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Haavard Skinnemoen 325d6f5593 avr32: Fix OCD refcounting bug ... Iff the parent has TIF_DEBUG set, _and_ clone_flags includes CLONE_PTRACE we should set the TIF_DEBUG flag for the child and increment the ocd refcount. Otherwise, the TIF_DEBUG flag must be unset. Currently, the child inherits TIF_DEBUG from the parent before copy_thread is called, so TIF_DEBUG may be already be set before we determine whether the child is supposed to inherit debugging capabilities from the parent or not. This means that ocd_enable() won't increment the refcount, because TIF_DEBUG is already set, and that TIF_DEBUG will be set for processes that aren't being debugged. This leads to a refcounting asymmetry, which may show up as ------------[ cut here ]------------ Badness at arch/avr32/kernel/ocd.c:73 PC is at ocd_disable+0x34/0x60 LR is at put_lock_stats+0xa/0x20 as reported by David Brownell. Happens when strace'ing a process that forks a new child process, e.g. "strace mount -tjffs2 mtd1 /mnt", and subsequently killing the child process (e.g. "umount /mnt".) Signed-off-by: Haavard Skinnemoen <hskinnemoen@atmel.com>		17 years ago
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boards	avr32: Use correct config symbol in atstk1004 board code	17 years ago
boot	…
configs	…
kernel	avr32: Fix OCD refcounting bug	17 years ago
lib	…
mach-at32ap	Basic PWM driver for AVR32 and AT91	17 years ago
mm	avr32: Fix broken pte dump code in do_page_fault()	17 years ago
oprofile	…
Kconfig	ide: introduce HAVE_IDE	17 years ago
Kconfig.debug	…
Makefile	…