=====================================================
WARNING: SOFTIRQ-safe -> SOFTIRQ-unsafe lock order detected
6.1.84-syzkaller #0 Not tainted
-----------------------------------------------------
syz-executor.4/30568 [HC0[0]:SC0[0]:HE0:SE1] is trying to acquire:
ffff888021b9dc90 (&new->fa_lock){....}-{2:2}, at: kill_fasync_rcu fs/fcntl.c:994 [inline]
ffff888021b9dc90 (&new->fa_lock){....}-{2:2}, at: kill_fasync+0x196/0x4d0 fs/fcntl.c:1015
and this task is already holding:
ffff8880182d9028 (&client->buffer_lock){..-.}-{2:2}, at: spin_lock include/linux/spinlock.h:351 [inline]
ffff8880182d9028 (&client->buffer_lock){..-.}-{2:2}, at: evdev_pass_values+0xee/0xad0 drivers/input/evdev.c:261
which would create a new lock dependency:
(&client->buffer_lock){..-.}-{2:2} -> (&new->fa_lock){....}-{2:2}
but this new dependency connects a SOFTIRQ-irq-safe lock:
(&client->buffer_lock){..-.}-{2:2}
... which became SOFTIRQ-irq-safe at:
lock_acquire+0x1f8/0x5a0 kernel/locking/lockdep.c:5662
__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:351 [inline]
evdev_pass_values+0xee/0xad0 drivers/input/evdev.c:261
evdev_events+0x1be/0x2f0 drivers/input/evdev.c:306
input_to_handler drivers/input/input.c:127 [inline]
input_pass_values+0x8e0/0x12a0 drivers/input/input.c:159
input_event_dispose+0x3fc/0x650 drivers/input/input.c:385
input_handle_event+0x97d/0xb00 drivers/input/input.c:402
input_event+0xa0/0xd0 drivers/input/input.c:431
hidinput_hid_event+0x13de/0x1d30 drivers/hid/hid-input.c:1706
hid_process_event+0x433/0x580 drivers/hid/hid-core.c:1544
hid_process_report drivers/hid/hid-core.c:1692 [inline]
hid_report_raw_event+0xfd5/0x17e0 drivers/hid/hid-core.c:2019
hid_input_report+0x420/0x4e0 drivers/hid/hid-core.c:2087
hid_irq_in+0x45c/0x690 drivers/hid/usbhid/hid-core.c:284
__usb_hcd_giveback_urb+0x371/0x530 drivers/usb/core/hcd.c:1675
dummy_timer+0x8ad/0x3200 drivers/usb/gadget/udc/dummy_hcd.c:1988
call_timer_fn+0x1ad/0x6b0 kernel/time/timer.c:1504
expire_timers kernel/time/timer.c:1549 [inline]
__run_timers+0x67c/0x890 kernel/time/timer.c:1820
run_timer_softirq+0x63/0xf0 kernel/time/timer.c:1833
__do_softirq+0x2e9/0xa4c kernel/softirq.c:571
invoke_softirq kernel/softirq.c:445 [inline]
__irq_exit_rcu+0x155/0x240 kernel/softirq.c:650
irq_exit_rcu+0x5/0x20 kernel/softirq.c:662
sysvec_apic_timer_interrupt+0x91/0xb0 arch/x86/kernel/apic/apic.c:1106
asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:653
preempt_schedule_irq+0xf2/0x1c0 kernel/sched/core.c:6870
irqentry_exit+0x53/0x80 kernel/entry/common.c:439
asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:653
put_tty_queue drivers/tty/n_tty.c:315 [inline]
n_tty_receive_char+0x79d/0xb60 drivers/tty/n_tty.c:1425
n_tty_receive_buf_standard+0x674/0x5330 drivers/tty/n_tty.c:1589
__receive_buf drivers/tty/n_tty.c:1613 [inline]
n_tty_receive_buf_common+0xb59/0x1410 drivers/tty/n_tty.c:1711
tty_port_default_receive_buf+0x6a/0x90 drivers/tty/tty_port.c:39
receive_buf drivers/tty/tty_buffer.c:515 [inline]
flush_to_ldisc+0x2f4/0x840 drivers/tty/tty_buffer.c:565
process_one_work+0x8a9/0x11d0 kernel/workqueue.c:2292
worker_thread+0xa47/0x1200 kernel/workqueue.c:2439
kthread+0x28d/0x320 kernel/kthread.c:376
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:307
to a SOFTIRQ-irq-unsafe lock:
(tasklist_lock){.+.+}-{2:2}
... which became SOFTIRQ-irq-unsafe at:
...
