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| author | Daniel Hellstrom <daniel@gaisler.com> | 2011-02-01 12:39:59 -0800 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2011-02-01 12:39:59 -0800 |
| commit | 2492218c63dca0fb4f041bdc366d243ae3426b40 (patch) | |
| tree | 7bb9caeba7d5df3a8799d82a5ce6cbc180885587 /arch | |
| parent | 5edddaab1d5d6143c23fef119a24ea768915681a (diff) | |
| download | linux-2492218c63dca0fb4f041bdc366d243ae3426b40.tar.gz linux-2492218c63dca0fb4f041bdc366d243ae3426b40.tar.bz2 linux-2492218c63dca0fb4f041bdc366d243ae3426b40.zip | |
sparc32: unaligned memory access (MNA) trap handler bug
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>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/sparc/kernel/una_asm_32.S | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/arch/sparc/kernel/una_asm_32.S b/arch/sparc/kernel/una_asm_32.S index 8cc03458eb7e..8f096e84a937 100644 --- a/arch/sparc/kernel/una_asm_32.S +++ b/arch/sparc/kernel/una_asm_32.S @@ -24,9 +24,9 @@ retl_efault: .globl __do_int_store __do_int_store: ld [%o2], %g1 - cmp %1, 2 + cmp %o1, 2 be 2f - cmp %1, 4 + cmp %o1, 4 be 1f srl %g1, 24, %g2 srl %g1, 16, %g7 |