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Message-ID: <0000000000006d6f4105d2fe05ed@google.com>
Date: Sun, 12 Dec 2021 18:42:18 -0800
From: syzbot <syzbot+d4c06e848a1c1f9f726f@...kaller.appspotmail.com>
To: bfields@...ldses.org, jlayton@...nel.org,
linux-fsdevel@...r.kernel.org, linux-kernel@...r.kernel.org,
syzkaller-bugs@...glegroups.com, viro@...iv.linux.org.uk
Subject: Re: [syzbot] possible deadlock in input_event (2)
syzbot has found a reproducer for the following issue on:
HEAD commit: 90d9fbc16b69 Merge tag 'usb-5.16-rc5' of git://git.kernel...
git tree: upstream
console output: https://syzkaller.appspot.com/x/log.txt?x=15996741b00000
kernel config: https://syzkaller.appspot.com/x/.config?x=221ffc09e39ebbd1
dashboard link: https://syzkaller.appspot.com/bug?extid=d4c06e848a1c1f9f726f
compiler: gcc (Debian 10.2.1-6) 10.2.1 20210110, GNU ld (GNU Binutils for Debian) 2.35.2
syz repro: https://syzkaller.appspot.com/x/repro.syz?x=108f4d4db00000
C reproducer: https://syzkaller.appspot.com/x/repro.c?x=17a0f551b00000
IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+d4c06e848a1c1f9f726f@...kaller.appspotmail.com
=====================================================
WARNING: HARDIRQ-safe -> HARDIRQ-unsafe lock order detected
5.16.0-rc4-syzkaller #0 Not tainted
-----------------------------------------------------
syz-executor835/3750 [HC0[0]:SC0[0]:HE0:SE1] is trying to acquire:
ffffffff8b80a098 (tasklist_lock){.+.+}-{2:2}, at: send_sigio+0xab/0x380 fs/fcntl.c:810
and this task is already holding:
ffff88801c0172b8 (&f->f_owner.lock){....}-{2:2}, at: send_sigio+0x24/0x380 fs/fcntl.c:796
which would create a new lock dependency:
(&f->f_owner.lock){....}-{2:2} -> (tasklist_lock){.+.+}-{2:2}
but this new dependency connects a HARDIRQ-irq-safe lock:
(&dev->event_lock){-...}-{2:2}
... which became HARDIRQ-irq-safe at:
lock_acquire kernel/locking/lockdep.c:5637 [inline]
lock_acquire+0x1ab/0x510 kernel/locking/lockdep.c:5602
__raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline]
_raw_spin_lock_irqsave+0x39/0x50 kernel/locking/spinlock.c:162
input_event drivers/input/input.c:445 [inline]
input_event+0x7b/0xb0 drivers/input/input.c:438
input_report_key include/linux/input.h:425 [inline]
psmouse_report_standard_buttons+0x2c/0x80 drivers/input/mouse/psmouse-base.c:123
psmouse_report_standard_packet drivers/input/mouse/psmouse-base.c:141 [inline]
psmouse_process_byte+0x1e1/0x890 drivers/input/mouse/psmouse-base.c:232
psmouse_handle_byte+0x41/0x1b0 drivers/input/mouse/psmouse-base.c:274
psmouse_interrupt+0x304/0xf00 drivers/input/mouse/psmouse-base.c:426
serio_interrupt+0x88/0x150 drivers/input/serio/serio.c:1001
i8042_interrupt+0x27a/0x520 drivers/input/serio/i8042.c:602
__handle_irq_event_percpu+0x303/0x8f0 kernel/irq/handle.c:158
handle_irq_event_percpu kernel/irq/handle.c:198 [inline]
handle_irq_event+0x102/0x280 kernel/irq/handle.c:215
handle_edge_irq+0x25f/0xd00 kernel/irq/chip.c:822
generic_handle_irq_desc include/linux/irqdesc.h:158 [inline]
handle_irq arch/x86/kernel/irq.c:231 [inline]
__common_interrupt+0x9d/0x210 arch/x86/kernel/irq.c:250
common_interrupt+0xa4/0xc0 arch/x86/kernel/irq.c:240
asm_common_interrupt+0x1e/0x40 arch/x86/include/asm/idtentry.h:629
__raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:152 [inline]
_raw_spin_unlock_irqrestore+0x38/0x70 kernel/locking/spinlock.c:194
