syzbot


KMSAN: uninit-value in lg4ff_set_autocenter_default

Status: fixed on 2019/11/26 19:44
Subsystems: input usb
[Documentation on labels]
Reported-by: syzbot+1234691fec1b8ceba8b1@syzkaller.appspotmail.com
Fix commit: d9d4b1e46d95 HID: Fix assumption that devices have inputs
First crash: 1676d, last: 1676d
Discussions (2)
Title Replies (including bot) Last reply
[PATCH] HID: hid-lg4ff: Fix uninit-value set_autocenter_default 4 (4) 2019/11/25 15:14
KMSAN: uninit-value in lg4ff_set_autocenter_default 3 (6) 2019/11/25 15:11
Last patch testing requests (2)
Created Duration User Patch Repo Result
2019/11/25 10:20 21m benjamin.tissoires@redhat.com https://github.com/google/kmsan.git master OK
2019/11/05 00:22 21m tranmanphong@gmail.com patch https://github.com/google/kmsan.git master OK

Sample crash report:
logitech 0003:046D:CA03.0001: hidraw0: USB HID v0.00 Device [HID 046d:ca03] on usb-dummy_hcd.3-1/input0
=====================================================
BUG: KMSAN: uninit-value in dev_get_drvdata include/linux/device.h:1388 [inline]
BUG: KMSAN: uninit-value in hid_get_drvdata include/linux/hid.h:628 [inline]
BUG: KMSAN: uninit-value in lg4ff_set_autocenter_default+0x23a/0xa20 drivers/hid/hid-lg4ff.c:477
CPU: 1 PID: 49 Comm: kworker/1:1 Not tainted 5.4.0-rc3+ #0
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+0x128/0x220 mm/kmsan/kmsan_report.c:108
 __msan_warning+0x73/0xe0 mm/kmsan/kmsan_instr.c:245
 dev_get_drvdata include/linux/device.h:1388 [inline]
 hid_get_drvdata include/linux/hid.h:628 [inline]
 lg4ff_set_autocenter_default+0x23a/0xa20 drivers/hid/hid-lg4ff.c:477
 lg4ff_init+0x1e3d/0x33a0 drivers/hid/hid-lg4ff.c:1355
 lg_probe+0x103d/0x1110 drivers/hid/hid-lg.c:850
 hid_device_probe+0x490/0x820 drivers/hid/hid-core.c:2209
 really_probe+0xcc2/0x1f90 drivers/base/dd.c:548
 driver_probe_device+0x1ba/0x510 drivers/base/dd.c:721
 __device_attach_driver+0x5b8/0x790 drivers/base/dd.c:828
 bus_for_each_drv+0x28e/0x3b0 drivers/base/bus.c:430
 __device_attach+0x489/0x750 drivers/base/dd.c:894
 device_initial_probe+0x4a/0x60 drivers/base/dd.c:941
 bus_probe_device+0x131/0x390 drivers/base/bus.c:490
 device_add+0x25b5/0x2df0 drivers/base/core.c:2201
 hid_add_device+0x12f1/0x1440 drivers/hid/hid-core.c:2365
 usbhid_probe+0x152b/0x1880 drivers/hid/usbhid/hid-core.c:1386
 usb_probe_interface+0xd19/0x1310 drivers/usb/core/driver.c:361
 really_probe+0xd91/0x1f90 drivers/base/dd.c:552
 driver_probe_device+0x1ba/0x510 drivers/base/dd.c:721
 __device_attach_driver+0x5b8/0x790 drivers/base/dd.c:828
 bus_for_each_drv+0x28e/0x3b0 drivers/base/bus.c:430
 __device_attach+0x489/0x750 drivers/base/dd.c:894
 device_initial_probe+0x4a/0x60 drivers/base/dd.c:941
 bus_probe_device+0x131/0x390 drivers/base/bus.c:490
 device_add+0x25b5/0x2df0 drivers/base/core.c:2201
 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+0xd91/0x1f90 drivers/base/dd.c:552
 driver_probe_device+0x1ba/0x510 drivers/base/dd.c:721
 __device_attach_driver+0x5b8/0x790 drivers/base/dd.c:828
 bus_for_each_drv+0x28e/0x3b0 drivers/base/bus.c:430
 __device_attach+0x489/0x750 drivers/base/dd.c:894
 device_initial_probe+0x4a/0x60 drivers/base/dd.c:941
 bus_probe_device+0x131/0x390 drivers/base/bus.c:490
 device_add+0x25b5/0x2df0 drivers/base/core.c:2201
 usb_new_device+0x23e5/0x2fb0 drivers/usb/core/hub.c:2536
 hub_port_connect drivers/usb/core/hub.c:5098 [inline]
 hub_port_connect_change drivers/usb/core/hub.c:5213 [inline]
 port_event drivers/usb/core/hub.c:5359 [inline]
 hub_event+0x581d/0x72f0 drivers/usb/core/hub.c:5441
 process_one_work+0x1572/0x1ef0 kernel/workqueue.c:2269
 process_scheduled_works kernel/workqueue.c:2331 [inline]
 worker_thread+0x189c/0x2460 kernel/workqueue.c:2417
 kthread+0x4b5/0x4f0 kernel/kthread.c:256
 ret_from_fork+0x35/0x40 arch/x86/entry/entry_64.S:355

