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ARM: fix kill( ,SIGFPE) breakage 

Commit 7771c66457 ("signal/arm: Document conflicts with SI_USER and
SIGFPE") broke the siginfo structure for userspace triggered signals,
causing the strace testsuite to regress.  Fix this by eliminating
the FPE_FIXME definition (which is at the root of the breakage) and
use FPE_FLTINV instead for the case where the hardware appears to be
reporting nonsense.

Fixes: 7771c66457 ("signal/arm: Document conflicts with SI_USER and SIGFPE")
Suggested-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
hifive-unleashed-5.1
Russell King 2018-04-13 00:22:47 +01:00
parent 0d73c3f8e7
commit 92d44a42af
2 changed files with 1 additions and 14 deletions
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13
arch/arm/include/uapi/asm/siginfo.h
View File

@ -1,13 +0,0 @@
#ifndef __ASM_SIGINFO_H
#define __ASM_SIGINFO_H
#include <asm-generic/siginfo.h>
/*
* SIGFPE si_codes
*/
#ifdef __KERNEL__
#define FPE_FIXME 0 /* Broken dup of SI_USER */
#endif /* __KERNEL__ */
#endif

2
arch/arm/vfp/vfpmodule.c
View File

@ -257,7 +257,7 @@ static void vfp_raise_exceptions(u32 exceptions, u32 inst, u32 fpscr, struct pt_
if (exceptions == VFP_EXCEPTION_ERROR) {
vfp_panic("unhandled bounce", inst);
vfp_raise_sigfpe(FPE_FIXME, regs);
vfp_raise_sigfpe(FPE_FLTINV, regs);
return;
}