INFO: task syz-executor.0:6352 blocked for more than 147 seconds.
Not tainted 6.10.0-rc3-next-20240611-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.0 state:D stack:24672 pid:6352 tgid:6352 ppid:5114 flags:0x00004006
Call Trace:
context_switch kernel/sched/core.c:5192 [inline]
__schedule+0x17e8/0x4a20 kernel/sched/core.c:6529
__schedule_loop kernel/sched/core.c:6606 [inline]
schedule+0x14b/0x320 kernel/sched/core.c:6621
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6678
__mutex_lock_common kernel/locking/mutex.c:684 [inline]
__mutex_lock+0x6a4/0xd70 kernel/locking/mutex.c:752
raw_release+0x1b8/0x8a0 net/can/raw.c:415
__sock_release net/socket.c:659 [inline]
sock_close+0xbc/0x240 net/socket.c:1421
__fput+0x406/0x8b0 fs/file_table.c:422
task_work_run+0x24f/0x310 kernel/task_work.c:180
resume_user_mode_work include/linux/resume_user_mode.h:50 [inline]
exit_to_user_mode_loop kernel/entry/common.c:114 [inline]
exit_to_user_mode_prepare include/linux/entry-common.h:328 [inline]
__syscall_exit_to_user_mode_work kernel/entry/common.c:207 [inline]
syscall_exit_to_user_mode+0x168/0x370 kernel/entry/common.c:218
do_syscall_64+0x100/0x230 arch/x86/entry/common.c:89
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f75c727cea9
RSP: 002b:00007fffd54703c8 EFLAGS: 00000246
ORIG_RAX: 00000000000001b4
RAX: 0000000000000000 RBX: 00007f75c73b5980 RCX: 00007f75c727cea9
RDX: 0000000000000000 RSI: 000000000000001e RDI: 0000000000000003
RBP: 00007f75c73b5980 R08: 00000000819a92e9 R09: 0000001d00000000
R10: 0000000080000000 R11: 0000000000000246 R12: 0000000000021993
R13: 00007f75c73b412c R14: 0000000000000032 R15: 00007f75c73b5980
INFO: task syz-executor.3:6378 blocked for more than 147 seconds.
Not tainted 6.10.0-rc3-next-20240611-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.3 state:D
stack:26464 pid:6378 tgid:6377 ppid:5122 flags:0x00000006
Call Trace:
context_switch kernel/sched/core.c:5192 [inline]
__schedule+0x17e8/0x4a20 kernel/sched/core.c:6529
__schedule_loop kernel/sched/core.c:6606 [inline]
schedule+0x14b/0x320 kernel/sched/core.c:6621
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6678
__mutex_lock_common kernel/locking/mutex.c:684 [inline]
__mutex_lock+0x6a4/0xd70 kernel/locking/mutex.c:752
rtnl_lock net/core/rtnetlink.c:148 [inline]
rtnl_dumpit+0x1bd/0x300 net/core/rtnetlink.c:6586
netlink_dump+0x645/0xd80 net/netlink/af_netlink.c:2325
__netlink_dump_start+0x59d/0x780 net/netlink/af_netlink.c:2440
netlink_dump_start include/linux/netlink.h:339 [inline]
rtnetlink_dump_start net/core/rtnetlink.c:6616 [inline]
rtnetlink_rcv_msg+0xd9c/0x1170 net/core/rtnetlink.c:6683
netlink_rcv_skb+0x1e3/0x430 net/netlink/af_netlink.c:2550
netlink_unicast_kernel net/netlink/af_netlink.c:1331 [inline]
netlink_unicast+0x7ea/0x980 net/netlink/af_netlink.c:1357
netlink_sendmsg+0x8db/0xcb0 net/netlink/af_netlink.c:1901
sock_sendmsg_nosec net/socket.c:730 [inline]
__sock_sendmsg+0x221/0x270 net/socket.c:745
__sys_sendto+0x3a4/0x4f0 net/socket.c:2192
__do_sys_sendto net/socket.c:2204 [inline]
__se_sys_sendto net/socket.c:2200 [inline]
__x64_sys_sendto+0xde/0x100 net/socket.c:2200
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f593ec7cea9
RSP: 002b:00007f593fa470c8 EFLAGS: 00000246
