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AJvYcCWPvyQIeLDXZgjKMnvYmz6GvqFbEbJEJ7BAgsA9IbJEMjyG0ppmH+cwmaRIpVu7owHWo5HrUQ4pAktG7VM=@vger.kernel.org X-Gm-Message-State: AOJu0YyMY6IlEE3PdXZ9CASP8fDVPyZbTKOhrg6CkIS4khEFpn/lBfZh AXox41FmHeQzrtNQHHzVRw+vjuQiKJR4enpCwfKTc3S+LyGhL7YP3G1OHUa8l10TcyLk2qRgDry 87hFQ4FuHx16oq0HKC+HDPSp/OClskKmSFeB4pSkaP4wTYsdqk8Rw+S4= X-Google-Smtp-Source: AGHT+IGxTJOVrI0MSMeqxPXpiC37uS2AdCA8geNNX6zKVQkdMJ5IpkK0xyNXz4oyes+iPp8ovG3bF4bt9pw8Ebcf5XipM5U6DzMa Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Received: by 2002:a05:6e02:1f04:b0:3cf:b87b:8fde with SMTP id e9e14a558f8ab-3d2caefdc5cmr86598605ab.17.1740304261336; Sun, 23 Feb 2025 01:51:01 -0800 (PST) Date: Sun, 23 Feb 2025 01:51:01 -0800 In-Reply-To: X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <67baef85.050a0220.bbfd1.0013.GAE@google.com> Subject: Re: [syzbot] [input?] [usb?] KASAN: slab-use-after-free Read in steam_input_open From: syzbot To: eadavis@qq.com, linux-kernel@vger.kernel.org, syzkaller-bugs@googlegroups.com Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable Hello, syzbot tried to test the proposed patch but the build/boot failed: ource [io 0x0000-0x0cf7 window] [ 3.463325][ T1] pci_bus 0000:00: root bus resource [io 0x0d00-0xfff= f window] [ 3.465986][ T1] pci_bus 0000:00: root bus resource [mem 0x000a0000-0= x000bffff window] [ 3.469157][ T1] pci_bus 0000:00: root bus resource [mem 0xc0000000-0= xfebfefff window] [ 3.472205][ T1] pci_bus 0000:00: root bus resource [bus 00-ff] [ 3.473782][ T1] pci 0000:00:00.0: [8086:1237] type 00 class 0x060000= conventional PCI endpoint [ 3.484482][ T1] pci 0000:00:01.0: [8086:7110] type 00 class 0x060100= conventional PCI endpoint [ 3.498697][ T1] pci 0000:00:01.3: [8086:7113] type 00 class 0x068000= conventional PCI endpoint [ 3.509581][ T1] pci 0000:00:01.3: quirk: [io 0xb000-0xb03f] claimed= by PIIX4 ACPI [ 3.517550][ T1] pci 0000:00:03.0: [1af4:1004] type 00 class 0x000000= conventional PCI endpoint [ 3.535057][ T1] pci 0000:00:03.0: BAR 0 [io 0xc000-0xc03f] [ 3.537097][ T1] pci 0000:00:03.0: BAR 1 [mem 0xfe800000-0xfe80007f] [ 3.544872][ T1] pci 0000:00:04.0: [1af4:1000] type 00 class 0x020000= conventional PCI endpoint [ 3.561393][ T1] pci 0000:00:04.0: BAR 0 [io 0xc040-0xc07f] [ 3.563343][ T1] pci 0000:00:04.0: BAR 1 [mem 0xfe801000-0xfe80107f] [ 3.570338][ T1] pci 0000:00:05.0: [1ae0:a002] type 00 class 0x030000= conventional PCI endpoint [ 3.585610][ T1] pci 0000:00:05.0: BAR 0 [mem 0xfe000000-0xfe7fffff] [ 3.588960][ T1] pci 0000:00:05.0: Video device with shadowed ROM at = [mem 0x000c0000-0x000dffff] [ 3.597791][ T1] pci 0000:00:06.0: [1af4:1002] type 00 class 0x00ff00= conventional PCI endpoint [ 3.611209][ T1] pci 0000:00:06.0: BAR 0 [io 0xc080-0xc09f] [ 3.617655][ T1] pci 0000:00:07.0: [1af4:1005] type 