KMSAN: uninit-value in smsc95xx_wait_eeprom (3)

Status: auto-obsoleted due to no activity on 2023/12/15 07:30
Subsystems: net usb
[Documentation on labels]
First crash: 1131d, last: 1059d
▶ ▼ Similar bugs (2)
Kernel Title Rank 🛈 Repro Cause bisect Fix bisect Count Last Reported Patched Status
upstream KMSAN: uninit-value in smsc95xx_wait_eeprom net usb 7 2 2549d 2568d 0/29 auto-closed as invalid on 2019/12/16 06:29
upstream KMSAN: uninit-value in smsc95xx_wait_eeprom (2) net usb 7 1 2071d 2071d 0/29 auto-closed as invalid on 2021/04/07 01:51

Sample crash report:
=====================================================
BUG: KMSAN: uninit-value in smsc95xx_wait_eeprom+0x1fc/0x370 drivers/net/usb/smsc95xx.c:322
 smsc95xx_wait_eeprom+0x1fc/0x370 drivers/net/usb/smsc95xx.c:322
 smsc95xx_read_eeprom+0x284/0x670 drivers/net/usb/smsc95xx.c:379
 smsc95xx_init_mac_address drivers/net/usb/smsc95xx.c:816 [inline]
 smsc95xx_bind+0x6d8/0x22e0 drivers/net/usb/smsc95xx.c:1128
 usbnet_probe+0x100b/0x4060 drivers/net/usb/usbnet.c:1750
 usb_probe_interface+0xc75/0x1210 drivers/usb/core/driver.c:396
 really_probe+0x506/0xf40 drivers/base/dd.c:658
 __driver_probe_device+0x2a7/0x5d0 drivers/base/dd.c:800
 driver_probe_device+0x72/0x7b0 drivers/base/dd.c:830
 __device_attach_driver+0x55a/0x8f0 drivers/base/dd.c:958
 bus_for_each_drv+0x3ff/0x620 drivers/base/bus.c:457
 __device_attach+0x3bd/0x640 drivers/base/dd.c:1030
 device_initial_probe+0x32/0x40 drivers/base/dd.c:1079
 bus_probe_device+0x3d8/0x5a0 drivers/base/bus.c:532
 device_add+0x16ae/0x1f20 drivers/base/core.c:3622
 usb_set_configuration+0x31c9/0x38c0 drivers/usb/core/message.c:2207
 usb_generic_driver_probe+0x109/0x2a0 drivers/usb/core/generic.c:238
 usb_probe_device+0x290/0x4a0 drivers/usb/core/driver.c:293
 really_probe+0x506/0xf40 drivers/base/dd.c:658
 __driver_probe_device+0x2a7/0x5d0 drivers/base/dd.c:800
 driver_probe_device+0x72/0x7b0 drivers/base/dd.c:830
 __device_attach_driver+0x55a/0x8f0 drivers/base/dd.c:958
 bus_for_each_drv+0x3ff/0x620 drivers/base/bus.c:457
 __device_attach+0x3bd/0x640 drivers/base/dd.c:1030
 device_initial_probe+0x32/0x40 drivers/base/dd.c:1079
 bus_probe_device+0x3d8/0x5a0 drivers/base/bus.c:532
 device_add+0x16ae/0x1f20 drivers/base/core.c:3622
 usb_new_device+0x15f6/0x22f0 drivers/usb/core/hub.c:2589
 hub_port_connect drivers/usb/core/hub.c:5440 [inline]
 hub_port_connect_change drivers/usb/core/hub.c:5580 [inline]
 port_event drivers/usb/core/hub.c:5740 [inline]
 hub_event+0x53bc/0x7290 drivers/usb/core/hub.c:5822
 process_one_work kernel/workqueue.c:2630 [inline]
 process_scheduled_works+0x104e/0x1e70 kernel/workqueue.c:2703
 worker_thread+0xf45/0x1490 kernel/workqueue.c:2784
 kthread+0x3e8/0x540 kernel/kthread.c:388
 ret_from_fork+0x66/0x80 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:304

Local variable buf.i created at:
 smsc95xx_read_reg drivers/net/usb/smsc95xx.c:90 [inline]
 smsc95xx_wait_eeprom+0x92/0x370 drivers/net/usb/smsc95xx.c:316
 smsc95xx_read_eeprom+0x284/0x670 drivers/net/usb/smsc95xx.c:379

CPU: 1 PID: 5080 Comm: kworker/1:4 Not tainted 6.6.0-rc1-syzkaller-00125-ge42bebf6db29 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/04/2023
Workqueue: usb_hub_wq hub_event
=====================================================

Crashes (2):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2023/09/16 07:19 upstream e42bebf6db29 0b6a67ac .config console log report info ci-upstream-kmsan-gce KMSAN: uninit-value in smsc95xx_wait_eeprom
2023/07/06 05:27 https://github.com/google/kmsan.git master 257152fe29be ba5dba36 .config console log report info ci-upstream-kmsan-gce KMSAN: uninit-value in smsc95xx_wait_eeprom
* Struck through repros no longer work on HEAD.