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4b871ce26a
This is an infrastructure change that makes way for fixing this issue. Each patch was already posted previously so this is just a cleanup of the original mailing list thread(s) which got out of control by now. Everything started here: https://lore.kernel.org/lkml/AM6PR03MB5170B06F3A2B75EFB98D071AE4E60@AM6PR03MB5170.eurprd03.prod.outlook.com/ I added reviewed-by tags from the mailing list threads, except when withdrawn. It took a lot longer than expected to collect everything from the mailinglist threads, since several commit messages have been infected with typos, and they got fixed without a new patch version. - Correct the point of no return. - Add two new mutexes to replace cred_guard_mutex. - Fix each use of cred_guard_mutex. - Update documentation. - Add a test case. -- EWB Removed the last 2 patches they need more work Bernd Edlinger (9): exec: Fix a deadlock in strace selftests/ptrace: add test cases for dead-locks mm: docs: Fix a comment in process_vm_rw_core kernel: doc: remove outdated comment cred.c kernel/kcmp.c: Use new infrastructure to fix deadlocks in execve proc: Use new infrastructure to fix deadlocks in execve proc: io_accounting: Use new infrastructure to fix deadlocks in execve perf: Use new infrastructure to fix deadlocks in execve pidfd: Use new infrastructure to fix deadlocks in execve Eric W. Biederman (5): exec: Only compute current once in flush_old_exec exec: Factor unshare_sighand out of de_thread and call it separately exec: Move cleanup of posix timers on exec out of de_thread exec: Move exec_mmap right after de_thread in flush_old_exec exec: Add exec_update_mutex to replace cred_guard_mutex fs/exec.c | 78 +++++++++++++++++++--------- fs/proc/base.c | 10 ++-- include/linux/binfmts.h | 8 ++- include/linux/sched/signal.h | 9 +++- init/init_task.c | 1 + kernel/cred.c | 2 - kernel/events/core.c | 12 ++--- kernel/fork.c | 5 +- kernel/kcmp.c | 8 +-- kernel/pid.c | 4 +- mm/process_vm_access.c | 2 +- tools/testing/selftests/ptrace/Makefile | 4 +- tools/testing/selftests/ptrace/vmaccess.c | 86 +++++++++++++++++++++++++++++++ 13 files changed, 179 insertions(+), 50 deletions(-) Signed-off-by: Bernd Edlinger <bernd.edlinger@hotmail.de> Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com> |
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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.