00 class 0x00ff00= conventional PCI endpoint [ 3.632109][ T1] pci 0000:00:07.0: BAR 0 [io 0xc0a0-0xc0bf] [ 3.635623][ T1] pci 0000:00:07.0: BAR 1 [mem 0xfe802000-0xfe80203f] [ 3.669511][ T1] ACPI: PCI: Interrupt link LNKA configured for IRQ 10 [ 3.677322][ T1] ACPI: PCI: Interrupt link LNKB configured for IRQ 10 [ 3.687243][ T1] ACPI: PCI: Interrupt link LNKC configured for IRQ 11 [ 3.696353][ T1] ACPI: PCI: Interrupt link LNKD configured for IRQ 11 [ 3.702587][ T1] ACPI: PCI: Interrupt link LNKS configured for IRQ 9 [ 3.721105][ T1] iommu: Default domain type: Translated [ 3.722975][ T1] iommu: DMA domain TLB invalidation policy: lazy mode [ 3.727197][ T1] SCSI subsystem initialized [ 3.745508][ T1] ACPI: bus type USB registered [ 3.747961][ T1] usbcore: registered new interface driver usbfs [ 3.750545][ T1] usbcore: registered new interface driver hub [ 3.752997][ T1] usbcore: registered new device driver usb [ 3.755635][ T1] mc: Linux media interface: v0.10 [ 3.757897][ T1] videodev: Linux video capture interface: v2.00 [ 3.761166][ T1] pps_core: LinuxPPS API ver. 1 registered [ 3.763309][ T1] pps_core: Software ver. 5.3.6 - Copyright 2005-2007 = Rodolfo Giometti [ 3.767164][ T1] PTP clock support registered [ 3.784211][ T1] EDAC MC: Ver: 3.0.0 [ 3.807359][ T1] Advanced Linux Sound Architecture Driver Initialized= . [ 3.817665][ T1] Bluetooth: Core ver 2.22 [ 3.819562][ T1] NET: Registered PF_BLUETOOTH protocol family [ 3.821239][ T1] Bluetooth: HCI device and connection manager initial= ized [ 3.822978][ T1] Bluetooth: HCI socket layer initialized [ 3.823341][ T1] Bluetooth: L2CAP socket layer initialized [ 3.824795][ T1] Bluetooth: SCO socket layer initialized [ 3.826338][ T1] NET: Registered PF_ATMPVC protocol family [ 3.827830][ T1] NET: Registered PF_ATMSVC protocol family [ 3.829620][ T1] NetLabel: Initializing [ 3.830990][ T1] NetLabel: domain hash size =3D 128 [ 3.833307][ T1] NetLabel: protocols =3D UNLABELED CIPSOv4 CALIPSO [ 3.836266][ T1] NetLabel: unlabeled traffic allowed by default [ 3.843290][ T1] nfc: nfc_init: NFC Core ver 0.1 [ 3.843801][ T1] NET: Registered PF_NFC protocol family [ 3.846041][ T1] PCI: Using ACPI for IRQ routing [ 3.849665][ T1] pci 0000:00:05.0: vgaarb: setting as boot VGA device [ 3.852568][ T1] pci 0000:00:05.0: vgaarb: bridge control possible [ 3.853287][ T1] pci 0000:00:05.0: vgaarb: VGA device added: decodes= =3Dio+mem,owns=3Dio+mem,locks=3Dnone [ 3.863312][ T1] vgaarb: loaded [ 3.918207][ T1] clocksource: Switched to clocksource kvm-clock [ 3.932462][ T1] VFS: Disk quotas dquot_6.6.0 [ 3.934309][ T1] VFS: Dquot-cache hash table entries: 512 (order 0, 4= 096 bytes) [ 3.941793][ T1] pnp: PnP ACPI init [ 3.966334][ T1] pnp: PnP ACPI: found 7 devices [ 4.022143][ T1] clocksource: acpi_pm: mask: 0xffffff max_cycles: 0xf= fffff, max_idle_ns: 