Re: [syzbot] [input?] [usb?] WARNING in cm109_input_ev/usb_submit_urb (2)

[syzbot <syzbot+25031f01508bf55c62ca@syzkaller.appspotmail.com>]

Hello,

syzbot tried to test the proposed patch but the build/boot failed:

 PCI/PCI transfers
[    5.444186][    T1] PCI: CLS 0 bytes, default 64
[    5.444816][    T1] PCI-DMA: Using software bounce buffering for IO (SWIOTLB)
[    5.444832][    T1] software IO TLB: mapped [mem 0x00000000b4600000-0x00000000b8600000] (64MB)
[    5.456557][    T1] ACPI: bus type thunderbolt registered
[    5.469792][    T1] RAPL PMU: API unit is 2^-32 Joules, 0 fixed counters, 10737418240 ms ovfl timer
[    5.493158][   T69] kworker/u8:4 (69) used greatest stack depth: 28264 bytes left
[    5.495766][   T70] kworker/u8:1 (70) used greatest stack depth: 27600 bytes left
[    5.529581][    T1] kvm_amd: CPU 1 isn't AMD or Hygon
[    5.529617][    T1] clocksource: tsc: mask: 0xffffffffffffffff max_cycles: 0x1fb63109b96, max_idle_ns: 440795265316 ns
[    5.530308][    T1] clocksource: Switched to clocksource tsc
[    5.548832][   T73] kworker/u8:2 (73) used greatest stack depth: 27048 bytes left
[    5.627675][    T1] Initialise system trusted keyrings
[    5.631386][    T1] workingset: timestamp_bits=40 (anon: 35) max_order=21 bucket_order=0 (anon: 0)
[    5.652577][    T1] DLM installed
[    5.663401][    T1] squashfs: version 4.0 (2009/01/31) Phillip Lougher
[    5.683324][    T1] NFS: Registering the id_resolver key type
[    5.683512][    T1] Key type id_resolver registered
[    5.683527][    T1] Key type id_legacy registered
[    5.683912][    T1] nfs4filelayout_init: NFSv4 File Layout Driver Registering...
[    5.684146][    T1] nfs4flexfilelayout_init: NFSv4 Flexfile Layout Driver Registering...
[    5.705015][    T1] smbdirect: subsystem loading...
[    5.722695][    T1] smbdirect: subsystem loaded
[    5.755508][    T1] Key type cifs.spnego registered
[    5.755795][    T1] Key type cifs.idmap registered
[    5.762170][    T1] ntfs3: Enabled Linux POSIX ACLs support
[    5.762181][    T1] ntfs3: Read-only LZX/Xpress compression included
[    5.762554][    T1] jffs2: version 2.2. (NAND) (SUMMARY)  © 2001-2006 Red Hat, Inc.
[    5.785507][    T1] romfs: ROMFS MTD (C) 2007 Red Hat, Inc.
[    5.785733][    T1] QNX4 filesystem 0.2.3 registered.
[    5.785852][    T1] qnx6: QNX6 filesystem 1.0.0 registered.
[    5.787232][    T1] fuse: init (API version 7.45)
[    5.794544][    T1] orangefs_debugfs_init: called with debug mask: :none: :0:
[    5.808206][    T1] orangefs_init: module version upstream loaded
[    5.809264][    T1] JFS: nTxBlock = 8192, nTxLock = 65536
[    5.832413][    T1] SGI XFS with ACLs, security attributes, realtime, scrub, repair, quota, no debug enabled
[    5.849633][    T1] 9p: Installing v9fs 9p2000 file system support
[    5.851906][    T1] NILFS version 2 loaded
[    5.851917][    T1] befs: version: 0.9.3
[    5.854601][    T1] ocfs2: Registered cluster interface o2cb
[    5.861599][    T1] ocfs2: Registered cluster interface user
[    5.868104][    T1] OCFS2 User DLM kernel interface loaded
[    5.924667][    T1] gfs2: GFS2 installed
[    5.950604][    T1] ceph: loaded (mds proto 32)
[    5.970916][    T1] NET: Registered PF_ALG protocol family
[    5.971417][    T1] async_tx: api initialized (async)
[    5.971488][    T1] Key type asymmetric registered
[    5.971574][    T1] Asymmetric key parser 'x509' registered
[    5.971592][    T1] Asymmetric key parser 'pkcs8' registered
[    5.971608][    T1] Key type pkcs7_test registered
[    5.973411][    T1] Block layer SCSI generic (bsg) driver version 0.4 loaded (major 239)
[    5.980507][    T1] io scheduler mq-deadline registered
[    5.980585][    T1] io scheduler kyber registered
[    5.982508][    T1] io scheduler bfq registered
[    6.001365][    T1] raid6: skipped pq benchmark and selected avx2x4
[    6.039935][    T1] input: Power Button as /devices/platform/LNXPWRBN:00/input/input0
[    6.045459][    T1] ACPI: button: Power Button [PWRF]
[    6.058697][    T1] input: Sleep Button as /devices/platform/LNXSLPBN:00/input/input1
[    6.063260][    T1] ACPI: button: Sleep Button [SLPF]
[    6.106537][    T1] ioatdma: Intel(R) QuickData Technology Driver 5.00
[    6.163872][   T10] ACPI: \_SB_.LNKC: Enabled at IRQ 11
