=====================================================
WARNING: SOFTIRQ-safe -> SOFTIRQ-unsafe lock order detected
5.19.0-rc3-syzkaller-00027-g78ca55889a54 #0 Not tainted
-----------------------------------------------------
syz-executor.1/10388 [HC0[0]:SC0[0]:HE0:SE1] is trying to acquire:
ffff888020492360 (&new->fa_lock){....}-{2:2}, at: kill_fasync_rcu fs/fcntl.c:995 [inline]
ffff888020492360 (&new->fa_lock){....}-{2:2}, at: kill_fasync fs/fcntl.c:1016 [inline]
ffff888020492360 (&new->fa_lock){....}-{2:2}, at: kill_fasync+0x136/0x470 fs/fcntl.c:1009
and this task is already holding:
ffff88802602c6f8 (&card->ctl_files_rwlock){...-}-{2:2}, at: snd_ctl_notify.part.0+0x36/0x560 sound/core/control.c:159
which would create a new lock dependency:
(&card->ctl_files_rwlock){...-}-{2:2} -> (&new->fa_lock){....}-{2:2}
but this new dependency connects a SOFTIRQ-irq-safe lock:
(&group->lock){..-.}-{2:2}
... which became SOFTIRQ-irq-safe at:
lock_acquire kernel/locking/lockdep.c:5665 [inline]
lock_acquire+0x1ab/0x570 kernel/locking/lockdep.c:5630
__raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline]
_raw_spin_lock_irqsave+0x39/0x50 kernel/locking/spinlock.c:162
_snd_pcm_stream_lock_irqsave+0x9f/0xd0 sound/core/pcm_native.c:170
snd_pcm_period_elapsed+0x1d/0x50 sound/core/pcm_lib.c:1848
loopback_jiffies_timer_function+0x1c4/0x240 sound/drivers/aloop.c:668
call_timer_fn+0x1a5/0x6b0 kernel/time/timer.c:1474
expire_timers kernel/time/timer.c:1519 [inline]
__run_timers.part.0+0x679/0xa80 kernel/time/timer.c:1790
__run_timers kernel/time/timer.c:1768 [inline]
run_timer_softirq+0xb3/0x1d0 kernel/time/timer.c:1803
__do_softirq+0x29b/0x9c2 kernel/softirq.c:571
invoke_softirq kernel/softirq.c:445 [inline]
__irq_exit_rcu+0x123/0x180 kernel/softirq.c:650
irq_exit_rcu+0x5/0x20 kernel/softirq.c:662
sysvec_apic_timer_interrupt+0x93/0xc0 arch/x86/kernel/apic/apic.c:1106
asm_sysvec_apic_timer_interrupt+0x1b/0x20 arch/x86/include/asm/idtentry.h:649
__sanitizer_cov_trace_pc+0x0/0x60 kernel/kcov.c:519
queue_work_on+0xb3/0x110 kernel/workqueue.c:1550
queue_work include/linux/workqueue.h:502 [inline]
snd_virmidi_output_trigger+0xe7/0x130 sound/core/seq/seq_virmidi.c:171
snd_rawmidi_output_trigger sound/core/rawmidi.c:186 [inline]
snd_rawmidi_output_trigger sound/core/rawmidi.c:182 [inline]
snd_rawmidi_kernel_write1+0x548/0x870 sound/core/rawmidi.c:1502
snd_rawmidi_write+0x273/0xb90 sound/core/rawmidi.c:1555
vfs_write+0x269/0xac0 fs/read_write.c:589
ksys_write+0x1e8/0x250 fs/read_write.c:644
do_syscall_32_irqs_on arch/x86/entry/common.c:112 [inline]
__do_fast_syscall_32+0x65/0xf0 arch/x86/entry/common.c:178
do_fast_syscall_32+0x2f/0x70 arch/x86/entry/common.c:203
entry_SYSENTER_compat_after_hwframe+0x53/0x62
to a SOFTIRQ-irq-unsafe lock:
(tasklist_lock){.+.+}-{2:2}
... which became SOFTIRQ-irq-unsafe at:
...
