From: syzbot <syzbot+d3dbdf31fbe9d8f5f311@syzkaller.appspotmail.com>
To: arnd@arndb.de, dan.carpenter@oracle.com, davem@davemloft.net,
glider@google.com, jackychou@asix.com.tw, jannh@google.com,
jgg@ziepe.ca, k.kahurani@gmail.com, kbuild-all@lists.01.org,
kuba@kernel.org, linux-kernel@vger.kernel.org,
linux-usb@vger.kernel.org, lkp@intel.com, netdev@vger.kernel.org,
pabeni@redhat.com, paskripkin@gmail.com, phil@philpotter.co.uk,
syzkaller-bugs@googlegroups.com
Subject: Re: [syzbot] KMSAN: uninit-value in ax88179_led_setting
Date: Wed, 06 Apr 2022 19:41:21 -0700 [thread overview]
Message-ID: <000000000000d27e6705dc07698c@google.com> (raw)
In-Reply-To: <000000000000d56a0305d80c2f2b@google.com>
syzbot has found a reproducer for the following issue on:
HEAD commit: 33d9269ef6e0 Revert "kernel: kmsan: don't instrument stack..
git tree: https://github.com/google/kmsan.git master
console output: https://syzkaller.appspot.com/x/log.txt?x=158ddbcf700000
kernel config: https://syzkaller.appspot.com/x/.config?x=d830111cc3be873
dashboard link: https://syzkaller.appspot.com/bug?extid=d3dbdf31fbe9d8f5f311
compiler: clang version 14.0.0 (/usr/local/google/src/llvm-git-monorepo 2b554920f11c8b763cd9ed9003f4e19b919b8e1f), GNU ld (GNU Binutils for Debian) 2.35.2
syz repro: https://syzkaller.appspot.com/x/repro.syz?x=146e3dc3700000
IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+d3dbdf31fbe9d8f5f311@syzkaller.appspotmail.com
ax88179_178a 2-1:0.252 (unnamed net_device) (uninitialized): Failed to read reg index 0x0001: -71
ax88179_178a 2-1:0.252 (unnamed net_device) (uninitialized): Failed to read reg index 0x0002: -71
=====================================================
BUG: KMSAN: uninit-value in ax88179_check_eeprom drivers/net/usb/ax88179_178a.c:1074 [inline]
BUG: KMSAN: uninit-value in ax88179_led_setting+0x884/0x30b0 drivers/net/usb/ax88179_178a.c:1168
ax88179_check_eeprom drivers/net/usb/ax88179_178a.c:1074 [inline]
ax88179_led_setting+0x884/0x30b0 drivers/net/usb/ax88179_178a.c:1168
ax88179_bind+0xf00/0x1a50 drivers/net/usb/ax88179_178a.c:1412
usbnet_probe+0x1251/0x4160 drivers/net/usb/usbnet.c:1747
usb_probe_interface+0xf19/0x1600 drivers/usb/core/driver.c:396
really_probe+0x653/0x14b0 drivers/base/dd.c:596
__driver_probe_device+0x3e9/0x530 drivers/base/dd.c:755
driver_probe_device drivers/base/dd.c:785 [inline]
__device_attach_driver+0x79f/0x1120 drivers/base/dd.c:902
bus_for_each_drv+0x2d6/0x3f0 drivers/base/bus.c:427
__device_attach+0x593/0x8e0 drivers/base/dd.c:973
device_initial_probe+0x4a/0x60 drivers/base/dd.c:1020
bus_probe_device+0x17b/0x3e0 drivers/base/bus.c:487
device_add+0x1fff/0x26e0 drivers/base/core.c:3405
usb_set_configuration+0x37e9/0x3ed0 drivers/usb/core/message.c:2170
usb_generic_driver_probe+0x13c/0x300 drivers/usb/core/generic.c:238
usb_probe_device+0x309/0x570 drivers/usb/core/driver.c:293
really_probe+0x653/0x14b0 drivers/base/dd.c:596
