Josef Bacik (3): sunrpc: add a struct rpc_stats arg to rpc_create_args nfs: expose /proc/net/sunrpc/nfs in net namespaces nfs: make the rpc_stat per net namespace
Kuniyuki Iwashima (1): nfs: Handle error of rpc_proc_register() in nfs_net_init().
Wang Zhaolong (1): sunrpc: fix KABI broken in struct rpc_create_args
fs/nfs/client.c | 5 ++++- fs/nfs/inode.c | 13 +++++++++---- fs/nfs/internal.h | 2 -- fs/nfs/netns.h | 2 ++ include/linux/sunrpc/clnt.h | 2 +- net/sunrpc/clnt.c | 5 ++++- 6 files changed, 20 insertions(+), 9 deletions(-)
From: Josef Bacik josef@toxicpanda.com
stable inclusion from stable-v5.10.217 commit 95ebd5fc15b7522a03b95f42148278bfbfb7dc03 category: bugfix bugzilla: https://gitee.com/src-openeuler/kernel/issues/I9W3QR CVE: CVE-2024-36939
Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=...
--------------------------------
[ Upstream commit 2057a48d0dd00c6a2a94ded7df2bf1d3f2a4a0da ]
We want to be able to have our rpc stats handled in a per network namespace manner, so add an option to rpc_create_args to specify a different rpc_stats struct instead of using the one on the rpc_program.
Signed-off-by: Josef Bacik josef@toxicpanda.com Signed-off-by: Trond Myklebust trond.myklebust@hammerspace.com Stable-dep-of: 24457f1be29f ("nfs: Handle error of rpc_proc_register() in nfs_net_init().") Signed-off-by: Sasha Levin sashal@kernel.org Signed-off-by: Wang Zhaolong wangzhaolong1@huawei.com --- include/linux/sunrpc/clnt.h | 1 + net/sunrpc/clnt.c | 5 ++++- 2 files changed, 5 insertions(+), 1 deletion(-)
diff --git a/include/linux/sunrpc/clnt.h b/include/linux/sunrpc/clnt.h index 39b8a0b85902..4648ae3f5bd2 100644 --- a/include/linux/sunrpc/clnt.h +++ b/include/linux/sunrpc/clnt.h @@ -134,6 +134,7 @@ struct rpc_create_args { const char *servername; const char *nodename; const struct rpc_program *program; + struct rpc_stat *stats; u32 prognumber; /* overrides program->number */ u32 version; rpc_authflavor_t authflavor; diff --git a/net/sunrpc/clnt.c b/net/sunrpc/clnt.c index 66cefa888c0a..8f8144c0eca0 100644 --- a/net/sunrpc/clnt.c +++ b/net/sunrpc/clnt.c @@ -396,7 +396,7 @@ static struct rpc_clnt * rpc_new_client(const struct rpc_create_args *args, clnt->cl_maxproc = version->nrprocs; clnt->cl_prog = args->prognumber ? : program->number; clnt->cl_vers = version->number; - clnt->cl_stats = program->stats; + clnt->cl_stats = args->stats ? : program->stats; clnt->cl_metrics = rpc_alloc_iostats(clnt); rpc_init_pipe_dir_head(&clnt->cl_pipedir_objects); err = -ENOMEM; @@ -672,6 +672,7 @@ struct rpc_clnt *rpc_clone_client(struct rpc_clnt *clnt) .version = clnt->cl_vers, .authflavor = clnt->cl_auth->au_flavor, .cred = clnt->cl_cred, + .stats = clnt->cl_stats, }; return __rpc_clone_client(&args, clnt); } @@ -694,6 +695,7 @@ rpc_clone_client_set_auth(struct rpc_clnt *clnt, rpc_authflavor_t flavor) .version = clnt->cl_vers, .authflavor = flavor, .cred = clnt->cl_cred, + .stats = clnt->cl_stats, }; return __rpc_clone_client(&args, clnt); } @@ -974,6 +976,7 @@ struct rpc_clnt *rpc_bind_new_program(struct rpc_clnt *old, .version = vers, .authflavor = old->cl_auth->au_flavor, .cred = old->cl_cred, + .stats = old->cl_stats, }; struct rpc_clnt *clnt; int err;
From: Josef Bacik josef@toxicpanda.com
stable inclusion from stable-v5.10.217 commit 6eef21eb7a165601882dad0419a630e32d2d7a2c category: bugfix bugzilla: https://gitee.com/src-openeuler/kernel/issues/I9W3QR CVE: CVE-2024-36939
Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=...
