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b738a185be
skb->rbnode is sharing three skb fields : next, prev, dev When a packet is sent, TCP keeps the original skb (master) in a rtx queue, which was converted to rbtree a while back. __tcp_transmit_skb() is responsible to clone the master skb, and add the TCP header to the clone before sending it to network layer. skb_clone() already clears skb->next and skb->prev, but copies the master oskb->dev into the clone. We need to clear skb->dev, otherwise lower layers could interpret the value as a pointer to a netdev. This old bug surfaced recently when commit |
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arch | ||
block | ||
certs | ||
crypto | ||
Documentation | ||
drivers | ||
fs | ||
include | ||
init | ||
ipc | ||
kernel | ||
lib | ||
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mm | ||
net | ||
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sound | ||
tools | ||
usr | ||
virt | ||
.clang-format | ||
.cocciconfig | ||
.get_maintainer.ignore | ||
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.gitignore | ||
.mailmap | ||
COPYING | ||
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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.