From: syzbot <syzbot+3bbbade4e1a7ab45ca3b@syzkaller.appspotmail.com>
To: jdelvare@suse.com, linux-hwmon@vger.kernel.org,
linux-kernel@vger.kernel.org, linux@roeck-us.net,
mail@mariuszachmann.de, syzkaller-bugs@googlegroups.com
Subject: [syzbot] [hwmon?] KMSAN: uninit-value in get_temp_cnct
Date: Wed, 18 Jun 2025 21:31:28 -0700 [thread overview]
Message-ID: <685392a0.050a0220.216029.0168.GAE@google.com> (raw)
Hello,
syzbot found the following issue on:
HEAD commit: 4774cfe3543a Merge tag 'scsi-fixes' of git://git.kernel.or..
git tree: upstream
console output: https://syzkaller.appspot.com/x/log.txt?x=10e3f10c580000
kernel config: https://syzkaller.appspot.com/x/.config?x=61539536677af51c
dashboard link: https://syzkaller.appspot.com/bug?extid=3bbbade4e1a7ab45ca3b
compiler: Debian clang version 20.1.6 (++20250514063057+1e4d39e07757-1~exp1~20250514183223.118), Debian LLD 20.1.6
userspace arch: i386
Unfortunately, I don't have any reproducer for this issue yet.
Downloadable assets:
disk image: https://storage.googleapis.com/syzbot-assets/0cb38ba04f99/disk-4774cfe3.raw.xz
vmlinux: https://storage.googleapis.com/syzbot-assets/ff376a7ba200/vmlinux-4774cfe3.xz
kernel image: https://storage.googleapis.com/syzbot-assets/570051315dbf/bzImage-4774cfe3.xz
IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+3bbbade4e1a7ab45ca3b@syzkaller.appspotmail.com
usb 7-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0
usb 7-1: config 0 descriptor??
corsair-cpro 0003:1B1C:0C10.0017: hidraw0: USB HID v4.06 Device [HID 1b1c:0c10] on usb-dummy_hcd.6-1/input0
=====================================================
BUG: KMSAN: uninit-value in get_temp_cnct+0x1f3/0x3b0 drivers/hwmon/corsair-cpro.c:497
get_temp_cnct+0x1f3/0x3b0 drivers/hwmon/corsair-cpro.c:497
ccp_probe+0x458/0x790 drivers/hwmon/corsair-cpro.c:622
__hid_device_probe drivers/hid/hid-core.c:2724 [inline]
hid_device_probe+0x539/0xab0 drivers/hid/hid-core.c:2761
call_driver_probe drivers/base/dd.c:-1 [inline]
really_probe+0x4d4/0xd90 drivers/base/dd.c:657
__driver_probe_device+0x268/0x380 drivers/base/dd.c:799
driver_probe_device+0x70/0x8b0 drivers/base/dd.c:829
__device_attach_driver+0x4ee/0x950 drivers/base/dd.c:957
bus_for_each_drv+0x3e0/0x680 drivers/base/bus.c:462
__device_attach+0x3c8/0x5c0 drivers/base/dd.c:1029
device_initial_probe+0x33/0x40 drivers/base/dd.c:1078
bus_probe_device+0x3ba/0x5e0 drivers/base/bus.c:537
device_add+0x12a9/0x1c10 drivers/base/core.c:3692
hid_add_device+0x5ed/0x7b0 drivers/hid/hid-core.c:2907
usbhid_probe+0x1fec/0x2660 drivers/hid/usbhid/hid-core.c:1435
usb_probe_interface+0xd04/0x1310 drivers/usb/core/driver.c:396
call_driver_probe drivers/base/dd.c:-1 [inline]
really_probe+0x4d4/0xd90 drivers/base/dd.c:657
__driver_probe_device+0x268/0x380 drivers/base/dd.c:799
driver_probe_device+0x70/0x8b0 drivers/base/dd.c:829
__device_attach_driver+0x4ee/0x950 drivers/base/dd.c:957
bus_for_each_drv+0x3e0/0x680 drivers/base/bus.c:462
__device_attach+0x3c8/0x5c0 drivers/base/dd.c:1029
device_initial_probe+0x33/0x40 drivers/base/dd.c:1078
bus_probe_device+0x3ba/0x5e0 drivers/base/bus.c:537
device_add+0x12a9/0x1c10 drivers/base/core.c:3692
usb_set_configuration+0x3493/0x3b70 drivers/usb/core/message.c:2210
usb_generic_driver_probe+0xfc/0x290 drivers/usb/core/generic.c:250
usb_probe_device+0x38a/0x690 drivers/usb/core/driver.c:291
call_driver_probe drivers/base/dd.c:-1 [inline]
really_probe+0x4d4/0xd90 drivers/base/dd.c:657
__driver_probe_device+0x268/0x380 drivers/base/dd.c:799
driver_probe_device+0x70/0x8b0 drivers/base/dd.c:829
__device_attach_driver+0x4ee/0x950 drivers/base/dd.c:957
bus_for_each_drv+0x3e0/0x680 drivers/base/bus.c:462
__device_attach+0x3c8/0x5c0 drivers/base/dd.c:1029
device_initial_probe+0x33/0x40 drivers/base/dd.c:1078