lock_acquire kernel/locking/lockdep.c:5665 [inline]
lock_acquire+0x1ab/0x570 kernel/locking/lockdep.c:5630
__raw_read_lock include/linux/rwlock_api_smp.h:150 [inline]
_raw_read_lock+0x5b/0x70 kernel/locking/spinlock.c:228
do_wait+0x284/0xce0 kernel/exit.c:1508
kernel_wait+0x9c/0x150 kernel/exit.c:1698
call_usermodehelper_exec_sync kernel/umh.c:139 [inline]
call_usermodehelper_exec_work+0xf5/0x180 kernel/umh.c:166
process_one_work+0x996/0x1610 kernel/workqueue.c:2289
worker_thread+0x665/0x1080 kernel/workqueue.c:2436
kthread+0x2e9/0x3a0 kernel/kthread.c:376
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:302
other info that might help us debug this:
Chain exists of:
&group->lock --> &card->ctl_files_rwlock --> tasklist_lock
Possible interrupt unsafe locking scenario:
CPU0 CPU1
---- ----
lock(tasklist_lock);
local_irq_disable();
lock(&group->lock);
lock(&card->ctl_files_rwlock);
<Interrupt>
lock(&group->lock);
*** DEADLOCK ***
3 locks held by syz-executor.1/10388:
#0: ffff88802602c6b8 (&card->controls_rwsem){++++}-{3:3}, at: snd_ctl_elem_add+0x36d/0x1220 sound/core/control.c:1532
#1: ffff88802602c6f8 (&card->ctl_files_rwlock){...-}-{2:2}, at: snd_ctl_notify.part.0+0x36/0x560 sound/core/control.c:159
#2: ffffffff8bd86ba0 (rcu_read_lock){....}-{1:2}, at: kill_fasync+0x41/0x470 fs/fcntl.c:1014
the dependencies between SOFTIRQ-irq-safe lock and the holding lock:
-> (&group->lock){..-.}-{2:2} {
IN-SOFTIRQ-W at:
lock_acquire kernel/locking/lockdep.c:5665 [inline]
lock_acquire+0x1ab/0x570 kernel/locking/lockdep.c:5630
__raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline]
_raw_spin_lock_irqsave+0x39/0x50 kernel/locking/spinlock.c:162
_snd_pcm_stream_lock_irqsave+0x9f/0xd0 sound/core/pcm_native.c:170
snd_pcm_period_elapsed+0x1d/0x50 sound/core/pcm_lib.c:1848
loopback_jiffies_timer_function+0x1c4/0x240 sound/drivers/aloop.c:668
call_timer_fn+0x1a5/0x6b0 kernel/time/timer.c:1474
expire_timers kernel/time/timer.c:1519 [inline]
__run_timers.part.0+0x679/0xa80 kernel/time/timer.c:1790
__run_timers kernel/time/timer.c:1768 [inline]
run_timer_softirq+0xb3/0x1d0 kernel/time/timer.c:1803
__do_softirq+0x29b/0x9c2 kernel/softirq.c:571
invoke_softirq kernel/softirq.c:445 [inline]
__irq_exit_rcu+0x123/0x180 kernel/softirq.c:650
irq_exit_rcu+0x5/0x20 kernel/softirq.c:662
sysvec_apic_timer_interrupt+0x93/0xc0 arch/x86/kernel/apic/apic.c:1106
asm_sysvec_apic_timer_interrupt+0x1b/0x20 arch/x86/include/asm/idtentry.h:649
__sanitizer_cov_trace_pc+0x0/0x60 kernel/kcov.c:519
queue_work_on+0xb3/0x110 kernel/workqueue.c:1550
queue_work include/linux/workqueue.h:502 [inline]
snd_virmidi_output_trigger+0xe7/0x130 sound/core/seq/seq_virmidi.c:171
snd_rawmidi_output_trigger sound/core/rawmidi.c:186 [inline]
snd_rawmidi_output_trigger sound/core/rawmidi.c:182 [inline]
snd_rawmidi_kernel_write1+0x548/0x870 sound/core/rawmidi.c:1502
snd_rawmidi_write+0x273/0xb90 sound/core/rawmidi.c:1555
vfs_write+0x269/0xac0 fs/read_write.c:589
ksys_write+0x1e8/0x250 fs/read_write.c:644
do_syscall_32_irqs_on arch/x86/entry/common.c:112 [inline]
__do_fast_syscall_32+0x65/0xf0 arch/x86/entry/common.c:178
do_fast_syscall_32+0x2f/0x70 arch/x86/entry/common.c:203
entry_SYSENTER_compat_after_hwframe+0x53/0x62
INITIAL USE at:
lock_acquire kernel/locking/lockdep.c:5665 [inline]
lock_acquire+0x1ab/0x570 kernel/locking/lockdep.c:5630
__raw_spin_lock_irq include/linux/spinlock_api_smp.h:119 [inline]
_raw_spin_lock_irq+0x32/0x50 kernel/locking/spinlock.c:170
spin_lock_irq include/linux/spinlock.h:374 [inline]
snd_pcm_group_lock_irq sound/core/pcm_native.c:97 [inline]
snd_pcm_stream_lock_irq sound/core/pcm_native.c:136 [inline]
snd_pcm_hw_params+0x14b/0x19f0 sound/core/pcm_native.c:726
snd_pcm_kernel_ioctl+0x164/0x310 sound/core/pcm_native.c:3435
snd_pcm_oss_change_params_locked+0x14e2/0x3a70 sound/core/oss/pcm_oss.c:976