lock_acquire+0x1f8/0x5a0 kernel/locking/lockdep.c:5662
__raw_read_lock include/linux/rwlock_api_smp.h:150 [inline]
_raw_read_lock+0x32/0x40 kernel/locking/spinlock.c:228
do_wait+0x2c6/0xb80 kernel/exit.c:1602
kernel_wait+0xe5/0x230 kernel/exit.c:1792
call_usermodehelper_exec_sync kernel/umh.c:140 [inline]
call_usermodehelper_exec_work+0xb5/0x220 kernel/umh.c:167
process_one_work+0x8a9/0x11d0 kernel/workqueue.c:2292
worker_thread+0xa47/0x1200 kernel/workqueue.c:2439
kthread+0x28d/0x320 kernel/kthread.c:376
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:307
other info that might help us debug this:
Chain exists of:
&client->buffer_lock --> &new->fa_lock --> tasklist_lock
Possible interrupt unsafe locking scenario:
CPU0 CPU1
---- ----
lock(tasklist_lock);
local_irq_disable();
lock(&client->buffer_lock);
lock(&new->fa_lock);
<Interrupt>
lock(&client->buffer_lock);
*** DEADLOCK ***
7 locks held by syz-executor.4/30568:
#0: ffff888145b1f110 (&evdev->mutex){+.+.}-{3:3}, at: evdev_write+0x26d/0x7c0 drivers/input/evdev.c:513
#1: ffff8881476eb230 (&dev->event_lock#2){-.-.}-{2:2}, at: input_inject_event+0xc1/0x330 drivers/input/input.c:456
#2: ffffffff8d12a980 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:350 [inline]
#2: ffffffff8d12a980 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:791 [inline]
#2: ffffffff8d12a980 (rcu_read_lock){....}-{1:2}, at: input_inject_event+0xd1/0x330 drivers/input/input.c:458
#3: ffffffff8d12a980 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:350 [inline]
#3: ffffffff8d12a980 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:791 [inline]
#3: ffffffff8d12a980 (rcu_read_lock){....}-{1:2}, at: input_pass_values+0xa3/0x12a0 drivers/input/input.c:151
#4: ffffffff8d12a980 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:350 [inline]
#4: ffffffff8d12a980 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:791 [inline]
#4: ffffffff8d12a980 (rcu_read_lock){....}-{1:2}, at: evdev_events+0x6b/0x2f0 drivers/input/evdev.c:298
#5: ffff8880182d9028 (&client->buffer_lock){..-.}-{2:2}, at: spin_lock include/linux/spinlock.h:351 [inline]
#5: ffff8880182d9028 (&client->buffer_lock){..-.}-{2:2}, at: evdev_pass_values+0xee/0xad0 drivers/input/evdev.c:261
#6: ffffffff8d12a980 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:350 [inline]
#6: ffffffff8d12a980 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:791 [inline]
#6: ffffffff8d12a980 (rcu_read_lock){....}-{1:2}, at: kill_fasync+0x51/0x4d0 fs/fcntl.c:1014
the dependencies between SOFTIRQ-irq-safe lock and the holding lock:
-> (&client->buffer_lock){..-.}-{2:2} {
IN-SOFTIRQ-W at:
lock_acquire+0x1f8/0x5a0 kernel/locking/lockdep.c:5662
__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:351 [inline]
evdev_pass_values+0xee/0xad0 drivers/input/evdev.c:261
evdev_events+0x1be/0x2f0 drivers/input/evdev.c:306
