INFO: rcu_preempt detected stalls on CPUs/tasks:
Tasks blocked on level-0 rcu_node (CPUs 0-1): P19988
(detected by 0, t=10503 jiffies, g=14679, c=14678, q=317)
syz-executor.3 R running task 28080 19988 7728 0x00000008
Call Trace:
sched_show_task kernel/sched/core.c:5168 [inline]
sched_show_task.cold+0x2e3/0x347 kernel/sched/core.c:5143
rcu_print_detail_task_stall_rnp+0xbf/0xf8 kernel/rcu/tree_plugin.h:568
rcu_print_detail_task_stall kernel/rcu/tree_plugin.h:581 [inline]
print_other_cpu_stall kernel/rcu/tree.c:1488 [inline]
check_cpu_stall kernel/rcu/tree.c:1616 [inline]
__rcu_pending kernel/rcu/tree.c:3390 [inline]
rcu_pending kernel/rcu/tree.c:3452 [inline]
rcu_check_callbacks.cold+0x7c7/0xdaa 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:orc_ip arch/x86/kernel/unwind_orc.c:27 [inline]
RIP: 0010:__orc_find+0x83/0xf0 arch/x86/kernel/unwind_orc.c:49
RSP: 0018:ffff8880aea07778 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff10
RAX: 0000000000000003 RBX: ffffffff88d5e1c8 RCX: ffffffff854705f1
RDX: fffffffffc7123dd RSI: ffffffff893ea21c RDI: ffffffff88d5e1a8
RBP: ffffffff88d5e1a8 R08: ffffffff893ea288 R09: ffff888047bbfae0
R10: ffff8880aea078a5 R11: 0000000000058071 R12: ffffffff88d5e1ec
R13: ffffffff88d5e1a8 R14: ffffffff88d5e1a8 R15: dffffc0000000000
orc_find arch/x86/kernel/unwind_orc.c:121 [inline]
unwind_next_frame+0x5de/0x17a0 arch/x86/kernel/unwind_orc.c:348
__save_stack_trace+0x6b/0xd0 arch/x86/kernel/stacktrace.c:44
save_stack+0x32/0xa0 mm/kasan/kasan.c:447
set_track mm/kasan/kasan.c:459 [inline]
kasan_kmalloc mm/kasan/kasan.c:551 [inline]
kasan_kmalloc+0xbf/0xe0 mm/kasan/kasan.c:529
slab_post_alloc_hook mm/slab.h:442 [inline]
slab_alloc_node mm/slab.c:3333 [inline]
kmem_cache_alloc_node+0x135/0x7a0 mm/slab.c:3640
__alloc_skb+0x9a/0x4c0 net/core/skbuff.c:193
alloc_skb include/linux/skbuff.h:980 [inline]
new_skb+0x24/0x1c0 drivers/block/aoe/aoecmd.c:67
aoecmd_cfg_pkts drivers/block/aoe/aoecmd.c:427 [inline]
aoecmd_cfg+0x155/0x570 drivers/block/aoe/aoecmd.c:1392
discover_timer drivers/block/aoe/aoemain.c:44 [inline]
discover_timer+0xc5/0x160 drivers/block/aoe/aoemain.c:21
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:__raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:161 [inline]
RIP: 0010:_raw_spin_unlock_irqrestore+0x9b/0xe0 kernel/locking/spinlock.c:192
RSP: 0018:ffff888047bbf6b8 EFLAGS: 00000286 ORIG_RAX: ffffffffffffff10
RAX: 1ffffffff0fa2ce1 RBX: 0000000000000286 RCX: 1ffff110113289b4
RDX: dffffc0000000000 RSI: ffff888089944dd0 RDI: 0000000000000001
RBP: ffffffff8a71cd08 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: dffffc0000000000
R13: ffff888047bbf768 R14: ffffffff8a71cd08 R15: 0000000000000000
__debug_check_no_obj_freed lib/debugobjects.c:760 [inline]
debug_check_no_obj_freed+0x28e/0x6e4 lib/debugobjects.c:776
free_pages_prepare mm/page_alloc.c:1063 [inline]
__free_pages_ok+0x22a/0xdf0 mm/page_alloc.c:1256
free_thread_stack kernel/fork.c:262 [inline]
