicast
PTP packets.

Fixes: cedeac9df4 ("qed: Add support for Timestamping the unicast PTP packets.")
Signed-off-by: Sudarsana Reddy Kalluru <skalluru@marvell.com>
Signed-off-by: Ariel Elior <aelior@marvell.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-02-11 04:37:26 -08:00
Voon Weifeng
ae011f53d0 net: stmmac: update pci platform data to use phy_interface
[ Upstream commit 909c1dde67 ]

The recent patch to support passive mode converter did not take care the
phy interface configuration in PCI platform data. Hence, converting all
the PCI platform data from plat->interface to plat->phy_interface as the
default mode is meant for PHY.

Fixes: 0060c87833 ("net: stmmac: implement support for passive mode converters via dt")
Signed-off-by: Voon Weifeng <weifeng.voon@intel.com>
Tested-by: Tan, Tee Min <tee.min.tan@intel.com>
Signed-off-by: Ong Boon Leong <boon.leong.ong@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-02-11 04:37:25 -08:00
Tan, Tee Min
db6092e309 net: stmmac: xgmac: fix missing IFF_MULTICAST checki in dwxgmac2_set_filter
[ Upstream commit 2f633d5820 ]

Without checking for IFF_MULTICAST flag, it is wrong to assume multicast
filtering is always enabled. By checking against IFF_MULTICAST, now
the driver behaves correctly when the multicast support is toggled by below
command:-
  ip link set <devname> multicast off|on

Fixes: 0efedbf11f ("net: stmmac: xgmac: Fix XGMAC selftests")
Signed-off-by: Tan, Tee Min <tee.min.tan@intel.com>
Signed-off-by: Ong Boon Leong <boon.leong.ong@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-02-11 04:37:25 -08:00
Verma, Aashish
0e0da07ac7 net: stmmac: fix missing IFF_MULTICAST check in dwmac4_set_filter
[ Upstream commit 2ba31cd937 ]

Without checking for IFF_MULTICAST flag, it is wrong to assume multicast
filtering is always enabled. By checking against IFF_MULTICAST, now
the driver behaves correctly when the multicast support is toggled by below
command:-
  ip link set <devname> multicast off|on

Fixes: 477286b53f ("stmmac: add GMAC4 core support")
Signed-off-by: Verma, Aashish <aashishx.verma@intel.com>
Tested-by: Tan, Tee Min <tee.min.tan@intel.com>
Signed-off-by: Ong Boon Leong <boon.leong.ong@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-02-11 04:37:24 -08:00
Ong Boon Leong
05a7364037 net: stmmac: xgmac: fix incorrect XGMAC_VLAN_TAG register writting
[ Upstream commit 907a076881 ]

We should always do a read of current value of XGMAC_VLAN_TAG instead of
directly overwriting the register value.

Fixes: 3cd1cfcba2 ("net: stmmac: Implement VLAN Hash Filtering in XGMAC")
Signed-off-by: Ong Boon Leong <boon.leong.ong@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-02-11 04:37:24 -08:00
Tan, Tee Min
8393d7c15f net: stmmac: fix incorrect GMAC_VLAN_TAG register writting in GMAC4+
[ Upstream commit 9eeeb3c9de ]

It should always do a read of current value of GMAC_VLAN_TAG instead of
directly overwriting the register value.

Fixes: c1be0022df ("net: stmmac: Add VLAN HASH filtering support in GMAC4+")
Signed-off-by: Tan, Tee Min <tee.min.tan@intel.com>
Signed-off-by: Ong Boon Leong <boon.leong.ong@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-02-11 04:37:24 -08:00
Harini Katakam
61093070c2 net: macb: Limit maximum GEM TX length in TSO
[ Upstream commit f822e9c4ff ]

GEM_MAX_TX_LEN currently resolves to 0x3FF8 for any IP version supporting
TSO with full 14bits of length field in payload descriptor. But an IP
errata causes false amba_error (bit 6 of ISR) when length in payload
descriptors is specified above 16387. The error occurs because the DMA
falsely concludes that there is not enough space in SRAM for incoming
payload. These errors were observed continuously under stress of large
packets using iperf on a version where SRAM was 16K for each queue. This
errata will be documented shortly and affects all versions since TSO
functionality was added. Hence limit the max length to 0x3FC0 (rounded).