spin_unlock_irqrestore include/linux/spinlock.h:404 [inline]
i8042_command+0x12e/0x150 drivers/input/serio/i8042.c:352
i8042_aux_write+0xd7/0x120 drivers/input/serio/i8042.c:387
serio_write include/linux/serio.h:125 [inline]
ps2_do_sendbyte+0x2cd/0x710 drivers/input/serio/libps2.c:40
ps2_sendbyte+0x58/0x150 drivers/input/serio/libps2.c:92
cypress_ps2_sendbyte+0x2e/0x160 drivers/input/mouse/cypress_ps2.c:42
cypress_ps2_read_cmd_status drivers/input/mouse/cypress_ps2.c:116 [inline]
cypress_send_ext_cmd+0x1d0/0x8e0 drivers/input/mouse/cypress_ps2.c:189
cypress_detect+0x75/0x190 drivers/input/mouse/cypress_ps2.c:205
psmouse_do_detect drivers/input/mouse/psmouse-base.c:1009 [inline]
psmouse_try_protocol+0x211/0x370 drivers/input/mouse/psmouse-base.c:1023
psmouse_extensions+0x557/0x930 drivers/input/mouse/psmouse-base.c:1146
psmouse_switch_protocol+0x52a/0x740 drivers/input/mouse/psmouse-base.c:1542
psmouse_connect+0x5e9/0xfb0 drivers/input/mouse/psmouse-base.c:1632
serio_connect_driver drivers/input/serio/serio.c:47 [inline]
serio_driver_probe+0x72/0xa0 drivers/input/serio/serio.c:778
call_driver_probe drivers/base/dd.c:517 [inline]
really_probe+0x245/0xcc0 drivers/base/dd.c:596
__driver_probe_device+0x338/0x4d0 drivers/base/dd.c:751
driver_probe_device+0x4c/0x1a0 drivers/base/dd.c:781
__driver_attach+0x22d/0x4e0 drivers/base/dd.c:1140
bus_for_each_dev+0x147/0x1d0 drivers/base/bus.c:301
serio_attach_driver drivers/input/serio/serio.c:807 [inline]
serio_handle_event+0x5f6/0xa30 drivers/input/serio/serio.c:227
process_one_work+0x9b2/0x1690 kernel/workqueue.c:2298
worker_thread+0x658/0x11f0 kernel/workqueue.c:2445
kthread+0x405/0x4f0 kernel/kthread.c:327
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295
to a HARDIRQ-irq-unsafe lock:
(tasklist_lock){.+.+}-{2:2}
... which became HARDIRQ-irq-unsafe at:
...
lock_acquire kernel/locking/lockdep.c:5637 [inline]
lock_acquire+0x1ab/0x510 kernel/locking/lockdep.c:5602
__raw_read_lock include/linux/rwlock_api_smp.h:149 [inline]
_raw_read_lock+0x5b/0x70 kernel/locking/spinlock.c:228
do_wait+0x284/0xce0 kernel/exit.c:1511
kernel_wait+0x9c/0x150 kernel/exit.c:1701
call_usermodehelper_exec_sync kernel/umh.c:139 [inline]
call_usermodehelper_exec_work+0xf5/0x180 kernel/umh.c:166
process_one_work+0x9b2/0x1690 kernel/workqueue.c:2298
worker_thread+0x658/0x11f0 kernel/workqueue.c:2445
kthread+0x405/0x4f0 kernel/kthread.c:327
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295
other info that might help us debug this:
Chain exists of:
&dev->event_lock --> &f->f_owner.lock --> tasklist_lock
Possible interrupt unsafe locking scenario:
CPU0 CPU1
---- ----
lock(tasklist_lock);
local_irq_disable();
lock(&dev->event_lock);
lock(&f->f_owner.lock);
<Interrupt>
lock(&dev->event_lock);
*** DEADLOCK ***
9 locks held by syz-executor835/3750:
#0: ffff88801df50110 (&evdev->mutex){+.+.}-{3:3}, at: evdev_write+0x1d3/0x760 drivers/input/evdev.c:513
#1: ffff8881468e8230 (&dev->event_lock){-...}-{2:2}, at: input_inject_event+0xa6/0x320 drivers/input/input.c:471
#2: ffffffff8bb83e60 (rcu_read_lock){....}-{1:2}, at: is_event_supported drivers/input/input.c:53 [inline]
#2: ffffffff8bb83e60 (rcu_read_lock){....}-{1:2}, at: is_event_supported drivers/input/input.c:50 [inline]
#2: ffffffff8bb83e60 (rcu_read_lock){....}-{1:2}, at: input_inject_event+0x92/0x320 drivers/input/input.c:470
