Extracting prog: 1m59.556589516s
Minimizing prog: 11m35.289920296s
Simplifying prog options: 0s
Extracting C: 1m10.733553603s
Simplifying C: 16m17.730756849s


extracting reproducer from 1 programs
testing a last program of every proc
single: executing 1 programs separately with timeout 30s
testing program (duration=30s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat$uinput-ioctl$UI_DEV_SETUP-ioctl$UI_SET_FFBIT-ioctl$UI_DEV_CREATE-syz_open_dev$evdev-ioctl$EVIOCSFF
detailed listing:
executing program 0:
r0 = openat$uinput(0xffffffffffffff9c, &(0x7f0000000000), 0x2, 0x0)
ioctl$UI_DEV_SETUP(r0, 0x405c5503, &(0x7f0000000280)={{}, 'syz1\x00', 0x10})
ioctl$UI_SET_FFBIT(r0, 0x4004556b, 0x51)
ioctl$UI_DEV_CREATE(r0, 0x5501)
r1 = syz_open_dev$evdev(&(0x7f0000000340), 0x3f, 0x0)
ioctl$EVIOCSFF(r1, 0x40304580, &(0x7f0000000180)={0x50, 0xffff, 0x0, {0x7}, {}, @cond=[{0x0, 0x0, 0x0, 0x0, 0x0, 0x9}, {0x0, 0x0, 0x0, 0x4}]})

program crashed: possible deadlock in uinput_request_submit
program crashed: possible deadlock in uinput_request_submit
single: successfully extracted reproducer
found reproducer with 6 syscalls
minimizing guilty program
testing program (duration=45.567450966s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat$uinput-ioctl$UI_DEV_SETUP-ioctl$UI_SET_FFBIT-ioctl$UI_DEV_CREATE-syz_open_dev$evdev
detailed listing:
executing program 0:
r0 = openat$uinput(0xffffffffffffff9c, &(0x7f0000000000), 0x2, 0x0)
ioctl$UI_DEV_SETUP(r0, 0x405c5503, &(0x7f0000000280)={{}, 'syz1\x00', 0x10})
ioctl$UI_SET_FFBIT(r0, 0x4004556b, 0x51)
ioctl$UI_DEV_CREATE(r0, 0x5501)
syz_open_dev$evdev(&(0x7f0000000340), 0x3f, 0x0)

program did not crash
testing program (duration=45.567450966s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat$uinput-ioctl$UI_DEV_SETUP-ioctl$UI_SET_FFBIT-ioctl$UI_DEV_CREATE-ioctl$EVIOCSFF
detailed listing:
executing program 0:
r0 = openat$uinput(0xffffffffffffff9c, &(0x7f0000000000), 0x2, 0x0)
ioctl$UI_DEV_SETUP(r0, 0x405c5503, &(0x7f0000000280)={{}, 'syz1\x00', 0x10})
ioctl$UI_SET_FFBIT(r0, 0x4004556b, 0x51)
ioctl$UI_DEV_CREATE(r0, 0x5501)
ioctl$EVIOCSFF(0xffffffffffffffff, 0x40304580, &(0x7f0000000180)={0x50, 0xffff, 0x0, {0x7}, {}, @cond=[{0x0, 0x0, 0x0, 0x0, 0x0, 0x9}, {0x0, 0x0, 0x0, 0x4}]})

program did not crash
testing program (duration=45.567450966s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat$uinput-ioctl$UI_DEV_SETUP-ioctl$UI_SET_FFBIT-syz_open_dev$evdev-ioctl$EVIOCSFF
detailed listing:
executing program 0:
r0 = openat$uinput(0xffffffffffffff9c, &(0x7f0000000000), 0x2, 0x0)
ioctl$UI_DEV_SETUP(r0, 0x405c5503, &(0x7f0000000280)={{}, 'syz1\x00', 0x10})
ioctl$UI_SET_FFBIT(r0, 0x4004556b, 0x51)
r1 = syz_open_dev$evdev(&(0x7f0000000340), 0x3f, 0x0)
ioctl$EVIOCSFF(r1, 0x40304580, &(0x7f0000000180)={0x50, 0xffff, 0x0, {0x7}, {}, @cond=[{0x0, 0x0, 0x0, 0x0, 0x0, 0x9}, {0x0, 0x0, 0x0, 0x4}]})

program did not crash
testing program (duration=45.567450966s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat$uinput-ioctl$UI_DEV_SETUP-ioctl$UI_DEV_CREATE-syz_open_dev$evdev-ioctl$EVIOCSFF
detailed listing:
executing program 0:
r0 = openat$uinput(0xffffffffffffff9c, &(0x7f0000000000), 0x2, 0x0)
ioctl$UI_DEV_SETUP(r0, 0x405c5503, &(0x7f0000000280)={{}, 'syz1\x00', 0x10})
ioctl$UI_DEV_CREATE(r0, 0x5501)
r1 = syz_open_dev$evdev(&(0x7f0000000340), 0x3f, 0x0)
ioctl$EVIOCSFF(r1, 0x40304580, &(0x7f0000000180)={0x50, 0xffff, 0x0, {0x7}, {}, @cond=[{0x0, 0x0, 0x0, 0x0, 0x0, 0x9}, {0x0, 0x0, 0x0, 0x4}]})

