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Eric W. Biederman 260ea10132 [PATCH] ptrace: document the locking rules ... After a lot of reading the code and thinking about how it behaves I have managed to figure out what the current ptrace locking rules are. The current code is in much better that it appears at first glance. The troublesome code paths are actually the code paths that violate the current rules. ptrace uses simple exclusive access as it's locking. You can only touch task->ptrace if the task is stopped and you are the ptracer, or if the task is running and are the task itself. Very simple, very easy to maintain. It just needs to be documented so people know not to touch ptrace from elsewhere. Currently we do have a few pieces of code that are in violation of this rule. Particularly the core dump code, and ptrace_attach. But so far the code looks fixable. Signed-off-by: Eric W. Biederman <ebiederm@xmission.com> Cc: Oleg Nesterov <oleg@tv-sign.ru> Cc: Roland McGrath <roland@redhat.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>		19 years ago
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acpi	[PATCH] Unify pxm_to_node() and node_to_pxm()	19 years ago
asm-alpha	[PATCH] vgacon: make VGA_MAP_MEM take size, remove extra use	19 years ago
asm-arm	Merge branch 'devel' of master.kernel.org:/home/rmk/linux-2.6-arm	19 years ago
asm-arm26	…
asm-cris	…
asm-frv	[PATCH] frv: clean frv unistd.h	19 years ago
asm-generic	[PATCH] squash duplicate page_to_pfn and pfn_to_page	19 years ago
asm-h8300	…
asm-i386	[PATCH] x86: compile fix for asm-i386/alternatives.h	19 years ago
asm-ia64	[PATCH] page migration: sys_move_pages(): support moving of individual pages	19 years ago
asm-m32r	[PATCH] vgacon: make VGA_MAP_MEM take size, remove extra use	19 years ago
asm-m68k	[PATCH] m68k: clean up uaccess.h	19 years ago
asm-m68knommu	[PATCH] m68k: ptrace.h typo fix	19 years ago
asm-mips	[PATCH] Au1550/1200: add missing PSC #define's, make OSS driver use the proper ones	19 years ago
asm-parisc	[PATCH] Delete unused definitions of kvaddr_to_nid	19 years ago
asm-powerpc	Merge git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc	19 years ago
asm-ppc	Merge git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc	19 years ago
asm-s390	[PATCH] s390: add __raw_writeq required by __iowrite64_copy	19 years ago
asm-sh	…
asm-sh64	…
asm-sparc	Merge master.kernel.org:/pub/scm/linux/kernel/git/davem/sparc-2.6	19 years ago
asm-sparc64	[PATCH] vgacon: make VGA_MAP_MEM take size, remove extra use	19 years ago
asm-um	Merge git://git.infradead.org/hdrcleanup-2.6	19 years ago
asm-v850	…
asm-x86_64	[PATCH] sys_move_pages: x86_64 support	19 years ago
asm-xtensa	[PATCH] xtensa: remove verify_area macros	19 years ago
keys	…
linux	[PATCH] ptrace: document the locking rules	19 years ago
math-emu	…
media	…
mtd	Merge git://git.infradead.org/hdrcleanup-2.6	19 years ago
net	Merge branch 'master' into upstream	19 years ago
pcmcia	…
rdma	IB/uverbs: Don't serialize with ib_uverbs_idr_mutex	19 years ago
rxrpc	…
scsi	Merge master.kernel.org:/pub/scm/linux/kernel/git/jejb/scsi-misc-2.6	19 years ago
sound	[ALSA] version 1.0.12rc1	19 years ago
video	…