ptrace: Introduce exception_ip arch hook

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[ Upstream commit 11ba1728be ]

On architectures with delay slot, architecture level instruction
pointer (or program counter) in pt_regs may differ from where
exception was triggered.

Introduce exception_ip hook to invoke architecture code and determine
actual instruction pointer to the exception.

Link: https://lore.kernel.org/lkml/00d1b813-c55f-4365-8d81-d70258e10b16@app.fastmail.com/
Signed-off-by: Jiaxun Yang <jiaxun.yang@flygoat.com>
Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
Stable-dep-of: 8fa5070833 ("mm/memory: Use exception ip to search exception tables")
Signed-off-by: Sasha Levin <sashal@kernel.org>

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Jiaxun Yang 2024-02-02 12:30:26 +00:00 • committed by Greg Kroah-Hartman

parent 2252913f15

commit fdd12a80f6

3 changed files with 13 additions and 0 deletions

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2

arch/mips/include/asm/ptrace.h

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7

arch/mips/kernel/ptrace.c

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4

include/linux/ptrace.h

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