========================================================
WARNING: possible irq lock inversion dependency detected
6.8.0-syzkaller-08951-gfe46a7dd189e #0 Not tainted
--------------------------------------------------------
syz-executor341/5170 just changed the state of lock:
ffff888025aa7148 (&timer->lock){+.+.}-{2:2}, at: spin_lock include/linux/spinlock.h:351 [inline]
ffff888025aa7148 (&timer->lock){+.+.}-{2:2}, at: class_spinlock_constructor include/linux/spinlock.h:561 [inline]
ffff888025aa7148 (&timer->lock){+.+.}-{2:2}, at: snd_timer_close_locked+0x65/0xbd0 sound/core/timer.c:412
but this lock was taken by another, SOFTIRQ-safe lock in the past:
(&group->lock#2){..-.}-{2:2}
and interrupts could create inverse lock ordering between them.
other info that might help us debug this:
Possible interrupt unsafe locking scenario:
CPU0 CPU1
---- ----
lock(&timer->lock);
local_irq_disable();
lock(&group->lock#2);
lock(&timer->lock);
<Interrupt>
lock(&group->lock#2);
*** DEADLOCK ***
3 locks held by syz-executor341/5170:
#0: ffffffff8f1daaa8 (register_mutex#4){+.+.}-{3:3}, at: odev_release+0x4a/0x80 sound/core/seq/oss/seq_oss.c:143
#1: ffff88801aa63178 (&q->timer_mutex){+.+.}-{3:3}, at: queue_delete+0x21/0xa0 sound/core/seq/seq_queue.c:124
#2: ffffffff8f1bc708 (register_mutex){+.+.}-{3:3}, at: class_mutex_constructor include/linux/mutex.h:169 [inline]
#2: ffffffff8f1bc708 (register_mutex){+.+.}-{3:3}, at: snd_timer_close+0x7e/0xf0 sound/core/timer.c:463
the shortest dependencies between 2nd lock and 1st lock:
-> (&group->lock#2){..-.}-{2:2} {
IN-SOFTIRQ-W at:
lock_acquire kernel/locking/lockdep.c:5754 [inline]
lock_acquire+0x1b1/0x540 kernel/locking/lockdep.c:5719
__raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline]
_raw_spin_lock_irqsave+0x3a/0x60 kernel/locking/spinlock.c:162
_snd_pcm_stream_lock_irqsave+0xa0/0xd0 sound/core/pcm_native.c:170
class_pcm_stream_lock_irqsave_constructor include/sound/pcm.h:669 [inline]
snd_pcm_period_elapsed+0x20/0x50 sound/core/pcm_lib.c:1904
dummy_hrtimer_callback+0x9d/0x1c0 sound/drivers/dummy.c:385
__run_hrtimer kernel/time/hrtimer.c:1692 [inline]
__hrtimer_run_queues+0x20c/0xc20 kernel/time/hrtimer.c:1756
hrtimer_run_softirq+0x17d/0x350 kernel/time/hrtimer.c:1773
__do_softirq+0x218/0x8de kernel/softirq.c:554
invoke_softirq kernel/softirq.c:428 [inline]
__irq_exit_rcu kernel/softirq.c:633 [inline]
irq_exit_rcu+0xb9/0x120 kernel/softirq.c:645
instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1043 [inline]
sysvec_apic_timer_interrupt+0x95/0xb0 arch/x86/kernel/apic/apic.c:1043
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
native_safe_halt arch/x86/include/asm/irqflags.h:48 [inline]
arch_safe_halt arch/x86/include/asm/irqflags.h:86 [inline]
default_idle+0xf/0x20 arch/x86/kernel/process.c:742
default_idle_call+0x6d/0xb0 kernel/sched/idle.c:117
cpuidle_idle_call kernel/sched/idle.c:191 [inline]
do_idle+0x32c/0x3f0 kernel/sched/idle.c:332
cpu_startup_entry+0x4f/0x60 kernel/sched/idle.c:430
start_secondary+0x220/0x2b0 arch/x86/kernel/smpboot.c:313
common_startup_64+0x13e/0x148
INITIAL USE at:
lock_acquire kernel/locking/lockdep.c:5754 [inline]
lock_acquire+0x1b1/0x540 kernel/locking/lockdep.c:5719
