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* KMSAN: uninit-value in lg4ff_set_autocenter_default
@ 2019-10-28 10:32 syzbot
  2019-11-25 10:13 ` Benjamin Tissoires
  0 siblings, 1 reply; 6+ messages in thread
From: syzbot @ 2019-10-28 10:32 UTC (permalink / raw)
  To: benjamin.tissoires, glider, jikos, linux-input, linux-kernel,
	syzkaller-bugs

Hello,

syzbot found the following crash on:

HEAD commit:    d86c1556 kmsan: add printk_test()
git tree:       https://github.com/google/kmsan.git master
console output: https://syzkaller.appspot.com/x/log.txt?x=125e96e0e00000
kernel config:  https://syzkaller.appspot.com/x/.config?x=c07a3d4f8a59e198
dashboard link: https://syzkaller.appspot.com/bug?extid=1234691fec1b8ceba8b1
compiler:       clang version 9.0.0 (/home/glider/llvm/clang  
80fee25776c2fb61e74c1ecb1a523375c2500b69)
syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=179da024e00000
C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=157f40a8e00000

IMPORTANT: if you fix the bug, please add the following tag to the commit:
Reported-by: syzbot+1234691fec1b8ceba8b1@syzkaller.appspotmail.com

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


---
This bug is generated by a bot. It may contain errors.
See https://goo.gl/tpsmEJ for more information about syzbot.
syzbot engineers can be reached at syzkaller@googlegroups.com.

syzbot will keep track of this bug report. See:
https://goo.gl/tpsmEJ#status for how to communicate with syzbot.
syzbot can test patches for this bug, for details see:
https://goo.gl/tpsmEJ#testing-patches

^ permalink raw reply	[flat|nested] 6+ messages in thread

* Re: KMSAN: uninit-value in lg4ff_set_autocenter_default
  2019-10-28 10:32 KMSAN: uninit-value in lg4ff_set_autocenter_default syzbot
@ 2019-11-25 10:13 ` Benjamin Tissoires
  2019-11-25 10:13   ` syzbot
  0 siblings, 1 reply; 6+ messages in thread
From: Benjamin Tissoires @ 2019-11-25 10:13 UTC (permalink / raw)
  To: syzbot
  Cc: glider, Jiri Kosina, open list:HID CORE LAYER, lkml, syzkaller-bugs

Pretty sure this is already fixed

#syz test: git://git.kernel.org/pub/scm/linux/kernel/git/hid/hid.git for-next


On Mon, Oct 28, 2019 at 11:32 AM syzbot
<syzbot+1234691fec1b8ceba8b1@syzkaller.appspotmail.com> wrote:
>
> Hello,
>
> syzbot found the following crash on:
>
> HEAD commit:    d86c1556 kmsan: add printk_test()
> git tree:       https://github.com/google/kmsan.git master
> console output: https://syzkaller.appspot.com/x/log.txt?x=125e96e0e00000
> kernel config:  https://syzkaller.appspot.com/x/.config?x=c07a3d4f8a59e198
> dashboard link: https://syzkaller.appspot.com/bug?extid=1234691fec1b8ceba8b1
> compiler:       clang version 9.0.0 (/home/glider/llvm/clang
> 80fee25776c2fb61e74c1ecb1a523375c2500b69)
> syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=179da024e00000
> C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=157f40a8e00000
>
> IMPORTANT: if you fix the bug, please add the following tag to the commit:
> Reported-by: syzbot+1234691fec1b8ceba8b1@syzkaller.appspotmail.com
>
> 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
> =====================================================
>
>
> ---
> This bug is generated by a bot. It may contain errors.
> See https://goo.gl/tpsmEJ for more information about syzbot.
> syzbot engineers can be reached at syzkaller@googlegroups.com.
>
> syzbot will keep track of this bug report. See:
> https://goo.gl/tpsmEJ#status for how to communicate with syzbot.
> syzbot can test patches for this bug, for details see:
> https://goo.gl/tpsmEJ#testing-patches


^ permalink raw reply	[flat|nested] 6+ messages in thread

* Re: Re: KMSAN: uninit-value in lg4ff_set_autocenter_default
  2019-11-25 10:13 ` Benjamin Tissoires
@ 2019-11-25 10:13   ` syzbot
  2019-11-25 10:20     ` Benjamin Tissoires
  0 siblings, 1 reply; 6+ messages in thread
From: syzbot @ 2019-11-25 10:13 UTC (permalink / raw)
  To: Benjamin Tissoires
  Cc: benjamin.tissoires, glider, jikos, linux-input, linux-kernel,
	syzkaller-bugs

> Pretty sure this is already fixed

> #syz test: git://git.kernel.org/pub/scm/linux/kernel/git/hid/hid.git  
> for-next

KMSAN bugs can only be tested on https://github.com/google/kmsan.git tree
because KMSAN tool is not upstreamed yet.
See https://goo.gl/tpsmEJ#kmsan-bugs for details.



