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Message-ID: <000000000000236c3705f9d57bf9@google.com>
Date: Fri, 21 Apr 2023 02:42:52 -0700
From: syzbot <syzbot+13d3cb2a3dc61e6092f5@...kaller.appspotmail.com>
To: brauner@...nel.org, chuck.lever@...cle.com, jlayton@...nel.org,
linux-fsdevel@...r.kernel.org, linux-kernel@...r.kernel.org,
syzkaller-bugs@...glegroups.com, viro@...iv.linux.org.uk
Subject: [syzbot] [fs?] possible deadlock in evdev_pass_values (2)
Hello,
syzbot found the following issue on:
HEAD commit: 789b4a41c247 Merge tag 'nfsd-6.3-6' of git://git.kernel.or..
git tree: upstream
console output: https://syzkaller.appspot.com/x/log.txt?x=118040dbc80000
kernel config: https://syzkaller.appspot.com/x/.config?x=11869c60f54496a7
dashboard link: https://syzkaller.appspot.com/bug?extid=13d3cb2a3dc61e6092f5
compiler: gcc (Debian 10.2.1-6) 10.2.1 20210110, GNU ld (GNU Binutils for Debian) 2.35.2
Unfortunately, I don't have any reproducer for this issue yet.
Downloadable assets:
disk image: https://storage.googleapis.com/syzbot-assets/90f29018f16a/disk-789b4a41.raw.xz
vmlinux: https://storage.googleapis.com/syzbot-assets/ac188d8e85c0/vmlinux-789b4a41.xz
kernel image: https://storage.googleapis.com/syzbot-assets/1d8c814b8041/bzImage-789b4a41.xz
IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+13d3cb2a3dc61e6092f5@...kaller.appspotmail.com
=====================================================
WARNING: SOFTIRQ-safe -> SOFTIRQ-unsafe lock order detected
6.3.0-rc7-syzkaller-00060-g789b4a41c247 #0 Not tainted
-----------------------------------------------------
syz-executor.5/27899 [HC0[0]:SC0[0]:HE0:SE1] is trying to acquire:
ffffffff8c40a098 (tasklist_lock){.+.+}-{2:2}, at: send_sigio+0xaf/0x3b0 fs/fcntl.c:793
and this task is already holding:
ffff88802a901a30 (&f->f_owner.lock){...-}-{2:2}, at: send_sigio+0x28/0x3b0 fs/fcntl.c:779
which would create a new lock dependency:
(&f->f_owner.lock){...-}-{2:2} -> (tasklist_lock){.+.+}-{2:2}
but this new dependency connects a SOFTIRQ-irq-safe lock:
(&client->buffer_lock){..-.}-{2:2}
... which became SOFTIRQ-irq-safe at:
lock_acquire kernel/locking/lockdep.c:5669 [inline]
lock_acquire+0x1af/0x520 kernel/locking/lockdep.c:5634
__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:350 [inline]
evdev_pass_values.part.0+0xf6/0x960 drivers/input/evdev.c:261
evdev_pass_values drivers/input/evdev.c:253 [inline]
evdev_events+0x3b4/0x430 drivers/input/evdev.c:306
input_to_handler+0x2a0/0x4c0 drivers/input/input.c:129
input_pass_values.part.0+0x230/0x760 drivers/input/input.c:161
input_pass_values drivers/input/input.c:148 [inline]
input_event_dispose+0x5cf/0x730 drivers/input/input.c:376
input_handle_event+0x120/0xe70 drivers/input/input.c:404
input_event drivers/input/input.c:433 [inline]
input_event+0x83/0xa0 drivers/input/input.c:425
input_sync include/linux/input.h:450 [inline]
hidinput_report_event+0xb2/0x100 drivers/hid/hid-input.c:1716
hid_report_raw_event+0x35a/0x1220 drivers/hid/hid-core.c:2016
hid_input_report+0x341/0x440 drivers/hid/hid-core.c:2083