#3: ffffffff8bb83e60 (rcu_read_lock){....}-{1:2}, at: input_dev_toggle drivers/input/input.c:1712 [inline]
#3: ffffffff8bb83e60 (rcu_read_lock){....}-{1:2}, at: input_pass_values.part.0+0x0/0x710 drivers/input/input.c:1832
#4: ffffffff8bb83e60 (rcu_read_lock){....}-{1:2}, at: evdev_events+0x59/0x3e0 drivers/input/evdev.c:296
#5: ffff8880741ae028 (&client->buffer_lock){....}-{2:2}, at: spin_lock include/linux/spinlock.h:349 [inline]
#5: ffff8880741ae028 (&client->buffer_lock){....}-{2:2}, at: evdev_pass_values.part.0+0xf6/0x970 drivers/input/evdev.c:261
#6: ffffffff8bb83e60 (rcu_read_lock){....}-{1:2}, at: kill_fasync+0x41/0x470 fs/fcntl.c:1033
#7: ffff88801c739be8 (&new->fa_lock){....}-{2:2}, at: kill_fasync_rcu fs/fcntl.c:1014 [inline]
#7: ffff88801c739be8 (&new->fa_lock){....}-{2:2}, at: kill_fasync fs/fcntl.c:1035 [inline]
#7: ffff88801c739be8 (&new->fa_lock){....}-{2:2}, at: kill_fasync+0x136/0x470 fs/fcntl.c:1028
#8: ffff88801c0172b8 (&f->f_owner.lock){....}-{2:2}, at: send_sigio+0x24/0x380 fs/fcntl.c:796
the dependencies between HARDIRQ-irq-safe lock and the holding lock:
-> (&dev->event_lock){-...}-{2:2} {
IN-HARDIRQ-W at:
lock_acquire kernel/locking/lockdep.c:5637 [inline]
lock_acquire+0x1ab/0x510 kernel/locking/lockdep.c:5602
__raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline]
_raw_spin_lock_irqsave+0x39/0x50 kernel/locking/spinlock.c:162
input_event drivers/input/input.c:445 [inline]
input_event+0x7b/0xb0 drivers/input/input.c:438
input_report_key include/linux/input.h:425 [inline]
psmouse_report_standard_buttons+0x2c/0x80 drivers/input/mouse/psmouse-base.c:123
psmouse_report_standard_packet drivers/input/mouse/psmouse-base.c:141 [inline]
psmouse_process_byte+0x1e1/0x890 drivers/input/mouse/psmouse-base.c:232
psmouse_handle_byte+0x41/0x1b0 drivers/input/mouse/psmouse-base.c:274
psmouse_interrupt+0x304/0xf00 drivers/input/mouse/psmouse-base.c:426
serio_interrupt+0x88/0x150 drivers/input/serio/serio.c:1001
i8042_interrupt+0x27a/0x520 drivers/input/serio/i8042.c:602
__handle_irq_event_percpu+0x303/0x8f0 kernel/irq/handle.c:158
handle_irq_event_percpu kernel/irq/handle.c:198 [inline]
handle_irq_event+0x102/0x280 kernel/irq/handle.c:215
handle_edge_irq+0x25f/0xd00 kernel/irq/chip.c:822
generic_handle_irq_desc include/linux/irqdesc.h:158 [inline]
handle_irq arch/x86/kernel/irq.c:231 [inline]
__common_interrupt+0x9d/0x210 arch/x86/kernel/irq.c:250
common_interrupt+0xa4/0xc0 arch/x86/kernel/irq.c:240
asm_common_interrupt+0x1e/0x40 arch/x86/include/asm/idtentry.h:629
__raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:152 [inline]
_raw_spin_unlock_irqrestore+0x38/0x70 kernel/locking/spinlock.c:194
spin_unlock_irqrestore include/linux/spinlock.h:404 [inline]
i8042_command+0x12e/0x150 drivers/input/serio/i8042.c:352
i8042_aux_write+0xd7/0x120 drivers/input/serio/i8042.c:387
serio_write include/linux/serio.h:125 [inline]
ps2_do_sendbyte+0x2cd/0x710 drivers/input/serio/libps2.c:40
ps2_sendbyte+0x58/0x150 drivers/input/serio/libps2.c:92
cypress_ps2_sendbyte+0x2e/0x160 drivers/input/mouse/cypress_ps2.c:42
cypress_ps2_read_cmd_status drivers/input/mouse/cypress_ps2.c:116 [inline]
cypress_send_ext_cmd+0x1d0/0x8e0 drivers/input/mouse/cypress_ps2.c:189
cypress_detect+0x75/0x190 drivers/input/mouse/cypress_ps2.c:205
psmouse_do_detect drivers/input/mouse/psmouse-base.c:1009 [inline]
