Extracting prog: 1m11.952681198s Minimizing prog: 7m41.295786037s Simplifying prog options: 1m51.947883138s Extracting C: 25.640581294s 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$uinput(0xffffffffffffff9c, &(0x7f0000000600), 0x0, 0x0) ioctl$UI_DEV_SETUP(r0, 0x405c5503, &(0x7f0000000280)={{}, 'syz0\x00', 0x45}) 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, &(0x7f0000000180)={0x50, 0xffff, 0x2, {0x0, 0x40}, {0x1, 0x7}, @ramp}) program crashed: possible deadlock in input_ff_flush single: successfully extracted reproducer found reproducer with 6 syscalls minimizing guilty program testing program (duration=40.980969799s, {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, &(0x7f0000000600), 0x0, 0x0) ioctl$UI_DEV_SETUP(r0, 0x405c5503, &(0x7f0000000280)={{}, 'syz0\x00', 0x45}) ioctl$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=40.980969799s, {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, &(0x7f0000000600), 0x0, 0x0) ioctl$UI_DEV_SETUP(r0, 0x405c5503, &(0x7f0000000280)={{}, 'syz0\x00', 0x45}) ioctl$UI_SET_FFBIT(r0, 0x4004556b, 0x51) ioctl$UI_DEV_CREATE(r0, 0x5501) ioctl$EVIOCSFF(0xffffffffffffffff, 0x40304580, &(0x7f0000000180)={0x50, 0xffff, 0x2, {0x0, 0x40}, {0x1, 0x7}, @ramp}) program did not crash testing program (duration=40.980969799s, {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, &(0x7f0000000600), 0x0, 0x0) ioctl$UI_DEV_SETUP(r0, 0x405c5503, &(0x7f0000000280)={{}, 'syz0\x00', 0x45}) ioctl$UI_SET_FFBIT(r0, 0x4004556b, 0x51) r1 = syz_open_dev$evdev(&(0x7f00000000c0), 0x40, 0x0) ioctl$EVIOCSFF(r1, 0x40304580, &(0x7f0000000180)={0x50, 0xffff, 0x2, {0x0, 0x40}, {0x1, 0x7}, @ramp}) program did not crash testing program (duration=40.980969799s, {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, &(0x7f0000000600), 0x0, 0x0) ioctl$UI_DEV_SETUP(r0, 0x405c5503, &(0x7f0000000280)={{}, 'syz0\x00', 0x45}) ioctl$UI_DEV_CREATE(r0, 0x5501) r1 = syz_open_dev$evdev(&(0x7f00000000c0), 0x40, 0x0) ioctl$EVIOCSFF(r1, 0x40304580, &(0x7f0000000180)={0x50, 0xffff, 0x2, {0x0, 0x40}, {0x1, 0x7}, @ramp}) program did not crash testing program (duration=40.980969799s, {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, &(0x7f0000000600), 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, &(0x7f0000000180)={0x50, 0xffff, 0x2, {0x0, 0x40}, {0x1, 0x7}, @ramp}) program did not crash testing program (duration=40.980969799s, {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, &(0x7f0000000280)={{}, 'syz0\x00', 0x45}) 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, &(0x7f0000000180)={0x50, 0xffff, 0x2, {0x0, 0x40}, {0x1, 0x7}, @ramp}) program did not crash testing program (duration=40.980969799s, {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, &(0x7f0000000280)={{}, 'syz0\x00', 0x45}) 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, &(0x7f0000000180)={0x50, 0xffff, 0x2, {0x0, 0x40}, {0x1, 0x7}, @ramp}) program did not crash testing program (duration=40.980969799s, {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$uinput(0xffffffffffffff9c, &(0x7f0000000600), 0x0, 0x0) ioctl$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, &(0x7f0000000180)={0x50, 0xffff, 0x2, {0x0, 0x40}, {0x1, 0x7}, @ramp}) program did not crash testing program (duration=40.980969799s, {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$uinput(0xffffffffffffff9c, &(0x7f0000000600), 0x0, 0x0) ioctl$UI_DEV_SETUP(r0, 0x405c5503, &(0x7f0000000280)={{}, 'syz0\x00', 0x45}) 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, &(0x7f0000000180)={0x50, 0xffff, 0x2, {0x0, 0x40}, {0x1, 0x7}, @ramp}) program did not crash testing program (duration=40.980969799s, {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$uinput(0xffffffffffffff9c, &(0x7f0000000600), 