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Steven Rostedt 64a07bd82e [PATCH] protect remove_proc_entry ... It has been discovered that the remove_proc_entry has a race in the removing of entries in the proc file system that are siblings. There's no protection around the traversing and removing of elements that belong in the same subdirectory. This subdirectory list is protected in other areas by the BKL. So the BKL was at first used to protect this area too, but unfortunately, remove_proc_entry may be called with spinlocks held. The BKL may schedule, so this was not a solution. The final solution was to add a new global spin lock to protect this list, called proc_subdir_lock. This lock now protects the list in remove_proc_entry, and I also went around looking for other areas that this list is modified and added this protection there too. Care must be taken since these locations call several functions that may also schedule. Since I don't see any location that these functions that modify the subdirectory list are called by interrupts, the irqsave/restore versions of the spin lock was _not_ used. Signed-off-by: Steven Rostedt <rostedt@goodmis.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>		19 years ago
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Makefile	…
array.c	[PATCH] hrtimer: switch itimers to hrtimer	19 years ago
base.c	VFS: New /proc file /proc/self/mountstats	19 years ago
generic.c	[PATCH] protect remove_proc_entry	19 years ago
inode-alloc.txt	…
inode.c	[PATCH] cpuset memory spread: slab cache format	19 years ago
internal.h	[PATCH] fs/proc/: function prototypes belong in header files	19 years ago
kcore.c	[PATCH] capable/capability.h (fs/)	19 years ago
kmsg.c	…
mmu.c	…
nommu.c	[PATCH] output of /proc/maps on nommu systems is incomplete	20 years ago
proc_devtree.c	[PATCH] protect remove_proc_entry	19 years ago
proc_misc.c	[PATCH] slab: implement /proc/slab_allocators	19 years ago
proc_tty.c	…
root.c	[PATCH] fix handling of st_nlink on procfs root	19 years ago
task_mmu.c	[PATCH] smaps: shared fix	19 years ago
task_nommu.c	…
vmcore.c	[PATCH] kdump: vmcore compilation warning fix	19 years ago