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* Re: general protection fault in usb_set_interface
  2019-09-16 13:29 syzbot
@ 2019-12-13 12:15 Andrey Konovalov
  2019-12-13 12:16 ` syzbot
  0 siblings, 1 reply; 21+ messages in thread
From: Andrey Konovalov @ 2019-12-13 12:15 UTC (permalink / raw)
  To: syzbot, Alan Stern
  Cc: Greg Kroah-Hartman, Kai Heng Feng, LKML, USB list, mans,
	Oliver Neukum, syzkaller-bugs

[-- Attachment #1: Type: text/plain, Size: 5135 bytes --]

On Mon, Sep 16, 2019 at 3:29 PM syzbot
<syzbot+7fa38a608b1075dfd634@syzkaller.appspotmail.com> wrote:
>
> 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=158b66f1600000
> kernel config:  https://syzkaller.appspot.com/x/.config?x=5c6633fa4ed00be5
> dashboard link: https://syzkaller.appspot.com/bug?extid=7fa38a608b1075dfd634
> compiler:       gcc (GCC) 9.0.0 20181231 (experimental)
> syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=14f57db9600000
> C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=127b61a5600000
>
> IMPORTANT: if you fix the bug, please add the following tag to the commit:
> Reported-by: syzbot+7fa38a608b1075dfd634@syzkaller.appspotmail.com
>
> usb 3-1: usbvision_write_reg: failed: error -2
> usbvision_set_audio: can't write iopin register for audio switching
> 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: 1 PID: 1955 Comm: v4l_id Not tainted 5.3.0-rc7+ #0
> Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS
> Google 01/01/2011
> RIP: 0010:usb_set_interface+0x34/0xa50 drivers/usb/core/message.c:1362
> Code: fc 55 53 48 83 ec 40 89 54 24 18 89 74 24 10 e8 22 1c ef fd 49 8d 7c
> 24 48 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f
> 85 fb 08 00 00 49 8b 44 24 48 49 8d 7c 24 18 48 89
> RSP: 0018:ffff8881cb19fd50 EFLAGS: 00010206
> RAX: dffffc0000000000 RBX: 0000000000000000 RCX: 0000000000000000
> RDX: 0000000000000009 RSI: ffffffff834ebe7e RDI: 0000000000000048
> RBP: ffff8881cb8e4200 R08: ffffffff88d21878 R09: ffffed103971cb43
> R10: ffff8881cb19fdc8 R11: ffff8881cb8e5a17 R12: 0000000000000000
> R13: ffff8881cb8e5a10 R14: ffff8881cb8e4cc8 R15: ffff8881cb8e5178
> FS:  00007f4f60b6d700(0000) GS:ffff8881db300000(0000) knlGS:0000000000000000
> CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
> CR2: 00007f4f6060c330 CR3: 00000001cc3a8000 CR4: 00000000001406e0
> DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
> DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
> Call Trace:
>   usbvision_radio_close+0x105/0x250
> drivers/media/usb/usbvision/usbvision-video.c:1114
>   v4l2_release+0x2e7/0x390 drivers/media/v4l2-core/v4l2-dev.c:455
>   __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: 0033:0x7f4f6069b2b0
> Code: 40 75 0b 31 c0 48 83 c4 08 e9 0c ff ff ff 48 8d 3d c5 32 08 00 e8 c0
> 07 02 00 83 3d 45 a3 2b 00 00 75 10 b8 03 00 00 00 0f 05 <48> 3d 01 f0 ff
> ff 73 31 c3 48 83 ec 08 e8 ce 8a 01 00 48 89 04 24
> RSP: 002b:00007ffde2d50ee8 EFLAGS: 00000246 ORIG_RAX: 0000000000000003
> RAX: 0000000000000000 RBX: 0000000000000003 RCX: 00007f4f6069b2b0
> RDX: 00007f4f60951df0 RSI: 0000000000000001 RDI: 0000000000000003
> RBP: 0000000000000000 R08: 00007f4f60951df0 R09: 000000000000000a
> R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000400884
> R13: 00007ffde2d51040 R14: 0000000000000000 R15: 0000000000000000
> Modules linked in:
> ---[ end trace 62bd2b7512ab49ee ]---
> RIP: 0010:usb_set_interface+0x34/0xa50 drivers/usb/core/message.c:1362
> Code: fc 55 53 48 83 ec 40 89 54 24 18 89 74 24 10 e8 22 1c ef fd 49 8d 7c
> 24 48 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f
> 85 fb 08 00 00 49 8b 44 24 48 49 8d 7c 24 18 48 89
> RSP: 0018:ffff8881cb19fd50 EFLAGS: 00010206
> RAX: dffffc0000000000 RBX: 0000000000000000 RCX: 0000000000000000
> RDX: 0000000000000009 RSI: ffffffff834ebe7e RDI: 0000000000000048
> RBP: ffff8881cb8e4200 R08: ffffffff88d21878 R09: ffffed103971cb43
> R10: ffff8881cb19fdc8 R11: ffff8881cb8e5a17 R12: 0000000000000000
> R13: ffff8881cb8e5a10 R14: ffff8881cb8e4cc8 R15: ffff8881cb8e5178
> FS:  00007f4f60b6d700(0000) GS:ffff8881db300000(0000) knlGS:0000000000000000
> CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
> CR2: 00007f4f6060c330 CR3: 00000001cc3a8000 CR4: 00000000001406e0
> 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@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

