From mboxrd@z Thu Jan 1 00:00:00 1970 From: syzbot Subject: WARNING in implement Date: Mon, 16 Sep 2019 11:49:09 -0700 Message-ID: <0000000000002b27c60592b00f38@google.com> Mime-Version: 1.0 Content-Type: text/plain; charset="UTF-8"; format=flowed; delsp=yes Return-path: Sender: linux-kernel-owner@vger.kernel.org To: andreyknvl@google.com, benjamin.tissoires@redhat.com, jikos@kernel.org, linux-input@vger.kernel.org, linux-kernel@vger.kernel.org, linux-usb@vger.kernel.org, syzkaller-bugs@googlegroups.com List-Id: linux-input@vger.kernel.org Hello, syzbot found the following crash on: HEAD commit: f0df5c1b usb-fuzzer: main usb gadget fuzzer driver git tree: https://github.com/google/kasan.git usb-fuzzer console output: https://syzkaller.appspot.com/x/log.txt?x=170b213e600000 kernel config: https://syzkaller.appspot.com/x/.config?x=5c6633fa4ed00be5 dashboard link: https://syzkaller.appspot.com/bug?extid=38e7237add3712479d65 compiler: gcc (GCC) 9.0.0 20181231 (experimental) syz repro: https://syzkaller.appspot.com/x/repro.syz?x=16830dc1600000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=11f2d3fa600000 IMPORTANT: if you fix the bug, please add the following tag to the commit: Reported-by: syzbot+38e7237add3712479d65@syzkaller.appspotmail.com keytouch 0003:0926:3333.0001: implement() called with too large value 32769 (n: 1)! (kworker/0:1) ------------[ cut here ]------------ WARNING: CPU: 0 PID: 12 at drivers/hid/hid-core.c:1370 implement.cold+0x40/0x81 drivers/hid/hid-core.c:1370 Kernel panic - not syncing: panic_on_warn set ... CPU: 0 PID: 12 Comm: kworker/0:1 Not tainted 5.3.0-rc7+ #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Workqueue: events hidinput_led_worker Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0xca/0x13e lib/dump_stack.c:113 panic+0x2a3/0x6da kernel/panic.c:219 __warn.cold+0x20/0x4a kernel/panic.c:576 report_bug+0x262/0x2a0 lib/bug.c:186 fixup_bug arch/x86/kernel/traps.c:179 [inline] fixup_bug arch/x86/kernel/traps.c:174 [inline] do_error_trap+0x12b/0x1e0 arch/x86/kernel/traps.c:272 do_invalid_op+0x32/0x40 arch/x86/kernel/traps.c:291 invalid_op+0x23/0x30 arch/x86/entry/entry_64.S:1028 RIP: 0010:implement.cold+0x40/0x81 drivers/hid/hid-core.c:1370 Code: 00 ef 01 00 48 c7 c2 a0 ac 52 86 48 c7 c6 c0 8a 52 86 4c 8d 88 70 06 00 00 e8 3f 3b 1a fe 48 c7 c7 20 8b 52 86 e8 fc 4e d7 fc <0f> 0b 44 21 e5 e9 06 3a ff ff e8 64 ad ec fc 49 8d bd 28 19 00 00 RSP: 0018:ffff8881da20fb88 EFLAGS: 00010082 RAX: 0000000000000024 RBX: 0000000000000000 RCX: 0000000000000000 RDX: 0000000000000000 RSI: ffffffff81288ddd RDI: ffffed103b441f63 RBP: 0000000000008001 R08: 0000000000000024 R09: ffffed103b643ee7 R10: ffffed103b643ee6 R11: ffff8881db21f737 R12: 0000000000000001 R13: ffff8881d28d8000 R14: 0000000000000001 R15: 0000000000000001 hid_output_field drivers/hid/hid-core.c:1543 [inline] hid_output_report+0x2dc/0x4c0 drivers/hid/hid-core.c:1562 __usbhid_submit_report drivers/hid/usbhid/hid-core.c:593 [inline] usbhid_submit_report+0x65c/0xde0 drivers/hid/usbhid/hid-core.c:638 usbhid_request+0x3c/0x70 drivers/hid/usbhid/hid-core.c:1252 hidinput_led_worker+0xbd/0x360 drivers/hid/hid-input.c:1495 process_one_work+0x92b/0x1530 kernel/workqueue.c:2269 worker_thread+0x96/0xe20 kernel/workqueue.c:2415 kthread+0x318/0x420 kernel/kthread.c:255 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:352 Shutting down cpus with NMI Kernel Offset: disabled Rebooting in 86400 seconds.. --- 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@googlegroups.com. 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