panic: add TAINT_SOFTLOCKUP

This taint flag will be set if the system has ever entered a softlockup
state.  Similar to TAINT_WARN it is useful to know whether or not the
system has been in a softlockup state when debugging.

[[email protected]: apply the taint before calling panic()]
Signed-off-by: Josh Hunt <[email protected]>
Cc: Jason Baron <[email protected]>
Cc: Randy Dunlap <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
This commit is contained in:
Josh Hunt 2014-08-08 14:22:31 -07:00 • committed by Linus Torvalds
commit 69361eef90
5 changed files with 6 additions and 0 deletions

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@ -268,6 +268,8 @@ characters, each representing a particular tainted value.
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.
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

View file

@ -826,6 +826,7 @@ can be ORed together:
4096 - An out-of-tree module has been loaded.
8192 - An unsigned module has been loaded in a kernel supporting module
signature.
16384 - A soft lockup has previously occurred on the system.
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