linux-toradex.git/arch/sparc/kernel/una_asm_32.S, branch v3.2.74 Linux kernel for Apalis and Colibri modules sparc32: unaligned memory access (MNA) trap handler bug 2011-02-01T20:39:59+00:00 Daniel Hellstrom daniel@gaisler.com 2011-02-01T20:39:59+00:00 2492218c63dca0fb4f041bdc366d243ae3426b40 Since commit f0e98c387e61de00646be31fab4c2fa0224e1efb ("[SPARC]: Fix link errors with gcc-4.3") the MNA trap handler does not emulate stores to unaligned addresses correctly. MNA operation from both kernel and user space are affected. A typical effect of this bug is nr_frags in skbs are overwritten during buffer copying/checksum-calculation, or maximally 6 bytes of data in the network buffer will be overwitten with garbage. Signed-off-by: Daniel Hellstrom <daniel@gaisler.com> Signed-off-by: David S. Miller <davem@davemloft.net> 
Since commit f0e98c387e61de00646be31fab4c2fa0224e1efb ("[SPARC]: Fix
link errors with gcc-4.3") the MNA trap handler does not emulate
stores to unaligned addresses correctly. MNA operation from both
kernel and user space are affected.

A typical effect of this bug is nr_frags in skbs are overwritten
during buffer copying/checksum-calculation, or maximally 6 bytes
of data in the network buffer will be overwitten with garbage.

Signed-off-by: Daniel Hellstrom <daniel@gaisler.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
sparc: prepare kernel/ for unification 2008-12-04T17:17:20+00:00 Sam Ravnborg sam@ravnborg.org 2008-12-03T11:08:37+00:00 d670bd4f803c8b646acd20f3ba21e65458293faf o sparc32 files with identical names to sparc64 renamed to <name>_32.S o introduced a few Kconfig helpers to simplify Makefile logic o refactored Makefile to prepare for unification - use obj-$(CONFIG_SPARC32) for sparc32 specific files - use <name>_$(BITS) for files where sparc64 has a _64 variant - sparc64 directly include a few files where sparc32 builds them, refer to these files directly (no BITS) - sneaked in -Werror as used by sparc64 o modified sparc/Makefile to use the new names for head/init_task Signed-off-by: Sam Ravnborg <sam@ravnborg.org> Signed-off-by: David S. Miller <davem@davemloft.net> 
o sparc32 files with identical names to sparc64 renamed to <name>_32.S
o introduced a few Kconfig helpers to simplify Makefile logic
o refactored Makefile to prepare for unification
  - use obj-$(CONFIG_SPARC32) for sparc32 specific files
  - use <name>_$(BITS) for files where sparc64 has a _64 variant
  - sparc64 directly include a few files where sparc32 builds them,
    refer to these files directly (no BITS)
  - sneaked in -Werror as used by sparc64
o modified sparc/Makefile to use the new names for head/init_task

Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: David S. Miller <davem@davemloft.net>