input_to_handler drivers/input/input.c:127 [inline]
input_pass_values+0x8e0/0x12a0 drivers/input/input.c:159
input_event_dispose+0x3fc/0x650 drivers/input/input.c:385
input_handle_event+0x97d/0xb00 drivers/input/input.c:402
input_event+0xa0/0xd0 drivers/input/input.c:431
hidinput_hid_event+0x13de/0x1d30 drivers/hid/hid-input.c:1706
hid_process_event+0x433/0x580 drivers/hid/hid-core.c:1544
hid_process_report drivers/hid/hid-core.c:1692 [inline]
hid_report_raw_event+0xfd5/0x17e0 drivers/hid/hid-core.c:2019
hid_input_report+0x420/0x4e0 drivers/hid/hid-core.c:2087
hid_irq_in+0x45c/0x690 drivers/hid/usbhid/hid-core.c:284
__usb_hcd_giveback_urb+0x371/0x530 drivers/usb/core/hcd.c:1675
dummy_timer+0x8ad/0x3200 drivers/usb/gadget/udc/dummy_hcd.c:1988
call_timer_fn+0x1ad/0x6b0 kernel/time/timer.c:1504
expire_timers kernel/time/timer.c:1549 [inline]
__run_timers+0x67c/0x890 kernel/time/timer.c:1820
run_timer_softirq+0x63/0xf0 kernel/time/timer.c:1833
__do_softirq+0x2e9/0xa4c kernel/softirq.c:571
invoke_softirq kernel/softirq.c:445 [inline]
__irq_exit_rcu+0x155/0x240 kernel/softirq.c:650
irq_exit_rcu+0x5/0x20 kernel/softirq.c:662
sysvec_apic_timer_interrupt+0x91/0xb0 arch/x86/kernel/apic/apic.c:1106
asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:653
preempt_schedule_irq+0xf2/0x1c0 kernel/sched/core.c:6870
irqentry_exit+0x53/0x80 kernel/entry/common.c:439
asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:653
put_tty_queue drivers/tty/n_tty.c:315 [inline]
n_tty_receive_char+0x79d/0xb60 drivers/tty/n_tty.c:1425
n_tty_receive_buf_standard+0x674/0x5330 drivers/tty/n_tty.c:1589
__receive_buf drivers/tty/n_tty.c:1613 [inline]
n_tty_receive_buf_common+0xb59/0x1410 drivers/tty/n_tty.c:1711
tty_port_default_receive_buf+0x6a/0x90 drivers/tty/tty_port.c:39
receive_buf drivers/tty/tty_buffer.c:515 [inline]
flush_to_ldisc+0x2f4/0x840 drivers/tty/tty_buffer.c:565
process_one_work+0x8a9/0x11d0 kernel/workqueue.c:2292
worker_thread+0xa47/0x1200 kernel/workqueue.c:2439
kthread+0x28d/0x320 kernel/kthread.c:376
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:307
INITIAL USE at:
lock_acquire+0x1f8/0x5a0 kernel/locking/lockdep.c:5662
__raw_spin_lock_irq include/linux/spinlock_api_smp.h:119 [inline]
_raw_spin_lock_irq+0xcf/0x110 kernel/locking/spinlock.c:170
spin_lock_irq include/linux/spinlock.h:376 [inline]
evdev_fetch_next_event drivers/input/evdev.c:545 [inline]
evdev_read+0x532/0xe00 drivers/input/evdev.c:586
vfs_read+0x2ed/0xbe0 fs/read_write.c:468
ksys_read+0x19c/0x2c0 fs/read_write.c:613
do_syscall_x64 arch/x86/entry/common.c:51 [inline]
do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:81
entry_SYSCALL_64_after_hwframe+0x63/0xcd
}
... key at: [<ffffffff92053660>] evdev_open.__key.25+0x0/0x20
the dependencies between the lock to be acquired
and SOFTIRQ-irq-unsafe lock:
-> (tasklist_lock){.+.+}-{2:2} {
