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04b25a5411
When tls_sw_recvmsg() partially copies a record it pops that record from ctx->recv_pkt and places it on rx_list. Next iteration of tls_sw_recvmsg() reads from rx_list via process_rx_list() before it enters the decryption loop. If there is no more records to be read tls_wait_data() will put the process on the wait queue and got to sleep. This is incorrect, because some data was already copied in process_rx_list(). In case of RPC connections process may never get woken up, because peer also simply blocks in read(). I think this may also fix a similar issue when BPF is at play, because after __tcp_bpf_recvmsg() returns some data we subtract it from len and use continue to restart the loop, but len could have just reached 0, so again we'd sleep unnecessarily. That's added by: commit |
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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.