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Message-ID: <0000000000009fe71c0616842b53@google.com>
Date: Sat, 20 Apr 2024 02:53:03 -0700
From: syzbot <syzbot+d4c06e848a1c1f9f726f@...kaller.appspotmail.com>
To: aha310510@...il.com, linux-kernel@...r.kernel.org,
syzkaller-bugs@...glegroups.com
Subject: Re: [syzbot] [fs?] possible deadlock in input_event (2)
Hello,
syzbot has tested the proposed patch but the reproducer is still triggering an issue:
possible deadlock in input_event
=====================================================
WARNING: HARDIRQ-safe -> HARDIRQ-unsafe lock order detected
6.9.0-rc4-syzkaller-00214-g13a2e429f644-dirty #0 Not tainted
-----------------------------------------------------
syz-executor.0/5495 [HC0[0]:SC0[0]:HE0:SE1] is trying to acquire:
ffffffff8e00a058 (tasklist_lock){.+.+}-{2:2}, at: send_sigurg+0xee/0x3c0 fs/fcntl.c:851
and this task is already holding:
ffff88801c7f4398 (&f->f_owner.lock){....}-{2:2}, at: send_sigurg+0x29/0x3c0 fs/fcntl.c:835
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){-...}-{2:2}
.. which became HARDIRQ-irq-safe at:
lock_acquire+0x1ed/0x550 kernel/locking/lockdep.c:5754
__raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline]
_raw_spin_lock_irqsave+0xd5/0x120 kernel/locking/spinlock.c:162
input_event+0x91/0xd0 drivers/input/input.c:434
input_report_key include/linux/input.h:425 [inline]
psmouse_report_standard_buttons drivers/input/mouse/psmouse-base.c:128 [inline]
psmouse_report_standard_packet+0x54/0x200 drivers/input/mouse/psmouse-base.c:146
psmouse_process_byte+0x48c/0x680 drivers/input/mouse/psmouse-base.c:237
psmouse_handle_byte+0x49/0x4c0 drivers/input/mouse/psmouse-base.c:279
ps2_interrupt+0x17c/0x8e0 drivers/input/serio/libps2.c:613
serio_interrupt+0x90/0x140 drivers/input/serio/serio.c:998
i8042_interrupt+0x375/0x770 drivers/input/serio/i8042.c:606
__handle_irq_event_percpu+0x29a/0xa80 kernel/irq/handle.c:158
handle_irq_event_percpu kernel/irq/handle.c:193 [inline]
handle_irq_event+0x89/0x1f0 kernel/irq/handle.c:210
handle_edge_irq+0x25f/0xc20 kernel/irq/chip.c:831
generic_handle_irq_desc include/linux/irqdesc.h:161 [inline]
handle_irq arch/x86/kernel/irq.c:238 [inline]
__common_interrupt+0x138/0x230 arch/x86/kernel/irq.c:257
common_interrupt+0xa5/0xd0 arch/x86/kernel/irq.c:247
asm_common_interrupt+0x26/0x40 arch/x86/include/asm/idtentry.h:693
pv_queued_spin_unlock arch/x86/include/asm/paravirt.h:589 [inline]
queued_spin_unlock arch/x86/include/asm/qspinlock.h:57 [inline]
do_raw_spin_unlock+0x118/0x8b0 kernel/locking/spinlock_debug.c:142
__raw_spin_unlock include/linux/spinlock_api_smp.h:142 [inline]
_raw_spin_unlock+0x1e/0x50 kernel/locking/spinlock.c:186
usb_device_match+0x41b/0x4a0 drivers/usb/core/driver.c:897
driver_match_device drivers/base/base.h:167 [inline]
__driver_attach+0x6c/0x710 drivers/base/dd.c:1170
bus_for_each_dev+0x239/0x2b0 drivers/base/bus.c:368
bus_add_driver+0x347/0x620 drivers/base/bus.c:673
driver_register+0x23a/0x320 drivers/base/driver.c:246
usb_register_driver+0x1f5/0x3b0 drivers/usb/core/driver.c:1068
do_one_initcall+0x248/0x880 init/main.c:1245
do_initcall_level+0x157/0x210 init/main.c:1307
do_initcalls+0x3f/0x80 init/main.c:1323
kernel_init_freeable+0x435/0x5d0 init/main.c:1555
kernel_init+0x1d/0x2b0 init/main.c:1444
ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
to a HARDIRQ-irq-unsafe lock:
(tasklist_lock){.+.+}-{2:2}
.. which became HARDIRQ-irq-unsafe at:
..