snd_pcm_oss_make_ready_locked+0xb3/0x130 sound/core/oss/pcm_oss.c:1198
snd_pcm_oss_write1 sound/core/oss/pcm_oss.c:1416 [inline]
snd_pcm_oss_write+0x4ac/0x9c0 sound/core/oss/pcm_oss.c:2811
vfs_write+0x269/0xac0 fs/read_write.c:589
ksys_write+0x127/0x250 fs/read_write.c:644
do_syscall_32_irqs_on arch/x86/entry/common.c:112 [inline]
__do_fast_syscall_32+0x65/0xf0 arch/x86/entry/common.c:178
do_fast_syscall_32+0x2f/0x70 arch/x86/entry/common.c:203
entry_SYSENTER_compat_after_hwframe+0x53/0x62
}
... key at: [<ffffffff912c2140>] __key.8+0x0/0x40
-> (&card->ctl_files_rwlock){...-}-{2:2} {
IN-SOFTIRQ-R at:
lock_acquire kernel/locking/lockdep.c:5665 [inline]
lock_acquire+0x1ab/0x570 kernel/locking/lockdep.c:5630
__raw_read_lock_irqsave include/linux/rwlock_api_smp.h:160 [inline]
_raw_read_lock_irqsave+0x45/0x90 kernel/locking/spinlock.c:236
snd_ctl_notify.part.0+0x36/0x560 sound/core/control.c:159
snd_ctl_notify+0x8f/0xb0 sound/core/control.c:187
loopback_active_notify sound/drivers/aloop.c:372 [inline]
loopback_trigger+0x4af/0x1b10 sound/drivers/aloop.c:426
snd_pcm_do_stop sound/core/pcm_native.c:1499 [inline]
snd_pcm_do_stop+0x17c/0x230 sound/core/pcm_native.c:1494
snd_pcm_action_single sound/core/pcm_native.c:1281 [inline]
snd_pcm_drain_done+0xb9/0x120 sound/core/pcm_native.c:1550
snd_pcm_update_state+0x43b/0x540 sound/core/pcm_lib.c:191
snd_pcm_update_hw_ptr0+0xa75/0x1a50 sound/core/pcm_lib.c:465
snd_pcm_period_elapsed_under_stream_lock+0x15a/0x230 sound/core/pcm_lib.c:1817
snd_pcm_period_elapsed+0x28/0x50 sound/core/pcm_lib.c:1849
loopback_jiffies_timer_function+0x1c4/0x240 sound/drivers/aloop.c:668
call_timer_fn+0x1a5/0x6b0 kernel/time/timer.c:1474
expire_timers kernel/time/timer.c:1519 [inline]
__run_timers.part.0+0x679/0xa80 kernel/time/timer.c:1790
__run_timers kernel/time/timer.c:1768 [inline]
run_timer_softirq+0xb3/0x1d0 kernel/time/timer.c:1803
__do_softirq+0x29b/0x9c2 kernel/softirq.c:571
invoke_softirq kernel/softirq.c:445 [inline]
__irq_exit_rcu+0x123/0x180 kernel/softirq.c:650
irq_exit_rcu+0x5/0x20 kernel/softirq.c:662
sysvec_apic_timer_interrupt+0x93/0xc0 arch/x86/kernel/apic/apic.c:1106
asm_sysvec_apic_timer_interrupt+0x1b/0x20 arch/x86/include/asm/idtentry.h:649
__sanitizer_cov_trace_pc+0x0/0x60 kernel/kcov.c:519
queue_work_on+0xb3/0x110 kernel/workqueue.c:1550
queue_work include/linux/workqueue.h:502 [inline]
snd_virmidi_output_trigger+0xe7/0x130 sound/core/seq/seq_virmidi.c:171
snd_rawmidi_output_trigger sound/core/rawmidi.c:186 [inline]
snd_rawmidi_output_trigger sound/core/rawmidi.c:182 [inline]
snd_rawmidi_kernel_write1+0x548/0x870 sound/core/rawmidi.c:1502
snd_rawmidi_write+0x273/0xb90 sound/core/rawmidi.c:1555
vfs_write+0x269/0xac0 fs/read_write.c:589
ksys_write+0x1e8/0x250 fs/read_write.c:644
do_syscall_32_irqs_on arch/x86/entry/common.c:112 [inline]
__do_fast_syscall_32+0x65/0xf0 arch/x86/entry/common.c:178
do_fast_syscall_32+0x2f/0x70 arch/x86/entry/common.c:203
entry_SYSENTER_compat_after_hwframe+0x53/0x62
INITIAL USE at:
lock_acquire kernel/locking/lockdep.c:5665 [inline]
lock_acquire+0x1ab/0x570 kernel/locking/lockdep.c:5630
__raw_write_lock_irqsave include/linux/rwlock_api_smp.h:186 [inline]
_raw_write_lock_irqsave+0x39/0x50 kernel/locking/spinlock.c:318
snd_ctl_open sound/core/control.c:80 [inline]
snd_ctl_open+0x3a1/0x5c0 sound/core/control.c:42
snd_open+0x21f/0x460 sound/core/sound.c:169
chrdev_open+0x266/0x770 fs/char_dev.c:414
do_dentry_open+0x4a1/0x11f0 fs/open.c:848
do_open fs/namei.c:3520 [inline]
path_openat+0x1c71/0x2910 fs/namei.c:3653
do_filp_open+0x1aa/0x400 fs/namei.c:3680
do_sys_openat2+0x16d/0x4c0 fs/open.c:1278
do_sys_open fs/open.c:1294 [inline]
__do_compat_sys_openat fs/open.c:1354 [inline]
__se_compat_sys_openat fs/open.c:1352 [inline]
__ia32_compat_sys_openat+0x13f/0x1f0 fs/open.c:1352
do_syscall_32_irqs_on arch/x86/entry/common.c:112 [inline]
