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s390/futex: add missing EX_TABLE entry to __futex_atomic_op()

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commit a262d3ad6a upstream.

For some exception types the instruction address points behind the
instruction that caused the exception. Take that into account and add
the missing exception table entry.

Cc: <stable@vger.kernel.org>
Reviewed-by: Vasily Gorbik <gor@linux.ibm.com>
Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Heiko Carstens
2022-10-18 13:44:11 +02:00
committed by Greg Kroah-Hartman
parent 449070996c
commit fe187c801a
1 changed files with 2 additions and 1 deletions
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3
arch/s390/include/asm/futex.h
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@@ -16,7 +16,8 @@
"3: jl 1b\n" \ "3: jl 1b\n" \
" lhi %0,0\n" \ " lhi %0,0\n" \
"4: sacf 768\n" \ "4: sacf 768\n" \
EX_TABLE(0b,4b) EX_TABLE(2b,4b) EX_TABLE(3b,4b) \ EX_TABLE(0b,4b) EX_TABLE(1b,4b) \
EX_TABLE(2b,4b) EX_TABLE(3b,4b) \
: "=d" (ret), "=&d" (oldval), "=&d" (newval), \ : "=d" (ret), "=&d" (oldval), "=&d" (newval), \
"=m" (*uaddr) \ "=m" (*uaddr) \
: "0" (-EFAULT), "d" (oparg), "a" (uaddr), \ : "0" (-EFAULT), "d" (oparg), "a" (uaddr), \