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Bluetooth: bnep: fix wild-memory-access in proto_unregister

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There's issue as follows:
  KASAN: maybe wild-memory-access in range [0xdead...108-0xdead...10f]
  CPU: 3 UID: 0 PID: 2805 Comm: rmmod Tainted: G        W
  RIP: 0010:proto_unregister+0xee/0x400
  Call Trace:
   <TASK>
   __do_sys_delete_module+0x318/0x580
   do_syscall_64+0xc1/0x1d0
   entry_SYSCALL_64_after_hwframe+0x77/0x7f

As bnep_init() ignore bnep_sock_init()'s return value, and bnep_sock_init()
will cleanup all resource. Then when remove bnep module will call
bnep_sock_cleanup() to cleanup sock's resource.
To solve above issue just return bnep_sock_init()'s return value in
bnep_exit().

Fixes: 1da177e4c3 ("Linux-2.6.12-rc2")
Signed-off-by: Ye Bin <yebin10@huawei.com>
Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>
This commit is contained in:
Ye Bin 2024-10-14 17:07:08 +08:00 committed by Luiz Augusto von Dentz
parent 4084286151
commit 64a90991ba
1 changed files with 1 additions and 2 deletions
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3
net/bluetooth/bnep/core.c
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@ -745,8 +745,7 @@ static int __init bnep_init(void)
if (flt[0])
BT_INFO("BNEP filters: %s", flt);
bnep_sock_init();
return 0;
return bnep_sock_init();
}
static void __exit bnep_exit(void)