INFO: rcu detected stall in corrupted (2)
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syzbot
Jan 4, 2020, 3:54:08 AM1/4/20
to syzkaller...@googlegroups.com
Hello,
syzbot found the following crash on:
HEAD commit: 4c5bf01e Linux 4.14.161
git tree: linux-4.14.y
console output: https://syzkaller.appspot.com/x/log.txt?x=1142ee3ee00000
kernel config: https://syzkaller.appspot.com/x/.config?x=b10bf1ad4786130a
dashboard link: https://syzkaller.appspot.com/bug?extid=58e46c9db31b4c06a7b0
compiler: gcc (GCC) 9.0.0 20181231 (experimental)
syz repro: https://syzkaller.appspot.com/x/repro.syz?x=12fb2869e00000
C reproducer: https://syzkaller.appspot.com/x/repro.c?x=16558115e00000
IMPORTANT: if you fix the bug, please add the following tag to the commit:
Reported-by: syzbot+58e46c...@syzkaller.appspotmail.com
IPv6: ADDRCONF(NETDEV_UP): veth1_virt_wifi: link is not ready
IPv6: ADDRCONF(NETDEV_UP): veth0_vlan: link is not ready
IPv6: ADDRCONF(NETDEV_UP): vlan0: link is not ready
IPv6: ADDRCONF(NETDEV_UP): vlan1: link is not ready
INFO: rcu_preempt self-detected stall on CPU
1-...: (1 GPs behind) idle=662/140000000000002/0 softirq=12793/12799 fqs=16
(t=10501 jiffies g=1600 c=1599 q=797)
rcu_preempt kthread starved for 3826 jiffies! g1600 c1599 f0x0
RCU_GP_WAIT_FQS(3) ->state=0x0 ->cpu=0
INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu_preempt R
running task 29824 8 2 0x80000000
1-...: (1 GPs behind) idle=662/140000000000002/0 softirq=12793/12799 fqs=16
Call Trace:
context_switch kernel/sched/core.c:2808 [inline]
__schedule+0x7b8/0x1cd0 kernel/sched/core.c:3384
(detected by 0, t=10502 jiffies, g=1600, c=1599, q=798)
Sending NMI from CPU 0 to CPUs 1:
schedule+0x92/0x1c0 kernel/sched/core.c:3428
NMI backtrace for cpu 1
CPU: 1 PID: 7542 Comm: syz-executor179 Not tainted 4.14.161-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS
Google 01/01/2011
task: ffff88808966a380 task.stack: ffff8880a64f0000
RIP: 0010:__lock_acquire+0x5ed/0x4620 kernel/locking/lockdep.c:3448
RSP: 0000:ffff8880aed073a0 EFLAGS: 00000002
RAX: 000000000000000c RBX: 0000000000000001 RCX: 1ffff110112cd598
RDX: 0000000000000008 RSI: ffff88808966aca0 RDI: ffff88808966a380
RBP: ffff8880aed07548 R08: 0000000000000001 R09: ffff88808966acc0
R10: ffff88808966aca0 R11: ffff88808966a380 R12: ffffffff87f80100
R13: 0000000000000008 R14: 0000000000000004 R15: ffff88808966acc2
FS: 0000000000000000(0000) GS:ffff8880aed00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fe9f7a241c4 CR3: 0000000079cab000 CR4: 00000000001406e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
<IRQ>
lock_acquire+0x16f/0x430 kernel/locking/lockdep.c:3994
console_lock_spinning_enable kernel/printk/printk.c:1588 [inline]
console_unlock+0x3db/0xed0 kernel/printk/printk.c:2394
vprintk_emit kernel/printk/printk.c:1923 [inline]
vprintk_emit+0x1f9/0x600 kernel/printk/printk.c:1888
vprintk_default+0x28/0x30 kernel/printk/printk.c:1963
vprintk_func+0x5d/0x159 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+0x22d/0x26b arch/x86/kernel/dumpstack.c:202
show_stack+0x39/0x3b arch/x86/kernel/dumpstack.c:237
sched_show_task kernel/sched/core.c:5168 [inline]
sched_show_task.cold+0x2f0/0x351 kernel/sched/core.c:5143
