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| author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-07-01 17:13:56 +0000 |
|---|---|---|
| committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-07-01 17:13:56 +0000 |
| commit | 511e4ecd3211371086a9698ce4042700957cee33 (patch) | |
| tree | 7e4c8dbd3f81844f362f480dd8c9244afd9e31dc /arch/openrisc/kernel/traps.c | |
| parent | Adding debian version 6.9.2-1~exp1. (diff) | |
| download | linux-511e4ecd3211371086a9698ce4042700957cee33.tar.xz linux-511e4ecd3211371086a9698ce4042700957cee33.zip | |
Merging upstream version 6.9.7.
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'arch/openrisc/kernel/traps.c')
| -rw-r--r-- | arch/openrisc/kernel/traps.c | 48 |
1 files changed, 29 insertions, 19 deletions
diff --git a/arch/openrisc/kernel/traps.c b/arch/openrisc/kernel/traps.c index 9370888c9..90554a555 100644 --- a/arch/openrisc/kernel/traps.c +++ b/arch/openrisc/kernel/traps.c @@ -180,29 +180,39 @@ asmlinkage void unhandled_exception(struct pt_regs *regs, int ea, int vector) asmlinkage void do_fpe_trap(struct pt_regs *regs, unsigned long address) { - int code = FPE_FLTUNK; - unsigned long fpcsr = regs->fpcsr; - - if (fpcsr & SPR_FPCSR_IVF) - code = FPE_FLTINV; - else if (fpcsr & SPR_FPCSR_OVF) - code = FPE_FLTOVF; - else if (fpcsr & SPR_FPCSR_UNF) - code = FPE_FLTUND; - else if (fpcsr & SPR_FPCSR_DZF) - code = FPE_FLTDIV; - else if (fpcsr & SPR_FPCSR_IXF) - code = FPE_FLTRES; - - /* Clear all flags */ - regs->fpcsr &= ~SPR_FPCSR_ALLF; - - force_sig_fault(SIGFPE, code, (void __user *)regs->pc); + if (user_mode(regs)) { + int code = FPE_FLTUNK; + unsigned long fpcsr = regs->fpcsr; + + if (fpcsr & SPR_FPCSR_IVF) + code = FPE_FLTINV; + else if (fpcsr & SPR_FPCSR_OVF) + code = FPE_FLTOVF; + else if (fpcsr & SPR_FPCSR_UNF) + code = FPE_FLTUND; + else if (fpcsr & SPR_FPCSR_DZF) + code = FPE_FLTDIV; + else if (fpcsr & SPR_FPCSR_IXF) + code = FPE_FLTRES; + + /* Clear all flags */ + regs->fpcsr &= ~SPR_FPCSR_ALLF; + + force_sig_fault(SIGFPE, code, (void __user *)regs->pc); + } else { + pr_emerg("KERNEL: Illegal fpe exception 0x%.8lx\n", regs->pc); + die("Die:", regs, SIGFPE); + } } asmlinkage void do_trap(struct pt_regs *regs, unsigned long address) { - force_sig_fault(SIGTRAP, TRAP_BRKPT, (void __user *)regs->pc); + if (user_mode(regs)) { + force_sig_fault(SIGTRAP, TRAP_BRKPT, (void __user *)regs->pc); + } else { + pr_emerg("KERNEL: Illegal trap exception 0x%.8lx\n", regs->pc); + die("Die:", regs, SIGILL); + } } asmlinkage void do_unaligned_access(struct pt_regs *regs, unsigned long address) |