From: syzbot <syzbot+cabfa4b5b05ff6be4ef0@syzkaller.appspotmail.com>
To: andreyknvl@google.com, hverkuil-cisco@xs4all.nl,
linux-kernel@vger.kernel.org, linux-media@vger.kernel.org,
linux-usb@vger.kernel.org, mchehab@kernel.org,
syzkaller-bugs@googlegroups.com
Subject: Re: general protection fault in go7007_usb_probe
Date: Tue, 21 Apr 2020 16:45:17 -0700 [thread overview]
Message-ID: <000000000000a0f56c05a3d59b69@google.com> (raw)
In-Reply-To: <0000000000003cbf8e05a3d57b98@google.com>
syzbot has found a reproducer for the following crash on:
HEAD commit: e9010320 usb: cdns3: gadget: make a bunch of functions sta..
git tree: https://github.com/google/kasan.git usb-fuzzer
console output: https://syzkaller.appspot.com/x/log.txt?x=12da0b58100000
kernel config: https://syzkaller.appspot.com/x/.config?x=bd14feb44652cfaf
dashboard link: https://syzkaller.appspot.com/bug?extid=cabfa4b5b05ff6be4ef0
compiler: gcc (GCC) 9.0.0 20181231 (experimental)
syz repro: https://syzkaller.appspot.com/x/repro.syz?x=1146eb17e00000
C reproducer: https://syzkaller.appspot.com/x/repro.c?x=159d136fe00000
IMPORTANT: if you fix the bug, please add the following tag to the commit:
Reported-by: syzbot+cabfa4b5b05ff6be4ef0@syzkaller.appspotmail.com
usb 1-1: New USB device found, idVendor=0eb1, idProduct=7007, bcdDevice= 2.08
usb 1-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0
usb 1-1: config 0 descriptor??
usb 1-1: string descriptor 0 read error: -71
general protection fault, probably for non-canonical address 0xdffffc0000000000: 0000 [#1] SMP KASAN
KASAN: null-ptr-deref in range [0x0000000000000000-0x0000000000000007]
CPU: 0 PID: 12 Comm: kworker/0:1 Not tainted 5.7.0-rc1-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: usb_hub_wq hub_event
RIP: 0010:go7007_usb_probe+0x4ba/0x1d49 drivers/media/usb/go7007/go7007-usb.c:1145
Code: c1 ee 03 80 3c 0e 00 0f 85 59 16 00 00 4c 8b a2 e8 05 00 00 48 b9 00 00 00 00 00 fc ff df 49 8d 7c 24 03 48 89 fe 48 c1 ee 03 <0f> b6 0c 0e 48 89 fe 83 e6 07 40 38 f1 7f 08 84 c9 0f 85 11 16 00
RSP: 0018:ffff8881da21f190 EFLAGS: 00010246
RAX: ffff8881cd522800 RBX: ffff8881cd9de000 RCX: dffffc0000000000
RDX: ffff8881cd9dd000 RSI: 0000000000000000 RDI: 0000000000000003
RBP: ffff8881cd5ac000 R08: 0000000000000001 R09: fffffbfff1268ad6
R10: ffffffff893456af R11: fffffbfff1268ad5 R12: 0000000000000000
R13: ffff8881cd9dd0a0 R14: ffff8881cf81c800 R15: ffffffff86786240
FS: 0000000000000000(0000) GS:ffff8881db200000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055c401d2c160 CR3: 0000000007024000 CR4: 00000000001406f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
usb_probe_interface+0x310/0x800 drivers/usb/core/driver.c:374
really_probe+0x290/0xac0 drivers/base/dd.c:527
driver_probe_device+0x223/0x350 drivers/base/dd.c:701
__device_attach_driver+0x1d1/0x290 drivers/base/dd.c:808
bus_for_each_drv+0x162/0x1e0 drivers/base/bus.c:431
__device_attach+0x21a/0x390 drivers/base/dd.c:874
bus_probe_device+0x1e4/0x290 drivers/base/bus.c:491
device_add+0x1367/0x1c20 drivers/base/core.c:2533
