ppc32/kprobe: Fix a bug for kprobe stwu r1 There patches is used to fix that known kprobe bug, [BUG?]3.0-rc4+ftrace+kprobe: set kprobe at instruction 'stwu' lead to system crash/freeze
https://lkml.org/lkml/2011/7/3/156 We withdraw the original way to provide a dedicated exception stack. Now we implement this based on Ben's suggestion: https://lkml.org/lkml/2011/11/30/327 Here I fix this bug only for ppc32 since Ben address another problem in ppc64 exception return codes. So I think I'd better send another patch to fix this bug issued from ppc64 firstly. Then its convenient to merge this fix into ppc64. Tiejun Chen (4): powerpc/kprobe: introduce a new thread flag ppc32/kprobe: introduce copy_exc_stack ppc32/kprobe: complete kprobe and migrate exception frame ppc32/kprobe: don't emulate store when kprobe stwu r1 arch/powerpc/include/asm/page_32.h | 1 + arch/powerpc/include/asm/thread_info.h | 2 ++ arch/powerpc/kernel/entry_32.S | 26 ++++++++++++++++++++++++++ arch/powerpc/kernel/misc_32.S | 16 +++++++++++++++- arch/powerpc/kernel/ppc_ksyms.c | 1 + arch/powerpc/lib/sstep.c | 19 +++++++++++++++++-- 6 files changed, 62 insertions(+), 3 deletions(-) Tiejun _______________________________________________ Linuxppc-dev mailing list Linuxppc-dev@lists.ozlabs.org https://lists.ozlabs.org/listinfo/linuxppc-dev