lock_acquire+0x1ed/0x550 kernel/locking/lockdep.c:5754
__raw_read_lock include/linux/rwlock_api_smp.h:150 [inline]
_raw_read_lock+0x36/0x50 kernel/locking/spinlock.c:228
__do_wait+0x12d/0x850 kernel/exit.c:1587
do_wait+0x1e9/0x560 kernel/exit.c:1631
kernel_wait+0xe9/0x240 kernel/exit.c:1807
call_usermodehelper_exec_sync kernel/umh.c:137 [inline]
call_usermodehelper_exec_work+0xbd/0x230 kernel/umh.c:164
process_one_work kernel/workqueue.c:3254 [inline]
process_scheduled_works+0xa10/0x17c0 kernel/workqueue.c:3335
worker_thread+0x86d/0xd70 kernel/workqueue.c:3416
kthread+0x2f0/0x390 kernel/kthread.c:388
ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
other info that might help us debug this:
Chain exists of:
&dev->event_lock#2 --> &f->f_owner.lock --> tasklist_lock
Possible interrupt unsafe locking scenario:
CPU0 CPU1
---- ----
lock(tasklist_lock);
local_irq_disable();
lock(&dev->event_lock#2);
lock(&f->f_owner.lock);
<Interrupt>
lock(&dev->event_lock#2);
*** DEADLOCK ***
2 locks held by syz-executor.0/5495:
#0: ffff88802b50d058 (sk_lock-AF_INET6){+.+.}-{0:0}, at: lock_sock include/net/sock.h:1671 [inline]
#0: ffff88802b50d058 (sk_lock-AF_INET6){+.+.}-{0:0}, at: tcp_sendmsg+0x22/0x50 net/ipv4/tcp.c:1341
#1: ffff88801c7f4398 (&f->f_owner.lock){....}-{2:2}, at: send_sigurg+0x29/0x3c0 fs/fcntl.c:835
the dependencies between HARDIRQ-irq-safe lock and the holding lock:
-> (&dev->event_lock#2){-...}-{2:2} {
IN-HARDIRQ-W at:
lock_acquire+0x1ed/0x550 kernel/locking/lockdep.c:5754
__raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline]
_raw_spin_lock_irqsave+0xd5/0x120 kernel/locking/spinlock.c:162
input_event+0x91/0xd0 drivers/input/input.c:434
input_report_key include/linux/input.h:425 [inline]
psmouse_report_standard_buttons drivers/input/mouse/psmouse-base.c:128 [inline]
psmouse_report_standard_packet+0x54/0x200 drivers/input/mouse/psmouse-base.c:146
psmouse_process_byte+0x48c/0x680 drivers/input/mouse/psmouse-base.c:237
psmouse_handle_byte+0x49/0x4c0 drivers/input/mouse/psmouse-base.c:279
ps2_interrupt+0x17c/0x8e0 drivers/input/serio/libps2.c:613
serio_interrupt+0x90/0x140 drivers/input/serio/serio.c:998
i8042_interrupt+0x375/0x770 drivers/input/serio/i8042.c:606
__handle_irq_event_percpu+0x29a/0xa80 kernel/irq/handle.c:158
handle_irq_event_percpu kernel/irq/handle.c:193 [inline]
handle_irq_event+0x89/0x1f0 kernel/irq/handle.c:210
handle_edge_irq+0x25f/0xc20 kernel/irq/chip.c:831
generic_handle_irq_desc include/linux/irqdesc.h:161 [inline]
handle_irq arch/x86/kernel/irq.c:238 [inline]
__common_interrupt+0x138/0x230 arch/x86/kernel/irq.c:257
common_interrupt+0xa5/0xd0 arch/x86/kernel/irq.c:247
asm_common_interrupt+0x26/0x40 arch/x86/include/asm/idtentry.h:693
pv_queued_spin_unlock arch/x86/include/asm/paravirt.h:589 [inline]
queued_spin_unlock arch/x86/include/asm/qspinlock.h:57 [inline]
do_raw_spin_unlock+0x118/0x8b0 kernel/locking/spinlock_debug.c:142
__raw_spin_unlock include/linux/spinlock_api_smp.h:142 [inline]
_raw_spin_unlock+0x1e/0x50 kernel/locking/spinlock.c:186
