From: Tobias Klauser <tklauser@xxxxxxxxxx> Subject: ipc: adjust proc_ipc_sem_dointvec definition to match prototype Commit 32927393dc1c ("sysctl: pass kernel pointers to ->proc_handler") changed ctl_table.proc_handler to take a kernel pointer. Adjust the signature of proc_ipc_sem_dointvec to match ctl_table.proc_handler which fixes the following sparse error/warning: ipc/ipc_sysctl.c:94:47: warning: incorrect type in argument 3 (different address spaces) ipc/ipc_sysctl.c:94:47: expected void *buffer ipc/ipc_sysctl.c:94:47: got void [noderef] __user *buffer ipc/ipc_sysctl.c:194:35: warning: incorrect type in initializer (incompatible argument 3 (different address spaces)) ipc/ipc_sysctl.c:194:35: expected int ( [usertype] *proc_handler )( ... ) ipc/ipc_sysctl.c:194:35: got int ( * )( ... ) Link: https://lkml.kernel.org/r/20200825105846.5193-1-tklauser@xxxxxxxxxx Fixes: 32927393dc1c ("sysctl: pass kernel pointers to ->proc_handler") Signed-off-by: Tobias Klauser <tklauser@xxxxxxxxxx> Cc: Christoph Hellwig <hch@xxxxxx> Cc: Alexander Viro <viro@xxxxxxxxxxxxxxxxxx> Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> --- ipc/ipc_sysctl.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- a/ipc/ipc_sysctl.c~ipc-adjust-proc_ipc_sem_dointvec-definition-to-match-prototype +++ a/ipc/ipc_sysctl.c @@ -85,7 +85,7 @@ static int proc_ipc_auto_msgmni(struct c } static int proc_ipc_sem_dointvec(struct ctl_table *table, int write, - void __user *buffer, size_t *lenp, loff_t *ppos) + void *buffer, size_t *lenp, loff_t *ppos) { int ret, semmni; struct ipc_namespace *ns = current->nsproxy->ipc_ns; _