diff options
| author | Wang Hai <wanghai38@huawei.com> | 2021-10-25 21:10:12 +0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2022-01-27 09:00:48 +0100 |
| commit | f031637eb96cb16705dcae5117306a317a596d21 (patch) | |
| tree | fcc4cdf34cc231b11054e589acc2c3f8c10cb309 /net/bluetooth | |
| parent | b86b8fa8a134aec2d0a3e3645e55f0470865ca6c (diff) | |
| download | linux-rt-f031637eb96cb16705dcae5117306a317a596d21.tar.gz | |
Bluetooth: cmtp: fix possible panic when cmtp_init_sockets() fails
[ Upstream commit 2a7ca7459d905febf519163bd9e3eed894de6bb7 ]
I got a kernel BUG report when doing fault injection test:
------------[ cut here ]------------
kernel BUG at lib/list_debug.c:45!
...
RIP: 0010:__list_del_entry_valid.cold+0x12/0x4d
...
Call Trace:
proto_unregister+0x83/0x220
cmtp_cleanup_sockets+0x37/0x40 [cmtp]
cmtp_exit+0xe/0x1f [cmtp]
do_syscall_64+0x35/0xb0
entry_SYSCALL_64_after_hwframe+0x44/0xae
If cmtp_init_sockets() in cmtp_init() fails, cmtp_init() still returns
success. This will cause a kernel bug when accessing uncreated ctmp
related data when the module exits.
Fixes: 1da177e4c3f4 ("Linux-2.6.12-rc2")
Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: Wang Hai <wanghai38@huawei.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'net/bluetooth')
| -rw-r--r-- | net/bluetooth/cmtp/core.c | 4 |
1 files changed, 1 insertions, 3 deletions
diff --git a/net/bluetooth/cmtp/core.c b/net/bluetooth/cmtp/core.c index 9873684a9d8f..4764ed73f33b 100644 --- a/net/bluetooth/cmtp/core.c +++ b/net/bluetooth/cmtp/core.c @@ -499,9 +499,7 @@ static int __init cmtp_init(void) { BT_INFO("CMTP (CAPI Emulation) ver %s", VERSION); - cmtp_init_sockets(); - - return 0; + return cmtp_init_sockets(); } static void __exit cmtp_exit(void) |