diff options
Diffstat (limited to 'arch/s390')
| -rw-r--r-- | arch/s390/include/asm/elf.h | 2 | ||||
| -rw-r--r-- | arch/s390/include/asm/ptrace.h | 18 | ||||
| -rw-r--r-- | arch/s390/kernel/syscall.c | 3 |
3 files changed, 12 insertions, 11 deletions
diff --git a/arch/s390/include/asm/elf.h b/arch/s390/include/asm/elf.h index 1376bd2b0392..bd00c94620d3 100644 --- a/arch/s390/include/asm/elf.h +++ b/arch/s390/include/asm/elf.h @@ -172,7 +172,7 @@ struct arch_elf_state { !current->mm->context.alloc_pgste) { \ set_thread_flag(TIF_PGSTE); \ set_pt_regs_flag(task_pt_regs(current), \ - PIF_SYSCALL_RESTART); \ + PIF_EXECVE_PGSTE_RESTART); \ _state->rc = -EAGAIN; \ } \ _state->rc; \ diff --git a/arch/s390/include/asm/ptrace.h b/arch/s390/include/asm/ptrace.h index 808da21235ab..61b22aa990e7 100644 --- a/arch/s390/include/asm/ptrace.h +++ b/arch/s390/include/asm/ptrace.h @@ -11,15 +11,15 @@ #include <uapi/asm/ptrace.h> #include <asm/tpi.h> -#define PIF_SYSCALL 0 /* inside a system call */ -#define PIF_SYSCALL_RESTART 1 /* restart the current system call */ -#define PIF_SYSCALL_RET_SET 2 /* return value was set via ptrace */ -#define PIF_GUEST_FAULT 3 /* indicates program check in sie64a */ - -#define _PIF_SYSCALL BIT(PIF_SYSCALL) -#define _PIF_SYSCALL_RESTART BIT(PIF_SYSCALL_RESTART) -#define _PIF_SYSCALL_RET_SET BIT(PIF_SYSCALL_RET_SET) -#define _PIF_GUEST_FAULT BIT(PIF_GUEST_FAULT) +#define PIF_SYSCALL 0 /* inside a system call */ +#define PIF_EXECVE_PGSTE_RESTART 1 /* restart execve for PGSTE binaries */ +#define PIF_SYSCALL_RET_SET 2 /* return value was set via ptrace */ +#define PIF_GUEST_FAULT 3 /* indicates program check in sie64a */ + +#define _PIF_SYSCALL BIT(PIF_SYSCALL) +#define _PIF_EXECVE_PGSTE_RESTART BIT(PIF_EXECVE_PGSTE_RESTART) +#define _PIF_SYSCALL_RET_SET BIT(PIF_SYSCALL_RET_SET) +#define _PIF_GUEST_FAULT BIT(PIF_GUEST_FAULT) #ifndef __ASSEMBLY__ diff --git a/arch/s390/kernel/syscall.c b/arch/s390/kernel/syscall.c index 0322f00f84ac..8fe2d23b64f4 100644 --- a/arch/s390/kernel/syscall.c +++ b/arch/s390/kernel/syscall.c @@ -134,6 +134,7 @@ static void do_syscall(struct pt_regs *regs) * work, the ptrace code sets PIF_SYSCALL_RET_SET, which is checked here * and if set, the syscall will be skipped. */ + if (unlikely(test_and_clear_pt_regs_flag(regs, PIF_SYSCALL_RET_SET))) goto out; regs->gprs[2] = -ENOSYS; @@ -141,7 +142,7 @@ static void do_syscall(struct pt_regs *regs) goto out; do { regs->gprs[2] = current->thread.sys_call_table[nr](regs); - } while (test_and_clear_pt_regs_flag(regs, PIF_SYSCALL_RESTART)); + } while (test_and_clear_pt_regs_flag(regs, PIF_EXECVE_PGSTE_RESTART)); out: syscall_exit_to_user_mode_work(regs); } |