usb_device_match+0x41b/0x4a0 drivers/usb/core/driver.c:897
driver_match_device drivers/base/base.h:167 [inline]
__driver_attach+0x6c/0x710 drivers/base/dd.c:1170
bus_for_each_dev+0x239/0x2b0 drivers/base/bus.c:368
bus_add_driver+0x347/0x620 drivers/base/bus.c:673
driver_register+0x23a/0x320 drivers/base/driver.c:246
usb_register_driver+0x1f5/0x3b0 drivers/usb/core/driver.c:1068
do_one_initcall+0x248/0x880 init/main.c:1245
do_initcall_level+0x157/0x210 init/main.c:1307
do_initcalls+0x3f/0x80 init/main.c:1323
kernel_init_freeable+0x435/0x5d0 init/main.c:1555
kernel_init+0x1d/0x2b0 init/main.c:1444
ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
INITIAL USE at:
lock_acquire+0x1ed/0x550 kernel/locking/lockdep.c:5754
__raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline]
_raw_spin_lock_irqsave+0xd5/0x120 kernel/locking/spinlock.c:162
input_inject_event+0xc5/0x340 drivers/input/input.c:460
led_trigger_event+0x11c/0x1e0 drivers/leds/led-triggers.c:392
kbd_led_trigger_activate+0xbd/0x100 drivers/tty/vt/keyboard.c:1036
led_trigger_set+0x541/0x950 drivers/leds/led-triggers.c:198
led_match_default_trigger drivers/leds/led-triggers.c:256 [inline]
led_trigger_set_default+0x229/0x260 drivers/leds/led-triggers.c:274
led_classdev_register_ext+0x773/0x960 drivers/leds/led-class.c:561
led_classdev_register include/linux/leds.h:271 [inline]
input_leds_connect+0x497/0x640 drivers/input/input-leds.c:145
input_attach_handler drivers/input/input.c:1064 [inline]
input_register_device+0xcfa/0x1090 drivers/input/input.c:2396
atkbd_connect+0x752/0xa00 drivers/input/keyboard/atkbd.c:1342
serio_connect_driver drivers/input/serio/serio.c:44 [inline]
serio_driver_probe+0x7f/0xa0 drivers/input/serio/serio.c:775
really_probe+0x2b8/0xad0 drivers/base/dd.c:656
__driver_probe_device+0x1a2/0x390 drivers/base/dd.c:798
driver_probe_device+0x50/0x430 drivers/base/dd.c:828
__driver_attach+0x45f/0x710 drivers/base/dd.c:1214
bus_for_each_dev+0x239/0x2b0 drivers/base/bus.c:368
serio_attach_driver drivers/input/serio/serio.c:804 [inline]
serio_handle_event+0x1c7/0x920 drivers/input/serio/serio.c:224
process_one_work kernel/workqueue.c:3254 [inline]
process_scheduled_works+0xa10/0x17c0 kernel/workqueue.c:3335
worker_thread+0x86d/0xd70 kernel/workqueue.c:3416
kthread+0x2f0/0x390 kernel/kthread.c:388
ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
}
... key at: [<ffffffff94ab3660>] input_allocate_device.__key.5+0x0/0x20
-> (&client->buffer_lock){....}-{2:2} {
INITIAL USE at:
lock_acquire+0x1ed/0x550 kernel/locking/lockdep.c:5754
__raw_spin_lock include/linux/spinlock_api_smp.h:133 [inline]
_raw_spin_lock+0x2e/0x40 kernel/locking/spinlock.c:154
spin_lock include/linux/spinlock.h:351 [inline]
evdev_pass_values+0xf2/0xad0 drivers/input/evdev.c:261
evdev_events+0x1c2/0x300 drivers/input/evdev.c:306
input_to_handler drivers/input/input.c:129 [inline]
input_pass_values+0x84d/0x1200 drivers/input/input.c:161
input_event_dispose+0x36c/0x650 drivers/input/input.c:378
