powerpc/traps: Print VMA for unhandled signals
This adds VMA address in the message printed for unhandled signals, similarly to what other architectures, like x86, print. Before this patch, a page fault looked like: pandafault[61470]: unhandled signal 11 at 100007d0 nip 1000061c lr 7fff8d185100 code 2 After this patch, a page fault looks like: pandafault[6303]: segfault 11 at 100007d0 nip 1000061c lr 7fff93c55100 code 2 in pandafault[10000000+10000] Signed-off-by: Murilo Opsfelder Araujo <muriloo@linux.ibm.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
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@ -96,6 +96,19 @@ EXPORT_SYMBOL(__debugger_fault_handler);
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#define TM_DEBUG(x...) do { } while(0)
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#define TM_DEBUG(x...) do { } while(0)
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#endif
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#endif
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static const char *signame(int signr)
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{
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switch (signr) {
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case SIGBUS: return "bus error";
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case SIGFPE: return "floating point exception";
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case SIGILL: return "illegal instruction";
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case SIGSEGV: return "segfault";
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case SIGTRAP: return "unhandled trap";
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}
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return "unknown signal";
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}
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/*
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/*
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* Trap & Exception support
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* Trap & Exception support
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*/
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*/
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@ -317,9 +330,13 @@ static void show_signal_msg(int signr, struct pt_regs *regs, int code,
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if (!unhandled_signal(current, signr))
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if (!unhandled_signal(current, signr))
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return;
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return;
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pr_info("%s[%d]: unhandled signal %d at %lx nip %lx lr %lx code %x\n",
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pr_info("%s[%d]: %s (%d) at %lx nip %lx lr %lx code %x",
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current->comm, current->pid, signr,
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current->comm, current->pid, signame(signr), signr,
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addr, regs->nip, regs->link, code);
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addr, regs->nip, regs->link, code);
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print_vma_addr(KERN_CONT " in ", regs->nip);
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pr_cont("\n");
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}
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}
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void _exception_pkey(int signr, struct pt_regs *regs, int code,
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void _exception_pkey(int signr, struct pt_regs *regs, int code,
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