[    6.164135][   T10] virtio-pci 0000:00:03.0: virtio_pci: leaving for legacy driver
[    6.214960][   T10] ACPI: \_SB_.LNKD: Enabled at IRQ 10
[    6.218325][   T10] virtio-pci 0000:00:04.0: virtio_pci: leaving for legacy driver
[    6.264078][   T10] ACPI: \_SB_.LNKB: Enabled at IRQ 10
[    6.264234][   T10] virtio-pci 0000:00:06.0: virtio_pci: leaving for legacy driver
[    6.301576][   T10] virtio-pci 0000:00:07.0: virtio_pci: leaving for legacy driver
[    6.337562][  T211] kworker/u8:6 (211) used greatest stack depth: 26120 bytes left
[    7.432947][    T1] N_HDLC line discipline registered with maxframe=4096
[    7.439409][    T1] Serial: 8250/16550 driver, 4 ports, IRQ sharing enabled
[    7.458549][    T1] 00:02: ttyS0 I/O:0x3f8 (irq = 4, base_baud = 115200) is a 16550A
[    7.491690][    T1] 00:03: ttyS1 I/O:0x2f8 (irq = 3, base_baud = 115200) is a 16550A
[    7.519868][    T1] 00:04: ttyS2 I/O:0x3e8 (irq = 6, base_baud = 115200) is a 16550A
[    7.546408][    T1] 00:05: ttyS3 I/O:0x2e8 (irq = 7, base_baud = 115200) is a 16550A
[    7.596237][    T1] Non-volatile memory driver v1.3
[    7.652884][    T1] usbcore: registered new interface driver xillyusb
[    7.670115][    T1] ACPI: bus type drm_connector registered
[    7.685171][    T1] [drm] Initialized vgem 1.0.0 for vgem on minor 0
[    7.694858][    T1] ------------[ cut here ]------------
[    7.694873][    T1] [PLANE:35:plane-0] pixel format with alpha exposed but blend mode not setup
[    7.694896][    T1] WARNING: drivers/gpu/drm/drm_mode_config.c:873 at drm_mode_config_validate+0x1c6d/0x1e60, CPU#1: swapper/0/1
[    7.694965][    T1] Modules linked in:
[    7.695014][    T1] CPU: 1 UID: 0 PID: 1 Comm: swapper/0 Not tainted syzkaller #0 PREEMPT_{RT,(full)} 
[    7.695118][    T1] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/16/2026
[    7.695141][    T1] RIP: 0010:drm_mode_config_validate+0x1cae/0x1e60
[    7.695170][    T1] Code: 0f 85 ae 00 00 00 4d 8d 77 10 8b 6d 00 4c 89 f0 48 c1 e8 03 80 3c 18 00 74 08 4c 89 f7 e8 fa 9f ac fc 49 8b 16 4c 89 ef 89 ee <67> 48 0f b9 3a eb 05 e8 06 d0 3f fc 49 bd 00 00 00 00 00 fc ff df
[    7.695192][    T1] RSP: 0000:ffffc90000067810 EFLAGS: 00010246
[    7.695211][    T1] RAX: 1ffff11004be7c08 RBX: dffffc0000000000 RCX: ffff88801c6f5dc0
[    7.695228][    T1] RDX: ffff888026454c40 RSI: 0000000000000023 RDI: ffffffff8fdc7790
[    7.695244][    T1] RBP: 0000000000000023 R08: 0000000000000000 R09: 0000000000000000
[    7.695258][    T1] R10: dffffc0000000000 R11: fffffbfff1fa25f0 R12: dffffc0000000000
[    7.695275][    T1] R13: ffffffff8fdc7790 R14: ffff888025f3e040 R15: ffff888025f3e030
[    7.695291][    T1] FS:  0000000000000000(0000) GS:ffff888125add000(0000) knlGS:0000000000000000
[    7.695309][    T1] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[    7.695324][    T1] CR2: 0000000000000000 CR3: 000000000e1b0000 CR4: 00000000003526f0
[    7.695343][    T1] Call Trace:
[    7.695352][    T1]  <TASK>
[    7.695376][    T1]  ? debugfs_create_file_full+0x3f/0x60
[    7.695418][    T1]  drm_dev_register+0x7f/0xd80
[    7.695448][    T1]  vkms_create+0x40d/0x4f0
[    7.695480][    T1]  ? __pfx_vkms_init+0x10/0x10
[    7.695518][    T1]  vkms_init+0x57/0x80
[    7.695551][    T1]  do_one_initcall+0x250/0x870
[    7.695579][    T1]  ? __pfx_vkms_init+0x10/0x10
[    7.695611][    T1]  ? __pfx_do_one_initcall+0x10/0x10
[    7.695647][    T1]  ? __pfx___schedule+0x10/0x10
[    7.695687][    T1]  ? irqentry_exit+0x218/0x8f0
[    7.695718][    T1]  ? lockdep_hardirqs_on+0x7a/0x110
[    7.695741][    T1]  ? irqentry_exit+0x218/0x8f0
[    7.695764][    T1]  ? trace_irq_disable+0x3b/0x140
[    7.695805][    T1]  ? strlen+0x5c/0x70
[    7.695830][    T1]  ? next_arg+0x4a0/0x5e0
[    7.695857][    T1]  ? parameq+0x14d/0x170
[    7.695894][    T1]  ? parse_args+0x9c3/0xad0
[    7.695943][    T1]  ? trace_kmalloc+0x2a/0xf0
[    7.695978][    T1]  ? rcu_is_watching+0x15/0xb0
[    7.696008][    T1]  do_initcall_level+0x10a/0x1a0
[    7.696035][    T1]  ? kernel_init+0x22/0x1d0
[    7.696063][    T1]  do_initcalls+0x59/0xa0
[    7.696090][    T1]  kernel_init_freeable+0x29d/0x3e0
[    7.696115][    T1]  ? __pfx_kernel_init+0x10/0x10
[    7.696147][    T1]  kernel_init+0x22/0x1d0
[    7.696174][    T1]  ? __pfx_kernel_init+0x10/0x10
[    7.696202][    T1]  ret_from_fork+0x514/0xb70