0x0, 0x0) ioctl$UI_DEV_SETUP(r0, 0x405c5503, &(0x7f0000000280)={{}, 'syz0\x00', 0x45}) 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=40.980969799s, {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=40.980969799s, {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$uinput(0xffffffffffffff9c, &(0x7f0000000600), 0x0, 0x0) ioctl$UI_DEV_SETUP(r0, 0x405c5503, &(0x7f0000000280)={{}, 'syz0\x00', 0x45}) 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, &(0x7f0000000180)={0x50, 0xffff, 0x2, {0x0, 0x40}, {0x1, 0x7}, @ramp}) program crashed: possible deadlock in uinput_request_submit a never seen crash title: possible deadlock in uinput_request_submit, ignore testing program (duration=40.980969799s, {Threaded:true 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$uinput(0xffffffffffffff9c, &(0x7f0000000600), 0x0, 0x0) ioctl$UI_DEV_SETUP(r0, 0x405c5503, &(0x7f0000000280)={{}, 'syz0\x00', 0x45}) 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, &(0x7f0000000180)={0x50, 0xffff, 0x2, {0x0, 0x40}, {0x1, 0x7}, @ramp}) program crashed: possible deadlock in uinput_request_submit a never seen crash title: possible deadlock in uinput_request_submit, ignore testing program (duration=40.980969799s, {Threaded:true 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$uinput(0xffffffffffffff9c, &(0x7f0000000600), 0x0, 0x0) ioctl$UI_DEV_SETUP(r0, 0x405c5503, &(0x7f0000000280)={{}, 'syz0\x00', 0x45}) 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, &(0x7f0000000180)={0x50, 0xffff, 0x2, {0x0, 0x40}, {0x1, 0x7}, @ramp}) program crashed: possible deadlock in uinput_request_submit a never seen crash title: possible deadlock in uinput_request_submit, ignore reproducing took 11m10.836941084s repro crashed as (corrupted=false): ====================================================== WARNING: possible circular locking dependency detected 6.15.0-rc4-syzkaller-00256-g95d3481af6dc #0 Not tainted ------------------------------------------------------ acpid/5328 is trying to acquire lock: ffff8880324cc8b0 (&ff->mutex){+.+.}-{4:4}, at: class_mutex_constructor include/linux/mutex.h:201 [inline] ffff8880324cc8b0 (&ff->mutex){+.+.}-{4:4}, at: input_ff_flush+0x63/0x180 drivers/input/ff-core.c:231 but task is already holding lock: ffff88804fb482c0 (&dev->mutex#2){+.+.}-{4:4}, at: class_mutex_intr_constructor include/linux/mutex.h:203 [inline] ffff88804fb482c0 (&dev->mutex#2){+.+.}-{4:4}, at: input_flush_device+0x55/0x110 drivers/input/input.c:625 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:601 [inline] __mutex_lock+0x199/0xb90 kernel/locking/mutex.c:746 class_mutex_intr_constructor include/linux/mutex.h:203 [inline] input_register_handle+0xdc/0x620 drivers/input/input.c:2653 kbd_connect+0xca/0x160 drivers/tty/vt/keyboard.c:1587 input_attach_handler.isra.0+0x181/0x260 drivers/input/input.c:993 input_register_device+0xa84/0x1130 drivers/input/input.c:2412 acpi_button_add+0x582/0xb70 drivers/acpi/button.c:621 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:657 __driver_probe_device+0x1de/0x440 drivers/base/dd.c:799 driver_probe_device+0x4c/0x1b0 drivers/base/dd.c:829 __driver_attach+0x283/0x580 drivers/base/dd.c:1215 bus_for_each_dev+0x13b/0x1d0 drivers/base/bus.c:370 bus_add_driver+0x2e9/0x690 drivers/base/bus.c:678 driver_register+0x15c/0x4b0 drivers/base/driver.c:249 __acpi_bus_register_driver+0xdf/0x130 drivers/acpi/bus.c:1027 acpi_button_register_driver drivers/acpi/button.c:751 [inline] acpi_button_driver_init+0x82/0x110 drivers/acpi/button.c:760 do_one_initcall+0x120/0x6e0 init/main.c:1257 do_initcall_level init/main.c:1319 [inline] do_initcalls init/main.c:1335 [inline] do_basic_setup init/main.c:1354 [inline] kernel_init_freeable+0x5c2/0x900 init/main.c:1567 kernel_init+0x1c/0x2b0 init/main.c:1457 ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:153 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245 -> #2 (input_mutex){+.