program did not crash
testing program (duration=45.567450966s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat$uinput-ioctl$UI_SET_FFBIT-ioctl$UI_DEV_CREATE-syz_open_dev$evdev-ioctl$EVIOCSFF
detailed listing:
executing program 0:
r0 = openat$uinput(0xffffffffffffff9c, &(0x7f0000000000), 0x2, 0x0)
ioctl$UI_SET_FFBIT(r0, 0x4004556b, 0x51)
ioctl$UI_DEV_CREATE(r0, 0x5501)
r1 = syz_open_dev$evdev(&(0x7f0000000340), 0x3f, 0x0)
ioctl$EVIOCSFF(r1, 0x40304580, &(0x7f0000000180)={0x50, 0xffff, 0x0, {0x7}, {}, @cond=[{0x0, 0x0, 0x0, 0x0, 0x0, 0x9}, {0x0, 0x0, 0x0, 0x4}]})

program did not crash
testing program (duration=45.567450966s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): ioctl$UI_DEV_SETUP-ioctl$UI_SET_FFBIT-ioctl$UI_DEV_CREATE-syz_open_dev$evdev-ioctl$EVIOCSFF
detailed listing:
executing program 0:
ioctl$UI_DEV_SETUP(0xffffffffffffffff, 0x405c5503, &(0x7f0000000280)={{}, 'syz1\x00', 0x10})
ioctl$UI_SET_FFBIT(0xffffffffffffffff, 0x4004556b, 0x51)
ioctl$UI_DEV_CREATE(0xffffffffffffffff, 0x5501)
r0 = syz_open_dev$evdev(&(0x7f0000000340), 0x3f, 0x0)
ioctl$EVIOCSFF(r0, 0x40304580, &(0x7f0000000180)={0x50, 0xffff, 0x0, {0x7}, {}, @cond=[{0x0, 0x0, 0x0, 0x0, 0x0, 0x9}, {0x0, 0x0, 0x0, 0x4}]})

program did not crash
testing program (duration=45.567450966s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat$uinput-ioctl$UI_DEV_SETUP-ioctl$UI_SET_FFBIT-ioctl$UI_DEV_CREATE-syz_open_dev$evdev-ioctl$EVIOCSFF
detailed listing:
executing program 0:
r0 = openat$uinput(0xffffffffffffff9c, 0x0, 0x2, 0x0)
ioctl$UI_DEV_SETUP(r0, 0x405c5503, &(0x7f0000000280)={{}, 'syz1\x00', 0x10})
ioctl$UI_SET_FFBIT(r0, 0x4004556b, 0x51)
ioctl$UI_DEV_CREATE(r0, 0x5501)
r1 = syz_open_dev$evdev(&(0x7f0000000340), 0x3f, 0x0)
ioctl$EVIOCSFF(r1, 0x40304580, &(0x7f0000000180)={0x50, 0xffff, 0x0, {0x7}, {}, @cond=[{0x0, 0x0, 0x0, 0x0, 0x0, 0x9}, {0x0, 0x0, 0x0, 0x4}]})

program did not crash
testing program (duration=45.567450966s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat$uinput-ioctl$UI_DEV_SETUP-ioctl$UI_SET_FFBIT-ioctl$UI_DEV_CREATE-syz_open_dev$evdev-ioctl$EVIOCSFF
detailed listing:
executing program 0:
r0 = openat$uinput(0xffffffffffffff9c, &(0x7f0000000000), 0x2, 0x0)
ioctl$UI_DEV_SETUP(r0, 0x405c5503, 0x0)
ioctl$UI_SET_FFBIT(r0, 0x4004556b, 0x51)
ioctl$UI_DEV_CREATE(r0, 0x5501)
r1 = syz_open_dev$evdev(&(0x7f0000000340), 0x3f, 0x0)
ioctl$EVIOCSFF(r1, 0x40304580, &(0x7f0000000180)={0x50, 0xffff, 0x0, {0x7}, {}, @cond=[{0x0, 0x0, 0x0, 0x0, 0x0, 0x9}, {0x0, 0x0, 0x0, 0x4}]})

program did not crash
testing program (duration=45.567450966s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat$uinput-ioctl$UI_DEV_SETUP-ioctl$UI_SET_FFBIT-ioctl$UI_DEV_CREATE-syz_open_dev$evdev-ioctl$EVIOCSFF
detailed listing:
executing program 0:
r0 = openat$uinput(0xffffffffffffff9c, &(0x7f0000000000), 0x2, 0x0)
ioctl$UI_DEV_SETUP(r0, 0x405c5503, &(0x7f0000000280)={{}, 'syz1\x00', 0x10})
ioctl$UI_SET_FFBIT(r0, 0x4004556b, 0x51)
ioctl$UI_DEV_CREATE(r0, 0x5501)
r1 = syz_open_dev$evdev(0x0, 0x3f, 0x0)
ioctl$EVIOCSFF(r1, 0x40304580, &(0x7f0000000180)={0x50, 0xffff, 0x0, {0x7}, {}, @cond=[{0x0, 0x0, 0x0, 0x0, 0x0, 0x9}, {0x0, 0x0, 0x0, 0x4}]})