[    7.696235][    T1]  ? __pfx_ret_from_fork+0x10/0x10
[    7.696264][    T1]  ? __switch_to+0xc89/0x1420
[    7.696293][    T1]  ? __pfx_kernel_init+0x10/0x10
[    7.696325][    T1]  ret_from_fork_asm+0x1a/0x30
[    7.696372][    T1]  </TASK>
[    7.696388][    T1] Kernel panic - not syncing: kernel: panic_on_warn set ...
[    7.696404][    T1] CPU: 1 UID: 0 PID: 1 Comm: swapper/0 Not tainted syzkaller #0 PREEMPT_{RT,(full)} 
[    7.696428][    T1] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/16/2026
[    7.696440][    T1] Call Trace:
[    7.696448][    T1]  <TASK>
[    7.696457][    T1]  vpanic+0x56c/0xa60
[    7.696480][    T1]  ? __pfx__printk+0x10/0x10
[    7.696506][    T1]  ? __pfx_vpanic+0x10/0x10
[    7.696529][    T1]  ? is_bpf_text_address+0x292/0x2b0
[    7.696554][    T1]  ? is_bpf_text_address+0x26/0x2b0
[    7.696588][    T1]  panic+0xc5/0xd0
[    7.696610][    T1]  ? __pfx_panic+0x10/0x10
[    7.696640][    T1]  ? ret_from_fork_asm+0x1a/0x30
[    7.696675][    T1]  __warn+0x315/0x4c0
[    7.696695][    T1]  ? drm_mode_config_validate+0x1c6d/0x1e60
[    7.696732][    T1]  ? drm_mode_config_validate+0x1c6d/0x1e60
[    7.696758][    T1]  __report_bug+0x276/0x570
[    7.696785][    T1]  ? drm_mode_config_validate+0x1c6d/0x1e60
[    7.696814][    T1]  ? __pfx___report_bug+0x10/0x10
[    7.696845][    T1]  ? _raw_spin_unlock_irqrestore+0x30/0x80
[    7.696871][    T1]  ? lockdep_hardirqs_on+0x7a/0x110
[    7.696896][    T1]  ? rt_mutex_slowunlock+0x4ee/0xa20
[    7.696930][    T1]  report_bug_entry+0x19a/0x290
[    7.696956][    T1]  ? drm_mode_config_validate+0x1cae/0x1e60
[    7.696980][    T1]  ? drm_mode_config_validate+0x1cb3/0x1e60
[    7.697005][    T1]  handle_bug+0xce/0x200
[    7.697153][    T1]  exc_invalid_op+0x1a/0x50
[    7.697186][    T1]  asm_exc_invalid_op+0x1a/0x20
[    7.697209][    T1] RIP: 0010:drm_mode_config_validate+0x1cae/0x1e60
[    7.697237][    T1] Code: 0f 85 ae 00 00 00 4d 8d 77 10 8b 6d 00 4c 89 f0 48 c1 e8 03 80 3c 18 00 74 08 4c 89 f7 e8 fa 9f ac fc 49 8b 16 4c 89 ef 89 ee <67> 48 0f b9 3a eb 05 e8 06 d0 3f fc 49 bd 00 00 00 00 00 fc ff df
[    7.697256][    T1] RSP: 0000:ffffc90000067810 EFLAGS: 00010246
[    7.697275][    T1] RAX: 1ffff11004be7c08 RBX: dffffc0000000000 RCX: ffff88801c6f5dc0
[    7.697292][    T1] RDX: ffff888026454c40 RSI: 0000000000000023 RDI: ffffffff8fdc7790
[    7.697307][    T1] RBP: 0000000000000023 R08: 0000000000000000 R09: 0000000000000000
[    7.697320][    T1] R10: dffffc0000000000 R11: fffffbfff1fa25f0 R12: dffffc0000000000
[    7.697336][    T1] R13: ffffffff8fdc7790 R14: ffff888025f3e040 R15: ffff888025f3e030
[    7.697378][    T1]  ? debugfs_create_file_full+0x3f/0x60
[    7.697418][    T1]  drm_dev_register+0x7f/0xd80
[    7.697447][    T1]  vkms_create+0x40d/0x4f0
[    7.697478][    T1]  ? __pfx_vkms_init+0x10/0x10
[    7.697509][    T1]  vkms_init+0x57/0x80
[    7.697542][    T1]  do_one_initcall+0x250/0x870
[    7.697570][    T1]  ? __pfx_vkms_init+0x10/0x10
[    7.697614][    T1]  ? __pfx_do_one_initcall+0x10/0x10
[    7.697650][    T1]  ? __pfx___schedule+0x10/0x10
[    7.697687][    T1]  ? irqentry_exit+0x218/0x8f0
[    7.697710][    T1]  ? lockdep_hardirqs_on+0x7a/0x110
[    7.697735][    T1]  ? irqentry_exit+0x218/0x8f0
[    7.697757][    T1]  ? trace_irq_disable+0x3b/0x140
[    7.697799][    T1]  ? strlen+0x5c/0x70
[    7.697824][    T1]  ? next_arg+0x4a0/0x5e0
[    7.697852][    T1]  ? parameq+0x14d/0x170
[    7.697888][    T1]  ? parse_args+0x9c3/0xad0
[    7.697937][    T1]  ? trace_kmalloc+0x2a/0xf0
[    7.697972][    T1]  ? rcu_is_watching+0x15/0xb0
[    7.698003][    T1]  do_initcall_level+0x10a/0x1a0
[    7.698032][    T1]  ? kernel_init+0x22/0x1d0
[    7.698063][    T1]  do_initcalls+0x59/0xa0
[    7.698089][    T1]  kernel_init_freeable+0x29d/0x3e0
[    7.698115][    T1]  ? __pfx_kernel_init+0x10/0x10
[    7.698146][    T1]  kernel_init+0x22/0x1d0
[    7.698174][    T1]  ? __pfx_kernel_init+0x10/0x10
[    7.698203][    T1]  ret_from_fork+0x514/0xb70
[    7.698237][    T1]  ? __pfx_ret_from_fork+0x10/0x10
[    7.698268][    T1]  ? __switch_to+0xc89/0x1420
[    7.698304][    T1]  ? __pfx_kernel_init+0x10/0x10
[    7.698337][    T1]  ret_from_fork_asm+0x1a/0x30
[    7.698384][    T1]  </TASK>
[    7.699007][    T1] Kernel Offset: disabled