Signed-off-by: Harini Katakam <harini.katakam@xilinx.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-02-11 04:37:24 -08:00
Harini Katakam
cb6a4e44c5 net: macb: Remove unnecessary alignment check for TSO
[ Upstream commit 41c1ef978c ]

The IP TSO implementation does NOT require the length to be a
multiple of 8. That is only a requirement for UFO as per IP
documentation. Hence, exit macb_features_check function in the
beginning if the protocol is not UDP. Only when it is UDP,
proceed further to the alignment checks. Update comments to
reflect the same. Also remove dead code checking for protocol
TCP when calculating header length.

Fixes: 1629dd4f76 ("cadence: Add LSO support.")
Signed-off-by: Harini Katakam <harini.katakam@xilinx.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-02-11 04:37:24 -08:00
Raed Salem
c2ea8d2b1c net/mlx5: IPsec, fix memory leak at mlx5_fpga_ipsec_delete_sa_ctx
[ Upstream commit 08db2cf577 ]

SA context is allocated at mlx5_fpga_ipsec_create_sa_ctx,
however the counterpart mlx5_fpga_ipsec_delete_sa_ctx function
nullifies sa_ctx pointer without freeing the memory allocated,
hence the memory leak.

Fix by free SA context when the SA is released.

Fixes: d6c4f0298c ("net/mlx5: Refactor accel IPSec code")
Signed-off-by: Raed Salem <raeds@mellanox.com>
Reviewed-by: Boris Pismenny <borisp@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-02-11 04:37:24 -08:00
Raed Salem
d8905a75ca net/mlx5: IPsec, Fix esp modify function attribute
[ Upstream commit 0dc2c534f1 ]

The function mlx5_fpga_esp_validate_xfrm_attrs is wrongly used
with negative negation as zero value indicates success but it
used as failure return value instead.

Fix by remove the unary not negation operator.

Fixes: 05564d0ae0 ("net/mlx5: Add flow-steering commands for FPGA IPSec implementation")
Signed-off-by: Raed Salem <raeds@mellanox.com>
Reviewed-by: Boris Pismenny <borisp@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-02-11 04:37:23 -08:00
Florian Fainelli
ae00cd94c1 net: systemport: Avoid RBUF stuck in Wake-on-LAN mode
[ Upstream commit 263a425a48 ]

After a number of suspend and resume cycles, it is possible for the RBUF
to be stuck in Wake-on-LAN mode, despite the MPD enable bit being
cleared which instructed the RBUF to exit that mode.

Avoid creating that problematic condition by clearing the RX_EN and
TX_EN bits in the UniMAC prior to disable the Magic Packet Detector
logic which is guaranteed to make the RBUF exit Wake-on-LAN mode.

Fixes: 83e82f4c70 ("net: systemport: add Wake-on-LAN support")
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-02-11 04:37:23 -08:00
Dejin Zheng
cbb1016717 net: stmmac: fix a possible endless loop
[ Upstream commit 7d10f0774f ]

It forgot to reduce the value of the variable retry in a while loop
in the ethqos_configure() function. It may cause an endless loop and
without timeout.

Fixes: a7c30e62d4 ("net: stmmac: Add driver for Qualcomm ethqos")
Signed-off-by: Dejin Zheng <zhengdejin5@gmail.com>
Acked-by: Vinod Koul <vkoul@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-02-11 04:37:23 -08:00
Lorenzo Bianconi
bf5b46cbbe net: mvneta: move rx_dropped and rx_errors in per-cpu stats
[ Upstream commit c35947b8ff ]

Move rx_dropped and rx_errors counters in mvneta_pcpu_stats in order to
avoid possible races updating statistics

Fixes: 562e2f467e ("net: mvneta: Improve the buffer allocation method for SWBM")
Fixes: dc35a10f68 ("net: mvneta: bm: add support for hardware buffer management")
Fixes: c5aff18204 ("net: mvneta: driver for Marvell Armada 370/XP network unit")
Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-02-11 04:37:23 -08:00
Razvan Stefanescu
7abc42275b net: dsa: microchip: enable module autoprobe
[ Upstream commit f8c2afa66d ]

This matches /sys/devices/.../spi1.0/modalias content.

