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KMSAN: uninit-value in asix_mdio_read (3)

Status: fixed on 2023/02/24 13:51
Subsystems: usb
[Documentation on labels]
Reported-by: syzbot+9ed16c369e0f40e366b2@syzkaller.appspotmail.com
Fix commit: 920a9fa27e78 net: asix: add proper error handling of usb read errors
First crash: 780d, last: 711d
▶ ▼ Discussions (1)
Title Replies (including bot) Last reply
[syzbot] KMSAN: uninit-value in asix_mdio_read (3) 2 (4) 2022/03/13 17:58
▶ ▼ Similar bugs (11)
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
upstream KMSAN: uninit-value in asix_mdio_read (2) usb C 1075 780d 860d 20/26 fixed on 2022/03/08 16:11
upstream KMSAN: uninit-value in asix_mdio_read usb C 915 1000d 1663d 20/26 fixed on 2021/11/10 00:50
upstream KMSAN: uninit-value in seq_printf (2) fs C 99 681d 948d 0/26 auto-closed as invalid on 2022/09/30 02:43
upstream KMSAN: uninit-value in p9pdu_readf v9fs 14 815d 930d 20/26 fixed on 2022/03/08 16:11
upstream KMSAN: uninit-value in kallsyms_lookup_buildid (2) kernel 12 434d 442d 0/26 closed as invalid on 2023/03/06 11:22
upstream KMSAN: uninit-value in hid_connect kernel C 176 542d 892d 0/26 closed as invalid on 2022/11/03 08:52
upstream KMSAN: uninit-value in number (4) kernel C 7189 521d 899d 0/26 closed as invalid on 2022/11/28 10:01
upstream KMSAN: uninit-value in preempt_count_add kernel C 6657 566d 566d 0/26 closed as invalid on 2022/10/10 13:29
upstream KMSAN: kernel-infoleak in _copy_to_iter (7) net C 138977 427d 780d 22/26 fixed on 2023/02/24 13:50
upstream KMSAN: uninit-value in kallsyms_lookup_buildid usb C 232 575d 851d 0/26 closed as invalid on 2022/11/03 10:09
upstream KMSAN: uninit-value in profile_hits (3) kernel C 305 1d05h 122d 0/26 upstream: reported C repro on 2023/12/26 15:59
▶ ▼ Last patch testing requests (1)
Created Duration User Patch Repo Result
2022/03/13 17:42 13m paskripkin@gmail.com patch https://github.com/google/kmsan.git master OK

Sample crash report:
asix 1-1:0.0 (unnamed net_device) (uninitialized): Failed to enable software MII access
asix 1-1:0.0 (unnamed net_device) (uninitialized): Failed to read reg index 0x0000: -71
=====================================================
BUG: KMSAN: uninit-value in asix_check_host_enable drivers/net/usb/asix_common.c:84 [inline]
BUG: KMSAN: uninit-value in asix_mdio_read+0x537/0xa40 drivers/net/usb/asix_common.c:499
 asix_check_host_enable drivers/net/usb/asix_common.c:84 [inline]
 asix_mdio_read+0x537/0xa40 drivers/net/usb/asix_common.c:499
 asix_mdio_bus_read+0xba/0xe0 drivers/net/usb/asix_common.c:558
 __mdiobus_read+0xbf/0x4f0 drivers/net/phy/mdio_bus.c:762
 mdiobus_read+0xaa/0xf0 drivers/net/phy/mdio_bus.c:869
 get_phy_c22_id drivers/net/phy/phy_device.c:813 [inline]
 get_phy_device+0x218/0x8b0 drivers/net/phy/phy_device.c:890
 mdiobus_scan+0x1c7/0x940
 __mdiobus_register+0xe6c/0x11a0 drivers/net/phy/mdio_bus.c:589
 __devm_mdiobus_register+0x18f/0x2f0 drivers/net/phy/mdio_devres.c:87
 ax88772_init_mdio drivers/net/usb/asix_devices.c:676 [inline]
 ax88772_bind+0x10b1/0x1770 drivers/net/usb/asix_devices.c:786
 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:752
