lisa/android_kernel_xiaomi_sm8350
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

MIPS: jump_label: Fix compat branch range check

Browse Source 
commit 64ac0befe75bdfaffc396c2b4a0ed5ae6920eeee upstream.

Cast upper bound of branch range to long to do signed compare,
avoid negative offset trigger this warning.

Fixes: 9b6584e35f ("MIPS: jump_label: Use compact branches for >= r6")
Signed-off-by: Jiaxun Yang <jiaxun.yang@flygoat.com>
Cc: stable@vger.kernel.org
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Jiaxun Yang 2022-11-03 15:10:53 +00:00 committed by Greg Kroah-Hartman
parent f967bbc72f
commit 9fbe020829
1 changed files with 1 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
arch/mips/kernel/jump_label.c
View File

@ -56,7 +56,7 @@ void arch_jump_label_transform(struct jump_entry *e,
* The branch offset must fit in the instruction's 26 * The branch offset must fit in the instruction's 26
* bit field. * bit field.
*/ */
WARN_ON((offset >= BIT(25)) || WARN_ON((offset >= (long)BIT(25)) ||
(offset < -(long)BIT(25))); (offset < -(long)BIT(25)));
insn.j_format.opcode = bc6_op; insn.j_format.opcode = bc6_op;