Philippe Elie df9d177aa2 oProfile: oops when profile_pc() returns ~0LU ... Instruction pointer returned by profile_pc() can be a random value. This break the assumption than we can safely set struct op_sample.eip field to a magic value to signal to the per-cpu buffer reader side special event like task switch ending up in a segfault in get_task_mm() when profile_pc() return ~0UL. Fixed by sanitizing the sampled eip and reject/log invalid eip. Problem reported by Sami Farin, patch tested by him. Signed-off-by: Philippe Elie <phil.el@wanadoo.fr> Tested-by: Sami Farin <safari-kernel@safari.iki.fi> Cc: <stable@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>		2007-11-14 18:45:37 -08:00
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buffer_sync.c
buffer_sync.h
cpu_buffer.c
cpu_buffer.h
event_buffer.c
event_buffer.h
oprof.c
oprof.h
oprofile_files.c
oprofile_stats.c
oprofile_stats.h
oprofilefs.c
timer_int.c