Commit Graph

4 Commits

Author SHA1 Message Date
Ed Schouten
6472ac3d8a Mark all SYSCTL_NODEs static that have no corresponding SYSCTL_DECLs.
The SYSCTL_NODE macro defines a list that stores all child-elements of
that node. If there's no SYSCTL_DECL macro anywhere else, there's no
reason why it shouldn't be static.
2011-11-07 15:43:11 +00:00
Ed Maste
4222358722 Fix REDZONE(9) on amd64 and perhaps other 64 bit targets -- ensure the space
that redzone adds to the allocation for storing its metadata is at least as
large as the metadata that it will store there.

Submitted by:	Nima Misaghian
2008-08-13 17:32:48 +00:00
Robert Watson
9ccca7d1b1 Modify stack(9) stack_print() and stack_sbuf_print() routines to use new
linker interfaces for looking up function names and offsets from
instruction pointers.  Create two variants of each call: one that is
"DDB-safe" and avoids locking in the linker, and one that is safe for
use in live kernels, by virtue of observing locking, and in particular
safe when kernel modules are being loaded and unloaded simultaneous to
their use.  This will allow them to be used outside of debugging
contexts.

Modify two of three current stack(9) consumers to use the DDB-safe
interfaces, as they run in low-level debugging contexts, such as inside
lockmgr(9) and the kernel memory allocator.

Update man page.
2007-12-01 22:04:16 +00:00
Pawel Jakub Dawidek
847a2a1716 Add buffer corruption protection (RedZone) for kernel's malloc(9).
It detects both: buffer underflows and buffer overflows bugs at runtime
(on free(9) and realloc(9)) and prints backtraces from where memory was
allocated and from where it was freed.

Tested by:	kris
2006-01-31 11:09:21 +00:00