Extracting prog: 1m4.058007412s Minimizing prog: 6m18.686855415s Simplifying prog options: 2m20.239376229s Extracting C: 20.3528939s Simplifying C: 0s 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:4 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 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$uinput(0xffffffffffffff9c, &(0x7f0000000040), 0x0, 0x0) ioctl$UI_DEV_SETUP(r0, 0x405c5503, &(0x7f0000000180)={{}, 'syz1\x00', 0x3e}) ioctl$UI_SET_FFBIT(r0, 0x4004556b, 0x51) ioctl$UI_DEV_CREATE(r0, 0x5501) r1 = syz_open_dev$evdev(&(0x7f00000000c0), 0x40, 0x0) ioctl$EVIOCSFF(r1, 0x40304580, &(0x7f0000000300)={0x50, 0xffff}) program crashed: possible deadlock in input_ff_flush single: successfully extracted reproducer found reproducer with 6 syscalls minimizing guilty program testing program (duration=30s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 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 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, &(0x7f0000000040), 0x0, 0x0) ioctl$UI_DEV_SETUP(r0, 0x405c5503, &(0x7f0000000180)={{}, 'syz1\x00', 0x3e}) ioctl$UI_SET_FFBIT(r0, 0x4004556b, 0x51) ioctl$UI_DEV_CREATE(r0, 0x5501) syz_open_dev$evdev(&(0x7f00000000c0), 0x40, 0x0) program did not crash testing program (duration=30s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 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 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, &(0x7f0000000040), 0x0, 0x0) ioctl$UI_DEV_SETUP(r0, 0x405c5503, &(0x7f0000000180)={{}, 'syz1\x00', 0x3e}) ioctl$UI_SET_FFBIT(r0, 0x4004556b, 0x51) ioctl$UI_DEV_CREATE(r0, 0x5501) ioctl$EVIOCSFF(0xffffffffffffffff, 0x40304580, &(0x7f0000000300)={0x50, 0xffff}) program did not crash testing program (duration=30s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 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 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, &(0x7f0000000040), 0x0, 0x0) ioctl$UI_DEV_SETUP(r0, 0x405c5503, &(0x7f0000000180)={{}, 'syz1\x00', 0x3e}) ioctl$UI_SET_FFBIT(r0, 0x4004556b, 0x51) r1 = syz_open_dev$evdev(&(0x7f00000000c0), 0x40, 0x0) ioctl$EVIOCSFF(r1, 0x40304580, &(0x7f0000000300)={0x50, 0xffff}) program did not crash testing program (duration=30s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 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 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, &(0x7f0000000040), 0x0, 0x0) ioctl$UI_DEV_SETUP(r0, 0x405c5503, &(0x7f0000000180)={{}, 'syz1\x00', 0x3e}) ioctl$UI_DEV_CREATE(r0, 0x5501) r1 = syz_open_dev$evdev(&(0x7f00000000c0), 0x40, 0x0) ioctl$EVIOCSFF(r1, 0x40304580, &(0x7f0000000300)={0x50, 0xffff}) program did not crash testing program (duration=30s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 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 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, &(0x7f0000000040), 0x0, 0x0) ioctl$UI_SET_FFBIT(r0, 0x4004556b, 0x51) ioctl$UI_DEV_CREATE(r0, 0x5501) r1 = syz_open_dev$evdev(&(0x7f00000000c0), 0x40, 0x0) ioctl$EVIOCSFF(r1, 0x40304580, &(0x7f0000000300)={0x50, 0xffff}) program did not crash testing program (duration=30s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 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 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, &(0x7f0000000180)={{}, 'syz1\x00', 0x3e}) ioctl$UI_SET_FFBIT(0xffffffffffffffff, 0x4004556b, 0x51) ioctl$UI_DEV_CREATE(0xffffffffffffffff, 0x5501) r0 = syz_open_dev$evdev(&(0x7f00000000c0), 0x40, 0x0) ioctl$EVIOCSFF(r0, 0x40304580, &(0x7f0000000300)={0x50, 