=====================================================
WARNING: SOFTIRQ-safe -> SOFTIRQ-unsafe lock order detected
5.14.0-rc4-syzkaller #0 Not tainted
-----------------------------------------------------
syz-executor.3/23570 [HC0[0]:SC0[0]:HE0:SE1] is trying to acquire:
ffff8880342a1cb8 (&f->f_owner.lock){.+.?}-{2:2}, at: send_sigio+0x2f/0x300 fs/fcntl.c:795
and this task is already holding:
ffff888034c750c0 (&new->fa_lock){.+.-}-{2:2}, at: kill_fasync_rcu fs/fcntl.c:1012 [inline]
ffff888034c750c0 (&new->fa_lock){.+.-}-{2:2}, at: kill_fasync+0x13b/0x430 fs/fcntl.c:1033
which would create a new lock dependency:
(&new->fa_lock){.+.-}-{2:2} -> (&f->f_owner.lock){.+.?}-{2:2}
but this new dependency connects a SOFTIRQ-irq-safe lock:
(&timer->lock){..-.}-{2:2}
... which became SOFTIRQ-irq-safe at:
lock_acquire+0x182/0x4a0 kernel/locking/lockdep.c:5625
__raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline]
_raw_spin_lock_irqsave+0xb3/0x100 kernel/locking/spinlock.c:159
snd_timer_interrupt+0x210/0x1410 sound/core/timer.c:857
call_timer_fn+0xf6/0x210 kernel/time/timer.c:1419
expire_timers kernel/time/timer.c:1464 [inline]
__run_timers+0x6ff/0x910 kernel/time/timer.c:1732
run_timer_softirq+0x63/0xf0 kernel/time/timer.c:1745
__do_softirq+0x372/0x783 kernel/softirq.c:558
invoke_softirq kernel/softirq.c:432 [inline]
__irq_exit_rcu+0x21b/0x260 kernel/softirq.c:636
irq_exit_rcu+0x5/0x20 kernel/softirq.c:648
sysvec_apic_timer_interrupt+0x91/0xb0 arch/x86/kernel/apic/apic.c:1100
asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:638
finish_lock_switch+0xf0/0x1c0 kernel/sched/core.c:4438
finish_task_switch+0x140/0x630 kernel/sched/core.c:4555
context_switch kernel/sched/core.c:4686 [inline]
__schedule+0xc0f/0x11f0 kernel/sched/core.c:5940
schedule+0x14b/0x210 kernel/sched/core.c:6019
freezable_schedule include/linux/freezer.h:172 [inline]
do_nanosleep+0x1b6/0x7b0 kernel/time/hrtimer.c:1896
hrtimer_nanosleep+0x239/0x470 kernel/time/hrtimer.c:1949
__do_sys_clock_nanosleep kernel/time/posix-timers.c:1267 [inline]
__se_sys_clock_nanosleep kernel/time/posix-timers.c:1245 [inline]
__x64_sys_clock_nanosleep+0x344/0x3d0 kernel/time/posix-timers.c:1245
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x44/0xae
to a SOFTIRQ-irq-unsafe lock:
(&f->f_owner.lock){.+.?}-{2:2}
... which became SOFTIRQ-irq-unsafe at:
...
lock_acquire+0x182/0x4a0 kernel/locking/lockdep.c:5625
__raw_read_lock include/linux/rwlock_api_smp.h:149 [inline]
_raw_read_lock+0x32/0x40 kernel/locking/spinlock.c:223
f_getown_ex fs/fcntl.c:211 [inline]
do_fcntl+0x150/0x1510 fs/fcntl.c:395
__do_sys_fcntl fs/fcntl.c:471 [inline]
__se_sys_fcntl+0xd8/0x1b0 fs/fcntl.c:456
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x44/0xae
other info that might help us debug this:
Chain exists of:
&timer->lock --> &new->fa_lock --> &f->f_owner.lock
Possible interrupt unsafe locking scenario:
CPU0 CPU1
---- ----
lock(&f->f_owner.lock);
local_irq_disable();
lock(&timer->lock);
lock(&new->fa_lock);
<Interrupt>
lock(&timer->lock);
*** DEADLOCK ***
4 locks held by syz-executor.3/23570:
#0: ffff8880298d8168 (&tu->ioctl_lock){+.+.}-{3:3}, at: snd_timer_user_ioctl+0x4d/0x80 sound/core/timer.c:2128
#1: ffff8880284dd148 (&timer->lock){..-.}-{2:2}, at: snd_timer_start1+0x5b/0x640 sound/core/timer.c:541
#2: ffffffff8c717d80 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0x5/0x30 include/linux/rcupdate.h:266
#3: ffff888034c750c0 (&new->fa_lock){.+.-}-{2:2}, at: kill_fasync_rcu fs/fcntl.c:1012 [inline]
#3: ffff888034c750c0 (&new->fa_lock){.+.-}-{2:2}, at: kill_fasync+0x13b/0x430 fs/fcntl.c:1033
the dependencies between SOFTIRQ-irq-safe lock and the holding lock:
-> (&timer->lock){..-.}-{2:2} {
IN-SOFTIRQ-W at:
lock_acquire+0x182/0x4a0 kernel/locking/lockdep.c:5625
__raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline]
_raw_spin_lock_irqsave+0xb3/0x100 kernel/locking/spinlock.c:159
snd_timer_interrupt+0x210/0x1410 sound/core/timer.c:857
call_timer_fn+0xf6/0x210 kernel/time/timer.c:1419
expire_timers kernel/time/timer.c:1464 [inline]
__run_timers+0x6ff/0x910 kernel/time/timer.c:1732
run_timer_softirq+0x63/0xf0 kernel/time/timer.c:1745
__do_softirq+0x372/0x783 kernel/softirq.c:558
invoke_softirq kernel/softirq.c:432 [inline]
__irq_exit_rcu+0x21b/0x260 kernel/softirq.c:636
irq_exit_rcu+0x5/0x20 kernel/softirq.c:648
sysvec_apic_timer_interrupt+0x91/0xb0 arch/x86/kernel/apic/apic.c:1100
asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:638
finish_lock_switch+0xf0/0x1c0 kernel/sched/core.c:4438
finish_task_switch+0x140/0x630 kernel/sched/core.c:4555
context_switch kernel/sched/core.c:4686 [inline]
__schedule+0xc0f/0x11f0 kernel/sched/core.c:5940
schedule+0x14b/0x210 kernel/sched/core.c:6019
freezable_schedule include/linux/freezer.h:172 [inline]
do_nanosleep+0x1b6/0x7b0 kernel/time/hrtimer.c:1896
hrtimer_nanosleep+0x239/0x470 kernel/time/hrtimer.c:1949
__do_sys_clock_nanosleep kernel/time/posix-timers.c:1267 [inline]
__se_sys_clock_nanosleep kernel/time/posix-timers.c:1245 [inline]
__x64_sys_clock_nanosleep+0x344/0x3d0 kernel/time/posix-timers.c:1245
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x44/0xae
INITIAL USE at:
lock_acquire+0x182/0x4a0 kernel/locking/lockdep.c:5625
__raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline]
_raw_spin_lock_irqsave+0xb3/0x100 kernel/locking/spinlock.c:159
snd_timer_resolution sound/core/timer.c:489 [inline]
snd_timer_user_params sound/core/timer.c:1852 [inline]
__snd_timer_user_ioctl+0x1df7/0x5ed0 sound/core/timer.c:2101
snd_timer_user_ioctl+0x5d/0x80 sound/core/timer.c:2129
vfs_ioctl fs/ioctl.c:51 [inline]
__do_sys_ioctl fs/ioctl.c:1069 [inline]
__se_sys_ioctl+0xfb/0x170 fs/ioctl.c:1055
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x44/0xae
}
... key at: [<ffffffff90b63220>] snd_timer_new.__key+0x0/0x40
-> (&new->fa_lock){.+.-}-{2:2} {
HARDIRQ-ON-R at:
lock_acquire+0x182/0x4a0 kernel/locking/lockdep.c:5625
__raw_read_lock include/linux/rwlock_api_smp.h:149 [inline]
_raw_read_lock+0x32/0x40 kernel/locking/spinlock.c:223
kill_fasync_rcu fs/fcntl.c:1012 [inline]
kill_fasync+0x13b/0x430 fs/fcntl.c:1033
sock_wake_async+0x133/0x150 net/socket.c:1354
rcu_read_unlock include/linux/rcupdate.h:716 [inline]
sk_wake_async+0x12e/0x200 include/net/sock.h:2328
sock_def_readable+0x152/0x200 net/core/sock.c:3017
mptcp_data_ready+0x431/0x720 net/mptcp/protocol.c:732
subflow_data_ready+0x3ae/0x690 net/mptcp/subflow.c:1281
tcp_data_queue+0x2b2f/0x8420 net/ipv4/tcp_input.c:5008
tcp_rcv_established+0x9f7/0x22b0 net/ipv4/tcp_input.c:5896
tcp_v6_do_rcv+0x4a9/0x12d0 net/ipv6/tcp_ipv6.c:1517
tcp_v6_rcv+0x36dc/0x4470 net/ipv6/tcp_ipv6.c:1759
ip6_protocol_deliver_rcu+0x9a5/0x1310 net/ipv6/ip6_input.c:422
ip6_input_finish net/ipv6/ip6_input.c:463 [inline]
NF_HOOK include/linux/netfilter.h:307 [inline]
ip6_input+0x10b/0x190 net/ipv6/ip6_input.c:472
ip_sabotage_in+0x1a1/0x220 net/bridge/br_netfilter_hooks.c:873
nf_hook_entry_hookfn include/linux/netfilter.h:142 [inline]
nf_hook_slow+0xb2/0x1f0 net/netfilter/core.c:589
nf_hook+0x21d/0x380 include/linux/netfilter.h:262
NF_HOOK include/linux/netfilter.h:305 [inline]
ipv6_rcv+0x87/0xd0 net/ipv6/ip6_input.c:297
__netif_receive_skb_one_core net/core/dev.c:5498 [inline]
__netif_receive_skb+0x1d1/0x500 net/core/dev.c:5612
netif_receive_skb_internal+0x107/0x340 net/core/dev.c:5717
netif_receive_skb+0x19/0x30 net/core/dev.c:5776
br_handle_frame_finish+0xab1/0x1670 net/bridge/br_input.c:156
br_nf_hook_thresh+0x3bb/0x4d0 net/bridge/br_netfilter_hooks.c:1025
