diff options
| author | Ingo Molnar <mingo@kernel.org> | 2020-06-26 12:24:42 +0200 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2020-06-26 12:24:42 +0200 |
| commit | 2c92d787cc9fad57d05c96bd117782183768258a (patch) | |
| tree | 51c0c567b8be2fd56073a8ce31f8ebd123a7d562 /arch/s390/include/asm/syscall.h | |
| parent | 145a773aef83181d47ebab21bb33c89233aadb1e (diff) | |
| parent | 8be3a53e18e0e1a98f288f6c7f5e9da3adbe9c49 (diff) | |
Merge branch 'linus' into x86/entry, to resolve conflicts
Conflicts:
arch/x86/kernel/traps.c
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'arch/s390/include/asm/syscall.h')
| -rw-r--r-- | arch/s390/include/asm/syscall.h | 12 |
1 files changed, 11 insertions, 1 deletions
diff --git a/arch/s390/include/asm/syscall.h b/arch/s390/include/asm/syscall.h index f073292e9fdb..d9d5de0f67ff 100644 --- a/arch/s390/include/asm/syscall.h +++ b/arch/s390/include/asm/syscall.h @@ -33,7 +33,17 @@ static inline void syscall_rollback(struct task_struct *task, static inline long syscall_get_error(struct task_struct *task, struct pt_regs *regs) { - return IS_ERR_VALUE(regs->gprs[2]) ? regs->gprs[2] : 0; + unsigned long error = regs->gprs[2]; +#ifdef CONFIG_COMPAT + if (test_tsk_thread_flag(task, TIF_31BIT)) { + /* + * Sign-extend the value so (int)-EFOO becomes (long)-EFOO + * and will match correctly in comparisons. + */ + error = (long)(int)error; + } +#endif + return IS_ERR_VALUE(error) ? error : 0; } static inline long syscall_get_return_value(struct task_struct *task, |