arm64: signal: Make force_signal_inject more robust

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force_signal_inject is a little flakey:

  * It only knows about SIGILL and SIGSEGV, so can potentially deliver
    other signals based on a partially initialised siginfo_t

  * It sets si_addr to point at the PC for SIGSEGV

  * It always operates on current, so doesn't need the regs argument

This patch fixes these issues by always assigning the si_addr field to
the address parameter of the function and updates the callers (including
those that indirectly call via arm64_notify_segfault) accordingly.

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

...

This commit is contained in:

Will Deacon 2018-02-20 14:16:29 +00:00

parent e0f6429dc1

commit 2c9120f3a8

4 changed files with 17 additions and 19 deletions

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6

arch/arm64/include/asm/traps.h

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2

arch/arm64/kernel/armv8_deprecated.c

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5

arch/arm64/kernel/fpsimd.c

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23

arch/arm64/kernel/traps.c

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