__do_fast_syscall_32+0x65/0xf0 arch/x86/entry/common.c:178
do_fast_syscall_32+0x2f/0x70 arch/x86/entry/common.c:203
entry_SYSENTER_compat_after_hwframe+0x53/0x62
INITIAL READ USE at:
lock_acquire kernel/locking/lockdep.c:5665 [inline]
lock_acquire+0x1ab/0x570 kernel/locking/lockdep.c:5630
__raw_read_lock_irqsave include/linux/rwlock_api_smp.h:160 [inline]
_raw_read_lock_irqsave+0x70/0x90 kernel/locking/spinlock.c:236
snd_ctl_notify.part.0+0x36/0x560 sound/core/control.c:159
snd_ctl_notify sound/core/control.c:213 [inline]
snd_ctl_notify_one+0x234/0x280 sound/core/control.c:208
__snd_ctl_add_replace+0x599/0x760 sound/core/control.c:412
snd_ctl_add_replace+0x76/0x130 sound/core/control.c:429
snd_card_dummy_new_mixer sound/drivers/dummy.c:884 [inline]
snd_dummy_probe+0xbb9/0x10a0 sound/drivers/dummy.c:1079
platform_probe+0xfc/0x1f0 drivers/base/platform.c:1400
call_driver_probe drivers/base/dd.c:555 [inline]
really_probe+0x23e/0xb90 drivers/base/dd.c:634
__driver_probe_device+0x338/0x4d0 drivers/base/dd.c:764
driver_probe_device+0x4c/0x1a0 drivers/base/dd.c:794
__device_attach_driver+0x20b/0x2f0 drivers/base/dd.c:917
bus_for_each_drv+0x15f/0x1e0 drivers/base/bus.c:427
__device_attach+0x1e4/0x530 drivers/base/dd.c:989
bus_probe_device+0x1e4/0x290 drivers/base/bus.c:487
device_add+0xbda/0x1ea0 drivers/base/core.c:3417
platform_device_add+0x363/0x820 drivers/base/platform.c:717
platform_device_register_full+0x3ed/0x550 drivers/base/platform.c:844
platform_device_register_resndata include/linux/platform_device.h:141 [inline]
platform_device_register_simple include/linux/platform_device.h:170 [inline]
alsa_card_dummy_init+0x1e0/0x309 sound/drivers/dummy.c:1157
do_one_initcall+0x103/0x650 init/main.c:1295
do_initcall_level init/main.c:1368 [inline]
do_initcalls init/main.c:1384 [inline]
do_basic_setup init/main.c:1403 [inline]
kernel_init_freeable+0x6b1/0x73a init/main.c:1610
kernel_init+0x1a/0x1d0 init/main.c:1499
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:302
}
... key at: [<ffffffff912bf8c0>] __key.12+0x0/0x40
... acquired at:
__raw_read_lock_irqsave include/linux/rwlock_api_smp.h:160 [inline]
_raw_read_lock_irqsave+0x70/0x90 kernel/locking/spinlock.c:236
snd_ctl_notify.part.0+0x36/0x560 sound/core/control.c:159
snd_ctl_notify+0x8f/0xb0 sound/core/control.c:187
loopback_check_format sound/drivers/aloop.c:357 [inline]
loopback_trigger+0x1177/0x1b10 sound/drivers/aloop.c:386
snd_pcm_do_start sound/core/pcm_native.c:1429 [inline]
snd_pcm_do_start+0xb1/0xf0 sound/core/pcm_native.c:1424
snd_pcm_action_single+0x75/0x130 sound/core/pcm_native.c:1281
snd_pcm_action+0x6e/0x90 sound/core/pcm_native.c:1364
__snd_pcm_lib_xfer+0x14d0/0x1e10 sound/core/pcm_lib.c:2308
snd_pcm_oss_write3+0x103/0x250 sound/core/oss/pcm_oss.c:1253
io_playback_transfer+0x27e/0x330 sound/core/oss/io.c:47
snd_pcm_plug_write_transfer+0x2cd/0x3f0 sound/core/oss/pcm_plugin.c:630
snd_pcm_oss_write2+0x245/0x3f0 sound/core/oss/pcm_oss.c:1385
snd_pcm_oss_sync1+0x187/0x440 sound/core/oss/pcm_oss.c:1627
snd_pcm_oss_sync+0x638/0x800 sound/core/oss/pcm_oss.c:1704
snd_pcm_oss_ioctl+0x208c/0x3430 sound/core/oss/pcm_oss.c:2634
__do_compat_sys_ioctl+0x1c7/0x290 fs/ioctl.c:968
do_syscall_32_irqs_on arch/x86/entry/common.c:112 [inline]
__do_fast_syscall_32+0x65/0xf0 arch/x86/entry/common.c:178
do_fast_syscall_32+0x2f/0x70 arch/x86/entry/common.c:203
entry_SYSENTER_compat_after_hwframe+0x53/0x62
the dependencies between the lock to be acquired
and SOFTIRQ-irq-unsafe lock:
-> (tasklist_lock){.+.+}-{2:2} {
HARDIRQ-ON-R at:
lock_acquire kernel/locking/lockdep.c:5665 [inline]
lock_acquire+0x1ab/0x570 kernel/locking/lockdep.c:5630
__raw_read_lock include/linux/rwlock_api_smp.h:150 [inline]
_raw_read_lock+0x5b/0x70 kernel/locking/spinlock.c:228
