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Sowmini Varadhan says: ==================== rds: tcp: fix various rds-tcp issues during netns create/delete sequences Dmitry Vyukov reported some syszkaller panics during netns deletion. While I have not been able to reproduce those exact panics, my attempts to do so uncovered a few other problems, which are fixed patch 2 and patch 3 of this patch series. In addition, as mentioned in, https://www.spinics.net/lists/netdev/msg422997.html code-inspection points that the rds_connection needs to take an explicit refcnt on the struct net so that it is held down until all cleanup is completed for netns removal, and this is fixed by patch1. The following scripts were run concurrently to uncover/test patch{2, 3} while simultaneously running rds-ping to 12.0.0.18 from another system: # cat del.rds while [ 1 ]; do modprobe rds_tcp modprobe -r rds-tcp done # cat del.netns while [ 1 ]; do ip netns delete blue ip netns add blue ip link add link eth1 address a🅱️c:d:e:f blue0 type macvlan ip link set blue0 netns blue ip netns exec blue ip addr add 12.0.0.18/24 dev blue0 ip netns exec blue ifconfig blue0 up sleep 3; done ==================== Signed-off-by: David S. Miller <davem@davemloft.net> |
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Linux kernel ============ This file was moved to Documentation/admin-guide/README.rst Please notice that there are several guides for kernel developers and users. These guides can be rendered in a number of formats, like HTML and PDF. In order to build the documentation, use ``make htmldocs`` or ``make pdfdocs``. There are various text files in the Documentation/ subdirectory, several of them using the Restructured Text markup notation. See Documentation/00-INDEX for a list of what is contained in each file. 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.