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@xxxxxxxxxxxxxxxxxxxxxxxxx> 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@xxxxxxxxxxxxxxxxxxxxxxxxx > > 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@xxxxxxxxxxxxxxxx. > > 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