hid_irq_in+0x357/0x840 drivers/hid/usbhid/hid-core.c:284
__usb_hcd_giveback_urb+0x2b6/0x5c0 drivers/usb/core/hcd.c:1671
usb_hcd_giveback_urb+0x384/0x430 drivers/usb/core/hcd.c:1754
dummy_timer+0x13b6/0x3400 drivers/usb/gadget/udc/dummy_hcd.c:1988
call_timer_fn+0x1a0/0x580 kernel/time/timer.c:1700
expire_timers+0x29b/0x4b0 kernel/time/timer.c:1751
__run_timers kernel/time/timer.c:2022 [inline]
__run_timers kernel/time/timer.c:1995 [inline]
run_timer_softirq+0x326/0x910 kernel/time/timer.c:2035
__do_softirq+0x1d4/0x905 kernel/softirq.c:571
invoke_softirq kernel/softirq.c:445 [inline]
__irq_exit_rcu+0x114/0x190 kernel/softirq.c:650
irq_exit_rcu+0x9/0x20 kernel/softirq.c:662
sysvec_apic_timer_interrupt+0x97/0xc0 arch/x86/kernel/apic/apic.c:1107
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:645
native_safe_halt arch/x86/include/asm/irqflags.h:48 [inline]
arch_safe_halt arch/x86/include/asm/irqflags.h:86 [inline]
acpi_safe_halt+0x40/0x50 drivers/acpi/processor_idle.c:112
acpi_idle_do_entry+0x53/0x70 drivers/acpi/processor_idle.c:573
acpi_idle_enter+0x173/0x290 drivers/acpi/processor_idle.c:711
cpuidle_enter_state+0xd3/0x6f0 drivers/cpuidle/cpuidle.c:267
cpuidle_enter+0x4e/0xa0 drivers/cpuidle/cpuidle.c:388
cpuidle_idle_call kernel/sched/idle.c:215 [inline]
do_idle+0x305/0x3e0 kernel/sched/idle.c:282
cpu_startup_entry+0x18/0x20 kernel/sched/idle.c:379
rest_init+0x16d/0x2b0 init/main.c:736
arch_call_rest_init+0x13/0x30 init/main.c:898
start_kernel+0x35a/0x4d0 init/main.c:1152
secondary_startup_64_no_verify+0xce/0xdb
to a SOFTIRQ-irq-unsafe lock:
(tasklist_lock){.+.+}-{2:2}
... which became SOFTIRQ-irq-unsafe at:
...
lock_acquire kernel/locking/lockdep.c:5669 [inline]
lock_acquire+0x1af/0x520 kernel/locking/lockdep.c:5634
__raw_read_lock include/linux/rwlock_api_smp.h:150 [inline]
_raw_read_lock+0x5f/0x70 kernel/locking/spinlock.c:228
do_wait+0x283/0xc30 kernel/exit.c:1602
kernel_wait+0xa0/0x150 kernel/exit.c:1792
call_usermodehelper_exec_sync kernel/umh.c:137 [inline]
call_usermodehelper_exec_work+0xf9/0x180 kernel/umh.c:164
process_one_work+0x991/0x15c0 kernel/workqueue.c:2390
worker_thread+0x669/0x1090 kernel/workqueue.c:2537
kthread+0x2e8/0x3a0 kernel/kthread.c:376
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308
other info that might help us debug this:
Chain exists of:
&client->buffer_lock --> &f->f_owner.lock --> tasklist_lock
Possible interrupt unsafe locking scenario:
CPU0 CPU1
---- ----
lock(tasklist_lock);
local_irq_disable();
lock(&client->buffer_lock);
lock(&f->f_owner.lock);
<Interrupt>
lock(&client->buffer_lock);
*** DEADLOCK ***
5 locks held by syz-executor.5/27899:
#0: ffffffff8c978ef0 (file_rwsem){.+.+}-{0:0}, at: break_lease include/linux/filelock.h:360 [inline]
#0: ffffffff8c978ef0 (file_rwsem){.+.+}-{0:0}, at: break_lease include/linux/filelock.h:350 [inline]
#0: ffffffff8c978ef0 (file_rwsem){.+.+}-{0:0}, at: do_dentry_open+0x65e/0x13f0 fs/open.c:911
#1: ffff88801d8dcbc8 (&ctx->flc_lock){+.+.}-{2:2}, at: spin_lock include/linux/spinlock.h:350 [inline]
#1: ffff88801d8dcbc8 (&ctx->flc_lock){+.+.}-{2:2}, at: __break_lease+0x20c/0x12d0 fs/locks.c:1494