Fixes: 9b2d9f05cd ("net: dsa: microchip: add ksz9567 to ksz9477 driver")
Fixes: d9033ae95c ("net: dsa: microchip: add KSZ8563 compatibility string")
Fixes: 8c29bebb1f ("net: dsa: microchip: add KSZ9893 switch support")
Fixes: 4531681837 ("net: dsa: add support for ksz9897 ethernet switch")
Fixes: b987e98e50 ("dsa: add DSA switch driver for Microchip KSZ9477")
Signed-off-by: Razvan Stefanescu <razvan.stefanescu@microchip.com>
Signed-off-by: Codrin Ciubotariu <codrin.ciubotariu@microchip.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-02-11 04:37:23 -08:00
Florian Fainelli
9f999a192a net: dsa: bcm_sf2: Only 7278 supports 2Gb/sec IMP port
[ Upstream commit de34d7084e ]

The 7445 switch clocking profiles do not allow us to run the IMP port at
2Gb/sec in a way that it is reliable and consistent. Make sure that the
setting is only applied to the 7278 family.

Fixes: 8f1880cbe8 ("net: dsa: bcm_sf2: Configure IMP port for 2Gb/sec")
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-02-11 04:37:23 -08:00
Florian Fainelli
ee42939772 net: dsa: b53: Always use dev->vlan_enabled in b53_configure_vlan()
[ Upstream commit df373702bc ]

b53_configure_vlan() is called by the bcm_sf2 driver upon setup and
indirectly through resume as well. During the initial setup, we are
guaranteed that dev->vlan_enabled is false, so there is no change in
behavior, however during suspend, we may have enabled VLANs before, so we
do want to restore that setting.

Fixes: dad8d7c645 ("net: dsa: b53: Properly account for VLAN filtering")
Fixes: 967dd82ffc ("net: dsa: b53: Add support for Broadcom RoboSwitch")
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-02-11 04:37:22 -08:00
Madalin Bucur
0bf33c5448 dpaa_eth: support all modes with rate adapting PHYs
[ Upstream commit 73a21fa817 ]

Stop removing modes that are not supported on the system interface
when the connected PHY is capable of rate adaptation. This addresses
an issue with the LS1046ARDB board 10G interface no longer working
with an 1G link partner after autonegotiation support was added
for the Aquantia PHY on board in

commit 09c4c57f7b ("net: phy: aquantia: add support for auto-negotiation configuration")

Before this commit the values advertised by the PHY were not
influenced by the dpaa_eth driver removal of system-side unsupported
modes as the aqr_config_aneg() was basically a no-op. After this
commit, the modes removed by the dpaa_eth driver were no longer
advertised thus autonegotiation with 1G link partners failed.

Reported-by: Mian Yousaf Kaukab <ykaukab@suse.de>
Signed-off-by: Madalin Bucur <madalin.bucur@oss.nxp.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-02-11 04:37:22 -08:00
Eric Dumazet
a1c04cca42 bonding/alb: properly access headers in bond_alb_xmit()
[ Upstream commit 38f88c4540 ]

syzbot managed to send an IPX packet through bond_alb_xmit()
and af_packet and triggered a use-after-free.

First, bond_alb_xmit() was using ipx_hdr() helper to reach
the IPX header, but ipx_hdr() was using the transport offset
instead of the network offset. In the particular syzbot
report transport offset was 0xFFFF

This patch removes ipx_hdr() since it was only (mis)used from bonding.

Then we need to make sure IPv4/IPv6/IPX headers are pulled
in skb->head before dereferencing anything.

BUG: KASAN: use-after-free in bond_alb_xmit+0x153a/0x1590 drivers/net/bonding/bond_alb.c:1452
Read of size 2 at addr ffff8801ce56dfff by task syz-executor.2/18108
 (if (ipx_hdr(skb)->ipx_checksum != IPX_NO_CHECKSUM) ...)

Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 [<ffffffff8441fc42>] __dump_stack lib/dump_stack.c:17 [inline]
 [<ffffffff8441fc42>] dump_stack+0x14d/0x20b lib/dump_stack.c:53
 [<ffffffff81a7dec4>] print_address_description+0x6f/0x20b mm/kasan/report.c:282
 [<ffffffff81a7e0ec>] kasan_report_error mm/kasan/report.c:380 [inline]
 [<ffffffff81a7e0ec>] kasan_report mm/kasan/report.c:438 [inline]
 [<ffffffff81a7e0ec>] kasan_report.cold+0x8c/0x2a0 mm/kasan/report.c:422
 [<ffffffff81a7dc4f>] __asan_report_load_n_noabort+0xf/0x20 mm/kasan/report.c:469
 [<ffffffff82c8c00a>] bond_alb_xmit+0x153a/0x1590 drivers/net/bonding/bond_alb.c:1452
 [<ffffffff82c60c74>] __bond_start_xmit drivers/net/bonding/bond_main.c:4199 [inline]
 [<ffffffff82c60c74>] bond_start_xmit+0x4f4/0x1570 drivers/net/bonding/bond_main.c:4224
 [<ffffffff83baa558>] __netdev_start_xmit include/linux/netdevice.h:4525 [inline]
 [<ffffffff83baa558>] netdev_start_xmit include/linux/netdevice.h:4539 [inline]
 [<ffffffff83baa558>] xmit_one net/core/dev.c:3611 [inline]
 [<ffffffff83baa558>] dev_hard_start_xmit+0x168/0x910 net/core/dev.c:3627
 [<ffffffff83bacf35>] __dev_queue_xmit+0x1f55/0x33b0 net/core/dev.c:4238
 [<ffffffff83bae3a8>] dev_queue_xmit+0x18/0x20 net/core/dev.c:4278
 [<ffffffff84339189>] packet_snd net/packet/af_packet.c:3226 [inline]
 [<ffffffff84339189>] packet_sendmsg+0x4919/0x70b0 net/packet/af_packet.c:3252
 [<ffffffff83b1ac0c>] sock_sendmsg_nosec net/socket.c:673 [inline]
 [<ffffffff83b1ac0c>] sock_sendmsg+0x12c/0x160 net/socket.c:684
 [<ffffffff83b1f5a2>] __sys_sendto+0x262/0x380 net/socket.c:1996
 [<ffffffff83b1f700>] SYSC_sendto net/socket.c:2008 [inline]
 [<ffffffff83b1f700>] SyS_sendto+0x40/0x60 net/socket.c:2004

Fixes: 1da177e4c3 ("Linux-2.6.12-rc2")
Signed-off-by: Eric Dumazet <edumazet@google.com>
Reported-by: syzbot <syzkaller@googlegroups.com>
Cc: Jay Vosburgh <j.vosburgh@gmail.com>
Cc: Veaceslav Falico <vfalico@gmail.com>
Cc: Andy Gospodarek <andy@greyhouse.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-02-11 04:37:22 -08:00
Nathan Chancellor
af4601fa29 net: tulip: Adjust indentation in {dmfe, uli526x}_init_module
commit fe06bf3d83 upstream.

Clang warns:

../drivers/net/ethernet/dec/tulip/uli526x.c:1812:3: warning: misleading
indentation; statement is not part of the previous 'if'
[-Wmisleading-indentation]
        switch (mode) {
        ^
../drivers/net/ethernet/dec/tulip/uli526x.c:1809:2: note: previous
statement is here
        if (cr6set)
        ^
1 warning generated.

../drivers/net/ethernet/dec/tulip/dmfe.c:2217:3: warning: misleading
indentation; statement is not part of the previous 'if'
[-Wmisleading-indentation]
        switch(mode) {
        ^
../drivers/net/ethernet/dec/tulip/dmfe.c:2214:2: note: previous
statement is here
        if (cr6set)
        ^
1 warning generated.

This warning occurs because there is a space before the tab on these
lines. Remove them so that the indentation is consistent with the Linux
kernel coding style and clang no longer warns.

While we are here, adjust the default block in dmfe_init_module to have
a proper break between the label and assignment and add a space between
the switch and opening parentheses to avoid a checkpatch warning.