release_task_stack kernel/fork.c:347 [inline]
put_task_stack+0x9d/0x1c0 kernel/fork.c:358
finish_task_switch+0x46b/0x620 kernel/sched/core.c:2692
context_switch kernel/sched/core.c:2811 [inline]
__schedule+0x7c0/0x1ca0 kernel/sched/core.c:3384
preempt_schedule_notrace kernel/sched/core.c:3582 [inline]
preempt_schedule_notrace+0x99/0x120 kernel/sched/core.c:3553
___preempt_schedule_notrace+0x16/0x27
rcu_read_unlock_sched_notrace include/linux/rcupdate.h:775 [inline]
trace_fib_table_lookup include/trace/events/fib.h:13 [inline]
fib_table_lookup+0x533/0x16a0 net/ipv4/fib_trie.c:1312
fib_lookup include/net/ip_fib.h:326 [inline]
ip_route_output_key_hash_rcu+0xd04/0x2710 net/ipv4/route.c:2451
ip_route_output_key_hash+0x18c/0x290 net/ipv4/route.c:2341
__ip_route_output_key include/net/route.h:126 [inline]
ip_route_output_flow+0x22/0xb0 net/ipv4/route.c:2600
ip_route_connect include/net/route.h:308 [inline]
tcp_v4_connect+0x7d1/0x1a70 net/ipv4/tcp_ipv4.c:173
__inet_stream_connect+0x6ad/0xb90 net/ipv4/af_inet.c:618
inet_stream_connect+0x53/0xa0 net/ipv4/af_inet.c:682
SYSC_connect+0x1c6/0x250 net/socket.c:1655
do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292
entry_SYSCALL_64_after_hwframe+0x42/0xb7
RIP: 0033:0x45c479
RSP: 002b:00007f065938cc78 EFLAGS: 00000246 ORIG_RAX: 000000000000002a
RAX: ffffffffffffffda RBX: 00007f065938d6d4 RCX: 000000000045c479
RDX: 0000000000000010 RSI: 0000000020606ff0 RDI: 0000000000000005
RBP: 000000000076bf20 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff
R13: 0000000000000081 R14: 00000000004c2d9d R15: 000000000076bf2c
syz-executor.3 R running task 28080 19988 7728 0x00000008
Call Trace:
sched_show_task kernel/sched/core.c:5168 [inline]
sched_show_task.cold+0x2e3/0x347 kernel/sched/core.c:5143
rcu_print_detail_task_stall_rnp+0xbf/0xf8 kernel/rcu/tree_plugin.h:568
rcu_print_detail_task_stall kernel/rcu/tree_plugin.h:583 [inline]
print_other_cpu_stall kernel/rcu/tree.c:1488 [inline]
check_cpu_stall kernel/rcu/tree.c:1616 [inline]
__rcu_pending kernel/rcu/tree.c:3390 [inline]
rcu_pending kernel/rcu/tree.c:3452 [inline]
rcu_check_callbacks.cold+0x81f/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:orc_ip arch/x86/kernel/unwind_orc.c:27 [inline]
RIP: 0010:__orc_find+0x83/0xf0 arch/x86/kernel/unwind_orc.c:49
RSP: 0018:ffff8880aea07778 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff10
RAX: 0000000000000003 RBX: ffffffff88d5e1c8 RCX: ffffffff854705f1
RDX: fffffffffc7123dd RSI: ffffffff893ea21c RDI: ffffffff88d5e1a8
RBP: ffffffff88d5e1a8 R08: ffffffff893ea288 R09: ffff888047bbfae0
R10: ffff8880aea078a5 R11: 0000000000058071 R12: ffffffff88d5e1ec
R13: ffffffff88d5e1a8 R14: ffffffff88d5e1a8 R15: dffffc0000000000
orc_find arch/x86/kernel/unwind_orc.c:121 [inline]
unwind_next_frame+0x5de/0x17a0 arch/x86/kernel/unwind_orc.c:348
__save_stack_trace+0x6b/0xd0 arch/x86/kernel/stacktrace.c:44
save_stack+0x32/0xa0 mm/kasan/kasan.c:447