rcu_check_gp_kthread_starvation+0x28e/0x2c7 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+0x435/0xd0a kernel/rcu/tree.c:2792
update_process_times+0x31/0x70 kernel/time/timer.c:1590
tick_sched_handle+0x85/0x160 kernel/time/tick-sched.c:161
tick_sched_timer+0x43/0x130 kernel/time/tick-sched.c:1219
__run_hrtimer kernel/time/hrtimer.c:1220 [inline]
__hrtimer_run_queues+0x270/0xbc0 kernel/time/hrtimer.c:1284
hrtimer_interrupt+0x1d8/0x5d0 kernel/time/hrtimer.c:1318
local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1075 [inline]
smp_apic_timer_interrupt+0x11c/0x5e0 arch/x86/kernel/apic/apic.c:1100
apic_timer_interrupt+0x96/0xa0 arch/x86/entry/entry_64.S:792
RIP: 0010:arch_local_irq_restore arch/x86/include/asm/paravirt.h:779
[inline]
RIP: 0010:__raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:160
[inline]
RIP: 0010:_raw_spin_unlock_irqrestore+0x95/0xe0
kernel/locking/spinlock.c:192
RSP: 0000:ffff8880aed07cd0 EFLAGS: 00000282 ORIG_RAX: ffffffffffffff10
RAX: 1ffffffff0fe2d29 RBX: 0000000000000282 RCX: 1ffff110112cd58e
RDX: dffffc0000000000 RSI: ffff88808966ac50 RDI: 0000000000000282
RBP: ffff8880aed07ce0 R08: ffff88808966a380 R09: ffff88808966ac70
R10: 0000000000000000 R11: 0000000000000000 R12: ffff88808a6df670
R13: 0000000000000282 R14: ffff88808a6df670 R15: 0000000000000001
spin_unlock_irqrestore include/linux/spinlock.h:372 [inline]
skb_dequeue+0x12e/0x180 net/core/skbuff.c:2818
garp_queue_xmit net/802/garp.c:261 [inline]
garp_join_timer+0x5f/0x80 net/802/garp.c:413
call_timer_fn+0x161/0x670 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+0x5b7/0x1520 kernel/time/timer.c:1649
__do_softirq+0x244/0x9a0 kernel/softirq.c:288
invoke_softirq kernel/softirq.c:368 [inline]
irq_exit+0x160/0x1b0 kernel/softirq.c:409
exiting_irq arch/x86/include/asm/apic.h:648 [inline]
smp_apic_timer_interrupt+0x146/0x5e0 arch/x86/kernel/apic/apic.c:1102
apic_timer_interrupt+0x96/0xa0 arch/x86/entry/entry_64.S:792
</IRQ>
RIP: 0010:arch_local_irq_restore arch/x86/include/asm/paravirt.h:779
[inline]
RIP: 0010:lock_acquire+0x1ea/0x430 kernel/locking/lockdep.c:3997
RSP: 0000:ffff8880a64f76d0 EFLAGS: 00000282 ORIG_RAX: ffffffffffffff10
RAX: 1ffffffff0fe2d29 RBX: ffff88808966a380 RCX: 00000000eff106db
RDX: dffffc0000000000 RSI: ffff88808966ac28 RDI: 0000000000000282
RBP: ffff8880a64f7718 R08: 0000000000000000 R09: ffff88808966ac48
R10: ffff88808966ac28 R11: ffff88808966a380 R12: ffffffff87f88960
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000002
rcu_lock_acquire include/linux/rcupdate.h:242 [inline]
rcu_read_lock include/linux/rcupdate.h:629 [inline]
lock_page_memcg+0x39/0x220 mm/memcontrol.c:1669
page_remove_file_rmap mm/rmap.c:1211 [inline]
page_remove_rmap+0x19f/0x940 mm/rmap.c:1296
zap_pte_range mm/memory.c:1342 [inline]
zap_pmd_range mm/memory.c:1444 [inline]
zap_pud_range mm/memory.c:1473 [inline]
zap_p4d_range mm/memory.c:1494 [inline]
unmap_page_range+0xabd/0x19f0 mm/memory.c:1515
unmap_single_vma+0x15d/0x2c0 mm/memory.c:1560
unmap_vmas+0xac/0x170 mm/memory.c:1590
exit_mmap+0x285/0x4e0 mm/mmap.c:3062
__mmput kernel/fork.c:930 [inline]
mmput+0x114/0x440 kernel/fork.c:951
exit_mm kernel/exit.c:545 [inline]
do_exit+0x6fc/0x2c80 kernel/exit.c:841
