ftrace/x86: Fix trace event registration for syscalls without arguments

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The refactoring of SYSCALL_DEFINE0() macros removed the ABI stubs and
simply defines __abi_sys_$NAME as alias of __do_sys_$NAME.

As a result kallsyms_lookup() returns "__do_sys_$NAME" which does not match
with the declared trace event name.

See also commit 1c758a2202 ("tracing/x86: Update syscall trace events to
handle new prefixed syscall func names").

Add __do_sys_ to the valid prefixes which are checked in
arch_syscall_match_sym_name().

Fixes: d2b5de495e ("x86/entry: Refactor SYSCALL_DEFINE0 macros")
Signed-off-by: Konstantin Khlebnikov <khlebnikov@yandex-team.ru>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Acked-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
Link: https://lkml.kernel.org/r/158636958997.7900.16485049455470033557.stgit@buzz

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Konstantin Khlebnikov 2020-04-08 21:13:10 +03:00 • committed by Thomas Gleixner

parent ab5130186d

commit fdc63ff0e4

1 changed files with 3 additions and 2 deletions

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arch/x86/include/asm/ftrace.h

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