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KMSAN: uninit-value in asix_mdio_read (2)

Status: fixed on 2022/03/08 16:11
Subsystems: usb
[Documentation on labels]
Reported-by: syzbot+f44badb06036334e867a@syzkaller.appspotmail.com
Fix commit: 8035b1a2a37a asix: fix uninit-value in asix_mdio_read()
First crash: 1095d, last: 1008d
▶ ▼ Discussions (4)
Title Replies (including bot) Last reply
[PATCH 5.15 000/128] 5.15.12-rc1 review 138 (138) 2021/12/28 21:26
[PATCH v2 1/2] asix: fix uninit-value in asix_mdio_read() 4 (4) 2021/12/22 23:00
[PATCH 1/2] asix: fix uninit-value in asix_mdio_read() 5 (5) 2021/12/21 20:00
[syzbot] KMSAN: uninit-value in asix_mdio_read (2) 5 (7) 2021/12/19 21:15
▶ ▼ Similar bugs (2)
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
upstream KMSAN: uninit-value in asix_mdio_read usb C 915 1227d 1890d 20/28 fixed on 2021/11/10 00:50
upstream KMSAN: uninit-value in asix_mdio_read (3) usb C 1582 938d 1003d 22/28 fixed on 2023/02/24 13:51
▶ ▼ Last patch testing requests (1)
Created Duration User Patch Repo Result
2021/12/18 21:14 14m paskripkin@gmail.com patch https://github.com/google/kmsan.git master OK

Sample crash report:
=====================================================
BUG: KMSAN: uninit-value in asix_check_host_enable drivers/net/usb/asix_common.c:82 [inline]
BUG: KMSAN: uninit-value in asix_check_host_enable drivers/net/usb/asix_common.c:82 [inline] drivers/net/usb/asix_common.c:497
BUG: KMSAN: uninit-value in asix_mdio_read+0x3c1/0xb00 drivers/net/usb/asix_common.c:497 drivers/net/usb/asix_common.c:497
 asix_check_host_enable drivers/net/usb/asix_common.c:82 [inline]
 asix_check_host_enable drivers/net/usb/asix_common.c:82 [inline] drivers/net/usb/asix_common.c:497
 asix_mdio_read+0x3c1/0xb00 drivers/net/usb/asix_common.c:497 drivers/net/usb/asix_common.c:497
 asix_mdio_bus_read+0xba/0xe0 drivers/net/usb/asix_common.c:556 drivers/net/usb/asix_common.c:556
 __mdiobus_read+0xbf/0x4f0 drivers/net/phy/mdio_bus.c:755 drivers/net/phy/mdio_bus.c:755
 mdiobus_read+0xaa/0xf0 drivers/net/phy/mdio_bus.c:862 drivers/net/phy/mdio_bus.c:862
 get_phy_c22_id drivers/net/phy/phy_device.c:813 [inline]
 get_phy_c22_id drivers/net/phy/phy_device.c:813 [inline] drivers/net/phy/phy_device.c:890
 get_phy_device+0x218/0x8b0 drivers/net/phy/phy_device.c:890 drivers/net/phy/phy_device.c:890
 mdiobus_scan+0x1c7/0x940
 __mdiobus_register+0xe16/0x1200 drivers/net/phy/mdio_bus.c:583 drivers/net/phy/mdio_bus.c:583
 __devm_mdiobus_register+0x18f/0x2f0 drivers/net/phy/mdio_devres.c:87 drivers/net/phy/mdio_devres.c:87
 ax88772_init_mdio drivers/net/usb/asix_devices.c:676 [inline]
 ax88772_init_mdio drivers/net/usb/asix_devices.c:676 [inline] drivers/net/usb/asix_devices.c:786
 ax88772_bind+0x10b1/0x1770 drivers/net/usb/asix_devices.c:786 drivers/net/usb/asix_devices.c:786
 usbnet_probe+0x1284/0x4140 drivers/net/usb/usbnet.c:1747 drivers/net/usb/usbnet.c:1747
 usb_probe_interface+0xf19/0x1600 drivers/usb/core/driver.c:396 drivers/usb/core/driver.c:396
 really_probe+0x67d/0x1510 drivers/base/dd.c:596 drivers/base/dd.c:596
 __driver_probe_device+0x3e9/0x530 drivers/base/dd.c:751 drivers/base/dd.c:751
 driver_probe_device drivers/base/dd.c:781 [inline]
 driver_probe_device drivers/base/dd.c:781 [inline] drivers/base/dd.c:898
 __device_attach_driver+0x79f/0x1120 drivers/base/dd.c:898 drivers/base/dd.c:898
 bus_for_each_drv+0x2d6/0x3f0 drivers/base/bus.c:427 drivers/base/bus.c:427
 __device_attach+0x593/0x8e0 drivers/base/dd.c:969 drivers/base/dd.c:969
 device_initial_probe+0x4a/0x60 drivers/base/dd.c:1016 drivers/base/dd.c:1016
 bus_probe_device+0x17b/0x3e0 drivers/base/bus.c:487 drivers/base/bus.c:487
 device_add+0x1d3e/0x2400 drivers/base/core.c:3394 drivers/base/core.c:3394