psmouse_try_protocol+0x211/0x370 drivers/input/mouse/psmouse-base.c:1023
psmouse_extensions+0x557/0x930 drivers/input/mouse/psmouse-base.c:1146
psmouse_switch_protocol+0x52a/0x740 drivers/input/mouse/psmouse-base.c:1542
psmouse_connect+0x5e9/0xfb0 drivers/input/mouse/psmouse-base.c:1632
serio_connect_driver drivers/input/serio/serio.c:47 [inline]
serio_driver_probe+0x72/0xa0 drivers/input/serio/serio.c:778
call_driver_probe drivers/base/dd.c:517 [inline]
really_probe+0x245/0xcc0 drivers/base/dd.c:596
__driver_probe_device+0x338/0x4d0 drivers/base/dd.c:751
driver_probe_device+0x4c/0x1a0 drivers/base/dd.c:781
__driver_attach+0x22d/0x4e0 drivers/base/dd.c:1140
bus_for_each_dev+0x147/0x1d0 drivers/base/bus.c:301
serio_attach_driver drivers/input/serio/serio.c:807 [inline]
serio_handle_event+0x5f6/0xa30 drivers/input/serio/serio.c:227
process_one_work+0x9b2/0x1690 kernel/workqueue.c:2298
worker_thread+0x658/0x11f0 kernel/workqueue.c:2445
kthread+0x405/0x4f0 kernel/kthread.c:327
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295
INITIAL USE at:
lock_acquire kernel/locking/lockdep.c:5637 [inline]
lock_acquire+0x1ab/0x510 kernel/locking/lockdep.c:5602
__raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline]
_raw_spin_lock_irqsave+0x39/0x50 kernel/locking/spinlock.c:162
input_inject_event+0xa6/0x320 drivers/input/input.c:471
__led_set_brightness drivers/leds/led-core.c:47 [inline]
led_set_brightness_nopm drivers/leds/led-core.c:271 [inline]
led_set_brightness_nosleep+0xe6/0x1a0 drivers/leds/led-core.c:287
led_set_brightness+0x134/0x170 drivers/leds/led-core.c:264
led_trigger_event drivers/leds/led-triggers.c:390 [inline]
led_trigger_event+0xb0/0x200 drivers/leds/led-triggers.c:380
kbd_led_trigger_activate+0xc9/0x100 drivers/tty/vt/keyboard.c:1029
led_trigger_set+0x5d7/0xaf0 drivers/leds/led-triggers.c:197
led_trigger_set_default drivers/leds/led-triggers.c:262 [inline]
led_trigger_set_default+0x1a6/0x230 drivers/leds/led-triggers.c:249
led_classdev_register_ext+0x622/0x850 drivers/leds/led-class.c:417
led_classdev_register include/linux/leds.h:196 [inline]
input_leds_connect+0x4bd/0x860 drivers/input/input-leds.c:139
input_attach_handler+0x180/0x1f0 drivers/input/input.c:1035
input_register_device.cold+0xf0/0x304 drivers/input/input.c:2335
atkbd_connect+0x749/0xa10 drivers/input/keyboard/atkbd.c:1293
serio_connect_driver drivers/input/serio/serio.c:47 [inline]
serio_driver_probe+0x72/0xa0 drivers/input/serio/serio.c:778
call_driver_probe drivers/base/dd.c:517 [inline]
really_probe+0x245/0xcc0 drivers/base/dd.c:596
__driver_probe_device+0x338/0x4d0 drivers/base/dd.c:751
driver_probe_device+0x4c/0x1a0 drivers/base/dd.c:781
__driver_attach+0x22d/0x4e0 drivers/base/dd.c:1140
bus_for_each_dev+0x147/0x1d0 drivers/base/bus.c:301
serio_attach_driver drivers/input/serio/serio.c:807 [inline]
serio_handle_event+0x5f6/0xa30 drivers/input/serio/serio.c:227
process_one_work+0x9b2/0x1690 kernel/workqueue.c:2298
worker_thread+0x658/0x11f0 kernel/workqueue.c:2445
kthread+0x405/0x4f0 kernel/kthread.c:327
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295
}
... key at: [<ffffffff907da6e0>] __key.8+0x0/0x40
-> (&client->buffer_lock){....}-{2:2} {
INITIAL USE at:
lock_acquire kernel/locking/lockdep.c:5637 [inline]
lock_acquire+0x1ab/0x510 kernel/locking/lockdep.c:5602