0xffff}) program did not crash testing program (duration=30s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 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 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$uinput(0xffffffffffffff9c, 0x0, 0x0, 0x0) ioctl$UI_DEV_SETUP(r0, 0x405c5503, &(0x7f0000000180)={{}, 'syz1\x00', 0x3e}) ioctl$UI_SET_FFBIT(r0, 0x4004556b, 0x51) ioctl$UI_DEV_CREATE(r0, 0x5501) r1 = syz_open_dev$evdev(&(0x7f00000000c0), 0x40, 0x0) ioctl$EVIOCSFF(r1, 0x40304580, &(0x7f0000000300)={0x50, 0xffff}) program did not crash testing program (duration=30s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 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 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$uinput(0xffffffffffffff9c, &(0x7f0000000040), 0x0, 0x0) ioctl$UI_DEV_SETUP(r0, 0x405c5503, 0x0) ioctl$UI_SET_FFBIT(r0, 0x4004556b, 0x51) ioctl$UI_DEV_CREATE(r0, 0x5501) r1 = syz_open_dev$evdev(&(0x7f00000000c0), 0x40, 0x0) ioctl$EVIOCSFF(r1, 0x40304580, &(0x7f0000000300)={0x50, 0xffff}) program did not crash testing program (duration=30s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 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 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$uinput(0xffffffffffffff9c, &(0x7f0000000040), 0x0, 0x0) ioctl$UI_DEV_SETUP(r0, 0x405c5503, &(0x7f0000000180)={{}, 'syz1\x00', 0x3e}) ioctl$UI_SET_FFBIT(r0, 0x4004556b, 0x51) ioctl$UI_DEV_CREATE(r0, 0x5501) r1 = syz_open_dev$evdev(0x0, 0x40, 0x0) ioctl$EVIOCSFF(r1, 0x40304580, &(0x7f0000000300)={0x50, 0xffff}) program did not crash testing program (duration=30s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 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 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$uinput(0xffffffffffffff9c, &(0x7f0000000040), 0x0, 0x0) ioctl$UI_DEV_SETUP(r0, 0x405c5503, &(0x7f0000000180)={{}, 'syz1\x00', 0x3e}) ioctl$UI_SET_FFBIT(r0, 0x4004556b, 0x51) ioctl$UI_DEV_CREATE(r0, 0x5501) r1 = syz_open_dev$evdev(&(0x7f00000000c0), 0x40, 0x0) ioctl$EVIOCSFF(r1, 0x40304580, 0x0) program did not crash extracting C reproducer testing compiled C program (duration=30s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 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 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 a never seen crash title: possible deadlock in uinput_request_submit, ignore simplifying guilty program options testing program (duration=30s, {Threaded:false Repeat:true RepeatTimes:0 Procs:4 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 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$uinput(0xffffffffffffff9c, &(0x7f0000000040), 0x0, 0x0) ioctl$UI_DEV_SETUP(r0, 0x405c5503, &(0x7f0000000180)={{}, 'syz1\x00', 0x3e}) ioctl$UI_SET_FFBIT(r0, 0x4004556b, 0x51) ioctl$UI_DEV_CREATE(r0, 0x5501) r1 = syz_open_dev$evdev(&(0x7f00000000c0), 0x40, 0x0) ioctl$EVIOCSFF(r1, 0x40304580, &(0x7f0000000300)={0x50, 0xffff}) program crashed: possible deadlock in input_ff_flush extracting C reproducer testing compiled C program (duration=30s, {Threaded:false Repeat:true RepeatTimes:0 Procs:4 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 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 a never seen crash title: possible deadlock in uinput_request_submit, ignore testing program (duration=30s, {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 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$uinput(0xffffffffffffff9c, &(0x7f0000000040), 0x0, 0x0) ioctl$UI_DEV_SETUP(r0, 0x405c5503, &(0x7f0000000180)={{}, 