Re: [syzbot] [kernel?] inconsistent lock state in sock_hash_delete_elem

From: syzbot
Date: Mon Apr 01 2024 - 03:07:20 EST

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Hello,

syzbot has tested the proposed patch but the reproducer is still triggering an issue:
possible deadlock in console_flush_all

------------[ cut here ]------------
======================================================
WARNING: possible circular locking dependency detected
6.8.0-syzkaller-08951-gfe46a7dd189e-dirty #0 Not tainted
------------------------------------------------------
syz-executor.0/5485 is trying to acquire lock:
ffffffff8d6bdea0 (console_owner){....}-{0:0}, at: console_lock_spinning_enable kernel/printk/printk.c:1873 [inline]
ffffffff8d6bdea0 (console_owner){....}-{0:0}, at: console_emit_next_record kernel/printk/printk.c:2901 [inline]
ffffffff8d6bdea0 (console_owner){....}-{0:0}, at: console_flush_all+0x4ff/0xd70 kernel/printk/printk.c:2973

but task is already holding lock:
ffff8880b953e698 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x29/0x130 kernel/sched/core.c:559

which lock already depends on the new lock.

the existing dependency chain (in reverse order) is:

-> #4 (&rq->__lock){-.-.}-{2:2}:
_raw_spin_lock_nested+0x31/0x40 kernel/locking/spinlock.c:378
raw_spin_rq_lock_nested+0x29/0x130 kernel/sched/core.c:559
raw_spin_rq_lock kernel/sched/sched.h:1385 [inline]
rq_lock kernel/sched/sched.h:1699 [inline]
task_fork_fair+0x70/0x240 kernel/sched/fair.c:12629
sched_cgroup_fork+0x3cf/0x510 kernel/sched/core.c:4845
copy_process+0x4106/0x9160 kernel/fork.c:2498
kernel_clone+0xfd/0x940 kernel/fork.c:2796
user_mode_thread+0xb4/0xf0 kernel/fork.c:2874
rest_init+0x27/0x2b0 init/main.c:695
arch_call_rest_init+0x13/0x40 init/main.c:831
start_kernel+0x3a3/0x490 init/main.c:1077
x86_64_start_reservations+0x18/0x30 arch/x86/kernel/head64.c:509
x86_64_start_kernel+0xb2/0xc0 arch/x86/kernel/head64.c:490
common_startup_64+0x13e/0x148

-> #3 (&p->pi_lock){-.-.}-{2:2}:
__raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline]
_raw_spin_lock_irqsave+0x3a/0x60 kernel/locking/spinlock.c:162
class_raw_spinlock_irqsave_constructor include/linux/spinlock.h:553 [inline]
try_to_wake_up+0x9a/0x13e0 kernel/sched/core.c:4262
__wake_up_common+0x131/0x1e0 kernel/sched/wait.c:89
__wake_up_common_lock kernel/sched/wait.c:106 [inline]
__wake_up+0x31/0x60 kernel/sched/wait.c:127
tty_port_default_wakeup+0x2a/0x40 drivers/tty/tty_port.c:69
serial8250_tx_chars+0x55a/0x8b0 drivers/tty/serial/8250/8250_port.c:1835
serial8250_handle_irq+0x5d3/0x780 drivers/tty/serial/8250/8250_port.c:1942
serial8250_default_handle_irq+0x9a/0x210 drivers/tty/serial/8250/8250_port.c:1962
serial8250_interrupt+0x103/0x210 drivers/tty/serial/8250/8250_core.c:127
__handle_irq_event_percpu+0x229/0x750 kernel/irq/handle.c:158
handle_irq_event_percpu kernel/irq/handle.c:193 [inline]
handle_irq_event+0xab/0x1e0 kernel/irq/handle.c:210
handle_edge_irq+0x263/0xd10 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+0xde/0x250 arch/x86/kernel/irq.c:257
common_interrupt+0xab/0xd0 arch/x86/kernel/irq.c:247
asm_common_interrupt+0x26/0x40 arch/x86/include/asm/idtentry.h:693
__raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:151 [inline]
_raw_spin_unlock_irqrestore+0x31/0x80 kernel/locking/spinlock.c:194
spin_unlock_irqrestore include/linux/spinlock.h:406 [inline]
uart_port_unlock_irqrestore include/linux/serial_core.h:667 [inline]
serial_port_runtime_resume+0x2b7/0x340 drivers/tty/serial/serial_port.c:41
__rpm_callback+0xc5/0x4c0 drivers/base/power/runtime.c:394
rpm_callback+0x1da/0x220 drivers/base/power/runtime.c:448
rpm_resume+0xcf9/0x12f0 drivers/base/power/runtime.c:914
pm_runtime_work+0x10c/0x150 drivers/base/power/runtime.c:979
process_one_work+0x9a9/0x1a60 kernel/workqueue.c:3254
process_scheduled_works kernel/workqueue.c:3335 [inline]
worker_thread+0x6c8/0xf70 kernel/workqueue.c:3416
kthread+0x2c1/0x3a0 kernel/kthread.c:388
ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:243