input_handle_event+0xa71/0xbe0 drivers/input/input.c:406
input_inject_event+0x22f/0x340 drivers/input/input.c:465
evdev_write+0x672/0x7c0 drivers/input/evdev.c:530
vfs_write+0x2a4/0xcb0 fs/read_write.c:588
ksys_write+0x1a0/0x2c0 fs/read_write.c:643
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xf5/0x240 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
}
... key at: [<ffffffff94ab3900>] evdev_open.__key.24+0x0/0x20
... acquired at:
lock_acquire+0x1ed/0x550 kernel/locking/lockdep.c:5754
__raw_spin_lock include/linux/spinlock_api_smp.h:133 [inline]
_raw_spin_lock+0x2e/0x40 kernel/locking/spinlock.c:154
spin_lock include/linux/spinlock.h:351 [inline]
evdev_pass_values+0xf2/0xad0 drivers/input/evdev.c:261
evdev_events+0x1c2/0x300 drivers/input/evdev.c:306
input_to_handler drivers/input/input.c:129 [inline]
input_pass_values+0x84d/0x1200 drivers/input/input.c:161
input_event_dispose+0x36c/0x650 drivers/input/input.c:378
input_handle_event+0xa71/0xbe0 drivers/input/input.c:406
input_inject_event+0x22f/0x340 drivers/input/input.c:465
evdev_write+0x672/0x7c0 drivers/input/evdev.c:530
vfs_write+0x2a4/0xcb0 fs/read_write.c:588
ksys_write+0x1a0/0x2c0 fs/read_write.c:643
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xf5/0x240 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
-> (&new->fa_lock){....}-{2:2} {
INITIAL READ USE at:
lock_acquire+0x1ed/0x550 kernel/locking/lockdep.c:5754
__raw_read_lock_irqsave include/linux/rwlock_api_smp.h:160 [inline]
_raw_read_lock_irqsave+0xdd/0x130 kernel/locking/spinlock.c:236
kill_fasync_rcu fs/fcntl.c:1008 [inline]
kill_fasync+0x19e/0x4d0 fs/fcntl.c:1029
__pass_event drivers/input/evdev.c:240 [inline]
evdev_pass_values+0x58a/0xad0 drivers/input/evdev.c:278
evdev_events+0x1c2/0x300 drivers/input/evdev.c:306
input_to_handler drivers/input/input.c:129 [inline]
input_pass_values+0x84d/0x1200 drivers/input/input.c:161
input_event_dispose+0x36c/0x650 drivers/input/input.c:378
input_handle_event+0xa71/0xbe0 drivers/input/input.c:406
input_inject_event+0x22f/0x340 drivers/input/input.c:465
evdev_write+0x672/0x7c0 drivers/input/evdev.c:530
vfs_write+0x2a4/0xcb0 fs/read_write.c:588
ksys_write+0x1a0/0x2c0 fs/read_write.c:643
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xf5/0x240 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
}
... key at: [<ffffffff947baba0>] fasync_insert_entry.__key+0x0/0x20
... acquired at:
lock_acquire+0x1ed/0x550 kernel/locking/lockdep.c:5754
__raw_read_lock_irqsave include/linux/rwlock_api_smp.h:160 [inline]
_raw_read_lock_irqsave+0xdd/0x130 kernel/locking/spinlock.c:236
kill_fasync_rcu fs/fcntl.c:1008 [inline]
kill_fasync+0x19e/0x4d0 fs/fcntl.c:1029
__pass_event drivers/input/evdev.c:240 [inline]
evdev_pass_values+0x58a/0xad0 drivers/input/evdev.c:278
evdev_events+0x1c2/0x300 drivers/input/evdev.c:306
input_to_handler drivers/input/input.c:129 [inline]
input_pass_values+0x84d/0x1200 drivers/input/input.c:161
input_event_dispose+0x36c/0x650 drivers/input/input.c:378
