Hello,
syzbot tried to test the proposed patch but build/boot failed:
7.079268] usbcore: registered new interface driver sunplus
[ 17.080920] usbcore: registered new interface driver stk014
[ 17.082771] usbcore: registered new interface driver stk1135
[ 17.084642] usbcore: registered new interface driver stv0680
[ 17.086433] usbcore: registered new interface driver t613
[ 17.088256] usbcore: registered new interface driver gspca_topro
[ 17.090143] usbcore: registered new interface driver touptek
[ 17.091854] usbcore: registered new interface driver tv8532
[ 17.093570] usbcore: registered new interface driver vc032x
[ 17.095328] usbcore: registered new interface driver vicam
[ 17.097267] usbcore: registered new interface driver xirlink-cit
[ 17.099455] usbcore: registered new interface driver gspca_zc3xx
[ 17.101119] usbcore: registered new interface driver ALi m5602
[ 17.102910] usbcore: registered new interface driver STV06xx
[ 17.104675] usbcore: registered new interface driver gspca_gl860
[ 17.106471] usbcore: registered new interface driver Philips webcam
[ 17.108306] usbcore: registered new interface driver airspy
[ 17.109945] usbcore: registered new interface driver hackrf
[ 17.111609] usbcore: registered new interface driver msi2500
[ 17.113257] cpia2: V4L-Driver for Vision CPiA2 based cameras v3.0.1
[ 17.115764] usbcore: registered new interface driver cpia2
[ 17.117340] au0828: au0828 driver loaded
[ 17.121297] usbcore: registered new interface driver au0828
[ 17.123153] usbcore: registered new interface driver hdpvr
[ 17.126149] usbcore: registered new interface driver pvrusb2
[ 17.128147] pvrusb2: V4L in-tree version:Hauppauge WinTV-PVR-USB2 MPEG2
Encoder/Tuner
[ 17.130340] pvrusb2: Debug mask is 31 (0x1f)
[ 17.132015] usbcore: registered new interface driver usbvision
[ 17.132664] input: ImExPS/2 Generic Explorer Mouse as
/devices/platform/i8042/serio1/input/input8
[ 17.133637] USBVision USB Video Device Driver for Linux : 0.9.11
[ 17.134008] usbcore: registered new interface driver stk1160
[ 17.140074] usbcore: registered new interface driver cx231xx
[ 17.142056] usbcore: registered new interface driver tm6000
[ 17.144211] usbcore: registered new interface driver em28xx
[ 17.146024] em28xx: Registered (Em28xx v4l2 Extension) extension
[ 17.147792] em28xx: Registered (Em28xx Audio Extension) extension
[ 17.149521] em28xx: Registered (Em28xx dvb Extension) extension
[ 17.151245] em28xx: Registered (Em28xx Input Extension) extension
[ 17.153276] usbcore: registered new interface driver usbtv
[ 17.155246] usbcore: registered new interface driver Abilis Systems
as10x usb driver
[ 17.157899] smssdio: Siano SMS1xxx SDIO driver
[ 17.159173] smssdio: Copyright Pierre Ossman
[ 17.160941] usbcore: registered new interface driver radioshark
[ 17.162776] usbcore: registered new interface driver radioshark2
[ 17.164838] usbcore: registered new interface driver dsbr100
[ 17.166823] usbcore: registered new interface driver radio-si470x
[ 17.168965] usbcore: registered new interface driver radio-mr800
[ 17.171460] usbcore: registered new interface driver radio-keene
[ 17.173618] usbcore: registered new interface driver radio-ma901
[ 17.175549] usbcore: registered new interface driver radio-raremono
[ 17.177513] pps_ldisc: PPS line discipline registered
[ 17.178985] pps_parport: parallel port PPS client
[ 17.181262] Driver for 1-wire Dallas network protocol.
[ 17.183111] usbcore: registered new interface driver DS9490R
[ 17.185167] w1_f0d_init()
[ 17.188107] applesmc: supported laptop not found!
[ 17.189432] applesmc: driver init failed (ret=-19)!