set_track mm/kasan/kasan.c:459 [inline]
kasan_kmalloc mm/kasan/kasan.c:551 [inline]
kasan_kmalloc+0xbf/0xe0 mm/kasan/kasan.c:529
slab_post_alloc_hook mm/slab.h:442 [inline]
slab_alloc_node mm/slab.c:3333 [inline]
kmem_cache_alloc_node+0x135/0x7a0 mm/slab.c:3640
__alloc_skb+0x9a/0x4c0 net/core/skbuff.c:193
alloc_skb include/linux/skbuff.h:980 [inline]
new_skb+0x24/0x1c0 drivers/block/aoe/aoecmd.c:67
aoecmd_cfg_pkts drivers/block/aoe/aoecmd.c:427 [inline]
aoecmd_cfg+0x155/0x570 drivers/block/aoe/aoecmd.c:1392
discover_timer drivers/block/aoe/aoemain.c:44 [inline]
discover_timer+0xc5/0x160 drivers/block/aoe/aoemain.c:21
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:__raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:161 [inline]
RIP: 0010:_raw_spin_unlock_irqrestore+0x9b/0xe0 kernel/locking/spinlock.c:192
RSP: 0018:ffff888047bbf6b8 EFLAGS: 00000286 ORIG_RAX: ffffffffffffff10
RAX: 1ffffffff0fa2ce1 RBX: 0000000000000286 RCX: 1ffff110113289b4
RDX: dffffc0000000000 RSI: ffff888089944dd0 RDI: 0000000000000001
RBP: ffffffff8a71cd08 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: dffffc0000000000
R13: ffff888047bbf768 R14: ffffffff8a71cd08 R15: 0000000000000000
__debug_check_no_obj_freed lib/debugobjects.c:760 [inline]
debug_check_no_obj_freed+0x28e/0x6e4 lib/debugobjects.c:776
free_pages_prepare mm/page_alloc.c:1063 [inline]
__free_pages_ok+0x22a/0xdf0 mm/page_alloc.c:1256
free_thread_stack kernel/fork.c:262 [inline]
release_task_stack kernel/fork.c:347 [inline]
put_task_stack+0x9d/0x1c0 kernel/fork.c:358
finish_task_switch+0x46b/0x620 kernel/sched/core.c:2692
context_switch kernel/sched/core.c:2811 [inline]
__schedule+0x7c0/0x1ca0 kernel/sched/core.c:3384
preempt_schedule_notrace kernel/sched/core.c:3582 [inline]
preempt_schedule_notrace+0x99/0x120 kernel/sched/core.c:3553
___preempt_schedule_notrace+0x16/0x27
rcu_read_unlock_sched_notrace include/linux/rcupdate.h:775 [inline]
trace_fib_table_lookup include/trace/events/fib.h:13 [inline]
fib_table_lookup+0x533/0x16a0 net/ipv4/fib_trie.c:1312
fib_lookup include/net/ip_fib.h:326 [inline]
ip_route_output_key_hash_rcu+0xd04/0x2710 net/ipv4/route.c:2451
ip_route_output_key_hash+0x18c/0x290 net/ipv4/route.c:2341
__ip_route_output_key include/net/route.h:126 [inline]
ip_route_output_flow+0x22/0xb0 net/ipv4/route.c:2600
ip_route_connect include/net/route.h:308 [inline]
tcp_v4_connect+0x7d1/0x1a70 net/ipv4/tcp_ipv4.c:173
__inet_stream_connect+0x6ad/0xb90 net/ipv4/af_inet.c:618
inet_stream_connect+0x53/0xa0 net/ipv4/af_inet.c:682
SYSC_connect+0x1c6/0x250 net/socket.c:1655
do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292
entry_SYSCALL_64_after_hwframe+0x42/0xb7
RIP: 0033:0x45c479
RSP: 002b:00007f065938cc78 EFLAGS: 00000246 ORIG_RAX: 000000000000002a
RAX: ffffffffffffffda RBX: 00007f065938d6d4 RCX: 000000000045c479
RDX: 0000000000000010 RSI: 0000000020606ff0 RDI: 0000000000000005