Fixes: e1c3e50140 ("[PATCH] initialisation cleanup for ULI526x-net-driver")
Link: https://github.com/ClangBuiltLinux/linux/issues/795
Signed-off-by: Nathan Chancellor <natechancellor@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-02-11 04:37:19 -08:00
Nathan Chancellor
dce8b5f899 net: smc911x: Adjust indentation in smc911x_phy_configure
commit 5c61e22300 upstream.

Clang warns:

../drivers/net/ethernet/smsc/smc911x.c:939:3: warning: misleading
indentation; statement is not part of the previous 'if'
[-Wmisleading-indentation]
         if (!lp->ctl_rfduplx)
         ^
../drivers/net/ethernet/smsc/smc911x.c:936:2: note: previous statement
is here
        if (lp->ctl_rspeed != 100)
        ^
1 warning generated.

This warning occurs because there is a space after the tab on this line.
Remove it so that the indentation is consistent with the Linux kernel
coding style and clang no longer warns.

Fixes: 0a0c72c911 ("[PATCH] RE: [PATCH 1/1] net driver: Add support for SMSC LAN911x line of ethernet chips")
Link: https://github.com/ClangBuiltLinux/linux/issues/796
Signed-off-by: Nathan Chancellor <natechancellor@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-02-11 04:37:19 -08:00
Nathan Chancellor
9b95a46fd4 ppp: Adjust indentation into ppp_async_input
commit 08cbc75f96 upstream.

Clang warns:

../drivers/net/ppp/ppp_async.c:877:6: warning: misleading indentation;
statement is not part of the previous 'if' [-Wmisleading-indentation]
                                ap->rpkt = skb;
                                ^
../drivers/net/ppp/ppp_async.c:875:5: note: previous statement is here
                                if (!skb)
                                ^
1 warning generated.

This warning occurs because there is a space before the tab on this
line. Clean up this entire block's indentation so that it is consistent
with the Linux kernel coding style and clang no longer warns.

Fixes: 6722e78c90 ("[PPP]: handle misaligned accesses")
Link: https://github.com/ClangBuiltLinux/linux/issues/800
Signed-off-by: Nathan Chancellor <natechancellor@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-02-11 04:37:19 -08:00
Brian Norris
dc714706d4 mwifiex: fix unbalanced locking in mwifiex_process_country_ie()
commit 65b1aae0d9 upstream.

We called rcu_read_lock(), so we need to call rcu_read_unlock() before
we return.

Fixes: 3d94a4a837 ("mwifiex: fix possible heap overflow in mwifiex_process_country_ie()")
Cc: stable@vger.kernel.org
Cc: huangwen <huangwenabc@gmail.com>
Cc: Ganapathi Bhat <ganapathi.bhat@nxp.com>
Signed-off-by: Brian Norris <briannorris@chromium.org>
Acked-by: Ganapathi Bhat <ganapathi.bhat@nxp.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-02-11 04:37:04 -08:00
Luca Coelho
0b981befd1 iwlwifi: don't throw error when trying to remove IGTK
commit 197288d5ba upstream.

The IGTK keys are only removed by mac80211 after it has already
removed the AP station.  This causes the driver to throw an error
because mac80211 is trying to remove the IGTK when the station doesn't
exist anymore.

The firmware is aware that the station has been removed and can deal
with it the next time we try to add an IGTK for a station, so we
shouldn't try to remove the key if the station ID is
IWL_MVM_INVALID_STA.  Do this by removing the check for mvm_sta before
calling iwl_mvm_send_sta_igtk() and check return from that function
gracefully if the station ID is invalid.

Cc: stable@vger.kernel.org # 4.12+
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-02-11 04:37:04 -08:00
Navid Emamdoost
c663742088 brcmfmac: Fix memory leak in brcmf_usbdev_qinit
commit 4282dc057d upstream.

In the implementation of brcmf_usbdev_qinit() the allocated memory for
reqs is leaking if usb_alloc_urb() fails. Release reqs in the error
handling path.

Fixes: 71bb244ba2 ("brcm80211: fmac: add USB support for bcm43235/6/8 chipsets")
Signed-off-by: Navid Emamdoost <navid.emamdoost@gmail.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-02-11 04:36:40 -08:00
Vasundhara Volam
f5f751756e bnxt_en: Fix logic that disables Bus Master during firmware reset.
[ Upstream commit d407302895 ]

The current logic that calls pci_disable_device() in __bnxt_close_nic()
during firmware reset is flawed.  If firmware is still alive, we're
disabling the device too early, causing some firmware commands to
not reach the firmware.