__raw_spin_lock_irq include/linux/spinlock_api_smp.h:119 [inline]
_raw_spin_lock_irq+0x36/0x50 kernel/locking/spinlock.c:170
spin_lock_irq include/linux/spinlock.h:376 [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]
class_pcm_stream_lock_irq_constructor include/sound/pcm.h:666 [inline]
snd_pcm_hw_params+0x151/0x1a30 sound/core/pcm_native.c:740
snd_pcm_kernel_ioctl+0x147/0x2d0 sound/core/pcm_native.c:3434
snd_pcm_oss_change_params_locked+0x146c/0x3aa0 sound/core/oss/pcm_oss.c:965
snd_pcm_oss_make_ready_locked+0xb7/0x130 sound/core/oss/pcm_oss.c:1187
snd_pcm_oss_read1 sound/core/oss/pcm_oss.c:1515 [inline]
snd_pcm_oss_read+0x3a2/0x760 sound/core/oss/pcm_oss.c:2773
vfs_read+0x1d4/0xb80 fs/read_write.c:474
ksys_read+0x12f/0x260 fs/read_write.c:619
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xd2/0x260 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x6d/0x75
}
... key at: [<ffffffff949baf40>] __key.5+0x0/0x40
... acquired at:
__raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline]
_raw_spin_lock_irqsave+0x3a/0x60 kernel/locking/spinlock.c:162
class_spinlock_irqsave_constructor include/linux/spinlock.h:574 [inline]
snd_timer_notify+0x111/0x3e0 sound/core/timer.c:1040
snd_pcm_timer_notify sound/core/pcm_native.c:622 [inline]
snd_pcm_post_start+0x272/0x350 sound/core/pcm_native.c:1459
snd_pcm_action_single+0x10a/0x150 sound/core/pcm_native.c:1289
snd_pcm_action+0x70/0x90 sound/core/pcm_native.c:1370
__snd_pcm_lib_xfer+0x175b/0x1ea0 sound/core/pcm_lib.c:2301
snd_pcm_oss_read3+0x18e/0x2d0 sound/core/oss/pcm_oss.c:1281
io_capture_transfer+0x273/0x300 sound/core/oss/io.c:73
snd_pcm_plug_read_transfer+0x1b3/0x300 sound/core/oss/pcm_plugin.c:663
snd_pcm_oss_read2+0x1dc/0x3d0 sound/core/oss/pcm_oss.c:1482
snd_pcm_oss_read1 sound/core/oss/pcm_oss.c:1520 [inline]
snd_pcm_oss_read+0x46e/0x760 sound/core/oss/pcm_oss.c:2773
vfs_read+0x1d4/0xb80 fs/read_write.c:474
ksys_read+0x12f/0x260 fs/read_write.c:619
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xd2/0x260 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x6d/0x75
-> (&timer->lock){+.+.}-{2:2} {
HARDIRQ-ON-W at:
lock_acquire kernel/locking/lockdep.c:5754 [inline]
lock_acquire+0x1b1/0x540 kernel/locking/lockdep.c:5719
__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]
class_spinlock_constructor include/linux/spinlock.h:561 [inline]
snd_timer_close_locked+0x65/0xbd0 sound/core/timer.c:412
snd_timer_close+0x8b/0xf0 sound/core/timer.c:464
snd_seq_timer_close+0xa4/0x100 sound/core/seq/seq_timer.c:302
queue_delete+0x49/0xa0 sound/core/seq/seq_queue.c:126
snd_seq_queue_delete+0x45/0x60 sound/core/seq/seq_queue.c:188
snd_seq_kernel_client_ctl+0x107/0x1c0 sound/core/seq/seq_clientmgr.c:2526
delete_seq_queue.isra.0+0xc8/0x150 sound/core/seq/oss/seq_oss_init.c:371
odev_release+0x52/0x80 sound/core/seq/oss/seq_oss.c:144
__fput+0x270/0xb80 fs/file_table.c:422
task_work_run+0x14e/0x250 kernel/task_work.c:180
exit_task_work include/linux/task_work.h:38 [inline]
do_exit+0xa7d/0x2be0 kernel/exit.c:878
do_group_exit+0xd3/0x2a0 kernel/exit.c:1027