-> #2 (&tty->write_wait){-.-.}-{2:2}:
__raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline]
_raw_spin_lock_irqsave+0x3a/0x60 kernel/locking/spinlock.c:162
__wake_up_common_lock kernel/sched/wait.c:105 [inline]
__wake_up+0x1c/0x60 kernel/sched/wait.c:127
tty_port_default_wakeup+0x2a/0x40 drivers/tty/tty_port.c:69
serial8250_tx_chars+0x55a/0x8b0 drivers/tty/serial/8250/8250_port.c:1835
serial8250_handle_irq+0x5d3/0x780 drivers/tty/serial/8250/8250_port.c:1942
serial8250_default_handle_irq+0x9a/0x210 drivers/tty/serial/8250/8250_port.c:1962
serial8250_interrupt+0x103/0x210 drivers/tty/serial/8250/8250_core.c:127
__handle_irq_event_percpu+0x229/0x750 kernel/irq/handle.c:158
handle_irq_event_percpu kernel/irq/handle.c:193 [inline]
handle_irq_event+0xab/0x1e0 kernel/irq/handle.c:210
handle_edge_irq+0x263/0xd10 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+0xde/0x250 arch/x86/kernel/irq.c:257
common_interrupt+0xab/0xd0 arch/x86/kernel/irq.c:247
asm_common_interrupt+0x26/0x40 arch/x86/include/asm/idtentry.h:693
__raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:151 [inline]
_raw_spin_unlock_irqrestore+0x31/0x80 kernel/locking/spinlock.c:194
spin_unlock_irqrestore include/linux/spinlock.h:406 [inline]
uart_port_unlock_irqrestore include/linux/serial_core.h:667 [inline]
serial_port_runtime_resume+0x2b7/0x340 drivers/tty/serial/serial_port.c:41
__rpm_callback+0xc5/0x4c0 drivers/base/power/runtime.c:394
rpm_callback+0x1da/0x220 drivers/base/power/runtime.c:448
rpm_resume+0xcf9/0x12f0 drivers/base/power/runtime.c:914
pm_runtime_work+0x10c/0x150 drivers/base/power/runtime.c:979
process_one_work+0x9a9/0x1a60 kernel/workqueue.c:3254
process_scheduled_works kernel/workqueue.c:3335 [inline]
worker_thread+0x6c8/0xf70 kernel/workqueue.c:3416
kthread+0x2c1/0x3a0 kernel/kthread.c:388
ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:243