RBP: 000000000076bf20 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff
R13: 0000000000000081 R14: 00000000004c2d9d R15: 000000000076bf2c
INFO: rcu_sched self-detected stall on CPU
0-...: (1 GPs behind) idle=6a2/140000000000002/0 softirq=48966/48967 fqs=7
(t=10501 jiffies g=10409 c=10408 q=22)
rcu_sched kthread starved for 358 jiffies! g10409 c10408 f0x0 RCU_GP_WAIT_FQS(3) ->state=0x0 ->cpu=1
INFO: rcu_sched detected stalls on CPUs/tasks:
rcu_sched R running task 29920 9 2 0x80000000
0-...: (1 GPs behind) idle=6a2/140000000000002/0 softirq=48966/48967 fqs=7
Call Trace:
(detected by 1, t=10502 jiffies, g=10409, c=10408, q=22)
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 19988 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: ffff888089944500 task.stack: ffff888047bb8000
RIP: 0010:vsnprintf+0xddc/0x1350 lib/vsprintf.c:2226
RSP: 0018:ffff8880aea06f18 EFLAGS: 00000046
RAX: 1ffff11015d40e0a RBX: dffffc0000000000 RCX: 0000000000000004
RDX: 0000000000010100 RSI: 0000000000000075 RDI: ffff8880aea07050
RBP: 0000000000000020 R08: ffffffff86aaf924 R09: ffffffff8a061bf0
R10: ffff888089944e70 R11: ffff888089944500 R12: 0000000000000001
R13: ffffffff86aaf925 R14: ffff8880aea06ff8 R15: ffff8880aea07050
FS: 00007f065938d700(0000) GS:ffff8880aea00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fcbe3cfd820 CR3: 0000000095526000 CR4: 00000000001426f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
snprintf+0xa5/0xd0 lib/vsprintf.c:2314
print_time kernel/printk/printk.c:1228 [inline]
print_prefix+0x237/0x3a0 kernel/printk/printk.c:1253
msg_print_text+0x82/0x1a0 kernel/printk/printk.c:1276
console_unlock+0x300/0xec0 kernel/printk/printk.c:2374
vprintk_emit kernel/printk/printk.c:1923 [inline]
vprintk_emit+0x1f8/0x600 kernel/printk/printk.c:1888
vprintk_func+0x58/0x152 kernel/printk/printk_safe.c:401
printk+0x9e/0xbc kernel/printk/printk.c:1996
printk_stack_address arch/x86/kernel/dumpstack.c:70 [inline]
show_trace_log_lvl+0x209/0x281 arch/x86/kernel/dumpstack.c:202
sched_show_task kernel/sched/core.c:5168 [inline]
sched_show_task.cold+0x2e3/0x347 kernel/sched/core.c:5143
rcu_check_gp_kthread_starvation+0x28d/0x2d4 kernel/rcu/tree.c:1374
print_cpu_stall kernel/rcu/tree.c:1540 [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+0x488/0xdaa 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:__module_address+0x28d/0x320 kernel/module.c:4300
RSP: 0018:ffff8880aea07788 EFLAGS: 00000282 ORIG_RAX: ffffffffffffff10
RAX: 0000000000000103 RBX: 000000000045c479 RCX: 0000000000000000
RDX: 0000000000000000 RSI: ffffffff86e453c0 RDI: 000000000045c479
RBP: 000000000045c479 R08: ffffffff8950b7e6 R09: ffff888047bbff58
R10: ffff8880aea0783d R11: 0000000000058071 R12: 0000000000000000
R13: 0000000000000000 R14: ffff888089944500 R15: ffff88809eca8d3f
__module_text_address+0xe/0x140 kernel/module.c:4342
is_module_text_address+0x18/0x47 kernel/module.c:4327