__raw_spin_lock include/linux/spinlock_api_smp.h:133 [inline]
_raw_spin_lock+0x2a/0x40 kernel/locking/spinlock.c:154
spin_lock include/linux/spinlock.h:349 [inline]
evdev_pass_values.part.0+0xf6/0x970 drivers/input/evdev.c:261
evdev_pass_values drivers/input/evdev.c:253 [inline]
evdev_events+0x359/0x3e0 drivers/input/evdev.c:306
input_to_handler+0x2a0/0x4c0 drivers/input/input.c:115
input_pass_values.part.0+0x230/0x710 drivers/input/input.c:145
input_pass_values drivers/input/input.c:134 [inline]
input_handle_event+0x373/0x1440 drivers/input/input.c:404
input_inject_event+0x1bd/0x320 drivers/input/input.c:476
evdev_write+0x430/0x760 drivers/input/evdev.c:530
vfs_write+0x28e/0xae0 fs/read_write.c:588
ksys_write+0x1ee/0x250 fs/read_write.c:643
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x44/0xae
}
... key at: [<ffffffff907dab60>] __key.4+0x0/0x40
... acquired at:
__raw_spin_lock include/linux/spinlock_api_smp.h:133 [inline]
_raw_spin_lock+0x2a/0x40 kernel/locking/spinlock.c:154
spin_lock include/linux/spinlock.h:349 [inline]
evdev_pass_values.part.0+0xf6/0x970 drivers/input/evdev.c:261
evdev_pass_values drivers/input/evdev.c:253 [inline]
evdev_events+0x359/0x3e0 drivers/input/evdev.c:306
input_to_handler+0x2a0/0x4c0 drivers/input/input.c:115
input_pass_values.part.0+0x230/0x710 drivers/input/input.c:145
input_pass_values drivers/input/input.c:134 [inline]
input_handle_event+0x373/0x1440 drivers/input/input.c:404
input_inject_event+0x1bd/0x320 drivers/input/input.c:476
evdev_write+0x430/0x760 drivers/input/evdev.c:530
vfs_write+0x28e/0xae0 fs/read_write.c:588
ksys_write+0x1ee/0x250 fs/read_write.c:643
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x44/0xae
-> (&new->fa_lock){....}-{2:2} {
INITIAL USE at:
lock_acquire kernel/locking/lockdep.c:5637 [inline]
lock_acquire+0x1ab/0x510 kernel/locking/lockdep.c:5602
__raw_write_lock_irq include/linux/rwlock_api_smp.h:194 [inline]
_raw_write_lock_irq+0x32/0x50 kernel/locking/spinlock.c:316
fasync_remove_entry+0xb6/0x1f0 fs/fcntl.c:891
fasync_helper+0x9e/0xb0 fs/fcntl.c:994
__fput+0x846/0x9f0 fs/file_table.c:277
task_work_run+0xdd/0x1a0 kernel/task_work.c:164
exit_task_work include/linux/task_work.h:32 [inline]
do_exit+0xc14/0x2b40 kernel/exit.c:832
do_group_exit+0x125/0x310 kernel/exit.c:929
get_signal+0x47d/0x2220 kernel/signal.c:2852
arch_do_signal_or_restart+0x2a9/0x1c40 arch/x86/kernel/signal.c:868
handle_signal_work kernel/entry/common.c:148 [inline]
exit_to_user_mode_loop kernel/entry/common.c:172 [inline]
exit_to_user_mode_prepare+0x17d/0x290 kernel/entry/common.c:207
__syscall_exit_to_user_mode_work kernel/entry/common.c:289 [inline]
syscall_exit_to_user_mode+0x19/0x60 kernel/entry/common.c:300
do_syscall_64+0x42/0xb0 arch/x86/entry/common.c:86
entry_SYSCALL_64_after_hwframe+0x44/0xae
INITIAL READ USE at:
lock_acquire kernel/locking/lockdep.c:5637 [inline]
lock_acquire+0x1ab/0x510 kernel/locking/lockdep.c:5602
__raw_read_lock_irqsave include/linux/rwlock_api_smp.h:159 [inline]
_raw_read_lock_irqsave+0x70/0x90 kernel/locking/spinlock.c:236
kill_fasync_rcu fs/fcntl.c:1014 [inline]
kill_fasync fs/fcntl.c:1035 [inline]
kill_fasync+0x136/0x470 fs/fcntl.c:1028
__pass_event drivers/input/evdev.c:240 [inline]
evdev_pass_values.part.0+0x64e/0x970 drivers/input/evdev.c:278
evdev_pass_values drivers/input/evdev.c:253 [inline]
evdev_events+0x359/0x3e0 drivers/input/evdev.c:306