#2: ffffffff8c7955c0 (rcu_read_lock){....}-{1:2}, at: kill_fasync+0x45/0x4f0 fs/fcntl.c:1016
#3: ffff88807bdf6c90 (&new->fa_lock){....}-{2:2}, at: kill_fasync_rcu fs/fcntl.c:997 [inline]
#3: ffff88807bdf6c90 (&new->fa_lock){....}-{2:2}, at: kill_fasync fs/fcntl.c:1018 [inline]
#3: ffff88807bdf6c90 (&new->fa_lock){....}-{2:2}, at: kill_fasync+0x139/0x4f0 fs/fcntl.c:1011
#4: ffff88802a901a30 (&f->f_owner.lock){...-}-{2:2}, at: send_sigio+0x28/0x3b0 fs/fcntl.c:779
the dependencies between SOFTIRQ-irq-safe lock and the holding lock:
-> (&client->buffer_lock){..-.}-{2:2} {
IN-SOFTIRQ-W at:
lock_acquire kernel/locking/lockdep.c:5669 [inline]
lock_acquire+0x1af/0x520 kernel/locking/lockdep.c:5634
__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:350 [inline]
evdev_pass_values.part.0+0xf6/0x960 drivers/input/evdev.c:261
evdev_pass_values drivers/input/evdev.c:253 [inline]
evdev_events+0x3b4/0x430 drivers/input/evdev.c:306
input_to_handler+0x2a0/0x4c0 drivers/input/input.c:129
input_pass_values.part.0+0x230/0x760 drivers/input/input.c:161
input_pass_values drivers/input/input.c:148 [inline]
input_event_dispose+0x5cf/0x730 drivers/input/input.c:376
input_handle_event+0x120/0xe70 drivers/input/input.c:404
input_event drivers/input/input.c:433 [inline]
input_event+0x83/0xa0 drivers/input/input.c:425
input_sync include/linux/input.h:450 [inline]
hidinput_report_event+0xb2/0x100 drivers/hid/hid-input.c:1716
hid_report_raw_event+0x35a/0x1220 drivers/hid/hid-core.c:2016
hid_input_report+0x341/0x440 drivers/hid/hid-core.c:2083
hid_irq_in+0x357/0x840 drivers/hid/usbhid/hid-core.c:284
__usb_hcd_giveback_urb+0x2b6/0x5c0 drivers/usb/core/hcd.c:1671
usb_hcd_giveback_urb+0x384/0x430 drivers/usb/core/hcd.c:1754
dummy_timer+0x13b6/0x3400 drivers/usb/gadget/udc/dummy_hcd.c:1988
call_timer_fn+0x1a0/0x580 kernel/time/timer.c:1700
expire_timers+0x29b/0x4b0 kernel/time/timer.c:1751
__run_timers kernel/time/timer.c:2022 [inline]
__run_timers kernel/time/timer.c:1995 [inline]
run_timer_softirq+0x326/0x910 kernel/time/timer.c:2035
__do_softirq+0x1d4/0x905 kernel/softirq.c:571
invoke_softirq kernel/softirq.c:445 [inline]
__irq_exit_rcu+0x114/0x190 kernel/softirq.c:650
irq_exit_rcu+0x9/0x20 kernel/softirq.c:662
sysvec_apic_timer_interrupt+0x97/0xc0 arch/x86/kernel/apic/apic.c:1107
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:645
native_safe_halt arch/x86/include/asm/irqflags.h:48 [inline]
arch_safe_halt arch/x86/include/asm/irqflags.h:86 [inline]
acpi_safe_halt+0x40/0x50 drivers/acpi/processor_idle.c:112
acpi_idle_do_entry+0x53/0x70 drivers/acpi/processor_idle.c:573
acpi_idle_enter+0x173/0x290 drivers/acpi/processor_idle.c:711
cpuidle_enter_state+0xd3/0x6f0 drivers/cpuidle/cpuidle.c:267
cpuidle_enter+0x4e/0xa0 drivers/cpuidle/cpuidle.c:388
cpuidle_idle_call kernel/sched/idle.c:215 [inline]
do_idle+0x305/0x3e0 kernel/sched/idle.c:282
cpu_startup_entry+0x18/0x20 kernel/sched/idle.c:379
rest_init+0x16d/0x2b0 init/main.c:736
arch_call_rest_init+0x13/0x30 init/main.c:898
start_kernel+0x35a/0x4d0 init/main.c:1152
