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authorMauro Carvalho Chehab <mchehab@s-opensource.com>2016-11-07 17:03:18 -0200
committerJonathan Corbet <corbet@lwn.net>2016-11-07 16:50:28 -0700
commit337c188dff4a850643ee299c38b2591bbda937a7 (patch)
tree0f138816980cc848a5a8fa11acda862a9d060bbe /Documentation/admin-guide/oops-tracing.rst
parentc730904b16c7ee6f3bba2d1536621151745fc314 (diff)
admin-guide: move tainted kernels info to a separate file
The tainted kernels info is not directly related to the oops tracing. So, let's move it to a separate file. Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com> Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Diffstat (limited to 'Documentation/admin-guide/oops-tracing.rst')
-rw-r--r--Documentation/admin-guide/oops-tracing.rst59
1 files changed, 0 insertions, 59 deletions
diff --git a/Documentation/admin-guide/oops-tracing.rst b/Documentation/admin-guide/oops-tracing.rst
index 13be8d7bcfe7..1f5e2b716631 100644
--- a/Documentation/admin-guide/oops-tracing.rst
+++ b/Documentation/admin-guide/oops-tracing.rst
@@ -239,62 +239,3 @@ processed by ``klogd``::
---------------------------------------------------------------------------
-Tainted kernels
----------------
-
-Some oops reports contain the string **'Tainted: '** after the program
-counter. This indicates that the kernel has been tainted by some
-mechanism. The string is followed by a series of position-sensitive
-characters, each representing a particular tainted value.
-
- 1) 'G' if all modules loaded have a GPL or compatible license, 'P' if
- any proprietary module has been loaded. Modules without a
- MODULE_LICENSE or with a MODULE_LICENSE that is not recognised by
- insmod as GPL compatible are assumed to be proprietary.
-
- 2) ``F`` if any module was force loaded by ``insmod -f``, ``' '`` if all
- modules were loaded normally.
-
- 3) ``S`` if the oops occurred on an SMP kernel running on hardware that
- hasn't been certified as safe to run multiprocessor.
- Currently this occurs only on various Athlons that are not
- SMP capable.
-
- 4) ``R`` if a module was force unloaded by ``rmmod -f``, ``' '`` if all
- modules were unloaded normally.
-
- 5) ``M`` if any processor has reported a Machine Check Exception,
- ``' '`` if no Machine Check Exceptions have occurred.
-
- 6) ``B`` if a page-release function has found a bad page reference or
- some unexpected page flags.
-
- 7) ``U`` if a user or user application specifically requested that the
- Tainted flag be set, ``' '`` otherwise.
-
- 8) ``D`` if the kernel has died recently, i.e. there was an OOPS or BUG.
-
- 9) ``A`` if the ACPI table has been overridden.
-
- 10) ``W`` if a warning has previously been issued by the kernel.
- (Though some warnings may set more specific taint flags.)
-
- 11) ``C`` if a staging driver has been loaded.
-
- 12) ``I`` if the kernel is working around a severe bug in the platform
- firmware (BIOS or similar).
-
- 13) ``O`` if an externally-built ("out-of-tree") module has been loaded.
-
- 14) ``E`` if an unsigned module has been loaded in a kernel supporting
- module signature.
-
- 15) ``L`` if a soft lockup has previously occurred on the system.
-
- 16) ``K`` if the kernel has been live patched.
-
-The primary reason for the **'Tainted: '** string is to tell kernel
-debuggers if this is a clean kernel or if anything unusual has
-occurred. Tainting is permanent: even if an offending module is
-unloaded, the tainted value remains to indicate that the kernel is not
-trustworthy.