https://bugzilla.kernel.org/show_bug.cgi?id=220052 --- Comment #2 from Ben (ben.maan@xxxxxxxxxxxxx) --- One of our customers complained about a kernel panic that occurs now and than after disconnecting a usb-cable. However, most of the disconnects are without a panic. After some investigation the panic shows up between 1 and 100 disconnect attempts. From the panic output can be seen that the acm_softint is one of the last functions on the stack . This function is first calling a usb_kill_urb that frees the urb memory but 2 lines further the allocated urb memory is still used in the acm_submit_read_urbs->acm_submit_read_urb. Exchanging the 2 lines as indicated in the patch solves the problem completely and the kernel panic is not seen anymore. This is proved by 7000 'virtual' disconnects. -- You may reply to this email to add a comment. You are receiving this mail because: You are watching the assignee of the bug.
