INFO: task syz.0.377:6886 blocked for more than 149 seconds.
Not tainted 6.12.0-rc2-syzkaller-00501-gd677aebd663d #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.0.377 state:D stack:23512 pid:6886 tgid:6885 ppid:5230 flags:0x00004000
Call Trace:
context_switch kernel/sched/core.c:5322 [inline]
__schedule+0x1895/0x4b30 kernel/sched/core.c:6682
__schedule_loop kernel/sched/core.c:6759 [inline]
schedule+0x14b/0x320 kernel/sched/core.c:6774
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6831
rwsem_down_write_slowpath+0xeee/0x13b0 kernel/locking/rwsem.c:1176
__down_write_common kernel/locking/rwsem.c:1304 [inline]
__down_write kernel/locking/rwsem.c:1313 [inline]
down_write+0x1d7/0x220 kernel/locking/rwsem.c:1578
mmap_write_lock include/linux/mmap_lock.h:106 [inline]
exit_mmap+0x2bd/0xc40 mm/mmap.c:1872
__mmput+0x115/0x390 kernel/fork.c:1347
exit_mm+0x220/0x310 kernel/exit.c:571
do_exit+0x9b2/0x28e0 kernel/exit.c:926
do_group_exit+0x207/0x2c0 kernel/exit.c:1088
get_signal+0x16a3/0x1740 kernel/signal.c:2917
arch_do_signal_or_restart+0x96/0x860 arch/x86/kernel/signal.c:337
exit_to_user_mode_loop kernel/entry/common.c:111 [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+0xc9/0x370 kernel/entry/common.c:218
do_syscall_64+0x100/0x230 arch/x86/entry/common.c:89
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fe453d7dff9
RSP: 002b:00007fe454bd60e8 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: 0000000000000001 RBX: 00007fe453f35f88 RCX: 00007fe453d7dff9
RDX: 00000000000f4240 RSI: 0000000000000081 RDI: 00007fe453f35f8c
RBP: 00007fe453f35f80 R08: 7fffffffffffffff R09: 0000000000000000
R10: ffffffffffffffff R11: 0000000000000246 R12: 00007fe453f35f8c
R13: 0000000000000000 R14: 00007ffc3cc3b910 R15: 00007ffc3cc3b9f8
Showing all locks held in the system:
1 lock held by khungtaskd/30:
#0: ffffffff8e937de0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:337 [inline]
#0: ffffffff8e937de0 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:849 [inline]
#0: ffffffff8e937de0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x55/0x2a0 kernel/locking/lockdep.c:6720
4 locks held by kworker/1:2/939:
#0: ffff8880b873ea98 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x2a/0x140 kernel/sched/core.c:593
#1: ffff8880b8728948 (&per_cpu_ptr(group->pcpu, cpu)->seq){-.-.}-{0:0}, at: psi_task_switch+0x41d/0x7a0 kernel/sched/psi.c:987
#2: ffffffff8e937e40 (rcu_read_lock_bh){....}-{1:2}, at: local_bh_disable include/linux/bottom_half.h:20 [inline]
#2: ffffffff8e937e40 (rcu_read_lock_bh){....}-{1:2}, at: rcu_read_lock_bh include/linux/rcupdate.h:901 [inline]
#2: ffffffff8e937e40 (rcu_read_lock_bh){....}-{1:2}, at: keep_key_fresh drivers/net/wireguard/send.c:129 [inline]
#2: ffffffff8e937e40 (rcu_read_lock_bh){....}-{1:2}, at: wg_packet_create_data_done drivers/net/wireguard/send.c:259 [inline]
#2: ffffffff8e937e40 (rcu_read_lock_bh){....}-{1:2}, at: wg_packet_tx_worker+0x25f/0x810 drivers/net/wireguard/send.c:276
#3: ffffffff8e937de0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:337 [inline]
#3: ffffffff8e937de0 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:849 [inline]
#3: ffffffff8e937de0 (rcu_read_lock){....}-{1:2}, at: ip6_input_finish+0xdc/0x2d0 net/ipv6/ip6_input.c:480
4 locks held by kworker/u8:6/1121:
#0: ffff88801baed948 ((wq_completion)netns){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3204 [inline]
#0: ffff88801baed948 ((wq_completion)netns){+.+.}-{0:0}, at: process_scheduled_works+0x93b/0x1850 kernel/workqueue.c:3310
#1: ffffc90003f87d00 (net_cleanup_work){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3205 [inline]