+.}-{4:4}: __mutex_lock_common kernel/locking/mutex.c:601 [inline] __mutex_lock+0x199/0xb90 kernel/locking/mutex.c:746 class_mutex_intr_constructor include/linux/mutex.h:203 [inline] input_register_device+0x98a/0x1130 drivers/input/input.c:2408 uinput_create_device drivers/input/misc/uinput.c:365 [inline] uinput_ioctl_handler.isra.0+0x1357/0x1df0 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/syscall_64.c:63 [inline] do_syscall_64+0xcd/0x260 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f -> #1 (&newdev->mutex){+.+.}-{4:4}: __mutex_lock_common kernel/locking/mutex.c:601 [inline] __mutex_lock+0x199/0xb90 kernel/locking/mutex.c:746 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+0x174/0x1f0 drivers/input/misc/uinput.c:257 input_ff_upload+0x568/0xc10 drivers/input/ff-core.c:148 evdev_do_ioctl+0xf40/0x1b30 drivers/input/evdev.c:1181 evdev_ioctl_handler drivers/input/evdev.c:1270 [inline] evdev_ioctl+0x16f/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/syscall_64.c:63 [inline] do_syscall_64+0xcd/0x260 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f -> #0 (&ff->mutex){+.+.}-{4:4}: check_prev_add kernel/locking/lockdep.c:3166 [inline] check_prevs_add kernel/locking/lockdep.c:3285 [inline] validate_chain kernel/locking/lockdep.c:3909 [inline] __lock_acquire+0x1173/0x1ba0 kernel/locking/lockdep.c:5235 lock_acquire kernel/locking/lockdep.c:5866 [inline] lock_acquire+0x179/0x350 kernel/locking/lockdep.c:5823 __mutex_lock_common kernel/locking/mutex.c:601 [inline] __mutex_lock+0x199/0xb90 kernel/locking/mutex.c:746 class_mutex_constructor include/linux/mutex.h:201 [inline] input_ff_flush+0x63/0x180 drivers/input/ff-core.c:231 uinput_dev_flush+0x2a/0x40 drivers/input/misc/uinput.c:283 input_flush_device+0xa1/0x110 drivers/input/input.c:627 evdev_release+0x344/0x420 drivers/input/evdev.c:435 __fput+0x3ff/0xb70 fs/file_table.c:465 fput_close_sync+0x118/0x260 fs/file_table.c:570 __do_sys_close fs/open.c:1581 [inline] __se_sys_close fs/open.c:1566 [inline] __x64_sys_close+0x8b/0x120 fs/open.c:1566 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xcd/0x260 arch/x86/entry/syscall_64.c:94 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 acpid/5328: #0: ffff88804fb6a118 (&evdev->mutex){+.+.}-{4:4}, at: evdev_release+0x79/0x420 drivers/input/evdev.c:432 #1: ffff88804fb482c0 (&dev->mutex#2){+.+.}-{4:4}, at: class_mutex_intr_constructor include/linux/mutex.h:203 [inline] #1: ffff88804fb482c0 (&dev->mutex#2){+.+.}-{4:4}, at: input_flush_device+0x55/0x110 drivers/input/input.c:625 stack backtrace: CPU: 1 UID: 0 PID: 5328 Comm: acpid Not tainted 6.15.0-rc4-syzkaller-00256-g95d3481af6dc #0 PREEMPT(full) 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+0x275/0x350 kernel/locking/lockdep.c:2079 check_noncircular+0x14c/0x170 kernel/locking/lockdep.c:2211 check_prev_add kernel/locking/lockdep.c:3166 [inline] check_prevs_add kernel/locking/lockdep.c:3285 [inline] validate_chain kernel/locking/lockdep.c:3909 [inline] __lock_acquire+0x1173/0x1ba0 kernel/locking/lockdep.c:5235 lock_acquire kernel/locking/lockdep.c:5866 [inline] lock_acquire+0x179/0x350 kernel/locking/lockdep.c:5823 __mutex_lock_common kernel/locking/mutex.c:601 [inline] __mutex_lock+0x199/0xb90 kernel/locking/mutex.c:746 class_mutex_constructor include/linux/mutex.h:201 [inline] input_ff_flush+0x63/0x180 drivers/input/ff-core.c:231 uinput_dev_flush+0x2a/0x40 drivers/input/misc/uinput.c:283 