--------------------------------
[ Upstream commit d47151b79e3220e72ae323b8b8e9d6da20dc884e ]
We're using nfs mounts inside of containers in production and noticed that the nfs stats are not exposed in /proc. This is a problem for us as we use these stats for monitoring, and have to do this awkward bind mount from the main host into the container in order to get to these states.
Add the rpc_proc_register call to the pernet operations entry and exit points so these stats can be exposed inside of network namespaces.
Signed-off-by: Josef Bacik josef@toxicpanda.com Signed-off-by: Trond Myklebust trond.myklebust@hammerspace.com Stable-dep-of: 24457f1be29f ("nfs: Handle error of rpc_proc_register() in nfs_net_init().") Signed-off-by: Sasha Levin sashal@kernel.org Signed-off-by: Wang Zhaolong wangzhaolong1@huawei.com --- fs/nfs/inode.c | 6 ++---- 1 file changed, 2 insertions(+), 4 deletions(-)
diff --git a/fs/nfs/inode.c b/fs/nfs/inode.c index 36f415278c04..51c721e2f555 100644 --- a/fs/nfs/inode.c +++ b/fs/nfs/inode.c @@ -2226,11 +2226,13 @@ EXPORT_SYMBOL_GPL(nfs_net_id); static int nfs_net_init(struct net *net) { nfs_clients_init(net); + rpc_proc_register(net, &nfs_rpcstat); return nfs_fs_proc_net_init(net); }
static void nfs_net_exit(struct net *net) { + rpc_proc_unregister(net, "nfs"); nfs_fs_proc_net_exit(net); nfs_clients_exit(net); } @@ -2289,15 +2291,12 @@ static int __init init_nfs_fs(void) if (err) goto out1;
- rpc_proc_register(&init_net, &nfs_rpcstat); - err = register_nfs_fs(); if (err) goto out0;
return 0; out0: - rpc_proc_unregister(&init_net, "nfs"); nfs_destroy_directcache(); out1: nfs_destroy_writepagecache(); @@ -2330,7 +2329,6 @@ static void __exit exit_nfs_fs(void) nfs_destroy_nfspagecache(); nfs_fscache_unregister(); unregister_pernet_subsys(&nfs_net_ops); - rpc_proc_unregister(&init_net, "nfs"); unregister_nfs_fs(); nfs_fs_proc_exit(); nfsiod_stop();
From: Josef Bacik josef@toxicpanda.com
stable inclusion from stable-v5.10.217 commit afdbc21a92a0cdc497d8879aeff7b284094fae02 category: bugfix bugzilla: https://gitee.com/src-openeuler/kernel/issues/I9W3QR CVE: CVE-2024-36939
Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=...
--------------------------------
[ Upstream commit 1548036ef1204df65ca5a16e8b199c858cb80075 ]
Now that we're exposing the rpc stats on a per-network namespace basis, move this struct into struct nfs_net and use that to make sure only the per-network namespace stats are exposed.
Signed-off-by: Josef Bacik josef@toxicpanda.com Signed-off-by: Trond Myklebust trond.myklebust@hammerspace.com Stable-dep-of: 24457f1be29f ("nfs: Handle error of rpc_proc_register() in nfs_net_init().") Signed-off-by: Sasha Levin sashal@kernel.org Signed-off-by: Wang Zhaolong wangzhaolong1@huawei.com --- fs/nfs/client.c | 5 ++++- fs/nfs/inode.c | 4 +++- fs/nfs/internal.h | 2 -- fs/nfs/netns.h | 2 ++ 4 files changed, 9 insertions(+), 4 deletions(-)
diff --git a/fs/nfs/client.c b/fs/nfs/client.c index f5e261f6338a..70b4793bee1a 100644 --- a/fs/nfs/client.c +++ b/fs/nfs/client.c @@ -73,7 +73,6 @@ const struct rpc_program nfs_program = { .number = NFS_PROGRAM, .nrvers = ARRAY_SIZE(nfs_version), .version = nfs_version, - .stats = &nfs_rpcstat, .pipe_dir_name = NFS_PIPE_DIRNAME, };
