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| author |   Zhang Xiaoxu <zhangxiaoxu5@huawei.com> | 2022-10-20 11:20:54 +0800 |
|---|---|---|
| committer |   Anna Schumaker <Anna.Schumaker@Netapp.com> | 2022-10-27 15:52:11 -0400 |
| commit | 7e8436728e22181c3f12a5dbabd35ed3a8b8c593 (patch) | |
| tree | 874eb14effb2dd6f69ae54b38043212115b7fbbc | |
| parent | NFSv4.2: Fixup CLONE dest file size for zero-length count (diff) | |
| download | linux-dev-7e8436728e22181c3f12a5dbabd35ed3a8b8c593.tar.xz linux-dev-7e8436728e22181c3f12a5dbabd35ed3a8b8c593.zip | |
nfs4: Fix kmemleak when allocate slot failed
If one of the slot allocate failed, should cleanup all the other
allocated slots, otherwise, the allocated slots will leak:
unreferenced object 0xffff8881115aa100 (size 64):
comm ""mount.nfs"", pid 679, jiffies 4294744957 (age 115.037s)
hex dump (first 32 bytes):
00 cc 19 73 81 88 ff ff 00 a0 5a 11 81 88 ff ff ...s......Z.....
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
backtrace:
[<000000007a4c434a>] nfs4_find_or_create_slot+0x8e/0x130
[<000000005472a39c>] nfs4_realloc_slot_table+0x23f/0x270
[<00000000cd8ca0eb>] nfs40_init_client+0x4a/0x90
[<00000000128486db>] nfs4_init_client+0xce/0x270
[<000000008d2cacad>] nfs4_set_client+0x1a2/0x2b0
[<000000000e593b52>] nfs4_create_server+0x300/0x5f0
[<00000000e4425dd2>] nfs4_try_get_tree+0x65/0x110
[<00000000d3a6176f>] vfs_get_tree+0x41/0xf0
[<0000000016b5ad4c>] path_mount+0x9b3/0xdd0
[<00000000494cae71>] __x64_sys_mount+0x190/0x1d0
[<000000005d56bdec>] do_syscall_64+0x35/0x80
[<00000000687c9ae4>] entry_SYSCALL_64_after_hwframe+0x46/0xb0
Fixes: abf79bb341bf ("NFS: Add a slot table to struct nfs_client for NFSv4.0 transport blocking")
Signed-off-by: Zhang Xiaoxu <zhangxiaoxu5@huawei.com>
Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
| -rw-r--r-- | fs/nfs/nfs4client.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/fs/nfs/nfs4client.c b/fs/nfs/nfs4client.c index 3b9b53481309..d3051b051a56 100644 --- a/fs/nfs/nfs4client.c +++ b/fs/nfs/nfs4client.c @@ -346,6 +346,7 @@ int nfs40_init_client(struct nfs_client *clp) ret = nfs4_setup_slot_table(tbl, NFS4_MAX_SLOT_TABLE, "NFSv4.0 transport Slot table"); if (ret) { + nfs4_shutdown_slot_table(tbl); kfree(tbl); return ret; } |