do_wait+0x284/0xce0 kernel/exit.c:1508
kernel_wait+0x9c/0x150 kernel/exit.c:1698
call_usermodehelper_exec_sync kernel/umh.c:139 [inline]
call_usermodehelper_exec_work+0xf5/0x180 kernel/umh.c:166
process_one_work+0x996/0x1610 kernel/workqueue.c:2289
worker_thread+0x665/0x1080 kernel/workqueue.c:2436
kthread+0x2e9/0x3a0 kernel/kthread.c:376
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:302
SOFTIRQ-ON-R at:
lock_acquire kernel/locking/lockdep.c:5665 [inline]
lock_acquire+0x1ab/0x570 kernel/locking/lockdep.c:5630
__raw_read_lock include/linux/rwlock_api_smp.h:150 [inline]
_raw_read_lock+0x5b/0x70 kernel/locking/spinlock.c:228
do_wait+0x284/0xce0 kernel/exit.c:1508
kernel_wait+0x9c/0x150 kernel/exit.c:1698
call_usermodehelper_exec_sync kernel/umh.c:139 [inline]
call_usermodehelper_exec_work+0xf5/0x180 kernel/umh.c:166
process_one_work+0x996/0x1610 kernel/workqueue.c:2289
worker_thread+0x665/0x1080 kernel/workqueue.c:2436
kthread+0x2e9/0x3a0 kernel/kthread.c:376
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:302
INITIAL USE at:
lock_acquire kernel/locking/lockdep.c:5665 [inline]
lock_acquire+0x1ab/0x570 kernel/locking/lockdep.c:5630
__raw_write_lock_irq include/linux/rwlock_api_smp.h:195 [inline]
_raw_write_lock_irq+0x32/0x50 kernel/locking/spinlock.c:326
copy_process+0x445e/0x7020 kernel/fork.c:2374
kernel_clone+0xe7/0xab0 kernel/fork.c:2655
user_mode_thread+0xad/0xe0 kernel/fork.c:2724
rest_init+0x23/0x270 init/main.c:691
arch_call_rest_init+0xf/0x14 init/main.c:882
start_kernel+0x46e/0x48f init/main.c:1137
secondary_startup_64_no_verify+0xce/0xdb
INITIAL READ USE at:
lock_acquire kernel/locking/lockdep.c:5665 [inline]
lock_acquire+0x1ab/0x570 kernel/locking/lockdep.c:5630
__raw_read_lock include/linux/rwlock_api_smp.h:150 [inline]
_raw_read_lock+0x5b/0x70 kernel/locking/spinlock.c:228
do_wait+0x284/0xce0 kernel/exit.c:1508
kernel_wait+0x9c/0x150 kernel/exit.c:1698
call_usermodehelper_exec_sync kernel/umh.c:139 [inline]
call_usermodehelper_exec_work+0xf5/0x180 kernel/umh.c:166
process_one_work+0x996/0x1610 kernel/workqueue.c:2289
worker_thread+0x665/0x1080 kernel/workqueue.c:2436
kthread+0x2e9/0x3a0 kernel/kthread.c:376
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:302
}
... key at: [<ffffffff8ba0a098>] tasklist_lock+0x18/0x40
... acquired at:
__raw_read_lock include/linux/rwlock_api_smp.h:150 [inline]
_raw_read_lock+0x5b/0x70 kernel/locking/spinlock.c:228
send_sigio+0xab/0x380 fs/fcntl.c:791
dnotify_handle_event+0x148/0x280 fs/notify/dnotify/dnotify.c:115
fsnotify_handle_inode_event.isra.0+0x22e/0x370 fs/notify/fsnotify.c:264
fsnotify_handle_event fs/notify/fsnotify.c:316 [inline]
send_to_group fs/notify/fsnotify.c:362 [inline]
fsnotify+0xec5/0x13a0 fs/notify/fsnotify.c:567
fsnotify_name include/linux/fsnotify.h:36 [inline]
fsnotify_name include/linux/fsnotify.h:29 [inline]
fsnotify_dirent include/linux/fsnotify.h:42 [inline]
fsnotify_create include/linux/fsnotify.h:207 [inline]
vfs_symlink fs/namei.c:4343 [inline]
vfs_symlink+0x242/0x2c0 fs/namei.c:4326
do_symlinkat+0x261/0x2e0 fs/namei.c:4370
__do_sys_symlinkat fs/namei.c:4387 [inline]
__se_sys_symlinkat fs/namei.c:4384 [inline]
__ia32_sys_symlinkat+0x93/0xc0 fs/namei.c:4384
do_syscall_32_irqs_on arch/x86/entry/common.c:112 [inline]
__do_fast_syscall_32+0x65/0xf0 arch/x86/entry/common.c:178
do_fast_syscall_32+0x2f/0x70 arch/x86/entry/common.c:203
entry_SYSENTER_compat_after_hwframe+0x53/0x62
-> (&f->f_owner.lock){...-}-{2:2} {
IN-SOFTIRQ-R at:
lock_acquire kernel/locking/lockdep.c:5665 [inline]
lock_acquire+0x1ab/0x570 kernel/locking/lockdep.c:5630
__raw_read_lock_irqsave include/linux/rwlock_api_smp.h:160 [inline]
_raw_read_lock_irqsave+0x45/0x90 kernel/locking/spinlock.c:236
send_sigurg+0x1e/0xaf0 fs/fcntl.c:816
sk_send_sigurg+0x76/0x310 net/core/sock.c:3275
tcp_check_urg net/ipv4/tcp_input.c:5596 [inline]