> On Mon, Oct 28, 2019 at 11:32 AM syzbot
> <syzbot+1234691fec1b8ceba8b1@syzkaller.appspotmail.com> wrote:

>> Hello,

>> syzbot found the following crash on:

>> HEAD commit:    d86c1556 kmsan: add printk_test()
>> git tree:       https://github.com/google/kmsan.git master
>> console output: https://syzkaller.appspot.com/x/log.txt?x=125e96e0e00000
>> kernel config:   
>> https://syzkaller.appspot.com/x/.config?x=c07a3d4f8a59e198
>> dashboard link:  
>> https://syzkaller.appspot.com/bug?extid=1234691fec1b8ceba8b1
>> compiler:       clang version 9.0.0 (/home/glider/llvm/clang
>> 80fee25776c2fb61e74c1ecb1a523375c2500b69)
>> syz repro:       
>> https://syzkaller.appspot.com/x/repro.syz?x=179da024e00000
>> C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=157f40a8e00000

>> IMPORTANT: if you fix the bug, please add the following tag to the  
>> commit:
>> Reported-by: syzbot+1234691fec1b8ceba8b1@syzkaller.appspotmail.com

>> 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
>> =====================================================


>> ---
>> This bug is generated by a bot. It may contain errors.
>> See https://goo.gl/tpsmEJ for more information about syzbot.
>> syzbot engineers can be reached at syzkaller@googlegroups.com.

>> syzbot will keep track of this bug report. See:
>> https://goo.gl/tpsmEJ#status for how to communicate with syzbot.
>> syzbot can test patches for this bug, for details see:
>> https://goo.gl/tpsmEJ#testing-patches


^ permalink raw reply	[flat|nested] 6+ messages in thread

* Re: Re: KMSAN: uninit-value in lg4ff_set_autocenter_default
  2019-11-25 10:13   ` syzbot
@ 2019-11-25 10:20     ` Benjamin Tissoires
  2019-11-25 12:15       ` syzbot
  0 siblings, 1 reply; 6+ messages in thread
From: Benjamin Tissoires @ 2019-11-25 10:20 UTC (permalink / raw)
  To: syzbot
  Cc: glider, Jiri Kosina, open list:HID CORE LAYER, lkml, syzkaller-bugs

Another try:

#syz test: https://github.com/google/kmsan.git master

5.4-rc8 as in this kmsan.git tree should have
d9d4b1e46d9543a82c23f6df03f4ad697dab361b (was included in 5.4-rc6 when
the original syzbot issue was based on a 5.4-rc3)

Cheers,
Benjamin

On Mon, Nov 25, 2019 at 11:14 AM syzbot
<syzbot+1234691fec1b8ceba8b1@syzkaller.appspotmail.com> wrote:
>
> > Pretty sure this is already fixed
>
> > #syz test: git://git.kernel.org/pub/scm/linux/kernel/git/hid/hid.git
> > for-next
>
> KMSAN bugs can only be tested on https://github.com/google/kmsan.git tree
> because KMSAN tool is not upstreamed yet.
> See https://goo.gl/tpsmEJ#kmsan-bugs for details.
>
>
>
> > On Mon, Oct 28, 2019 at 11:32 AM syzbot
> > <syzbot+1234691fec1b8ceba8b1@syzkaller.appspotmail.com> wrote:
>
> >> Hello,
>
> >> syzbot found the following crash on:
>
> >> HEAD commit:    d86c1556 kmsan: add printk_test()
> >> git tree:       https://github.com/google/kmsan.git master
> >> console output: https://syzkaller.appspot.com/x/log.txt?x=125e96e0e00000
> >> kernel config:
> >> https://syzkaller.appspot.com/x/.config?x=c07a3d4f8a59e198
> >> dashboard link:
> >> https://syzkaller.appspot.com/bug?extid=1234691fec1b8ceba8b1
> >> compiler:       clang version 9.0.0 (/home/glider/llvm/clang
> >> 80fee25776c2fb61e74c1ecb1a523375c2500b69)
> >> syz repro:
> >> https://syzkaller.appspot.com/x/repro.syz?x=179da024e00000
> >> C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=157f40a8e00000
>
> >> IMPORTANT: if you fix the bug, please add the following tag to the
> >> commit:
> >> Reported-by: syzbot+1234691fec1b8ceba8b1@syzkaller.appspotmail.com
>
> >> 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
> >> =====================================================
>
>
> >> ---
> >> This bug is generated by a bot. It may contain errors.
> >> See https://goo.gl/tpsmEJ for more information about syzbot.
> >> syzbot engineers can be reached at syzkaller@googlegroups.com.
>
> >> syzbot will keep track of this bug report. See:
> >> https://goo.gl/tpsmEJ#status for how to communicate with syzbot.
> >> syzbot can test patches for this bug, for details see:
> >> https://goo.gl/tpsmEJ#testing-patches
>