kernel_text_address+0x62/0xe0 kernel/extable.c:144
__kernel_text_address+0x9/0x30 kernel/extable.c:105
unwind_get_return_address arch/x86/kernel/unwind_orc.c:255 [inline]
unwind_get_return_address+0x5a/0xa0 arch/x86/kernel/unwind_orc.c:250
__save_stack_trace+0x7b/0xd0 arch/x86/kernel/stacktrace.c:45
save_stack+0x32/0xa0 mm/kasan/kasan.c:447
set_track mm/kasan/kasan.c:459 [inline]
kasan_kmalloc mm/kasan/kasan.c:551 [inline]
kasan_kmalloc+0xbf/0xe0 mm/kasan/kasan.c:529
slab_post_alloc_hook mm/slab.h:442 [inline]
slab_alloc_node mm/slab.c:3333 [inline]
kmem_cache_alloc_node_trace+0x144/0x7b0 mm/slab.c:3659
__do_kmalloc_node mm/slab.c:3681 [inline]
__kmalloc_node_track_caller+0x38/0x70 mm/slab.c:3696
__kmalloc_reserve.isra.0+0x35/0xd0 net/core/skbuff.c:137
__alloc_skb+0xca/0x4c0 net/core/skbuff.c:205
alloc_skb include/linux/skbuff.h:980 [inline]
new_skb+0x24/0x1c0 drivers/block/aoe/aoecmd.c:67
aoecmd_cfg_pkts drivers/block/aoe/aoecmd.c:427 [inline]
aoecmd_cfg+0x155/0x570 drivers/block/aoe/aoecmd.c:1392
discover_timer drivers/block/aoe/aoemain.c:44 [inline]
discover_timer+0xc5/0x160 drivers/block/aoe/aoemain.c:21
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:__raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:161 [inline]
RIP: 0010:_raw_spin_unlock_irqrestore+0x9b/0xe0 kernel/locking/spinlock.c:192
RSP: 0018:ffff888047bbf6b8 EFLAGS: 00000286 ORIG_RAX: ffffffffffffff10
RAX: 1ffffffff0fa2ce1 RBX: 0000000000000286 RCX: 1ffff110113289b4
RDX: dffffc0000000000 RSI: ffff888089944dd0 RDI: 0000000000000001
RBP: ffffffff8a71cd08 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: dffffc0000000000
R13: ffff888047bbf768 R14: ffffffff8a71cd08 R15: 0000000000000000
__debug_check_no_obj_freed lib/debugobjects.c:760 [inline]
debug_check_no_obj_freed+0x28e/0x6e4 lib/debugobjects.c:776
free_pages_prepare mm/page_alloc.c:1063 [inline]
__free_pages_ok+0x22a/0xdf0 mm/page_alloc.c:1256
free_thread_stack kernel/fork.c:262 [inline]
release_task_stack kernel/fork.c:347 [inline]
put_task_stack+0x9d/0x1c0 kernel/fork.c:358
finish_task_switch+0x46b/0x620 kernel/sched/core.c:2692
context_switch kernel/sched/core.c:2811 [inline]
__schedule+0x7c0/0x1ca0 kernel/sched/core.c:3384
preempt_schedule_notrace kernel/sched/core.c:3582 [inline]
preempt_schedule_notrace+0x99/0x120 kernel/sched/core.c:3553
___preempt_schedule_notrace+0x16/0x27
rcu_read_unlock_sched_notrace include/linux/rcupdate.h:775 [inline]
trace_fib_table_lookup include/trace/events/fib.h:13 [inline]
fib_table_lookup+0x533/0x16a0 net/ipv4/fib_trie.c:1312
fib_lookup include/net/ip_fib.h:326 [inline]
ip_route_output_key_hash_rcu+0xd04/0x2710 net/ipv4/route.c:2451
ip_route_output_key_hash+0x18c/0x290 net/ipv4/route.c:2341
__ip_route_output_key include/net/route.h:126 [inline]
ip_route_output_flow+0x22/0xb0 net/ipv4/route.c:2600
ip_route_connect include/net/route.h:308 [inline]
tcp_v4_connect+0x7d1/0x1a70 net/ipv4/tcp_ipv4.c:173
