mirror-linux/arch/x86/kernel/fpu
Kevin Buettner 5714ee50bb copy_xstate_to_kernel: Fix typo which caused GDB regression
This fixes a regression encountered while running the
gdb.base/corefile.exp test in GDB's test suite.

In my testing, the typo prevented the sw_reserved field of struct
fxregs_state from being output to the kernel XSAVES area.  Thus the
correct mask corresponding to XCR0 was not present in the core file for
GDB to interrogate, resulting in the following behavior:

   [kev@f32-1 gdb]$ ./gdb -q testsuite/outputs/gdb.base/corefile/corefile testsuite/outputs/gdb.base/corefile/corefile.core
   Reading symbols from testsuite/outputs/gdb.base/corefile/corefile...
   [New LWP 232880]

   warning: Unexpected size of section `.reg-xstate/232880' in core file.

With the typo fixed, the test works again as expected.

Signed-off-by: Kevin Buettner <kevinb@redhat.com>
Fixes: 9e46365459 ("copy_xstate_to_kernel(): don't leave parts of destination uninitialized")
Cc: Al Viro <viro@zeniv.linux.org.uk>
Cc: Dave Airlie <airlied@gmail.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2020-07-19 17:09:10 -07:00
..
Makefile treewide: Add SPDX license identifier - Makefile/Kconfig 2019-05-21 10:50:46 +02:00
bugs.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
core.c x86/fpu: Reset MXCSR to default in kernel_fpu_begin() 2020-06-29 10:02:00 +02:00
init.c x86/fpu/xstate: Define new macros for supervisor and user xstates 2020-05-12 20:34:38 +02:00
regset.c x86/fpu/xstate: Rename validate_xstate_header() to validate_user_xstate_header() 2020-05-12 20:20:32 +02:00
signal.c x86/fpu/xstate: Restore supervisor states for signal return 2020-05-16 12:20:50 +02:00
xstate.c copy_xstate_to_kernel: Fix typo which caused GDB regression 2020-07-19 17:09:10 -07:00