HARDIRQ-ON-R at:
lock_acquire+0x1f8/0x5a0 kernel/locking/lockdep.c:5662
__raw_read_lock include/linux/rwlock_api_smp.h:150 [inline]
_raw_read_lock+0x32/0x40 kernel/locking/spinlock.c:228
do_wait+0x2c6/0xb80 kernel/exit.c:1602
kernel_wait+0xe5/0x230 kernel/exit.c:1792
call_usermodehelper_exec_sync kernel/umh.c:140 [inline]
call_usermodehelper_exec_work+0xb5/0x220 kernel/umh.c:167
process_one_work+0x8a9/0x11d0 kernel/workqueue.c:2292
worker_thread+0xa47/0x1200 kernel/workqueue.c:2439
kthread+0x28d/0x320 kernel/kthread.c:376
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:307
SOFTIRQ-ON-R at:
lock_acquire+0x1f8/0x5a0 kernel/locking/lockdep.c:5662
__raw_read_lock include/linux/rwlock_api_smp.h:150 [inline]
_raw_read_lock+0x32/0x40 kernel/locking/spinlock.c:228
do_wait+0x2c6/0xb80 kernel/exit.c:1602
kernel_wait+0xe5/0x230 kernel/exit.c:1792
call_usermodehelper_exec_sync kernel/umh.c:140 [inline]
call_usermodehelper_exec_work+0xb5/0x220 kernel/umh.c:167
process_one_work+0x8a9/0x11d0 kernel/workqueue.c:2292
worker_thread+0xa47/0x1200 kernel/workqueue.c:2439
kthread+0x28d/0x320 kernel/kthread.c:376
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:307
INITIAL USE at:
lock_acquire+0x1f8/0x5a0 kernel/locking/lockdep.c:5662
__raw_write_lock_irq include/linux/rwlock_api_smp.h:195 [inline]
_raw_write_lock_irq+0xcf/0x110 kernel/locking/spinlock.c:326
copy_process+0x24b6/0x4060 kernel/fork.c:2401
kernel_clone+0x222/0x920 kernel/fork.c:2682
user_mode_thread+0x12e/0x190 kernel/fork.c:2758
rest_init+0x23/0x300 init/main.c:697
start_kernel+0x0/0x53f init/main.c:892
start_kernel+0x496/0x53f init/main.c:1139
secondary_startup_64_no_verify+0xcf/0xdb
INITIAL READ USE at:
lock_acquire+0x1f8/0x5a0 kernel/locking/lockdep.c:5662
__raw_read_lock include/linux/rwlock_api_smp.h:150 [inline]
_raw_read_lock+0x32/0x40 kernel/locking/spinlock.c:228
do_wait+0x2c6/0xb80 kernel/exit.c:1602
kernel_wait+0xe5/0x230 kernel/exit.c:1792
call_usermodehelper_exec_sync kernel/umh.c:140 [inline]
call_usermodehelper_exec_work+0xb5/0x220 kernel/umh.c:167
process_one_work+0x8a9/0x11d0 kernel/workqueue.c:2292
worker_thread+0xa47/0x1200 kernel/workqueue.c:2439
kthread+0x28d/0x320 kernel/kthread.c:376
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:307
}
... key at: [<ffffffff8ce0a058>] tasklist_lock+0x18/0x40
... acquired at:
lock_acquire+0x1f8/0x5a0 kernel/locking/lockdep.c:5662
__raw_read_lock include/linux/rwlock_api_smp.h:150 [inline]
_raw_read_lock+0x32/0x40 kernel/locking/spinlock.c:228
send_sigio+0xf8/0x360 fs/fcntl.c:790
dnotify_handle_event+0x138/0x440 fs/notify/dnotify/dnotify.c:115
fsnotify_handle_inode_event fs/notify/fsnotify.c:264 [inline]
fsnotify_handle_event fs/notify/fsnotify.c:293 [inline]
send_to_group fs/notify/fsnotify.c:364 [inline]
fsnotify+0x194f/0x2470 fs/notify/fsnotify.c:570