bus_probe_device+0x3ba/0x5e0 drivers/base/bus.c:537
device_add+0x12a9/0x1c10 drivers/base/core.c:3692
usb_new_device+0x104b/0x20c0 drivers/usb/core/hub.c:2663
hub_port_connect drivers/usb/core/hub.c:5535 [inline]
hub_port_connect_change drivers/usb/core/hub.c:5675 [inline]
port_event drivers/usb/core/hub.c:5835 [inline]
hub_event+0x5588/0x7580 drivers/usb/core/hub.c:5917
process_one_work kernel/workqueue.c:3238 [inline]
process_scheduled_works+0xb91/0x1d80 kernel/workqueue.c:3321
worker_thread+0xedf/0x1590 kernel/workqueue.c:3402
kthread+0xd5c/0xf00 kernel/kthread.c:464
ret_from_fork+0x1e0/0x310 arch/x86/kernel/process.c:148
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
Uninit was stored to memory at:
get_temp_cnct+0x1ec/0x3b0 drivers/hwmon/corsair-cpro.c:496
ccp_probe+0x458/0x790 drivers/hwmon/corsair-cpro.c:622
__hid_device_probe drivers/hid/hid-core.c:2724 [inline]
hid_device_probe+0x539/0xab0 drivers/hid/hid-core.c:2761
call_driver_probe drivers/base/dd.c:-1 [inline]
really_probe+0x4d4/0xd90 drivers/base/dd.c:657
__driver_probe_device+0x268/0x380 drivers/base/dd.c:799
driver_probe_device+0x70/0x8b0 drivers/base/dd.c:829
__device_attach_driver+0x4ee/0x950 drivers/base/dd.c:957
bus_for_each_drv+0x3e0/0x680 drivers/base/bus.c:462
__device_attach+0x3c8/0x5c0 drivers/base/dd.c:1029
device_initial_probe+0x33/0x40 drivers/base/dd.c:1078
bus_probe_device+0x3ba/0x5e0 drivers/base/bus.c:537
device_add+0x12a9/0x1c10 drivers/base/core.c:3692
hid_add_device+0x5ed/0x7b0 drivers/hid/hid-core.c:2907
usbhid_probe+0x1fec/0x2660 drivers/hid/usbhid/hid-core.c:1435
usb_probe_interface+0xd04/0x1310 drivers/usb/core/driver.c:396
call_driver_probe drivers/base/dd.c:-1 [inline]
really_probe+0x4d4/0xd90 drivers/base/dd.c:657
__driver_probe_device+0x268/0x380 drivers/base/dd.c:799
driver_probe_device+0x70/0x8b0 drivers/base/dd.c:829
__device_attach_driver+0x4ee/0x950 drivers/base/dd.c:957
bus_for_each_drv+0x3e0/0x680 drivers/base/bus.c:462
__device_attach+0x3c8/0x5c0 drivers/base/dd.c:1029
device_initial_probe+0x33/0x40 drivers/base/dd.c:1078
bus_probe_device+0x3ba/0x5e0 drivers/base/bus.c:537
device_add+0x12a9/0x1c10 drivers/base/core.c:3692
usb_set_configuration+0x3493/0x3b70 drivers/usb/core/message.c:2210
usb_generic_driver_probe+0xfc/0x290 drivers/usb/core/generic.c:250
usb_probe_device+0x38a/0x690 drivers/usb/core/driver.c:291
call_driver_probe drivers/base/dd.c:-1 [inline]
really_probe+0x4d4/0xd90 drivers/base/dd.c:657
__driver_probe_device+0x268/0x380 drivers/base/dd.c:799
driver_probe_device+0x70/0x8b0 drivers/base/dd.c:829
__device_attach_driver+0x4ee/0x950 drivers/base/dd.c:957
bus_for_each_drv+0x3e0/0x680 drivers/base/bus.c:462
__device_attach+0x3c8/0x5c0 drivers/base/dd.c:1029
device_initial_probe+0x33/0x40 drivers/base/dd.c:1078
bus_probe_device+0x3ba/0x5e0 drivers/base/bus.c:537
device_add+0x12a9/0x1c10 drivers/base/core.c:3692
usb_new_device+0x104b/0x20c0 drivers/usb/core/hub.c:2663
hub_port_connect drivers/usb/core/hub.c:5535 [inline]
hub_port_connect_change drivers/usb/core/hub.c:5675 [inline]
port_event drivers/usb/core/hub.c:5835 [inline]
hub_event+0x5588/0x7580 drivers/usb/core/hub.c:5917
process_one_work kernel/workqueue.c:3238 [inline]
process_scheduled_works+0xb91/0x1d80 kernel/workqueue.c:3321
worker_thread+0xedf/0x1590 kernel/workqueue.c:3402
kthread+0xd5c/0xf00 kernel/kthread.c:464
ret_from_fork+0x1e0/0x310 arch/x86/kernel/process.c:148
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
Uninit was created at:
slab_post_alloc_hook mm/slub.c:4154 [inline]
slab_alloc_node mm/slub.c:4197 [inline]
__do_kmalloc_node mm/slub.c:4327 [inline]
__kmalloc_node_track_caller_noprof+0x96d/0x12f0 mm/slub.c:4347
alloc_dr drivers/base/devres.c:119 [inline]
