"KMSAN: uninit-value in rt2500usb_bbp_read" and "KMSAN: uninit-value in rt2500usb_probe_hw" should be duplicate crash reports

2021-01-21 Thread 慕冬亮
Dear kernel developers, I found that on the syzbot dashboard, “KMSAN: uninit-value in rt2500usb_bbp_read” [1] and "KMSAN: uninit-value in rt2500usb_probe_hw" [2] should share the same root cause. ## Duplication The reasons for the above statement: 1) The PoCs are exactly the same

Re: "KMSAN: uninit-value in rt2500usb_bbp_read" and "KMSAN: uninit-value in rt2500usb_probe_hw" should be duplicate crash reports

2021-01-21 Thread Greg KH
On Thu, Jan 21, 2021 at 04:47:37PM +0800, 慕冬亮 wrote: > Dear kernel developers, > > I found that on the syzbot dashboard, “KMSAN: uninit-value in > rt2500usb_bbp_read” [1] and "KMSAN: uninit-value in > rt2500usb_probe_hw" [2] should share the same root cause. > >

Re: "KMSAN: uninit-value in rt2500usb_bbp_read" and "KMSAN: uninit-value in rt2500usb_probe_hw" should be duplicate crash reports

2021-01-21 Thread Stanislaw Gruszka
On Thu, Jan 21, 2021 at 04:47:37PM +0800, 慕冬亮 wrote: > ## Patch > > I propose to memset reg variable before invoking > rt2x00usb_vendor_req_buff_lock/rt2x00usb_vendor_request_buff. > >

Re: "KMSAN: uninit-value in rt2500usb_bbp_read" and "KMSAN: uninit-value in rt2500usb_probe_hw" should be duplicate crash reports

2021-01-21 Thread 慕冬亮
On Thu, Jan 21, 2021 at 4:52 PM Greg KH wrote: > > On Thu, Jan 21, 2021 at 04:47:37PM +0800, 慕冬亮 wrote: > > Dear kernel developers, > > > > I found that on the syzbot dashboard, “KMSAN: uninit-value in > > rt2500usb_bbp_read” [1] and "KMSAN: uninit-value in

Re: KMSAN: uninit-value in rt2500usb_bbp_read

2019-06-06 Thread Alexander Potapenko
b_register_read_lock() ignores that status code and just assumes the data is always initialized. > == > BUG: KMSAN: uninit-value in rt2500usb_regbusy_read > drivers/net/wireless/ralink/rt2x00/rt2500usb.c:116 [inline] >

KMSAN: uninit-value in rt2500usb_bbp_read

2019-06-06 Thread syzbot
== BUG: KMSAN: uninit-value in rt2500usb_regbusy_read drivers/net/wireless/ralink/rt2x00/rt2500usb.c:116 [inline] BUG: KMSAN: uninit-value in rt2500usb_bbp_read+0x174/0x640 drivers/net/wireless/ralink/rt2x00/rt2500usb.c:172 CPU: 1 PID: 4943