netlink: 4 bytes leftover after parsing attributes in process `syz-executor.2'.
INFO: rcu_preempt self-detected stall on CPU
0-...: (10500 ticks this GP) idle=e36/140000000000002/0 softirq=81551/81551 fqs=0
(t=10500 jiffies g=21038 c=21037 q=186)
rcu_preempt kthread starved for 10500 jiffies! g21038 c21037 f0x0 RCU_GP_WAIT_FQS(3) ->state=0x0 ->cpu=0
rcu_preempt R running task 29984 8 2 0x80000000
Call Trace:
schedule+0x8d/0x1b0 kernel/sched/core.c:3428
schedule_timeout+0x43c/0xe40 kernel/time/timer.c:1746
rcu_gp_kthread+0xb8e/0x1ce0 kernel/rcu/tree.c:2255
kthread+0x30d/0x420 kernel/kthread.c:232
ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:404
NMI backtrace for cpu 0
CPU: 0 PID: 28056 Comm: syz-executor.3 Not tainted 4.14.172-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
__dump_stack lib/dump_stack.c:17 [inline]
dump_stack+0x13e/0x194 lib/dump_stack.c:58
nmi_cpu_backtrace.cold+0x57/0x93 lib/nmi_backtrace.c:101
nmi_trigger_cpumask_backtrace+0x139/0x17e lib/nmi_backtrace.c:62
trigger_single_cpu_backtrace include/linux/nmi.h:158 [inline]
rcu_dump_cpu_stacks+0x16d/0x1b8 kernel/rcu/tree.c:1396
print_cpu_stall kernel/rcu/tree.c:1542 [inline]
check_cpu_stall kernel/rcu/tree.c:1610 [inline]
__rcu_pending kernel/rcu/tree.c:3390 [inline]
rcu_pending kernel/rcu/tree.c:3452 [inline]
rcu_check_callbacks.cold+0x490/0xdaa kernel/rcu/tree.c:2792
update_process_times+0x29/0x60 kernel/time/timer.c:1590
tick_sched_handle+0x7d/0x150 kernel/time/tick-sched.c:165
tick_sched_timer+0x3e/0x120 kernel/time/tick-sched.c:1223
__run_hrtimer kernel/time/hrtimer.c:1223 [inline]
__hrtimer_run_queues+0x25c/0xbb0 kernel/time/hrtimer.c:1287
hrtimer_interrupt+0x1e6/0x5e0 kernel/time/hrtimer.c:1321
local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1075 [inline]
smp_apic_timer_interrupt+0x117/0x5e0 arch/x86/kernel/apic/apic.c:1100
apic_timer_interrupt+0x8f/0xa0 arch/x86/entry/entry_64.S:792
RIP: 0010:arch_static_branch arch/x86/include/asm/jump_label.h:36 [inline]
RIP: 0010:static_key_false include/linux/jump_label.h:142 [inline]
RIP: 0010:trace_timer_expire_exit include/trace/events/timer.h:121 [inline]
RIP: 0010:call_timer_fn+0x14f/0x650 kernel/time/timer.c:1280
RSP: 0018:ffff8880aea07d78 EFLAGS: 00000206 ORIG_RAX: ffffffffffffff10
RAX: dffffc0000000000 RBX: ffff88809905f078 RCX: 0000000000000000
RDX: 0000000000000100 RSI: 0000000000000005 RDI: 0000000000000001
RBP: 0000000000000101 R08: 0000000000000001 R09: 0000000000000004
R10: 0000000000000000 R11: 0000000000000000 R12: ffff8880aea07db0
R13: 1ffff11015d40fb2 R14: ffff88809905ed80 R15: 0000000000000000
expire_timers kernel/time/timer.c:1318 [inline]
__run_timers kernel/time/timer.c:1636 [inline]
__run_timers kernel/time/timer.c:1604 [inline]
run_timer_softirq+0x52a/0x1390 kernel/time/timer.c:1649
__do_softirq+0x254/0x9bf kernel/softirq.c:288
invoke_softirq kernel/softirq.c:368 [inline]
irq_exit+0x15b/0x1a0 kernel/softirq.c:409
exiting_irq arch/x86/include/asm/apic.h:648 [inline]
smp_apic_timer_interrupt+0x141/0x5e0 arch/x86/kernel/apic/apic.c:1102
apic_timer_interrupt+0x8f/0xa0 arch/x86/entry/entry_64.S:792
RIP: 0010:ext4_do_update_inode fs/ext4/inode.c:5138 [inline]
RIP: 0010:ext4_mark_iloc_dirty+0x698/0x2850 fs/ext4/inode.c:5746