do_group_exit+0x111/0x330 kernel/exit.c:951
get_signal+0x381/0x1cd0 kernel/signal.c:2413
do_signal+0x86/0x19a0 arch/x86/kernel/signal.c:814
exit_to_usermode_loop+0x15c/0x220 arch/x86/entry/common.c:160
prepare_exit_to_usermode+0x1b5/0x220 arch/x86/entry/common.c:199
retint_user+0x8/0x18
RIP: 0033:0x443349
RSP: 002b:00007ffc6e19c548 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff10
RAX: fffffffffffffff7 RBX: 0000000000000003 RCX: 0000000000443349
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 00000000ffffffff
RBP: 0000000000000000 R08: 00000000004aa90c R09: 00000000004aa90c
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000009
R13: 00000000004040a0 R14: 0000000000000000 R15: 0000000000000000
Code: 0f 8e 7e 31 00 00 45 8b 8b 68 08 00 00 ba 07 00 00 00 45 85 c9 0f 85
41 06 00 00 4c 89 d6 4c 89 df ba 08 00 00 00 4c 89 54 24 70 <4c> 89 5c 24
78 e8 29 e1 ff ff 4c 8b 5c 24 78 85 c0 4c 8b 54 24
rcu_preempt kthread starved for 3827 jiffies! g1600 c1599 f0x0
RCU_GP_WAIT_FQS(3) ->state=0x0 ->cpu=0
schedule_timeout+0x43e/0xe10 kernel/time/timer.c:1746
rcu_preempt R
running task 29824 8 2 0x80000000
Call Trace:
context_switch kernel/sched/core.c:2808 [inline]
__schedule+0x7b8/0x1cd0 kernel/sched/core.c:3384
rcu_gp_kthread+0xbf4/0x1ec0 kernel/rcu/tree.c:2255
schedule+0x92/0x1c0 kernel/sched/core.c:3428
kthread+0x319/0x430 kernel/kthread.c:232
schedule_timeout+0x43e/0xe10 kernel/time/timer.c:1746
ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:404
NMI backtrace for cpu 1
CPU: 1 PID: 7542 Comm: syz-executor179 Not tainted 4.14.161-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS
Google 01/01/2011
rcu_gp_kthread+0xbf4/0x1ec0 kernel/rcu/tree.c:2255
Call Trace:
<IRQ>
kthread+0x319/0x430 kernel/kthread.c:232
__dump_stack lib/dump_stack.c:17 [inline]
dump_stack+0x142/0x197 lib/dump_stack.c:58
nmi_cpu_backtrace.cold+0x57/0x94 lib/nmi_backtrace.c:101
ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:404
nmi_trigger_cpumask_backtrace+0x141/0x189 lib/nmi_backtrace.c:62
arch_trigger_cpumask_backtrace+0x14/0x20 arch/x86/kernel/apic/hw_nmi.c:38
trigger_single_cpu_backtrace include/linux/nmi.h:158 [inline]
rcu_dump_cpu_stacks+0x186/0x1d2 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+0x43d/0xd0a kernel/rcu/tree.c:2792
update_process_times+0x31/0x70 kernel/time/timer.c:1590
tick_sched_handle+0x85/0x160 kernel/time/tick-sched.c:161
tick_sched_timer+0x43/0x130 kernel/time/tick-sched.c:1219
__run_hrtimer kernel/time/hrtimer.c:1220 [inline]
__hrtimer_run_queues+0x270/0xbc0 kernel/time/hrtimer.c:1284
hrtimer_interrupt+0x1d8/0x5d0 kernel/time/hrtimer.c:1318
local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1075 [inline]
smp_apic_timer_interrupt+0x11c/0x5e0 arch/x86/kernel/apic/apic.c:1100
apic_timer_interrupt+0x96/0xa0 arch/x86/entry/entry_64.S:792
RIP: 0010:arch_local_irq_restore arch/x86/include/asm/paravirt.h:779
[inline]
RIP: 0010:__raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:160
[inline]
RIP: 0010:_raw_spin_unlock_irqrestore+0x95/0xe0
kernel/locking/spinlock.c:192
RSP: 0000:ffff8880aed07cd0 EFLAGS: 00000282 ORIG_RAX: ffffffffffffff10
RAX: 1ffffffff0fe2d29 RBX: 0000000000000282 RCX: 1ffff110112cd58e