__do_sys_exit_group kernel/exit.c:1038 [inline]
__se_sys_exit_group kernel/exit.c:1036 [inline]
__x64_sys_exit_group+0x3e/0x50 kernel/exit.c:1036
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xd2/0x260 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x6d/0x75
SOFTIRQ-ON-W at:
lock_acquire kernel/locking/lockdep.c:5754 [inline]
lock_acquire+0x1b1/0x540 kernel/locking/lockdep.c:5719
__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]
class_spinlock_constructor include/linux/spinlock.h:561 [inline]
snd_timer_close_locked+0x65/0xbd0 sound/core/timer.c:412
snd_timer_close+0x8b/0xf0 sound/core/timer.c:464
snd_seq_timer_close+0xa4/0x100 sound/core/seq/seq_timer.c:302
queue_delete+0x49/0xa0 sound/core/seq/seq_queue.c:126
snd_seq_queue_delete+0x45/0x60 sound/core/seq/seq_queue.c:188
snd_seq_kernel_client_ctl+0x107/0x1c0 sound/core/seq/seq_clientmgr.c:2526
delete_seq_queue.isra.0+0xc8/0x150 sound/core/seq/oss/seq_oss_init.c:371
odev_release+0x52/0x80 sound/core/seq/oss/seq_oss.c:144
__fput+0x270/0xb80 fs/file_table.c:422
task_work_run+0x14e/0x250 kernel/task_work.c:180
exit_task_work include/linux/task_work.h:38 [inline]
do_exit+0xa7d/0x2be0 kernel/exit.c:878
do_group_exit+0xd3/0x2a0 kernel/exit.c:1027
__do_sys_exit_group kernel/exit.c:1038 [inline]
__se_sys_exit_group kernel/exit.c:1036 [inline]
__x64_sys_exit_group+0x3e/0x50 kernel/exit.c:1036
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xd2/0x260 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x6d/0x75
INITIAL USE at:
lock_acquire kernel/locking/lockdep.c:5754 [inline]
lock_acquire+0x1b1/0x540 kernel/locking/lockdep.c:5719
__raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline]
_raw_spin_lock_irqsave+0x3a/0x60 kernel/locking/spinlock.c:162
class_spinlock_irqsave_constructor include/linux/spinlock.h:574 [inline]
snd_timer_notify+0x111/0x3e0 sound/core/timer.c:1040
snd_pcm_timer_notify sound/core/pcm_native.c:622 [inline]
snd_pcm_post_start+0x272/0x350 sound/core/pcm_native.c:1459
snd_pcm_action_single+0x10a/0x150 sound/core/pcm_native.c:1289
snd_pcm_action+0x70/0x90 sound/core/pcm_native.c:1370
__snd_pcm_lib_xfer+0x175b/0x1ea0 sound/core/pcm_lib.c:2301
snd_pcm_oss_read3+0x18e/0x2d0 sound/core/oss/pcm_oss.c:1281
io_capture_transfer+0x273/0x300 sound/core/oss/io.c:73
snd_pcm_plug_read_transfer+0x1b3/0x300 sound/core/oss/pcm_plugin.c:663
snd_pcm_oss_read2+0x1dc/0x3d0 sound/core/oss/pcm_oss.c:1482
snd_pcm_oss_read1 sound/core/oss/pcm_oss.c:1520 [inline]
snd_pcm_oss_read+0x46e/0x760 sound/core/oss/pcm_oss.c:2773
vfs_read+0x1d4/0xb80 fs/read_write.c:474
ksys_read+0x12f/0x260 fs/read_write.c:619
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xd2/0x260 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x6d/0x75
}
... key at: [<ffffffff949babc0>] __key.6+0x0/0x40
... acquired at:
mark_usage kernel/locking/lockdep.c:4591 [inline]
__lock_acquire+0x979/0x3b30 kernel/locking/lockdep.c:5091
lock_acquire kernel/locking/lockdep.c:5754 [inline]
lock_acquire+0x1b1/0x540 kernel/locking/lockdep.c:5719
__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]
class_spinlock_constructor include/linux/spinlock.h:561 [inline]
snd_timer_close_locked+0x65/0xbd0 sound/core/timer.c:412
snd_timer_close+0x8b/0xf0 sound/core/timer.c:464
