Oleg Nesterov 076a365b3d uprobes: Do not delete uprobe if uprobe_unregister() fails ... delete_uprobe() must not be called if register_for_each_vma(false) fails to remove all breakpoints, __uprobe_unregister() is correct. The problem is that register_for_each_vma(false) always returns 0 and thus this logic does not work. 1. Change verify_opcode() to return 0 rather than -EINVAL when unregister detects the !is_swbp insn, we can treat this case as success and currently unregister paths ignore the error code anyway. 2. Change remove_breakpoint() to propagate the error code from write_opcode(). 3. Change register_for_each_vma(is_register => false) to remove as much breakpoints as possible but return non-zero if remove_breakpoint() fails at least once. Signed-off-by: Oleg Nesterov <oleg@redhat.com> Acked-by: Srikar Dronamraju <srikar@linux.vnet.ibm.com>		2012-10-07 21:19:41 +02:00
..
callchain.c	perf: Add attribute to filter out callchains	2012-08-10 12:40:57 -03:00
core.c	perf: Add ability to attach user stack dump to sample	2012-08-10 12:17:58 -03:00
hw_breakpoint.c	Merge branch 'x86/cleanups' into perf/uprobes	2012-03-13 16:33:03 +01:00
internal.h	perf: Add ability to attach user stack dump to sample	2012-08-10 12:17:58 -03:00
Makefile	uprobes: Move to kernel/events/	2012-02-22 11:08:00 +01:00
ring_buffer.c	perf: Add perf_output_skip function to skip bytes in sample	2012-08-10 12:16:22 -03:00
uprobes.c	uprobes: Do not delete uprobe if uprobe_unregister() fails	2012-10-07 21:19:41 +02:00