syzbot


KMSAN: uninit-value in hfcsusb_probe

Status: auto-obsoleted due to no activity on 2022/12/11 12:58
Subsystems: isdn4linux usb
[Documentation on labels]
First crash: 1753d, last: 1730d
Last patch testing requests (2)
Created Duration User Patch Repo Result
2022/12/11 03:31 20m retest repro https://github.com/google/kmsan.git master OK log
2022/09/01 23:27 7m retest repro https://github.com/google/kmsan.git master error OK

Sample crash report:
usb 1-1: string descriptor 0 read error: -22
usb 1-1: New USB device found, idVendor=07fa, idProduct=0846, bcdDevice=56.6d
usb 1-1: New USB device strings: Mfr=5, Product=127, SerialNumber=255
HFC-S_USB: probe of 1-1:255.1 failed with error -5
HFC-S USB: probing interface(1) actalt(32) minor(-1)
hfc_usb: probe of 1-1:255.1 failed with error -5
==================================================================
BUG: KMSAN: uninit-value in hfcsusb_probe+0xf46/0x4db0 drivers/isdn/hardware/mISDN/hfcsusb.c:1962
CPU: 1 PID: 17 Comm: kworker/1:0 Not tainted 5.2.0+ #15
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: usb_hub_wq hub_event
Call Trace:
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x191/0x1f0 lib/dump_stack.c:113
 kmsan_report+0x162/0x2d0 mm/kmsan/kmsan_report.c:109
 __msan_warning+0x75/0xe0 mm/kmsan/kmsan_instr.c:294
 hfcsusb_probe+0xf46/0x4db0 drivers/isdn/hardware/mISDN/hfcsusb.c:1962
 usb_probe_interface+0xd19/0x1310 drivers/usb/core/driver.c:361
 really_probe+0x1344/0x1d90 drivers/base/dd.c:513
 driver_probe_device+0x1ba/0x510 drivers/base/dd.c:670
 __device_attach_driver+0x5b8/0x790 drivers/base/dd.c:777
 bus_for_each_drv+0x28e/0x3b0 drivers/base/bus.c:454
 __device_attach+0x489/0x750 drivers/base/dd.c:843
 device_initial_probe+0x4a/0x60 drivers/base/dd.c:890
 bus_probe_device+0x131/0x390 drivers/base/bus.c:514
 device_add+0x25b5/0x2df0 drivers/base/core.c:2111
 usb_set_configuration+0x309f/0x3710 drivers/usb/core/message.c:2027
 generic_probe+0xe7/0x280 drivers/usb/core/generic.c:210
 usb_probe_device+0x146/0x200 drivers/usb/core/driver.c:266
 really_probe+0x1344/0x1d90 drivers/base/dd.c:513
 driver_probe_device+0x1ba/0x510 drivers/base/dd.c:670
 __device_attach_driver+0x5b8/0x790 drivers/base/dd.c:777
 bus_for_each_drv+0x28e/0x3b0 drivers/base/bus.c:454
 __device_attach+0x489/0x750 drivers/base/dd.c:843
 device_initial_probe+0x4a/0x60 drivers/base/dd.c:890
 bus_probe_device+0x131/0x390 drivers/base/bus.c:514
 device_add+0x25b5/0x2df0 drivers/base/core.c:2111
 usb_new_device+0x23e5/0x2fb0 drivers/usb/core/hub.c:2534
 hub_port_connect drivers/usb/core/hub.c:5089 [inline]
 hub_port_connect_change drivers/usb/core/hub.c:5204 [inline]
 port_event drivers/usb/core/hub.c:5350 [inline]
 hub_event+0x5853/0x7320 drivers/usb/core/hub.c:5432
 process_one_work+0x1572/0x1f00 kernel/workqueue.c:2269
 worker_thread+0x111b/0x2460 kernel/workqueue.c:2415
 kthread+0x4b5/0x4f0 kernel/kthread.c:256
 ret_from_fork+0x35/0x40 arch/x86/entry/entry_64.S:355

Local variable description: ----bookmark@__wake_up_common_lock
Variable was created at:
 __wake_up_common_lock+0xa2/0x3a0 kernel/sched/wait.c:116
 __wake_up_sync_key+0xcf/0x120 kernel/sched/wait.c:200
==================================================================

Crashes (4):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2019/07/24 09:37 https://github.com/google/kmsan.git master beaab8a31e0d de453f34 .config console log report syz C ci-upstream-kmsan-gce
2019/07/24 08:12 https://github.com/google/kmsan.git master beaab8a31e0d de453f34 .config console log report ci-upstream-kmsan-gce
2019/07/11 20:21 https://github.com/google/kmsan.git master 7280182c67ba 186a30b9 .config console log report ci-upstream-kmsan-gce
2019/07/01 23:36 https://github.com/google/kmsan.git master 41550654dedf 907bf746 .config console log report ci-upstream-kmsan-gce
* Struck through repros no longer work on HEAD.