secondary_startup_64_no_verify+0xce/0xdb
INITIAL USE at:
lock_acquire kernel/locking/lockdep.c:5669 [inline]
lock_acquire+0x1af/0x520 kernel/locking/lockdep.c:5634
__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:350 [inline]
evdev_pass_values.part.0+0xf6/0x960 drivers/input/evdev.c:261
evdev_pass_values drivers/input/evdev.c:253 [inline]
evdev_events+0x3b4/0x430 drivers/input/evdev.c:306
input_to_handler+0x2a0/0x4c0 drivers/input/input.c:129
input_pass_values.part.0+0x230/0x760 drivers/input/input.c:161
input_pass_values drivers/input/input.c:148 [inline]
input_event_dispose+0x5cf/0x730 drivers/input/input.c:376
input_handle_event+0x120/0xe70 drivers/input/input.c:404
input_inject_event+0x1c7/0x390 drivers/input/input.c:463
evdev_write+0x434/0x760 drivers/input/evdev.c:530
vfs_write+0x2db/0xe10 fs/read_write.c:582
ksys_write+0x1ec/0x250 fs/read_write.c:637
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x39/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x63/0xcd
}
... key at: [<ffffffff920bef20>] __key.3+0x0/0x40
-> (&new->fa_lock){....}-{2:2} {
INITIAL USE at:
lock_acquire kernel/locking/lockdep.c:5669 [inline]
lock_acquire+0x1af/0x520 kernel/locking/lockdep.c:5634
__raw_write_lock_irq include/linux/rwlock_api_smp.h:195 [inline]
_raw_write_lock_irq+0x36/0x50 kernel/locking/spinlock.c:326
fasync_remove_entry+0xba/0x1f0 fs/fcntl.c:874
fasync_helper+0xa2/0xb0 fs/fcntl.c:977
tun_chr_fasync+0x54/0x170 drivers/net/tun.c:3419
__fput+0x8c2/0xa90 fs/file_table.c:318
task_work_run+0x16f/0x270 kernel/task_work.c:179
resume_user_mode_work include/linux/resume_user_mode.h:49 [inline]
exit_to_user_mode_loop kernel/entry/common.c:171 [inline]
exit_to_user_mode_prepare+0x210/0x240 kernel/entry/common.c:204
__syscall_exit_to_user_mode_work kernel/entry/common.c:286 [inline]
syscall_exit_to_user_mode+0x1d/0x50 kernel/entry/common.c:297
do_syscall_64+0x46/0xb0 arch/x86/entry/common.c:86
entry_SYSCALL_64_after_hwframe+0x63/0xcd
INITIAL READ USE at:
lock_acquire kernel/locking/lockdep.c:5669 [inline]
lock_acquire+0x1af/0x520 kernel/locking/lockdep.c:5634
__raw_read_lock_irqsave include/linux/rwlock_api_smp.h:160 [inline]
_raw_read_lock_irqsave+0x74/0x90 kernel/locking/spinlock.c:236
kill_fasync_rcu fs/fcntl.c:997 [inline]
kill_fasync fs/fcntl.c:1018 [inline]
kill_fasync+0x139/0x4f0 fs/fcntl.c:1011
sock_wake_async+0xd6/0x160 net/socket.c:1449
sk_wake_async include/net/sock.h:2518 [inline]
sk_wake_async+0x108/0x2f0 include/net/sock.h:2514
tcp_rcv_state_process+0x2faf/0x4a10 net/ipv4/tcp_input.c:6571
tcp_v6_do_rcv+0x400/0x15c0 net/ipv6/tcp_ipv6.c:1512
sk_backlog_rcv include/net/sock.h:1113 [inline]
__release_sock+0x133/0x3b0 net/core/sock.c:2922
release_sock+0x58/0x1b0 net/core/sock.c:3489
inet_wait_for_connect net/ipv4/af_inet.c:596 [inline]
__inet_stream_connect+0x757/0xed0 net/ipv4/af_inet.c:688
tcp_sendmsg_fastopen+0x3c4/0x710 net/ipv4/tcp.c:1201
tcp_sendmsg_locked+0x1a0b/0x2950 net/ipv4/tcp.c:1249
tcp_sendmsg+0x2f/0x50 net/ipv4/tcp.c:1484
inet6_sendmsg+0x9d/0xe0 net/ipv6/af_inet6.c:651
sock_sendmsg_nosec net/socket.c:724 [inline]