 driver_probe_device drivers/base/dd.c:782 [inline]
 __device_attach_driver+0x79f/0x1120 drivers/base/dd.c:899
 bus_for_each_drv+0x2d6/0x3f0 drivers/base/bus.c:427
 __device_attach+0x593/0x8e0 drivers/base/dd.c:970
 device_initial_probe+0x4a/0x60 drivers/base/dd.c:1017
 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:752
 driver_probe_device drivers/base/dd.c:782 [inline]
 __device_attach_driver+0x79f/0x1120 drivers/base/dd.c:899
 bus_for_each_drv+0x2d6/0x3f0 drivers/base/bus.c:427
 __device_attach+0x593/0x8e0 drivers/base/dd.c:970
 device_initial_probe+0x4a/0x60 drivers/base/dd.c:1017
 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 smsr.i created at:
 asix_mdio_read+0xaf/0xa40 drivers/net/usb/asix_common.c:499
 asix_mdio_bus_read+0xba/0xe0 drivers/net/usb/asix_common.c:558

CPU: 0 PID: 7 Comm: kworker/0:1 Not tainted 5.17.0-rc4-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: usb_hub_wq hub_event
=====================================================

Crashes (1582):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2022/03/09 08:52 https://github.com/google/kmsan.git master 724946410067 9e8eaa75 .config console log report syz C ci-upstream-kmsan-gce KMSAN: uninit-value in asix_mdio_read
2022/03/18 20:03 https://github.com/google/kmsan.git master 97c7732c2bb6 e2d91b1d .config console log report syz ci-upstream-kmsan-gce KMSAN: uninit-value in asix_mdio_read
2022/03/15 15:22 https://github.com/google/kmsan.git master 724946410067 9e8eaa75 .config console log report syz ci-upstream-kmsan-gce KMSAN: uninit-value in asix_mdio_read
2022/03/09 07:21 https://github.com/google/kmsan.git master 724946410067 9e8eaa75 .config console log report syz ci-upstream-kmsan-gce KMSAN: uninit-value in asix_mdio_read
2022/05/17 04:39 https://github.com/google/kmsan.git master d6e2c8c7eb40 744a39e2 .config console log report info ci-upstream-kmsan-gce KMSAN: uninit-value in asix_mdio_read
2022/05/16 07:41 https://github.com/google/kmsan.git master d6e2c8c7eb40 744a39e2 .config console log report info ci-upstream-kmsan-gce KMSAN: uninit-value in asix_mdio_read
2022/05/15 16:12 https://github.com/google/kmsan.git master d6e2c8c7eb40 744a39e2 .config console log report info ci-upstream-kmsan-gce KMSAN: uninit-value in asix_mdio_read
2022/04/29 20:45 https://github.com/google/kmsan.git master d6e2c8c7eb40 44a5ca63 .config console log report info ci-upstream-kmsan-gce KMSAN: uninit-value in asix_mdio_read
2022/04/22 14:06 https://github.com/google/kmsan.git master 33d9269ef6e0 2738b391 .config console log report info ci-upstream-kmsan-gce KMSAN: uninit-value in asix_mdio_read
2022/04/22 12:35 https://github.com/google/kmsan.git master 33d9269ef6e0 2738b391 .config console log report info ci-upstream-kmsan-gce KMSAN: uninit-value in asix_mdio_read
2022/04/22 10:34 https://github.com/google/kmsan.git master 33d9269ef6e0 2738b391 .config console log report info ci-upstream-kmsan-gce KMSAN: uninit-value in asix_mdio_read
2022/04/22 09:18 https://github.com/google/kmsan.git master 33d9269ef6e0 2738b391 .config console log report info ci-upstream-kmsan-gce KMSAN: uninit-value in asix_mdio_read
