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sunrpc: clean up properly in gss_mech_unregister()

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gss_mech_register() calls svcauth_gss_register_pseudoflavor() for each
flavour, but gss_mech_unregister() does not call auth_domain_put().
This is unbalanced and makes it impossible to reload the module.

Change svcauth_gss_register_pseudoflavor() to return the registered
auth_domain, and save it for later release.

Cc: stable@vger.kernel.org (v2.6.12+)
Link: https://bugzilla.kernel.org/show_bug.cgi?id=206651
Signed-off-by: NeilBrown <neilb@suse.de>
Signed-off-by: J. Bruce Fields <bfields@redhat.com>
This commit is contained in:
NeilBrown 2020-05-22 12:01:33 +10:00 • committed by J. Bruce Fields
parent d47a5dc288
commit 24c5efe41c
4 changed files with 18 additions and 10 deletions
Download patch file Download diff file Expand all files Collapse all files

1
include/linux/sunrpc/gss_api.h
View file

@ -84,6 +84,7 @@ struct pf_desc {
u32 service;
char *name;
char *auth_domain_name;
struct auth_domain *domain;
bool datatouch;
};

3
include/linux/sunrpc/svcauth_gss.h
View file

@ -20,7 +20,8 @@ int gss_svc_init(void);
void gss_svc_shutdown(void);
int gss_svc_init_net(struct net *net);
void gss_svc_shutdown_net(struct net *net);
int svcauth_gss_register_pseudoflavor(u32 pseudoflavor, char * name);
struct auth_domain *svcauth_gss_register_pseudoflavor(u32 pseudoflavor,
char *name);
u32 svcauth_gss_flavor(struct auth_domain *dom);
#endif /* _LINUX_SUNRPC_SVCAUTH_GSS_H */