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The commit275f22148e("ipc: rename old-style shmctl/semctl/msgctl syscalls") switched various architectures to use sys_old_*ctl() with ipc_parse_version, including mips n32/n64. However, for mips o32, commit0d6040d468("arch: add split IPC system calls where needed") added separate IPC syscalls without properly using the old-style handlers. This causes applications using uClibc-ng to fail with -EINVAL when calling semctl/shmctl/msgctl with IPC_64 flag, as uClibc-ng uses the syscall numbers from kernel headers to determine whether to use the IPC multiplexer or split syscalls. In contrast, glibc is unaffected as it uses a unified feature test macro __ASSUME_DIRECT_SYSVIPC_SYSCALLS (disabled for mips-o32) to make this decision. Fix this by switching the o32 ABI entries for semctl, shmctl and msgctl to use the old-style handlers, matching the behavior of other architectures and fixing compatibility with uClibc-ng. Signed-off-by: Ism Hong <ism.hong@gmail.com> Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
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 reStructuredText 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.