input_handle_event+0xa71/0xbe0 drivers/input/input.c:406
input_inject_event+0x22f/0x340 drivers/input/input.c:465
evdev_write+0x672/0x7c0 drivers/input/evdev.c:530
vfs_write+0x2a4/0xcb0 fs/read_write.c:588
ksys_write+0x1a0/0x2c0 fs/read_write.c:643
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xf5/0x240 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
-> (&f->f_owner.lock){....}-{2:2} {
INITIAL USE at:
lock_acquire+0x1ed/0x550 kernel/locking/lockdep.c:5754
__raw_write_lock_irq include/linux/rwlock_api_smp.h:195 [inline]
_raw_write_lock_irq+0xd3/0x120 kernel/locking/spinlock.c:326
f_modown+0x38/0x340 fs/fcntl.c:93
__f_setown fs/fcntl.c:112 [inline]
f_setown+0x14f/0x200 fs/fcntl.c:140
do_fcntl+0x8b1/0x16f0 fs/fcntl.c:393
__do_sys_fcntl fs/fcntl.c:472 [inline]
__se_sys_fcntl+0xd2/0x1b0 fs/fcntl.c:457
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xf5/0x240 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
INITIAL READ USE at:
lock_acquire+0x1ed/0x550 kernel/locking/lockdep.c:5754
__raw_read_lock_irqsave include/linux/rwlock_api_smp.h:160 [inline]
_raw_read_lock_irqsave+0xdd/0x130 kernel/locking/spinlock.c:236
send_sigio+0x33/0x360 fs/fcntl.c:796
kill_fasync_rcu fs/fcntl.c:1015 [inline]
kill_fasync+0x23a/0x4d0 fs/fcntl.c:1029
__pass_event drivers/input/evdev.c:240 [inline]
evdev_pass_values+0x58a/0xad0 drivers/input/evdev.c:278
evdev_events+0x1c2/0x300 drivers/input/evdev.c:306
input_to_handler drivers/input/input.c:129 [inline]
input_pass_values+0x84d/0x1200 drivers/input/input.c:161
input_event_dispose+0x36c/0x650 drivers/input/input.c:378
input_handle_event+0xa71/0xbe0 drivers/input/input.c:406
input_inject_event+0x22f/0x340 drivers/input/input.c:465
evdev_write+0x672/0x7c0 drivers/input/evdev.c:530
vfs_write+0x2a4/0xcb0 fs/read_write.c:588
ksys_write+0x1a0/0x2c0 fs/read_write.c:643
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xf5/0x240 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
}
... key at: [<ffffffff947b9f40>] init_file.__key+0x0/0x20
... acquired at:
lock_acquire+0x1ed/0x550 kernel/locking/lockdep.c:5754
__raw_read_lock_irqsave include/linux/rwlock_api_smp.h:160 [inline]
_raw_read_lock_irqsave+0xdd/0x130 kernel/locking/spinlock.c:236
send_sigio+0x33/0x360 fs/fcntl.c:796
kill_fasync_rcu fs/fcntl.c:1015 [inline]
kill_fasync+0x23a/0x4d0 fs/fcntl.c:1029
__pass_event drivers/input/evdev.c:240 [inline]
evdev_pass_values+0x58a/0xad0 drivers/input/evdev.c:278
evdev_events+0x1c2/0x300 drivers/input/evdev.c:306
input_to_handler drivers/input/input.c:129 [inline]
input_pass_values+0x84d/0x1200 drivers/input/input.c:161
input_event_dispose+0x36c/0x650 drivers/input/input.c:378
input_handle_event+0xa71/0xbe0 drivers/input/input.c:406
input_inject_event+0x22f/0x340 drivers/input/input.c:465
evdev_write+0x672/0x7c0 drivers/input/evdev.c:530
vfs_write+0x2a4/0xcb0 fs/read_write.c:588
ksys_write+0x1a0/0x2c0 fs/read_write.c:643
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xf5/0x240 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
