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| author | Linus Torvalds <torvalds@linux-foundation.org> | 2023-12-19 15:26:59 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2023-12-20 21:30:27 -0800 |
| commit | a4aebe936554dac6a91e5d091179c934f8325708 (patch) | |
| tree | 0bce99baa6b14557f097d059b3b32d7cdfe4c7d9 /arch/riscv/include/asm/syscall_wrapper.h | |
| parent | eee7f5b48e20c585dc8069b3ab8abdcabd0afded (diff) | |
| download | linux-a4aebe936554dac6a91e5d091179c934f8325708.tar.gz linux-a4aebe936554dac6a91e5d091179c934f8325708.tar.bz2 linux-a4aebe936554dac6a91e5d091179c934f8325708.zip | |
posix-timers: Get rid of [COMPAT_]SYS_NI() uses
Only the posix timer system calls use this (when the posix timer support
is disabled, which does not actually happen in any normal case), because
they had debug code to print out a warning about missing system calls.
Get rid of that special case, and just use the standard COND_SYSCALL
interface that creates weak system call stubs that return -ENOSYS for
when the system call does not exist.
This fixes a kCFI issue with the SYS_NI() hackery:
CFI failure at int80_emulation+0x67/0xb0 (target: sys_ni_posix_timers+0x0/0x70; expected type: 0xb02b34d9)
WARNING: CPU: 0 PID: 48 at int80_emulation+0x67/0xb0
Reported-by: kernel test robot <oliver.sang@intel.com>
Reviewed-by: Sami Tolvanen <samitolvanen@google.com>
Tested-by: Sami Tolvanen <samitolvanen@google.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Dave Hansen <dave.hansen@linux.intel.com>
Cc: Borislav Petkov <bp@alien8.de>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'arch/riscv/include/asm/syscall_wrapper.h')
| -rw-r--r-- | arch/riscv/include/asm/syscall_wrapper.h | 5 |
1 files changed, 0 insertions, 5 deletions
diff --git a/arch/riscv/include/asm/syscall_wrapper.h b/arch/riscv/include/asm/syscall_wrapper.h index 1d7942c8a6cb..eeec04b7dae6 100644 --- a/arch/riscv/include/asm/syscall_wrapper.h +++ b/arch/riscv/include/asm/syscall_wrapper.h @@ -46,9 +46,6 @@ asmlinkage long __riscv_sys_ni_syscall(const struct pt_regs *); return sys_ni_syscall(); \ } -#define COMPAT_SYS_NI(name) \ - SYSCALL_ALIAS(__riscv_compat_sys_##name, sys_ni_posix_timers); - #endif /* CONFIG_COMPAT */ #define __SYSCALL_DEFINEx(x, name, ...) \ @@ -82,6 +79,4 @@ asmlinkage long __riscv_sys_ni_syscall(const struct pt_regs *); return sys_ni_syscall(); \ } -#define SYS_NI(name) SYSCALL_ALIAS(__riscv_sys_##name, sys_ni_posix_timers); - #endif /* __ASM_SYSCALL_WRAPPER_H */ |