@@ -501,6 +500,7 @@ int nfs_create_rpc_client(struct nfs_client *clp, const struct nfs_client_initdata *cl_init, rpc_authflavor_t flavor) { + struct nfs_net *nn = net_generic(clp->cl_net, nfs_net_id); struct rpc_clnt *clnt = NULL; struct rpc_create_args args = { .net = clp->cl_net, @@ -512,6 +512,7 @@ int nfs_create_rpc_client(struct nfs_client *clp, .servername = clp->cl_hostname, .nodename = cl_init->nodename, .program = &nfs_program, + .stats = &nn->rpcstats, .version = clp->rpc_ops->version, .authflavor = flavor, .cred = cl_init->cred, @@ -1110,6 +1111,8 @@ void nfs_clients_init(struct net *net) #endif spin_lock_init(&nn->nfs_client_lock); nn->boot_time = ktime_get_real(); + memset(&nn->rpcstats, 0, sizeof(nn->rpcstats)); + nn->rpcstats.program = &nfs_program;
nfs_netns_sysfs_setup(nn, net); } diff --git a/fs/nfs/inode.c b/fs/nfs/inode.c index 51c721e2f555..4ae50340c115 100644 --- a/fs/nfs/inode.c +++ b/fs/nfs/inode.c @@ -2225,8 +2225,10 @@ EXPORT_SYMBOL_GPL(nfs_net_id);
static int nfs_net_init(struct net *net) { + struct nfs_net *nn = net_generic(net, nfs_net_id); + nfs_clients_init(net); - rpc_proc_register(net, &nfs_rpcstat); + rpc_proc_register(net, &nn->rpcstats); return nfs_fs_proc_net_init(net); }
diff --git a/fs/nfs/internal.h b/fs/nfs/internal.h index a7e0970b5bfe..9a72abfb46ab 100644 --- a/fs/nfs/internal.h +++ b/fs/nfs/internal.h @@ -435,8 +435,6 @@ int nfs_try_get_tree(struct fs_context *); int nfs_get_tree_common(struct fs_context *); void nfs_kill_super(struct super_block *);
-extern struct rpc_stat nfs_rpcstat; - extern int __init register_nfs_fs(void); extern void __exit unregister_nfs_fs(void); extern bool nfs_sb_active(struct super_block *sb); diff --git a/fs/nfs/netns.h b/fs/nfs/netns.h index c8374f74dce1..a68b21603ea9 100644 --- a/fs/nfs/netns.h +++ b/fs/nfs/netns.h @@ -9,6 +9,7 @@ #include <linux/nfs4.h> #include <net/net_namespace.h> #include <net/netns/generic.h> +#include <linux/sunrpc/stats.h>
struct bl_dev_msg { int32_t status; @@ -34,6 +35,7 @@ struct nfs_net { struct nfs_netns_client *nfs_client; spinlock_t nfs_client_lock; ktime_t boot_time; + struct rpc_stat rpcstats; #ifdef CONFIG_PROC_FS struct proc_dir_entry *proc_nfsfs; #endif
From: Kuniyuki Iwashima kuniyu@amazon.com
stable inclusion from stable-v5.10.217 commit d4891d817350c67392d4731536945f3809a2a0ba category: bugfix bugzilla: https://gitee.com/src-openeuler/kernel/issues/I9W3QR CVE: CVE-2024-36939
Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=...
--------------------------------
[ Upstream commit 24457f1be29f1e7042e50a7749f5c2dde8c433c8 ]
syzkaller reported a warning [0] triggered while destroying immature netns.
rpc_proc_register() was called in init_nfs_fs(), but its error has been ignored since at least the initial commit 1da177e4c3f4 ("Linux-2.6.12-rc2").
Recently, commit d47151b79e32 ("nfs: expose /proc/net/sunrpc/nfs in net namespaces") converted the procfs to per-netns and made the problem more visible.
Even when rpc_proc_register() fails, nfs_net_init() could succeed, and thus nfs_net_exit() will be called while destroying the netns.
Then, remove_proc_entry() will be called for non-existing proc directory and trigger the warning below.
Let's handle the error of rpc_proc_register() properly in nfs_net_init().