sock_sendmsg+0xde/0x190 net/socket.c:747
__sys_sendto+0x23a/0x340 net/socket.c:2142
__do_sys_sendto net/socket.c:2154 [inline]
__se_sys_sendto net/socket.c:2150 [inline]
__x64_sys_sendto+0xe1/0x1b0 net/socket.c:2150
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x39/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x63/0xcd
}
... key at: [<ffffffff91e17f20>] __key.0+0x0/0x40
... acquired at:
__raw_read_lock_irqsave include/linux/rwlock_api_smp.h:160 [inline]
_raw_read_lock_irqsave+0x74/0x90 kernel/locking/spinlock.c:236
kill_fasync_rcu fs/fcntl.c:997 [inline]
kill_fasync fs/fcntl.c:1018 [inline]
kill_fasync+0x139/0x4f0 fs/fcntl.c:1011
__pass_event drivers/input/evdev.c:240 [inline]
evdev_pass_values.part.0+0x667/0x960 drivers/input/evdev.c:278
evdev_pass_values drivers/input/evdev.c:253 [inline]
evdev_events+0x3b4/0x430 drivers/input/evdev.c:306
input_to_handler+0x2a0/0x4c0 drivers/input/input.c:129
input_pass_values.part.0+0x230/0x760 drivers/input/input.c:161
input_pass_values drivers/input/input.c:148 [inline]
input_event_dispose+0x5cf/0x730 drivers/input/input.c:376
input_handle_event+0x120/0xe70 drivers/input/input.c:404
input_inject_event+0x1c7/0x390 drivers/input/input.c:463
evdev_write+0x434/0x760 drivers/input/evdev.c:530
vfs_write+0x2db/0xe10 fs/read_write.c:582
ksys_write+0x1ec/0x250 fs/read_write.c:637
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x39/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x63/0xcd
-> (&f->f_owner.lock){...-}-{2:2} {
IN-SOFTIRQ-R at:
lock_acquire kernel/locking/lockdep.c:5669 [inline]
lock_acquire+0x1af/0x520 kernel/locking/lockdep.c:5634
__raw_read_lock_irqsave include/linux/rwlock_api_smp.h:160 [inline]
_raw_read_lock_irqsave+0x49/0x90 kernel/locking/spinlock.c:236
send_sigurg+0x22/0xbd0 fs/fcntl.c:818
sk_send_sigurg+0x7a/0x370 net/core/sock.c:3351
tcp_check_urg net/ipv4/tcp_input.c:5626 [inline]
tcp_urg+0x38e/0xb40 net/ipv4/tcp_input.c:5667
tcp_rcv_established+0x817/0x1f80 net/ipv4/tcp_input.c:6014
tcp_v4_do_rcv+0x663/0x9d0 net/ipv4/tcp_ipv4.c:1721
tcp_v4_rcv+0x2eac/0x3280 net/ipv4/tcp_ipv4.c:2143
ip_protocol_deliver_rcu+0x9f/0x480 net/ipv4/ip_input.c:205
ip_local_deliver_finish+0x2ec/0x520 net/ipv4/ip_input.c:233
NF_HOOK include/linux/netfilter.h:302 [inline]
NF_HOOK include/linux/netfilter.h:296 [inline]
ip_local_deliver+0x1ae/0x200 net/ipv4/ip_input.c:254
dst_input include/net/dst.h:454 [inline]
ip_rcv_finish+0x1cf/0x2f0 net/ipv4/ip_input.c:449
NF_HOOK include/linux/netfilter.h:302 [inline]
NF_HOOK include/linux/netfilter.h:296 [inline]
ip_rcv+0xae/0xd0 net/ipv4/ip_input.c:569
__netif_receive_skb_one_core+0x114/0x180 net/core/dev.c:5480
__netif_receive_skb+0x1f/0x1c0 net/core/dev.c:5594
process_backlog+0x239/0x800 net/core/dev.c:5922
__napi_poll+0xb7/0x6f0 net/core/dev.c:6483
napi_poll net/core/dev.c:6550 [inline]
net_rx_action+0x9c2/0xd80 net/core/dev.c:6660
__do_softirq+0x1d4/0x905 kernel/softirq.c:571
run_ksoftirqd kernel/softirq.c:934 [inline]
run_ksoftirqd+0x31/0x60 kernel/softirq.c:926
smpboot_thread_fn+0x659/0x9e0 kernel/smpboot.c:164
kthread+0x2e8/0x3a0 kernel/kthread.c:376