Fix it by moving the logic to bnxt_reset_close().  If firmware is
in fatal condition, we call pci_disable_device() before we free
any of the rings to prevent DMA corruption of the freed rings.  If
firmware is still alive, we call pci_disable_device() after the
last firmware message has been sent.

Fixes: 3bc7d4a352 ("bnxt_en: Add BNXT_STATE_IN_FW_RESET state.")
Signed-off-by: Vasundhara Volam <vasundhara-v.volam@broadcom.com>
Signed-off-by: Michael Chan <michael.chan@broadcom.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-02-11 04:36:38 -08:00
Taehee Yoo
a788185674 netdevsim: fix stack-out-of-bounds in nsim_dev_debugfs_init()
[ Upstream commit 6fb8852b12 ]

When netdevsim dev is being created, a debugfs directory is created.
The variable "dev_ddir_name" is 16bytes device name pointer and device
name is "netdevsim<dev id>".
The maximum dev id length is 10.
So, 16bytes for device name isn't enough.

Test commands:
    modprobe netdevsim
    echo "1000000000 0" > /sys/bus/netdevsim/new_device

Splat looks like:
[  249.622710][  T900] BUG: KASAN: stack-out-of-bounds in number+0x824/0x880
[  249.623658][  T900] Write of size 1 at addr ffff88804c527988 by task bash/900
[  249.624521][  T900]
[  249.624830][  T900] CPU: 1 PID: 900 Comm: bash Not tainted 5.5.0+ #322
[  249.625691][  T900] Hardware name: innotek GmbH VirtualBox/VirtualBox, BIOS VirtualBox 12/01/2006
[  249.626712][  T900] Call Trace:
[  249.627103][  T900]  dump_stack+0x96/0xdb
[  249.627639][  T900]  ? number+0x824/0x880
[  249.628173][  T900]  print_address_description.constprop.5+0x1be/0x360
[  249.629022][  T900]  ? number+0x824/0x880
[  249.629569][  T900]  ? number+0x824/0x880
[  249.630105][  T900]  __kasan_report+0x12a/0x170
[  249.630717][  T900]  ? number+0x824/0x880
[  249.631201][  T900]  kasan_report+0xe/0x20
[  249.631723][  T900]  number+0x824/0x880
[  249.632235][  T900]  ? put_dec+0xa0/0xa0
[  249.632716][  T900]  ? rcu_read_lock_sched_held+0x90/0xc0
[  249.633392][  T900]  vsnprintf+0x63c/0x10b0
[  249.633983][  T900]  ? pointer+0x5b0/0x5b0
[  249.634543][  T900]  ? mark_lock+0x11d/0xc40
[  249.635200][  T900]  sprintf+0x9b/0xd0
[  249.635750][  T900]  ? scnprintf+0xe0/0xe0
[  249.636370][  T900]  nsim_dev_probe+0x63c/0xbf0 [netdevsim]
[ ... ]

Reviewed-by: Jakub Kicinski <kuba@kernel.org>
Fixes: ab1d0cc004 ("netdevsim: change debugfs tree topology")
Signed-off-by: Taehee Yoo <ap420073@gmail.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-02-11 04:36:38 -08:00
Shannon Nelson
d68522bb42 ionic: fix rxq comp packet type mask
[ Upstream commit b5ce31b5e1 ]

Be sure to include all the packet type bits in the mask.

Fixes: fbfb803153 ("ionic: Add hardware init and device commands")
Signed-off-by: Shannon Nelson <snelson@pensando.io>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-02-11 04:36:38 -08:00
Michael Chan
2806757291 bnxt_en: Fix RDMA driver failure with SRIOV after firmware reset.
[ Upstream commit 12de2eadf8 ]

bnxt_ulp_start() needs to be called before SRIOV is re-enabled after
firmware reset.  Re-enabling SRIOV may consume all the resources and
may cause the RDMA driver to fail to get MSIX and other resources.
Fix it by calling bnxt_ulp_start() first before calling
bnxt_reenable_sriov().