input_flush_device+0xa1/0x110 drivers/input/input.c:627 evdev_release+0x344/0x420 drivers/input/evdev.c:435 __fput+0x3ff/0xb70 fs/file_table.c:465 fput_close_sync+0x118/0x260 fs/file_table.c:570 __do_sys_close fs/open.c:1581 [inline] __se_sys_close fs/open.c:1566 [inline] __x64_sys_close+0x8b/0x120 fs/open.c:1566 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xcd/0x260 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fe8c63e80a8 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:00007ffd44928cf8 EFLAGS: 00000246 ORIG_RAX: 0000000000000003 RAX: ffffffffffffffda RBX: 00007ffd44928f68 RCX: 00007fe8c63e80a8 RDX: 0000000000000000 RSI: 000000000000001e RDI: 0000000000000009 RBP: 0000000000000009 R08: 0000000000000010 R09: 00007ffd44928e68 R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffd44928e68 R13: 0000000000000020 R14: 00007ffd44928f68 R15: 00007ffd44928e68 final repro crashed as (corrupted=false): ====================================================== WARNING: possible circular locking dependency detected 6.15.0-rc4-syzkaller-00256-g95d3481af6dc #0 Not tainted ------------------------------------------------------ acpid/5328 is trying to acquire lock: ffff8880324cc8b0 (&ff->mutex){+.+.}-{4:4}, at: class_mutex_constructor include/linux/mutex.h:201 [inline] ffff8880324cc8b0 (&ff->mutex){+.+.}-{4:4}, at: input_ff_flush+0x63/0x180 drivers/input/ff-core.c:231 but task is already holding lock: ffff88804fb482c0 (&dev->mutex#2){+.+.}-{4:4}, at: class_mutex_intr_constructor include/linux/mutex.h:203 [inline] ffff88804fb482c0 (&dev->mutex#2){+.+.}-{4:4}, at: input_flush_device+0x55/0x110 drivers/input/input.c:625 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:601 [inline] __mutex_lock+0x199/0xb90 kernel/locking/mutex.c:746 class_mutex_intr_constructor include/linux/mutex.h:203 [inline] input_register_handle+0xdc/0x620 drivers/input/input.c:2653 kbd_connect+0xca/0x160 drivers/tty/vt/keyboard.c:1587 input_attach_handler.isra.0+0x181/0x260 drivers/input/input.c:993 input_register_device+0xa84/0x1130 drivers/input/input.c:2412 acpi_button_add+0x582/0xb70 drivers/acpi/button.c:621 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:657 __driver_probe_device+0x1de/0x440 drivers/base/dd.c:799 driver_probe_device+0x4c/0x1b0 drivers/base/dd.c:829 __driver_attach+0x283/0x580 drivers/base/dd.c:1215 bus_for_each_dev+0x13b/0x1d0 drivers/base/bus.c:370 bus_add_driver+0x2e9/0x690 drivers/base/bus.c:678 driver_register+0x15c/0x4b0 drivers/base/driver.c:249 __acpi_bus_register_driver+0xdf/0x130 drivers/acpi/bus.c:1027 acpi_button_register_driver drivers/acpi/button.c:751 [inline] acpi_button_driver_init+0x82/0x110 drivers/acpi/button.c:760 do_one_initcall+0x120/0x6e0 init/main.c:1257 do_initcall_level init/main.c:1319 [inline] do_initcalls init/main.c:1335 [inline] do_basic_setup init/main.c:1354 [inline] kernel_init_freeable+0x5c2/0x900 init/main.c:1567 kernel_init+0x1c/0x2b0 init/main.c:1457 ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:153 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245 -> #2 (input_mutex){+.+.}-{4:4}: __mutex_lock_common kernel/locking/mutex.c:601 [inline] __mutex_lock+0x199/0xb90 kernel/locking/mutex.c:746 class_mutex_intr_constructor include/linux/mutex.h:203 [inline] input_register_device+0x98a/0x1130 drivers/input/input.c:2408 uinput_create_device drivers/input/misc/uinput.c:365 [inline] uinput_ioctl_handler.isra.0+0x1357/0x1df0 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/syscall_64.c:63 [inline] do_syscall_64+0xcd/0x260 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f -> #1 (&newdev->mutex){+.+.