diff options
Diffstat (limited to 'sys/kern/kern_syscalls.c')
| -rw-r--r-- | sys/kern/kern_syscalls.c | 12 |
1 files changed, 11 insertions, 1 deletions
diff --git a/sys/kern/kern_syscalls.c b/sys/kern/kern_syscalls.c index a437fb3..6452d96 100644 --- a/sys/kern/kern_syscalls.c +++ b/sys/kern/kern_syscalls.c @@ -97,8 +97,11 @@ syscall_module_handler(struct module *mod, int what, void *arg) case MOD_LOAD : error = syscall_register(data->offset, data->new_sysent, &data->old_sysent); - if (error) + if (error) { + /* Leave a mark so we know to safely unload below. */ + data->offset = NULL; return error; + } ms.intval = *data->offset; MOD_XLOCK; module_setspecific(mod, &ms); @@ -108,6 +111,13 @@ syscall_module_handler(struct module *mod, int what, void *arg) return error; case MOD_UNLOAD : + /* + * MOD_LOAD failed, so just return without calling the + * chained handler since we didn't pass along the MOD_LOAD + * event. + */ + if (data->offset == NULL) + return (0); if (data->chainevh) { error = data->chainevh(mod, what, data->chainarg); if (error) |