__fsnotify_parent+0x5dd/0x730 fs/notify/fsnotify.c:230
fsnotify_parent include/linux/fsnotify.h:77 [inline]
fsnotify_file include/linux/fsnotify.h:99 [inline]
fsnotify_access include/linux/fsnotify.h:309 [inline]
do_sendfile+0x8cb/0xff0 fs/read_write.c:1268
__do_sys_sendfile64 fs/read_write.c:1323 [inline]
__se_sys_sendfile64+0x178/0x1e0 fs/read_write.c:1309
do_syscall_x64 arch/x86/entry/common.c:51 [inline]
do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:81
entry_SYSCALL_64_after_hwframe+0x63/0xcd
-> (&f->f_owner.lock){...-}-{2:2} {
IN-SOFTIRQ-R at:
lock_acquire+0x1f8/0x5a0 kernel/locking/lockdep.c:5662
__raw_read_lock_irqsave include/linux/rwlock_api_smp.h:160 [inline]
_raw_read_lock_irqsave+0xd9/0x120 kernel/locking/spinlock.c:236
send_sigurg+0x25/0x3b0 fs/fcntl.c:815
sk_send_sigurg+0x6a/0xb0 net/core/sock.c:3362
tcp_check_urg+0x202/0x740 net/ipv4/tcp_input.c:5637
tcp_urg+0x154/0x440 net/ipv4/tcp_input.c:5678
tcp_rcv_established+0xe58/0x1f00 net/ipv4/tcp_input.c:6025
tcp_v4_do_rcv+0x487/0xb00 net/ipv4/tcp_ipv4.c:1677
tcp_v4_rcv+0x29e0/0x3250 net/ipv4/tcp_ipv4.c:2099
ip_protocol_deliver_rcu+0x381/0x740 net/ipv4/ip_input.c:205
ip_local_deliver_finish+0x2b4/0x4f0 net/ipv4/ip_input.c:233
NF_HOOK+0x39d/0x450 include/linux/netfilter.h:302
NF_HOOK+0x39d/0x450 include/linux/netfilter.h:302
__netif_receive_skb_one_core net/core/dev.c:5528 [inline]
__netif_receive_skb+0x1c6/0x530 net/core/dev.c:5642
process_backlog+0x381/0x760 net/core/dev.c:5970
__napi_poll+0xc7/0x470 net/core/dev.c:6537
napi_poll net/core/dev.c:6604 [inline]
net_rx_action+0x70f/0xeb0 net/core/dev.c:6718
__do_softirq+0x2e9/0xa4c kernel/softirq.c:571
run_ksoftirqd+0xc1/0x120 kernel/softirq.c:934
smpboot_thread_fn+0x52c/0xa30 kernel/smpboot.c:164
kthread+0x28d/0x320 kernel/kthread.c:376
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:307
INITIAL USE at:
lock_acquire+0x1f8/0x5a0 kernel/locking/lockdep.c:5662
__raw_write_lock_irq include/linux/rwlock_api_smp.h:195 [inline]
_raw_write_lock_irq+0xcf/0x110 kernel/locking/spinlock.c:326
f_modown+0x38/0x340 fs/fcntl.c:91
generic_add_lease fs/locks.c:1806 [inline]
generic_setlease+0xf3f/0x1440 fs/locks.c:1886
vfs_setlease fs/locks.c:1976 [inline]
do_fcntl_add_lease fs/locks.c:1997 [inline]
fcntl_setlease+0x341/0x3f0 fs/locks.c:2019
do_fcntl+0x10a/0x1510 fs/fcntl.c:401
__do_sys_fcntl fs/fcntl.c:452 [inline]
__se_sys_fcntl+0xd5/0x1b0 fs/fcntl.c:437
do_syscall_x64 arch/x86/entry/common.c:51 [inline]
do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:81
entry_SYSCALL_64_after_hwframe+0x63/0xcd
INITIAL READ USE at:
lock_acquire+0x1f8/0x5a0 kernel/locking/lockdep.c:5662
__raw_read_lock_irqsave include/linux/rwlock_api_smp.h:160 [inline]
_raw_read_lock_irqsave+0xd9/0x120 kernel/locking/spinlock.c:236
send_sigio+0x2f/0x360 fs/fcntl.c:776
kill_fasync_rcu fs/fcntl.c:1001 [inline]
kill_fasync+0x232/0x4d0 fs/fcntl.c:1015