[ 17.196126] pc87360: PC8736x not detected, module not inserted
[ 17.200018] intel_powerclamp: CPU does not support MWAIT
[ 17.202620] usbcore: registered new interface driver pcwd_usb
[ 17.204243] acquirewdt: WDT driver for Acquire single board computer
initialising
[ 17.206868] acquirewdt: I/O address 0x0043 already in use
[ 17.208431] acquirewdt: probe of acquirewdt failed with error -5
[ 17.210486] advantechwdt: WDT driver for Advantech single board computer
initialising
[ 17.213912] advantechwdt: initialized. timeout=60 sec (nowayout=0)
[ 17.215828] alim7101_wdt: Steve Hill <steve@xxxxxxxxxxxx>
[ 17.217397] alim7101_wdt: ALi M7101 PMU not present - WDT not set
[ 17.219629] eurotechwdt: can't misc_register on minor=130
[ 17.221394] ib700wdt: WDT driver for IB700 single board computer
initialising
[ 17.223892] ib700wdt: START method I/O 443 is not available
[ 17.225542] ib700wdt: probe of ib700wdt failed with error -5
[ 17.227430] wafer5823wdt: WDT driver for Wafer 5823 single board
computer initialising
[ 17.229585] wafer5823wdt: I/O address 0x0443 already in use
[ 17.231433] iTCO_wdt: Intel TCO WatchDog Timer Driver v1.11
[ 17.232961] iTCO_vendor_support: vendor-support=0
[ 17.234277] it87_wdt: no device
[ 17.235303] sc1200wdt: build 20020303
[ 17.236483] sc1200wdt: io parameter must be specified
[ 17.237991] pc87413_wdt: Version 1.1 at io 0x2E
[ 17.239334] pc87413_wdt: cannot register miscdev on minor=130 (err=-16)
[ 17.241174] nv_tco: NV TCO WatchDog Timer Driver v0.01
[ 17.243122] sbc60xxwdt: I/O address 0x0443 already in use
[ 17.244581] cpu5wdt: misc_register failed
[ 17.245758] smsc37b787_wdt: SMsC 37B787 watchdog component driver 1.1
initialising...
[ 17.249098] smsc37b787_wdt: Unable to register miscdev on minor 130
[ 17.251996] w83877f_wdt: I/O address 0x0443 already in use
[ 17.253586] w83977f_wdt: driver v1.00
[ 17.254539] w83977f_wdt: cannot register miscdev on minor=130 (err=-16)
[ 17.256137] machzwd: MachZ ZF-Logic Watchdog driver initializing
[ 17.257968] machzwd: no ZF-Logic found
[ 17.259106] sbc_epx_c3: cannot register miscdev on minor=130 (err=-16)
[ 17.262166] watchdog: Software Watchdog: cannot register miscdev on
minor=130 (err=-16).
[ 17.264399] watchdog: Software Watchdog: a legacy watchdog module is
probably present.
[ 17.267385] softdog: initialized. soft_noboot=0 soft_margin=60 sec
soft_panic=0 (nowayout=0)
[ 17.272050] device-mapper: uevent: version 1.0.3
[ 17.275001] device-mapper: ioctl: 4.41.0-ioctl (2019-09-16) initialised:
dm-devel@xxxxxxxxxx
[ 17.279301] device-mapper: multipath round-robin: version 1.2.0 loaded
[ 17.281193] device-mapper: multipath queue-length: version 0.2.0 loaded
[ 17.282975] device-mapper: multipath service-time: version 0.3.0 loaded
[ 17.286083] device-mapper: dm-log-userspace: version 1.3.0 loaded
[ 17.287619] device-mapper: raid: Loading target version 1.14.0
[ 17.290659] Bluetooth: HCI UART driver ver 2.3
[ 17.291878] Bluetooth: HCI UART protocol H4 registered
[ 17.293411] Bluetooth: HCI UART protocol BCSP registered
[ 17.294975] Bluetooth: HCI UART protocol LL registered
[ 17.296708] Bluetooth: HCI UART protocol ATH3K registered
[ 17.298379] Bluetooth: HCI UART protocol Three-wire (H5) registered
[ 17.300396] Bluetooth: HCI UART protocol Intel registered
[ 17.302159] Bluetooth: HCI UART protocol Broadcom registered
[ 17.303911] Bluetooth: HCI UART protocol QCA registered
[ 17.305593] Bluetooth: HCI UART protocol AG6XX registered
[ 17.307228] Bluetooth: HCI UART protocol Marvell registered
[ 17.309052] usbcore: registered new interface driver bcm203x
[ 17.311027] usbcore: registered new interface driver bpa10x
[ 17.312814] usbcore: registered new interface driver bfusb
[ 17.314672] usbcore: registered new interface driver btusb
[ 17.316402] usbcore: registered new interface driver ath3k
[ 17.318927] CAPI 2.0 started up with major 68 (middleware)
[ 17.320482] Modular ISDN core version 1.1.29
[ 17.322339] NET: Registered protocol family 34
[ 17.323643] DSP module 2.0
[ 17.324438] mISDN_dsp: DSP clocks every 80 samples. This equals 1
jiffies.
