arm64: signal: Call arm64_notify_segfault when failing to deliver signal

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If we fail to deliver a signal due to taking an unhandled fault on the
stackframe, we can call arm64_notify_segfault to deliver a SEGV can deal
with printing any unhandled signal messages for us, rather than roll our
own printing code.

A side-effect of this change is that we now deliver the frame address
in si_addr along with an si_code of SEGV_{ACC,MAP}ERR, rather than an
si_addr of 0 and an si_code of SI_KERNEL as before.

Signed-off-by: Will Deacon <will.deacon@arm.com>

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This commit is contained in:

Will Deacon 2018-02-20 15:05:17 +00:00

parent 92ff0674f5

commit f71016a8a8

2 changed files with 5 additions and 15 deletions

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7

arch/arm64/kernel/signal.c

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13

arch/arm64/kernel/signal32.c

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