br_nf_pre_routing_finish_ipv6+0x904/0xb50 net/bridge/br_netfilter_ipv6.c:187
NF_HOOK include/linux/netfilter.h:307 [inline]
br_nf_pre_routing_ipv6+0x294/0x340 net/bridge/br_netfilter_ipv6.c:236
nf_hook_entry_hookfn include/linux/netfilter.h:142 [inline]
nf_hook_bridge_pre net/bridge/br_input.c:225 [inline]
br_handle_frame+0x8c4/0x1120 net/bridge/br_input.c:368
__netif_receive_skb_core+0x14b8/0x3e70 net/core/dev.c:5392
__netif_receive_skb_one_core net/core/dev.c:5496 [inline]
__netif_receive_skb+0x120/0x500 net/core/dev.c:5612
process_backlog+0x4d8/0x940 net/core/dev.c:6492
__napi_poll+0xba/0x4f0 net/core/dev.c:7047
napi_poll net/core/dev.c:7114 [inline]
net_rx_action+0x62c/0xf30 net/core/dev.c:7201
__do_softirq+0x372/0x783 kernel/softirq.c:558
do_softirq+0x14a/0x210 kernel/softirq.c:459
__local_bh_enable_ip+0x184/0x1c0 kernel/softirq.c:383
rcu_read_unlock_bh include/linux/rcupdate.h:757 [inline]
ip6_finish_output2+0x1351/0x1870 net/ipv6/ip6_output.c:146
dst_output include/net/dst.h:448 [inline]
NF_HOOK include/linux/netfilter.h:307 [inline]
ip6_xmit+0xeba/0x1890 net/ipv6/ip6_output.c:348
inet6_csk_xmit+0x346/0x520 net/ipv6/inet6_connection_sock.c:135
__tcp_transmit_skb+0x1e63/0x3460 net/ipv4/tcp_output.c:1405
tcp_transmit_skb net/ipv4/tcp_output.c:1423 [inline]
tcp_write_xmit+0x19b0/0x7cb0 net/ipv4/tcp_output.c:2690
__tcp_push_pending_frames+0x8e/0x260 net/ipv4/tcp_output.c:2874
do_tcp_sendpages+0x1395/0x17d0 net/ipv4/tcp.c:1105
tcp_sendpage_locked net/ipv4/tcp.c:1131 [inline]
tcp_sendpage+0xa0/0xc0 net/ipv4/tcp.c:1141
inet_sendpage+0x16b/0x360 net/ipv4/af_inet.c:835
rds_tcp_xmit+0x5d9/0xb10 net/rds/tcp_send.c:118
rds_send_xmit+0x138d/0x26a0 net/rds/send.c:367
rds_send_worker+0x7d/0x2c0 net/rds/threads.c:200
process_one_work+0x833/0x10c0 kernel/workqueue.c:2276
worker_thread+0xac1/0x1320 kernel/workqueue.c:2422
kthread+0x453/0x480 kernel/kthread.c:319
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295
IN-SOFTIRQ-R at:
lock_acquire+0x182/0x4a0 kernel/locking/lockdep.c:5625
__raw_read_lock include/linux/rwlock_api_smp.h:149 [inline]
_raw_read_lock+0x32/0x40 kernel/locking/spinlock.c:223
kill_fasync_rcu fs/fcntl.c:1012 [inline]
kill_fasync+0x13b/0x430 fs/fcntl.c:1033
sock_wake_async+0x133/0x150 net/socket.c:1354
rcu_read_unlock include/linux/rcupdate.h:716 [inline]
sk_wake_async+0x12e/0x200 include/net/sock.h:2328
sock_def_readable+0x152/0x200 net/core/sock.c:3017
mptcp_data_ready+0x431/0x720 net/mptcp/protocol.c:732
subflow_data_ready+0x3ae/0x690 net/mptcp/subflow.c:1281
tcp_data_queue+0x2b2f/0x8420 net/ipv4/tcp_input.c:5008
tcp_rcv_established+0x9f7/0x22b0 net/ipv4/tcp_input.c:5896
tcp_v6_do_rcv+0x4a9/0x12d0 net/ipv6/tcp_ipv6.c:1517
tcp_v6_rcv+0x36dc/0x4470 net/ipv6/tcp_ipv6.c:1759
ip6_protocol_deliver_rcu+0x9a5/0x1310 net/ipv6/ip6_input.c:422
ip6_input_finish net/ipv6/ip6_input.c:463 [inline]
NF_HOOK include/linux/netfilter.h:307 [inline]
ip6_input+0x10b/0x190 net/ipv6/ip6_input.c:472
ip_sabotage_in+0x1a1/0x220 net/bridge/br_netfilter_hooks.c:873
nf_hook_entry_hookfn include/linux/netfilter.h:142 [inline]
nf_hook_slow+0xb2/0x1f0 net/netfilter/core.c:589
nf_hook+0x21d/0x380 include/linux/netfilter.h:262
NF_HOOK include/linux/netfilter.h:305 [inline]
ipv6_rcv+0x87/0xd0 net/ipv6/ip6_input.c:297
__netif_receive_skb_one_core net/core/dev.c:5498 [inline]
__netif_receive_skb+0x1d1/0x500 net/core/dev.c:5612
netif_receive_skb_internal+0x107/0x340 net/core/dev.c:5717
netif_receive_skb+0x19/0x30 net/core/dev.c:5776
br_handle_frame_finish+0xab1/0x1670 net/bridge/br_input.c:156
br_nf_hook_thresh+0x3bb/0x4d0 net/bridge/br_netfilter_hooks.c:1025
br_nf_pre_routing_finish_ipv6+0x904/0xb50 net/bridge/br_netfilter_ipv6.c:187
NF_HOOK include/linux/netfilter.h:307 [inline]
