From 337c188dff4a850643ee299c38b2591bbda937a7 Mon Sep 17 00:00:00 2001 From: Mauro Carvalho Chehab Date: Mon, 7 Nov 2016 17:03:18 -0200 Subject: 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 Signed-off-by: Jonathan Corbet --- Documentation/admin-guide/oops-tracing.rst | 59 ------------------------------ 1 file changed, 59 deletions(-) (limited to 'Documentation/admin-guide/oops-tracing.rst') 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. -- cgit v1.2.1