2085701024 ns [ 4.026722][ T1] NET: Registered PF_INET protocol family [ 4.029726][ T1] IP idents hash table entries: 131072 (order: 8, 1048= 576 bytes, linear) [ 4.057661][ T1] tcp_listen_portaddr_hash hash table entries: 4096 (o= rder: 6, 294912 bytes, linear) [ 4.061945][ T1] Table-perturb hash table entries: 65536 (order: 6, 2= 62144 bytes, linear) [ 4.065306][ T1] TCP established hash table entries: 65536 (order: 7,= 524288 bytes, linear) [ 4.079908][ T1] TCP bind hash table entries: 65536 (order: 11, 94371= 84 bytes, vmalloc hugepage) [ 4.095435][ T1] TCP: Hash tables configured (established 65536 bind = 65536) [ 4.099377][ T1] UDP hash table entries: 4096 (order: 8, 1048576 byte= s, linear) [ 4.103973][ T1] UDP-Lite hash table entries: 4096 (order: 8, 1048576= bytes, linear) [ 4.109358][ T1] NET: Registered PF_UNIX/PF_LOCAL protocol family [ 4.115024][ T1] RPC: Registered named UNIX socket transport module. [ 4.117573][ T1] RPC: Registered udp transport module. [ 4.119562][ T1] RPC: Registered tcp transport module. [ 4.121568][ T1] RPC: Registered tcp-with-tls transport module. [ 4.123951][ T1] RPC: Registered tcp NFSv4.1 backchannel transport mo= dule. [ 4.132788][ T1] pci_bus 0000:00: resource 4 [io 0x0000-0x0cf7 windo= w] [ 4.135225][ T1] pci_bus 0000:00: resource 5 [io 0x0d00-0xffff windo= w] [ 4.137681][ T1] pci_bus 0000:00: resource 6 [mem 0x000a0000-0x000bff= ff window] [ 4.140403][ T1] pci_bus 0000:00: resource 7 [mem 0xc0000000-0xfebfef= ff window] [ 4.144591][ T1] pci 0000:00:00.0: Limiting direct PCI/PCI transfers [ 4.147415][ T1] PCI: CLS 0 bytes, default 64 [ 4.149454][ T1] PCI-DMA: Using software bounce buffering for IO (SWI= OTLB) [ 4.152150][ T1] software IO TLB: mapped [mem 0x00000000bbffd000-0x00= 000000bfffd000] (64MB) [ 4.162476][ T1] RAPL PMU: API unit is 2^-32 Joules, 0 fixed counters= , 10737418240 ms ovfl timer [ 4.165933][ T1] clocksource: tsc: mask: 0xffffffffffffffff max_cycle= s: 0x1fb63109b96, max_idle_ns: 440795265316 ns [ 4.194080][ T1] clocksource: Switched to clocksource tsc [ 4.198133][ T47] kworker/u8:0 (47) used greatest stack depth: 27904 b= ytes left [ 4.427818][ T57] kworker/u8:0 (57) used greatest stack depth: 27872 b= ytes left [ 4.443204][ T62] kworker/u8:0 (62) used greatest stack depth: 26864 b= ytes left [ 7.013884][ T1] Initialise system trusted keyrings [ 7.016895][ T1] workingset: timestamp_bits=3D40 max_order=3D21 bucke= t_order=3D0 [ 7.023563][ T1] NFS: Registering the id_resolver key type [ 7.025658][ T1] Key type id_resolver registered [ 7.027644][ T1] Key type id_legacy registered [ 7.030687][ T1] 9p: Installing v9fs 9p2000 file system support [ 7.074583][ T1] Key type asymmetric registered [ 7.075691][ T1] Asymmetric key parser 'x509' registered [ 7.077398][ T1] Block layer SCSI generic (bsg) driver version 