program did not crash
testing program (duration=45.567450966s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat$uinput-ioctl$UI_DEV_SETUP-ioctl$UI_SET_FFBIT-ioctl$UI_DEV_CREATE-syz_open_dev$evdev-ioctl$EVIOCSFF
detailed listing:
executing program 0:
r0 = openat$uinput(0xffffffffffffff9c, &(0x7f0000000000), 0x2, 0x0)
ioctl$UI_DEV_SETUP(r0, 0x405c5503, &(0x7f0000000280)={{}, 'syz1\x00', 0x10})
ioctl$UI_SET_FFBIT(r0, 0x4004556b, 0x51)
ioctl$UI_DEV_CREATE(r0, 0x5501)
r1 = syz_open_dev$evdev(&(0x7f0000000340), 0x3f, 0x0)
ioctl$EVIOCSFF(r1, 0x40304580, 0x0)

program did not crash
extracting C reproducer
testing compiled C program (duration=45.567450966s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat$uinput-ioctl$UI_DEV_SETUP-ioctl$UI_SET_FFBIT-ioctl$UI_DEV_CREATE-syz_open_dev$evdev-ioctl$EVIOCSFF
program crashed: possible deadlock in uinput_request_submit
simplifying C reproducer
testing compiled C program (duration=45.567450966s, {Threaded:false Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat$uinput-ioctl$UI_DEV_SETUP-ioctl$UI_SET_FFBIT-ioctl$UI_DEV_CREATE-syz_open_dev$evdev-ioctl$EVIOCSFF
program crashed: possible deadlock in uinput_request_submit
testing compiled C program (duration=45.567450966s, {Threaded:false Repeat:false RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:false Cgroups:false BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat$uinput-ioctl$UI_DEV_SETUP-ioctl$UI_SET_FFBIT-ioctl$UI_DEV_CREATE-syz_open_dev$evdev-ioctl$EVIOCSFF
program did not crash
testing compiled C program (duration=45.567450966s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat$uinput-ioctl$UI_DEV_SETUP-ioctl$UI_SET_FFBIT-ioctl$UI_DEV_CREATE-syz_open_dev$evdev-ioctl$EVIOCSFF
program did not crash
testing compiled C program (duration=45.567450966s, {Threaded:false Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:true Sysctl:true Swap:false UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat$uinput-ioctl$UI_DEV_SETUP-ioctl$UI_SET_FFBIT-ioctl$UI_DEV_CREATE-syz_open_dev$evdev-ioctl$EVIOCSFF
program crashed: possible deadlock in evdev_cleanup
a never seen crash title: possible deadlock in evdev_cleanup, ignore
testing compiled C program (duration=45.567450966s, {Threaded:false Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat$uinput-ioctl$UI_DEV_SETUP-ioctl$UI_SET_FFBIT-ioctl$UI_DEV_CREATE-syz_open_dev$evdev-ioctl$EVIOCSFF
program crashed: possible deadlock in uinput_request_submit
testing compiled C program (duration=45.567450966s, {Threaded:false Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat$uinput-ioctl$UI_DEV_SETUP-ioctl$UI_SET_FFBIT-ioctl$UI_DEV_CREATE-syz_open_dev$evdev-ioctl$EVIOCSFF
program crashed: possible deadlock in uinput_request_submit
testing compiled C program (duration=45.567450966s, {Threaded:false Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat$uinput-ioctl$UI_DEV_SETUP-ioctl$UI_SET_FFBIT-ioctl$UI_DEV_CREATE-syz_open_dev$evdev-ioctl$EVIOCSFF
program crashed: possible deadlock in uinput_request_submit
testing compiled C program (duration=45.567450966s, {Threaded:false Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat$uinput-ioctl$UI_DEV_SETUP-ioctl$UI_SET_FFBIT-ioctl$UI_DEV_CREATE-syz_open_dev$evdev-ioctl$EVIOCSFF
program crashed: possible deadlock in uinput_request_submit
testing compiled C program (duration=45.567450966s, {Threaded:false Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat$uinput-ioctl$UI_DEV_SETUP-ioctl$UI_SET_FFBIT-ioctl$UI_DEV_CREATE-syz_open_dev$evdev-ioctl$EVIOCSFF
program crashed: possible deadlock in uinput_request_submit
testing compiled C program (duration=45.567450966s, {Threaded:false Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat$uinput-ioctl$UI_DEV_SETUP-ioctl$UI_SET_FFBIT-ioctl$UI_DEV_CREATE-syz_open_dev$evdev-ioctl$EVIOCSFF
program crashed: possible deadlock in uinput_request_submit
testing compiled C program (duration=45.567450966s, {Threaded:false Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat$uinput-ioctl$UI_DEV_SETUP-ioctl$UI_SET_FFBIT-ioctl$UI_DEV_CREATE-syz_open_dev$evdev-ioctl$EVIOCSFF
program crashed: possible deadlock in uinput_request_submit
testing compiled C program (duration=45.567450966s, {Threaded:false Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat$uinput-ioctl$UI_DEV_SETUP-ioctl$UI_SET_FFBIT-ioctl$UI_DEV_CREATE-syz_open_dev$evdev-ioctl$EVIOCSFF
program crashed: possible deadlock in uinput_request_submit
testing compiled C program (duration=45.567450966s, {Threaded:false Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat$uinput-ioctl$UI_DEV_SETUP-ioctl$UI_SET_FFBIT-ioctl$UI_DEV_CREATE-syz_open_dev$evdev-ioctl$EVIOCSFF
program crashed: possible deadlock in uinput_request_submit
testing compiled C program (duration=45.567450966s, {Threaded:false Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:false HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat$uinput-ioctl$UI_DEV_SETUP-ioctl$UI_SET_FFBIT-ioctl$UI_DEV_CREATE-syz_open_dev$evdev-ioctl$EVIOCSFF
program did not crash
testing compiled C program (duration=45.567450966s, {Threaded:false Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat$uinput-ioctl$UI_DEV_SETUP-ioctl$UI_SET_FFBIT-ioctl$UI_DEV_CREATE-syz_open_dev$evdev-ioctl$EVIOCSFF
program crashed: possible deadlock in uinput_request_submit
testing compiled C program (duration=45.567450966s, {Threaded:false Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:false Swap:true UseTmpDir:true HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat$uinput-ioctl$UI_DEV_SETUP-ioctl$UI_SET_FFBIT-ioctl$UI_DEV_CREATE-syz_open_dev$evdev-ioctl$EVIOCSFF
program crashed: possible deadlock in uinput_request_submit
testing compiled C program (duration=45.567450966s, {Threaded:false Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:false Swap:false UseTmpDir:true HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat$uinput-ioctl$UI_DEV_SETUP-ioctl$UI_SET_FFBIT-ioctl$UI_DEV_CREATE-syz_open_dev$evdev-ioctl$EVIOCSFF
program crashed: possible deadlock in uinput_request_submit
testing program (duration=45.567450966s, {Threaded:false Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:false Swap:false UseTmpDir:true HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat$uinput-ioctl$UI_DEV_SETUP-ioctl$UI_SET_FFBIT-ioctl$UI_DEV_CREATE-syz_open_dev$evdev-ioctl$EVIOCSFF
detailed listing:
executing program 0:
r0 = openat$uinput(0xffffffffffffff9c, &(0x7f0000000000), 0x2, 0x0)
ioctl$UI_DEV_SETUP(r0, 0x405c5503, &(0x7f0000000280)={{}, 'syz1\x00', 0x10})
ioctl$UI_SET_FFBIT(r0, 0x4004556b, 0x51)
ioctl$UI_DEV_CREATE(r0, 0x5501)
r1 = syz_open_dev$evdev(&(0x7f0000000340), 0x3f, 0x0)
ioctl$EVIOCSFF(r1, 0x40304580, &(0x7f0000000180)={0x50, 0xffff, 0x0, {0x7}, {}, @cond=[{0x0, 0x0, 0x0, 0x0, 0x0, 0x9}, {0x0, 0x0, 0x0, 0x4}]})