RSP: 0018:ffff8880a9a4f9c8 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff10
RAX: dffffc0000000000 RBX: ffff888096248730 RCX: ffffc9000b04d000
RDX: 1ffff11012c490f5 RSI: ffffffff81bf13e5 RDI: ffff88808249b10c
RBP: ffff88808249b100 R08: 00000000000002b4 R09: ffffffff8a05ce60
R10: ffff88807babedd0 R11: 0000000000000000 R12: ffff8880962487a8
R13: 000000005e64d592 R14: ffff888099c3a5c0 R15: ffff8880a9a4faf8
ext4_mark_inode_dirty+0x1cb/0x7b0 fs/ext4/inode.c:5940
add_dirent_to_buf+0x367/0x610 fs/ext4/namei.c:1917
ext4_add_entry+0x48b/0xa80 fs/ext4/namei.c:2122
ext4_mkdir+0x5a6/0xb60 fs/ext4/namei.c:2680
vfs_mkdir+0x3af/0x620 fs/namei.c:3849
SYSC_mkdirat fs/namei.c:3872 [inline]
SyS_mkdirat fs/namei.c:3856 [inline]
SYSC_mkdir fs/namei.c:3883 [inline]
SyS_mkdir+0x1bc/0x210 fs/namei.c:3881
do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292
entry_SYSCALL_64_after_hwframe+0x42/0xb7
RIP: 0033:0x45c4a9
RSP: 002b:00007f855ce0fc78 EFLAGS: 00000246 ORIG_RAX: 0000000000000053
RAX: ffffffffffffffda RBX: 00007f855ce106d4 RCX: 000000000045c4a9
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000020000180
RBP: 000000000076bf20 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff
R13: 000000000000072d R14: 00000000004c1fb8 R15: 000000000076bf2c
INFO: rcu_sched detected stalls on CPUs/tasks:
0-...: (10501 ticks this GP) idle=e36/140000000000002/0 softirq=81551/81551 fqs=0
(detected by 1, t=10553 jiffies, g=16559, c=16558, q=2)
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 28056 Comm: syz-executor.3 Not tainted 4.14.172-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
task: ffff88807babe500 task.stack: ffff8880a9a48000
RIP: 0010:lock_acquire+0x149/0x3f0 kernel/locking/lockdep.c:3994
RSP: 0018:ffff8880aea076e8 EFLAGS: 00000002
RAX: 0000000000000000 RBX: ffff88807babe500 RCX: 1ffffffff1027974
RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffff88807babed7c
RBP: ffffffff87d843e0 R08: 0000000000000000 R09: 0000000000000086
R10: ffff88821fff7010 R11: 0000000000000001 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000002
FS: 00007f855ce10700(0000) GS:ffff8880aea00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fff2553acd0 CR3: 000000009934f000 CR4: 00000000001426f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
rcu_lock_acquire include/linux/rcupdate.h:242 [inline]
rcu_read_lock include/linux/rcupdate.h:629 [inline]
ring_buffer_wakeup kernel/events/core.c:5143 [inline]
perf_event_wakeup+0x38/0x350 kernel/events/core.c:5566
perf_pending_event+0xa5/0xd0 kernel/events/core.c:5593
irq_work_run_list+0xf0/0x160 kernel/irq_work.c:156
irq_work_run+0x4e/0xb0 kernel/irq_work.c:171
smp_irq_work_interrupt+0xa3/0x4e0 arch/x86/kernel/irq_work.c:21
irq_work_interrupt+0x8f/0xa0 arch/x86/entry/entry_64.S:823
RIP: 0010:dev_queue_xmit+0x1/0x20 net/core/dev.c:3557
RSP: 0018:ffff8880aea078b0 EFLAGS: 00000206 ORIG_RAX: ffffffffffffff09
RAX: ffff88807babe500 RBX: dffffc0000000000 RCX: 0000000000000000
RDX: 0000000000000100 RSI: ffff888097a093c6 RDI: ffff88809db45800
RBP: ffff88809db45800 R08: ffff8880915f8310 R09: ffffed1011c31a09
R10: ffffed1011c31a08 R11: ffff88808e18d047 R12: ffff888097a09360
R13: 0000000000000000 R14: 000000000000000e R15: ffff888097a09240