Uninit was created at:
 kmsan_save_stack_with_flags+0x3f/0x90 mm/kmsan/kmsan.c:151
 kmsan_internal_alloc_meta_for_pages mm/kmsan/kmsan_shadow.c:362 [inline]
 kmsan_alloc_page+0x153/0x360 mm/kmsan/kmsan_shadow.c:391
 __alloc_pages_nodemask+0x149d/0x60c0 mm/page_alloc.c:4794
 alloc_pages_current+0x68d/0x9a0 mm/mempolicy.c:2188
 alloc_pages include/linux/gfp.h:511 [inline]
 alloc_slab_page+0x10e/0x12c0 mm/slub.c:1536
 allocate_slab mm/slub.c:1681 [inline]
 new_slab+0x2ca/0x1990 mm/slub.c:1747
 new_slab_objects mm/slub.c:2498 [inline]
 ___slab_alloc+0x1423/0x1fb0 mm/slub.c:2649
 __slab_alloc mm/slub.c:2689 [inline]
 slab_alloc_node mm/slub.c:2752 [inline]
 slab_alloc mm/slub.c:2801 [inline]
 __kmalloc+0x356/0x430 mm/slub.c:3832
 kmalloc include/linux/slab.h:561 [inline]
 kzalloc+0x53/0xb0 include/linux/slab.h:690
 crypto_create_tfm+0xfd/0x640 crypto/api.c:459
 crypto_alloc_tfm+0x339/0x630 crypto/api.c:538
 crypto_alloc_shash+0x99/0xb0 crypto/shash.c:450
 ima_alloc_tfm security/integrity/ima/ima_crypto.c:87 [inline]
 ima_calc_field_array_hash+0x20c/0xbb0 security/integrity/ima/ima_crypto.c:519
 ima_store_template security/integrity/ima/ima_api.c:109 [inline]
 ima_store_measurement+0x4d6/0xd00 security/integrity/ima/ima_api.c:328
 process_measurement+0x1f4e/0x2bd0 security/integrity/ima/ima_main.c:334
 ima_bprm_check+0x13d/0x300 security/integrity/ima/ima_main.c:413
 security_bprm_check+0x192/0x1e0 security/security.c:787
 search_binary_handler+0xb2/0xac0 fs/exec.c:1646
 exec_binprm fs/exec.c:1702 [inline]
 __do_execve_file+0x2218/0x2e90 fs/exec.c:1822
 do_execveat_common fs/exec.c:1868 [inline]
 do_execve fs/exec.c:1885 [inline]
 __do_sys_execve fs/exec.c:1961 [inline]
 __se_sys_execve+0xec/0x110 fs/exec.c:1956
 __x64_sys_execve+0x4a/0x70 fs/exec.c:1956
 do_syscall_64+0xb6/0x160 arch/x86/entry/common.c:291
 entry_SYSCALL_64_after_hwframe+0x63/0xe7
=====================================================

Crashes (1):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2019/10/28 03:15 https://github.com/google/kmsan.git master d86c15562d02 25bb509e .config console log report syz C ci-upstream-kmsan-gce
* Struck through repros no longer work on HEAD.