'syz1\x00', 0x3e}) ioctl$UI_SET_FFBIT(r0, 0x4004556b, 0x51) ioctl$UI_DEV_CREATE(r0, 0x5501) r1 = syz_open_dev$evdev(&(0x7f00000000c0), 0x40, 0x0) ioctl$EVIOCSFF(r1, 0x40304580, &(0x7f0000000300)={0x50, 0xffff}) program did not crash testing program (duration=30s, {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 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$uinput(0xffffffffffffff9c, &(0x7f0000000040), 0x0, 0x0) ioctl$UI_DEV_SETUP(r0, 0x405c5503, &(0x7f0000000180)={{}, 'syz1\x00', 0x3e}) ioctl$UI_SET_FFBIT(r0, 0x4004556b, 0x51) ioctl$UI_DEV_CREATE(r0, 0x5501) r1 = syz_open_dev$evdev(&(0x7f00000000c0), 0x40, 0x0) ioctl$EVIOCSFF(r1, 0x40304580, &(0x7f0000000300)={0x50, 0xffff}) program crashed: possible deadlock in uinput_request_submit a never seen crash title: possible deadlock in uinput_request_submit, ignore reproducing took 10m7.406972313s repro crashed as (corrupted=false): ====================================================== WARNING: possible circular locking dependency detected 6.13.0-rc5-syzkaller-00004-gccb98ccef0e5 #0 Not tainted ------------------------------------------------------ udevd/5941 is trying to acquire lock: ffff8880293600b0 (&ff->mutex){+.+.}-{4:4}, at: input_ff_flush+0x63/0x170 drivers/input/ff-core.c:242 but task is already holding lock: ffff88804d45b2c0 (&dev->mutex#2){+.+.}-{4:4}, at: input_flush_device+0x4b/0xd0 drivers/input/input.c:647 which lock already depends on the new lock. the existing dependency chain (in reverse order) is: -> #3 (&dev->mutex#2){+.+.}-{4:4}: __mutex_lock_common kernel/locking/mutex.c:585 [inline] __mutex_lock+0x19b/0xa60 kernel/locking/mutex.c:735 input_register_handle+0xca/0x5e0 drivers/input/input.c:2725 kbd_connect+0xca/0x160 drivers/tty/vt/keyboard.c:1587 input_attach_handler.isra.0+0x181/0x260 drivers/input/input.c:1032 input_register_device+0xa84/0x1110 drivers/input/input.c:2475 acpi_button_add+0x57a/0xb70 drivers/acpi/button.c:615 acpi_device_probe+0xc6/0x330 drivers/acpi/bus.c:1076 call_driver_probe drivers/base/dd.c:579 [inline] really_probe+0x23e/0xa90 drivers/base/dd.c:658 __driver_probe_device+0x1de/0x440 drivers/base/dd.c:800 driver_probe_device+0x4c/0x1b0 drivers/base/dd.c:830 __driver_attach+0x283/0x580 drivers/base/dd.c:1216 bus_for_each_dev+0x13c/0x1d0 drivers/base/bus.c:370 bus_add_driver+0x2e9/0x690 drivers/base/bus.c:675 driver_register+0x15c/0x4b0 drivers/base/driver.c:246 __acpi_bus_register_driver+0xdf/0x130 drivers/acpi/bus.c:1027 acpi_button_register_driver drivers/acpi/button.c:745 [inline] acpi_button_driver_init+0x82/0x110 drivers/acpi/button.c:754 do_one_initcall+0x128/0x700 init/main.c:1266 do_initcall_level init/main.c:1328 [inline] do_initcalls init/main.c:1344 [inline] do_basic_setup init/main.c:1363 [inline] kernel_init_freeable+0x5c7/0x900 init/main.c:1577 kernel_init+0x1c/0x2b0 init/main.c:1466 ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244 -> #2 (input_mutex){+.+.}-{4:4}: __mutex_lock_common kernel/locking/mutex.c:585 [inline] __mutex_lock+0x19b/0xa60 kernel/locking/mutex.c:735 input_register_device+0x98a/0x1110 drivers/input/input.c:2468 uinput_create_device drivers/input/misc/uinput.c:365 [inline] uinput_ioctl_handler.isra.0+0x130c/0x1d70 drivers/input/misc/uinput.c:918 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:906 [inline] __se_sys_ioctl fs/ioctl.c:892 [inline] __x64_sys_ioctl+0x190/0x200 fs/ioctl.c:892 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f -> #1 (&newdev->mutex){+.+.