mirror of
git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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3d7e33825d
I realise jprobes are a razor-blades-included type of interface, but that
doesn't mean we can't try and make them safer to use. This guy I know once
wrote code like this:
struct jprobe jp = { .kp.symbol_name = "foo", .entry = "jprobe_foo" };
And then his kernel exploded. Oops.
This patch adds an arch hook, arch_deref_entry_point() (I don't like it
either) which takes the void * in a struct jprobe, and gives back the text
address that it represents.
We can then use that in register_jprobe() to check that the entry point we're
passed is actually in the kernel text, rather than just some random value.
Signed-off-by: Michael Ellerman <michael@ellerman.id.au>
Cc: Prasanna S Panchamukhi <prasanna@in.ibm.com>
Acked-by: Ananth N Mavinakayanahalli <ananth@in.ibm.com>
Cc: Anil S Keshavamurthy <anil.s.keshavamurthy@intel.com>
Cc: David S. Miller <davem@davemloft.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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| .. | ||
| cpufreq | ||
| acpi-ext.c | ||
| acpi-processor.c | ||
| acpi.c | ||
| asm-offsets.c | ||
| audit.c | ||
| brl_emu.c | ||
| crash.c | ||
| crash_dump.c | ||
| cyclone.c | ||
| efi.c | ||
| efi_stub.S | ||
| entry.h | ||
| entry.S | ||
| err_inject.c | ||
| esi.c | ||
| esi_stub.S | ||
| fsys.S | ||
| gate-data.S | ||
| gate.lds.S | ||
| gate.S | ||
| head.S | ||
| ia64_ksyms.c | ||
| init_task.c | ||
| iosapic.c | ||
| irq.c | ||
| irq_ia64.c | ||
| irq_lsapic.c | ||
| ivt.S | ||
| jprobes.S | ||
| kprobes.c | ||
| machine_kexec.c | ||
| machvec.c | ||
| Makefile | ||
| mca.c | ||
| mca_asm.S | ||
| mca_drv.c | ||
| mca_drv.h | ||
| mca_drv_asm.S | ||
| minstate.h | ||
| module.c | ||
| msi_ia64.c | ||
| numa.c | ||
| pal.S | ||
| palinfo.c | ||
| patch.c | ||
| perfmon.c | ||
| perfmon_default_smpl.c | ||
| perfmon_generic.h | ||
| perfmon_itanium.h | ||
| perfmon_mckinley.h | ||
| perfmon_montecito.h | ||
| process.c | ||
| ptrace.c | ||
| relocate_kernel.S | ||
| sal.c | ||
| salinfo.c | ||
| semaphore.c | ||
| setup.c | ||
| sigframe.h | ||
| signal.c | ||
| smp.c | ||
| smpboot.c | ||
| sys_ia64.c | ||
| time.c | ||
| topology.c | ||
| traps.c | ||
| unaligned.c | ||
| uncached.c | ||
| unwind.c | ||
| unwind_decoder.c | ||
| unwind_i.h | ||
| vmlinux.lds.S | ||