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| author |   Alexander Aring <aahringo@redhat.com> | 2021-11-02 15:17:20 -0400 |
|---|---|---|
| committer |   David Teigland <teigland@redhat.com> | 2021-11-02 14:39:20 -0500 |
| commit | 9af5b8f0ead7cd90161b0555ed8e85ee38f79fa5 (patch) | |
| tree | ea127bf5ce24641ae0cf177234319fcf25d14461 /virt | |
| parent | fs: dlm: let handle callback data as void (diff) | |
| download | linux-dev-9af5b8f0ead7cd90161b0555ed8e85ee38f79fa5.tar.xz linux-dev-9af5b8f0ead7cd90161b0555ed8e85ee38f79fa5.zip | |
fs: dlm: add debugfs rawmsg send functionality
This patch adds a dlm functionality to send a raw dlm message to a
specific cluster node. This raw message can be build by user space and
send out by writing the message to "rawmsg" dlm debugfs file.
There is a in progress scapy dlm module which provides a easy build of
DLM messages in user space. For example:
DLM(h_cmd=3, o_nextcmd=1, h_nodeid=1, h_lockspace=0xe4f48a18, ...)
The goal is to provide an easy reproducable state to crash DLM or to
fuzz the DLM kernel stack if there are possible ways to crash it.
Note: that if the sequence number is zero and dlm version is not set to
3.1 the kernel will automatic will set a right sequence number, otherwise
DLM stack testing is not possible.
Signed-off-by: Alexander Aring <aahringo@redhat.com>
Signed-off-by: David Teigland <teigland@redhat.com>
Diffstat (limited to 'virt')
0 files changed, 0 insertions, 0 deletions