the dependencies between the lock to be acquired
and HARDIRQ-irq-unsafe lock:
-> (tasklist_lock){.+.+}-{2:2} {
HARDIRQ-ON-R at:
lock_acquire+0x1ed/0x550 kernel/locking/lockdep.c:5754
__raw_read_lock include/linux/rwlock_api_smp.h:150 [inline]
_raw_read_lock+0x36/0x50 kernel/locking/spinlock.c:228
__do_wait+0x12d/0x850 kernel/exit.c:1587
do_wait+0x1e9/0x560 kernel/exit.c:1631
kernel_wait+0xe9/0x240 kernel/exit.c:1807
call_usermodehelper_exec_sync kernel/umh.c:137 [inline]
call_usermodehelper_exec_work+0xbd/0x230 kernel/umh.c:164
process_one_work kernel/workqueue.c:3254 [inline]
process_scheduled_works+0xa10/0x17c0 kernel/workqueue.c:3335
worker_thread+0x86d/0xd70 kernel/workqueue.c:3416
kthread+0x2f0/0x390 kernel/kthread.c:388
ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
SOFTIRQ-ON-R at:
lock_acquire+0x1ed/0x550 kernel/locking/lockdep.c:5754
__raw_read_lock include/linux/rwlock_api_smp.h:150 [inline]
_raw_read_lock+0x36/0x50 kernel/locking/spinlock.c:228
__do_wait+0x12d/0x850 kernel/exit.c:1587
do_wait+0x1e9/0x560 kernel/exit.c:1631
kernel_wait+0xe9/0x240 kernel/exit.c:1807
call_usermodehelper_exec_sync kernel/umh.c:137 [inline]
call_usermodehelper_exec_work+0xbd/0x230 kernel/umh.c:164
process_one_work kernel/workqueue.c:3254 [inline]
process_scheduled_works+0xa10/0x17c0 kernel/workqueue.c:3335
worker_thread+0x86d/0xd70 kernel/workqueue.c:3416
kthread+0x2f0/0x390 kernel/kthread.c:388
ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
INITIAL USE at:
lock_acquire+0x1ed/0x550 kernel/locking/lockdep.c:5754
__raw_write_lock_irq include/linux/rwlock_api_smp.h:195 [inline]
_raw_write_lock_irq+0xd3/0x120 kernel/locking/spinlock.c:326
copy_process+0x228b/0x3df0 kernel/fork.c:2516
kernel_clone+0x226/0x8f0 kernel/fork.c:2797
user_mode_thread+0x132/0x1a0 kernel/fork.c:2875
rest_init+0x23/0x300 init/main.c:704
start_kernel+0x47a/0x500 init/main.c:1081
x86_64_start_reservations+0x2a/0x30 arch/x86/kernel/head64.c:507
x86_64_start_kernel+0x99/0xa0 arch/x86/kernel/head64.c:488
common_startup_64+0x13e/0x147
INITIAL READ USE at:
lock_acquire+0x1ed/0x550 kernel/locking/lockdep.c:5754
__raw_read_lock include/linux/rwlock_api_smp.h:150 [inline]
_raw_read_lock+0x36/0x50 kernel/locking/spinlock.c:228
__do_wait+0x12d/0x850 kernel/exit.c:1587
do_wait+0x1e9/0x560 kernel/exit.c:1631
kernel_wait+0xe9/0x240 kernel/exit.c:1807
call_usermodehelper_exec_sync kernel/umh.c:137 [inline]
call_usermodehelper_exec_work+0xbd/0x230 kernel/umh.c:164
process_one_work kernel/workqueue.c:3254 [inline]
process_scheduled_works+0xa10/0x17c0 kernel/workqueue.c:3335
worker_thread+0x86d/0xd70 kernel/workqueue.c:3416
kthread+0x2f0/0x390 kernel/kthread.c:388
ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
}
... key at: [<ffffffff8e00a058>] tasklist_lock+0x18/0x40
... acquired at:
lock_acquire+0x1ed/0x550 kernel/locking/lockdep.c:5754
__raw_read_lock_irq include/linux/rwlock_api_smp.h:169 [inline]
_raw_read_lock_irq+0xda/0x120 kernel/locking/spinlock.c:244
send_sigurg+0xee/0x3c0 fs/fcntl.c:851