program crashed: possible deadlock in uinput_request_submit
validation run: crashed=true
testing program (duration=45.567450966s, {Threaded:false Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:false Swap:false UseTmpDir:true HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat$uinput-ioctl$UI_DEV_SETUP-ioctl$UI_SET_FFBIT-ioctl$UI_DEV_CREATE-syz_open_dev$evdev-ioctl$EVIOCSFF
detailed listing:
executing program 0:
r0 = openat$uinput(0xffffffffffffff9c, &(0x7f0000000000), 0x2, 0x0)
ioctl$UI_DEV_SETUP(r0, 0x405c5503, &(0x7f0000000280)={{}, 'syz1\x00', 0x10})
ioctl$UI_SET_FFBIT(r0, 0x4004556b, 0x51)
ioctl$UI_DEV_CREATE(r0, 0x5501)
r1 = syz_open_dev$evdev(&(0x7f0000000340), 0x3f, 0x0)
ioctl$EVIOCSFF(r1, 0x40304580, &(0x7f0000000180)={0x50, 0xffff, 0x0, {0x7}, {}, @cond=[{0x0, 0x0, 0x0, 0x0, 0x0, 0x9}, {0x0, 0x0, 0x0, 0x4}]})

program crashed: possible deadlock in uinput_request_submit
validation run: crashed=true
testing program (duration=45.567450966s, {Threaded:false Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:false Swap:false UseTmpDir:true HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat$uinput-ioctl$UI_DEV_SETUP-ioctl$UI_SET_FFBIT-ioctl$UI_DEV_CREATE-syz_open_dev$evdev-ioctl$EVIOCSFF
detailed listing:
executing program 0:
r0 = openat$uinput(0xffffffffffffff9c, &(0x7f0000000000), 0x2, 0x0)
ioctl$UI_DEV_SETUP(r0, 0x405c5503, &(0x7f0000000280)={{}, 'syz1\x00', 0x10})
ioctl$UI_SET_FFBIT(r0, 0x4004556b, 0x51)
ioctl$UI_DEV_CREATE(r0, 0x5501)
r1 = syz_open_dev$evdev(&(0x7f0000000340), 0x3f, 0x0)
ioctl$EVIOCSFF(r1, 0x40304580, &(0x7f0000000180)={0x50, 0xffff, 0x0, {0x7}, {}, @cond=[{0x0, 0x0, 0x0, 0x0, 0x0, 0x9}, {0x0, 0x0, 0x0, 0x4}]})

program crashed: possible deadlock in uinput_request_submit
validation run: crashed=true
reproducing took 34m31.695857093s
repro crashed as (corrupted=false):
input: syz1 as /devices/virtual/input/input11
======================================================
WARNING: possible circular locking dependency detected
syzkaller #0 Not tainted
------------------------------------------------------
syz.1.28/6756 is trying to acquire lock:
ffff0000d36ea070 (&newdev->mutex){+.+.}-{4:4}, at: uinput_request_send drivers/input/misc/uinput.c:151 [inline]
ffff0000d36ea070 (&newdev->mutex){+.+.}-{4:4}, at: uinput_request_submit+0x168/0x600 drivers/input/misc/uinput.c:182

but task is already holding lock:
ffff0000d35458b0 (&ff->mutex){+.+.}-{4:4}, at: class_mutex_constructor include/linux/mutex.h:228 [inline]
ffff0000d35458b0 (&ff->mutex){+.+.}-{4:4}, at: input_ff_upload+0x2f8/0x8e0 drivers/input/ff-core.c:122

which lock already depends on the new lock.