input_to_handler+0x2a0/0x4c0 drivers/input/input.c:115
input_pass_values.part.0+0x230/0x710 drivers/input/input.c:145
input_pass_values drivers/input/input.c:134 [inline]
input_handle_event+0x373/0x1440 drivers/input/input.c:404
input_inject_event+0x1bd/0x320 drivers/input/input.c:476
evdev_write+0x430/0x760 drivers/input/evdev.c:530
vfs_write+0x28e/0xae0 fs/read_write.c:588
ksys_write+0x1ee/0x250 fs/read_write.c:643
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x44/0xae
}
... key at: [<ffffffff90535bc0>] __key.0+0x0/0x40
... acquired at:
__raw_read_lock_irqsave include/linux/rwlock_api_smp.h:159 [inline]
_raw_read_lock_irqsave+0x70/0x90 kernel/locking/spinlock.c:236
kill_fasync_rcu fs/fcntl.c:1014 [inline]
kill_fasync fs/fcntl.c:1035 [inline]
kill_fasync+0x136/0x470 fs/fcntl.c:1028
__pass_event drivers/input/evdev.c:240 [inline]
evdev_pass_values.part.0+0x64e/0x970 drivers/input/evdev.c:278
evdev_pass_values drivers/input/evdev.c:253 [inline]
evdev_events+0x359/0x3e0 drivers/input/evdev.c:306
input_to_handler+0x2a0/0x4c0 drivers/input/input.c:115
input_pass_values.part.0+0x230/0x710 drivers/input/input.c:145
input_pass_values drivers/input/input.c:134 [inline]
input_handle_event+0x373/0x1440 drivers/input/input.c:404
input_inject_event+0x1bd/0x320 drivers/input/input.c:476
evdev_write+0x430/0x760 drivers/input/evdev.c:530
vfs_write+0x28e/0xae0 fs/read_write.c:588
ksys_write+0x1ee/0x250 fs/read_write.c:643
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x44/0xae
-> (&f->f_owner.lock){....}-{2:2} {
INITIAL USE at:
lock_acquire kernel/locking/lockdep.c:5637 [inline]
lock_acquire+0x1ab/0x510 kernel/locking/lockdep.c:5602
__raw_write_lock_irq include/linux/rwlock_api_smp.h:194 [inline]
_raw_write_lock_irq+0x32/0x50 kernel/locking/spinlock.c:316
f_modown+0x2a/0x390 fs/fcntl.c:91
__f_setown fs/fcntl.c:110 [inline]
f_setown+0xd7/0x230 fs/fcntl.c:138
do_fcntl+0x749/0x1210 fs/fcntl.c:393
__do_sys_fcntl fs/fcntl.c:472 [inline]
__se_sys_fcntl fs/fcntl.c:457 [inline]
__x64_sys_fcntl+0x165/0x1e0 fs/fcntl.c:457
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x44/0xae
INITIAL READ USE at:
lock_acquire kernel/locking/lockdep.c:5637 [inline]
lock_acquire+0x1ab/0x510 kernel/locking/lockdep.c:5602
__raw_read_lock_irqsave include/linux/rwlock_api_smp.h:159 [inline]
_raw_read_lock_irqsave+0x70/0x90 kernel/locking/spinlock.c:236
send_sigio+0x24/0x380 fs/fcntl.c:796
kill_fasync_rcu fs/fcntl.c:1021 [inline]
kill_fasync fs/fcntl.c:1035 [inline]
kill_fasync+0x1f8/0x470 fs/fcntl.c:1028
__pass_event drivers/input/evdev.c:240 [inline]
evdev_pass_values.part.0+0x64e/0x970 drivers/input/evdev.c:278
evdev_pass_values drivers/input/evdev.c:253 [inline]
evdev_events+0x359/0x3e0 drivers/input/evdev.c:306
input_to_handler+0x2a0/0x4c0 drivers/input/input.c:115
input_pass_values.part.0+0x230/0x710 drivers/input/input.c:145
input_pass_values drivers/input/input.c:134 [inline]
input_handle_event+0x373/0x1440 drivers/input/input.c:404
input_inject_event+0x1bd/0x320 drivers/input/input.c:476
evdev_write+0x430/0x760 drivers/input/evdev.c:530
vfs_write+0x28e/0xae0 fs/read_write.c:588
ksys_write+0x1ee/0x250 fs/read_write.c:643
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x44/0xae
}
... key at: [<ffffffff90534de0>] __key.5+0x0/0x40
... acquired at:
__raw_read_lock_irqsave include/linux/rwlock_api_smp.h:159 [inline]
_raw_read_lock_irqsave+0x70/0x90 kernel/locking/spinlock.c:236
