linux-kernel - Re: general protection fault in usb_autopm_put

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Message-ID: <CAAeHK+yXq+RsFfVGomryRv2nDBTUqN_kbKB26e18GGwnAXkmbA@mail.gmail.com>
Date:   Tue, 3 Sep 2019 14:12:21 +0200
From:   Andrey Konovalov <andreyknvl@...gle.com>
To:     syzbot <syzbot+3b6d4df4497100308c69@...kaller.appspotmail.com>
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Kai Heng Feng <kai.heng.feng@...onical.com>,
        LKML <linux-kernel@...r.kernel.org>,
        USB list <linux-usb@...r.kernel.org>,
        Alan Stern <stern@...land.harvard.edu>,
        syzkaller-bugs <syzkaller-bugs@...glegroups.com>,
        yuehaibing@...wei.com
Subject: Re: general protection fault in usb_autopm_put_interface

On Tue, Sep 3, 2019 at 2:08 PM syzbot
<syzbot+3b6d4df4497100308c69@...kaller.appspotmail.com> wrote:
>
> Hello,
>
> syzbot found the following crash on:
>
> HEAD commit:    eea39f24 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=165e551e600000
> kernel config:  https://syzkaller.appspot.com/x/.config?x=d0c62209eedfd54e
> dashboard link: https://syzkaller.appspot.com/bug?extid=3b6d4df4497100308c69
> compiler:       gcc (GCC) 9.0.0 20181231 (experimental)
>
> Unfortunately, I don't have any reproducer for this crash yet.
>
> IMPORTANT: if you fix the bug, please add the following tag to the commit:
> Reported-by: syzbot+3b6d4df4497100308c69@...kaller.appspotmail.com
>
> kasan: CONFIG_KASAN_INLINE enabled
> kasan: GPF could be caused by NULL-ptr deref or user memory access
> general protection fault: 0000 [#1] SMP KASAN
> CPU: 0 PID: 8426 Comm: syz-executor.3 Not tainted 5.3.0-rc5+ #28
> Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS
> Google 01/01/2011
> RIP: 0010:usb_autopm_put_interface+0x23/0x90 drivers/usb/core/driver.c:1629
> Code: 1f 84 00 00 00 00 00 55 53 48 89 fb 48 83 ec 08 e8 b2 fa ee fd 48 8d
> 7b 70 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 <80> 3c 02 00 75
> 42 48 8b 6b 70 e8 6e ec e0 fd 48 ba 00 00 00 00 00
> RSP: 0018:ffff8881cf9e7d98 EFLAGS: 00010202
> RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffffff84633936
> RDX: 000000000000000e RSI: ffffffff834edf2e RDI: 0000000000000070
> RBP: ffff8881ca020000 R08: ffff8881c7ec0000 R09: ffffed10398ed3bb
> R10: ffffed10398ed3ba R11: ffff8881cc769dd7 R12: 0000000000000000
> R13: ffffffff89a84fe8 R14: 0000000000000246 R15: ffff8881c7e13718
> FS:  0000555556d07940(0000) GS:ffff8881db200000(0000) knlGS:0000000000000000
> CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
> CR2: 0000001b2ff21000 CR3: 00000001d3e92000 CR4: 00000000001406f0
> DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
> DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
> Call Trace:
>   usbhid_power+0xb8/0xe0 drivers/hid/usbhid/hid-core.c:1238
>   hid_hw_power include/linux/hid.h:1038 [inline]
>   drop_ref.part.0+0xa5/0xe0 drivers/hid/hidraw.c:338
>   drop_ref drivers/hid/hidraw.c:360 [inline]
>   hidraw_release+0x34f/0x440 drivers/hid/hidraw.c:356
>   __fput+0x2d7/0x840 fs/file_table.c:280
>   task_work_run+0x13f/0x1c0 kernel/task_work.c:113
>   tracehook_notify_resume include/linux/tracehook.h:188 [inline]
>   exit_to_usermode_loop+0x1d2/0x200 arch/x86/entry/common.c:163
>   prepare_exit_to_usermode arch/x86/entry/common.c:194 [inline]
>   syscall_return_slowpath arch/x86/entry/common.c:274 [inline]
>   do_syscall_64+0x45f/0x580 arch/x86/entry/common.c:299
>   entry_SYSCALL_64_after_hwframe+0x49/0xbe
> RIP: 0033:0x413561
> Code: 75 14 b8 03 00 00 00 0f 05 48 3d 01 f0 ff ff 0f 83 04 1b 00 00 c3 48
> 83 ec 08 e8 0a fc ff ff 48 89 04 24 b8 03 00 00 00 0f 05 <48> 8b 3c 24 48
> 89 c2 e8 53 fc ff ff 48 89 d0 48 83 c4 08 48 3d 01
> RSP: 002b:00007ffd906f2400 EFLAGS: 00000293 ORIG_RAX: 0000000000000003
> RAX: 0000000000000000 RBX: 0000000000000005 RCX: 0000000000413561
> RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000004
> RBP: 0000000000000001 R08: 0000000055395a94 R09: 0000000055395a98
> R10: 00007ffd906f24e0 R11: 0000000000000293 R12: 000000000075bf20
> R13: 000000000006c6a9 R14: 0000000000764788 R15: ffffffffffffffff
> Modules linked in:
> ---[ end trace 4e657ab43d479d9c ]---
> RIP: 0010:usb_autopm_put_interface+0x23/0x90 drivers/usb/core/driver.c:1629
> Code: 1f 84 00 00 00 00 00 55 53 48 89 fb 48 83 ec 08 e8 b2 fa ee fd 48 8d
> 7b 70 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 <80> 3c 02 00 75
> 42 48 8b 6b 70 e8 6e ec e0 fd 48 ba 00 00 00 00 00
> RSP: 0018:ffff8881cf9e7d98 EFLAGS: 00010202
> RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffffff84633936
> RDX: 000000000000000e RSI: ffffffff834edf2e RDI: 0000000000000070
> RBP: ffff8881ca020000 R08: ffff8881c7ec0000 R09: ffffed10398ed3bb
> R10: ffffed10398ed3ba R11: ffff8881cc769dd7 R12: 0000000000000000
> R13: ffffffff89a84fe8 R14: 0000000000000246 R15: ffff8881c7e13718
> FS:  0000555556d07940(0000) GS:ffff8881db200000(0000) knlGS:0000000000000000
> CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
> CR2: 0000001b2ff21000 CR3: 00000001d3e92000 CR4: 00000000001406f0
> DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
> DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
>
>
> ---
> 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@...glegroups.com.
>
> syzbot will keep track of this bug report. See:
> https://goo.gl/tpsmEJ#status for how to communicate with syzbot.

#syz dup: general protection fault in __pm_runtime_resume