the existing dependency chain (in reverse order) is:

-> #3 (&ff->mutex){+.+.}-{4:4}:
       __mutex_lock_common+0x1d0/0x2678 kernel/locking/mutex.c:598
       __mutex_lock kernel/locking/mutex.c:760 [inline]
       mutex_lock_nested+0x2c/0x38 kernel/locking/mutex.c:812
       class_mutex_constructor include/linux/mutex.h:228 [inline]
       input_ff_upload+0x2f8/0x8e0 drivers/input/ff-core.c:122
       evdev_do_ioctl drivers/input/evdev.c:1181 [inline]
       evdev_ioctl_handler+0x18bc/0x2214 drivers/input/evdev.c:1270
       evdev_ioctl+0x38/0x4c drivers/input/evdev.c:1279
       vfs_ioctl fs/ioctl.c:51 [inline]
       __do_sys_ioctl fs/ioctl.c:598 [inline]
       __se_sys_ioctl fs/ioctl.c:584 [inline]
       __arm64_sys_ioctl+0x14c/0x1c4 fs/ioctl.c:584
       __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline]
       invoke_syscall+0x98/0x254 arch/arm64/kernel/syscall.c:49
       el0_svc_common+0x130/0x23c arch/arm64/kernel/syscall.c:132
       do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:151
       el0_svc+0x5c/0x254 arch/arm64/kernel/entry-common.c:744
       el0t_64_sync_handler+0x84/0x12c arch/arm64/kernel/entry-common.c:763
       el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:596

-> #2 (&evdev->mutex){+.+.}-{4:4}:
       __mutex_lock_common+0x1d0/0x2678 kernel/locking/mutex.c:598
       __mutex_lock kernel/locking/mutex.c:760 [inline]
       mutex_lock_nested+0x2c/0x38 kernel/locking/mutex.c:812
       evdev_mark_dead drivers/input/evdev.c:1311 [inline]
       evdev_cleanup+0x30/0x15c drivers/input/evdev.c:1320
       evdev_disconnect+0x50/0xb4 drivers/input/evdev.c:1404
       __input_unregister_device+0x338/0x5cc drivers/input/input.c:2223
       input_unregister_device+0xa8/0xf4 drivers/input/input.c:2452
       uinput_destroy_device+0x598/0x774 drivers/input/misc/uinput.c:299
       uinput_release+0x44/0x60 drivers/input/misc/uinput.c:758
       __fput+0x340/0x75c fs/file_table.c:468
       ____fput+0x20/0x58 fs/file_table.c:496
       task_work_run+0x1dc/0x260 kernel/task_work.c:227
       resume_user_mode_work include/linux/resume_user_mode.h:50 [inline]
       exit_to_user_mode_loop+0xfc/0x168 kernel/entry/common.c:43
       exit_to_user_mode_prepare include/linux/irq-entry-common.h:225 [inline]
       arm64_exit_to_user_mode arch/arm64/kernel/entry-common.c:103 [inline]
       el0_svc+0x170/0x254 arch/arm64/kernel/entry-common.c:745
       el0t_64_sync_handler+0x84/0x12c arch/arm64/kernel/entry-common.c:763
       el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:596

-> #1 (input_mutex){+.+.}-{4:4}:
       __mutex_lock_common+0x1d0/0x2678 kernel/locking/mutex.c:598
       __mutex_lock kernel/locking/mutex.c:760 [inline]
       mutex_lock_interruptible_nested+0x2c/0x38 kernel/locking/mutex.c:835
       class_mutex_intr_constructor include/linux/mutex.h:230 [inline]
       input_register_device+0x8b0/0xe68 drivers/input/input.c:2408
       uinput_create_device+0x350/0x518 drivers/input/misc/uinput.c:365
       uinput_ioctl_handler+0x404/0x1340 drivers/input/misc/uinput.c:918
       uinput_ioctl+0x38/0x4c drivers/input/misc/uinput.c:1089
       vfs_ioctl fs/ioctl.c:51 [inline]
       __do_sys_ioctl fs/ioctl.c:598 [inline]
       __se_sys_ioctl fs/ioctl.c:584 [inline]
       __arm64_sys_ioctl+0x14c/0x1c4 fs/ioctl.c:584
       __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline]
       invoke_syscall+0x98/0x254 arch/arm64/kernel/syscall.c:49
       el0_svc_common+0x130/0x23c arch/arm64/kernel/syscall.c:132
       do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:151
       el0_svc+0x5c/0x254 arch/arm64/kernel/entry-common.c:744
       el0t_64_sync_handler+0x84/0x12c arch/arm64/kernel/entry-common.c:763
       el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:596

