Martin Schwidefsky bcf4dd5f9e s390: fix test_fp_ctl inline assembly contraints ... The test_fp_ctl function is used to test if a given value is a valid floating-point control. The inline assembly in test_fp_ctl uses an incorrect constraint for the 'orig_fpc' variable. If the compiler chooses the same register for 'fpc' and 'orig_fpc' the test_fp_ctl() function always returns true. This allows user space to trigger kernel oopses with invalid floating-point control values on the signal stack. This problem has been introduced with git commit 4725c86055 "s390: fix save and restore of the floating-point-control register" Cc: stable@vger.kernel.org # v3.13+ Reviewed-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>		2016-06-28 09:24:28 +02:00
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asm	s390: fix test_fp_ctl inline assembly contraints	2016-06-28 09:24:28 +02:00
uapi/asm	Small release overall.	2016-05-19 11:27:09 -07:00