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| Filename | Latest commit message | Latest commit date |
|---|---|---|
d391b5c4b1
[ Upstream commit 536dc5df2808efbefc5acee334d3c4f701790ec0 ]
kmemleak detects the following memory leak when hot removing
a network device:
unreferenced object 0xffff888083f63600 (size 256):
comm "kworker/0:1", pid 12, jiffies 4294831717 (age 1113.676s)
hex dump (first 32 bytes):
00 40 c7 33 80 88 ff ff 00 00 00 00 10 00 00 00 .@.3............
00 00 00 00 ad 4e ad de ff ff ff ff 00 00 00 00 .....N..........
backtrace:
[<00000000d4a8f5be>] rndis_filter_device_add+0x117/0x11c0 [hv_netvsc]
[<000000009c02d75b>] netvsc_probe+0x5e7/0xbf0 [hv_netvsc]
[<00000000ddafce23>] vmbus_probe+0x74/0x170 [hv_vmbus]
[<00000000046e64f1>] really_probe+0x22f/0xb50
[<000000005cc35eb7>] driver_probe_device+0x25e/0x370
[<0000000043c642b2>] bus_for_each_drv+0x11f/0x1b0
[<000000005e3d09f0>] __device_attach+0x1c6/0x2f0
[<00000000a72c362f>] bus_probe_device+0x1a6/0x260
[<0000000008478399>] device_add+0x10a3/0x18e0
[<00000000cf07b48c>] vmbus_device_register+0xe7/0x1e0 [hv_vmbus]
[<00000000d46cf032>] vmbus_add_channel_work+0x8ab/0x1770 [hv_vmbus]
[<000000002c94bb64>] process_one_work+0x919/0x17d0
[<0000000096de6781>] worker_thread+0x87/0xb40
[<00000000fbe7397e>] kthread+0x333/0x3f0
[<000000004f844269>] ret_from_fork+0x3a/0x50
rndis_filter_device_add() allocates an instance of struct rndis_device
which never gets deallocated as rndis_filter_device_remove() sets
net_device->extension which points to the rndis_device struct to NULL,
leaving the rndis_device dangling.
Since net_device->extension is eventually freed in free_netvsc_device(),
we refrain from setting it to NULL inside rndis_filter_device_remove()
Signed-off-by: Mohammed Gamal <mgamal@redhat.com>
Reviewed-by: Haiyang Zhang <haiyangz@microsoft.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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| README | ||
Linux kernel
============
There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.
In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``. The formatted documentation can also be read online at:
https://www.kernel.org/doc/html/latest/
There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.
Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.