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authorShyam Prasad N <sprasad@microsoft.com>2022-12-22 15:54:44 +0300
committerSteve French <stfrench@microsoft.com>2023-01-05 08:18:07 +0300
commitcc7d79d4fad6a4eab3f88c4bb237de72be4478f1 (patch)
tree756ec621cdb7b782ddb000d4df6710ab3a28ac16 /fs
parent7246210ecdd0cda97fa3e3bb15c32c6c2d9a23b5 (diff)
downloadlinux-cc7d79d4fad6a4eab3f88c4bb237de72be4478f1.tar.xz
cifs: fix interface count calculation during refresh
The last fix to iface_count did fix the overcounting issue. However, during each refresh, we could end up undercounting the iface_count, if a match was found. Fixing this by doing increments and decrements instead of setting it to 0 before each parsing of server interfaces. Fixes: 096bbeec7bd6 ("smb3: interface count displayed incorrectly") Cc: stable@vger.kernel.org # 6.1 Signed-off-by: Shyam Prasad N <sprasad@microsoft.com> Reviewed-by: Paulo Alcantara (SUSE) <pc@cjr.nz> Signed-off-by: Steve French <stfrench@microsoft.com>
Diffstat (limited to 'fs')
-rw-r--r--fs/cifs/smb2ops.c3
1 files changed, 2 insertions, 1 deletions
diff --git a/fs/cifs/smb2ops.c b/fs/cifs/smb2ops.c
index 0d7e9bcd9f34..e6bcd2baf446 100644
--- a/fs/cifs/smb2ops.c
+++ b/fs/cifs/smb2ops.c
@@ -530,7 +530,6 @@ parse_server_interfaces(struct network_interface_info_ioctl_rsp *buf,
p = buf;
spin_lock(&ses->iface_lock);
- ses->iface_count = 0;
/*
* Go through iface_list and do kref_put to remove
* any unused ifaces. ifaces in use will be removed
@@ -540,6 +539,7 @@ parse_server_interfaces(struct network_interface_info_ioctl_rsp *buf,
iface_head) {
iface->is_active = 0;
kref_put(&iface->refcount, release_iface);
+ ses->iface_count--;
}
spin_unlock(&ses->iface_lock);
@@ -618,6 +618,7 @@ parse_server_interfaces(struct network_interface_info_ioctl_rsp *buf,
/* just get a ref so that it doesn't get picked/freed */
iface->is_active = 1;
kref_get(&iface->refcount);
+ ses->iface_count++;
spin_unlock(&ses->iface_lock);
goto next_iface;
} else if (ret < 0) {