__inet_stream_connect+0x6ad/0xb90 net/ipv4/af_inet.c:618
inet_stream_connect+0x53/0xa0 net/ipv4/af_inet.c:682
SYSC_connect+0x1c6/0x250 net/socket.c:1655
do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292
entry_SYSCALL_64_after_hwframe+0x42/0xb7
RIP: 0033:0x45c479
RSP: 002b:00007f065938cc78 EFLAGS: 00000246 ORIG_RAX: 000000000000002a
RAX: ffffffffffffffda RBX: 00007f065938d6d4 RCX: 000000000045c479
RDX: 0000000000000010 RSI: 0000000020606ff0 RDI: 0000000000000005
RBP: 000000000076bf20 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff
R13: 0000000000000081 R14: 00000000004c2d9d R15: 000000000076bf2c
Code: 0f 85 72 04 00 00 89 ef 49 03 7e 10 83 c5 08 41 89 2e 49 89 ff e8 75 99 1d fb 4c 89 f8 48 c1 e8 03 80 3c 18 00 0f 85 40 04 00 00 <4d> 8b 3f e9 c6 f3 ff ff e8 57 99 1d fb 0f 0b 45 31 ed e9 66 f4
rcu_sched kthread starved for 359 jiffies! g10409 c10408 f0x0 RCU_GP_WAIT_FQS(3) ->state=0x0 ->cpu=1
rcu_sched R running task
schedule+0x8d/0x1b0 kernel/sched/core.c:3428
29920 9 2 0x80000000
schedule_timeout+0x43c/0xe40 kernel/time/timer.c:1746
Call Trace:
schedule+0x8d/0x1b0 kernel/sched/core.c:3428
rcu_gp_kthread+0xb8e/0x1ce0 kernel/rcu/tree.c:2255
schedule_timeout+0x43c/0xe40 kernel/time/timer.c:1746
kthread+0x30d/0x420 kernel/kthread.c:232
ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:404
rcu_gp_kthread+0xb8e/0x1ce0 kernel/rcu/tree.c:2255
NMI backtrace for cpu 0
CPU: 0 PID: 19988 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
kthread+0x30d/0x420 kernel/kthread.c:232
Call Trace:
ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:404
__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:__module_address+0x28d/0x320 kernel/module.c:4300
RSP: 0018:ffff8880aea07788 EFLAGS: 00000282 ORIG_RAX: ffffffffffffff10
RAX: 0000000000000103 RBX: 000000000045c479 RCX: 0000000000000000
RDX: 0000000000000000 RSI: ffffffff86e453c0 RDI: 000000000045c479
RBP: 000000000045c479 R08: ffffffff8950b7e6 R09: ffff888047bbff58
R10: ffff8880aea0783d R11: 0000000000058071 R12: 0000000000000000
R13: 0000000000000000 R14: ffff888089944500 R15: ffff88809eca8d3f
__module_text_address+0xe/0x140 kernel/module.c:4342
is_module_text_address+0x18/0x47 kernel/module.c:4327
kernel_text_address+0x62/0xe0 kernel/extable.c:144
__kernel_text_address+0x9/0x30 kernel/extable.c:105
unwind_get_return_address arch/x86/kernel/unwind_orc.c:255 [inline]
unwind_get_return_address+0x5a/0xa0 arch/x86/kernel/unwind_orc.c:250
__save_stack_trace+0x7b/0xd0 arch/x86/kernel/stacktrace.c:45
save_stack+0x32/0xa0 mm/kasan/kasan.c:447
set_track mm/kasan/kasan.c:459 [inline]
kasan_kmalloc mm/kasan/kasan.c:551 [inline]
kasan_kmalloc+0xbf/0xe0 mm/kasan/kasan.c:529
slab_post_alloc_hook mm/slab.h:442 [inline]
slab_alloc_node mm/slab.c:3333 [inline]
kmem_cache_alloc_node_trace+0x144/0x7b0 mm/slab.c:3659