}-{4:4}: __mutex_lock_common kernel/locking/mutex.c:585 [inline] __mutex_lock+0x19b/0xa60 kernel/locking/mutex.c:735 uinput_request_send drivers/input/misc/uinput.c:151 [inline] uinput_request_submit.part.0+0x25/0x2e0 drivers/input/misc/uinput.c:182 uinput_request_submit drivers/input/misc/uinput.c:179 [inline] uinput_dev_upload_effect+0x175/0x1f0 drivers/input/misc/uinput.c:257 input_ff_upload+0x55b/0xbf0 drivers/input/ff-core.c:152 evdev_do_ioctl+0xf45/0x1ae0 drivers/input/evdev.c:1181 evdev_ioctl_handler drivers/input/evdev.c:1270 [inline] evdev_ioctl+0x16a/0x1a0 drivers/input/evdev.c:1279 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:906 [inline] __se_sys_ioctl fs/ioctl.c:892 [inline] __x64_sys_ioctl+0x190/0x200 fs/ioctl.c:892 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f -> #0 (&ff->mutex){+.+.}-{4:4}: check_prev_add kernel/locking/lockdep.c:3161 [inline] check_prevs_add kernel/locking/lockdep.c:3280 [inline] validate_chain kernel/locking/lockdep.c:3904 [inline] __lock_acquire+0x249e/0x3c40 kernel/locking/lockdep.c:5226 lock_acquire.part.0+0x11b/0x380 kernel/locking/lockdep.c:5849 __mutex_lock_common kernel/locking/mutex.c:585 [inline] __mutex_lock+0x19b/0xa60 kernel/locking/mutex.c:735 input_ff_flush+0x63/0x170 drivers/input/ff-core.c:242 uinput_dev_flush+0x2a/0x40 drivers/input/misc/uinput.c:283 input_flush_device+0x97/0xd0 drivers/input/input.c:652 evdev_release+0x33d/0x400 drivers/input/evdev.c:435 __fput+0x3f8/0xb60 fs/file_table.c:450 __fput_sync+0xa1/0xc0 fs/file_table.c:535 __do_sys_close fs/open.c:1554 [inline] __se_sys_close fs/open.c:1539 [inline] __x64_sys_close+0x86/0x100 fs/open.c:1539 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f other info that might help us debug this: Chain exists of: &ff->mutex --> input_mutex --> &dev->mutex#2 Possible unsafe locking scenario: CPU0 CPU1 ---- ---- lock(&dev->mutex#2); lock(input_mutex); lock(&dev->mutex#2); lock(&ff->mutex); *** DEADLOCK *** 2 locks held by udevd/5941: #0: ffff888024d58118 (&evdev->mutex){+.+.}-{4:4}, at: evdev_release+0x77/0x400 drivers/input/evdev.c:432 #1: ffff88804d45b2c0 (&dev->mutex#2){+.+.}-{4:4}, at: input_flush_device+0x4b/0xd0 drivers/input/input.c:647 stack backtrace: CPU: 2 UID: 0 PID: 5941 Comm: udevd Not tainted 6.13.0-rc5-syzkaller-00004-gccb98ccef0e5 #0 Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014 Call Trace: __dump_stack lib/dump_stack.c:94 [inline] dump_stack_lvl+0x116/0x1f0 lib/dump_stack.c:120 print_circular_bug+0x419/0x5d0 kernel/locking/lockdep.c:2074 check_noncircular+0x31a/0x400 kernel/locking/lockdep.c:2206 check_prev_add kernel/locking/lockdep.c:3161 [inline] check_prevs_add kernel/locking/lockdep.c:3280 [inline] validate_chain kernel/locking/lockdep.c:3904 [inline] __lock_acquire+0x249e/0x3c40 kernel/locking/lockdep.c:5226 lock_acquire.part.0+0x11b/0x380 kernel/locking/lockdep.c:5849 __mutex_lock_common kernel/locking/mutex.c:585 [inline] __mutex_lock+0x19b/0xa60 kernel/locking/mutex.c:735 input_ff_flush+0x63/0x170 drivers/input/ff-core.c:242 uinput_dev_flush+0x2a/0x40 drivers/input/misc/uinput.c:283 input_flush_device+0x97/0xd0 drivers/input/input.c:652 evdev_release+0x33d/0x400 drivers/input/evdev.c:435 __fput+0x3f8/0xb60 fs/file_table.c:450 __fput_sync+0xa1/0xc0 fs/file_table.c:535 __do_sys_close fs/open.c:1554 [inline] __se_sys_close fs/open.c:1539 [inline] __x64_sys_close+0x86/0x100 fs/open.c:1539 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f1d757850a8 Code: 48 8b 05 83 9d 0d 00 64 c7 00 16 00 00 00 83 c8 ff 48 83 c4 20 5b c3 64 8b 04 25 18 00 00 00 85 c0 75 20 b8 03 00 00 00 