send_sigio+0x24/0x380 fs/fcntl.c:796
kill_fasync_rcu fs/fcntl.c:1021 [inline]
kill_fasync fs/fcntl.c:1035 [inline]
kill_fasync+0x1f8/0x470 fs/fcntl.c:1028
__pass_event drivers/input/evdev.c:240 [inline]
evdev_pass_values.part.0+0x64e/0x970 drivers/input/evdev.c:278
evdev_pass_values drivers/input/evdev.c:253 [inline]
evdev_events+0x359/0x3e0 drivers/input/evdev.c:306
input_to_handler+0x2a0/0x4c0 drivers/input/input.c:115
input_pass_values.part.0+0x230/0x710 drivers/input/input.c:145
input_pass_values drivers/input/input.c:134 [inline]
input_handle_event+0x373/0x1440 drivers/input/input.c:404
input_inject_event+0x1bd/0x320 drivers/input/input.c:476
evdev_write+0x430/0x760 drivers/input/evdev.c:530
vfs_write+0x28e/0xae0 fs/read_write.c:588
ksys_write+0x1ee/0x250 fs/read_write.c:643
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x44/0xae
the dependencies between the lock to be acquired
and HARDIRQ-irq-unsafe lock:
-> (tasklist_lock){.+.+}-{2:2} {
HARDIRQ-ON-R at:
lock_acquire kernel/locking/lockdep.c:5637 [inline]
lock_acquire+0x1ab/0x510 kernel/locking/lockdep.c:5602
__raw_read_lock include/linux/rwlock_api_smp.h:149 [inline]
_raw_read_lock+0x5b/0x70 kernel/locking/spinlock.c:228
do_wait+0x284/0xce0 kernel/exit.c:1511
kernel_wait+0x9c/0x150 kernel/exit.c:1701
call_usermodehelper_exec_sync kernel/umh.c:139 [inline]
call_usermodehelper_exec_work+0xf5/0x180 kernel/umh.c:166
process_one_work+0x9b2/0x1690 kernel/workqueue.c:2298
worker_thread+0x658/0x11f0 kernel/workqueue.c:2445
kthread+0x405/0x4f0 kernel/kthread.c:327
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295
SOFTIRQ-ON-R at:
lock_acquire kernel/locking/lockdep.c:5637 [inline]
lock_acquire+0x1ab/0x510 kernel/locking/lockdep.c:5602
__raw_read_lock include/linux/rwlock_api_smp.h:149 [inline]
_raw_read_lock+0x5b/0x70 kernel/locking/spinlock.c:228
do_wait+0x284/0xce0 kernel/exit.c:1511
kernel_wait+0x9c/0x150 kernel/exit.c:1701
call_usermodehelper_exec_sync kernel/umh.c:139 [inline]
call_usermodehelper_exec_work+0xf5/0x180 kernel/umh.c:166
process_one_work+0x9b2/0x1690 kernel/workqueue.c:2298
worker_thread+0x658/0x11f0 kernel/workqueue.c:2445
kthread+0x405/0x4f0 kernel/kthread.c:327
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295
INITIAL USE at:
lock_acquire kernel/locking/lockdep.c:5637 [inline]
lock_acquire+0x1ab/0x510 kernel/locking/lockdep.c:5602
__raw_write_lock_irq include/linux/rwlock_api_smp.h:194 [inline]
_raw_write_lock_irq+0x32/0x50 kernel/locking/spinlock.c:316
copy_process+0x36c8/0x75a0 kernel/fork.c:2311
kernel_clone+0xe7/0xab0 kernel/fork.c:2582
kernel_thread+0xb5/0xf0 kernel/fork.c:2634
rest_init+0x23/0x3e0 init/main.c:690
start_kernel+0x47a/0x49b init/main.c:1135
secondary_startup_64_no_verify+0xb0/0xbb
INITIAL READ USE at:
lock_acquire kernel/locking/lockdep.c:5637 [inline]
lock_acquire+0x1ab/0x510 kernel/locking/lockdep.c:5602
__raw_read_lock include/linux/rwlock_api_smp.h:149 [inline]
_raw_read_lock+0x5b/0x70 kernel/locking/spinlock.c:228
do_wait+0x284/0xce0 kernel/exit.c:1511
kernel_wait+0x9c/0x150 kernel/exit.c:1701
call_usermodehelper_exec_sync kernel/umh.c:139 [inline]
call_usermodehelper_exec_work+0xf5/0x180 kernel/umh.c:166
process_one_work+0x9b2/0x1690 kernel/workqueue.c:2298
worker_thread+0x658/0x11f0 kernel/workqueue.c:2445
kthread+0x405/0x4f0 kernel/kthread.c:327