2022/04/22 06:04 https://github.com/google/kmsan.git master 33d9269ef6e0 2738b391 .config console log report info ci-upstream-kmsan-gce KMSAN: uninit-value in asix_mdio_read
2022/04/22 03:42 https://github.com/google/kmsan.git master 33d9269ef6e0 2738b391 .config console log report info ci-upstream-kmsan-gce KMSAN: uninit-value in asix_mdio_read
2022/04/22 02:36 https://github.com/google/kmsan.git master 33d9269ef6e0 2738b391 .config console log report info ci-upstream-kmsan-gce KMSAN: uninit-value in asix_mdio_read
2022/04/22 01:21 https://github.com/google/kmsan.git master 33d9269ef6e0 2738b391 .config console log report info ci-upstream-kmsan-gce KMSAN: uninit-value in asix_mdio_read
2022/04/21 23:29 https://github.com/google/kmsan.git master 33d9269ef6e0 2738b391 .config console log report info ci-upstream-kmsan-gce KMSAN: uninit-value in asix_mdio_read
2022/04/21 22:00 https://github.com/google/kmsan.git master 33d9269ef6e0 2738b391 .config console log report info ci-upstream-kmsan-gce KMSAN: uninit-value in asix_mdio_read
2022/04/21 20:17 https://github.com/google/kmsan.git master 33d9269ef6e0 2738b391 .config console log report info ci-upstream-kmsan-gce KMSAN: uninit-value in asix_mdio_read
2022/04/21 18:01 https://github.com/google/kmsan.git master 33d9269ef6e0 2738b391 .config console log report info ci-upstream-kmsan-gce KMSAN: uninit-value in asix_mdio_read
2022/04/21 16:53 https://github.com/google/kmsan.git master 33d9269ef6e0 2738b391 .config console log report info ci-upstream-kmsan-gce KMSAN: uninit-value in asix_mdio_read
2022/04/21 14:09 https://github.com/google/kmsan.git master 33d9269ef6e0 d4befee1 .config console log report info ci-upstream-kmsan-gce KMSAN: uninit-value in asix_mdio_read
2022/04/21 10:49 https://github.com/google/kmsan.git master 33d9269ef6e0 d4befee1 .config console log report info ci-upstream-kmsan-gce KMSAN: uninit-value in asix_mdio_read
2022/04/21 08:36 https://github.com/google/kmsan.git master 33d9269ef6e0 d4befee1 .config console log report info ci-upstream-kmsan-gce KMSAN: uninit-value in asix_mdio_read
2022/04/21 07:20 https://github.com/google/kmsan.git master 33d9269ef6e0 d4befee1 .config console log report info ci-upstream-kmsan-gce KMSAN: uninit-value in asix_mdio_read
2022/04/21 05:11 https://github.com/google/kmsan.git master 33d9269ef6e0 d4befee1 .config console log report info ci-upstream-kmsan-gce KMSAN: uninit-value in asix_mdio_read
2022/04/21 03:52 https://github.com/google/kmsan.git master 33d9269ef6e0 d4befee1 .config console log report info ci-upstream-kmsan-gce KMSAN: uninit-value in asix_mdio_read
2022/04/21 00:07 https://github.com/google/kmsan.git master 33d9269ef6e0 160a3f31 .config console log report info ci-upstream-kmsan-gce KMSAN: uninit-value in asix_mdio_read
2022/04/20 21:08 https://github.com/google/kmsan.git master 33d9269ef6e0 160a3f31 .config console log report info ci-upstream-kmsan-gce KMSAN: uninit-value in asix_mdio_read
2022/04/20 18:08 https://github.com/google/kmsan.git master 33d9269ef6e0 160a3f31 .config console log report info ci-upstream-kmsan-gce KMSAN: uninit-value in asix_mdio_read
2022/04/20 16:26 https://github.com/google/kmsan.git master 33d9269ef6e0 160a3f31 .config console log report info ci-upstream-kmsan-gce KMSAN: uninit-value in asix_mdio_read