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308
INITIAL USE at:
lock_acquire kernel/locking/lockdep.c:5669 [inline]
lock_acquire+0x1af/0x520 kernel/locking/lockdep.c:5634
__raw_write_lock_irq include/linux/rwlock_api_smp.h:195 [inline]
_raw_write_lock_irq+0x36/0x50 kernel/locking/spinlock.c:326
f_modown+0x2a/0x390 fs/fcntl.c:92
__f_setown fs/fcntl.c:111 [inline]
f_setown_ex fs/fcntl.c:201 [inline]
do_fcntl+0xb39/0x1240 fs/fcntl.c:384
__do_sys_fcntl fs/fcntl.c:455 [inline]
__se_sys_fcntl fs/fcntl.c:440 [inline]
__x64_sys_fcntl+0x163/0x1d0 fs/fcntl.c:440
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x39/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x63/0xcd
INITIAL READ USE at:
lock_acquire kernel/locking/lockdep.c:5669 [inline]
lock_acquire+0x1af/0x520 kernel/locking/lockdep.c:5634
__raw_read_lock_irqsave include/linux/rwlock_api_smp.h:160 [inline]
_raw_read_lock_irqsave+0x74/0x90 kernel/locking/spinlock.c:236
send_sigurg+0x22/0xbd0 fs/fcntl.c:818
sk_send_sigurg+0x7a/0x370 net/core/sock.c:3351
tcp_check_urg net/ipv4/tcp_input.c:5626 [inline]
tcp_urg+0x38e/0xb40 net/ipv4/tcp_input.c:5667
tcp_rcv_established+0x817/0x1f80 net/ipv4/tcp_input.c:6014
tcp_v4_do_rcv+0x663/0x9d0 net/ipv4/tcp_ipv4.c:1721
sk_backlog_rcv include/net/sock.h:1113 [inline]
__release_sock+0x133/0x3b0 net/core/sock.c:2922
release_sock+0x58/0x1b0 net/core/sock.c:3489
sk_stream_wait_memory+0x72f/0xf30 net/core/stream.c:145
tcp_sendmsg_locked+0x944/0x2950 net/ipv4/tcp.c:1446
tcp_sendmsg+0x2f/0x50 net/ipv4/tcp.c:1484
inet_sendmsg+0x9d/0xe0 net/ipv4/af_inet.c:825
sock_sendmsg_nosec net/socket.c:724 [inline]
sock_sendmsg+0xde/0x190 net/socket.c:747
__sys_sendto+0x23a/0x340 net/socket.c:2142
__do_sys_sendto net/socket.c:2154 [inline]
__se_sys_sendto net/socket.c:2150 [inline]
__x64_sys_sendto+0xe1/0x1b0 net/socket.c:2150
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x39/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x63/0xcd
}
... key at: [<ffffffff91e17100>] __key.5+0x0/0x40
... acquired at:
__raw_read_lock_irqsave include/linux/rwlock_api_smp.h:160 [inline]
_raw_read_lock_irqsave+0x74/0x90 kernel/locking/spinlock.c:236
send_sigio+0x28/0x3b0 fs/fcntl.c:779
kill_fasync_rcu fs/fcntl.c:1004 [inline]
kill_fasync fs/fcntl.c:1018 [inline]
kill_fasync+0x1fb/0x4f0 fs/fcntl.c:1011
sock_wake_async+0xd6/0x160 net/socket.c:1449
sk_wake_async include/net/sock.h:2518 [inline]
sk_wake_async+0x108/0x2f0 include/net/sock.h:2514
tcp_rcv_state_process+0x2faf/0x4a10 net/ipv4/tcp_input.c:6571
tcp_v6_do_rcv+0x400/0x15c0 net/ipv6/tcp_ipv6.c:1512
sk_backlog_rcv include/net/sock.h:1113 [inline]
__release_sock+0x133/0x3b0 net/core/sock.c:2922
release_sock+0x58/0x1b0 net/core/sock.c:3489
inet_wait_for_connect net/ipv4/af_inet.c:596 [inline]
__inet_stream_connect+0x757/0xed0 net/ipv4/af_inet.c:688
tcp_sendmsg_fastopen+0x3c4/0x710 net/ipv4/tcp.c:1201
tcp_sendmsg_locked+0x1a0b/0x2950 net/ipv4/tcp.c:1249
tcp_sendmsg+0x2f/0x50 net/ipv4/tcp.c:1484
inet6_sendmsg+0x9d/0xe0 net/ipv6/af_inet6.c:651
sock_sendmsg_nosec net/socket.c:724 [inline]