usb_set_configuration+0xed4/0x1850 drivers/usb/core/message.c:2025
usb_generic_driver_probe+0x9d/0xe0 drivers/usb/core/generic.c:241
usb_probe_device+0xd9/0x230 drivers/usb/core/driver.c:272
really_probe+0x290/0xac0 drivers/base/dd.c:527
driver_probe_device+0x223/0x350 drivers/base/dd.c:701
__device_attach_driver+0x1d1/0x290 drivers/base/dd.c:808
bus_for_each_drv+0x162/0x1e0 drivers/base/bus.c:431
__device_attach+0x21a/0x390 drivers/base/dd.c:874
bus_probe_device+0x1e4/0x290 drivers/base/bus.c:491
device_add+0x1367/0x1c20 drivers/base/core.c:2533
usb_new_device.cold+0x540/0xcd0 drivers/usb/core/hub.c:2548
hub_port_connect drivers/usb/core/hub.c:5195 [inline]
hub_port_connect_change drivers/usb/core/hub.c:5335 [inline]
port_event drivers/usb/core/hub.c:5481 [inline]
hub_event+0x21cb/0x4300 drivers/usb/core/hub.c:5563
process_one_work+0x965/0x1630 kernel/workqueue.c:2268
worker_thread+0x96/0xe20 kernel/workqueue.c:2414
kthread+0x326/0x430 kernel/kthread.c:268
ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:352
Modules linked in:
---[ end trace 822665be1be4fef9 ]---
RIP: 0010:go7007_usb_probe+0x4ba/0x1d49 drivers/media/usb/go7007/go7007-usb.c:1145
Code: c1 ee 03 80 3c 0e 00 0f 85 59 16 00 00 4c 8b a2 e8 05 00 00 48 b9 00 00 00 00 00 fc ff df 49 8d 7c 24 03 48 89 fe 48 c1 ee 03 <0f> b6 0c 0e 48 89 fe 83 e6 07 40 38 f1 7f 08 84 c9 0f 85 11 16 00
RSP: 0018:ffff8881da21f190 EFLAGS: 00010246
RAX: ffff8881cd522800 RBX: ffff8881cd9de000 RCX: dffffc0000000000
RDX: ffff8881cd9dd000 RSI: 0000000000000000 RDI: 0000000000000003
RBP: ffff8881cd5ac000 R08: 0000000000000001 R09: fffffbfff1268ad6
R10: ffffffff893456af R11: fffffbfff1268ad5 R12: 0000000000000000
R13: ffff8881cd9dd0a0 R14: ffff8881cf81c800 R15: ffffffff86786240
FS: 0000000000000000(0000) GS:ffff8881db200000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055c401d2c160 CR3: 0000000007024000 CR4: 00000000001406f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
next prev parent reply other threads:[~2020-04-21 23:45 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-04-21 23:36 general protection fault in go7007_usb_probe syzbot
2020-04-21 23:45 ` syzbot [this message]
2020-04-22 10:32 ` Oliver Neukum
2020-04-22 10:51 ` Takashi Iwai
2020-04-22 11:59 ` Oliver Neukum
2020-04-22 12:32 ` syzbot
2020-04-23 11:01 ` Oliver Neukum
2020-04-23 11:20 ` syzbot
2020-04-23 12:46 ` Oliver Neukum
2020-04-23 13:05 ` syzbot
2020-04-23 13:48 ` Oliver Neukum
2020-04-23 13:59 ` syzbot
2020-04-30 13:09 ` Oliver Neukum
2020-04-30 13:29 ` syzbot
2020-05-04 14:08 ` Oliver Neukum
2020-05-04 14:27 ` syzbot
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=000000000000a0f56c05a3d59b69@google.com \
--to=syzbot+cabfa4b5b05ff6be4ef0@syzkaller.appspotmail.com \
--cc=andreyknvl@google.com \
--cc=hverkuil-cisco@xs4all.nl \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-media@vger.kernel.org \
--cc=linux-usb@vger.kernel.org \
--cc=mchehab@kernel.org \
--cc=syzkaller-bugs@googlegroups.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.