syzkaller build log:
go env (err=<nil>)
AR='ar'
CC='gcc'
CGO_CFLAGS='-O2 -g'
CGO_CPPFLAGS=''
CGO_CXXFLAGS='-O2 -g'
CGO_ENABLED='1'
CGO_FFLAGS='-O2 -g'
CGO_LDFLAGS='-O2 -g'
CXX='g++'
GCCGO='gccgo'
GO111MODULE='auto'
GOAMD64='v1'
GOARCH='amd64'
GOAUTH='netrc'
GOBIN=''
GOCACHE='/syzkaller/.cache/go-build'
GOCACHEPROG=''
GODEBUG=''
GOENV='/syzkaller/.config/go/env'
GOEXE=''
GOEXPERIMENT=''
GOFIPS140='off'
GOFLAGS=''
GOGCCFLAGS='-fPIC -m64 -pthread -Wl,--no-gc-sections -fmessage-length=0 -ffile-prefix-map=/tmp/go-build18079588=/tmp/go-build -gno-record-gcc-switches'
GOHOSTARCH='amd64'
GOHOSTOS='linux'
GOINSECURE=''
GOMOD='/syzkaller/jobs-2/linux/gopath/src/github.com/google/syzkaller/go.mod'
GOMODCACHE='/syzkaller/jobs-2/linux/gopath/pkg/mod'
GONOPROXY=''
GONOSUMDB=''
GOOS='linux'
GOPATH='/syzkaller/jobs-2/linux/gopath'
GOPRIVATE=''
GOPROXY='https://proxy.golang.org,direct'
GOROOT='/usr/local/go'
GOSUMDB='sum.golang.org'
GOTELEMETRY='local'
GOTELEMETRYDIR='/syzkaller/.config/go/telemetry'
GOTMPDIR=''
GOTOOLCHAIN='auto'
GOTOOLDIR='/usr/local/go/pkg/tool/linux_amd64'
GOVCS=''
GOVERSION='go1.26.0'
GOWORK=''
PKG_CONFIG='pkg-config'