tcp_urg+0x38e/0xb40 net/ipv4/tcp_input.c:5637
tcp_rcv_state_process+0x1733/0x4eb0 net/ipv4/tcp_input.c:6630
tcp_v6_do_rcv+0x3fc/0x13c0 net/ipv6/tcp_ipv6.c:1501
tcp_v6_rcv+0x2d9b/0x37f0 net/ipv6/tcp_ipv6.c:1735
ip6_protocol_deliver_rcu+0x2f9/0x1950 net/ipv6/ip6_input.c:436
ip6_input_finish+0x14c/0x2c0 net/ipv6/ip6_input.c:481
NF_HOOK include/linux/netfilter.h:307 [inline]
NF_HOOK include/linux/netfilter.h:301 [inline]
ip6_input+0x9c/0xd0 net/ipv6/ip6_input.c:490
dst_input include/net/dst.h:461 [inline]
ip6_rcv_finish net/ipv6/ip6_input.c:76 [inline]
NF_HOOK include/linux/netfilter.h:307 [inline]
NF_HOOK include/linux/netfilter.h:301 [inline]
ipv6_rcv+0x27f/0x3b0 net/ipv6/ip6_input.c:306
__netif_receive_skb_one_core+0x114/0x180 net/core/dev.c:5478
__netif_receive_skb+0x24/0x1b0 net/core/dev.c:5592
process_backlog+0x3a0/0x7c0 net/core/dev.c:5920
__napi_poll+0xb3/0x6e0 net/core/dev.c:6486
napi_poll net/core/dev.c:6553 [inline]
net_rx_action+0x9c1/0xd90 net/core/dev.c:6664
__do_softirq+0x29b/0x9c2 kernel/softirq.c:571
run_ksoftirqd kernel/softirq.c:934 [inline]
run_ksoftirqd+0x2d/0x60 kernel/softirq.c:926
smpboot_thread_fn+0x645/0x9c0 kernel/smpboot.c:164
kthread+0x2e9/0x3a0 kernel/kthread.c:376
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:302
INITIAL USE at:
lock_acquire kernel/locking/lockdep.c:5665 [inline]
lock_acquire+0x1ab/0x570 kernel/locking/lockdep.c:5630
__raw_write_lock_irq include/linux/rwlock_api_smp.h:195 [inline]
_raw_write_lock_irq+0x32/0x50 kernel/locking/spinlock.c:326
f_modown+0x2a/0x390 fs/fcntl.c:90
__f_setown fs/fcntl.c:109 [inline]
f_setown+0xd7/0x230 fs/fcntl.c:137
do_fcntl+0x6f1/0x1040 fs/fcntl.c:376
do_compat_fcntl64+0x2c8/0x600 fs/fcntl.c:657
do_syscall_32_irqs_on arch/x86/entry/common.c:112 [inline]
__do_fast_syscall_32+0x65/0xf0 arch/x86/entry/common.c:178
do_fast_syscall_32+0x2f/0x70 arch/x86/entry/common.c:203
entry_SYSENTER_compat_after_hwframe+0x53/0x62
INITIAL READ USE at:
lock_acquire kernel/locking/lockdep.c:5665 [inline]
lock_acquire+0x1ab/0x570 kernel/locking/lockdep.c:5630
__raw_read_lock_irqsave include/linux/rwlock_api_smp.h:160 [inline]
_raw_read_lock_irqsave+0x70/0x90 kernel/locking/spinlock.c:236
send_sigio+0x24/0x380 fs/fcntl.c:777
kill_fasync_rcu fs/fcntl.c:1002 [inline]
kill_fasync fs/fcntl.c:1016 [inline]
kill_fasync+0x1f8/0x470 fs/fcntl.c:1009
sock_wake_async+0xd2/0x160 net/socket.c:1419
sk_wake_async include/net/sock.h:2466 [inline]
sk_wake_async include/net/sock.h:2462 [inline]
tcp_rcv_state_process+0x3ee9/0x4eb0 net/ipv4/tcp_input.c:6541
tcp_v6_do_rcv+0x3fc/0x13c0 net/ipv6/tcp_ipv6.c:1501
sk_backlog_rcv include/net/sock.h:1047 [inline]
__release_sock+0x134/0x3b0 net/core/sock.c:2849
release_sock+0x54/0x1b0 net/core/sock.c:3404
inet_wait_for_connect net/ipv4/af_inet.c:593 [inline]
__inet_stream_connect+0x5db/0xed0 net/ipv4/af_inet.c:685
tcp_sendmsg_fastopen net/ipv4/tcp.c:1178 [inline]
tcp_sendmsg_locked+0x1e9c/0x2fc0 net/ipv4/tcp.c:1220
tcp_sendmsg+0x2b/0x40 net/ipv4/tcp.c:1448
inet6_sendmsg+0x99/0xe0 net/ipv6/af_inet6.c:652
sock_sendmsg_nosec net/socket.c:714 [inline]
sock_sendmsg+0xcf/0x120 net/socket.c:734
__sys_sendto+0x21a/0x320 net/socket.c:2119
__do_sys_sendto net/socket.c:2131 [inline]
__se_sys_sendto net/socket.c:2127 [inline]
__ia32_sys_sendto+0xdb/0x1b0 net/socket.c:2127
do_syscall_32_irqs_on arch/x86/entry/common.c:112 [inline]
__do_fast_syscall_32+0x65/0xf0 arch/x86/entry/common.c:178
do_fast_syscall_32+0x2f/0x70 arch/x86/entry/common.c:203
entry_SYSENTER_compat_after_hwframe+0x53/0x62
}
... key at: [<ffffffff90fc2840>] __key.5+0x0/0x40
... acquired at:
__raw_read_lock_irqsave include/linux/rwlock_api_smp.h:160 [inline]
_raw_read_lock_irqsave+0x70/0x90 kernel/locking/spinlock.c:236
send_sigio+0x24/0x380 fs/fcntl.c:777
kill_fasync_rcu fs/fcntl.c:1002 [inline]
