Re: [PATCH v2] Bluetooth: cmtp: fix possible panic when cmtp_init_sockets() fails

Hi Wang,

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 <redacted>
Signed-off-by: Wang Hai <redacted>
---
v1->v2: remove the temporary variable "err"
net/bluetooth/cmtp/core.c | 4 +---
1 file changed, 1 insertion(+), 3 deletions(-)

patch has been applied to bluetooth-next tree.

Regards

Marcel