__driver_probe_device+0x3e9/0x530 drivers/base/dd.c:755
driver_probe_device drivers/base/dd.c:785 [inline]
__device_attach_driver+0x79f/0x1120 drivers/base/dd.c:902
bus_for_each_drv+0x2d6/0x3f0 drivers/base/bus.c:427
__device_attach+0x593/0x8e0 drivers/base/dd.c:973
device_initial_probe+0x4a/0x60 drivers/base/dd.c:1020
bus_probe_device+0x17b/0x3e0 drivers/base/bus.c:487
device_add+0x1fff/0x26e0 drivers/base/core.c:3405
usb_new_device+0x1b8e/0x2950 drivers/usb/core/hub.c:2566
hub_port_connect drivers/usb/core/hub.c:5358 [inline]
hub_port_connect_change drivers/usb/core/hub.c:5502 [inline]
port_event drivers/usb/core/hub.c:5660 [inline]
hub_event+0x58e3/0x89e0 drivers/usb/core/hub.c:5742
process_one_work+0xdb6/0x1820 kernel/workqueue.c:2307
worker_thread+0x10b3/0x21e0 kernel/workqueue.c:2454
kthread+0x3c7/0x500 kernel/kthread.c:377
ret_from_fork+0x1f/0x30
Local variable eeprom.i created at:
ax88179_check_eeprom drivers/net/usb/ax88179_178a.c:1045 [inline]
ax88179_led_setting+0x2e2/0x30b0 drivers/net/usb/ax88179_178a.c:1168
ax88179_bind+0xf00/0x1a50 drivers/net/usb/ax88179_178a.c:1412
CPU: 0 PID: 7 Comm: kworker/0:1 Not tainted 5.17.0-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: usb_hub_wq hub_event
=====================================================
WARNING: multiple messages have this Message-ID (diff)
From: syzbot <syzbot+d3dbdf31fbe9d8f5f311@syzkaller.appspotmail.com>
To: kbuild-all@lists.01.org
Subject: Re: [syzbot] KMSAN: uninit-value in ax88179_led_setting
Date: Wed, 06 Apr 2022 19:41:21 -0700 [thread overview]
Message-ID: <000000000000d27e6705dc07698c@google.com> (raw)
In-Reply-To: <000000000000d56a0305d80c2f2b@google.com>
[-- Attachment #1: Type: text/plain, Size: 3717 bytes --]
syzbot has found a reproducer for the following issue on:
HEAD commit: 33d9269ef6e0 Revert "kernel: kmsan: don't instrument stack..
git tree: https://github.com/google/kmsan.git master
console output: https://syzkaller.appspot.com/x/log.txt?x=158ddbcf700000
kernel config: https://syzkaller.appspot.com/x/.config?x=d830111cc3be873
dashboard link: https://syzkaller.appspot.com/bug?extid=d3dbdf31fbe9d8f5f311
compiler: clang version 14.0.0 (/usr/local/google/src/llvm-git-monorepo 2b554920f11c8b763cd9ed9003f4e19b919b8e1f), GNU ld (GNU Binutils for Debian) 2.35.2
syz repro: https://syzkaller.appspot.com/x/repro.syz?x=146e3dc3700000
IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+d3dbdf31fbe9d8f5f311(a)syzkaller.appspotmail.com
ax88179_178a 2-1:0.252 (unnamed net_device) (uninitialized): Failed to read reg index 0x0001: -71
ax88179_178a 2-1:0.252 (unnamed net_device) (uninitialized): Failed to read reg index 0x0002: -71
=====================================================
BUG: KMSAN: uninit-value in ax88179_check_eeprom drivers/net/usb/ax88179_178a.c:1074 [inline]
BUG: KMSAN: uninit-value in ax88179_led_setting+0x884/0x30b0 drivers/net/usb/ax88179_178a.c:1168
ax88179_check_eeprom drivers/net/usb/ax88179_178a.c:1074 [inline]