-> #1 (&port_lock_key){-.-.}-{2:2}:
__raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline]
_raw_spin_lock_irqsave+0x3a/0x60 kernel/locking/spinlock.c:162
uart_port_lock_irqsave include/linux/serial_core.h:616 [inline]
serial8250_console_write+0xaa6/0x1090 drivers/tty/serial/8250/8250_port.c:3403
console_emit_next_record kernel/printk/printk.c:2907 [inline]
console_flush_all+0x53f/0xd70 kernel/printk/printk.c:2973
console_unlock+0xae/0x290 kernel/printk/printk.c:3042
vprintk_emit kernel/printk/printk.c:2342 [inline]
vprintk_emit+0x11a/0x5a0 kernel/printk/printk.c:2297
vprintk+0x7f/0xa0 kernel/printk/printk_safe.c:45
_printk+0xc8/0x100 kernel/printk/printk.c:2367
register_console+0xa7b/0x1060 kernel/printk/printk.c:3548
univ8250_console_init+0x35/0x50 drivers/tty/serial/8250/8250_core.c:717
console_init+0xcc/0x5e0 kernel/printk/printk.c:3694
start_kernel+0x259/0x490 init/main.c:1012
x86_64_start_reservations+0x18/0x30 arch/x86/kernel/head64.c:509
x86_64_start_kernel+0xb2/0xc0 arch/x86/kernel/head64.c:490
common_startup_64+0x13e/0x148

-> #0 (console_owner){....}-{0:0}:
check_prev_add kernel/locking/lockdep.c:3134 [inline]
check_prevs_add kernel/locking/lockdep.c:3253 [inline]
validate_chain kernel/locking/lockdep.c:3869 [inline]
__lock_acquire+0x2478/0x3b30 kernel/locking/lockdep.c:5137
lock_acquire kernel/locking/lockdep.c:5754 [inline]
lock_acquire+0x1b1/0x540 kernel/locking/lockdep.c:5719
console_lock_spinning_enable kernel/printk/printk.c:1873 [inline]
console_emit_next_record kernel/printk/printk.c:2901 [inline]
console_flush_all+0x514/0xd70 kernel/printk/printk.c:2973
console_unlock+0xae/0x290 kernel/printk/printk.c:3042
vprintk_emit kernel/printk/printk.c:2342 [inline]
vprintk_emit+0x11a/0x5a0 kernel/printk/printk.c:2297
vprintk+0x7f/0xa0 kernel/printk/printk_safe.c:45
_printk+0xc8/0x100 kernel/printk/printk.c:2367
__report_bug lib/bug.c:195 [inline]
report_bug+0x4ac/0x580 lib/bug.c:219
handle_bug+0x3d/0x70 arch/x86/kernel/traps.c:239
exc_invalid_op+0x17/0x50 arch/x86/kernel/traps.c:260
asm_exc_invalid_op+0x1a/0x20 arch/x86/include/asm/idtentry.h:621
__local_bh_enable_ip+0xc3/0x120 kernel/softirq.c:362
spin_unlock_bh include/linux/spinlock.h:396 [inline]
sock_hash_delete_elem+0x1f4/0x260 net/core/sock_map.c:947
___bpf_prog_run+0x3e51/0xae80 kernel/bpf/core.c:1997
__bpf_prog_run32+0xc1/0x100 kernel/bpf/core.c:2236
bpf_dispatcher_nop_func include/linux/bpf.h:1234 [inline]
__bpf_prog_run include/linux/filter.h:657 [inline]
bpf_prog_run include/linux/filter.h:664 [inline]
__bpf_trace_run kernel/trace/bpf_trace.c:2381 [inline]
bpf_trace_run4+0x176/0x460 kernel/trace/bpf_trace.c:2422
__bpf_trace_sched_switch+0x13e/0x190 include/trace/events/sched.h:222
trace_sched_switch include/trace/events/sched.h:222 [inline]
__schedule+0x2266/0x5c70 kernel/sched/core.c:6733
preempt_schedule_common+0x44/0xc0 kernel/sched/core.c:6915
preempt_schedule_thunk+0x1a/0x30 arch/x86/entry/thunk_64.S:12
class_preempt_destructor include/linux/preempt.h:480 [inline]
class_preempt_destructor include/linux/preempt.h:480 [inline]
try_to_wake_up+0xc08/0x13e0 kernel/sched/core.c:4233
wake_up_process kernel/sched/core.c:4510 [inline]
wake_up_q+0x91/0x140 kernel/sched/core.c:1029
futex_wake+0x43e/0x4e0 kernel/futex/waitwake.c:199
do_futex+0x1e5/0x350 kernel/futex/syscalls.c:107
__do_sys_futex kernel/futex/syscalls.c:179 [inline]
__se_sys_futex kernel/futex/syscalls.c:160 [inline]
__x64_sys_futex+0x1e1/0x4c0 kernel/futex/syscalls.c:160
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

other info that might help us debug this:

Chain exists of:
console_owner --> &p->pi_lock --> &rq->__lock

Possible unsafe locking scenario:

CPU0 CPU1
---- ----
lock(&rq->__lock);
lock(&p->pi_lock);
lock(&rq->__lock);
lock(console_owner);

*** DEADLOCK ***

4 locks held by syz-executor.0/5485:
#0: ffff8880b953e698 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x29/0x130 kernel/sched/core.c:559
#1: ffffffff8d7b08e0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:298 [inline]
#1: ffffffff8d7b08e0 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:750 [inline]
#1: ffffffff8d7b08e0 (rcu_read_lock){....}-{1:2}, at: __bpf_trace_run kernel/trace/bpf_trace.c:2380 [inline]
#1: ffffffff8d7b08e0 (rcu_read_lock){....}-{1:2}, at: bpf_trace_run4+0x107/0x460 kernel/trace/bpf_trace.c:2422
#2: ffffffff8d79e2e0 (console_lock){+.+.}-{0:0}, at: vprintk+0x7f/0xa0 kernel/printk/printk_safe.c:45
#3: ffffffff8d79e350 (console_srcu){....}-{0:0}, at: rcu_try_lock_acquire include/linux/rcupdate.h:303 [inline]
#3: ffffffff8d79e350 (console_srcu){....}-{0:0}, at: srcu_read_lock_nmisafe include/linux/srcu.h:232 [inline]
#3: ffffffff8d79e350 (console_srcu){....}-{0:0}, at: console_srcu_read_lock kernel/printk/printk.c:286 [inline]
#3: ffffffff8d79e350 (console_srcu){....}-{0:0}, at: console_flush_all+0x12d/0xd70 kernel/printk/printk.c:2965