-> #0 (&newdev->mutex){+.+.}-{4:4}:
       check_prev_add kernel/locking/lockdep.c:3165 [inline]
       check_prevs_add kernel/locking/lockdep.c:3284 [inline]
       validate_chain kernel/locking/lockdep.c:3908 [inline]
       __lock_acquire+0x1774/0x30a4 kernel/locking/lockdep.c:5237
       lock_acquire+0x14c/0x2e0 kernel/locking/lockdep.c:5868
       __mutex_lock_common+0x1d0/0x2678 kernel/locking/mutex.c:598
       __mutex_lock kernel/locking/mutex.c:760 [inline]
       mutex_lock_interruptible_nested+0x2c/0x38 kernel/locking/mutex.c:835
       uinput_request_send drivers/input/misc/uinput.c:151 [inline]
       uinput_request_submit+0x168/0x600 drivers/input/misc/uinput.c:182
       uinput_dev_upload_effect+0x130/0x1c0 drivers/input/misc/uinput.c:257
       input_ff_upload+0x4d4/0x8e0 drivers/input/ff-core.c:148
       evdev_do_ioctl drivers/input/evdev.c:1181 [inline]
       evdev_ioctl_handler+0x18bc/0x2214 drivers/input/evdev.c:1270
       evdev_ioctl+0x38/0x4c drivers/input/evdev.c:1279
       vfs_ioctl fs/ioctl.c:51 [inline]
       __do_sys_ioctl fs/ioctl.c:598 [inline]
       __se_sys_ioctl fs/ioctl.c:584 [inline]
       __arm64_sys_ioctl+0x14c/0x1c4 fs/ioctl.c:584
       __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline]
       invoke_syscall+0x98/0x254 arch/arm64/kernel/syscall.c:49
       el0_svc_common+0x130/0x23c arch/arm64/kernel/syscall.c:132
       do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:151
       el0_svc+0x5c/0x254 arch/arm64/kernel/entry-common.c:744
       el0t_64_sync_handler+0x84/0x12c arch/arm64/kernel/entry-common.c:763
       el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:596

other info that might help us debug this:

Chain exists of:
  &newdev->mutex --> &evdev->mutex --> &ff->mutex

 Possible unsafe locking scenario:

       CPU0                    CPU1
       ----                    ----
  lock(&ff->mutex);
                               lock(&evdev->mutex);
                               lock(&ff->mutex);
  lock(&newdev->mutex);

 *** DEADLOCK ***

2 locks held by syz.1.28/6756:
 #0: ffff0000cd771118 (&evdev->mutex){+.+.}-{4:4}, at: evdev_ioctl_handler+0x114/0x2214 drivers/input/evdev.c:1261
 #1: ffff0000d35458b0 (&ff->mutex){+.+.}-{4:4}, at: class_mutex_constructor include/linux/mutex.h:228 [inline]
 #1: ffff0000d35458b0 (&ff->mutex){+.+.}-{4:4}, at: input_ff_upload+0x2f8/0x8e0 drivers/input/ff-core.c:122

stack backtrace:
CPU: 0 UID: 0 PID: 6756 Comm: syz.1.28 Not tainted syzkaller #0 PREEMPT 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/30/2025
Call trace:
 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:499 (C)
 __dump_stack+0x30/0x40 lib/dump_stack.c:94
 dump_stack_lvl+0xd8/0x12c lib/dump_stack.c:120
 dump_stack+0x1c/0x28 lib/dump_stack.c:129
 print_circular_bug+0x324/0x32c kernel/locking/lockdep.c:2043
 check_noncircular+0x154/0x174 kernel/locking/lockdep.c:2175
 check_prev_add kernel/locking/lockdep.c:3165 [inline]
 check_prevs_add kernel/locking/lockdep.c:3284 [inline]
 validate_chain kernel/locking/lockdep.c:3908 [inline]
 __lock_acquire+0x1774/0x30a4 kernel/locking/lockdep.c:5237
 lock_acquire+0x14c/0x2e0 kernel/locking/lockdep.c:5868
 __mutex_lock_common+0x1d0/0x2678 kernel/locking/mutex.c:598
 __mutex_lock kernel/locking/mutex.c:760 [inline]
 mutex_lock_interruptible_nested+0x2c/0x38 kernel/locking/mutex.c:835
 uinput_request_send drivers/input/misc/uinput.c:151 [inline]
 uinput_request_submit+0x168/0x600 drivers/input/misc/uinput.c:182
 uinput_dev_upload_effect+0x130/0x1c0 drivers/input/misc/uinput.c:257
 input_ff_upload+0x4d4/0x8e0 drivers/input/ff-core.c:148
 evdev_do_ioctl drivers/input/evdev.c:1181 [inline]
 evdev_ioctl_handler+0x18bc/0x2214 drivers/input/evdev.c:1270
 evdev_ioctl+0x38/0x4c drivers/input/evdev.c:1279
 vfs_ioctl fs/ioctl.c:51 [inline]
 __do_sys_ioctl fs/ioctl.c:598 [inline]
 __se_sys_ioctl fs/ioctl.c:584 [inline]
 __arm64_sys_ioctl+0x14c/0x1c4 fs/ioctl.c:584
 __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline]
 invoke_syscall+0x98/0x254 arch/arm64/kernel/syscall.c:49
 el0_svc_common+0x130/0x23c arch/arm64/kernel/syscall.c:132
 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:151
 el0_svc+0x5c/0x254 arch/arm64/kernel/entry-common.c:744
 el0t_64_sync_handler+0x84/0x12c arch/arm64/kernel/entry-common.c:763
 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:596

final repro crashed as (corrupted=false):
input: syz1 as /devices/virtual/input/input11
======================================================
WARNING: possible circular locking dependency detected
syzkaller #0 Not tainted
------------------------------------------------------
syz.1.28/6756 is trying to acquire lock:
ffff0000d36ea070 (&newdev->mutex){+.+.}-{4:4}, at: uinput_request_send drivers/input/misc/uinput.c:151 [inline]
ffff0000d36ea070 (&newdev->mutex){+.+.}-{4:4}, at: uinput_request_submit+0x168/0x600 drivers/input/misc/uinput.c:182

but task is already holding lock:
ffff0000d35458b0 (&ff->mutex){+.+.}-{4:4}, at: class_mutex_constructor include/linux/mutex.h:228 [inline]
ffff0000d35458b0 (&ff->mutex){+.+.}-{4:4}, at: input_ff_upload+0x2f8/0x8e0 drivers/input/ff-core.c:122

which lock already depends on the new lock.