#1: ffffc90003f87d00 (net_cleanup_work){+.+.}-{0:0}, at: process_scheduled_works+0x976/0x1850 kernel/workqueue.c:3310
#2: ffffffff8fcc61d0 (pernet_ops_rwsem){++++}-{3:3}, at: cleanup_net+0x16a/0xcc0 net/core/net_namespace.c:587
#3: ffffffff8fcd2d48 (rtnl_mutex){+.+.}-{3:3}, at: default_device_exit_batch+0xe9/0xaa0 net/core/dev.c:11942
1 lock held by syslogd/4670:
#0: ffff8880b863ea98 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x2a/0x140 kernel/sched/core.c:593
2 locks held by dhcpcd/4901:
#0: ffffffff8fcb77c8 (vlan_ioctl_mutex){+.+.}-{3:3}, at: sock_ioctl+0x661/0x8e0 net/socket.c:1308
#1: ffffffff8fcd2d48 (rtnl_mutex){+.+.}-{3:3}, at: vlan_ioctl_handler+0x112/0x9d0 net/8021q/vlan.c:553
2 locks held by getty/4993:
#0: ffff88814bdab0a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:243
#1: ffffc90002f062f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6a6/0x1e00 drivers/tty/n_tty.c:2211
1 lock held by syz-executor/5230:
#0: ffff888011973118 (&mm->mmap_lock){++++}-{3:3}, at: mmap_write_lock include/linux/mmap_lock.h:106 [inline]
#0: ffff888011973118 (&mm->mmap_lock){++++}-{3:3}, at: exit_mmap+0x2bd/0xc40 mm/mmap.c:1872
1 lock held by syz.0.377/6886:
#0: ffff888022beb118 (&mm->mmap_lock){++++}-{3:3}, at: mmap_write_lock include/linux/mmap_lock.h:106 [inline]
#0: ffff888022beb118 (&mm->mmap_lock){++++}-{3:3}, at: exit_mmap+0x2bd/0xc40 mm/mmap.c:1872
1 lock held by syz-executor/7901:
#0: ffffffff8e93d378 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:329 [inline]
#0: ffffffff8e93d378 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x451/0x830 kernel/rcu/tree_exp.h:976
1 lock held by syz-executor/8686:
#0: ffffffff8fcd2d48 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:79 [inline]
#0: ffffffff8fcd2d48 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x6e6/0xcf0 net/core/rtnetlink.c:6746
1 lock held by syz.3.715/8849:
#0: ffffffff8fcd2d48 (rtnl_mutex){+.+.}-{3:3}, at: tun_detach drivers/net/tun.c:698 [inline]
#0: ffffffff8fcd2d48 (rtnl_mutex){+.+.}-{3:3}, at: tun_chr_close+0x3b/0x1b0 drivers/net/tun.c:3517
3 locks held by syz.0.718/8864:
#0: ffffffff8fd38ab0 (cb_lock){++++}-{3:3}, at: genl_rcv+0x19/0x40 net/netlink/genetlink.c:1218
#1: ffffffff8fd38968 (genl_mutex){+.+.}-{3:3}, at: genl_lock net/netlink/genetlink.c:35 [inline]
#1: ffffffff8fd38968 (genl_mutex){+.+.}-{3:3}, at: genl_op_lock net/netlink/genetlink.c:60 [inline]
#1: ffffffff8fd38968 (genl_mutex){+.+.}-{3:3}, at: genl_rcv_msg+0x121/0xec0 net/netlink/genetlink.c:1209
#2: ffffffff8fcd2d48 (rtnl_mutex){+.+.}-{3:3}, at: nl802154_pre_doit+0xb5/0xac0 net/ieee802154/nl802154.c:2705
2 locks held by syz.2.719/8870:
#0: ffffffff8fd38ab0 (cb_lock){++++}-{3:3}, at: genl_rcv+0x19/0x40 net/netlink/genetlink.c:1218
#1: ffffffff8fd38968 (genl_mutex){+.+.}-{3:3}, at: genl_lock net/netlink/genetlink.c:35 [inline]
#1: ffffffff8fd38968 (genl_mutex){+.+.}-{3:3}, at: genl_op_lock net/netlink/genetlink.c:60 [inline]
#1: ffffffff8fd38968 (genl_mutex){+.+.}-{3:3}, at: genl_rcv_msg+0x121/0xec0 net/netlink/genetlink.c:1209
=============================================
NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 30 Comm: khungtaskd Not tainted 6.12.0-rc2-syzkaller-00501-gd677aebd663d #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
Call Trace:
__dump_stack lib/dump_stack.c:94 [inline]
dump_stack_lvl+0x241/0x360 lib/dump_stack.c:120
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+0xff4/0x1040 kernel/hung_task.c:379
kthread+0x2f0/0x390 kernel/kthread.c:389
ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 7910 Comm: syz-executor Not tainted 6.12.0-rc2-syzkaller-00501-gd677aebd663d #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