lease_break_callback+0x22/0x30 fs/locks.c:521
__break_lease+0x4d1/0x1550 fs/locks.c:1521
vfs_truncate+0x267/0x3a0 fs/open.c:105
do_sys_truncate+0xda/0x190 fs/open.c:134
do_syscall_x64 arch/x86/entry/common.c:51 [inline]
do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:81
entry_SYSCALL_64_after_hwframe+0x63/0xcd
}
... key at: [<ffffffff91d59c60>] __alloc_file.__key+0x0/0x10
... acquired at:
lock_acquire+0x1f8/0x5a0 kernel/locking/lockdep.c:5662
__raw_read_lock_irqsave include/linux/rwlock_api_smp.h:160 [inline]
_raw_read_lock_irqsave+0xd9/0x120 kernel/locking/spinlock.c:236
send_sigio+0x2f/0x360 fs/fcntl.c:776
kill_fasync_rcu fs/fcntl.c:1001 [inline]
kill_fasync+0x232/0x4d0 fs/fcntl.c:1015
lease_break_callback+0x22/0x30 fs/locks.c:521
__break_lease+0x4d1/0x1550 fs/locks.c:1521
vfs_truncate+0x267/0x3a0 fs/open.c:105
do_sys_truncate+0xda/0x190 fs/open.c:134
do_syscall_x64 arch/x86/entry/common.c:51 [inline]
do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:81
entry_SYSCALL_64_after_hwframe+0x63/0xcd
-> (&new->fa_lock){....}-{2:2} {
INITIAL USE at:
lock_acquire+0x1f8/0x5a0 kernel/locking/lockdep.c:5662
__raw_write_lock_irq include/linux/rwlock_api_smp.h:195 [inline]
_raw_write_lock_irq+0xcf/0x110 kernel/locking/spinlock.c:326
fasync_remove_entry+0xfb/0x1d0 fs/fcntl.c:871
lease_modify+0x19c/0x380 fs/locks.c:1386
locks_remove_lease fs/locks.c:2624 [inline]
locks_remove_file+0x5d3/0x1040 fs/locks.c:2649
__fput+0x326/0x890 fs/file_table.c:312
task_work_run+0x246/0x300 kernel/task_work.c:179
resume_user_mode_work include/linux/resume_user_mode.h:49 [inline]
exit_to_user_mode_loop+0xde/0x100 kernel/entry/common.c:177
exit_to_user_mode_prepare+0xb1/0x140 kernel/entry/common.c:210
__syscall_exit_to_user_mode_work kernel/entry/common.c:292 [inline]
syscall_exit_to_user_mode+0x60/0x270 kernel/entry/common.c:303
do_syscall_64+0x49/0xb0 arch/x86/entry/common.c:87
entry_SYSCALL_64_after_hwframe+0x63/0xcd
INITIAL READ USE at:
lock_acquire+0x1f8/0x5a0 kernel/locking/lockdep.c:5662
__raw_read_lock_irqsave include/linux/rwlock_api_smp.h:160 [inline]
_raw_read_lock_irqsave+0xd9/0x120 kernel/locking/spinlock.c:236
kill_fasync_rcu fs/fcntl.c:994 [inline]
kill_fasync+0x196/0x4d0 fs/fcntl.c:1015
lease_break_callback+0x22/0x30 fs/locks.c:521
__break_lease+0x4d1/0x1550 fs/locks.c:1521
vfs_truncate+0x267/0x3a0 fs/open.c:105
do_sys_truncate+0xda/0x190 fs/open.c:134
do_syscall_x64 arch/x86/entry/common.c:51 [inline]
do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:81
entry_SYSCALL_64_after_hwframe+0x63/0xcd
}
... key at: [<ffffffff91d5a8e0>] fasync_insert_entry.__key+0x0/0x20
... acquired at:
lock_acquire+0x1f8/0x5a0 kernel/locking/lockdep.c:5662
__raw_read_lock_irqsave include/linux/rwlock_api_smp.h:160 [inline]
_raw_read_lock_irqsave+0xd9/0x120 kernel/locking/spinlock.c:236
kill_fasync_rcu fs/fcntl.c:994 [inline]