ORIG_RAX: 000000000000002c
RAX: ffffffffffffffda RBX: 00007f593edb3f80 RCX: 00007f593ec7cea9
RDX: 0000000000000012 RSI: 0000000020000740 RDI: 0000000000000003
RBP: 00007f593ecebff4 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000000b R14: 00007f593edb3f80 R15: 00007ffc37e0af38
Showing all locks held in the system:
1 lock held by khungtaskd/30:
#0: ffffffff8e3354a0
(
rcu_read_lock){....}-{1:2}
, at: rcu_lock_acquire include/linux/rcupdate.h:326 [inline]
, at: rcu_read_lock include/linux/rcupdate.h:838 [inline]
, at: debug_show_all_locks+0x55/0x2a0 kernel/locking/lockdep.c:6689
3 locks held by kworker/1:2/1168:
#0: ffff888015081948 ((wq_completion)events_power_efficient){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3223 [inline]
#0: ffff888015081948 ((wq_completion)events_power_efficient){+.+.}-{0:0}, at: process_scheduled_works+0x90a/0x1830 kernel/workqueue.c:3329
#1: ffffc90004907d00 ((reg_check_chans).work){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3224 [inline]
#1: ffffc90004907d00 ((reg_check_chans).work){+.+.}-{0:0}, at: process_scheduled_works+0x945/0x1830 kernel/workqueue.c:3329
#2: ffffffff8f5ef4c8 (rtnl_mutex){+.+.}-{3:3}, at: reg_check_chans_work+0x91/0xea0 net/wireless/reg.c:2478
2 locks held by getty/4846:
#0: ffff88802af6d0a0
(
&tty->ldisc_sem
){++++}-{0:0}
, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:243
#1: ffffc90002f162f0
(
&ldata->atomic_read_lock){+.+.}-{3:3}
, at: n_tty_read+0x6b5/0x1e10 drivers/tty/n_tty.c:2211
3 locks held by kworker/u8:10/5912:
#0:
ffff88802a4fc148
((wq_completion)ipv6_addrconf
){+.+.}-{0:0}
, at: process_one_work kernel/workqueue.c:3223 [inline]
, at: process_scheduled_works+0x90a/0x1830 kernel/workqueue.c:3329
#1:
ffffc90014d0fd00
((work_completion)(&(&net->ipv6.addr_chk_work)->work)
){+.+.}-{0:0}
, at: process_one_work kernel/workqueue.c:3224 [inline]
, at: process_scheduled_works+0x945/0x1830 kernel/workqueue.c:3329
#2:
ffffffff8f5ef4c8 (rtnl_mutex){+.+.}-{3:3}, at: addrconf_verify_work+0x19/0x30 net/ipv6/addrconf.c:4733
2 locks held by syz-executor.0/6352:
#0: ffff88807ca6ac08 (&sb->s_type->i_mutex_key
#10){+.+.}-{3:3}
, at: inode_lock include/linux/fs.h:795 [inline]
, at: __sock_release net/socket.c:658 [inline]
, at: sock_close+0x90/0x240 net/socket.c:1421
#1: ffffffff8f5ef4c8 (rtnl_mutex){+.+.}-{3:3}, at: raw_release+0x1b8/0x8a0 net/can/raw.c:415
2 locks held by syz-executor.2/6358:
2 locks held by syz-executor.3/6378:
#0: ffff888011a58678 (
nlk_cb_mutex-ROUTE
){+.+.}-{3:3}
, at: __netlink_dump_start+0x119/0x780 net/netlink/af_netlink.c:2404
#1:
ffffffff8f5ef4c8
(
rtnl_mutex
){+.+.}-{3:3}
, at: rtnl_lock net/core/rtnetlink.c:148 [inline]
, at: rtnl_dumpit+0x1bd/0x300 net/core/rtnetlink.c:6586
2 locks held by syz-executor.1/6409:
#0: ffff88805b5b6208
(
&sb->s_type->i_mutex_key#10
){+.+.}-{3:3}
, at: inode_lock include/linux/fs.h:795 [inline]
, at: __sock_release net/socket.c:658 [inline]
, at: sock_close+0x90/0x240 net/socket.c:1421
#1:
ffffffff8f5ef4c8
(rtnl_mutex
){+.+.}-{3:3}, at: raw_release+0x1b8/0x8a0 net/can/raw.c:415
1 lock held by syz-executor.4/6420:
#0:
ffffffff8f5ef4c8
(rtnl_mutex
){+.+.}-{3:3}
, at: rtnetlink_rcv_msg+0x839/0x1170 net/core/rtnetlink.c:6724
1 lock held by syz-executor.2/6425:
#0: ffffffff8f5ef4c8
(
rtnl_mutex){+.+.}-{3:3}
, at: rtnetlink_rcv_msg+0x839/0x1170 net/core/rtnetlink.c:6724
1 lock held by syz-executor.0/6429:
#0:
ffffffff8f5ef4c8
(rtnl_mutex
){+.+.}-{3:3}
, at: rtnetlink_rcv_msg+0x839/0x1170 net/core/rtnetlink.c:6724
1 lock held by syz-executor.3/6431:
#0: ffffffff8f5ef4c8
(
rtnl_mutex
){+.+.}-{3:3}
, at: rtnetlink_rcv_msg+0x839/0x1170 net/core/rtnetlink.c:6724
1 lock held by syz-executor.1/6437:
#0:
ffffffff8f5ef4c8
(rtnl_mutex
){+.+.}-{3:3}
, at: rtnetlink_rcv_msg+0x839/0x1170 net/core/rtnetlink.c:6724
1 lock held by syz-executor.4/6439:
#0:
ffffffff8f5ef4c8
(
rtnl_mutex){+.+.}-{3:3}
, at: rtnetlink_rcv_msg+0x839/0x1170 net/core/rtnetlink.c:6724
1 lock held by syz-executor.2/6455:
#0:
ffffffff8f5ef4c8
(rtnl_mutex
){+.+.}-{3:3}
, at: rtnetlink_rcv_msg+0x839/0x1170 net/core/rtnetlink.c:6724
1 lock held by syz-executor.0/6460:
#0:
ffffffff8f5ef4c8
(
rtnl_mutex){+.+.}-{3:3}
, at: rtnetlink_rcv_msg+0x839/0x1170 net/core/rtnetlink.c:6724
1 lock held by syz-executor.3/6462:
#0:
ffffffff8f5ef4c8
(rtnl_mutex
){+.+.}-{3:3}
, at: rtnetlink_rcv_msg+0x839/0x1170 net/core/rtnetlink.c:6724
1 lock held by syz-executor.4/6465:
#0:
ffffffff8f5ef4c8
(
rtnl_mutex
){+.+.}-{3:3}
, at: rtnetlink_rcv_msg+0x839/0x1170 net/core/rtnetlink.c:6724
1 lock held by syz-executor.1/6471:
#0:
ffffffff8f5ef4c8
(
rtnl_mutex){+.+.}-{3:3}
, at: rtnetlink_rcv_msg+0x839/0x1170 net/core/rtnetlink.c:6724
=============================================
NMI backtrace for cpu 1
CPU: 1 PID: 30 Comm: khungtaskd Not tainted 6.10.0-rc3-next-20240611-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/07/2024
Call Trace:
__dump_stack lib/dump_stack.c:91 [inline]
dump_stack_lvl+0x241/0x360 lib/dump_stack.c:117
nmi_cpu_backtrace+0x49c/0x4d0 lib/nmi_backtrace.c:113
nmi_trigger_cpumask_backtrace+0x198/0x320 lib/nmi_backtrace.c:62
trigger_all_cpu_backtrace include/linux/nmi.h:162 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:223 [inline]
watchdog+0xfde/0x1020 kernel/hung_task.c:379
kthread+0x2f0/0x390 kernel/kthread.c:389
ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:144
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
Sending NMI from CPU 1 to CPUs 0:
Call Trace:
context_switch kernel/sched/core.c:5192 [inline]
__schedule+0x17e8/0x4a20 kernel/sched/core.c:6529
__schedule_loop kernel/sched/core.c:6606 [inline]
schedule+0x14b/0x320 kernel/sched/core.c:6621
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6678
__mutex_lock_common kernel/locking/mutex.c:684 [inline]
__mutex_lock+0x6a4/0xd70 kernel/locking/mutex.c:752
rtnetlink_rcv_msg+0x839/0x1170 net/core/rtnetlink.c:6724
NMI backtrace for cpu 0
CPU: 0 PID: 0 Comm: swapper/0 Not tainted 6.10.0-rc3-next-20240611-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/07/2024
RIP: 0010:memset_orig+0x8d/0xb0 arch/x86/lib/memset_64.S:105
Code: e1 38 74 14 c1 e9 03 66 0f 1f 44 00 00 ff c9 48 89 07 48 8d 7f 08 75 f5 83 e2 07 74 0a ff ca 88 07 48 8d 7f 01 75 f6 4c 89 d0 cc cc cc cc 48 83 fa 07 76 e3 48 89 07 49 c7 c0 08 00 00 00 4d
RSP: 0018:ffffc90000007098 EFLAGS: 00000246
RAX: ffffc90000007100 RBX: 1ffff92000000e1c RCX: 0000000000000000
RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffc90000007118
RBP: ffffc90000007190 R08: ffffc90000007117 R09: 0000000000000000