RDX: dffffc0000000000 RSI: ffff88808966ac50 RDI: 0000000000000282
RBP: ffff8880aed07ce0 R08: ffff88808966a380 R09: ffff88808966ac70
R10: 0000000000000000 R11: 0000000000000000 R12: ffff88808a6df670
R13: 0000000000000282 R14: ffff88808a6df670 R15: 0000000000000001
spin_unlock_irqrestore include/linux/spinlock.h:372 [inline]
skb_dequeue+0x12e/0x180 net/core/skbuff.c:2818
garp_queue_xmit net/802/garp.c:261 [inline]
garp_join_timer+0x5f/0x80 net/802/garp.c:413
call_timer_fn+0x161/0x670 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+0x5b7/0x1520 kernel/time/timer.c:1649
__do_softirq+0x244/0x9a0 kernel/softirq.c:288
invoke_softirq kernel/softirq.c:368 [inline]
irq_exit+0x160/0x1b0 kernel/softirq.c:409
exiting_irq arch/x86/include/asm/apic.h:648 [inline]
smp_apic_timer_interrupt+0x146/0x5e0 arch/x86/kernel/apic/apic.c:1102
apic_timer_interrupt+0x96/0xa0 arch/x86/entry/entry_64.S:792
</IRQ>
RIP: 0010:arch_local_irq_restore arch/x86/include/asm/paravirt.h:779
[inline]
RIP: 0010:lock_acquire+0x1ea/0x430 kernel/locking/lockdep.c:3997
RSP: 0000:ffff8880a64f76d0 EFLAGS: 00000282 ORIG_RAX: ffffffffffffff10
RAX: 1ffffffff0fe2d29 RBX: ffff88808966a380 RCX: 00000000eff106db
RDX: dffffc0000000000 RSI: ffff88808966ac28 RDI: 0000000000000282
RBP: ffff8880a64f7718 R08: 0000000000000000 R09: ffff88808966ac48
R10: ffff88808966ac28 R11: ffff88808966a380 R12: ffffffff87f88960
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000002
rcu_lock_acquire include/linux/rcupdate.h:242 [inline]
rcu_read_lock include/linux/rcupdate.h:629 [inline]
lock_page_memcg+0x39/0x220 mm/memcontrol.c:1669
page_remove_file_rmap mm/rmap.c:1211 [inline]
page_remove_rmap+0x19f/0x940 mm/rmap.c:1296
zap_pte_range mm/memory.c:1342 [inline]
zap_pmd_range mm/memory.c:1444 [inline]
zap_pud_range mm/memory.c:1473 [inline]
zap_p4d_range mm/memory.c:1494 [inline]
unmap_page_range+0xabd/0x19f0 mm/memory.c:1515
unmap_single_vma+0x15d/0x2c0 mm/memory.c:1560
unmap_vmas+0xac/0x170 mm/memory.c:1590
exit_mmap+0x285/0x4e0 mm/mmap.c:3062
__mmput kernel/fork.c:930 [inline]
mmput+0x114/0x440 kernel/fork.c:951
exit_mm kernel/exit.c:545 [inline]
do_exit+0x6fc/0x2c80 kernel/exit.c:841
do_group_exit+0x111/0x330 kernel/exit.c:951
get_signal+0x381/0x1cd0 kernel/signal.c:2413
do_signal+0x86/0x19a0 arch/x86/kernel/signal.c:814
exit_to_usermode_loop+0x15c/0x220 arch/x86/entry/common.c:160
prepare_exit_to_usermode+0x1b5/0x220 arch/x86/entry/common.c:199
retint_user+0x8/0x18
RIP: 0033:0x443349
RSP: 002b:00007ffc6e19c548 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff10
RAX: fffffffffffffff7 RBX: 0000000000000003 RCX: 0000000000443349
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 00000000ffffffff
RBP: 0000000000000000 R08: 00000000004aa90c R09: 00000000004aa90c
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000009
R13: 00000000004040a0 R14: 0000000000000000 R15: 0000000000000000
INFO: rcu_sched detected stalls on CPUs/tasks:
INFO: NMI handler (nmi_cpu_backtrace_handler) took too long to run: 1.352
msecs
1-...: (1 GPs behind) idle=662/140000000000002/0 softirq=12793/12799 fqs=16
(detected by 0, t=10502 jiffies, g=1103, c=1102, q=19)
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 5 Comm: kworker/u4:0 Not tainted 4.14.161-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS
Google 01/01/2011
Workqueue: writeback wb_workfn (flush-8:0)
task: ffff8880a9cd2140 task.stack: ffff8880a9cd8000
RIP: 0010:scsi_queue_rq+0x0/0x1b50 drivers/scsi/scsi_lib.c:1984
RSP: 0000:ffff8880a9cdf678 EFLAGS: 00010246
RAX: 1ffffffff0e425cc RBX: ffffffff87212e60 RCX: ffff8880a9cdf7d0
RDX: 0000000000000000 RSI: ffff8880a9cdf710 RDI: ffff8880a1a34dc0
RBP: ffff8880a9cdf758 R08: ffff8880a1a34dc0 R09: 0000000000000003
R10: 0000000000000000 R11: ffff8880a9cd2140 R12: ffff8880a1a0a800
R13: ffff8880a9cdf7d0 R14: dffffc0000000000 R15: ffff8880a1a0a808
FS: 0000000000000000(0000) GS:ffff8880aed00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fe9f7a241c4 CR3: 0000000079cab000 CR4: 00000000001406e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
blk_mq_sched_dispatch_requests+0x521/0x810 block/blk-mq-sched.c:147
__blk_mq_run_hw_queue+0x11d/0x320 block/blk-mq.c:1195
__blk_mq_delay_run_hw_queue+0x1bf/0x210 block/blk-mq.c:1243
blk_mq_run_hw_queue+0x1e/0x30 block/blk-mq.c:1264
blk_mq_sched_insert_requests+0x287/0x550 block/blk-mq-sched.c:419
blk_mq_flush_plug_list+0x6c2/0xb60 block/blk-mq.c:1536
blk_flush_plug_list+0x341/0xbd0 block/blk-core.c:3370
blk_finish_plug block/blk-core.c:3434 [inline]
blk_finish_plug+0x58/0xa2 block/blk-core.c:3430
wb_writeback+0x872/0xba0 fs/fs-writeback.c:1843
wb_check_old_data_flush fs/fs-writeback.c:1922 [inline]
wb_do_writeback fs/fs-writeback.c:1946 [inline]
wb_workfn+0x943/0xf70 fs/fs-writeback.c:1975
process_one_work+0x863/0x1600 kernel/workqueue.c:2114
worker_thread+0x5d9/0x1050 kernel/workqueue.c:2248
kthread+0x319/0x430 kernel/kthread.c:232
ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:404
Code: 89 f7 e8 64 41 c9 fd e9 07 ff ff ff 4c 89 ff e8 57 41 c9 fd 48 8b 75
c8 e9 57 ff ff ff 48 8b 7d d0 e8 a5 40 c9 fd e9 d6 fd ff ff <55> 48 89 e5
41 57 41 56 41 55 41 54 53 48 89 f3 48 83 ec 48 48
rcu_sched kthread starved for 3827 jiffies! g1103 c1102 f0x0
RCU_GP_WAIT_FQS(3) ->state=0x0 ->cpu=1
device veth1_vlan entered promiscuous mode
rcu_sched R running task 29824 9 2 0x80000000
Call Trace:
context_switch kernel/sched/core.c:2808 [inline]
__schedule+0x7b8/0x1cd0 kernel/sched/core.c:3384
schedule+0x92/0x1c0 kernel/sched/core.c:3428
schedule_timeout+0x43e/0xe10 kernel/time/timer.c:1746
rcu_gp_kthread+0xbf4/0x1ec0 kernel/rcu/tree.c:2255
kthread+0x319/0x430 kernel/kthread.c:232
ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:404
IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready
IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready
IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready
IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready
IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready
IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready
IPv6: ADDRCONF(NETDEV_UP): veth1_vlan: link is not ready
device veth0_vlan entered promiscuous mode
device veth1_vlan entered promiscuous mode
IPv6: ADDRCONF(NETDEV_UP): macvlan0: link is not ready
IPv6: ADDRCONF(NETDEV_UP): macvlan1: link is not ready
IPv6: ADDRCONF(NETDEV_UP): veth0_virt_wifi: link is not ready
IPv6: ADDRCONF(NETDEV_UP): veth1_virt_wifi: link is not ready
IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready
IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready
IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready
IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready
IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready
IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready
IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready
IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready
IPv6: ADDRCONF(NETDEV_UP): veth0_vlan: link is not ready
IPv6: ADDRCONF(NETDEV_UP): vlan0: link is not ready
IPv6: ADDRCONF(NETDEV_UP): vlan1: link is not ready
IPv6: ADDRCONF(NETDEV_UP): veth1_vlan: link is not ready
device veth0_vlan entered promiscuous mode
device veth1_vlan entered promiscuous mode
IPv6: ADDRCONF(NETDEV_UP): macvlan0: link is not ready
IPv6: ADDRCONF(NETDEV_UP): macvlan1: link is not ready
IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready
IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready
IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready
IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready
IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready
IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready
IPv6: ADDRCONF(NETDEV_UP): veth0_vlan: link is not ready
IPv6: ADDRCONF(NETDEV_UP): vlan0: link is not ready
IPv6: ADDRCONF(NETDEV_UP): vlan1: link is not ready
IPv6: ADDRCONF(NETDEV_UP): veth1_vlan: link is not ready
device veth0_vlan entered promiscuous mode
device veth1_vlan entered promiscuous mode
IPv6: ADDRCONF(NETDEV_UP): macvlan0: link is not ready
IPv6: ADDRCONF(NETDEV_UP): macvlan1: link is not ready
IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready
IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready
IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready
IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready
IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready
IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready
---
This bug is generated by a bot. It may contain errors.
See https://goo.gl/tpsmEJ for more information about syzbot.
syzbot engineers can be reached at syzk...@googlegroups.com.
syzbot will keep track of this bug report. See:
https://goo.gl/tpsmEJ#status for how to communicate with syzbot.
syzbot can test patches for this bug, for details see:
https://goo.gl/tpsmEJ#testing-patches
syzbot found the following crash on:
HEAD commit: 4c5bf01e Linux 4.14.161
git tree: linux-4.14.y
console output: https://syzkaller.appspot.com/x/log.txt?x=1142ee3ee00000
kernel config: https://syzkaller.appspot.com/x/.config?x=b10bf1ad4786130a
dashboard link: https://syzkaller.appspot.com/bug?extid=58e46c9db31b4c06a7b0
compiler: gcc (GCC) 9.0.0 20181231 (experimental)
syz repro: https://syzkaller.appspot.com/x/repro.syz?x=12fb2869e00000
C reproducer: https://syzkaller.appspot.com/x/repro.c?x=16558115e00000
IMPORTANT: if you fix the bug, please add the following tag to the commit:
Reported-by: syzbot+58e46c...@syzkaller.appspotmail.com
IPv6: ADDRCONF(NETDEV_UP): veth1_virt_wifi: link is not ready
IPv6: ADDRCONF(NETDEV_UP): veth0_vlan: link is not ready
IPv6: ADDRCONF(NETDEV_UP): vlan0: link is not ready