the existing dependency chain (in reverse order) is:

-> #3 (&ff->mutex){+.+.}-{4:4}:
       __mutex_lock_common+0x1d0/0x2678 kernel/locking/mutex.c:598
       __mutex_lock kernel/locking/mutex.c:760 [inline]
       mutex_lock_nested+0x2c/0x38 kernel/locking/mutex.c:812
       class_mutex_constructor include/linux/mutex.h:228 [inline]
       input_ff_upload+0x2f8/0x8e0 drivers/input/ff-core.c:122
       evdev_do_ioctl drivers/input/evdev.c:1181 [inline]
       evdev_ioctl_handler+0x18bc/0x2214 drivers/input/evdev.c:1270
       evdev_ioctl+0x38/0x4c drivers/input/evdev.c:1279
       vfs_ioctl fs/ioctl.c:51 [inline]
       __do_sys_ioctl fs/ioctl.c:598 [inline]
       __se_sys_ioctl fs/ioctl.c:584 [inline]
       __arm64_sys_ioctl+0x14c/0x1c4 fs/ioctl.c:584
       __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline]
       invoke_syscall+0x98/0x254 arch/arm64/kernel/syscall.c:49
       el0_svc_common+0x130/0x23c arch/arm64/kernel/syscall.c:132
       do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:151
       el0_svc+0x5c/0x254 arch/arm64/kernel/entry-common.c:744
       el0t_64_sync_handler+0x84/0x12c arch/arm64/kernel/entry-common.c:763
       el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:596

-> #2 (&evdev->mutex){+.+.}-{4:4}:
       __mutex_lock_common+0x1d0/0x2678 kernel/locking/mutex.c:598
       __mutex_lock kernel/locking/mutex.c:760 [inline]
       mutex_lock_nested+0x2c/0x38 kernel/locking/mutex.c:812
       evdev_mark_dead drivers/input/evdev.c:1311 [inline]
       evdev_cleanup+0x30/0x15c drivers/input/evdev.c:1320
       evdev_disconnect+0x50/0xb4 drivers/input/evdev.c:1404
       __input_unregister_device+0x338/0x5cc drivers/input/input.c:2223
       input_unregister_device+0xa8/0xf4 drivers/input/input.c:2452
       uinput_destroy_device+0x598/0x774 drivers/input/misc/uinput.c:299
       uinput_release+0x44/0x60 drivers/input/misc/uinput.c:758
       __fput+0x340/0x75c fs/file_table.c:468
       ____fput+0x20/0x58 fs/file_table.c:496
       task_work_run+0x1dc/0x260 kernel/task_work.c:227
       resume_user_mode_work include/linux/resume_user_mode.h:50 [inline]
       exit_to_user_mode_loop+0xfc/0x168 kernel/entry/common.c:43
       exit_to_user_mode_prepare include/linux/irq-entry-common.h:225 [inline]
       arm64_exit_to_user_mode arch/arm64/kernel/entry-common.c:103 [inline]
       el0_svc+0x170/0x254 arch/arm64/kernel/entry-common.c:745
       el0t_64_sync_handler+0x84/0x12c arch/arm64/kernel/entry-common.c:763
       el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:596

-> #1 (input_mutex){+.+.}-{4:4}:
       __mutex_lock_common+0x1d0/0x2678 kernel/locking/mutex.c:598
       __mutex_lock kernel/locking/mutex.c:760 [inline]
       mutex_lock_interruptible_nested+0x2c/0x38 kernel/locking/mutex.c:835
       class_mutex_intr_constructor include/linux/mutex.h:230 [inline]
       input_register_device+0x8b0/0xe68 drivers/input/input.c:2408
       uinput_create_device+0x350/0x518 drivers/input/misc/uinput.c:365
       uinput_ioctl_handler+0x404/0x1340 drivers/input/misc/uinput.c:918
       uinput_ioctl+0x38/0x4c drivers/input/misc/uinput.c:1089
       vfs_ioctl fs/ioctl.c:51 [inline]
       __do_sys_ioctl fs/ioctl.c:598 [inline]
       __se_sys_ioctl fs/ioctl.c:584 [inline]
       __arm64_sys_ioctl+0x14c/0x1c4 fs/ioctl.c:584
       __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline]
       invoke_syscall+0x98/0x254 arch/arm64/kernel/syscall.c:49
       el0_svc_common+0x130/0x23c arch/arm64/kernel/syscall.c:132
       do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:151
       el0_svc+0x5c/0x254 arch/arm64/kernel/entry-common.c:744
       el0t_64_sync_handler+0x84/0x12c arch/arm64/kernel/entry-common.c:763
       el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:596

