9731a0cce9
Upon return from a syscall handlers, the r1, r2, and r3 registers could contain random kernel data that should not be leaked to user mode. Zero these out before returning from _arm_do_syscall(). Fixes #7753. The invocation macros need a clobber if r1, r2, or r3 are not used to carry syscall arguments. This is a partial fix for #7754 but there appear to be other issues. Signed-off-by: Andrew Boie <andrew.p.boie@intel.com> |
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| .. | ||
| arc | ||
| arm | ||
| nios2 | ||
| posix | ||
| riscv32 | ||
| x86 | ||
| xtensa | ||
| cpu.h | ||