sock_sendmsg+0xde/0x190 net/socket.c:747
__sys_sendto+0x23a/0x340 net/socket.c:2142
__do_sys_sendto net/socket.c:2154 [inline]
__se_sys_sendto net/socket.c:2150 [inline]
__x64_sys_sendto+0xe1/0x1b0 net/socket.c:2150
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x39/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x63/0xcd
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:5669 [inline]
lock_acquire+0x1af/0x520 kernel/locking/lockdep.c:5634
__raw_read_lock include/linux/rwlock_api_smp.h:150 [inline]
_raw_read_lock+0x5f/0x70 kernel/locking/spinlock.c:228
do_wait+0x283/0xc30 kernel/exit.c:1602
kernel_wait+0xa0/0x150 kernel/exit.c:1792
call_usermodehelper_exec_sync kernel/umh.c:137 [inline]
call_usermodehelper_exec_work+0xf9/0x180 kernel/umh.c:164
process_one_work+0x991/0x15c0 kernel/workqueue.c:2390
worker_thread+0x669/0x1090 kernel/workqueue.c:2537
kthread+0x2e8/0x3a0 kernel/kthread.c:376
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308
SOFTIRQ-ON-R at:
lock_acquire kernel/locking/lockdep.c:5669 [inline]
lock_acquire+0x1af/0x520 kernel/locking/lockdep.c:5634
__raw_read_lock include/linux/rwlock_api_smp.h:150 [inline]
_raw_read_lock+0x5f/0x70 kernel/locking/spinlock.c:228
do_wait+0x283/0xc30 kernel/exit.c:1602
kernel_wait+0xa0/0x150 kernel/exit.c:1792
call_usermodehelper_exec_sync kernel/umh.c:137 [inline]
call_usermodehelper_exec_work+0xf9/0x180 kernel/umh.c:164
process_one_work+0x991/0x15c0 kernel/workqueue.c:2390
worker_thread+0x669/0x1090 kernel/workqueue.c:2537
kthread+0x2e8/0x3a0 kernel/kthread.c:376
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308
INITIAL USE at:
lock_acquire kernel/locking/lockdep.c:5669 [inline]
lock_acquire+0x1af/0x520 kernel/locking/lockdep.c:5634
__raw_write_lock_irq include/linux/rwlock_api_smp.h:195 [inline]
_raw_write_lock_irq+0x36/0x50 kernel/locking/spinlock.c:326
copy_process+0x47e5/0x7590 kernel/fork.c:2401
kernel_clone+0xeb/0x890 kernel/fork.c:2682
user_mode_thread+0xb1/0xf0 kernel/fork.c:2758
rest_init+0x27/0x2b0 init/main.c:701
arch_call_rest_init+0x13/0x30 init/main.c:898
start_kernel+0x35a/0x4d0 init/main.c:1152
secondary_startup_64_no_verify+0xce/0xdb
INITIAL READ USE at:
lock_acquire kernel/locking/lockdep.c:5669 [inline]
lock_acquire+0x1af/0x520 kernel/locking/lockdep.c:5634
__raw_read_lock include/linux/rwlock_api_smp.h:150 [inline]
_raw_read_lock+0x5f/0x70 kernel/locking/spinlock.c:228
do_wait+0x283/0xc30 kernel/exit.c:1602
kernel_wait+0xa0/0x150 kernel/exit.c:1792
call_usermodehelper_exec_sync kernel/umh.c:137 [inline]
call_usermodehelper_exec_work+0xf9/0x180 kernel/umh.c:164
process_one_work+0x991/0x15c0 kernel/workqueue.c:2390
worker_thread+0x669/0x1090 kernel/workqueue.c:2537
kthread+0x2e8/0x3a0 kernel/kthread.c:376
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308
}
... key at: [<ffffffff8c40a098>] tasklist_lock+0x18/0x40
... acquired at:
lock_acquire kernel/locking/lockdep.c:5669 [inline]
lock_acquire+0x1af/0x520 kernel/locking/lockdep.c:5634
__raw_read_lock include/linux/rwlock_api_smp.h:150 [inline]
_raw_read_lock+0x5f/0x70 kernel/locking/spinlock.c:228