Let's retry here:

#syz test: https://github.com/google/kasan.git f0df5c1b

[-- Attachment #2: usbvision.patch --]
[-- Type: text/x-patch, Size: 1357 bytes --]

Index: usb-devel/drivers/media/usb/usbvision/usbvision-video.c
===================================================================
--- usb-devel.orig/drivers/media/usb/usbvision/usbvision-video.c
+++ usb-devel/drivers/media/usb/usbvision/usbvision-video.c
@@ -49,6 +49,7 @@
 #include <media/tuner.h>
 
 #include <linux/workqueue.h>
+#include <linux/delay.h>
 
 #include "usbvision.h"
 #include "usbvision-cards.h"
@@ -1585,6 +1586,7 @@ static void usbvision_disconnect(struct
 		wake_up_interruptible(&usbvision->wait_frame);
 		wake_up_interruptible(&usbvision->wait_stream);
 	} else {
+		msleep(100);
 		usbvision_release(usbvision);
 	}
 
Index: usb-devel/drivers/media/v4l2-core/v4l2-dev.c
===================================================================
--- usb-devel.orig/drivers/media/v4l2-core/v4l2-dev.c
+++ usb-devel/drivers/media/v4l2-core/v4l2-dev.c
@@ -24,6 +24,7 @@
 #include <linux/kmod.h>
 #include <linux/slab.h>
 #include <linux/uaccess.h>
+#include <linux/delay.h>
 
 #include <media/v4l2-common.h>
 #include <media/v4l2-device.h>
@@ -419,9 +420,10 @@ static int v4l2_open(struct inode *inode
 	video_get(vdev);
 	mutex_unlock(&videodev_lock);
 	if (vdev->fops->open) {
-		if (video_is_registered(vdev))
+		if (video_is_registered(vdev)) {
+			msleep(200);
 			ret = vdev->fops->open(filp);
-		else
+		} else
 			ret = -ENODEV;
 	}
 

^ permalink raw reply	[flat|nested] 21+ messages in thread
* general protection fault in usb_set_interface
@ 2019-09-16 13:29 syzbot
  2019-09-16 20:51 ` Alan Stern
  0 siblings, 1 reply; 21+ messages in thread
From: syzbot @ 2019-09-16 13:29 UTC (permalink / raw)
  To: andreyknvl, gregkh, kai.heng.feng, linux-kernel, linux-usb, mans,
	oneukum, stern, syzkaller-bugs

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=158b66f1600000
kernel config:  https://syzkaller.appspot.com/x/.config?x=5c6633fa4ed00be5
dashboard link: https://syzkaller.appspot.com/bug?extid=7fa38a608b1075dfd634
compiler:       gcc (GCC) 9.0.0 20181231 (experimental)
syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=14f57db9600000
C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=127b61a5600000

IMPORTANT: if you fix the bug, please add the following tag to the commit:
Reported-by: syzbot+7fa38a608b1075dfd634@syzkaller.appspotmail.com