R10: ffffc90000007100 R11: fffff52000000e23 R12: ffffc900000072e0
R13: dffffc0000000000 R14: ffffffff8bcb86a0 R15: ffffc90000007100
FS: 0000000000000000(0000) GS:ffff8880b9400000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000563232ba8040 CR3: 000000000e132000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
sprintf+0xa5/0x120 lib/vsprintf.c:3024
print_time kernel/printk/printk.c:1351 [inline]
info_print_prefix+0x16b/0x310 kernel/printk/printk.c:1377
record_print_text kernel/printk/printk.c:1426 [inline]
printk_get_next_message+0x6da/0xbe0 kernel/printk/printk.c:2902
console_emit_next_record kernel/printk/printk.c:2942 [inline]
console_flush_all+0x45b/0xf50 kernel/printk/printk.c:3047
console_unlock+0x13b/0x4d0 kernel/printk/printk.c:3118
vprintk_emit+0x7a1/0x900 kernel/printk/printk.c:2420
_printk+0xd5/0x120 kernel/printk/printk.c:2447
printk_stack_address arch/x86/kernel/dumpstack.c:72 [inline]
show_trace_log_lvl+0x43a/0x520 arch/x86/kernel/dumpstack.c:285
sched_show_task+0x578/0x740 kernel/sched/core.c:7432
report_rtnl_holders+0x1ba/0x2d0 net/core/rtnetlink.c:104
call_timer_fn+0x18e/0x650 kernel/time/timer.c:1792
expire_timers kernel/time/timer.c:1843 [inline]
__run_timers kernel/time/timer.c:2417 [inline]
__run_timer_base+0x66a/0x8e0 kernel/time/timer.c:2428
run_timer_base kernel/time/timer.c:2437 [inline]
run_timer_softirq+0xb7/0x170 kernel/time/timer.c:2447
handle_softirqs+0x2c4/0x970 kernel/softirq.c:554
__do_softirq kernel/softirq.c:588 [inline]
invoke_softirq kernel/softirq.c:428 [inline]
__irq_exit_rcu+0xf4/0x1c0 kernel/softirq.c:637
irq_exit_rcu+0x9/0x30 kernel/softirq.c:649
instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1043 [inline]
sysvec_apic_timer_interrupt+0xa6/0xc0 arch/x86/kernel/apic/apic.c:1043
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:native_irq_disable arch/x86/include/asm/irqflags.h:37 [inline]
RIP: 0010:arch_local_irq_disable arch/x86/include/asm/irqflags.h:72 [inline]
RIP: 0010:acpi_safe_halt+0x21/0x30 drivers/acpi/processor_idle.c:113
Code: 90 90 90 90 90 90 90 90 90 65 48 8b 04 25 00 d6 03 00 48 f7 00 08 00 00 00 75 10 66 90 0f 00 2d 85 c1 9e 00 f3 0f 1e fa fb f4 c3 cc cc cc cc 66 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90 90
RSP: 0018:ffffffff8e007ca8 EFLAGS: 00000246
RAX: ffffffff8e094680 RBX: ffff88801bee0864 RCX: 000000000009e2b9
RDX: 0000000000000001 RSI: ffff88801bee0800 RDI: ffff88801bee0864
RBP: 000000000003a6b8 R08: ffff8880b9437d0b R09: 1ffff11017286fa1
R10: dffffc0000000000 R11: ffffffff8b8adbb0 R12: ffff888017fe7800
R13: 0000000000000000 R14: 0000000000000001 R15: ffffffff8ead2820
acpi_idle_enter+0xe4/0x140 drivers/acpi/processor_idle.c:707
cpuidle_enter_state+0x112/0x480 drivers/cpuidle/cpuidle.c:267
cpuidle_enter+0x5d/0xa0 drivers/cpuidle/cpuidle.c:388
call_cpuidle kernel/sched/idle.c:155 [inline]
cpuidle_idle_call kernel/sched/idle.c:230 [inline]
do_idle+0x375/0x5d0 kernel/sched/idle.c:326
cpu_startup_entry+0x42/0x60 kernel/sched/idle.c:424
rest_init+0x2dc/0x300 init/main.c:747
start_kernel+0x47a/0x500 init/main.c:1103
x86_64_start_reservations+0x2a/0x30 arch/x86/kernel/head64.c:507
x86_64_start_kernel+0x9f/0xa0 arch/x86/kernel/head64.c:488
common_startup_64+0x13e/0x147