[ 17.334220] mISDN: Layer-1-over-IP driver Rev. 2.00
[ 17.336183] 0 virtual devices registered
[ 17.337904] mISDN: HFC-multi driver 2.03
[ 17.339345] usbcore: registered new interface driver HFC-S_USB
[ 17.341097] AVM Fritz PCI driver Rev. 2.3
[ 17.342450] Sedlbauer Speedfax+ Driver Rev. 2.0
[ 17.343962] Infineon ISDN Driver Rev. 1.0
[ 17.345131] Winbond W6692 PCI driver Rev. 2.0
[ 17.346524] mISDNipac module version 2.0
[ 17.347566] mISDN: ISAR driver Rev. 2.1
[ 17.349541] EDAC sbridge: Ver: 1.1.2
[ 17.351872] intel_pstate: CPU model not supported
[ 17.353915] sdhci: Secure Digital Host Controller Interface driver
[ 17.355724] sdhci: Copyright(c) Pierre Ossman
[ 17.357323] wbsd: Winbond W83L51xD SD/MMC card interface driver
[ 17.359040] wbsd: Copyright(c) Pierre Ossman
[ 17.360684] VUB300 Driver rom wait states = 1C irqpoll timeout = 0400
[ 17.362148] usbcore: registered new interface driver vub300
[ 17.366360] usbcore: registered new interface driver ushc
[ 17.369616] leds_apu: No PC Engines APUv1 board detected. For APUv2,3
support, enable CONFIG_PCENGINES_APU2
[ 17.372753] leds_ss4200: no LED devices found
[ 17.374549] ledtrig-cpu: registered to indicate activity on CPUs
[ 17.382118] i40e: Registered client i40iw
[ 17.384544] usnic_verbs: Cisco VIC (USNIC) Verbs Driver v1.0.3 (December
19, 2013)
[ 17.386865] usnic_verbs:usnic_uiom_init:563:
[ 17.386869] IOMMU required but not present or enabled. USNIC QPs will
not function w/o enabling IOMMU
[ 17.390995] usnic_verbs:usnic_ib_init:667:
[ 17.390998] Unable to initialize umem with err -1
[ 17.394880] qedr: discovered and registered 0 RDMA funcs
[ 17.397724] iscsi: registered transport (iser)
[ 17.400399] No iBFT detected.
