5.15-stable review patch. If anyone has any objections, please let me know.
------------------
From: Arnd Bergmann <arnd@xxxxxxxx>
[ Upstream commit 63e2f40c9e3187641afacde4153f54b3ee4dbc8c ]
My earlier fix missed an incorrect function prototype that shows up on
native 32-bit builds:
In file included from fs/notify/fanotify/fanotify_user.c:14:
include/linux/syscalls.h:248:25: error: conflicting types for 'sys_fanotify_mark'; have 'long int(int, unsigned int, u32, u32, int, const char *)' {aka 'long int(int, unsigned int, unsigned int, unsigned int, int, const char *)'}
1924 | SYSCALL32_DEFINE6(fanotify_mark,
| ^~~~~~~~~~~~~~~~~
include/linux/syscalls.h:862:17: note: previous declaration of 'sys_fanotify_mark' with type 'long int(int, unsigned int, u64, int, const char *)' {aka 'long int(int, unsigned int, long long unsigned int, int, const char *)'}
On x86 and powerpc, the prototype is also wrong but hidden in an #ifdef,
so it never caused problems.
Add another alternative declaration that matches the conditional function
definition.
Fixes: 403f17a33073 ("parisc: use generic sys_fanotify_mark implementation")
Cc: stable@xxxxxxxxxxxxxxx
Reported-by: Guenter Roeck <linux@xxxxxxxxxxxx>
Reported-by: Geert Uytterhoeven <geert@xxxxxxxxxxxxxx>
Reported-by: kernel test robot <lkp@xxxxxxxxx>
Signed-off-by: Arnd Bergmann <arnd@xxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
include/linux/syscalls.h | 6 ++++++
1 file changed, 6 insertions(+)
diff --git a/include/linux/syscalls.h b/include/linux/syscalls.h
index fed3d440b6548..b8037a46ff41d 100644
--- a/include/linux/syscalls.h
+++ b/include/linux/syscalls.h
@@ -959,9 +959,15 @@ asmlinkage long sys_prlimit64(pid_t pid, unsigned int resource,
const struct rlimit64 __user *new_rlim,
struct rlimit64 __user *old_rlim);
asmlinkage long sys_fanotify_init(unsigned int flags, unsigned int event_f_flags);
+#if defined(CONFIG_ARCH_SPLIT_ARG64)
+asmlinkage long sys_fanotify_mark(int fanotify_fd, unsigned int flags,
+ unsigned int mask_1, unsigned int mask_2,
+ int dfd, const char __user * pathname);
+#else
asmlinkage long sys_fanotify_mark(int fanotify_fd, unsigned int flags,
u64 mask, int fd,
const char __user *pathname);
+#endif
asmlinkage long sys_name_to_handle_at(int dfd, const char __user *name,
struct file_handle __user *handle,
int __user *mnt_id, int flag);
--
2.43.0