git status (err=<nil>)
HEAD detached at 7c5de9c304
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/contributing.md#using-syz-env
go list -f '{{.Stale}}' -ldflags="-s -w -X github.com/google/syzkaller/prog.GitRevision=7c5de9c304dd32fc045989c69d2821397d56d718 -X github.com/google/syzkaller/prog.gitRevisionDate=20260721-090218"  ./sys/syz-sysgen | grep -q false || go install -ldflags="-s -w -X github.com/google/syzkaller/prog.GitRevision=7c5de9c304dd32fc045989c69d2821397d56d718 -X github.com/google/syzkaller/prog.gitRevisionDate=20260721-090218"  ./sys/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/contributing.md#using-syz-env
bin/syz-sysgen
touch .descriptions
GOOS=linux GOARCH=amd64 go build -ldflags="-s -w -X github.com/google/syzkaller/prog.GitRevision=7c5de9c304dd32fc045989c69d2821397d56d718 -X github.com/google/syzkaller/prog.gitRevisionDate=20260721-090218"  -o ./bin/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 -Wframe-larger-than=16384 -Wno-stringop-overflow -Wno-array-bounds -Wno-format-overflow -Wno-unused-but-set-variable -Wno-unused-command-line-argument -static-pie -std=c++17 -I. -Iexecutor/_include   -DGOOS_linux=1 -DGOARCH_amd64=1 \
	-DHOSTGOOS_linux=1 -DGIT_REVISION=\"7c5de9c304dd32fc045989c69d2821397d56d718\"
/usr/bin/ld: /tmp/cc8B3TAg.o: in function `Connection::Connect(char const*, char const*)':
executor.cc:(.text._ZN10Connection7ConnectEPKcS1_[_ZN10Connection7ConnectEPKcS1_]+0x386): warning: Using 'gethostbyname' in statically linked applications requires at runtime the shared libraries from the glibc version used for linking
./tools/check-syzos.sh 2>/dev/null


Error text is too large and was truncated, full error text is at:
https://syzkaller.appspot.com/x/error.txt?x=13e7f2ea580000


Tested on:

commit:         0d33d21e Add linux-next specific files for 20260727
git tree:       linux-next
kernel config:  https://syzkaller.appspot.com/x/.config?x=830a7c02f0fee86b
dashboard link: https://syzkaller.appspot.com/bug?extid=25031f01508bf55c62ca
compiler:       Debian clang version 22.1.8 (++20260613092233+e80beda6e255-1~exp1~20260613092250.77), Debian LLD 22.1.8
patch:          https://syzkaller.appspot.com/x/patch.diff?x=140a67b1580000