[ 17.401890] ccp_crypto: Cannot load: there are no available CCPs
[ 17.409584] hidraw: raw HID events driver (C) Jiri Kosina
[ 17.415367] hv_vmbus: registering driver hid_hyperv
[ 17.425431] usbcore: registered new interface driver usbhid
[ 17.427040] usbhid: USB HID core driver
[ 17.430482] NET: Registered protocol family 40
[ 17.432484] usbcore: registered new interface driver prism2_usb
[ 17.434248] comedi: version 0.7.76 - http://www.comedi.org
[ 17.442331] usbcore: registered new interface driver dt9812
[ 17.444169] usbcore: registered new interface driver ni6501
[ 17.446148] usbcore: registered new interface driver usbdux
[ 17.447821] usbcore: registered new interface driver usbduxfast
[ 17.449661] usbcore: registered new interface driver usbduxsigma
[ 17.451602] usbcore: registered new interface driver vmk80xx
[ 17.460590] usbcore: registered new interface driver r8712u
[ 17.462869] input: Speakup as /devices/virtual/input/input9
[ 17.465528] initialized device: /dev/synth, node (MAJOR 10, MINOR 25)
[ 17.467656] speakup 3.1.6: initialized
[ 17.468822] synth name on entry is: (null)
[ 17.470500] b1pci: revision 1.1.2.2
[ 17.471706] b1: revision 1.1.2.2
[ 17.472722] b1dma: revision 1.1.2.3
[ 17.473758] b1pci: revision 1.1.2.2
[ 17.475796] t1pci: revision 1.1.2.2
[ 17.477072] c4: revision 1.1.2.2
[ 17.478002] gigaset: Driver for Gigaset 307x
[ 17.479352] gigaset: Kernel CAPI interface
[ 17.480985] usbcore: registered new interface driver usb_gigaset
[ 17.482767] usb_gigaset: USB Driver for Gigaset 307x using M105
[ 17.484982] usbcore: registered new interface driver bas_gigaset
[ 17.486787] bas_gigaset: USB Driver for Gigaset 307x
[ 17.488981] usbcore: registered new interface driver hwa-rc
[ 17.490728] usbcore: registered new interface driver i1480-dfu-usb
[ 17.493128] usbcore: registered new interface driver wusb-cbaf
[ 17.495368] usbcore: registered new interface driver hwa-hc
[ 17.497672] asus_wmi: ASUS WMI generic driver loaded
[ 17.499645] asus_wmi: ASUS Management GUID not found
[ 17.502241] asus_wmi: ASUS Management GUID not found
[ 17.506389] compal_laptop: Motherboard not recognized (You could try the
module's force-parameter)
[ 17.508909] dell_smbios: Unable to run on non-Dell system
[ 17.510506] dell_wmi_aio: No known WMI GUID found
[ 17.512351] acer_wmi: Acer Laptop ACPI-WMI Extras
[ 17.513629] acer_wmi: No or unsupported WMI interface, unable to load
[ 17.515490] acerhdf: Acer Aspire One Fan driver, v.0.7.0
[ 17.522065] acerhdf: unknown (unsupported) BIOS version Google/Google
Compute Engine/Google, please report, aborting!
[ 17.525535] hdaps: supported laptop not found!
[ 17.526759] hdaps: driver init failed (ret=-19)!
[ 17.528573] fujitsu_laptop: driver 0.6.0 successfully loaded
[ 17.530289] fujitsu_tablet: Unknown (using defaults)
[ 17.531884] msi_wmi: This machine doesn't have neither MSI-hotkeys nor
backlight through WMI
[ 17.534629] topstar_laptop: ACPI extras driver loaded
[ 17.537353] intel_oaktrail: Platform not recognized (You could try the
module's force-parameter)
[ 17.537625] alienware_wmi: alienware-wmi: No known WMI GUID found
[ 17.543489] hv_utils: Registering HyperV Utility Driver
[ 17.545092] hv_vmbus: registering driver hv_utils
[ 17.546443] hv_vmbus: registering driver hv_balloon
[ 17.551626] ------------[ cut here ]------------
[ 17.552980] DEBUG_LOCKS_WARN_ON(lock->magic != lock)
[ 17.553021] WARNING: CPU: 1 PID: 1 at kernel/locking/mutex.c:938
__mutex_lock+0xb6f/0x1390
[ 17.556664] Kernel panic - not syncing: panic_on_warn set ...