stack backtrace:
CPU: 1 PID: 5485 Comm: syz-executor.0 Not tainted 6.8.0-syzkaller-08951-gfe46a7dd189e-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+0x116/0x1f0 lib/dump_stack.c:114
check_noncircular+0x31a/0x400 kernel/locking/lockdep.c:2187
check_prev_add kernel/locking/lockdep.c:3134 [inline]
check_prevs_add kernel/locking/lockdep.c:3253 [inline]
validate_chain kernel/locking/lockdep.c:3869 [inline]
__lock_acquire+0x2478/0x3b30 kernel/locking/lockdep.c:5137
lock_acquire kernel/locking/lockdep.c:5754 [inline]
lock_acquire+0x1b1/0x540 kernel/locking/lockdep.c:5719
console_lock_spinning_enable kernel/printk/printk.c:1873 [inline]
console_emit_next_record kernel/printk/printk.c:2901 [inline]
console_flush_all+0x514/0xd70 kernel/printk/printk.c:2973
console_unlock+0xae/0x290 kernel/printk/printk.c:3042
vprintk_emit kernel/printk/printk.c:2342 [inline]
vprintk_emit+0x11a/0x5a0 kernel/printk/printk.c:2297
vprintk+0x7f/0xa0 kernel/printk/printk_safe.c:45
_printk+0xc8/0x100 kernel/printk/printk.c:2367
__report_bug lib/bug.c:195 [inline]
report_bug+0x4ac/0x580 lib/bug.c:219
handle_bug+0x3d/0x70 arch/x86/kernel/traps.c:239
exc_invalid_op+0x17/0x50 arch/x86/kernel/traps.c:260
asm_exc_invalid_op+0x1a/0x20 arch/x86/include/asm/idtentry.h:621
RIP: 0010:__local_bh_enable_ip+0xc3/0x120 kernel/softirq.c:362
Code: 00 e8 81 6c 0b 00 e8 9c 69 42 00 fb 65 8b 05 cc 34 b2 7e 85 c0 74 52 5b 5d c3 cc cc cc cc 65 8b 05 4e e9 b0 7e 85 c0 75 9e 90 <0f> 0b 90 eb 98 e8 c3 67 42 00 eb 99 48 89 ef e8 49 e0 19 00 eb a2
RSP: 0018:ffffc900037a7600 EFLAGS: 00010046
RAX: 0000000000000000 RBX: 0000000000000201 RCX: 1ffffffff1f3d467
RDX: 0000000000000000 RSI: 0000000000000201 RDI: ffffffff88cb2794
RBP: ffffffff88cb2794 R08: 0000000000000000 R09: ffffed100dab841c
R10: ffff88806d5c20e3 R11: ffffffff934716a8 R12: fffffffffffffffe
R13: ffff88806d5c20e0 R14: ffff88806d5c20d8 R15: 0000000023700e53
spin_unlock_bh include/linux/spinlock.h:396 [inline]
sock_hash_delete_elem+0x1f4/0x260 net/core/sock_map.c:947
___bpf_prog_run+0x3e51/0xae80 kernel/bpf/core.c:1997
__bpf_prog_run32+0xc1/0x100 kernel/bpf/core.c:2236
bpf_dispatcher_nop_func include/linux/bpf.h:1234 [inline]
__bpf_prog_run include/linux/filter.h:657 [inline]
bpf_prog_run include/linux/filter.h:664 [inline]
__bpf_trace_run kernel/trace/bpf_trace.c:2381 [inline]
bpf_trace_run4+0x176/0x460 kernel/trace/bpf_trace.c:2422
__bpf_trace_sched_switch+0x13e/0x190 include/trace/events/sched.h:222
trace_sched_switch include/trace/events/sched.h:222 [inline]
__schedule+0x2266/0x5c70 kernel/sched/core.c:6733
preempt_schedule_common+0x44/0xc0 kernel/sched/core.c:6915
preempt_schedule_thunk+0x1a/0x30 arch/x86/entry/thunk_64.S:12
class_preempt_destructor include/linux/preempt.h:480 [inline]
class_preempt_destructor include/linux/preempt.h:480 [inline]
try_to_wake_up+0xc08/0x13e0 kernel/sched/core.c:4233
wake_up_process kernel/sched/core.c:4510 [inline]
wake_up_q+0x91/0x140 kernel/sched/core.c:1029
futex_wake+0x43e/0x4e0 kernel/futex/waitwake.c:199
do_futex+0x1e5/0x350 kernel/futex/syscalls.c:107
__do_sys_futex kernel/futex/syscalls.c:179 [inline]
__se_sys_futex kernel/futex/syscalls.c:160 [inline]
__x64_sys_futex+0x1e1/0x4c0 kernel/futex/syscalls.c:160
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: 0033:0x7f1002a7dda9
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:00007f100382d178 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: ffffffffffffffda RBX: 00007f1002babf88 RCX: 00007f1002a7dda9
RDX: 00000000000f4240 RSI: 0000000000000081 RDI: 00007f1002babf8c
RBP: 00007f1002babf80 R08: 0000000000000001 R09: 00007f100382d6c0