 usb_set_configuration+0x37e9/0x3ed0 drivers/usb/core/message.c:2170 drivers/usb/core/message.c:2170
 usb_generic_driver_probe+0x13c/0x300 drivers/usb/core/generic.c:238 drivers/usb/core/generic.c:238
 usb_probe_device+0x309/0x570 drivers/usb/core/driver.c:293 drivers/usb/core/driver.c:293
 really_probe+0x67d/0x1510 drivers/base/dd.c:596 drivers/base/dd.c:596
 __driver_probe_device+0x3e9/0x530 drivers/base/dd.c:751 drivers/base/dd.c:751
 driver_probe_device drivers/base/dd.c:781 [inline]
 driver_probe_device drivers/base/dd.c:781 [inline] drivers/base/dd.c:898
 __device_attach_driver+0x79f/0x1120 drivers/base/dd.c:898 drivers/base/dd.c:898
 bus_for_each_drv+0x2d6/0x3f0 drivers/base/bus.c:427 drivers/base/bus.c:427
 __device_attach+0x593/0x8e0 drivers/base/dd.c:969 drivers/base/dd.c:969
 device_initial_probe+0x4a/0x60 drivers/base/dd.c:1016 drivers/base/dd.c:1016
 bus_probe_device+0x17b/0x3e0 drivers/base/bus.c:487 drivers/base/bus.c:487
 device_add+0x1d3e/0x2400 drivers/base/core.c:3394 drivers/base/core.c:3394
 usb_new_device+0x1b8e/0x2950 drivers/usb/core/hub.c:2563 drivers/usb/core/hub.c:2563
 hub_port_connect drivers/usb/core/hub.c:5353 [inline]
 hub_port_connect_change drivers/usb/core/hub.c:5497 [inline]
 port_event drivers/usb/core/hub.c:5643 [inline]
 hub_port_connect drivers/usb/core/hub.c:5353 [inline] drivers/usb/core/hub.c:5725
 hub_port_connect_change drivers/usb/core/hub.c:5497 [inline] drivers/usb/core/hub.c:5725
 port_event drivers/usb/core/hub.c:5643 [inline] drivers/usb/core/hub.c:5725
 hub_event+0x5ad2/0x8910 drivers/usb/core/hub.c:5725 drivers/usb/core/hub.c:5725
 process_one_work+0xdb9/0x1820 kernel/workqueue.c:2298 kernel/workqueue.c:2298
 process_scheduled_works kernel/workqueue.c:2361 [inline]
 process_scheduled_works kernel/workqueue.c:2361 [inline] kernel/workqueue.c:2447
 worker_thread+0x1735/0x21f0 kernel/workqueue.c:2447 kernel/workqueue.c:2447
 kthread+0x721/0x850 kernel/kthread.c:327 kernel/kthread.c:327
 ret_from_fork+0x1f/0x30

Local variable smsr.i created at:
 asix_mdio_read+0xbc/0xb00 drivers/net/usb/asix_common.c:497 drivers/net/usb/asix_common.c:497
 asix_mdio_bus_read+0xba/0xe0 drivers/net/usb/asix_common.c:556 drivers/net/usb/asix_common.c:556

CPU: 0 PID: 3145 Comm: kworker/0:3 Not tainted 5.16.0-rc5-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: usb_hub_wq hub_event

=====================================================

Crashes (1075):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2021/12/18 04:01 https://github.com/google/kmsan.git master b0a8b5053e8b 44068e19 .config console log report syz C ci-upstream-kmsan-gce KMSAN: uninit-value in asix_mdio_read
2021/12/19 12:06 https://github.com/google/kmsan.git master b0a8b5053e8b 44068e19 .config console log report syz ci-upstream-kmsan-gce KMSAN: uninit-value in asix_mdio_read
2021/12/17 00:25 https://github.com/google/kmsan.git master d7f51389fa36 8dd6a5e3 .config console log report syz ci-upstream-kmsan-gce KMSAN: uninit-value in asix_mdio_read
2021/12/14 19:25 https://github.com/google/kmsan.git master b1e1bb6f7a2e d018dd31 .config console log report syz ci-upstream-kmsan-gce KMSAN: uninit-value in asix_mdio_read
2022/03/08 14:51 https://github.com/google/kmsan.git master 724946410067 7bdd8b2c .config console log report info ci-upstream-kmsan-gce KMSAN: uninit-value in asix_mdio_read
2022/03/08 13:33 https://github.com/google/kmsan.git master 724946410067 7bdd8b2c .config console log report info ci-upstream-kmsan-gce KMSAN: uninit-value in asix_mdio_read
2022/03/08 12:06 https://github.com/google/kmsan.git master 724946410067 7bdd8b2c .config console log report info ci-upstream-kmsan-gce KMSAN: uninit-value in asix_mdio_read
2022/03/08 09:30 https://github.com/google/kmsan.git master 724946410067 7bdd8b2c .config console log report info ci-upstream-kmsan-gce KMSAN: uninit-value in asix_mdio_read