IPv6: ADDRCONF(NETDEV_UP): vlan1: link is not ready
INFO: rcu_preempt self-detected stall on CPU
1-...: (1 GPs behind) idle=662/140000000000002/0 softirq=12793/12799 fqs=16
(t=10501 jiffies g=1600 c=1599 q=797)
rcu_preempt kthread starved for 3826 jiffies! g1600 c1599 f0x0
RCU_GP_WAIT_FQS(3) ->state=0x0 ->cpu=0
INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu_preempt R
running task 29824 8 2 0x80000000
1-...: (1 GPs behind) idle=662/140000000000002/0 softirq=12793/12799 fqs=16
Call Trace:
context_switch kernel/sched/core.c:2808 [inline]
__schedule+0x7b8/0x1cd0 kernel/sched/core.c:3384
(detected by 0, t=10502 jiffies, g=1600, c=1599, q=798)
Sending NMI from CPU 0 to CPUs 1:
schedule+0x92/0x1c0 kernel/sched/core.c:3428
NMI backtrace for cpu 1
CPU: 1 PID: 7542 Comm: syz-executor179 Not tainted 4.14.161-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS
Google 01/01/2011
task: ffff88808966a380 task.stack: ffff8880a64f0000
RIP: 0010:__lock_acquire+0x5ed/0x4620 kernel/locking/lockdep.c:3448
RSP: 0000:ffff8880aed073a0 EFLAGS: 00000002
RAX: 000000000000000c RBX: 0000000000000001 RCX: 1ffff110112cd598
RDX: 0000000000000008 RSI: ffff88808966aca0 RDI: ffff88808966a380
RBP: ffff8880aed07548 R08: 0000000000000001 R09: ffff88808966acc0
R10: ffff88808966aca0 R11: ffff88808966a380 R12: ffffffff87f80100
R13: 0000000000000008 R14: 0000000000000004 R15: ffff88808966acc2
FS: 0000000000000000(0000) GS:ffff8880aed00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fe9f7a241c4 CR3: 0000000079cab000 CR4: 00000000001406e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
<IRQ>
lock_acquire+0x16f/0x430 kernel/locking/lockdep.c:3994
console_lock_spinning_enable kernel/printk/printk.c:1588 [inline]
console_unlock+0x3db/0xed0 kernel/printk/printk.c:2394
vprintk_emit kernel/printk/printk.c:1923 [inline]
vprintk_emit+0x1f9/0x600 kernel/printk/printk.c:1888
vprintk_default+0x28/0x30 kernel/printk/printk.c:1963
vprintk_func+0x5d/0x159 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+0x22d/0x26b arch/x86/kernel/dumpstack.c:202
show_stack+0x39/0x3b arch/x86/kernel/dumpstack.c:237
sched_show_task kernel/sched/core.c:5168 [inline]
sched_show_task.cold+0x2f0/0x351 kernel/sched/core.c:5143
rcu_check_gp_kthread_starvation+0x28e/0x2c7 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+0x435/0xd0a kernel/rcu/tree.c:2792
update_process_times+0x31/0x70 kernel/time/timer.c:1590
tick_sched_handle+0x85/0x160 kernel/time/tick-sched.c:161
tick_sched_timer+0x43/0x130 kernel/time/tick-sched.c:1219
__run_hrtimer kernel/time/hrtimer.c:1220 [inline]
__hrtimer_run_queues+0x270/0xbc0 kernel/time/hrtimer.c:1284
hrtimer_interrupt+0x1d8/0x5d0 kernel/time/hrtimer.c:1318
local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1075 [inline]
smp_apic_timer_interrupt+0x11c/0x5e0 arch/x86/kernel/apic/apic.c:1100
apic_timer_interrupt+0x96/0xa0 arch/x86/entry/entry_64.S:792
RIP: 0010:arch_local_irq_restore arch/x86/include/asm/paravirt.h:779
[inline]
RIP: 0010:__raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:160
[inline]
RIP: 0010:_raw_spin_unlock_irqrestore+0x95/0xe0
kernel/locking/spinlock.c:192
RSP: 0000:ffff8880aed07cd0 EFLAGS: 00000282 ORIG_RAX: ffffffffffffff10