}-{4:4}: __mutex_lock_common kernel/locking/mutex.c:601 [inline] __mutex_lock+0x199/0xb90 kernel/locking/mutex.c:746 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+0x174/0x1f0 drivers/input/misc/uinput.c:257 input_ff_upload+0x568/0xc10 drivers/input/ff-core.c:148 evdev_do_ioctl+0xf40/0x1b30 drivers/input/evdev.c:1181 evdev_ioctl_handler drivers/input/evdev.c:1270 [inline] evdev_ioctl+0x16f/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/syscall_64.c:63 [inline] do_syscall_64+0xcd/0x260 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f -> #0 (&ff->mutex){+.+.}-{4:4}: check_prev_add kernel/locking/lockdep.c:3166 [inline] check_prevs_add kernel/locking/lockdep.c:3285 [inline] validate_chain kernel/locking/lockdep.c:3909 [inline] __lock_acquire+0x1173/0x1ba0 kernel/locking/lockdep.c:5235 lock_acquire kernel/locking/lockdep.c:5866 [inline] lock_acquire+0x179/0x350 kernel/locking/lockdep.c:5823 __mutex_lock_common kernel/locking/mutex.c:601 [inline] __mutex_lock+0x199/0xb90 kernel/locking/mutex.c:746 class_mutex_constructor include/linux/mutex.h:201 [inline] input_ff_flush+0x63/0x180 drivers/input/ff-core.c:231 uinput_dev_flush+0x2a/0x40 drivers/input/misc/uinput.c:283 input_flush_device+0xa1/0x110 drivers/input/input.c:627 evdev_release+0x344/0x420 drivers/input/evdev.c:435 __fput+0x3ff/0xb70 fs/file_table.c:465 fput_close_sync+0x118/0x260 fs/file_table.c:570 __do_sys_close fs/open.c:1581 [inline] __se_sys_close fs/open.c:1566 [inline] __x64_sys_close+0x8b/0x120 fs/open.c:1566 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xcd/0x260 arch/x86/entry/syscall_64.c:94 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 acpid/5328: #0: ffff88804fb6a118 (&evdev->mutex){+.+.}-{4:4}, at: evdev_release+0x79/0x420 drivers/input/evdev.c:432 #1: ffff88804fb482c0 (&dev->mutex#2){+.+.}-{4:4}, at: class_mutex_intr_constructor include/linux/mutex.h:203 [inline] #1: ffff88804fb482c0 (&dev->mutex#2){+.+.}-{4:4}, at: input_flush_device+0x55/0x110 drivers/input/input.c:625 stack backtrace: CPU: 1 UID: 0 PID: 5328 Comm: acpid Not tainted 6.15.0-rc4-syzkaller-00256-g95d3481af6dc #0 PREEMPT(full) 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+0x275/0x350 kernel/locking/lockdep.c:2079 check_noncircular+0x14c/0x170 kernel/locking/lockdep.c:2211 check_prev_add kernel/locking/lockdep.c:3166 [inline] check_prevs_add kernel/locking/lockdep.c:3285 [inline] validate_chain kernel/locking/lockdep.c:3909 [inline] __lock_acquire+0x1173/0x1ba0 kernel/locking/lockdep.c:5235 lock_acquire kernel/locking/lockdep.c:5866 [inline] lock_acquire+0x179/0x350 kernel/locking/lockdep.c:5823 __mutex_lock_common kernel/locking/mutex.c:601 [inline] __mutex_lock+0x199/0xb90 kernel/locking/mutex.c:746 class_mutex_constructor include/linux/mutex.h:201 [inline] input_ff_flush+0x63/0x180 drivers/input/ff-core.c:231 uinput_dev_flush+0x2a/0x40 drivers/input/misc/uinput.c:283 input_flush_device+0xa1/0x110 drivers/input/input.c:627 evdev_release+0x344/0x420 drivers/input/evdev.c:435 __fput+0x3ff/0xb70 fs/file_table.c:465 fput_close_sync+0x118/0x260 fs/file_table.c:570 __do_sys_close fs/open.c:1581 [inline] __se_sys_close fs/open.c:1566 [inline] __x64_sys_close+0x8b/0x120 fs/open.c:1566 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xcd/0x260 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fe8c63e80a8 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:00007ffd44928cf8 EFLAGS: 00000246 ORIG_RAX: 0000000000000003 RAX: ffffffffffffffda RBX: 00007ffd44928f68 RCX: 00007fe8c63e80a8 RDX: 0000000000000000 RSI: 000000000000001e RDI: 0000000000000009 RBP: 0000000000000009 R08: 0000000000000010 R09: 00007ffd44928e68 R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffd44928e68 R13: 0000000000000020 R14: 00007ffd44928f68 R15: 00007ffd44928e68