2022/04/20 11:31 https://github.com/google/kmsan.git master 33d9269ef6e0 7d7bc738 .config console log report info ci-upstream-kmsan-gce KMSAN: uninit-value in asix_mdio_read
2022/04/20 06:42 https://github.com/google/kmsan.git master 33d9269ef6e0 7d7bc738 .config console log report info ci-upstream-kmsan-gce KMSAN: uninit-value in asix_mdio_read
2022/04/20 05:12 https://github.com/google/kmsan.git master 33d9269ef6e0 7d7bc738 .config console log report info ci-upstream-kmsan-gce KMSAN: uninit-value in asix_mdio_read
2022/04/20 03:47 https://github.com/google/kmsan.git master 33d9269ef6e0 7d7bc738 .config console log report info ci-upstream-kmsan-gce KMSAN: uninit-value in asix_mdio_read
2022/04/20 00:57 https://github.com/google/kmsan.git master 33d9269ef6e0 7d7bc738 .config console log report info ci-upstream-kmsan-gce KMSAN: uninit-value in asix_mdio_read
2022/04/19 21:02 https://github.com/google/kmsan.git master 33d9269ef6e0 c334415e .config console log report info ci-upstream-kmsan-gce KMSAN: uninit-value in asix_mdio_read
2022/04/19 19:58 https://github.com/google/kmsan.git master 33d9269ef6e0 c334415e .config console log report info ci-upstream-kmsan-gce KMSAN: uninit-value in asix_mdio_read
2022/04/19 18:25 https://github.com/google/kmsan.git master 33d9269ef6e0 c334415e .config console log report info ci-upstream-kmsan-gce KMSAN: uninit-value in asix_mdio_read
2022/04/19 14:30 https://github.com/google/kmsan.git master 33d9269ef6e0 c334415e .config console log report info ci-upstream-kmsan-gce KMSAN: uninit-value in asix_mdio_read
2022/04/19 09:15 https://github.com/google/kmsan.git master 33d9269ef6e0 8bcc32a6 .config console log report info ci-upstream-kmsan-gce KMSAN: uninit-value in asix_mdio_read
2022/04/19 07:13 https://github.com/google/kmsan.git master 33d9269ef6e0 8bcc32a6 .config console log report info ci-upstream-kmsan-gce KMSAN: uninit-value in asix_mdio_read
2022/04/19 06:11 https://github.com/google/kmsan.git master 33d9269ef6e0 8bcc32a6 .config console log report info ci-upstream-kmsan-gce KMSAN: uninit-value in asix_mdio_read
2022/04/19 04:28 https://github.com/google/kmsan.git master 33d9269ef6e0 8bcc32a6 .config console log report info ci-upstream-kmsan-gce KMSAN: uninit-value in asix_mdio_read
2022/04/19 03:10 https://github.com/google/kmsan.git master 33d9269ef6e0 8bcc32a6 .config console log report info ci-upstream-kmsan-gce KMSAN: uninit-value in asix_mdio_read
2022/04/19 01:54 https://github.com/google/kmsan.git master 33d9269ef6e0 8bcc32a6 .config console log report info ci-upstream-kmsan-gce KMSAN: uninit-value in asix_mdio_read
2022/04/19 01:52 https://github.com/google/kmsan.git master 33d9269ef6e0 8bcc32a6 .config console log report info ci-upstream-kmsan-gce KMSAN: uninit-value in asix_mdio_read
2022/03/08 20:47 https://github.com/google/kmsan.git master 724946410067 9e8eaa75 .config console log report info ci-upstream-kmsan-gce KMSAN: uninit-value in asix_mdio_read
2022/03/29 17:00 https://github.com/google/kmsan.git master 1978a14f70af 6bdac766 .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.