0f 05 <48> 3d 00 f0 ff ff 76 5b 48 8b 15 51 9d 0d 00 f7 d8 64 89 02 48 83 RSP: 002b:00007fffb61bcef8 EFLAGS: 00000246 ORIG_RAX: 0000000000000003 RAX: ffffffffffffffda RBX: 00007f1d756b10e0 RCX: 00007f1d757850a8 RDX: fffffffffffffe60 RSI: 0000000080184540 RDI: 0000000000000008 RBP: 00005620d7ea5160 R08: 00000000ffffffff R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000016 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 final repro crashed as (corrupted=false): ====================================================== WARNING: possible circular locking dependency detected 6.13.0-rc5-syzkaller-00004-gccb98ccef0e5 #0 Not tainted ------------------------------------------------------ udevd/5941 is trying to acquire lock: ffff8880293600b0 (&ff->mutex){+.+.}-{4:4}, at: input_ff_flush+0x63/0x170 drivers/input/ff-core.c:242 but task is already holding lock: ffff88804d45b2c0 (&dev->mutex#2){+.+.}-{4:4}, at: input_flush_device+0x4b/0xd0 drivers/input/input.c:647 which lock already depends on the new lock. the existing dependency chain (in reverse order) is: -> #3 (&dev->mutex#2){+.+.}-{4:4}: __mutex_lock_common kernel/locking/mutex.c:585 [inline] __mutex_lock+0x19b/0xa60 kernel/locking/mutex.c:735 input_register_handle+0xca/0x5e0 drivers/input/input.c:2725 kbd_connect+0xca/0x160 drivers/tty/vt/keyboard.c:1587 input_attach_handler.isra.0+0x181/0x260 drivers/input/input.c:1032 input_register_device+0xa84/0x1110 drivers/input/input.c:2475 acpi_button_add+0x57a/0xb70 drivers/acpi/button.c:615 acpi_device_probe+0xc6/0x330 drivers/acpi/bus.c:1076 call_driver_probe drivers/base/dd.c:579 [inline] really_probe+0x23e/0xa90 drivers/base/dd.c:658 __driver_probe_device+0x1de/0x440 drivers/base/dd.c:800 driver_probe_device+0x4c/0x1b0 drivers/base/dd.c:830 __driver_attach+0x283/0x580 drivers/base/dd.c:1216 bus_for_each_dev+0x13c/0x1d0 drivers/base/bus.c:370 bus_add_driver+0x2e9/0x690 drivers/base/bus.c:675 driver_register+0x15c/0x4b0 drivers/base/driver.c:246 __acpi_bus_register_driver+0xdf/0x130 drivers/acpi/bus.c:1027 acpi_button_register_driver drivers/acpi/button.c:745 [inline] acpi_button_driver_init+0x82/0x110 drivers/acpi/button.c:754 do_one_initcall+0x128/0x700 init/main.c:1266 do_initcall_level init/main.c:1328 [inline] do_initcalls init/main.c:1344 [inline] do_basic_setup init/main.c:1363 [inline] kernel_init_freeable+0x5c7/0x900 init/main.c:1577 kernel_init+0x1c/0x2b0 init/main.c:1466 ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244 -> #2 (input_mutex){+.+.}-{4:4}: __mutex_lock_common kernel/locking/mutex.c:585 [inline] __mutex_lock+0x19b/0xa60 kernel/locking/mutex.c:735 input_register_device+0x98a/0x1110 drivers/input/input.c:2468 uinput_create_device drivers/input/misc/uinput.c:365 [inline] uinput_ioctl_handler.isra.0+0x130c/0x1d70 drivers/input/misc/uinput.c:918 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:906 [inline] __se_sys_ioctl fs/ioctl.c:892 [inline] __x64_sys_ioctl+0x190/0x200 fs/ioctl.c:892 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f -> #1 (&newdev->mutex){+.+.}-{4:4}: __mutex_lock_common kernel/locking/mutex.c:585 [inline] __mutex_lock+0x19b/0xa60 kernel/locking/mutex.c:735 uinput_request_send drivers/input/misc/uinput.c:151 [inline] uinput_request_submit.part.0+0x25/0x2e0 drivers/input/misc/uinput.c:182 uinput_request_submit drivers/input/misc/uinput.c:179 [inline] uinput_dev_upload_effect+0x175/0x1f0 drivers/input/misc/uinput.c:257 input_ff_upload+0x55b/0xbf0 drivers/input/ff-core.c:152 evdev_do_ioctl+0xf45/0x1ae0 drivers/input/evdev.c:1181 evdev_ioctl_handler drivers/input/evdev.c:1270 [inline] evdev_ioctl+0x16a/0x1a0 drivers/input/evdev.c:1279 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:906 [inline] __se_sys_ioctl fs/ioctl.c:892 [inline] __x64_sys_ioctl+0x190/0x200 fs/ioctl.c:892 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f -> #0 (&ff->mutex){+.