syzbot


KMSAN: uninit-value in smsc95xx_reset

Status: fixed on 2023/12/21 03:45
Subsystems: usb
[Documentation on labels]
Reported-by: syzbot+c74c24b43c9ae534f0e0@syzkaller.appspotmail.com
Fix commit: 51a32e828109 net: usb: smsc95xx: Fix uninit-value access in smsc95xx_read_reg
First crash: 1289d, last: 124d
Discussions (3)
Title Replies (including bot) Last reply
[PATCH net] net: usb: smsc95xx: Fix uninit-value access in smsc95xx_read_reg 2 (2) 2023/10/22 10:40
[syzbot] Monthly usb report (Oct 2023) 0 (1) 2023/10/04 07:28
KMSAN: uninit-value in smsc95xx_reset 0 (1) 2020/08/17 17:51
Last patch testing requests (10)
Created Duration User Patch Repo Result
2023/10/05 15:54 25m syoshida@redhat.com patch upstream OK log
2023/06/15 09:34 16m retest repro https://github.com/google/kmsan.git master report log
2023/06/15 09:34 16m retest repro https://github.com/google/kmsan.git master report log
2023/04/06 08:32 26m retest repro https://github.com/google/kmsan.git master report log
2022/12/27 05:31 14m retest repro https://github.com/google/kmsan.git master report log
2022/09/18 03:29 14m retest repro https://github.com/google/kmsan.git master report log
2020/10/02 22:48 21m anant.thazhemadam@gmail.com patch https://github.com/google/kmsan.git master OK
2020/10/02 22:47 21m anant.thazhemadam@gmail.com https://github.com/google/kmsan.git master OK
2020/10/02 05:07 20m anant.thazhemadam@gmail.com patch https://github.com/google/kmsan.git master OK
2020/09/02 23:48 14m dragonjetli@gmail.com https://github.com/google/kmsan.git master report log

Sample crash report:
smsc95xx 1-1:0.0 (unnamed net_device) (uninitialized): Failed to read reg index 0x00000030: -32
smsc95xx 1-1:0.0 (unnamed net_device) (uninitialized): Error reading E2P_CMD
=====================================================
BUG: KMSAN: uninit-value in smsc95xx_reset+0x409/0x25f0 drivers/net/usb/smsc95xx.c:896
 smsc95xx_reset+0x409/0x25f0 drivers/net/usb/smsc95xx.c:896
 smsc95xx_bind+0x9bc/0x22e0 drivers/net/usb/smsc95xx.c:1131
 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.i225 created at:
 smsc95xx_read_reg drivers/net/usb/smsc95xx.c:90 [inline]
 smsc95xx_reset+0x203/0x25f0 drivers/net/usb/smsc95xx.c:892
 smsc95xx_bind+0x9bc/0x22e0 drivers/net/usb/smsc95xx.c:1131

