On Thu, 12 Nov 2020, syzbot wrote: > Hello, > > syzbot found the following issue on: CCing Jason and Ping, the maintainers of hid-wacom. > > HEAD commit: eccc8767 Merge branch 'fixes' of git://git.kernel.org/pub/.. > git tree: upstream > console output: https://syzkaller.appspot.com/x/log.txt?x=145055aa500000 > kernel config: https://syzkaller.appspot.com/x/.config?x=a3f13716fa0212fd > dashboard link: https://syzkaller.appspot.com/bug?extid=5b49c9695968d7250a26 > compiler: gcc (GCC) 10.1.0-syz 20200507 > syz repro: https://syzkaller.appspot.com/x/repro.syz?x=16339ad6500000 > C reproducer: https://syzkaller.appspot.com/x/repro.c?x=1409f511500000 > > IMPORTANT: if you fix the issue, please add the following tag to the commit: > Reported-by: syzbot+5b49c9695968d7250a26@xxxxxxxxxxxxxxxxxxxxxxxxx > > BUG: memory leak > unreferenced object 0xffff88810dc44a00 (size 512): > comm "kworker/1:2", pid 3674, jiffies 4294943617 (age 14.100s) > hex dump (first 32 bytes): > 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ > 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ > backtrace: > [<0000000023e1afac>] kmalloc_array include/linux/slab.h:592 [inline] > [<0000000023e1afac>] __kfifo_alloc+0xad/0x100 lib/kfifo.c:43 > [<00000000c477f737>] wacom_probe+0x1a1/0x3b0 drivers/hid/wacom_sys.c:2727 > [<00000000b3109aca>] hid_device_probe+0x16b/0x210 drivers/hid/hid-core.c:2281 > [<00000000aff7c640>] really_probe+0x159/0x480 drivers/base/dd.c:554 > [<00000000778d0bc3>] driver_probe_device+0x84/0x100 drivers/base/dd.c:738 > [<000000005108dbb5>] __device_attach_driver+0xee/0x110 drivers/base/dd.c:844 > [<00000000efb7c59e>] bus_for_each_drv+0xb7/0x100 drivers/base/bus.c:431 > [<0000000024ab1590>] __device_attach+0x122/0x250 drivers/base/dd.c:912 > [<000000004c7ac048>] bus_probe_device+0xc6/0xe0 drivers/base/bus.c:491 > [<00000000b93050a3>] device_add+0x5ac/0xc30 drivers/base/core.c:2936 > [<00000000e5b46ea5>] hid_add_device+0x151/0x390 drivers/hid/hid-core.c:2437 > [<00000000c6add147>] usbhid_probe+0x412/0x560 drivers/hid/usbhid/hid-core.c:1407 > [<00000000c33acdb4>] usb_probe_interface+0x177/0x370 drivers/usb/core/driver.c:396 > [<00000000aff7c640>] really_probe+0x159/0x480 drivers/base/dd.c:554 > [<00000000778d0bc3>] driver_probe_device+0x84/0x100 drivers/base/dd.c:738 > [<000000005108dbb5>] __device_attach_driver+0xee/0x110 drivers/base/dd.c:844 > > > > --- > This report is generated by a bot. It may contain errors. > See https://goo.gl/tpsmEJ for more information about syzbot. > syzbot engineers can be reached at syzkaller@xxxxxxxxxxxxxxxx. > > syzbot will keep track of this issue. See: > https://goo.gl/tpsmEJ#status for how to communicate with syzbot. > syzbot can test patches for this issue, for details see: > https://goo.gl/tpsmEJ#testing-patches > -- Jiri Kosina SUSE Labs