+.}-{4:4}: check_prev_add kernel/locking/lockdep.c:3161 [inline] check_prevs_add kernel/locking/lockdep.c:3280 [inline] validate_chain kernel/locking/lockdep.c:3904 [inline] __lock_acquire+0x249e/0x3c40 kernel/locking/lockdep.c:5226 lock_acquire.part.0+0x11b/0x380 kernel/locking/lockdep.c:5849 __mutex_lock_common kernel/locking/mutex.c:585 [inline] __mutex_lock+0x19b/0xa60 kernel/locking/mutex.c:735 input_ff_flush+0x63/0x170 drivers/input/ff-core.c:242 uinput_dev_flush+0x2a/0x40 drivers/input/misc/uinput.c:283 input_flush_device+0x97/0xd0 drivers/input/input.c:652 evdev_release+0x33d/0x400 drivers/input/evdev.c:435 __fput+0x3f8/0xb60 fs/file_table.c:450 __fput_sync+0xa1/0xc0 fs/file_table.c:535 __do_sys_close fs/open.c:1554 [inline] __se_sys_close fs/open.c:1539 [inline] __x64_sys_close+0x86/0x100 fs/open.c:1539 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f other info that might help us debug this: Chain exists of: &ff->mutex --> input_mutex --> &dev->mutex#2 Possible unsafe locking scenario: CPU0 CPU1 ---- ---- lock(&dev->mutex#2); lock(input_mutex); lock(&dev->mutex#2); lock(&ff->mutex); *** DEADLOCK *** 2 locks held by udevd/5941: #0: ffff888024d58118 (&evdev->mutex){+.+.}-{4:4}, at: evdev_release+0x77/0x400 drivers/input/evdev.c:432 #1: ffff88804d45b2c0 (&dev->mutex#2){+.+.}-{4:4}, at: input_flush_device+0x4b/0xd0 drivers/input/input.c:647 stack backtrace: CPU: 2 UID: 0 PID: 5941 Comm: udevd Not tainted 6.13.0-rc5-syzkaller-00004-gccb98ccef0e5 #0 Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014 Call Trace: __dump_stack lib/dump_stack.c:94 [inline] dump_stack_lvl+0x116/0x1f0 lib/dump_stack.c:120 print_circular_bug+0x419/0x5d0 kernel/locking/lockdep.c:2074 check_noncircular+0x31a/0x400 kernel/locking/lockdep.c:2206 check_prev_add kernel/locking/lockdep.c:3161 [inline] check_prevs_add kernel/locking/lockdep.c:3280 [inline] validate_chain kernel/locking/lockdep.c:3904 [inline] __lock_acquire+0x249e/0x3c40 kernel/locking/lockdep.c:5226 lock_acquire.part.0+0x11b/0x380 kernel/locking/lockdep.c:5849 __mutex_lock_common kernel/locking/mutex.c:585 [inline] __mutex_lock+0x19b/0xa60 kernel/locking/mutex.c:735 input_ff_flush+0x63/0x170 drivers/input/ff-core.c:242 uinput_dev_flush+0x2a/0x40 drivers/input/misc/uinput.c:283 input_flush_device+0x97/0xd0 drivers/input/input.c:652 evdev_release+0x33d/0x400 drivers/input/evdev.c:435 __fput+0x3f8/0xb60 fs/file_table.c:450 __fput_sync+0xa1/0xc0 fs/file_table.c:535 __do_sys_close fs/open.c:1554 [inline] __se_sys_close fs/open.c:1539 [inline] __x64_sys_close+0x86/0x100 fs/open.c:1539 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f1d757850a8 Code: 48 8b 05 83 9d 0d 00 64 c7 00 16 00 00 00 83 c8 ff 48 83 c4 20 5b c3 64 8b 04 25 18 00 00 00 85 c0 75 20 b8 03 00 00 00 0f 05 <48> 3d 00 f0 ff ff 76 5b 48 8b 15 51 9d 0d 00 f7 d8 64 89 02 48 83 RSP: 002b:00007fffb61bcef8 EFLAGS: 00000246 ORIG_RAX: 0000000000000003 RAX: ffffffffffffffda RBX: 00007f1d756b10e0 RCX: 00007f1d757850a8 RDX: fffffffffffffe60 RSI: 0000000080184540 RDI: 0000000000000008 RBP: 00005620d7ea5160 R08: 00000000ffffffff R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000016 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000