CPU: 1 PID: 773 Comm: kworker/1:2 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 (425):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2023/09/16 09:13 upstream e42bebf6db29 0b6a67ac .config strace log report syz C [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce KMSAN: uninit-value in smsc95xx_reset
2023/07/06 06:38 https://github.com/google/kmsan.git master 257152fe29be ba5dba36 .config strace log report syz C [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce KMSAN: uninit-value in smsc95xx_reset
2023/07/05 13:26 https://github.com/google/kmsan.git master 257152fe29be 80298b6f .config strace log report syz C [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce KMSAN: uninit-value in smsc95xx_reset
2020/08/23 11:32 https://github.com/google/kmsan.git master ce8056d1f79e 1da71ab0 .config console log report syz C ci-upstream-kmsan-gce
2020/08/16 23:41 https://github.com/google/kmsan.git master ce8056d1f79e 424dd8e7 .config console log report syz C ci-upstream-kmsan-gce
2023/10/26 07:53 upstream 611da07b89fd 72e794c4 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce KMSAN: uninit-value in smsc95xx_reset
2023/10/25 17:40 upstream 4f82870119a4 72e794c4 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce KMSAN: uninit-value in smsc95xx_reset
2023/10/25 07:12 upstream d88520ad73b7 17e6d526 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce KMSAN: uninit-value in smsc95xx_reset
2023/10/24 21:11 upstream d88520ad73b7 17e6d526 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce KMSAN: uninit-value in smsc95xx_reset
2023/10/24 19:50 upstream d88520ad73b7 17e6d526 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce KMSAN: uninit-value in smsc95xx_reset
2023/10/24 19:49 upstream d88520ad73b7 17e6d526 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce KMSAN: uninit-value in smsc95xx_reset
2023/10/24 03:54 upstream e017769f4ce2 af8d2e46 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce KMSAN: uninit-value in smsc95xx_reset
2023/10/23 14:04 upstream 05d3ef8bba77 989a3687 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce KMSAN: uninit-value in smsc95xx_reset
2023/10/23 02:10 upstream fe3cfe869d5e 361b23dc .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce KMSAN: uninit-value in smsc95xx_reset
2023/10/22 22:28 upstream fe3cfe869d5e 361b23dc .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce KMSAN: uninit-value in smsc95xx_reset
2023/10/22 12:42 upstream 1acfd2bd3f0d 361b23dc .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce KMSAN: uninit-value in smsc95xx_reset
2023/10/22 07:44 upstream 1acfd2bd3f0d 361b23dc .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce KMSAN: uninit-value in smsc95xx_reset
2023/10/21 19:58 upstream 9c5d00cb7b6b 361b23dc .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce KMSAN: uninit-value in smsc95xx_reset
2023/10/20 16:47 upstream ce55c22ec8b2 a42250d2 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce KMSAN: uninit-value in smsc95xx_reset
2023/10/19 08:13 upstream dd72f9c7e512 342b9c55 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce KMSAN: uninit-value in smsc95xx_reset
2023/10/17 15:52 upstream 213f891525c2 342b9c55 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce KMSAN: uninit-value in smsc95xx_reset
2023/10/16 08:13 upstream 58720809f527 6388bc36 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce KMSAN: uninit-value in smsc95xx_reset
2023/10/14 07:26 upstream ad7f1baed071 6388bc36 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce KMSAN: uninit-value in smsc95xx_reset
2023/10/14 06:33 upstream ad7f1baed071 6388bc36 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce KMSAN: uninit-value in smsc95xx_reset
2023/10/13 15:24 upstream ce583d5fb9d3 6388bc36 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce KMSAN: uninit-value in smsc95xx_reset
2023/10/13 03:33 upstream 401644852d0b fc170927 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce KMSAN: uninit-value in smsc95xx_reset
2023/10/12 05:14 upstream 8182d7a3f1b8 83165b57 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce KMSAN: uninit-value in smsc95xx_reset
2023/10/12 04:05 upstream 8182d7a3f1b8 83165b57 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce KMSAN: uninit-value in smsc95xx_reset
2023/10/11 21:59 upstream 1c8b86a3799f 83165b57 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce KMSAN: uninit-value in smsc95xx_reset
2023/10/10 23:24 upstream 1c8b86a3799f 83165b57 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce KMSAN: uninit-value in smsc95xx_reset
2023/10/10 19:19 upstream 94f6f0550c62 83165b57 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce KMSAN: uninit-value in smsc95xx_reset
2023/10/09 10:51 upstream 94f6f0550c62 5e837c76 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce KMSAN: uninit-value in smsc95xx_reset
2023/10/09 06:25 upstream 94f6f0550c62 5e837c76 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce KMSAN: uninit-value in smsc95xx_reset
2023/10/09 03:39 upstream 94f6f0550c62 5e837c76 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce KMSAN: uninit-value in smsc95xx_reset
2023/10/06 12:55 upstream b78b18fb8ee1 db17ad9f .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce KMSAN: uninit-value in smsc95xx_reset
2023/10/06 03:06 upstream f291209eca5e db17ad9f .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce KMSAN: uninit-value in smsc95xx_reset
2023/10/06 01:53 upstream f291209eca5e db17ad9f .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce KMSAN: uninit-value in smsc95xx_reset
2023/10/03 11:39 upstream ce36c8b14987 65faba36 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce KMSAN: uninit-value in smsc95xx_reset
2023/10/02 03:13 upstream e402b08634b3 8e26a358 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce KMSAN: uninit-value in smsc95xx_reset
2023/10/01 08:57 upstream 3b517966c561 8e26a358 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce KMSAN: uninit-value in smsc95xx_reset
2023/10/01 03:35 upstream 3b517966c561 8e26a358 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce KMSAN: uninit-value in smsc95xx_reset
2023/10/01 00:33 upstream 9f3ebbef746f 8e26a358 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce KMSAN: uninit-value in smsc95xx_reset
2023/09/30 23:19 upstream 9f3ebbef746f 8e26a358 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce KMSAN: uninit-value in smsc95xx_reset
2023/09/30 16:08 upstream 9f3ebbef746f 8e26a358 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce KMSAN: uninit-value in smsc95xx_reset
2023/09/30 15:04 upstream 9f3ebbef746f 8e26a358 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce KMSAN: uninit-value in smsc95xx_reset
2023/09/29 05:27 upstream 9ed22ae6be81 d265efd8 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce KMSAN: uninit-value in smsc95xx_reset
2023/09/29 05:09 upstream 9ed22ae6be81 d265efd8 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce KMSAN: uninit-value in smsc95xx_reset
2023/09/28 00:12 upstream 0e945134b680 2895a507 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce KMSAN: uninit-value in smsc95xx_reset
2023/09/27 10:46 upstream 0e945134b680 0b6a67ac .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce KMSAN: uninit-value in smsc95xx_reset
2023/09/25 21:09 upstream 6465e260f487 0b6a67ac .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce KMSAN: uninit-value in smsc95xx_reset
2023/10/06 07:00 upstream f291209eca5e db17ad9f .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce-386 KMSAN: uninit-value in smsc95xx_reset
2023/10/01 05:35 upstream 3b517966c561 8e26a358 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce-386 KMSAN: uninit-value in smsc95xx_reset
2020/08/16 23:00 https://github.com/google/kmsan.git master ce8056d1f79e 424dd8e7 .config console log report ci-upstream-kmsan-gce
2021/01/17 07:07 https://github.com/google/kmsan.git master 73d62e81b476 65a7a854 .config console log report info ci-upstream-kmsan-gce-386
* Struck through repros no longer work on HEAD.