0.4 lo= aded (major 246) [ 7.080437][ T1] io scheduler mq-deadline registered [ 7.082146][ T1] io scheduler kyber registered [ 7.088789][ T1] usbcore: registered new interface driver udlfb [ 7.093006][ T1] usbcore: registered new interface driver smscufx [ 7.097895][ T1] input: Power Button as /devices/LNXSYSTM:00/LNXPWRBN= :00/input/input0 [ 7.101275][ T1]=20 [ 7.101676][ T1] =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= =3D=3D [ 7.103134][ T1] WARNING: possible recursive locking detected [ 7.105147][ T1] 6.14.0-rc3-syzkaller-00037-gc749f058b437-dirty #0 No= t tainted [ 7.108027][ T1] -------------------------------------------- [ 7.109536][ T1] swapper/0/1 is trying to acquire lock: [ 7.111185][ T1] ffffffff89be7b08 (input_mutex){+.+.}-{4:4}, at: inpu= t_open_device+0x47/0x370 [ 7.111185][ T1]=20 [ 7.111185][ T1] but task is already holding lock: [ 7.111185][ T1] ffffffff89be7b08 (input_mutex){+.+.}-{4:4}, at: inpu= t_register_device+0x98a/0x1130 [ 7.111185][ T1]=20 [ 7.111185][ T1] other info that might help us debug this: [ 7.111185][ T1] Possible unsafe locking scenario: [ 7.111185][ T1]=20 [ 7.111185][ T1] CPU0 [ 7.111185][ T1] ---- [ 7.111185][ T1] lock(input_mutex); [ 7.111185][ T1] lock(input_mutex); [ 7.111185][ T1]=20 [ 7.111185][ T1] *** DEADLOCK *** [ 7.111185][ T1]=20 [ 7.111185][ T1] May be due to missing lock nesting notation [ 7.111185][ T1]=20 [ 7.111185][ T1] 2 locks held by swapper/0/1: [ 7.111185][ T1] #0: ffff888106ab3348 (&dev->mutex){....}-{4:4}, at:= __driver_attach+0x278/0x580 [ 7.111185][ T1] #1: ffffffff89be7b08 (input_mutex){+.+.}-{4:4}, at:= input_register_device+0x98a/0x1130 [ 7.111185][ T1]=20 [ 7.111185][ T1] stack backtrace: [ 7.111185][ T1] CPU: 0 UID: 0 PID: 1 Comm: swapper/0 Not tainted 6.1= 4.0-rc3-syzkaller-00037-gc749f058b437-dirty #0 [ 7.111185][ T1] Hardware name: Google Google Compute Engine/Google C= ompute Engine, BIOS Google 12/27/2024 [ 7.111185][ T1] Call Trace: [ 7.111185][ T1] [ 7.111185][ T1] dump_stack_lvl+0x116/0x1f0 [ 7.111185][ T1] print_deadlock_bug+0x2e3/0x410 [ 7.111185][ T1] __lock_acquire+0x2117/0x3c40 [ 7.111185][ T1] ? __pfx___lock_acquire+0x10/0x10 [ 7.111185][ T1] lock_acquire.part.0+0x11b/0x380 [ 7.111185][ T1] ? input_open_device+0x47/0x370 [ 7.111185][ T1] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 7.111185][ T1] ? rcu_is_watching+0x12/0xc0 [ 7.111185][ T1] ? trace_lock_acquire+0x14e/0x1f0 [ 7.111185][ T1] ? input_register_handle+0x22f/0x5f0 [ 7.111185][ T1] ? input_open_device+0x47/0x370 [ 7.111185][ T1] ? lock_acquire+0x2f/0xb0 [ 7.111185][ T1] ? input_open_device+0x47/0x370 [ 7.111185][ T1] __mutex_lock+0x19b/0xb10 [ 7.111185][ T1] ? input_open_device+0x47/0x370 [ 7.111185][ T1] ? input_open_device+0x47/0x370 [ 7.111185][ T1] ? __pfx___mutex_lock+0x10/0x10 [ 7.111185][ T1] ? __pfx___mutex_unlock_slowpath+0x10/0x10 [ 7.111185][ T1] ? __pfx___might_resched+0x10/0x10 [ 7.111185][ T1] ? input_open_device+0x47/0x370 [ 7.111185][ T1] input_open_device+0x47/0x370 [ 7.111185][ T1] kbd_connect+0x103/0x160 [ 7.111185][ T1] input_attach_handler.isra.0+0x181/0x260 [ 7.111185][ T1] input_register_device+0xa84/0x1130 [ 7.111185][ T1] acpi_button_add+0x57a/0xb70 [ 7.111185][ T1] ? __pfx_acpi_button_notify+0x10/0x10 [ 7.111185][ T1] ? __pfx_acpi_button_add+0x10/0x10 [ 7.111185][ T1] acpi_device_probe+0xc6/0x330 [ 7.111185][ T1] ? driver_sysfs_add+0xa5/0x2d0 [ 7.111185][ T1] ? __pfx_acpi_device_probe+0x10/0x10 [ 7.111185][ T1] really_probe+0x23e/0xa90 [ 7.111185][ T1] __driver_probe_device+0x1de/0x440 [ 7.111185][ T1] driver_probe_device+0x4c/0x1b0 [ 7.111185][ T1] __driver_attach+0x283/0x580 [ 7.111185][ T1] ? __pfx___driver_attach+0x10/0x10 [ 7.111185][ T1] bus_for_each_dev+0x13c/0x1d0 [ 7.111185][ T1] ? __pfx_bus_for_each_dev+0x10/0x10 [ 7.111185][ T1] bus_add_driver+0x2e9/0x690 [ 7.111185][ T1] driver_register+0x15c/0x4b0 [ 7.111185][ T1] __acpi_bus_register_driver+0xdf/0x130 [ 7.111185][ T1] ? __pfx_acpi_button_driver_init+0x10/0x10 [ 7.111185][ T1] acpi_button_driver_init+0x82/0x110 [ 7.111185][ T1] do_one_initcall+0x128/0x700 [ 7.111185][ T1] ? __pfx_do_one_initcall+0x10/0x10 [ 7.111185][ T1] ? __kmalloc_noprof+0x22b/0x4d0 [ 7.111185][ T1] ? __asan_register_globals+0x1c/0x80 [ 7.111185][ T1] kernel_init_freeable+0x5c7/0x900 [ 7.111185][ T1] ? __pfx_kernel_init+0x10/0x10 [ 7.111185][ T1] kernel_init+0x1c/0x2b0 [ 7.111185][ T1] ? __pfx_kernel_init+0x10/0x10 [ 7.111185][ T1] ret_from_fork+0x45/0x80 [ 7.111185][ T1] ? __pfx_kernel_init+0x10/0x10 [ 7.111185][ T1] ret_from_fork_asm+0x1a/0x30 [ 7.111185][ T1] [ 311.073116][ T11] kworker/u8:0 (11) used greatest stack depth: 25856 b= ytes left syzkaller build log: go env (err=3D) GO111MODULE=3D'auto' GOARCH=3D'amd64' GOBIN=3D'' GOCACHE=3D'/syzkaller/.cache/go-build' GOENV=3D'/syzkaller/.config/go/env' GOEXE=3D'' GOEXPERIMENT=3D'' GOFLAGS=3D'' GOHOSTARCH=3D'amd64' GOHOSTOS=3D'linux' GOINSECURE=3D'' GOMODCACHE=3D'/syzkaller/jobs-2/linux/gopath/pkg/mod' GONOPROXY=3D'' GONOSUMDB=3D'' GOOS=3D'linux' GOPATH=3D'/syzkaller/jobs-2/linux/gopath' GOPRIVATE=3D'' GOPROXY=3D'https://proxy.golang.org,direct' GOROOT=3D'/syzkaller/jobs-2/linux/gopath/pkg/mod/golang.org/toolchain@v0.0.= 1-go1.23.6.linux-amd64' GOSUMDB=3D'sum.golang.org' GOTMPDIR=3D'' GOTOOLCHAIN=3D'auto' GOTOOLDIR=3D'/syzkaller/jobs-2/linux/gopath/pkg/mod/golang.org/toolchain@v0= .0.1-go1.23.6.linux-amd64/pkg/tool/linux_amd64' GOVCS=3D'' GOVERSION=3D'go1.23.6' GODEBUG=3D'' GOTELEMETRY=3D'local' GOTELEMETRYDIR=3D'/syzkaller/.config/go/telemetry' GCCGO=3D'gccgo' GOAMD64=3D'v1' AR=3D'ar' CC=3D'gcc' CXX=3D'g++' CGO_ENABLED=3D'1' GOMOD=3D'/syzkaller/jobs-2/linux/gopath/src/github.com/google/syzkaller/go.