sk_send_sigurg+0x6e/0xc0 net/core/sock.c:3412
tcp_check_urg+0x207/0x740 net/ipv4/tcp_input.c:5777
tcp_urg+0x15c/0x450 net/ipv4/tcp_input.c:5818
tcp_rcv_established+0xfac/0x2020 net/ipv4/tcp_input.c:6167
tcp_v6_do_rcv+0xa09/0x1300 net/ipv6/tcp_ipv6.c:1644
sk_backlog_rcv include/net/sock.h:1106 [inline]
__release_sock+0x1c8/0x350 net/core/sock.c:2984
release_sock+0x61/0x1f0 net/core/sock.c:3550
tcp_sendmsg+0x3a/0x50 net/ipv4/tcp.c:1343
sock_sendmsg_nosec net/socket.c:730 [inline]
__sock_sendmsg+0xef/0x270 net/socket.c:745
__sys_sendto+0x3a4/0x4f0 net/socket.c:2191
__do_sys_sendto net/socket.c:2203 [inline]
__se_sys_sendto net/socket.c:2199 [inline]
__x64_sys_sendto+0xde/0x100 net/socket.c:2199
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xf5/0x240 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
stack backtrace:
CPU: 1 PID: 5495 Comm: syz-executor.0 Not tainted 6.9.0-rc4-syzkaller-00214-g13a2e429f644-dirty #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+0x241/0x360 lib/dump_stack.c:114
print_bad_irq_dependency kernel/locking/lockdep.c:2626 [inline]
check_irq_usage kernel/locking/lockdep.c:2865 [inline]
check_prev_add kernel/locking/lockdep.c:3138 [inline]
check_prevs_add kernel/locking/lockdep.c:3253 [inline]
validate_chain+0x4dc7/0x58e0 kernel/locking/lockdep.c:3869
__lock_acquire+0x1346/0x1fd0 kernel/locking/lockdep.c:5137
lock_acquire+0x1ed/0x550 kernel/locking/lockdep.c:5754
__raw_read_lock_irq include/linux/rwlock_api_smp.h:169 [inline]
_raw_read_lock_irq+0xda/0x120 kernel/locking/spinlock.c:244
send_sigurg+0xee/0x3c0 fs/fcntl.c:851
sk_send_sigurg+0x6e/0xc0 net/core/sock.c:3412
tcp_check_urg+0x207/0x740 net/ipv4/tcp_input.c:5777
tcp_urg+0x15c/0x450 net/ipv4/tcp_input.c:5818
tcp_rcv_established+0xfac/0x2020 net/ipv4/tcp_input.c:6167
tcp_v6_do_rcv+0xa09/0x1300 net/ipv6/tcp_ipv6.c:1644
sk_backlog_rcv include/net/sock.h:1106 [inline]
__release_sock+0x1c8/0x350 net/core/sock.c:2984
release_sock+0x61/0x1f0 net/core/sock.c:3550
tcp_sendmsg+0x3a/0x50 net/ipv4/tcp.c:1343
sock_sendmsg_nosec net/socket.c:730 [inline]
__sock_sendmsg+0xef/0x270 net/socket.c:745
__sys_sendto+0x3a4/0x4f0 net/socket.c:2191
__do_sys_sendto net/socket.c:2203 [inline]
__se_sys_sendto net/socket.c:2199 [inline]
__x64_sys_sendto+0xde/0x100 net/socket.c:2199
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xf5/0x240 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f93be67de69
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:00007f93bf3490c8 EFLAGS: 00000246 ORIG_RAX: 000000000000002c
RAX: ffffffffffffffda RBX: 00007f93be7abf80 RCX: 00007f93be67de69
RDX: 0000000000000002 RSI: 0000000020000080 RDI: 0000000000000005
RBP: 00007f93be6ca47a R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000001 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000000b R14: 00007f93be7abf80 R15: 00007ffd71560168
</TASK>
------------[ cut here ]------------
raw_local_irq_restore() called with IRQs enabled
WARNING: CPU: 1 PID: 5495 at kernel/locking/irqflag-debug.c:10 warn_bogus_irq_restore+0x29/0x40 kernel/locking/irqflag-debug.c:10