2022/03/08 09:17 https://github.com/google/kmsan.git master 724946410067 7bdd8b2c .config console log report info ci-upstream-kmsan-gce KMSAN: uninit-value in asix_mdio_read
2022/03/08 08:04 https://github.com/google/kmsan.git master 724946410067 7bdd8b2c .config console log report info ci-upstream-kmsan-gce KMSAN: uninit-value in asix_mdio_read
2022/03/08 06:26 https://github.com/google/kmsan.git master 724946410067 7bdd8b2c .config console log report info ci-upstream-kmsan-gce KMSAN: uninit-value in asix_mdio_read
2022/03/08 05:21 https://github.com/google/kmsan.git master 724946410067 7bdd8b2c .config console log report info ci-upstream-kmsan-gce KMSAN: uninit-value in asix_mdio_read
2022/03/08 03:45 https://github.com/google/kmsan.git master 724946410067 7bdd8b2c .config console log report info ci-upstream-kmsan-gce KMSAN: uninit-value in asix_mdio_read
2022/03/08 01:55 https://github.com/google/kmsan.git master 724946410067 7bdd8b2c .config console log report info ci-upstream-kmsan-gce KMSAN: uninit-value in asix_mdio_read
2022/03/08 00:37 https://github.com/google/kmsan.git master 724946410067 7bdd8b2c .config console log report info ci-upstream-kmsan-gce KMSAN: uninit-value in asix_mdio_read
2022/03/07 23:27 https://github.com/google/kmsan.git master 724946410067 7bdd8b2c .config console log report info ci-upstream-kmsan-gce KMSAN: uninit-value in asix_mdio_read
2022/03/07 22:11 https://github.com/google/kmsan.git master 724946410067 7bdd8b2c .config console log report info ci-upstream-kmsan-gce KMSAN: uninit-value in asix_mdio_read
2022/03/07 19:59 https://github.com/google/kmsan.git master 724946410067 7bdd8b2c .config console log report info ci-upstream-kmsan-gce KMSAN: uninit-value in asix_mdio_read
2022/03/07 18:44 https://github.com/google/kmsan.git master 724946410067 7bdd8b2c .config console log report info ci-upstream-kmsan-gce KMSAN: uninit-value in asix_mdio_read
2022/03/07 17:41 https://github.com/google/kmsan.git master 724946410067 7bdd8b2c .config console log report info ci-upstream-kmsan-gce KMSAN: uninit-value in asix_mdio_read
2022/03/07 16:40 https://github.com/google/kmsan.git master 724946410067 7bdd8b2c .config console log report info ci-upstream-kmsan-gce KMSAN: uninit-value in asix_mdio_read
2022/03/07 15:40 https://github.com/google/kmsan.git master 724946410067 7bdd8b2c .config console log report info ci-upstream-kmsan-gce KMSAN: uninit-value in asix_mdio_read
2022/03/07 14:39 https://github.com/google/kmsan.git master 724946410067 7bdd8b2c .config console log report info ci-upstream-kmsan-gce KMSAN: uninit-value in asix_mdio_read
2022/03/07 13:26 https://github.com/google/kmsan.git master 724946410067 7bdd8b2c .config console log report info ci-upstream-kmsan-gce KMSAN: uninit-value in asix_mdio_read
2022/03/07 11:37 https://github.com/google/kmsan.git master 724946410067 7bdd8b2c .config console log report info ci-upstream-kmsan-gce KMSAN: uninit-value in asix_mdio_read
2022/03/07 10:34 https://github.com/google/kmsan.git master 724946410067 7bdd8b2c .config console log report info ci-upstream-kmsan-gce KMSAN: uninit-value in asix_mdio_read
2022/03/07 09:27 https://github.com/google/kmsan.git master 724946410067 7bdd8b2c .config console log report info ci-upstream-kmsan-gce KMSAN: uninit-value in asix_mdio_read
2022/03/07 07:45 https://github.com/google/kmsan.git master 724946410067 7bdd8b2c .config console log report info ci-upstream-kmsan-gce KMSAN: uninit-value in asix_mdio_read
2022/03/07 06:43 https://github.com/google/kmsan.git master 724946410067 7bdd8b2c .config console log report info ci-upstream-kmsan-gce KMSAN: uninit-value in asix_mdio_read
2022/03/07 03:15 https://github.com/google/kmsan.git master 724946410067 7bdd8b2c .config console log report info ci-upstream-kmsan-gce KMSAN: uninit-value in asix_mdio_read