RIP: 0010:pie_vars_init include/net/pie.h:106 [inline]
RIP: 0010:pie_calculate_probability+0x6cf/0x820 net/sched/sch_pie.c:414
Code: 40 18 ff ff ff ff 48 8d 78 28 48 89 f8 48 c1 e8 03 42 80 3c 30 00 74 05 e8 4e fc 34 f8 48 8b 44 24 18 48 c7 40 28 00 00 00 00 <48> 8d 78 30 48 89 f8 48 c1 e8 03 42 80 3c 30 00 74 05 e8 2a fc 34
RSP: 0018:ffffc90000a18aa0 EFLAGS: 00000246
RAX: ffff888058692050 RBX: 1ffff110062df863 RCX: ffff8880283fbc00
RDX: 0000000000000100 RSI: 0000000000000000 RDI: ffff888058692078
RBP: ffff8880316fc31a R08: ffffffff89c99bca R09: fffff52000143158
R10: dffffc0000000000 R11: fffff52000143158 R12: ffff888058692058
R13: 0000000000000000 R14: dffffc0000000000 R15: 0000000000000000
FS: 0000000000000000(0000) GS:ffff8880b8700000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000556ceb9ed058 CR3: 000000007d3b2000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
fq_pie_timer+0x26d/0x590 net/sched/sch_fq_pie.c:398
call_timer_fn+0x18e/0x650 kernel/time/timer.c:1794
expire_timers kernel/time/timer.c:1845 [inline]
__run_timers kernel/time/timer.c:2419 [inline]
__run_timer_base+0x66a/0x8e0 kernel/time/timer.c:2430
run_timer_base kernel/time/timer.c:2439 [inline]
run_timer_softirq+0xb7/0x170 kernel/time/timer.c:2449
handle_softirqs+0x2c5/0x980 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:1037 [inline]
sysvec_apic_timer_interrupt+0xa6/0xc0 arch/x86/kernel/apic/apic.c:1037
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:unwind_get_return_address+0x56/0x90 arch/x86/kernel/unwind_orc.c:369
Code: 83 c3 48 49 89 df 49 c1 ef 03 43 80 3c 37 00 74 08 48 89 df e8 ab 32 bd 00 48 8b 3b e8 83 6b 1e 00 85 c0 74 14 43 80 3c 37 00 <74> 08 48 89 df e8 90 32 bd 00 48 8b 03 eb 02 31 c0 5b 41 5e 41 5f
RSP: 0018:ffffc90016fa77a0 EFLAGS: 00000246
RAX: 0000000000000001 RBX: ffffc90016fa7808 RCX: ffffffff917bd000
RDX: ffffffff9196a501 RSI: 0000000000000000 RDI: ffffffff82115eff
RBP: ffffc90016fa7850 R08: ffffc90016fa781f R09: 0000000000000000
R10: ffffc90016fa7810 R11: fffff52002df4f04 R12: ffff8880283fbc00
R13: ffffffff8180a0e0 R14: dffffc0000000000 R15: 1ffff92002df4f01
arch_stack_walk+0xfd/0x150 arch/x86/kernel/stacktrace.c:26
stack_trace_save+0x118/0x1d0 kernel/stacktrace.c:122
save_stack+0xfb/0x1f0 mm/page_owner.c:156
__reset_page_owner+0x76/0x430 mm/page_owner.c:297
reset_page_owner include/linux/page_owner.h:25 [inline]
free_pages_prepare mm/page_alloc.c:1108 [inline]
free_unref_page+0xcfb/0xf20 mm/page_alloc.c:2638
vfree+0x186/0x2e0 mm/vmalloc.c:3361
kcov_put kernel/kcov.c:439 [inline]
kcov_close+0x28/0x50 kernel/kcov.c:535
__fput+0x23f/0x880 fs/file_table.c:431
task_work_run+0x24f/0x310 kernel/task_work.c:228
exit_task_work include/linux/task_work.h:40 [inline]
do_exit+0xa2f/0x28e0 kernel/exit.c:939
do_group_exit+0x207/0x2c0 kernel/exit.c:1088
__do_sys_exit_group kernel/exit.c:1099 [inline]
__se_sys_exit_group kernel/exit.c:1097 [inline]
__x64_sys_exit_group+0x3f/0x40 kernel/exit.c:1097
x64_sys_call+0x2634/0x2640 arch/x86/include/generated/asm/syscalls_64.h:232
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: 0033:0x7f03da97dff9
Code: Unable to access opcode bytes at 0x7f03da97dfcf.
RSP: 002b:00007ffc6c87e6a8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
RAX: ffffffffffffffda RBX: 00007f03da9f1943 RCX: 00007f03da97dff9
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000043
RBP: 00007f03da9f1955 R08: 00007ffc6c87c447 R09: 00000000000402c9
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000006
R13: 00000000000402c9 R14: 00000000000402ae R15: 00007ffc6c87e840