We re-arrange the logic so that we call bnxt_ulp_start() and
bnxt_reenable_sriov() in proper sequence in bnxt_fw_reset_task() and
bnxt_open().  The former is the normal coordinated firmware reset sequence
and the latter is firmware reset while the function is down.  This new
logic is now more straight forward and will now fix both scenarios.

Fixes: f3a6d206c2 ("bnxt_en: Call bnxt_ulp_stop()/bnxt_ulp_start() during error recovery.")
Reported-by: Vasundhara Volam <vasundhara-v.volam@broadcom.com>
Signed-off-by: Michael Chan <michael.chan@broadcom.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-02-11 04:36:37 -08:00
Michael Walle
b1462a0e88 net: phy: at803x: disable vddio regulator
[ Upstream commit 2318ca8aef ]

The probe() might enable a VDDIO regulator, which needs to be disabled
again before calling regulator_put(). Add a remove() function.

Fixes: 2f664823a4 ("net: phy: at803x: add device tree binding")
Signed-off-by: Michael Walle <michael@walle.cc>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-02-11 04:36:37 -08:00
Michael Chan
cc2726df02 bnxt_en: Refactor logic to re-enable SRIOV after firmware reset detected.
[ Upstream commit c16d4ee0e3 ]

Put the current logic in bnxt_open() to re-enable SRIOV after detecting
firmware reset into a new function bnxt_reenable_sriov().  This call
needs to be invoked in the firmware reset path also in the next patch.

Signed-off-by: Michael Chan <michael.chan@broadcom.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-02-11 04:36:37 -08:00
Nicolin Chen
67c154911f net: stmmac: Delete txtimer in suspend()
[ Upstream commit 14b41a2959 ]

When running v5.5 with a rootfs on NFS, memory abort may happen in
the system resume stage:
 Unable to handle kernel paging request at virtual address dead00000000012a
 [dead00000000012a] address between user and kernel address ranges
 pc : run_timer_softirq+0x334/0x3d8
 lr : run_timer_softirq+0x244/0x3d8
 x1 : ffff800011cafe80 x0 : dead000000000122
 Call trace:
  run_timer_softirq+0x334/0x3d8
  efi_header_end+0x114/0x234
  irq_exit+0xd0/0xd8
  __handle_domain_irq+0x60/0xb0
  gic_handle_irq+0x58/0xa8
  el1_irq+0xb8/0x180
  arch_cpu_idle+0x10/0x18
  do_idle+0x1d8/0x2b0
  cpu_startup_entry+0x24/0x40
  secondary_start_kernel+0x1b4/0x208
 Code: f9000693 a9400660 f9000020 b4000040 (f9000401)
 ---[ end trace bb83ceeb4c482071 ]---
 Kernel panic - not syncing: Fatal exception in interrupt
 SMP: stopping secondary CPUs
 SMP: failed to stop secondary CPUs 2-3
 Kernel Offset: disabled
 CPU features: 0x00002,2300aa30
 Memory Limit: none
 ---[ end Kernel panic - not syncing: Fatal exception in interrupt ]---

It's found that stmmac_xmit() and stmmac_resume() sometimes might
run concurrently, possibly resulting in a race condition between
mod_timer() and setup_timer(), being called by stmmac_xmit() and
stmmac_resume() respectively.

Since the resume() runs setup_timer() every time, it'd be safer to
have del_timer_sync() in the suspend() as the counterpart.

Signed-off-by: Nicolin Chen <nicoleotsuka@gmail.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-02-11 04:36:36 -08:00
Michael Chan
200c918d12 bnxt_en: Fix TC queue mapping.
[ Upstream commit 18e4960c18 ]

The driver currently only calls netdev_set_tc_queue when the number of
TCs is greater than 1.  Instead, the comparison should be greater than
or equal to 1.  Even with 1 TC, we need to set the queue mapping.

This bug can cause warnings when the number of TCs is changed back to 1.