__do_kmalloc_node mm/slab.c:3681 [inline]
__kmalloc_node_track_caller+0x38/0x70 mm/slab.c:3696
__kmalloc_reserve.isra.0+0x35/0xd0 net/core/skbuff.c:137
__alloc_skb+0xca/0x4c0 net/core/skbuff.c:205
alloc_skb include/linux/skbuff.h:980 [inline]
new_skb+0x24/0x1c0 drivers/block/aoe/aoecmd.c:67
aoecmd_cfg_pkts drivers/block/aoe/aoecmd.c:427 [inline]
aoecmd_cfg+0x155/0x570 drivers/block/aoe/aoecmd.c:1392
discover_timer drivers/block/aoe/aoemain.c:44 [inline]
discover_timer+0xc5/0x160 drivers/block/aoe/aoemain.c:21
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:__raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:161 [inline]
RIP: 0010:_raw_spin_unlock_irqrestore+0x9b/0xe0 kernel/locking/spinlock.c:192
RSP: 0018:ffff888047bbf6b8 EFLAGS: 00000286 ORIG_RAX: ffffffffffffff10
RAX: 1ffffffff0fa2ce1 RBX: 0000000000000286 RCX: 1ffff110113289b4
RDX: dffffc0000000000 RSI: ffff888089944dd0 RDI: 0000000000000001
RBP: ffffffff8a71cd08 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: dffffc0000000000
R13: ffff888047bbf768 R14: ffffffff8a71cd08 R15: 0000000000000000
__debug_check_no_obj_freed lib/debugobjects.c:760 [inline]
debug_check_no_obj_freed+0x28e/0x6e4 lib/debugobjects.c:776
free_pages_prepare mm/page_alloc.c:1063 [inline]
__free_pages_ok+0x22a/0xdf0 mm/page_alloc.c:1256
free_thread_stack kernel/fork.c:262 [inline]
release_task_stack kernel/fork.c:347 [inline]
put_task_stack+0x9d/0x1c0 kernel/fork.c:358
finish_task_switch+0x46b/0x620 kernel/sched/core.c:2692
context_switch kernel/sched/core.c:2811 [inline]
__schedule+0x7c0/0x1ca0 kernel/sched/core.c:3384
preempt_schedule_notrace kernel/sched/core.c:3582 [inline]
preempt_schedule_notrace+0x99/0x120 kernel/sched/core.c:3553
___preempt_schedule_notrace+0x16/0x27
rcu_read_unlock_sched_notrace include/linux/rcupdate.h:775 [inline]
trace_fib_table_lookup include/trace/events/fib.h:13 [inline]
fib_table_lookup+0x533/0x16a0 net/ipv4/fib_trie.c:1312
fib_lookup include/net/ip_fib.h:326 [inline]
ip_route_output_key_hash_rcu+0xd04/0x2710 net/ipv4/route.c:2451
ip_route_output_key_hash+0x18c/0x290 net/ipv4/route.c:2341
__ip_route_output_key include/net/route.h:126 [inline]
ip_route_output_flow+0x22/0xb0 net/ipv4/route.c:2600
ip_route_connect include/net/route.h:308 [inline]
tcp_v4_connect+0x7d1/0x1a70 net/ipv4/tcp_ipv4.c:173
__inet_stream_connect+0x6ad/0xb90 net/ipv4/af_inet.c:618
inet_stream_connect+0x53/0xa0 net/ipv4/af_inet.c:682
SYSC_connect+0x1c6/0x250 net/socket.c:1655
do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292
entry_SYSCALL_64_after_hwframe+0x42/0xb7
RIP: 0033:0x45c479
RSP: 002b:00007f065938cc78 EFLAGS: 00000246 ORIG_RAX: 000000000000002a
RAX: ffffffffffffffda RBX: 00007f065938d6d4 RCX: 000000000045c479
RDX: 0000000000000010 RSI: 0000000020606ff0 RDI: 0000000000000005
RBP: 000000000076bf20 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff
R13: 0000000000000081 R14: 00000000004c2d9d R15: 000000000076bf2c
INFO: NMI handler (nmi_cpu_backtrace_handler) took too long to run: 1.198 msecs