devm_kmalloc+0xd7/0x2f0 drivers/base/devres.c:864
ccp_probe+0x114/0x790 drivers/hwmon/corsair-cpro.c:596
__hid_device_probe drivers/hid/hid-core.c:2724 [inline]
hid_device_probe+0x539/0xab0 drivers/hid/hid-core.c:2761
call_driver_probe drivers/base/dd.c:-1 [inline]
really_probe+0x4d4/0xd90 drivers/base/dd.c:657
__driver_probe_device+0x268/0x380 drivers/base/dd.c:799
driver_probe_device+0x70/0x8b0 drivers/base/dd.c:829
__device_attach_driver+0x4ee/0x950 drivers/base/dd.c:957
bus_for_each_drv+0x3e0/0x680 drivers/base/bus.c:462
__device_attach+0x3c8/0x5c0 drivers/base/dd.c:1029
device_initial_probe+0x33/0x40 drivers/base/dd.c:1078
bus_probe_device+0x3ba/0x5e0 drivers/base/bus.c:537
device_add+0x12a9/0x1c10 drivers/base/core.c:3692
hid_add_device+0x5ed/0x7b0 drivers/hid/hid-core.c:2907
usbhid_probe+0x1fec/0x2660 drivers/hid/usbhid/hid-core.c:1435
usb_probe_interface+0xd04/0x1310 drivers/usb/core/driver.c:396
call_driver_probe drivers/base/dd.c:-1 [inline]
really_probe+0x4d4/0xd90 drivers/base/dd.c:657
__driver_probe_device+0x268/0x380 drivers/base/dd.c:799
driver_probe_device+0x70/0x8b0 drivers/base/dd.c:829
__device_attach_driver+0x4ee/0x950 drivers/base/dd.c:957
bus_for_each_drv+0x3e0/0x680 drivers/base/bus.c:462
__device_attach+0x3c8/0x5c0 drivers/base/dd.c:1029
device_initial_probe+0x33/0x40 drivers/base/dd.c:1078
bus_probe_device+0x3ba/0x5e0 drivers/base/bus.c:537
device_add+0x12a9/0x1c10 drivers/base/core.c:3692
usb_set_configuration+0x3493/0x3b70 drivers/usb/core/message.c:2210
usb_generic_driver_probe+0xfc/0x290 drivers/usb/core/generic.c:250
usb_probe_device+0x38a/0x690 drivers/usb/core/driver.c:291
call_driver_probe drivers/base/dd.c:-1 [inline]
really_probe+0x4d4/0xd90 drivers/base/dd.c:657
__driver_probe_device+0x268/0x380 drivers/base/dd.c:799
driver_probe_device+0x70/0x8b0 drivers/base/dd.c:829
__device_attach_driver+0x4ee/0x950 drivers/base/dd.c:957
bus_for_each_drv+0x3e0/0x680 drivers/base/bus.c:462
__device_attach+0x3c8/0x5c0 drivers/base/dd.c:1029
device_initial_probe+0x33/0x40 drivers/base/dd.c:1078
bus_probe_device+0x3ba/0x5e0 drivers/base/bus.c:537
device_add+0x12a9/0x1c10 drivers/base/core.c:3692
usb_new_device+0x104b/0x20c0 drivers/usb/core/hub.c:2663
hub_port_connect drivers/usb/core/hub.c:5535 [inline]
hub_port_connect_change drivers/usb/core/hub.c:5675 [inline]
port_event drivers/usb/core/hub.c:5835 [inline]
hub_event+0x5588/0x7580 drivers/usb/core/hub.c:5917
process_one_work kernel/workqueue.c:3238 [inline]
process_scheduled_works+0xb91/0x1d80 kernel/workqueue.c:3321
worker_thread+0xedf/0x1590 kernel/workqueue.c:3402
kthread+0xd5c/0xf00 kernel/kthread.c:464
ret_from_fork+0x1e0/0x310 arch/x86/kernel/process.c:148
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
CPU: 0 UID: 0 PID: 5855 Comm: kworker/0:3 Not tainted 6.16.0-rc1-syzkaller-00203-g4774cfe3543a #0 PREEMPT(undef)
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025
Workqueue: usb_hub_wq hub_event
=====================================================
---
This report 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.
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If the report is already addressed, let syzbot know by replying with:
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next reply other threads:[~2025-06-19 4:31 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-06-19 4:31 syzbot [this message]
2025-06-19 5:56 ` Guenter Roeck
2025-06-19 8:01 ` Marius Zachmann
2025-06-19 13:01 ` Guenter Roeck
2025-06-19 13:37 ` [PATCH] hwmon: fill it with 0 when data size is insufficient Edward Adam Davis
2025-06-19 16:54 ` Guenter Roeck
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