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Eric W. Biederman 90bc9fb159 x86/mm/pkeys: Fix fill_sig_info_pkey
SEGV_PKUERR is a signal specific si_code which happens to have the
same numeric value as several others: BUS_MCEERR_AR, ILL_ILLTRP,
FPE_FLTOVF, TRAP_HWBKPT, CLD_TRAPPED, POLL_ERR, SEGV_THREAD_ID,
as such it is not safe to just test the si_code the signal number
must also be tested to prevent a false positive in fill_sig_info_pkey.

I found this error by inspection, and BUS_MCEERR_AR appears to
be a real candidate for confusion.  So pass in si_signo and fix it.

Cc: Dave Hansen <dave.hansen@linux.intel.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Ingo Molnar <mingo@kernel.org>
Fixes: 019132ff3d ("x86/mm/pkeys: Fill in pkey field in siginfo")
Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
2018-01-12 14:23:53 -06:00
arch x86/mm/pkeys: Fix fill_sig_info_pkey 2018-01-12 14:23:53 -06:00
block
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fs signal: Ensure generic siginfos the kernel sends have all bits initialized 2018-01-12 14:21:07 -06:00
include signal: Introduce clear_siginfo 2018-01-12 14:21:06 -06:00
init
ipc signal: Ensure generic siginfos the kernel sends have all bits initialized 2018-01-12 14:21:07 -06:00
kernel signal: Ensure generic siginfos the kernel sends have all bits initialized 2018-01-12 14:21:07 -06:00
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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.