On Wed, Dec 18, 2019 at 3:45 PM syzbot <syzbot+00eaa791c74b27f5e7b1@xxxxxxxxxxxxxxxxxxxxxxxxx> wrote: > > Hello, > > syzbot found the following crash on: > > HEAD commit: d533c992 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=11e440aee00000 > kernel config: https://syzkaller.appspot.com/x/.config?x=743b91162e9f9496 > dashboard link: https://syzkaller.appspot.com/bug?extid=00eaa791c74b27f5e7b1 > compiler: gcc (GCC) 9.0.0 20181231 (experimental) > syz repro: https://syzkaller.appspot.com/x/repro.syz?x=1445d9fae00000 > C reproducer: https://syzkaller.appspot.com/x/repro.c?x=12557049e00000 > > IMPORTANT: if you fix the bug, please add the following tag to the commit: > Reported-by: syzbot+00eaa791c74b27f5e7b1@xxxxxxxxxxxxxxxxxxxxxxxxx > > ================================================================== > BUG: KASAN: slab-out-of-bounds in test_bit > include/asm-generic/bitops/instrumented-non-atomic.h:110 [inline] > BUG: KASAN: slab-out-of-bounds in hidinput_hid_event+0x1111/0x15d3 > drivers/hid/hid-input.c:1381 > Read of size 8 at addr ffff8881cf4d2cd0 by task swapper/1/0 > > CPU: 1 PID: 0 Comm: swapper/1 Not tainted 5.5.0-rc2-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+0x16/0x200 mm/kasan/report.c:374 > __kasan_report.cold+0x37/0x7f mm/kasan/report.c:506 > kasan_report+0xe/0x20 mm/kasan/common.c:639 > check_memory_region_inline mm/kasan/generic.c:185 [inline] > check_memory_region+0x152/0x1c0 mm/kasan/generic.c:192 > test_bit include/asm-generic/bitops/instrumented-non-atomic.h:110 [inline] > hidinput_hid_event+0x1111/0x15d3 drivers/hid/hid-input.c:1381 > hid_process_event+0x4a0/0x580 drivers/hid/hid-core.c:1506 > hid_input_field drivers/hid/hid-core.c:1550 [inline] > hid_report_raw_event+0xabb/0xed0 drivers/hid/hid-core.c:1757 > hid_input_report+0x315/0x3f0 drivers/hid/hid-core.c:1824 > hid_irq_in+0x50e/0x690 drivers/hid/usbhid/hid-core.c:284 > > > > --- > 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 #syz dup: KASAN: global-out-of-bounds Write in kbd_event