Modules linked in:
CPU: 1 PID: 5495 Comm: syz-executor.0 Not tainted 6.9.0-rc4-syzkaller-00214-g13a2e429f644-dirty #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024
RIP: 0010:warn_bogus_irq_restore+0x29/0x40 kernel/locking/irqflag-debug.c:10
Code: 90 f3 0f 1e fa 90 80 3d 6f 98 0f 04 00 74 06 90 c3 cc cc cc cc c6 05 60 98 0f 04 01 90 48 c7 c7 a0 b0 ca 8b e8 c8 be d3 f5 90 <0f> 0b 90 90 90 c3 cc cc cc cc 66 2e 0f 1f 84 00 00 00 00 00 0f 1f
RSP: 0018:ffffc90004a37798 EFLAGS: 00010246
RAX: 7bd43406166ed700 RBX: 1ffff92000946ef8 RCX: ffff88802ab70000
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc90004a37828 R08: ffffffff81588072 R09: fffffbfff1c39b48
R10: dffffc0000000000 R11: fffffbfff1c39b48 R12: dffffc0000000000
R13: 1ffff92000946ef4 R14: ffffc90004a377c0 R15: 0000000000000246
FS: 00007f93bf3496c0(0000) GS:ffff8880b9500000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000020b63fe4 CR3: 000000002a1e0000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
<TASK>
__raw_read_unlock_irqrestore include/linux/rwlock_api_smp.h:241 [inline]
_raw_read_unlock_irqrestore+0x120/0x140 kernel/locking/spinlock.c:268
send_sigurg+0x36a/0x3c0 fs/fcntl.c:858
sk_send_sigurg+0x6e/0xc0 net/core/sock.c:3412
tcp_check_urg+0x207/0x740 net/ipv4/tcp_input.c:5777
tcp_urg+0x15c/0x450 net/ipv4/tcp_input.c:5818
tcp_rcv_established+0xfac/0x2020 net/ipv4/tcp_input.c:6167
tcp_v6_do_rcv+0xa09/0x1300 net/ipv6/tcp_ipv6.c:1644
sk_backlog_rcv include/net/sock.h:1106 [inline]
__release_sock+0x1c8/0x350 net/core/sock.c:2984
release_sock+0x61/0x1f0 net/core/sock.c:3550
tcp_sendmsg+0x3a/0x50 net/ipv4/tcp.c:1343
sock_sendmsg_nosec net/socket.c:730 [inline]
__sock_sendmsg+0xef/0x270 net/socket.c:745
__sys_sendto+0x3a4/0x4f0 net/socket.c:2191
__do_sys_sendto net/socket.c:2203 [inline]
__se_sys_sendto net/socket.c:2199 [inline]
__x64_sys_sendto+0xde/0x100 net/socket.c:2199
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xf5/0x240 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f93be67de69
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:00007f93bf3490c8 EFLAGS: 00000246 ORIG_RAX: 000000000000002c
RAX: ffffffffffffffda RBX: 00007f93be7abf80 RCX: 00007f93be67de69
RDX: 0000000000000002 RSI: 0000000020000080 RDI: 0000000000000005
RBP: 00007f93be6ca47a R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000001 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000000b R14: 00007f93be7abf80 R15: 00007ffd71560168
</TASK>
Tested on:
commit: 13a2e429 Merge tag 'perf-tools-fixes-for-v6.9-2024-04-..
git tree: upstream
console output: https://syzkaller.appspot.com/x/log.txt?x=15316e10980000
kernel config: https://syzkaller.appspot.com/x/.config?x=c6e826cf3c9c6ffc
dashboard link: https://syzkaller.appspot.com/bug?extid=d4c06e848a1c1f9f726f
compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40
patch: https://syzkaller.appspot.com/x/patch.diff?x=11fa4e07180000
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