usb 3-1: usbvision_write_reg: failed: error -2
usbvision_set_audio: can't write iopin register for audio switching
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: 1 PID: 1955 Comm: v4l_id Not tainted 5.3.0-rc7+ #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS  
Google 01/01/2011
RIP: 0010:usb_set_interface+0x34/0xa50 drivers/usb/core/message.c:1362
Code: fc 55 53 48 83 ec 40 89 54 24 18 89 74 24 10 e8 22 1c ef fd 49 8d 7c  
24 48 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f  
85 fb 08 00 00 49 8b 44 24 48 49 8d 7c 24 18 48 89
RSP: 0018:ffff8881cb19fd50 EFLAGS: 00010206
RAX: dffffc0000000000 RBX: 0000000000000000 RCX: 0000000000000000
RDX: 0000000000000009 RSI: ffffffff834ebe7e RDI: 0000000000000048
RBP: ffff8881cb8e4200 R08: ffffffff88d21878 R09: ffffed103971cb43
R10: ffff8881cb19fdc8 R11: ffff8881cb8e5a17 R12: 0000000000000000
R13: ffff8881cb8e5a10 R14: ffff8881cb8e4cc8 R15: ffff8881cb8e5178
FS:  00007f4f60b6d700(0000) GS:ffff8881db300000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f4f6060c330 CR3: 00000001cc3a8000 CR4: 00000000001406e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
  usbvision_radio_close+0x105/0x250  
drivers/media/usb/usbvision/usbvision-video.c:1114
  v4l2_release+0x2e7/0x390 drivers/media/v4l2-core/v4l2-dev.c:455
  __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: 0033:0x7f4f6069b2b0
Code: 40 75 0b 31 c0 48 83 c4 08 e9 0c ff ff ff 48 8d 3d c5 32 08 00 e8 c0  
07 02 00 83 3d 45 a3 2b 00 00 75 10 b8 03 00 00 00 0f 05 <48> 3d 01 f0 ff  
ff 73 31 c3 48 83 ec 08 e8 ce 8a 01 00 48 89 04 24
RSP: 002b:00007ffde2d50ee8 EFLAGS: 00000246 ORIG_RAX: 0000000000000003
RAX: 0000000000000000 RBX: 0000000000000003 RCX: 00007f4f6069b2b0
RDX: 00007f4f60951df0 RSI: 0000000000000001 RDI: 0000000000000003
RBP: 0000000000000000 R08: 00007f4f60951df0 R09: 000000000000000a
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000400884
R13: 00007ffde2d51040 R14: 0000000000000000 R15: 0000000000000000
Modules linked in:
---[ end trace 62bd2b7512ab49ee ]---
RIP: 0010:usb_set_interface+0x34/0xa50 drivers/usb/core/message.c:1362
Code: fc 55 53 48 83 ec 40 89 54 24 18 89 74 24 10 e8 22 1c ef fd 49 8d 7c  
24 48 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f  
85 fb 08 00 00 49 8b 44 24 48 49 8d 7c 24 18 48 89
RSP: 0018:ffff8881cb19fd50 EFLAGS: 00010206
RAX: dffffc0000000000 RBX: 0000000000000000 RCX: 0000000000000000
RDX: 0000000000000009 RSI: ffffffff834ebe7e RDI: 0000000000000048
RBP: ffff8881cb8e4200 R08: ffffffff88d21878 R09: ffffed103971cb43
R10: ffff8881cb19fdc8 R11: ffff8881cb8e5a17 R12: 0000000000000000
R13: ffff8881cb8e5a10 R14: ffff8881cb8e4cc8 R15: ffff8881cb8e5178
FS:  00007f4f60b6d700(0000) GS:ffff8881db300000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f4f6060c330 CR3: 00000001cc3a8000 CR4: 00000000001406e0
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@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

^ permalink raw reply	[flat|nested] 21+ messages in thread

end of thread, back to index

Thread overview: 21+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2019-12-13 12:15 general protection fault in usb_set_interface Andrey Konovalov
2019-12-13 12:16 ` syzbot
2019-12-13 12:19   ` Andrey Konovalov
2019-12-13 19:51     ` Alan Stern
2019-12-16 14:59       ` Andrey Konovalov
2019-12-16 15:05         ` Alan Stern
2019-12-16 15:24           ` Andrey Konovalov
2019-12-17 13:17           ` Dmitry Vyukov
  -- strict thread matches above, loose matches on Subject: below --
2019-09-16 13:29 syzbot
2019-09-16 20:51 ` Alan Stern
2019-09-16 21:03   ` syzbot
2019-09-17 15:16     ` Alan Stern
2019-09-17 15:28       ` syzbot
2019-09-17 15:53         ` Alan Stern
2019-09-17 16:06           ` syzbot
2019-09-17 17:36             ` Alan Stern
2019-09-17 18:08               ` Alan Stern
2019-09-17 18:15                 ` syzbot
2019-09-17 18:31                   ` Alan Stern
2019-09-17 18:43                     ` syzbot
2019-09-18 18:57                       ` Alan Stern
2019-09-19 15:19                         ` Andrey Konovalov

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