2022/03/07 01:31 https://github.com/google/kmsan.git master 724946410067 7bdd8b2c .config console log report info ci-upstream-kmsan-gce KMSAN: uninit-value in asix_mdio_read
2022/03/06 23:50 https://github.com/google/kmsan.git master 724946410067 7bdd8b2c .config console log report info ci-upstream-kmsan-gce KMSAN: uninit-value in asix_mdio_read
2022/03/06 22:19 https://github.com/google/kmsan.git master 724946410067 7bdd8b2c .config console log report info ci-upstream-kmsan-gce KMSAN: uninit-value in asix_mdio_read
2022/03/06 20:59 https://github.com/google/kmsan.git master 724946410067 7bdd8b2c .config console log report info ci-upstream-kmsan-gce KMSAN: uninit-value in asix_mdio_read
2022/03/06 19:53 https://github.com/google/kmsan.git master 724946410067 7bdd8b2c .config console log report info ci-upstream-kmsan-gce KMSAN: uninit-value in asix_mdio_read
2022/03/06 18:50 https://github.com/google/kmsan.git master 724946410067 7bdd8b2c .config console log report info ci-upstream-kmsan-gce KMSAN: uninit-value in asix_mdio_read
2022/03/06 17:46 https://github.com/google/kmsan.git master 724946410067 7bdd8b2c .config console log report info ci-upstream-kmsan-gce KMSAN: uninit-value in asix_mdio_read
2022/03/06 16:29 https://github.com/google/kmsan.git master 724946410067 7bdd8b2c .config console log report info ci-upstream-kmsan-gce KMSAN: uninit-value in asix_mdio_read
2022/03/06 15:03 https://github.com/google/kmsan.git master 724946410067 7bdd8b2c .config console log report info ci-upstream-kmsan-gce KMSAN: uninit-value in asix_mdio_read
2022/03/06 13:59 https://github.com/google/kmsan.git master 724946410067 7bdd8b2c .config console log report info ci-upstream-kmsan-gce KMSAN: uninit-value in asix_mdio_read
2022/03/06 12:20 https://github.com/google/kmsan.git master 724946410067 7bdd8b2c .config console log report info ci-upstream-kmsan-gce KMSAN: uninit-value in asix_mdio_read
2022/03/06 10:32 https://github.com/google/kmsan.git master 724946410067 7bdd8b2c .config console log report info ci-upstream-kmsan-gce KMSAN: uninit-value in asix_mdio_read
2022/03/06 09:14 https://github.com/google/kmsan.git master 724946410067 7bdd8b2c .config console log report info ci-upstream-kmsan-gce KMSAN: uninit-value in asix_mdio_read
2022/03/06 06:23 https://github.com/google/kmsan.git master 724946410067 7bdd8b2c .config console log report info ci-upstream-kmsan-gce KMSAN: uninit-value in asix_mdio_read
2022/03/06 04:34 https://github.com/google/kmsan.git master 724946410067 7bdd8b2c .config console log report info ci-upstream-kmsan-gce KMSAN: uninit-value in asix_mdio_read
2022/03/06 02:24 https://github.com/google/kmsan.git master 724946410067 7bdd8b2c .config console log report info ci-upstream-kmsan-gce KMSAN: uninit-value in asix_mdio_read
2022/03/05 23:44 https://github.com/google/kmsan.git master 724946410067 7bdd8b2c .config console log report info ci-upstream-kmsan-gce KMSAN: uninit-value in asix_mdio_read
2022/03/05 21:19 https://github.com/google/kmsan.git master 724946410067 7bdd8b2c .config console log report info ci-upstream-kmsan-gce KMSAN: uninit-value in asix_mdio_read
2022/03/05 20:01 https://github.com/google/kmsan.git master 724946410067 7bdd8b2c .config console log report info ci-upstream-kmsan-gce KMSAN: uninit-value in asix_mdio_read
2021/12/10 20:36 https://github.com/google/kmsan.git master 8b936c96768e 49ca1f59 .config console log report info ci-upstream-kmsan-gce KMSAN: uninit-value in asix_mdio_read
2022/02/24 20:23 https://github.com/google/kmsan.git master 724946410067 b28851a4 .config console log report info ci-upstream-kmsan-gce-386 KMSAN: uninit-value in asix_mdio_read
* Struck through repros no longer work on HEAD.