ax88179_led_setting+0x884/0x30b0 drivers/net/usb/ax88179_178a.c:1168
ax88179_bind+0xf00/0x1a50 drivers/net/usb/ax88179_178a.c:1412
usbnet_probe+0x1251/0x4160 drivers/net/usb/usbnet.c:1747
usb_probe_interface+0xf19/0x1600 drivers/usb/core/driver.c:396
really_probe+0x653/0x14b0 drivers/base/dd.c:596
__driver_probe_device+0x3e9/0x530 drivers/base/dd.c:755
driver_probe_device drivers/base/dd.c:785 [inline]
__device_attach_driver+0x79f/0x1120 drivers/base/dd.c:902
bus_for_each_drv+0x2d6/0x3f0 drivers/base/bus.c:427
__device_attach+0x593/0x8e0 drivers/base/dd.c:973
device_initial_probe+0x4a/0x60 drivers/base/dd.c:1020
bus_probe_device+0x17b/0x3e0 drivers/base/bus.c:487
device_add+0x1fff/0x26e0 drivers/base/core.c:3405
usb_set_configuration+0x37e9/0x3ed0 drivers/usb/core/message.c:2170
usb_generic_driver_probe+0x13c/0x300 drivers/usb/core/generic.c:238
usb_probe_device+0x309/0x570 drivers/usb/core/driver.c:293
really_probe+0x653/0x14b0 drivers/base/dd.c:596
__driver_probe_device+0x3e9/0x530 drivers/base/dd.c:755
driver_probe_device drivers/base/dd.c:785 [inline]
__device_attach_driver+0x79f/0x1120 drivers/base/dd.c:902
bus_for_each_drv+0x2d6/0x3f0 drivers/base/bus.c:427
__device_attach+0x593/0x8e0 drivers/base/dd.c:973
device_initial_probe+0x4a/0x60 drivers/base/dd.c:1020
bus_probe_device+0x17b/0x3e0 drivers/base/bus.c:487
device_add+0x1fff/0x26e0 drivers/base/core.c:3405
usb_new_device+0x1b8e/0x2950 drivers/usb/core/hub.c:2566
hub_port_connect drivers/usb/core/hub.c:5358 [inline]
hub_port_connect_change drivers/usb/core/hub.c:5502 [inline]
port_event drivers/usb/core/hub.c:5660 [inline]
hub_event+0x58e3/0x89e0 drivers/usb/core/hub.c:5742
process_one_work+0xdb6/0x1820 kernel/workqueue.c:2307
worker_thread+0x10b3/0x21e0 kernel/workqueue.c:2454
kthread+0x3c7/0x500 kernel/kthread.c:377
ret_from_fork+0x1f/0x30
Local variable eeprom.i created at:
ax88179_check_eeprom drivers/net/usb/ax88179_178a.c:1045 [inline]
ax88179_led_setting+0x2e2/0x30b0 drivers/net/usb/ax88179_178a.c:1168
ax88179_bind+0xf00/0x1a50 drivers/net/usb/ax88179_178a.c:1412
CPU: 0 PID: 7 Comm: kworker/0:1 Not tainted 5.17.0-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: usb_hub_wq hub_event
=====================================================
next prev parent reply other threads:[~2022-04-07 2:41 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-02-15 10:42 [syzbot] KMSAN: uninit-value in ax88179_led_setting syzbot
2022-04-07 2:41 ` syzbot [this message]
2022-04-07 2:41 ` syzbot
2022-04-09 8:27 ` David Kahurani
2022-04-09 8:40 ` syzbot
2022-04-09 8:40 ` syzbot
2022-04-15 1:54 ` David Kahurani
2022-04-15 1:54 ` David Kahurani
2022-04-15 3:53 ` syzbot
2022-04-15 3:53 ` syzbot
[not found] <CAAZOf27PHWxdZifZpQYfTHb3h=qk22jRc6-A2LvBkLTR6xNOKg@mail.gmail.com>
2022-03-26 11:47 ` David Kahurani
2022-03-26 12:10 ` Pavel Skripkin
2022-03-26 12:43 ` Pavel Skripkin
2022-03-26 18:26 ` David Kahurani
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