Fixes: 7809592d3e ("bnxt_en: Enable MSIX early in bnxt_init_one().")
Signed-off-by: Michael Chan <michael.chan@broadcom.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-02-11 04:36:35 -08:00
Lorenzo Bianconi
b265bc503a net: mvneta: fix XDP support if sw bm is used as fallback
[ Upstream commit 44efc78d0e ]

In order to fix XDP support if sw buffer management is used as fallback
for hw bm devices, define MVNETA_SKB_HEADROOM as maximum between
XDP_PACKET_HEADROOM and NET_SKB_PAD and let the hw aligns the IP header
to 4-byte boundary.
Fix rx_offset_correction initialization if mvneta_bm_port_init fails in
mvneta_resume routine

Fixes: 0db51da7a8 ("net: mvneta: add basic XDP support")
Tested-by: Sven Auhagen <sven.auhagen@voleatech.de>
Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-02-11 04:36:35 -08:00
Taehee Yoo
0a1014134c gtp: use __GFP_NOWARN to avoid memalloc warning
[ Upstream commit bd5cd35b78 ]

gtp hashtable size is received by user-space.
So, this hashtable size could be too large. If so, kmalloc will internally
print a warning message.
This warning message is actually not necessary for the gtp module.
So, this patch adds __GFP_NOWARN to avoid this message.

Splat looks like:
[ 2171.200049][ T1860] WARNING: CPU: 1 PID: 1860 at mm/page_alloc.c:4713 __alloc_pages_nodemask+0x2f3/0x740
[ 2171.238885][ T1860] Modules linked in: gtp veth openvswitch nsh nf_conncount nf_nat nf_conntrack nf_defrag_ipv]
[ 2171.262680][ T1860] CPU: 1 PID: 1860 Comm: gtp-link Not tainted 5.5.0+ #321
[ 2171.263567][ T1860] Hardware name: innotek GmbH VirtualBox/VirtualBox, BIOS VirtualBox 12/01/2006
[ 2171.264681][ T1860] RIP: 0010:__alloc_pages_nodemask+0x2f3/0x740
[ 2171.265332][ T1860] Code: 64 fe ff ff 65 48 8b 04 25 c0 0f 02 00 48 05 f0 12 00 00 41 be 01 00 00 00 49 89 47 0
[ 2171.267301][ T1860] RSP: 0018:ffff8880b51af1f0 EFLAGS: 00010246
[ 2171.268320][ T1860] RAX: ffffed1016a35e43 RBX: 0000000000000000 RCX: 0000000000000000
[ 2171.269517][ T1860] RDX: 0000000000000000 RSI: 000000000000000b RDI: 0000000000000000
[ 2171.270305][ T1860] RBP: 0000000000040cc0 R08: ffffed1018893109 R09: dffffc0000000000
[ 2171.275973][ T1860] R10: 0000000000000001 R11: ffffed1018893108 R12: 1ffff11016a35e43
[ 2171.291039][ T1860] R13: 000000000000000b R14: 000000000000000b R15: 00000000000f4240
[ 2171.292328][ T1860] FS:  00007f53cbc83740(0000) GS:ffff8880da000000(0000) knlGS:0000000000000000
[ 2171.293409][ T1860] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 2171.294586][ T1860] CR2: 000055f540014508 CR3: 00000000b49f2004 CR4: 00000000000606e0
[ 2171.295424][ T1860] Call Trace:
[ 2171.295756][ T1860]  ? mark_held_locks+0xa5/0xe0
[ 2171.296659][ T1860]  ? __alloc_pages_slowpath+0x21b0/0x21b0
[ 2171.298283][ T1860]  ? gtp_encap_enable_socket+0x13e/0x400 [gtp]
[ 2171.298962][ T1860]  ? alloc_pages_current+0xc1/0x1a0
[ 2171.299475][ T1860]  kmalloc_order+0x22/0x80
[ 2171.299936][ T1860]  kmalloc_order_trace+0x1d/0x140
[ 2171.300437][ T1860]  __kmalloc+0x302/0x3a0
[ 2171.300896][ T1860]  gtp_newlink+0x293/0xba0 [gtp]
[ ... ]

Fixes: 459aa660eb ("gtp: add initial driver for datapath of GPRS Tunneling Protocol (GTP-U)")
Signed-off-by: Taehee Yoo <ap420073@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-02-11 04:36:35 -08:00