diff options
author | Ananth N Mavinakayanahalli <ananth@in.ibm.com> | 2007-05-08 03:28:27 -0400 |
---|---|---|
committer | Linus Torvalds <torvalds@woody.linux-foundation.org> | 2007-05-08 14:15:08 -0400 |
commit | 0f95b7fc839bc3272b1bf2325d8748a649bd3534 (patch) | |
tree | c5cbf5eabc5b58867d7a8949c412163e37182542 /arch/i386/kernel/kprobes.c | |
parent | 8f0c45cdf87dc9141e87b0ad2fc6fff216a95f79 (diff) |
Kprobes: print details of kretprobe on assertion failure
In certain cases like when the real return address can't be found or when
the number of tracked calls to a kretprobed function is less than the
number of returns, we may not be able to find the correct return address
after processing a kretprobe. Currently we just do a BUG_ON, but no
information is provided about the actual failing kretprobe.
Print out details of the kretprobe before calling BUG().
Signed-off-by: Ananth N Mavinakayanahalli <ananth@in.ibm.com>
Cc: Prasanna S Panchamukhi <prasanna@in.ibm.com>
Cc: Jim Keniston <jkenisto@us.ibm.com>
Cc: Anil S Keshavamurthy <anil.s.keshavamurthy@intel.com>
Cc: Maneesh Soni <maneesh@in.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'arch/i386/kernel/kprobes.c')
-rw-r--r-- | arch/i386/kernel/kprobes.c | 3 |
1 files changed, 1 insertions, 2 deletions
diff --git a/arch/i386/kernel/kprobes.c b/arch/i386/kernel/kprobes.c index e00f75ecf1a8..3fbef288c376 100644 --- a/arch/i386/kernel/kprobes.c +++ b/arch/i386/kernel/kprobes.c | |||
@@ -449,8 +449,7 @@ fastcall void *__kprobes trampoline_handler(struct pt_regs *regs) | |||
449 | break; | 449 | break; |
450 | } | 450 | } |
451 | 451 | ||
452 | BUG_ON(!orig_ret_address || (orig_ret_address == trampoline_address)); | 452 | kretprobe_assert(ri, orig_ret_address, trampoline_address); |
453 | |||
454 | spin_unlock_irqrestore(&kretprobe_lock, flags); | 453 | spin_unlock_irqrestore(&kretprobe_lock, flags); |
455 | 454 | ||
456 | hlist_for_each_entry_safe(ri, node, tmp, &empty_rp, hlist) { | 455 | hlist_for_each_entry_safe(ri, node, tmp, &empty_rp, hlist) { |