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295
}
... key at: [<ffffffff8b80a098>] tasklist_lock+0x18/0x40
... acquired at:
lock_acquire kernel/locking/lockdep.c:5637 [inline]
lock_acquire+0x1ab/0x510 kernel/locking/lockdep.c:5602
__raw_read_lock include/linux/rwlock_api_smp.h:149 [inline]
_raw_read_lock+0x5b/0x70 kernel/locking/spinlock.c:228
send_sigio+0xab/0x380 fs/fcntl.c:810
kill_fasync_rcu fs/fcntl.c:1021 [inline]
kill_fasync fs/fcntl.c:1035 [inline]
kill_fasync+0x1f8/0x470 fs/fcntl.c:1028
__pass_event drivers/input/evdev.c:240 [inline]
evdev_pass_values.part.0+0x64e/0x970 drivers/input/evdev.c:278
evdev_pass_values drivers/input/evdev.c:253 [inline]
evdev_events+0x359/0x3e0 drivers/input/evdev.c:306
input_to_handler+0x2a0/0x4c0 drivers/input/input.c:115
input_pass_values.part.0+0x230/0x710 drivers/input/input.c:145
input_pass_values drivers/input/input.c:134 [inline]
input_handle_event+0x373/0x1440 drivers/input/input.c:404
input_inject_event+0x1bd/0x320 drivers/input/input.c:476
evdev_write+0x430/0x760 drivers/input/evdev.c:530
vfs_write+0x28e/0xae0 fs/read_write.c:588
ksys_write+0x1ee/0x250 fs/read_write.c:643
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x44/0xae
stack backtrace:
CPU: 1 PID: 3750 Comm: syz-executor835 Not tainted 5.16.0-rc4-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
<TASK>
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0xcd/0x134 lib/dump_stack.c:106
print_bad_irq_dependency kernel/locking/lockdep.c:2577 [inline]
check_irq_usage.cold+0x4c1/0x6b0 kernel/locking/lockdep.c:2816
check_prev_add kernel/locking/lockdep.c:3067 [inline]
check_prevs_add kernel/locking/lockdep.c:3186 [inline]
validate_chain kernel/locking/lockdep.c:3801 [inline]
__lock_acquire+0x2a1f/0x54a0 kernel/locking/lockdep.c:5027
lock_acquire kernel/locking/lockdep.c:5637 [inline]
lock_acquire+0x1ab/0x510 kernel/locking/lockdep.c:5602
__raw_read_lock include/linux/rwlock_api_smp.h:149 [inline]
_raw_read_lock+0x5b/0x70 kernel/locking/spinlock.c:228
send_sigio+0xab/0x380 fs/fcntl.c:810
kill_fasync_rcu fs/fcntl.c:1021 [inline]
kill_fasync fs/fcntl.c:1035 [inline]
kill_fasync+0x1f8/0x470 fs/fcntl.c:1028
__pass_event drivers/input/evdev.c:240 [inline]
evdev_pass_values.part.0+0x64e/0x970 drivers/input/evdev.c:278
evdev_pass_values drivers/input/evdev.c:253 [inline]
evdev_events+0x359/0x3e0 drivers/input/evdev.c:306
input_to_handler+0x2a0/0x4c0 drivers/input/input.c:115
input_pass_values.part.0+0x230/0x710 drivers/input/input.c:145
input_pass_values drivers/input/input.c:134 [inline]
input_handle_event+0x373/0x1440 drivers/input/input.c:404
input_inject_event+0x1bd/0x320 drivers/input/input.c:476
evdev_write+0x430/0x760 drivers/input/evdev.c:530
vfs_write+0x28e/0xae0 fs/read_write.c:588
ksys_write+0x1ee/0x250 fs/read_write.c:643
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x7f45cf04c349
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 11 15 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f45ceff62f8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007f45cf0d04c0 RCX: 00007f45cf04c349
RDX: 0000000000003888 RSI: 0000000020000080 RDI: 0000000000000004
RBP: 00007f45cf09d08c R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00000000200012a8
R13: f36140dfc32eddd6 R14: 0030656c69662f2e R15: 00007f45cf0d04c8
</TASK>
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