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| Filename | Latest commit message | Latest commit date |
|---|---|---|
61b71562be
commit 421d467dc2d483175bad4fb76a31b9e5a3d744cf upstream.
When batadv_v_ogm_aggr_send is called for an inactive interface, the skb
is silently dropped by batadv_v_ogm_send_to_if() but never freed causing
the following memory leak:
unreferenced object 0xffff00000c164800 (size 512):
comm "kworker/u8:1", pid 2648, jiffies 4295122303 (age 97.656s)
hex dump (first 32 bytes):
00 80 af 09 00 00 ff ff e1 09 00 00 75 01 60 83 ............u.`.
1f 00 00 00 b8 00 00 00 15 00 05 00 da e3 d3 64 ...............d
backtrace:
[<0000000007ad20f6>] __kmalloc_track_caller+0x1a8/0x310
[<00000000d1029e55>] kmalloc_reserve.constprop.0+0x70/0x13c
[<000000008b9d4183>] __alloc_skb+0xec/0x1fc
[<00000000c7af5051>] __netdev_alloc_skb+0x48/0x23c
[<00000000642ee5f5>] batadv_v_ogm_aggr_send+0x50/0x36c
[<0000000088660bd7>] batadv_v_ogm_aggr_work+0x24/0x40
[<0000000042fc2606>] process_one_work+0x3b0/0x610
[<000000002f2a0b1c>] worker_thread+0xa0/0x690
[<0000000059fae5d4>] kthread+0x1fc/0x210
[<000000000c587d3a>] ret_from_fork+0x10/0x20
Free the skb in that case to fix this leak.
Cc: stable@vger.kernel.org
Fixes:
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| arch | ||
| block | ||
| certs | ||
| crypto | ||
| Documentation | ||
| drivers | ||
| fs | ||
| include | ||
| init | ||
| ipc | ||
| kernel | ||
| lib | ||
| LICENSES | ||
| mm | ||
| net | ||
| samples | ||
| scripts | ||
| security | ||
| sound | ||
| tools | ||
| usr | ||
| virt | ||
| .clang-format | ||
| .cocciconfig | ||
| .get_maintainer.ignore | ||
| .gitattributes | ||
| .gitignore | ||
| .mailmap | ||
| COPYING | ||
| CREDITS | ||
| Kbuild | ||
| Kconfig | ||
| MAINTAINERS | ||
| Makefile | ||
| 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.