On Fri, Jan 15, 2021 at 06:41:53PM +0100, Andrey Konovalov wrote: > As of the "arm64: expose FAR_EL1 tag bits in siginfo" patch, the address > that is passed to report_tag_fault has pointer tags in the format of 0x0X, > while KASAN uses 0xFX format (note the difference in the top 4 bits). > > Fix up the pointer tag for kernel pointers in do_tag_check_fault by > setting them to the same value as bit 55. Explicitly use __untagged_addr() > instead of untagged_addr(), as the latter doesn't affect TTBR1 addresses. > > Link: https://linux-review.googlesource.com/id/I9ced973866036d8679e8f4ae325de547eb969649 Reviewed-by: Catalin Marinas <catalin.marinas@xxxxxxx> Unless there are other comments, I'll queue this for -rc5 through the arm64 tree (I already finalised the arm64 for-next/fixes branch for this week). -- Catalin