kill_fasync+0x196/0x4d0 fs/fcntl.c:1015
__pass_event drivers/input/evdev.c:240 [inline]
evdev_pass_values+0x586/0xad0 drivers/input/evdev.c:278
evdev_events+0x1be/0x2f0 drivers/input/evdev.c:306
input_to_handler drivers/input/input.c:127 [inline]
input_pass_values+0x8e0/0x12a0 drivers/input/input.c:159
input_event_dispose+0x366/0x650 drivers/input/input.c:374
input_handle_event+0x97d/0xb00 drivers/input/input.c:402
input_inject_event+0x224/0x330 drivers/input/input.c:461
evdev_write+0x668/0x7c0 drivers/input/evdev.c:530
vfs_write+0x2d9/0xba0 fs/read_write.c:582
ksys_write+0x19c/0x2c0 fs/read_write.c:637
do_syscall_x64 arch/x86/entry/common.c:51 [inline]
do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:81
entry_SYSCALL_64_after_hwframe+0x63/0xcd
stack backtrace:
CPU: 0 PID: 30568 Comm: syz-executor.4 Not tainted 6.1.84-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024
Call Trace:
<TASK>
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0x1e3/0x2cb lib/dump_stack.c:106
print_bad_irq_dependency kernel/locking/lockdep.c:2604 [inline]
check_irq_usage kernel/locking/lockdep.c:2843 [inline]
check_prev_add kernel/locking/lockdep.c:3094 [inline]
check_prevs_add kernel/locking/lockdep.c:3209 [inline]
validate_chain+0x4d16/0x5950 kernel/locking/lockdep.c:3825
__lock_acquire+0x125b/0x1f80 kernel/locking/lockdep.c:5049
lock_acquire+0x1f8/0x5a0 kernel/locking/lockdep.c:5662
__raw_read_lock_irqsave include/linux/rwlock_api_smp.h:160 [inline]
_raw_read_lock_irqsave+0xd9/0x120 kernel/locking/spinlock.c:236
kill_fasync_rcu fs/fcntl.c:994 [inline]
kill_fasync+0x196/0x4d0 fs/fcntl.c:1015
__pass_event drivers/input/evdev.c:240 [inline]
evdev_pass_values+0x586/0xad0 drivers/input/evdev.c:278
evdev_events+0x1be/0x2f0 drivers/input/evdev.c:306
input_to_handler drivers/input/input.c:127 [inline]
input_pass_values+0x8e0/0x12a0 drivers/input/input.c:159
input_event_dispose+0x366/0x650 drivers/input/input.c:374
input_handle_event+0x97d/0xb00 drivers/input/input.c:402
input_inject_event+0x224/0x330 drivers/input/input.c:461
evdev_write+0x668/0x7c0 drivers/input/evdev.c:530
vfs_write+0x2d9/0xba0 fs/read_write.c:582
ksys_write+0x19c/0x2c0 fs/read_write.c:637
do_syscall_x64 arch/x86/entry/common.c:51 [inline]
do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:81
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7fb1b807de69
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 e1 20 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 b0 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fb1b8cfc0c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007fb1b81abf80 RCX: 00007fb1b807de69
RDX: 0000000000002250 RSI: 0000000020000040 RDI: 0000000000000004
RBP: 00007fb1b80ca47a R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000000b R14: 00007fb1b81abf80 R15: 00007fff7ee54018
</TASK>