[0]: name 'nfs' WARNING: CPU: 1 PID: 1710 at fs/proc/generic.c:711 remove_proc_entry+0x1bb/0x2d0 fs/proc/generic.c:711 Modules linked in: CPU: 1 PID: 1710 Comm: syz-executor.2 Not tainted 6.8.0-12822-gcd51db110a7e #12 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.0-0-gd239552ce722-prebuilt.qemu.org 04/01/2014 RIP: 0010:remove_proc_entry+0x1bb/0x2d0 fs/proc/generic.c:711 Code: 41 5d 41 5e c3 e8 85 09 b5 ff 48 c7 c7 88 58 64 86 e8 09 0e 71 02 e8 74 09 b5 ff 4c 89 e6 48 c7 c7 de 1b 80 84 e8 c5 ad 97 ff <0f> 0b eb b1 e8 5c 09 b5 ff 48 c7 c7 88 58 64 86 e8 e0 0d 71 02 eb RSP: 0018:ffffc9000c6d7ce0 EFLAGS: 00010286 RAX: 0000000000000000 RBX: ffff8880422b8b00 RCX: ffffffff8110503c RDX: ffff888030652f00 RSI: ffffffff81105045 RDI: 0000000000000001 RBP: 0000000000000000 R08: 0000000000000001 R09: 0000000000000000 R10: 0000000000000001 R11: ffffffff81bb62cb R12: ffffffff84807ffc R13: ffff88804ad6fcc0 R14: ffffffff84807ffc R15: ffffffff85741ff8 FS: 00007f30cfba8640(0000) GS:ffff88807dd00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007ff51afe8000 CR3: 000000005a60a005 CR4: 0000000000770ef0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 PKRU: 55555554 Call Trace: <TASK> rpc_proc_unregister+0x64/0x70 net/sunrpc/stats.c:310 nfs_net_exit+0x1c/0x30 fs/nfs/inode.c:2438 ops_exit_list+0x62/0xb0 net/core/net_namespace.c:170 setup_net+0x46c/0x660 net/core/net_namespace.c:372 copy_net_ns+0x244/0x590 net/core/net_namespace.c:505 create_new_namespaces+0x2ed/0x770 kernel/nsproxy.c:110 unshare_nsproxy_namespaces+0xae/0x160 kernel/nsproxy.c:228 ksys_unshare+0x342/0x760 kernel/fork.c:3322 __do_sys_unshare kernel/fork.c:3393 [inline] __se_sys_unshare kernel/fork.c:3391 [inline] __x64_sys_unshare+0x1f/0x30 kernel/fork.c:3391 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0x4f/0x110 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x46/0x4e RIP: 0033:0x7f30d0febe5d Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 73 9f 1b 00 f7 d8 64 89 01 48 RSP: 002b:00007f30cfba7cc8 EFLAGS: 00000246 ORIG_RAX: 0000000000000110 RAX: ffffffffffffffda RBX: 00000000004bbf80 RCX: 00007f30d0febe5d RDX: 0000000000000000 RSI: 0000000000000000 RDI: 000000006c020600 RBP: 00000000004bbf80 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002 R13: 000000000000000b R14: 00007f30d104c530 R15: 0000000000000000 </TASK>
Fixes: 1da177e4c3f4 ("Linux-2.6.12-rc2") Reported-by: syzkaller syzkaller@googlegroups.com Signed-off-by: Kuniyuki Iwashima kuniyu@amazon.com Signed-off-by: Trond Myklebust trond.myklebust@hammerspace.com Signed-off-by: Sasha Levin sashal@kernel.org Signed-off-by: Wang Zhaolong wangzhaolong1@huawei.com --- fs/nfs/inode.c | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-)
diff --git a/fs/nfs/inode.c b/fs/nfs/inode.c index 4ae50340c115..0d06ec25e21e 100644 --- a/fs/nfs/inode.c +++ b/fs/nfs/inode.c @@ -2228,7 +2228,12 @@ static int nfs_net_init(struct net *net) struct nfs_net *nn = net_generic(net, nfs_net_id);
nfs_clients_init(net); - rpc_proc_register(net, &nn->rpcstats); + + if (!rpc_proc_register(net, &nn->rpcstats)) { + nfs_clients_exit(net); + return -ENOMEM; + } + return nfs_fs_proc_net_init(net); }
hulk inclusion category: bugfix bugzilla: https://gitee.com/src-openeuler/kernel/issues/I9W3QR CVE: CVE-2022-48666
--------------------------------
Patch 2057a48d0dd0 ("sunrpc: add a struct rpc_stats arg to rpc_create_args"), the mainline fix for CVE-2022-48666,
Fix this by changing the kabi to use a reserved field.
Fixes: 71e2c70eb384 ("[Backport] sunrpc: add a struct rpc_stats arg to rpc_create_args") Signed-off-by: Wang Zhaolong wangzhaolong1@huawei.com --- include/linux/sunrpc/clnt.h | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-)
diff --git a/include/linux/sunrpc/clnt.h b/include/linux/sunrpc/clnt.h index 4648ae3f5bd2..28a7812e984e 100644 --- a/include/linux/sunrpc/clnt.h +++ b/include/linux/sunrpc/clnt.h @@ -134,7 +134,6 @@ struct rpc_create_args { const char *servername; const char *nodename; const struct rpc_program *program; - struct rpc_stat *stats; u32 prognumber; /* overrides program->number */ u32 version; rpc_authflavor_t authflavor; @@ -144,7 +143,7 @@ struct rpc_create_args { struct svc_xprt *bc_xprt; /* NFSv4.1 backchannel */ const struct cred *cred;
- KABI_RESERVE(1) + KABI_USE(1, struct rpc_stat *stats) };
struct rpc_add_xprt_test {
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