kill_fasync fs/fcntl.c:1016 [inline]
kill_fasync+0x1f8/0x470 fs/fcntl.c:1009
sock_wake_async+0xd2/0x160 net/socket.c:1419
sk_wake_async include/net/sock.h:2466 [inline]
sk_wake_async include/net/sock.h:2462 [inline]
tcp_rcv_state_process+0x3ee9/0x4eb0 net/ipv4/tcp_input.c:6541
tcp_v6_do_rcv+0x3fc/0x13c0 net/ipv6/tcp_ipv6.c:1501
sk_backlog_rcv include/net/sock.h:1047 [inline]
__release_sock+0x134/0x3b0 net/core/sock.c:2849
release_sock+0x54/0x1b0 net/core/sock.c:3404
inet_wait_for_connect net/ipv4/af_inet.c:593 [inline]
__inet_stream_connect+0x5db/0xed0 net/ipv4/af_inet.c:685
tcp_sendmsg_fastopen net/ipv4/tcp.c:1178 [inline]
tcp_sendmsg_locked+0x1e9c/0x2fc0 net/ipv4/tcp.c:1220
tcp_sendmsg+0x2b/0x40 net/ipv4/tcp.c:1448
inet6_sendmsg+0x99/0xe0 net/ipv6/af_inet6.c:652
sock_sendmsg_nosec net/socket.c:714 [inline]
sock_sendmsg+0xcf/0x120 net/socket.c:734
__sys_sendto+0x21a/0x320 net/socket.c:2119
__do_sys_sendto net/socket.c:2131 [inline]
__se_sys_sendto net/socket.c:2127 [inline]
__ia32_sys_sendto+0xdb/0x1b0 net/socket.c:2127
do_syscall_32_irqs_on arch/x86/entry/common.c:112 [inline]
__do_fast_syscall_32+0x65/0xf0 arch/x86/entry/common.c:178
do_fast_syscall_32+0x2f/0x70 arch/x86/entry/common.c:203
entry_SYSENTER_compat_after_hwframe+0x53/0x62
-> (&new->fa_lock){....}-{2:2} {
INITIAL USE at:
lock_acquire kernel/locking/lockdep.c:5665 [inline]
lock_acquire+0x1ab/0x570 kernel/locking/lockdep.c:5630
__raw_write_lock_irq include/linux/rwlock_api_smp.h:195 [inline]
_raw_write_lock_irq+0x32/0x50 kernel/locking/spinlock.c:326
fasync_remove_entry+0xb6/0x1e0 fs/fcntl.c:872
fasync_helper+0x9e/0xb0 fs/fcntl.c:975
sock_fasync+0x94/0x140 net/socket.c:1390
__fput+0x834/0x9d0 fs/file_table.c:314
task_work_run+0xdd/0x1a0 kernel/task_work.c:177
resume_user_mode_work include/linux/resume_user_mode.h:49 [inline]
exit_to_user_mode_loop kernel/entry/common.c:169 [inline]
exit_to_user_mode_prepare+0x23c/0x250 kernel/entry/common.c:201
__syscall_exit_to_user_mode_work kernel/entry/common.c:283 [inline]
syscall_exit_to_user_mode+0x19/0x50 kernel/entry/common.c:294
__do_fast_syscall_32+0x72/0xf0 arch/x86/entry/common.c:181
do_fast_syscall_32+0x2f/0x70 arch/x86/entry/common.c:203
entry_SYSENTER_compat_after_hwframe+0x53/0x62
INITIAL READ USE at:
lock_acquire kernel/locking/lockdep.c:5665 [inline]
lock_acquire+0x1ab/0x570 kernel/locking/lockdep.c:5630
__raw_read_lock_irqsave include/linux/rwlock_api_smp.h:160 [inline]
_raw_read_lock_irqsave+0x70/0x90 kernel/locking/spinlock.c:236
kill_fasync_rcu fs/fcntl.c:995 [inline]
kill_fasync fs/fcntl.c:1016 [inline]
kill_fasync+0x136/0x470 fs/fcntl.c:1009
sock_wake_async+0xd2/0x160 net/socket.c:1419
sk_wake_async include/net/sock.h:2466 [inline]
sk_wake_async include/net/sock.h:2462 [inline]
tcp_rcv_state_process+0x3ee9/0x4eb0 net/ipv4/tcp_input.c:6541
tcp_v6_do_rcv+0x3fc/0x13c0 net/ipv6/tcp_ipv6.c:1501
sk_backlog_rcv include/net/sock.h:1047 [inline]
__release_sock+0x134/0x3b0 net/core/sock.c:2849
release_sock+0x54/0x1b0 net/core/sock.c:3404
inet_wait_for_connect net/ipv4/af_inet.c:593 [inline]
__inet_stream_connect+0x5db/0xed0 net/ipv4/af_inet.c:685
tcp_sendmsg_fastopen net/ipv4/tcp.c:1178 [inline]
tcp_sendmsg_locked+0x1e9c/0x2fc0 net/ipv4/tcp.c:1220
tcp_sendmsg+0x2b/0x40 net/ipv4/tcp.c:1448
inet6_sendmsg+0x99/0xe0 net/ipv6/af_inet6.c:652
sock_sendmsg_nosec net/socket.c:714 [inline]
sock_sendmsg+0xcf/0x120 net/socket.c:734
__sys_sendto+0x21a/0x320 net/socket.c:2119
__do_sys_sendto net/socket.c:2131 [inline]
__se_sys_sendto net/socket.c:2127 [inline]
__ia32_sys_sendto+0xdb/0x1b0 net/socket.c:2127
do_syscall_32_irqs_on arch/x86/entry/common.c:112 [inline]
__do_fast_syscall_32+0x65/0xf0 arch/x86/entry/common.c:178
do_fast_syscall_32+0x2f/0x70 arch/x86/entry/common.c:203
entry_SYSENTER_compat_after_hwframe+0x53/0x62
}
... key at: [<ffffffff90fc3620>] __key.0+0x0/0x40