snd_seq_timer_close+0xa4/0x100 sound/core/seq/seq_timer.c:302
queue_delete+0x49/0xa0 sound/core/seq/seq_queue.c:126
snd_seq_queue_delete+0x45/0x60 sound/core/seq/seq_queue.c:188
snd_seq_kernel_client_ctl+0x107/0x1c0 sound/core/seq/seq_clientmgr.c:2526
delete_seq_queue.isra.0+0xc8/0x150 sound/core/seq/oss/seq_oss_init.c:371
odev_release+0x52/0x80 sound/core/seq/oss/seq_oss.c:144
__fput+0x270/0xb80 fs/file_table.c:422
task_work_run+0x14e/0x250 kernel/task_work.c:180
exit_task_work include/linux/task_work.h:38 [inline]
do_exit+0xa7d/0x2be0 kernel/exit.c:878
do_group_exit+0xd3/0x2a0 kernel/exit.c:1027
__do_sys_exit_group kernel/exit.c:1038 [inline]
__se_sys_exit_group kernel/exit.c:1036 [inline]
__x64_sys_exit_group+0x3e/0x50 kernel/exit.c:1036
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xd2/0x260 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x6d/0x75
stack backtrace:
CPU: 3 PID: 5170 Comm: syz-executor341 Not tainted 6.8.0-syzkaller-08951-gfe46a7dd189e #0
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
Call Trace:
<TASK>
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0x116/0x1f0 lib/dump_stack.c:114
print_irq_inversion_bug.part.0+0x3e9/0x5a0 kernel/locking/lockdep.c:4080
print_irq_inversion_bug kernel/locking/lockdep.c:4033 [inline]
check_usage_forwards kernel/locking/lockdep.c:4111 [inline]
mark_lock_irq kernel/locking/lockdep.c:4243 [inline]
mark_lock+0x574/0xc60 kernel/locking/lockdep.c:4678
mark_usage kernel/locking/lockdep.c:4591 [inline]
__lock_acquire+0x979/0x3b30 kernel/locking/lockdep.c:5091
lock_acquire kernel/locking/lockdep.c:5754 [inline]
lock_acquire+0x1b1/0x540 kernel/locking/lockdep.c:5719
__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]
class_spinlock_constructor include/linux/spinlock.h:561 [inline]
snd_timer_close_locked+0x65/0xbd0 sound/core/timer.c:412
snd_timer_close+0x8b/0xf0 sound/core/timer.c:464
snd_seq_timer_close+0xa4/0x100 sound/core/seq/seq_timer.c:302
queue_delete+0x49/0xa0 sound/core/seq/seq_queue.c:126
snd_seq_queue_delete+0x45/0x60 sound/core/seq/seq_queue.c:188
snd_seq_kernel_client_ctl+0x107/0x1c0 sound/core/seq/seq_clientmgr.c:2526
delete_seq_queue.isra.0+0xc8/0x150 sound/core/seq/oss/seq_oss_init.c:371
odev_release+0x52/0x80 sound/core/seq/oss/seq_oss.c:144
__fput+0x270/0xb80 fs/file_table.c:422
task_work_run+0x14e/0x250 kernel/task_work.c:180
exit_task_work include/linux/task_work.h:38 [inline]
do_exit+0xa7d/0x2be0 kernel/exit.c:878
do_group_exit+0xd3/0x2a0 kernel/exit.c:1027
__do_sys_exit_group kernel/exit.c:1038 [inline]
__se_sys_exit_group kernel/exit.c:1036 [inline]
__x64_sys_exit_group+0x3e/0x50 kernel/exit.c:1036
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xd2/0x260 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x6d/0x75
RIP: 0033:0x7f9483881c79
Code: Unable to access opcode bytes at 0x7f9483881c4f.
RSP: 002b:00007ffd78f50798 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f9483881c79
RDX: 000000000000003c RSI: 00000000000000e7 RDI: 0000000000000000
RBP: 00007f94838fc270 R08: ffffffffffffffb8 R09: 00007ffd78f509b8
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f94838fc270
R13: 0000000000000000 R14: 00007f94838fccc0 R15: 00007f9483853a70
</TASK>