^ permalink raw reply	[flat|nested] 6+ messages in thread

* Re: KMSAN: uninit-value in lg4ff_set_autocenter_default
  2019-11-25 10:20     ` Benjamin Tissoires
@ 2019-11-25 12:15       ` syzbot
  2019-11-25 15:11         ` Benjamin Tissoires
  0 siblings, 1 reply; 6+ messages in thread
From: syzbot @ 2019-11-25 12:15 UTC (permalink / raw)
  To: benjamin.tissoires, glider, jikos, linux-input, linux-kernel,
	syzkaller-bugs

Hello,

syzbot has tested the proposed patch and the reproducer did not trigger  
crash:

Reported-and-tested-by:  
syzbot+1234691fec1b8ceba8b1@syzkaller.appspotmail.com

Tested on:

commit:         4a1d41e3 net: kasan: kmsan: support CONFIG_GENERIC_CSUM on..
git tree:       https://github.com/google/kmsan.git master
kernel config:  https://syzkaller.appspot.com/x/.config?x=a8247e2b2298af08
dashboard link: https://syzkaller.appspot.com/bug?extid=1234691fec1b8ceba8b1
compiler:       clang version 9.0.0 (/home/glider/llvm/clang  
80fee25776c2fb61e74c1ecb1a523375c2500b69)

Note: testing is done by a robot and is best-effort only.

^ permalink raw reply	[flat|nested] 6+ messages in thread

* Re: KMSAN: uninit-value in lg4ff_set_autocenter_default
  2019-11-25 12:15       ` syzbot
@ 2019-11-25 15:11         ` Benjamin Tissoires
  0 siblings, 0 replies; 6+ messages in thread
From: Benjamin Tissoires @ 2019-11-25 15:11 UTC (permalink / raw)
  To: syzbot
  Cc: glider, Jiri Kosina, open list:HID CORE LAYER, lkml, syzkaller-bugs

#syz fix: HID: Fix assumption that devices have inputs

Looks like d9d4b1e46d9543a82c23f6df03f4ad697dab361b was the proper fix

Cheers,
Benjamin

On Mon, Nov 25, 2019 at 1:15 PM syzbot
<syzbot+1234691fec1b8ceba8b1@syzkaller.appspotmail.com> wrote:
>
> Hello,
>
> syzbot has tested the proposed patch and the reproducer did not trigger
> crash:
>
> Reported-and-tested-by:
> syzbot+1234691fec1b8ceba8b1@syzkaller.appspotmail.com
>
> Tested on:
>
> commit:         4a1d41e3 net: kasan: kmsan: support CONFIG_GENERIC_CSUM on..
> git tree:       https://github.com/google/kmsan.git master
> kernel config:  https://syzkaller.appspot.com/x/.config?x=a8247e2b2298af08
> dashboard link: https://syzkaller.appspot.com/bug?extid=1234691fec1b8ceba8b1
> compiler:       clang version 9.0.0 (/home/glider/llvm/clang
> 80fee25776c2fb61e74c1ecb1a523375c2500b69)
>
> Note: testing is done by a robot and is best-effort only.
>


^ permalink raw reply	[flat|nested] 6+ messages in thread

end of thread, back to index

Thread overview: 6+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2019-10-28 10:32 KMSAN: uninit-value in lg4ff_set_autocenter_default syzbot
2019-11-25 10:13 ` Benjamin Tissoires
2019-11-25 10:13   ` syzbot
2019-11-25 10:20     ` Benjamin Tissoires
2019-11-25 12:15       ` syzbot
2019-11-25 15:11         ` Benjamin Tissoires

Linux Input Archive on lore.kernel.org

Archives are clonable:
	git clone --mirror https://lore.kernel.org/linux-input/0 linux-input/git/0.git

	# If you have public-inbox 1.1+ installed, you may
	# initialize and index your mirror using the following commands:
	public-inbox-init -V2 linux-input linux-input/ https://lore.kernel.org/linux-input \
		linux-input@vger.kernel.org
	public-inbox-index linux-input

Example config snippet for mirrors

Newsgroup available over NNTP:
	nntp://nntp.lore.kernel.org/org.kernel.vger.linux-input


AGPL code for this site: git clone https://public-inbox.org/public-inbox.git