... acquired at:
lock_acquire kernel/locking/lockdep.c:5665 [inline]
lock_acquire+0x1ab/0x570 kernel/locking/lockdep.c:5630
__raw_read_lock_irqsave include/linux/rwlock_api_smp.h:160 [inline]
_raw_read_lock_irqsave+0x70/0x90 kernel/locking/spinlock.c:236
kill_fasync_rcu fs/fcntl.c:995 [inline]
kill_fasync fs/fcntl.c:1016 [inline]
kill_fasync+0x136/0x470 fs/fcntl.c:1009
snd_ctl_notify.part.0+0x261/0x560 sound/core/control.c:184
snd_ctl_notify sound/core/control.c:213 [inline]
snd_ctl_notify_one+0x234/0x280 sound/core/control.c:208
__snd_ctl_add_replace+0x599/0x760 sound/core/control.c:412
snd_ctl_elem_add+0x7dd/0x1220 sound/core/control.c:1587
snd_ctl_elem_add_compat+0x2bb/0x3c0 sound/core/control_compat.c:408
snd_ctl_ioctl_compat+0x140/0x9a0 sound/core/control_compat.c:460
__do_compat_sys_ioctl+0x1c7/0x290 fs/ioctl.c:968
do_syscall_32_irqs_on arch/x86/entry/common.c:112 [inline]
__do_fast_syscall_32+0x65/0xf0 arch/x86/entry/common.c:178
do_fast_syscall_32+0x2f/0x70 arch/x86/entry/common.c:203
entry_SYSENTER_compat_after_hwframe+0x53/0x62
stack backtrace:
CPU: 0 PID: 10388 Comm: syz-executor.1 Not tainted 5.19.0-rc3-syzkaller-00027-g78ca55889a54 #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:2609 [inline]
check_irq_usage.cold+0x4c1/0x6b0 kernel/locking/lockdep.c:2848
check_prev_add kernel/locking/lockdep.c:3099 [inline]
check_prevs_add kernel/locking/lockdep.c:3214 [inline]
validate_chain kernel/locking/lockdep.c:3829 [inline]
__lock_acquire+0x2ad6/0x5660 kernel/locking/lockdep.c:5053
lock_acquire kernel/locking/lockdep.c:5665 [inline]
lock_acquire+0x1ab/0x570 kernel/locking/lockdep.c:5630
__raw_read_lock_irqsave include/linux/rwlock_api_smp.h:160 [inline]
_raw_read_lock_irqsave+0x70/0x90 kernel/locking/spinlock.c:236
kill_fasync_rcu fs/fcntl.c:995 [inline]
kill_fasync fs/fcntl.c:1016 [inline]
kill_fasync+0x136/0x470 fs/fcntl.c:1009
snd_ctl_notify.part.0+0x261/0x560 sound/core/control.c:184
snd_ctl_notify sound/core/control.c:213 [inline]
snd_ctl_notify_one+0x234/0x280 sound/core/control.c:208
__snd_ctl_add_replace+0x599/0x760 sound/core/control.c:412
snd_ctl_elem_add+0x7dd/0x1220 sound/core/control.c:1587
snd_ctl_elem_add_compat+0x2bb/0x3c0 sound/core/control_compat.c:408
snd_ctl_ioctl_compat+0x140/0x9a0 sound/core/control_compat.c:460
__do_compat_sys_ioctl+0x1c7/0x290 fs/ioctl.c:968
do_syscall_32_irqs_on arch/x86/entry/common.c:112 [inline]
__do_fast_syscall_32+0x65/0xf0 arch/x86/entry/common.c:178
do_fast_syscall_32+0x2f/0x70 arch/x86/entry/common.c:203
entry_SYSENTER_compat_after_hwframe+0x53/0x62
RIP: 0023:0xf7f9f549
Code: 03 74 c0 01 10 05 03 74 b8 01 10 06 03 74 b4 01 10 07 03 74 b0 01 10 08 03 74 d8 01 00 00 00 00 00 51 52 55 89 e5 0f 34 cd 80 <5d> 5a 59 c3 90 90 90 90 8d b4 26 00 00 00 00 8d b4 26 00 00 00 00
RSP: 002b:00000000f7f9a5cc EFLAGS: 00000296 ORIG_RAX: 0000000000000036
RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00000000c1105517
RDX: 0000000020000400 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000296 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
</TASK>
----------------
Code disassembly (best guess):
0: 03 74 c0 01 add 0x1(%rax,%rax,8),%esi
4: 10 05 03 74 b8 01 adc %al,0x1b87403(%rip) # 0x1b8740d
a: 10 06 adc %al,(%rsi)
c: 03 74 b4 01 add 0x1(%rsp,%rsi,4),%esi
10: 10 07 adc %al,(%rdi)
12: 03 74 b0 01 add 0x1(%rax,%rsi,4),%esi
16: 10 08 adc %cl,(%rax)
18: 03 74 d8 01 add 0x1(%rax,%rbx,8),%esi
1c: 00 00 add %al,(%rax)
1e: 00 00 add %al,(%rax)
20: 00 51 52 add %dl,0x52(%rcx)
23: 55 push %rbp
24: 89 e5 mov %esp,%ebp
26: 0f 34 sysenter
28: cd 80 int $0x80
* 2a: 5d pop %rbp <-- trapping instruction
2b: 5a pop %rdx
2c: 59 pop %rcx
2d: c3 retq
2e: 90 nop
2f: 90 nop
30: 90 nop
31: 90 nop
32: 8d b4 26 00 00 00 00 lea 0x0(%rsi,%riz,1),%esi
39: 8d b4 26 00 00 00 00 lea 0x0(%rsi,%riz,1),%esi