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由 Victor Kamensky 提交于
After 52d7523d (arm64: mm: allow the kernel to handle alignment faults on user accesses) commit user-land accesses that produce unaligned exceptions like in case of aarch32 ldm/stm/ldrd/strd instructions operating on unaligned memory received by user-land as SIGSEGV. It is wrong, it should be reported as SIGBUS as it was before 52d7523d commit. Changed do_bad_area function to take signal and code parameters out of esr value using fault_info table, so in case of do_alignment_fault fault user-land will receive SIGBUS. Wrapped access to fault_info table into esr_to_fault_info function. Cc: <stable@vger.kernel.org> Fixes: 52d7523d (arm64: mm: allow the kernel to handle alignment faults on user accesses) Signed-off-by: NVictor Kamensky <kamensky@cisco.com> Signed-off-by: NWill Deacon <will.deacon@arm.com>
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