mirror of https://gitee.com/openkylin/linux.git
4de8ebeff8
One is by Yang Shi who added a READ_ONCE_NOCHECK() to the scan of the stack made by the stack tracer. As the stack tracer scans the entire kernel stack, KASAN triggers seeing it as a "stack out of bounds" error. As the scan is looking at the contents of the stack from parent functions. The NOCHECK() tells KASAN that this is done on purpose, and is not some kind of stack overflow. The second fix is to the ftrace selftests, to retrieve the PID of executed commands from the shell with "$!" and not by parsing "jobs". -----BEGIN PGP SIGNATURE----- Version: GnuPG v1 iQEcBAABAgAGBQJWyycyAAoJEKKk/i67LK/8ALoH/RkMZ7Cih7vXb30wB13xSNrB 6o4ApuC4YOS9Un/4ruCXb+cGbW2LJLHkEU2ageoHLOZMvwuAM7iQ6fTUW1KxCRP2 ECvqyqi0ZRyoi/CibxVVH9hHEAJzUTwok67nkLeZBqIN9Fglcfd7toAwgcrH3y59 Pybyv5CV2eaff5IKoLXKZJNRLdrVLeM7v4BvdI0dxEikhWZ0XsA0RoIaNfTPqyQJ F6sJ/njdoMMJK4N8CCPxlvnvEOzn0DnJnfUNUQEj5J3YU9DbAHAACaBSg5oSh9oK BcFYKV2GIzPku1cafutRRlErcGyB2yqv7bB8Eo86zXRHbeonaj4XGJmH276ldVg= =srlj -----END PGP SIGNATURE----- Merge tag 'trace-fixes-v4.5-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace Pull tracing fixes from Steven Rostedt: "Two more small fixes. One is by Yang Shi who added a READ_ONCE_NOCHECK() to the scan of the stack made by the stack tracer. As the stack tracer scans the entire kernel stack, KASAN triggers seeing it as a "stack out of bounds" error. As the scan is looking at the contents of the stack from parent functions. The NOCHECK() tells KASAN that this is done on purpose, and is not some kind of stack overflow. The second fix is to the ftrace selftests, to retrieve the PID of executed commands from the shell with '$!' and not by parsing 'jobs'" * tag 'trace-fixes-v4.5-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace: tracing, kasan: Silence Kasan warning in check_stack of stack_tracer ftracetest: Fix instance test to use proper shell command for pids |
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