br_nf_pre_routing_ipv6+0x294/0x340 net/bridge/br_netfilter_ipv6.c:236
nf_hook_entry_hookfn include/linux/netfilter.h:142 [inline]
nf_hook_bridge_pre net/bridge/br_input.c:225 [inline]
br_handle_frame+0x8c4/0x1120 net/bridge/br_input.c:368
__netif_receive_skb_core+0x14b8/0x3e70 net/core/dev.c:5392
__netif_receive_skb_one_core net/core/dev.c:5496 [inline]
__netif_receive_skb+0x120/0x500 net/core/dev.c:5612
process_backlog+0x4d8/0x940 net/core/dev.c:6492
__napi_poll+0xba/0x4f0 net/core/dev.c:7047
napi_poll net/core/dev.c:7114 [inline]
net_rx_action+0x62c/0xf30 net/core/dev.c:7201
__do_softirq+0x372/0x783 kernel/softirq.c:558
do_softirq+0x14a/0x210 kernel/softirq.c:459
__local_bh_enable_ip+0x184/0x1c0 kernel/softirq.c:383
rcu_read_unlock_bh include/linux/rcupdate.h:757 [inline]
ip6_finish_output2+0x1351/0x1870 net/ipv6/ip6_output.c:146
dst_output include/net/dst.h:448 [inline]
NF_HOOK include/linux/netfilter.h:307 [inline]
ip6_xmit+0xeba/0x1890 net/ipv6/ip6_output.c:348
inet6_csk_xmit+0x346/0x520 net/ipv6/inet6_connection_sock.c:135
__tcp_transmit_skb+0x1e63/0x3460 net/ipv4/tcp_output.c:1405
tcp_transmit_skb net/ipv4/tcp_output.c:1423 [inline]
tcp_write_xmit+0x19b0/0x7cb0 net/ipv4/tcp_output.c:2690
__tcp_push_pending_frames+0x8e/0x260 net/ipv4/tcp_output.c:2874
do_tcp_sendpages+0x1395/0x17d0 net/ipv4/tcp.c:1105
tcp_sendpage_locked net/ipv4/tcp.c:1131 [inline]
tcp_sendpage+0xa0/0xc0 net/ipv4/tcp.c:1141
inet_sendpage+0x16b/0x360 net/ipv4/af_inet.c:835
rds_tcp_xmit+0x5d9/0xb10 net/rds/tcp_send.c:118
rds_send_xmit+0x138d/0x26a0 net/rds/send.c:367
rds_send_worker+0x7d/0x2c0 net/rds/threads.c:200
process_one_work+0x833/0x10c0 kernel/workqueue.c:2276
worker_thread+0xac1/0x1320 kernel/workqueue.c:2422
kthread+0x453/0x480 kernel/kthread.c:319
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295
INITIAL USE at:
lock_acquire+0x182/0x4a0 kernel/locking/lockdep.c:5625
__raw_write_lock_irq include/linux/rwlock_api_smp.h:196 [inline]
_raw_write_lock_irq+0xae/0xf0 kernel/locking/spinlock.c:311
fasync_remove_entry+0xff/0x1d0 fs/fcntl.c:890
sock_fasync+0x86/0xf0 net/socket.c:1325
__fput+0x65b/0x7b0 fs/file_table.c:277
task_work_run+0x146/0x1c0 kernel/task_work.c:164
tracehook_notify_resume include/linux/tracehook.h:189 [inline]
exit_to_user_mode_loop kernel/entry/common.c:175 [inline]
exit_to_user_mode_prepare+0x201/0x220 kernel/entry/common.c:209
__syscall_exit_to_user_mode_work kernel/entry/common.c:291 [inline]
syscall_exit_to_user_mode+0x26/0x60 kernel/entry/common.c:302
do_syscall_64+0x4c/0xb0 arch/x86/entry/common.c:86
entry_SYSCALL_64_after_hwframe+0x44/0xae
INITIAL READ USE at:
lock_acquire+0x182/0x4a0 kernel/locking/lockdep.c:5625
__raw_read_lock include/linux/rwlock_api_smp.h:149 [inline]
_raw_read_lock+0x32/0x40 kernel/locking/spinlock.c:223
kill_fasync_rcu fs/fcntl.c:1012 [inline]
kill_fasync+0x13b/0x430 fs/fcntl.c:1033
sock_wake_async+0x133/0x150 net/socket.c:1354
rcu_read_unlock include/linux/rcupdate.h:716 [inline]
sk_wake_async+0x12e/0x200 include/net/sock.h:2328
sock_def_readable+0x152/0x200 net/core/sock.c:3017
mptcp_data_ready+0x431/0x720 net/mptcp/protocol.c:732
subflow_data_ready+0x3ae/0x690 net/mptcp/subflow.c:1281
tcp_data_queue+0x2b2f/0x8420 net/ipv4/tcp_input.c:5008
tcp_rcv_established+0x9f7/0x22b0 net/ipv4/tcp_input.c:5896
tcp_v6_do_rcv+0x4a9/0x12d0 net/ipv6/tcp_ipv6.c:1517
tcp_v6_rcv+0x36dc/0x4470 net/ipv6/tcp_ipv6.c:1759
ip6_protocol_deliver_rcu+0x9a5/0x1310 net/ipv6/ip6_input.c:422
ip6_input_finish net/ipv6/ip6_input.c:463 [inline]
NF_HOOK include/linux/netfilter.h:307 [inline]
ip6_input+0x10b/0x190 net/ipv6/ip6_input.c:472
ip_sabotage_in+0x1a1/0x220 net/bridge/br_netfilter_hooks.c:873
nf_hook_entry_hookfn include/linux/netfilter.h:142 [inline]
nf_hook_slow+0xb2/0x1f0 net/netfilter/core.c:589