-> #0 (&newdev->mutex){+.+.}-{4:4}:
       check_prev_add kernel/locking/lockdep.c:3165 [inline]
       check_prevs_add kernel/locking/lockdep.c:3284 [inline]
       validate_chain kernel/locking/lockdep.c:3908 [inline]
       __lock_acquire+0x1774/0x30a4 kernel/locking/lockdep.c:5237
       lock_acquire+0x14c/0x2e0 kernel/locking/lockdep.c:5868
       __mutex_lock_common+0x1d0/0x2678 kernel/locking/mutex.c:598
       __mutex_lock kernel/locking/mutex.c:760 [inline]
       mutex_lock_interruptible_nested+0x2c/0x38 kernel/locking/mutex.c:835
       uinput_request_send drivers/input/misc/uinput.c:151 [inline]
       uinput_request_submit+0x168/0x600 drivers/input/misc/uinput.c:182
       uinput_dev_upload_effect+0x130/0x1c0 drivers/input/misc/uinput.c:257
       input_ff_upload+0x4d4/0x8e0 drivers/input/ff-core.c:148
       evdev_do_ioctl drivers/input/evdev.c:1181 [inline]
       evdev_ioctl_handler+0x18bc/0x2214 drivers/input/evdev.c:1270
       evdev_ioctl+0x38/0x4c drivers/input/evdev.c:1279
       vfs_ioctl fs/ioctl.c:51 [inline]
       __do_sys_ioctl fs/ioctl.c:598 [inline]
       __se_sys_ioctl fs/ioctl.c:584 [inline]
       __arm64_sys_ioctl+0x14c/0x1c4 fs/ioctl.c:584
       __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline]
       invoke_syscall+0x98/0x254 arch/arm64/kernel/syscall.c:49
       el0_svc_common+0x130/0x23c arch/arm64/kernel/syscall.c:132
       do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:151
       el0_svc+0x5c/0x254 arch/arm64/kernel/entry-common.c:744
       el0t_64_sync_handler+0x84/0x12c arch/arm64/kernel/entry-common.c:763
       el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:596

other info that might help us debug this:

Chain exists of:
  &newdev->mutex --> &evdev->mutex --> &ff->mutex

 Possible unsafe locking scenario:

       CPU0                    CPU1
       ----                    ----
  lock(&ff->mutex);
                               lock(&evdev->mutex);
                               lock(&ff->mutex);
  lock(&newdev->mutex);

 *** DEADLOCK ***

2 locks held by syz.1.28/6756:
 #0: ffff0000cd771118 (&evdev->mutex){+.+.}-{4:4}, at: evdev_ioctl_handler+0x114/0x2214 drivers/input/evdev.c:1261
 #1: ffff0000d35458b0 (&ff->mutex){+.+.}-{4:4}, at: class_mutex_constructor include/linux/mutex.h:228 [inline]
 #1: ffff0000d35458b0 (&ff->mutex){+.+.}-{4:4}, at: input_ff_upload+0x2f8/0x8e0 drivers/input/ff-core.c:122

stack backtrace:
CPU: 0 UID: 0 PID: 6756 Comm: syz.1.28 Not tainted syzkaller #0 PREEMPT 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/30/2025
Call trace:
 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:499 (C)
 __dump_stack+0x30/0x40 lib/dump_stack.c:94
 dump_stack_lvl+0xd8/0x12c lib/dump_stack.c:120
 dump_stack+0x1c/0x28 lib/dump_stack.c:129
 print_circular_bug+0x324/0x32c kernel/locking/lockdep.c:2043
 check_noncircular+0x154/0x174 kernel/locking/lockdep.c:2175
 check_prev_add kernel/locking/lockdep.c:3165 [inline]
 check_prevs_add kernel/locking/lockdep.c:3284 [inline]
 validate_chain kernel/locking/lockdep.c:3908 [inline]
 __lock_acquire+0x1774/0x30a4 kernel/locking/lockdep.c:5237
 lock_acquire+0x14c/0x2e0 kernel/locking/lockdep.c:5868
 __mutex_lock_common+0x1d0/0x2678 kernel/locking/mutex.c:598
 __mutex_lock kernel/locking/mutex.c:760 [inline]
 mutex_lock_interruptible_nested+0x2c/0x38 kernel/locking/mutex.c:835
 uinput_request_send drivers/input/misc/uinput.c:151 [inline]
 uinput_request_submit+0x168/0x600 drivers/input/misc/uinput.c:182
 uinput_dev_upload_effect+0x130/0x1c0 drivers/input/misc/uinput.c:257
 input_ff_upload+0x4d4/0x8e0 drivers/input/ff-core.c:148
 evdev_do_ioctl drivers/input/evdev.c:1181 [inline]
 evdev_ioctl_handler+0x18bc/0x2214 drivers/input/evdev.c:1270
 evdev_ioctl+0x38/0x4c drivers/input/evdev.c:1279
 vfs_ioctl fs/ioctl.c:51 [inline]
 __do_sys_ioctl fs/ioctl.c:598 [inline]
 __se_sys_ioctl fs/ioctl.c:584 [inline]
 __arm64_sys_ioctl+0x14c/0x1c4 fs/ioctl.c:584
 __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline]
 invoke_syscall+0x98/0x254 arch/arm64/kernel/syscall.c:49
 el0_svc_common+0x130/0x23c arch/arm64/kernel/syscall.c:132
 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:151
 el0_svc+0x5c/0x254 arch/arm64/kernel/entry-common.c:744
 el0t_64_sync_handler+0x84/0x12c arch/arm64/kernel/entry-common.c:763
 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:596