The patch "MIPS: kernel: scall: Always run the seccomp syscall filters"
incorrectly calculates the address of the syscall function and instead
attempts a load from the offset of the syscall being invoked into the
table. This completely trashes all n64 userland syscalls. Fix the
address calculation.
Signed-off-by: Paul Burton <paul.burton@xxxxxxxxxx>
Cc: Markos Chandras <markos.chandras@xxxxxxxxxx>
---
Markos: could you please test all 3 ABIs you modified? The n64 one at
least has clearly not been tested.
---
arch/mips/kernel/scall64-64.S | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/arch/mips/kernel/scall64-64.S b/arch/mips/kernel/scall64-64.S
index 59e754e..ffab10a2 100644
--- a/arch/mips/kernel/scall64-64.S
+++ b/arch/mips/kernel/scall64-64.S
@@ -59,7 +59,7 @@ syscall_common:
dsll t0, t2, 3 # offset into table
dla t2, sys_call_table
- daddu t2, t0
+ daddu t0, t2
ld t2, (t0) # syscall routine
beqz t2, illegal_syscall
--
2.5.3