nf_hook+0x21d/0x380 include/linux/netfilter.h:262
NF_HOOK include/linux/netfilter.h:305 [inline]
ipv6_rcv+0x87/0xd0 net/ipv6/ip6_input.c:297
__netif_receive_skb_one_core net/core/dev.c:5498 [inline]
__netif_receive_skb+0x1d1/0x500 net/core/dev.c:5612
netif_receive_skb_internal+0x107/0x340 net/core/dev.c:5717
netif_receive_skb+0x19/0x30 net/core/dev.c:5776
br_handle_frame_finish+0xab1/0x1670 net/bridge/br_input.c:156
br_nf_hook_thresh+0x3bb/0x4d0 net/bridge/br_netfilter_hooks.c:1025
br_nf_pre_routing_finish_ipv6+0x904/0xb50 net/bridge/br_netfilter_ipv6.c:187
NF_HOOK include/linux/netfilter.h:307 [inline]
br_nf_pre_routing_ipv6+0x294/0x340 net/bridge/br_netfilter_ipv6.c:236
nf_hook_entry_hookfn include/linux/netfilter.h:142 [inline]
nf_hook_bridge_pre net/bridge/br_input.c:225 [inline]
br_handle_frame+0x8c4/0x1120 net/bridge/br_input.c:368
__netif_receive_skb_core+0x14b8/0x3e70 net/core/dev.c:5392
__netif_receive_skb_one_core net/core/dev.c:5496 [inline]
__netif_receive_skb+0x120/0x500 net/core/dev.c:5612
process_backlog+0x4d8/0x940 net/core/dev.c:6492
__napi_poll+0xba/0x4f0 net/core/dev.c:7047
napi_poll net/core/dev.c:7114 [inline]
net_rx_action+0x62c/0xf30 net/core/dev.c:7201
__do_softirq+0x372/0x783 kernel/softirq.c:558
do_softirq+0x14a/0x210 kernel/softirq.c:459
__local_bh_enable_ip+0x184/0x1c0 kernel/softirq.c:383
rcu_read_unlock_bh include/linux/rcupdate.h:757 [inline]
ip6_finish_output2+0x1351/0x1870 net/ipv6/ip6_output.c:146
dst_output include/net/dst.h:448 [inline]
NF_HOOK include/linux/netfilter.h:307 [inline]
ip6_xmit+0xeba/0x1890 net/ipv6/ip6_output.c:348
inet6_csk_xmit+0x346/0x520 net/ipv6/inet6_connection_sock.c:135
__tcp_transmit_skb+0x1e63/0x3460 net/ipv4/tcp_output.c:1405
tcp_transmit_skb net/ipv4/tcp_output.c:1423 [inline]
tcp_write_xmit+0x19b0/0x7cb0 net/ipv4/tcp_output.c:2690
__tcp_push_pending_frames+0x8e/0x260 net/ipv4/tcp_output.c:2874
do_tcp_sendpages+0x1395/0x17d0 net/ipv4/tcp.c:1105
tcp_sendpage_locked net/ipv4/tcp.c:1131 [inline]
tcp_sendpage+0xa0/0xc0 net/ipv4/tcp.c:1141
inet_sendpage+0x16b/0x360 net/ipv4/af_inet.c:835
rds_tcp_xmit+0x5d9/0xb10 net/rds/tcp_send.c:118
rds_send_xmit+0x138d/0x26a0 net/rds/send.c:367
rds_send_worker+0x7d/0x2c0 net/rds/threads.c:200
process_one_work+0x833/0x10c0 kernel/workqueue.c:2276
worker_thread+0xac1/0x1320 kernel/workqueue.c:2422
kthread+0x453/0x480 kernel/kthread.c:319
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295
}
... key at: [<ffffffff907d4360>] fasync_insert_entry.__key+0x0/0x40
... acquired at:
lock_acquire+0x182/0x4a0 kernel/locking/lockdep.c:5625
__raw_read_lock include/linux/rwlock_api_smp.h:149 [inline]
_raw_read_lock+0x32/0x40 kernel/locking/spinlock.c:223
kill_fasync_rcu fs/fcntl.c:1012 [inline]
kill_fasync+0x13b/0x430 fs/fcntl.c:1033
snd_timer_user_ccallback+0x3ee/0x710 sound/core/timer.c:1387
snd_timer_notify1+0x19e/0x340 sound/core/timer.c:516
snd_timer_start1+0x53d/0x640 sound/core/timer.c:578
snd_timer_start sound/core/timer.c:697 [inline]
snd_timer_user_start sound/core/timer.c:1985 [inline]
snd_timer_user_continue sound/core/timer.c:2015 [inline]
__snd_timer_user_ioctl+0x1aa2/0x5ed0 sound/core/timer.c:2114
snd_timer_user_ioctl+0x5d/0x80 sound/core/timer.c:2129
vfs_ioctl fs/ioctl.c:51 [inline]
__do_sys_ioctl fs/ioctl.c:1069 [inline]
__se_sys_ioctl+0xfb/0x170 fs/ioctl.c:1055
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x44/0xae
the dependencies between the lock to be acquired
and SOFTIRQ-irq-unsafe lock:
-> (&f->f_owner.lock){.+.?}-{2:2} {
HARDIRQ-ON-R at:
lock_acquire+0x182/0x4a0 kernel/locking/lockdep.c:5625
__raw_read_lock include/linux/rwlock_api_smp.h:149 [inline]
_raw_read_lock+0x32/0x40 kernel/locking/spinlock.c:223
f_getown_ex fs/fcntl.c:211 [inline]
do_fcntl+0x150/0x1510 fs/fcntl.c:395