send_sigio+0xaf/0x3b0 fs/fcntl.c:793
kill_fasync_rcu fs/fcntl.c:1004 [inline]
kill_fasync fs/fcntl.c:1018 [inline]
kill_fasync+0x1fb/0x4f0 fs/fcntl.c:1011
lease_break_callback+0x23/0x30 fs/locks.c:522
__break_lease+0x3db/0x12d0 fs/locks.c:1522
break_lease include/linux/filelock.h:360 [inline]
break_lease include/linux/filelock.h:350 [inline]
do_dentry_open+0x65e/0x13f0 fs/open.c:911
do_open fs/namei.c:3560 [inline]
path_openat+0x1baa/0x2750 fs/namei.c:3715
do_filp_open+0x1ba/0x410 fs/namei.c:3742
do_sys_openat2+0x16d/0x4c0 fs/open.c:1348
do_sys_open fs/open.c:1364 [inline]
__do_sys_open fs/open.c:1372 [inline]
__se_sys_open fs/open.c:1368 [inline]
__x64_sys_open+0x11d/0x1c0 fs/open.c:1368
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x39/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x63/0xcd
stack backtrace:
CPU: 0 PID: 27899 Comm: syz-executor.5 Not tainted 6.3.0-rc7-syzkaller-00060-g789b4a41c247 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/30/2023
Call Trace:
<TASK>
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0xd9/0x150 lib/dump_stack.c:106
print_bad_irq_dependency kernel/locking/lockdep.c:2612 [inline]
check_irq_usage+0x114e/0x1a40 kernel/locking/lockdep.c:2851
check_prev_add kernel/locking/lockdep.c:3102 [inline]
check_prevs_add kernel/locking/lockdep.c:3217 [inline]
validate_chain kernel/locking/lockdep.c:3832 [inline]
__lock_acquire+0x2edf/0x5d40 kernel/locking/lockdep.c:5056
lock_acquire kernel/locking/lockdep.c:5669 [inline]
lock_acquire+0x1af/0x520 kernel/locking/lockdep.c:5634
__raw_read_lock include/linux/rwlock_api_smp.h:150 [inline]
_raw_read_lock+0x5f/0x70 kernel/locking/spinlock.c:228
send_sigio+0xaf/0x3b0 fs/fcntl.c:793
kill_fasync_rcu fs/fcntl.c:1004 [inline]
kill_fasync fs/fcntl.c:1018 [inline]
kill_fasync+0x1fb/0x4f0 fs/fcntl.c:1011
lease_break_callback+0x23/0x30 fs/locks.c:522
__break_lease+0x3db/0x12d0 fs/locks.c:1522
break_lease include/linux/filelock.h:360 [inline]
break_lease include/linux/filelock.h:350 [inline]
do_dentry_open+0x65e/0x13f0 fs/open.c:911
do_open fs/namei.c:3560 [inline]
path_openat+0x1baa/0x2750 fs/namei.c:3715
do_filp_open+0x1ba/0x410 fs/namei.c:3742
do_sys_openat2+0x16d/0x4c0 fs/open.c:1348
do_sys_open fs/open.c:1364 [inline]
__do_sys_open fs/open.c:1372 [inline]
__se_sys_open fs/open.c:1368 [inline]
__x64_sys_open+0x11d/0x1c0 fs/open.c:1368
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x39/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7fe01088c169
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 f1 19 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 b8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fe0115c8168 EFLAGS: 00000246 ORIG_RAX: 0000000000000002
RAX: ffffffffffffffda RBX: 00007fe0109abf80 RCX: 00007fe01088c169
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000020000200
RBP: 00007fe0108e7ca1 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fe010acfb1f R14: 00007fe0115c8300 R15: 0000000000022000
</TASK>
---
This report is generated by a bot. It may contain errors.
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