R10: 0000000000000005 R11: 0000000000000246 R12: 00007f1002babf8c
R13: 000000000000000b R14: 00007fff6da22fd0 R15: 00007fff6da230b8
</TASK>
WARNING: CPU: 1 PID: 5485 at kernel/softirq.c:362 __local_bh_enable_ip+0xc3/0x120 kernel/softirq.c:362
Modules linked in:
CPU: 1 PID: 5485 Comm: syz-executor.0 Not tainted 6.8.0-syzkaller-08951-gfe46a7dd189e-dirty #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024
RIP: 0010:__local_bh_enable_ip+0xc3/0x120 kernel/softirq.c:362
Code: 00 e8 81 6c 0b 00 e8 9c 69 42 00 fb 65 8b 05 cc 34 b2 7e 85 c0 74 52 5b 5d c3 cc cc cc cc 65 8b 05 4e e9 b0 7e 85 c0 75 9e 90 <0f> 0b 90 eb 98 e8 c3 67 42 00 eb 99 48 89 ef e8 49 e0 19 00 eb a2
RSP: 0018:ffffc900037a7600 EFLAGS: 00010046
RAX: 0000000000000000 RBX: 0000000000000201 RCX: 1ffffffff1f3d467
RDX: 0000000000000000 RSI: 0000000000000201 RDI: ffffffff88cb2794
RBP: ffffffff88cb2794 R08: 0000000000000000 R09: ffffed100dab841c
R10: ffff88806d5c20e3 R11: ffffffff934716a8 R12: fffffffffffffffe
R13: ffff88806d5c20e0 R14: ffff88806d5c20d8 R15: 0000000023700e53
FS: 00007f100382d6c0(0000) GS:ffff8880b9500000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f1002ba80c0 CR3: 000000007c110000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
<TASK>
spin_unlock_bh include/linux/spinlock.h:396 [inline]
sock_hash_delete_elem+0x1f4/0x260 net/core/sock_map.c:947
___bpf_prog_run+0x3e51/0xae80 kernel/bpf/core.c:1997
__bpf_prog_run32+0xc1/0x100 kernel/bpf/core.c:2236
bpf_dispatcher_nop_func include/linux/bpf.h:1234 [inline]
__bpf_prog_run include/linux/filter.h:657 [inline]
bpf_prog_run include/linux/filter.h:664 [inline]
__bpf_trace_run kernel/trace/bpf_trace.c:2381 [inline]
bpf_trace_run4+0x176/0x460 kernel/trace/bpf_trace.c:2422
__bpf_trace_sched_switch+0x13e/0x190 include/trace/events/sched.h:222
trace_sched_switch include/trace/events/sched.h:222 [inline]
__schedule+0x2266/0x5c70 kernel/sched/core.c:6733
preempt_schedule_common+0x44/0xc0 kernel/sched/core.c:6915
preempt_schedule_thunk+0x1a/0x30 arch/x86/entry/thunk_64.S:12
class_preempt_destructor include/linux/preempt.h:480 [inline]
class_preempt_destructor include/linux/preempt.h:480 [inline]
try_to_wake_up+0xc08/0x13e0 kernel/sched/core.c:4233
wake_up_process kernel/sched/core.c:4510 [inline]
wake_up_q+0x91/0x140 kernel/sched/core.c:1029
futex_wake+0x43e/0x4e0 kernel/futex/waitwake.c:199
do_futex+0x1e5/0x350 kernel/futex/syscalls.c:107
__do_sys_futex kernel/futex/syscalls.c:179 [inline]
__se_sys_futex kernel/futex/syscalls.c:160 [inline]
__x64_sys_futex+0x1e1/0x4c0 kernel/futex/syscalls.c:160
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: 0033:0x7f1002a7dda9
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:00007f100382d178 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: ffffffffffffffda RBX: 00007f1002babf88 RCX: 00007f1002a7dda9
RDX: 00000000000f4240 RSI: 0000000000000081 RDI: 00007f1002babf8c
RBP: 00007f1002babf80 R08: 0000000000000001 R09: 00007f100382d6c0
R10: 0000000000000005 R11: 0000000000000246 R12: 00007f1002babf8c
R13: 000000000000000b R14: 00007fff6da22fd0 R15: 00007fff6da230b8
</TASK>

Tested on:

commit: fe46a7dd Merge tag 'sound-6.9-rc1' of git://git.kernel..
git tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
console output: https://syzkaller.appspot.com/x/log.txt?x=10d4365e180000
kernel config: https://syzkaller.appspot.com/x/.config?x=aef2a55903e5791c
dashboard link: https://syzkaller.appspot.com/bug?extid=1dab15008502531a13d2
compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40
patch: https://syzkaller.appspot.com/x/patch.diff?x=11b605e5180000

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