__do_sys_fcntl fs/fcntl.c:471 [inline]
__se_sys_fcntl+0xd8/0x1b0 fs/fcntl.c:456
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x44/0xae
IN-SOFTIRQ-R at:
lock_acquire+0x182/0x4a0 kernel/locking/lockdep.c:5625
__raw_read_lock_irqsave include/linux/rwlock_api_smp.h:159 [inline]
_raw_read_lock_irqsave+0xbb/0x100 kernel/locking/spinlock.c:231
send_sigio+0x2f/0x300 fs/fcntl.c:795
kill_fasync_rcu fs/fcntl.c:1019 [inline]
kill_fasync+0x1e3/0x430 fs/fcntl.c:1033
sock_wake_async+0x133/0x150 net/socket.c:1354
rcu_read_unlock include/linux/rcupdate.h:716 [inline]
sk_wake_async+0x12e/0x200 include/net/sock.h:2328
sock_def_readable+0x152/0x200 net/core/sock.c:3017
mptcp_data_ready+0x431/0x720 net/mptcp/protocol.c:732
subflow_data_ready+0x3ae/0x690 net/mptcp/subflow.c:1281
tcp_data_queue+0x2b2f/0x8420 net/ipv4/tcp_input.c:5008
tcp_rcv_established+0x9f7/0x22b0 net/ipv4/tcp_input.c:5896
tcp_v6_do_rcv+0x4a9/0x12d0 net/ipv6/tcp_ipv6.c:1517
tcp_v6_rcv+0x36dc/0x4470 net/ipv6/tcp_ipv6.c:1759
ip6_protocol_deliver_rcu+0x9a5/0x1310 net/ipv6/ip6_input.c:422
ip6_input_finish net/ipv6/ip6_input.c:463 [inline]
NF_HOOK include/linux/netfilter.h:307 [inline]
ip6_input+0x10b/0x190 net/ipv6/ip6_input.c:472
ip_sabotage_in+0x1a1/0x220 net/bridge/br_netfilter_hooks.c:873
nf_hook_entry_hookfn include/linux/netfilter.h:142 [inline]
nf_hook_slow+0xb2/0x1f0 net/netfilter/core.c:589
nf_hook+0x21d/0x380 include/linux/netfilter.h:262
NF_HOOK include/linux/netfilter.h:305 [inline]
ipv6_rcv+0x87/0xd0 net/ipv6/ip6_input.c:297
__netif_receive_skb_one_core net/core/dev.c:5498 [inline]
__netif_receive_skb+0x1d1/0x500 net/core/dev.c:5612
netif_receive_skb_internal+0x107/0x340 net/core/dev.c:5717
netif_receive_skb+0x19/0x30 net/core/dev.c:5776
br_handle_frame_finish+0xab1/0x1670 net/bridge/br_input.c:156
br_nf_hook_thresh+0x3bb/0x4d0 net/bridge/br_netfilter_hooks.c:1025
br_nf_pre_routing_finish_ipv6+0x904/0xb50 net/bridge/br_netfilter_ipv6.c:187
NF_HOOK include/linux/netfilter.h:307 [inline]
br_nf_pre_routing_ipv6+0x294/0x340 net/bridge/br_netfilter_ipv6.c:236
nf_hook_entry_hookfn include/linux/netfilter.h:142 [inline]
nf_hook_bridge_pre net/bridge/br_input.c:225 [inline]
br_handle_frame+0x8c4/0x1120 net/bridge/br_input.c:368
__netif_receive_skb_core+0x14b8/0x3e70 net/core/dev.c:5392
__netif_receive_skb_one_core net/core/dev.c:5496 [inline]
__netif_receive_skb+0x120/0x500 net/core/dev.c:5612
process_backlog+0x4d8/0x940 net/core/dev.c:6492
__napi_poll+0xba/0x4f0 net/core/dev.c:7047
napi_poll net/core/dev.c:7114 [inline]
net_rx_action+0x62c/0xf30 net/core/dev.c:7201
__do_softirq+0x372/0x783 kernel/softirq.c:558
do_softirq+0x14a/0x210 kernel/softirq.c:459
__local_bh_enable_ip+0x184/0x1c0 kernel/softirq.c:383
rcu_read_unlock_bh include/linux/rcupdate.h:757 [inline]
ip6_finish_output2+0x1351/0x1870 net/ipv6/ip6_output.c:146
dst_output include/net/dst.h:448 [inline]
NF_HOOK include/linux/netfilter.h:307 [inline]
ip6_xmit+0xeba/0x1890 net/ipv6/ip6_output.c:348
inet6_csk_xmit+0x346/0x520 net/ipv6/inet6_connection_sock.c:135
__tcp_transmit_skb+0x1e63/0x3460 net/ipv4/tcp_output.c:1405
tcp_transmit_skb net/ipv4/tcp_output.c:1423 [inline]
tcp_write_xmit+0x19b0/0x7cb0 net/ipv4/tcp_output.c:2690
__tcp_push_pending_frames+0x8e/0x260 net/ipv4/tcp_output.c:2874
do_tcp_sendpages+0x1395/0x17d0 net/ipv4/tcp.c:1105
tcp_sendpage_locked net/ipv4/tcp.c:1131 [inline]
tcp_sendpage+0xa0/0xc0 net/ipv4/tcp.c:1141
inet_sendpage+0x16b/0x360 net/ipv4/af_inet.c:835
rds_tcp_xmit+0x5d9/0xb10 net/rds/tcp_send.c:118
rds_send_xmit+0x138d/0x26a0 net/rds/send.c:367
rds_send_worker+0x7d/0x2c0 net/rds/threads.c:200
process_one_work+0x833/0x10c0 kernel/workqueue.c:2276
worker_thread+0xac1/0x1320 kernel/workqueue.c:2422
kthread+0x453/0x480 kernel/kthread.c:319