= mod' GOWORK=3D'' CGO_CFLAGS=3D'-O2 -g' CGO_CPPFLAGS=3D'' CGO_CXXFLAGS=3D'-O2 -g' CGO_FFLAGS=3D'-O2 -g' CGO_LDFLAGS=3D'-O2 -g' PKG_CONFIG=3D'pkg-config' GOGCCFLAGS=3D'-fPIC -m64 -pthread -Wl,--no-gc-sections -fmessage-length=3D0= -ffile-prefix-map=3D/tmp/go-build3073680802=3D/tmp/go-build -gno-record-gc= c-switches' git status (err=3D) HEAD detached at b257a9b754 nothing to commit, working tree clean tput: No value for $TERM and no -T specified tput: No value for $TERM and no -T specified Makefile:31: run command via tools/syz-env for best compatibility, see: Makefile:32: https://github.com/google/syzkaller/blob/master/docs/contribut= ing.md#using-syz-env go list -f '{{.Stale}}' ./sys/syz-sysgen | grep -q false || go install ./sy= s/syz-sysgen make .descriptions tput: No value for $TERM and no -T specified tput: No value for $TERM and no -T specified Makefile:31: run command via tools/syz-env for best compatibility, see: Makefile:32: https://github.com/google/syzkaller/blob/master/docs/contribut= ing.md#using-syz-env bin/syz-sysgen touch .descriptions GOOS=3Dlinux GOARCH=3Damd64 go build "-ldflags=3D-s -w -X github.com/google= /syzkaller/prog.GitRevision=3Db257a9b7546c59d44cd69160b5a65a1bf1f050eb -X '= github.com/google/syzkaller/prog.gitRevisionDate=3D20250219-145244'" -o ./b= in/linux_amd64/syz-execprog github.com/google/syzkaller/tools/syz-execprog mkdir -p ./bin/linux_amd64 g++ -o ./bin/linux_amd64/syz-executor executor/executor.cc \ -m64 -O2 -pthread -Wall -Werror -Wparentheses -Wunused-const-variable -Wfr= ame-larger-than=3D16384 -Wno-stringop-overflow -Wno-array-bounds -Wno-forma= t-overflow -Wno-unused-but-set-variable -Wno-unused-command-line-argument -= static-pie -std=3Dc++17 -I. -Iexecutor/_include -DGOOS_linux=3D1 -DGOARCH= _amd64=3D1 \ -DHOSTGOOS_linux=3D1 -DGIT_REVISION=3D\"b257a9b7546c59d44cd69160b5a65a1bf1= f050eb\" /usr/bin/ld: /tmp/ccycsKnp.o: in function `Connection::Connect(char const*,= char const*)': executor.cc:(.text._ZN10Connection7ConnectEPKcS1_[_ZN10Connection7ConnectEP= KcS1_]+0x104): warning: Using 'gethostbyname' in statically linked applicat= ions requires at runtime the shared libraries from the glibc version used f= or linking Error text is too large and was truncated, full error text is at: https://syzkaller.appspot.com/x/error.txt?x=3D176ba7a4580000 Tested on: commit: c749f058 USB: core: Add eUSB2 descriptor and parsing i.. git tree: https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.= git usb-testing kernel config: https://syzkaller.appspot.com/x/.config?x=3Df429368eda610a8= 9 dashboard link: https://syzkaller.appspot.com/bug?extid=3D0154da2d403396b2b= d59 compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Deb= ian) 2.40 patch: https://syzkaller.appspot.com/x/patch.diff?x=3D15535fdf9800= 00