neigh_connected_output+0x3a6/0x580 net/core/neighbour.c:1398
neigh_output include/net/neighbour.h:500 [inline]
ip6_finish_output2+0x992/0x2150 net/ipv6/ip6_output.c:120
ip6_finish_output+0x4d9/0xaf0 net/ipv6/ip6_output.c:154
NF_HOOK_COND include/linux/netfilter.h:239 [inline]
ip6_output+0x1c9/0x650 net/ipv6/ip6_output.c:171
dst_output include/net/dst.h:462 [inline]
NF_HOOK include/linux/netfilter.h:250 [inline]
ndisc_send_skb+0xb56/0x11e0 net/ipv6/ndisc.c:483
ndisc_send_rs+0x125/0x630 net/ipv6/ndisc.c:677
addrconf_rs_timer+0x289/0x5a0 net/ipv6/addrconf.c:3757
call_timer_fn+0x14a/0x650 kernel/time/timer.c:1279
expire_timers kernel/time/timer.c:1318 [inline]
__run_timers kernel/time/timer.c:1636 [inline]
__run_timers kernel/time/timer.c:1604 [inline]
run_timer_softirq+0x52a/0x1390 kernel/time/timer.c:1649
__do_softirq+0x254/0x9bf kernel/softirq.c:288
invoke_softirq kernel/softirq.c:368 [inline]
irq_exit+0x15b/0x1a0 kernel/softirq.c:409
exiting_irq arch/x86/include/asm/apic.h:648 [inline]
smp_apic_timer_interrupt+0x141/0x5e0 arch/x86/kernel/apic/apic.c:1102
apic_timer_interrupt+0x8f/0xa0 arch/x86/entry/entry_64.S:792
RIP: 0010:ext4_do_update_inode fs/ext4/inode.c:5138 [inline]
RIP: 0010:ext4_mark_iloc_dirty+0x698/0x2850 fs/ext4/inode.c:5746
RSP: 0018:ffff8880a9a4f9c8 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff10
RAX: dffffc0000000000 RBX: ffff888096248730 RCX: ffffc9000b04d000
RDX: 1ffff11012c490f5 RSI: ffffffff81bf13e5 RDI: ffff88808249b10c
RBP: ffff88808249b100 R08: 00000000000002b4 R09: ffffffff8a05ce60
R10: ffff88807babedd0 R11: 0000000000000000 R12: ffff8880962487a8
R13: 000000005e64d592 R14: ffff888099c3a5c0 R15: ffff8880a9a4faf8
ext4_mark_inode_dirty+0x1cb/0x7b0 fs/ext4/inode.c:5940
add_dirent_to_buf+0x367/0x610 fs/ext4/namei.c:1917
ext4_add_entry+0x48b/0xa80 fs/ext4/namei.c:2122
ext4_mkdir+0x5a6/0xb60 fs/ext4/namei.c:2680
vfs_mkdir+0x3af/0x620 fs/namei.c:3849
SYSC_mkdirat fs/namei.c:3872 [inline]
SyS_mkdirat fs/namei.c:3856 [inline]
SYSC_mkdir fs/namei.c:3883 [inline]
SyS_mkdir+0x1bc/0x210 fs/namei.c:3881
do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292
entry_SYSCALL_64_after_hwframe+0x42/0xb7
RIP: 0033:0x45c4a9
RSP: 002b:00007f855ce0fc78 EFLAGS: 00000246 ORIG_RAX: 0000000000000053
RAX: ffffffffffffffda RBX: 00007f855ce106d4 RCX: 000000000045c4a9
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000020000180
RBP: 000000000076bf20 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff
R13: 000000000000072d R14: 00000000004c1fb8 R15: 000000000076bf2c
Code: 00 65 8b 05 0a 4a bb 7e 83 f8 3f 0f 87 02 02 00 00 89 c0 48 0f a3 05 df e8 4b 07 0f 82 b5 01 00 00 4c 8b 4c 24 08 44 89 ea 6a 00 <48> 89 ef 6a 00 45 89 f0 44 89 f9 44 89 e6 ff 74 24 60 ff 74 24
rcu_sched kthread starved for 10554 jiffies! g16559 c16558 f0x0 RCU_GP_WAIT_FQS(3) ->state=0x0 ->cpu=1
rcu_sched R running task 29920 9 2 0x80000000
Call Trace:
schedule+0x8d/0x1b0 kernel/sched/core.c:3428
schedule_timeout+0x43c/0xe40 kernel/time/timer.c:1746
rcu_gp_kthread+0xb8e/0x1ce0 kernel/rcu/tree.c:2255
kthread+0x30d/0x420 kernel/kthread.c:232
ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:404
ip_tables: iptables: counters copy to user failed while replacing table