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295
SOFTIRQ-ON-R at:
lock_acquire+0x182/0x4a0 kernel/locking/lockdep.c:5625
__raw_read_lock include/linux/rwlock_api_smp.h:149 [inline]
_raw_read_lock+0x32/0x40 kernel/locking/spinlock.c:223
f_getown_ex fs/fcntl.c:211 [inline]
do_fcntl+0x150/0x1510 fs/fcntl.c:395
__do_sys_fcntl fs/fcntl.c:471 [inline]
__se_sys_fcntl+0xd8/0x1b0 fs/fcntl.c:456
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x44/0xae
INITIAL USE at:
lock_acquire+0x182/0x4a0 kernel/locking/lockdep.c:5625
__raw_write_lock_irq include/linux/rwlock_api_smp.h:196 [inline]
_raw_write_lock_irq+0xae/0xf0 kernel/locking/spinlock.c:311
f_modown+0x38/0x340 fs/fcntl.c:91
__f_setown fs/fcntl.c:110 [inline]
f_setown+0x113/0x1a0 fs/fcntl.c:138
do_fcntl+0x195/0x1510 fs/fcntl.c:392
__do_sys_fcntl fs/fcntl.c:471 [inline]
__se_sys_fcntl+0xd8/0x1b0 fs/fcntl.c:456
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x44/0xae
INITIAL READ USE at:
lock_acquire+0x182/0x4a0 kernel/locking/lockdep.c:5625
__raw_read_lock_irqsave include/linux/rwlock_api_smp.h:159 [inline]
_raw_read_lock_irqsave+0xbb/0x100 kernel/locking/spinlock.c:231
send_sigio+0x2f/0x300 fs/fcntl.c:795
kill_fasync_rcu fs/fcntl.c:1019 [inline]
kill_fasync+0x1e3/0x430 fs/fcntl.c:1033
sock_wake_async+0x133/0x150 net/socket.c:1354
rcu_read_unlock include/linux/rcupdate.h:716 [inline]
sk_wake_async+0x12e/0x200 include/net/sock.h:2328
sock_def_readable+0x152/0x200 net/core/sock.c:3017
mptcp_data_ready+0x431/0x720 net/mptcp/protocol.c:732
subflow_data_ready+0x3ae/0x690 net/mptcp/subflow.c:1281
tcp_data_queue+0x2b2f/0x8420 net/ipv4/tcp_input.c:5008
tcp_rcv_established+0x9f7/0x22b0 net/ipv4/tcp_input.c:5896
tcp_v6_do_rcv+0x4a9/0x12d0 net/ipv6/tcp_ipv6.c:1517
tcp_v6_rcv+0x36dc/0x4470 net/ipv6/tcp_ipv6.c:1759
ip6_protocol_deliver_rcu+0x9a5/0x1310 net/ipv6/ip6_input.c:422
ip6_input_finish net/ipv6/ip6_input.c:463 [inline]
NF_HOOK include/linux/netfilter.h:307 [inline]
ip6_input+0x10b/0x190 net/ipv6/ip6_input.c:472
ip_sabotage_in+0x1a1/0x220 net/bridge/br_netfilter_hooks.c:873
nf_hook_entry_hookfn include/linux/netfilter.h:142 [inline]
nf_hook_slow+0xb2/0x1f0 net/netfilter/core.c:589
nf_hook+0x21d/0x380 include/linux/netfilter.h:262
NF_HOOK include/linux/netfilter.h:305 [inline]
ipv6_rcv+0x87/0xd0 net/ipv6/ip6_input.c:297
__netif_receive_skb_one_core net/core/dev.c:5498 [inline]
__netif_receive_skb+0x1d1/0x500 net/core/dev.c:5612
netif_receive_skb_internal+0x107/0x340 net/core/dev.c:5717
netif_receive_skb+0x19/0x30 net/core/dev.c:5776
br_handle_frame_finish+0xab1/0x1670 net/bridge/br_input.c:156
br_nf_hook_thresh+0x3bb/0x4d0 net/bridge/br_netfilter_hooks.c:1025
br_nf_pre_routing_finish_ipv6+0x904/0xb50 net/bridge/br_netfilter_ipv6.c:187
NF_HOOK include/linux/netfilter.h:307 [inline]
br_nf_pre_routing_ipv6+0x294/0x340 net/bridge/br_netfilter_ipv6.c:236
nf_hook_entry_hookfn include/linux/netfilter.h:142 [inline]
nf_hook_bridge_pre net/bridge/br_input.c:225 [inline]
br_handle_frame+0x8c4/0x1120 net/bridge/br_input.c:368
__netif_receive_skb_core+0x14b8/0x3e70 net/core/dev.c:5392
__netif_receive_skb_one_core net/core/dev.c:5496 [inline]
__netif_receive_skb+0x120/0x500 net/core/dev.c:5612
process_backlog+0x4d8/0x940 net/core/dev.c:6492
__napi_poll+0xba/0x4f0 net/core/dev.c:7047
napi_poll net/core/dev.c:7114 [inline]
net_rx_action+0x62c/0xf30 net/core/dev.c:7201
__do_softirq+0x372/0x783 kernel/softirq.c:558
do_softirq+0x14a/0x210 kernel/softirq.c:459
__local_bh_enable_ip+0x184/0x1c0 kernel/softirq.c:383
rcu_read_unlock_bh include/linux/rcupdate.h:757 [inline]
ip6_finish_output2+0x1351/0x1870 net/ipv6/ip6_output.c:146
dst_output include/net/dst.h:448 [inline]
NF_HOOK include/linux/netfilter.h:307 [inline]
ip6_xmit+0xeba/0x1890 net/ipv6/ip6_output.c:348
