#syz test: https://github.com/google/kasan.git e17994d1 On Mon, Mar 23, 2020 at 8:40 PM syzbot <syzbot+37ba33391ad5f3935bbd@xxxxxxxxxxxxxxxxxxxxxxxxx> wrote: > > Hello, > > syzbot found the following crash on: > > HEAD commit: e17994d1 usb: core: kcov: collect coverage from usb comple.. > git tree: https://github.com/google/kasan.git usb-fuzzer > console output: https://syzkaller.appspot.com/x/log.txt?x=13706939e00000 > kernel config: https://syzkaller.appspot.com/x/.config?x=5d64370c438bc60 > dashboard link: https://syzkaller.appspot.com/bug?extid=37ba33391ad5f3935bbd > compiler: gcc (GCC) 9.0.0 20181231 (experimental) > syz repro: https://syzkaller.appspot.com/x/repro.syz?x=150d3841e00000 > C reproducer: https://syzkaller.appspot.com/x/repro.c?x=12842b19e00000 > > IMPORTANT: if you fix the bug, please add the following tag to the commit: > Reported-by: syzbot+37ba33391ad5f3935bbd@xxxxxxxxxxxxxxxxxxxxxxxxx > > ================================================================== > BUG: KASAN: slab-out-of-bounds in edge_interrupt_callback+0x8be/0x9d0 drivers/usb/serial/io_edgeport.c:715 > Read of size 1 at addr ffff8881d2920c67 by task swapper/0/0 > > CPU: 0 PID: 0 Comm: swapper/0 Not tainted 5.6.0-rc5-syzkaller #0 > Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 > Call Trace: > <IRQ> > __dump_stack lib/dump_stack.c:77 [inline] > dump_stack+0xef/0x16e lib/dump_stack.c:118 > print_address_description.constprop.0.cold+0xd3/0x314 mm/kasan/report.c:374 > __kasan_report.cold+0x37/0x77 mm/kasan/report.c:506 > kasan_report+0xe/0x20 mm/kasan/common.c:641 > edge_interrupt_callback+0x8be/0x9d0 drivers/usb/serial/io_edgeport.c:715 > __usb_hcd_giveback_urb+0x29a/0x550 drivers/usb/core/hcd.c:1650 > usb_hcd_giveback_urb+0x368/0x420 drivers/usb/core/hcd.c:1716 > dummy_timer+0x1258/0x32ae drivers/usb/gadget/udc/dummy_hcd.c:1966 > call_timer_fn+0x195/0x6f0 kernel/time/timer.c:1404 > > > --- > This bug 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 bug report. See: > https://goo.gl/tpsmEJ#status for how to communicate with syzbot. > syzbot can test patches for this bug, for details see: > https://goo.gl/tpsmEJ#testing-patches
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0003-USB-io_edgeport-fix-slab-out-of-bounds-Read-in-edge_.patch
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