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| author | Palmer Dabbelt <palmer@sifive.com> | 2019-01-07 08:45:47 -0800 |
|---|---|---|
| committer | Palmer Dabbelt <palmer@sifive.com> | 2019-01-07 08:45:47 -0800 |
| commit | 801009424e05cf110f016d7fac7fcf20ef94941a (patch) | |
| tree | b46e0f4c1fa20bbd00dc838c19d3b824cc673b23 /arch/riscv/kernel | |
| parent | 2cffc9569050a8dbc0c4a6ee7186c0919487c3ec (diff) | |
| parent | 5aeb1b36cedd3a1dfdbfe368629fed52dee34103 (diff) | |
Fix a handful of audit-related issue
This is sort of a mix between a new feature and a bug fix. I've managed
to screw up merging this patch set a handful of times but I think it's
OK this time around. The main new feature here is audit support for
RISC-V, with some fixes to audit-related bugs that cropped up along the
way:
* The addition of NR_syscalls into unistd.h, which is necessary for
CONFIG_FTRACE_SYSCALLS.
* The definition of CREATE_TRACE_POINTS so
__tracepoint_sys_{enter,exit} get defined.
* A fix for trace_sys_exit() so we can enable
CONFIG_HAVE_SYSCALL_TRACEPOINTS.
Diffstat (limited to 'arch/riscv/kernel')
| -rw-r--r-- | arch/riscv/kernel/entry.S | 4 | ||||
| -rw-r--r-- | arch/riscv/kernel/ptrace.c | 9 |
2 files changed, 10 insertions, 3 deletions
diff --git a/arch/riscv/kernel/entry.S b/arch/riscv/kernel/entry.S index 13d4826ab2a1..355166f57205 100644 --- a/arch/riscv/kernel/entry.S +++ b/arch/riscv/kernel/entry.S @@ -201,7 +201,7 @@ handle_syscall: REG_S s2, PT_SEPC(sp) /* Trace syscalls, but only if requested by the user. */ REG_L t0, TASK_TI_FLAGS(tp) - andi t0, t0, _TIF_SYSCALL_TRACE + andi t0, t0, _TIF_SYSCALL_WORK bnez t0, handle_syscall_trace_enter check_syscall_nr: /* Check to make sure we don't jump to a bogus syscall number. */ @@ -221,7 +221,7 @@ ret_from_syscall: REG_S a0, PT_A0(sp) /* Trace syscalls, but only if requested by the user. */ REG_L t0, TASK_TI_FLAGS(tp) - andi t0, t0, _TIF_SYSCALL_TRACE + andi t0, t0, _TIF_SYSCALL_WORK bnez t0, handle_syscall_trace_exit ret_from_exception: diff --git a/arch/riscv/kernel/ptrace.c b/arch/riscv/kernel/ptrace.c index 60f1e02eed36..2ae5e0284f56 100644 --- a/arch/riscv/kernel/ptrace.c +++ b/arch/riscv/kernel/ptrace.c @@ -18,12 +18,15 @@ #include <asm/ptrace.h> #include <asm/syscall.h> #include <asm/thread_info.h> +#include <linux/audit.h> #include <linux/ptrace.h> #include <linux/elf.h> #include <linux/regset.h> #include <linux/sched.h> #include <linux/sched/task_stack.h> #include <linux/tracehook.h> + +#define CREATE_TRACE_POINTS #include <trace/events/syscalls.h> enum riscv_regset { @@ -163,15 +166,19 @@ void do_syscall_trace_enter(struct pt_regs *regs) if (test_thread_flag(TIF_SYSCALL_TRACEPOINT)) trace_sys_enter(regs, syscall_get_nr(current, regs)); #endif + + audit_syscall_entry(regs->a7, regs->a0, regs->a1, regs->a2, regs->a3); } void do_syscall_trace_exit(struct pt_regs *regs) { + audit_syscall_exit(regs); + if (test_thread_flag(TIF_SYSCALL_TRACE)) tracehook_report_syscall_exit(regs, 0); #ifdef CONFIG_HAVE_SYSCALL_TRACEPOINTS if (test_thread_flag(TIF_SYSCALL_TRACEPOINT)) - trace_sys_exit(regs, regs->regs[0]); + trace_sys_exit(regs, regs_return_value(regs)); #endif } |