[ 17.558350] CPU: 1 PID: 1 Comm: swapper/0 Not tainted
5.4.0-rc6-syzkaller-00224-gda06441bb485f-dirty #0
[ 17.560767] Hardware name: Google Google Compute Engine/Google Compute
Engine, BIOS Google 01/01/2011
[ 17.560773] Call Trace:
[ 17.560773] dump_stack+0xe8/0x16e
[ 17.560773] ? __mutex_lock+0xb40/0x1390
[ 17.560773] panic+0x2b5/0x708
[ 17.560773] ? add_taint.cold+0x16/0x16
[ 17.560773] ? __probe_kernel_read+0x18d/0x1d0
[ 17.560773] ? __warn.cold+0x14/0x32
[ 17.560773] ? __warn+0xda/0x1d0
[ 17.560773] ? __mutex_lock+0xb6f/0x1390
[ 17.560773] __warn.cold+0x2f/0x32
[ 17.560773] ? trace_hardirqs_on+0x55/0x1e0
[ 17.560773] ? __mutex_lock+0xb6f/0x1390
[ 17.560773] report_bug+0x27b/0x2f0
[ 17.560773] do_error_trap+0x12f/0x1f0
[ 17.560773] ? __mutex_lock+0xb6f/0x1390
[ 17.560773] do_invalid_op+0x37/0x40
[ 17.560773] ? __mutex_lock+0xb6f/0x1390
[ 17.560773] invalid_op+0x23/0x30
[ 17.560773] RIP: 0010:__mutex_lock+0xb6f/0x1390
[ 17.560773] Code: d2 0f 85 eb 07 00 00 44 8b 05 3d 93 c9 05 45 85 c0 0f
85 d1 f5 ff ff 48 c7 c6 60 0d b0 8e 48 c7 c7 60 0b b0 8e e8 0b 5f f1 f2
<0f> 0b e9 b7 f5 ff ff 48 c7 c0 20 57 07 97 48 c1 e8 03 42 0f b6 14
[ 17.560773] RSP: 0000:ffff8880a82efc50 EFLAGS: 00010286
[ 17.560773] RAX: 0000000000000000 RBX: 0000000000000000 RCX:
0000000000000000
[ 17.560773] RDX: 0000000000000000 RSI: ffffffff815d6282 RDI:
ffffed101505df7c
[ 17.560773] RBP: ffff8880a82efdd0 R08: ffff88821ba93180 R09:
fffffbfff237a511
[ 17.560773] R10: fffffbfff237a510 R11: ffffffff91bd2883 R12:
0000000000000000
[ 17.560773] R13: dffffc0000000000 R14: ffffffff97c3e740 R15:
ffffffff962e2098
[ 17.560773] ? vprintk_func+0x82/0x118
[ 17.560773] ? initcall_blacklisted+0x15a/0x1d0
[ 17.560773] ? intel_th_msu_buffer_register+0x6a/0x210
[ 17.560773] ? fs_reclaim_release.part.0+0x5/0x20
[ 17.560773] ? mutex_trylock+0x2d0/0x2d0
[ 17.560773] ? rcu_read_lock_sched_held+0xa1/0xe0
[ 17.560773] ? rcu_read_lock_bh_held+0xc0/0xc0
[ 17.560773] ? __kasan_kmalloc.constprop.0+0xbf/0xd0
[ 17.560773] ? kasan_unpoison_shadow+0x30/0x40
[ 17.560773] ? intel_th_pti_lpp_init+0x67/0x67
[ 17.560773] ? intel_th_msu_buffer_register+0x6a/0x210
[ 17.560773] intel_th_msu_buffer_register+0x6a/0x210
[ 17.560773] ? intel_th_pti_lpp_init+0x67/0x67
[ 17.560773] do_one_initcall+0xf7/0x629
[ 17.560773] ? perf_trace_initcall_level+0x3e0/0x3e0
[ 17.560773] ? rcu_read_lock_sched_held+0xa1/0xe0
[ 17.560773] ? rcu_read_lock_bh_held+0xc0/0xc0
[ 17.560773] ? test_bit+0x2b/0x40
[ 17.560773] kernel_init_freeable+0x4d5/0x5c2
[ 17.560773] ? rest_init+0x376/0x376
[ 17.560773] kernel_init+0x12/0x1ca
[ 17.560773] ret_from_fork+0x3a/0x50
[ 17.560773] Kernel Offset: disabled
[ 17.560773] Rebooting in 86400 seconds..
Error text is too large and was truncated, full error text is at:
https://syzkaller.appspot.com/x/error.txt?x=128b98eae00000
Tested on:
commit: da06441b usb: gadget: add raw-gadget interface
git tree: https://github.com/google/kasan.git
kernel config: https://syzkaller.appspot.com/x/.config?x=6936f12530d77205
dashboard link: https://syzkaller.appspot.com/bug?extid=1d1597a5aa3679c65b9f
compiler: gcc (GCC) 9.0.0 20181231 (experimental)
patch: https://syzkaller.appspot.com/x/patch.diff?x=13d54536e00000