inet6_csk_xmit+0x346/0x520 net/ipv6/inet6_connection_sock.c:135
__tcp_transmit_skb+0x1e63/0x3460 net/ipv4/tcp_output.c:1405
tcp_transmit_skb net/ipv4/tcp_output.c:1423 [inline]
tcp_write_xmit+0x19b0/0x7cb0 net/ipv4/tcp_output.c:2690
__tcp_push_pending_frames+0x8e/0x260 net/ipv4/tcp_output.c:2874
do_tcp_sendpages+0x1395/0x17d0 net/ipv4/tcp.c:1105
tcp_sendpage_locked net/ipv4/tcp.c:1131 [inline]
tcp_sendpage+0xa0/0xc0 net/ipv4/tcp.c:1141
inet_sendpage+0x16b/0x360 net/ipv4/af_inet.c:835
rds_tcp_xmit+0x5d9/0xb10 net/rds/tcp_send.c:118
rds_send_xmit+0x138d/0x26a0 net/rds/send.c:367
rds_send_worker+0x7d/0x2c0 net/rds/threads.c:200
process_one_work+0x833/0x10c0 kernel/workqueue.c:2276
worker_thread+0xac1/0x1320 kernel/workqueue.c:2422
kthread+0x453/0x480 kernel/kthread.c:319
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295
}
... key at: [<ffffffff907d34a0>] __alloc_file.__key+0x0/0x10
... acquired at:
lock_acquire+0x182/0x4a0 kernel/locking/lockdep.c:5625
__raw_read_lock_irqsave include/linux/rwlock_api_smp.h:159 [inline]
_raw_read_lock_irqsave+0xbb/0x100 kernel/locking/spinlock.c:231
send_sigio+0x2f/0x300 fs/fcntl.c:795
kill_fasync_rcu fs/fcntl.c:1019 [inline]
kill_fasync+0x1e3/0x430 fs/fcntl.c:1033
snd_timer_user_ccallback+0x3ee/0x710 sound/core/timer.c:1387
snd_timer_notify1+0x19e/0x340 sound/core/timer.c:516
snd_timer_start1+0x53d/0x640 sound/core/timer.c:578
snd_timer_start sound/core/timer.c:697 [inline]
snd_timer_user_start sound/core/timer.c:1985 [inline]
snd_timer_user_continue sound/core/timer.c:2015 [inline]
__snd_timer_user_ioctl+0x1aa2/0x5ed0 sound/core/timer.c:2114
snd_timer_user_ioctl+0x5d/0x80 sound/core/timer.c:2129
vfs_ioctl fs/ioctl.c:51 [inline]
__do_sys_ioctl fs/ioctl.c:1069 [inline]
__se_sys_ioctl+0xfb/0x170 fs/ioctl.c:1055
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x44/0xae
stack backtrace:
CPU: 1 PID: 23570 Comm: syz-executor.3 Not tainted 5.14.0-rc4-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0x1ae/0x29f lib/dump_stack.c:105
print_bad_irq_dependency kernel/locking/lockdep.c:2565 [inline]
check_irq_usage kernel/locking/lockdep.c:2804 [inline]
check_prev_add kernel/locking/lockdep.c:3055 [inline]
check_prevs_add+0x4eaa/0x5b30 kernel/locking/lockdep.c:3174
validate_chain kernel/locking/lockdep.c:3789 [inline]
__lock_acquire+0x4476/0x6100 kernel/locking/lockdep.c:5015
lock_acquire+0x182/0x4a0 kernel/locking/lockdep.c:5625
__raw_read_lock_irqsave include/linux/rwlock_api_smp.h:159 [inline]
_raw_read_lock_irqsave+0xbb/0x100 kernel/locking/spinlock.c:231
send_sigio+0x2f/0x300 fs/fcntl.c:795
kill_fasync_rcu fs/fcntl.c:1019 [inline]
kill_fasync+0x1e3/0x430 fs/fcntl.c:1033
snd_timer_user_ccallback+0x3ee/0x710 sound/core/timer.c:1387
snd_timer_notify1+0x19e/0x340 sound/core/timer.c:516
snd_timer_start1+0x53d/0x640 sound/core/timer.c:578
snd_timer_start sound/core/timer.c:697 [inline]
snd_timer_user_start sound/core/timer.c:1985 [inline]
snd_timer_user_continue sound/core/timer.c:2015 [inline]
__snd_timer_user_ioctl+0x1aa2/0x5ed0 sound/core/timer.c:2114
snd_timer_user_ioctl+0x5d/0x80 sound/core/timer.c:2129
vfs_ioctl fs/ioctl.c:51 [inline]
__do_sys_ioctl fs/ioctl.c:1069 [inline]
__se_sys_ioctl+0xfb/0x170 fs/ioctl.c:1055
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x4665e9
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 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 bc ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007faae730d188 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 000000000056c038 RCX: 00000000004665e9
RDX: 0000000000000000 RSI: 00000000000054a2 RDI: 0000000000000003
RBP: 00000000004bfcc4 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 000000000056c038
R13: 00007ffe5f5156bf R14: 00007faae730d300 R15: 0000000000022000