diff options
| author | Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com> | 2010-11-18 11:16:55 +0100 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2010-11-18 13:40:19 +0100 |
| commit | de31ec8a31046111befd16a7083e3bdda2ff42cf (patch) | |
| tree | 56eb69033dee2c2a81f69318408a71b0c937e582 /arch/x86 | |
| parent | irq_work: Drop cmpxchg() result (diff) | |
| download | linux-de31ec8a31046111befd16a7083e3bdda2ff42cf.tar.xz linux-de31ec8a31046111befd16a7083e3bdda2ff42cf.zip | |
x86/kprobes: Prevent kprobes to probe on save_args()
Prevent kprobes to probe on save_args() since this function
will be called from breakpoint exception handler. That will
cause infinit loop on breakpoint handling.
Signed-off-by: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>
Cc: 2nddept-manager@sdl.hitachi.co.jp
Cc: Ananth N Mavinakayanahalli <ananth@in.ibm.com>
LKML-Reference: <20101118101655.2779.2816.stgit@ltc236.sdl.hitachi.co.jp>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'arch/x86')
| -rw-r--r-- | arch/x86/kernel/entry_64.S | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/arch/x86/kernel/entry_64.S b/arch/x86/kernel/entry_64.S index fe2690d71c0c..e3ba417e8697 100644 --- a/arch/x86/kernel/entry_64.S +++ b/arch/x86/kernel/entry_64.S @@ -295,6 +295,7 @@ ENDPROC(native_usergs_sysret64) .endm /* save partial stack frame */ + .pushsection .kprobes.text, "ax" ENTRY(save_args) XCPT_FRAME cld @@ -334,6 +335,7 @@ ENTRY(save_args) ret CFI_ENDPROC END(save_args) + .popsection ENTRY(save_rest) PARTIAL_FRAME 1 REST_SKIP+8 |