diff options
| author | Andi Kleen <ak@linux.intel.com> | 2019-03-29 17:47:35 -0700 |
|---|---|---|
| committer | Thomas Gleixner <tglx@linutronix.de> | 2019-04-19 17:46:55 +0200 |
| commit | c03e27506a564ec7db1b179e7464835901f49751 (patch) | |
| tree | 7e999ad5ac9a9b33d5d57688f7868d69fc1700c7 /arch/x86/kernel/kprobes | |
| parent | 3c454f47e67bf5a65dc892cd50221a7de695870f (diff) | |
x86/asm: Mark all top level asm statements as .text
With gcc toplevel assembler statements that do not mark themselves as .text
may end up in other sections. This causes LTO boot crashes because various
assembler statements ended up in the middle of the initcall section. It's
also a latent problem without LTO, although it's currently not known to
cause any real problems.
According to the gcc team it's expected behavior.
Always mark all the top level assembler statements as text so that they
switch to the right section.
Signed-off-by: Andi Kleen <ak@linux.intel.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Link: https://lkml.kernel.org/r/20190330004743.29541-1-andi@firstfloor.org
Diffstat (limited to 'arch/x86/kernel/kprobes')
| -rw-r--r-- | arch/x86/kernel/kprobes/core.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/x86/kernel/kprobes/core.c b/arch/x86/kernel/kprobes/core.c index a034cb808e7e..31ab91c9c4e9 100644 --- a/arch/x86/kernel/kprobes/core.c +++ b/arch/x86/kernel/kprobes/core.c @@ -715,6 +715,7 @@ NOKPROBE_SYMBOL(kprobe_int3_handler); * calls trampoline_handler() runs, which calls the kretprobe's handler. */ asm( + ".text\n" ".global kretprobe_trampoline\n" ".type kretprobe_trampoline, @function\n" "kretprobe_trampoline:\n" |