RAX: 1ffffffff0fe2d29 RBX: 0000000000000282 RCX: 1ffff110112cd58e
RDX: dffffc0000000000 RSI: ffff88808966ac50 RDI: 0000000000000282
RBP: ffff8880aed07ce0 R08: ffff88808966a380 R09: ffff88808966ac70
R10: 0000000000000000 R11: 0000000000000000 R12: ffff88808a6df670
R13: 0000000000000282 R14: ffff88808a6df670 R15: 0000000000000001
spin_unlock_irqrestore include/linux/spinlock.h:372 [inline]
skb_dequeue+0x12e/0x180 net/core/skbuff.c:2818
garp_queue_xmit net/802/garp.c:261 [inline]
garp_join_timer+0x5f/0x80 net/802/garp.c:413
call_timer_fn+0x161/0x670 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+0x5b7/0x1520 kernel/time/timer.c:1649
__do_softirq+0x244/0x9a0 kernel/softirq.c:288
invoke_softirq kernel/softirq.c:368 [inline]
irq_exit+0x160/0x1b0 kernel/softirq.c:409
exiting_irq arch/x86/include/asm/apic.h:648 [inline]
smp_apic_timer_interrupt+0x146/0x5e0 arch/x86/kernel/apic/apic.c:1102
apic_timer_interrupt+0x96/0xa0 arch/x86/entry/entry_64.S:792
</IRQ>
RIP: 0010:arch_local_irq_restore arch/x86/include/asm/paravirt.h:779
[inline]
RIP: 0010:lock_acquire+0x1ea/0x430 kernel/locking/lockdep.c:3997
RSP: 0000:ffff8880a64f76d0 EFLAGS: 00000282 ORIG_RAX: ffffffffffffff10
RAX: 1ffffffff0fe2d29 RBX: ffff88808966a380 RCX: 00000000eff106db
RDX: dffffc0000000000 RSI: ffff88808966ac28 RDI: 0000000000000282
RBP: ffff8880a64f7718 R08: 0000000000000000 R09: ffff88808966ac48
R10: ffff88808966ac28 R11: ffff88808966a380 R12: ffffffff87f88960
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000002
rcu_lock_acquire include/linux/rcupdate.h:242 [inline]
rcu_read_lock include/linux/rcupdate.h:629 [inline]
lock_page_memcg+0x39/0x220 mm/memcontrol.c:1669
page_remove_file_rmap mm/rmap.c:1211 [inline]
page_remove_rmap+0x19f/0x940 mm/rmap.c:1296
zap_pte_range mm/memory.c:1342 [inline]
zap_pmd_range mm/memory.c:1444 [inline]
zap_pud_range mm/memory.c:1473 [inline]
zap_p4d_range mm/memory.c:1494 [inline]
unmap_page_range+0xabd/0x19f0 mm/memory.c:1515
unmap_single_vma+0x15d/0x2c0 mm/memory.c:1560
unmap_vmas+0xac/0x170 mm/memory.c:1590
exit_mmap+0x285/0x4e0 mm/mmap.c:3062
__mmput kernel/fork.c:930 [inline]
mmput+0x114/0x440 kernel/fork.c:951
exit_mm kernel/exit.c:545 [inline]
do_exit+0x6fc/0x2c80 kernel/exit.c:841
do_group_exit+0x111/0x330 kernel/exit.c:951
get_signal+0x381/0x1cd0 kernel/signal.c:2413
do_signal+0x86/0x19a0 arch/x86/kernel/signal.c:814
exit_to_usermode_loop+0x15c/0x220 arch/x86/entry/common.c:160
prepare_exit_to_usermode+0x1b5/0x220 arch/x86/entry/common.c:199
retint_user+0x8/0x18
RIP: 0033:0x443349
RSP: 002b:00007ffc6e19c548 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff10
RAX: fffffffffffffff7 RBX: 0000000000000003 RCX: 0000000000443349
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 00000000ffffffff
RBP: 0000000000000000 R08: 00000000004aa90c R09: 00000000004aa90c
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000009
R13: 00000000004040a0 R14: 0000000000000000 R15: 0000000000000000
Code: 0f 8e 7e 31 00 00 45 8b 8b 68 08 00 00 ba 07 00 00 00 45 85 c9 0f 85
41 06 00 00 4c 89 d6 4c 89 df ba 08 00 00 00 4c 89 54 24 70 <4c> 89 5c 24
78 e8 29 e1 ff ff 4c 8b 5c 24 78 85 c0 4c 8b 54 24
rcu_preempt kthread starved for 3827 jiffies! g1600 c1599 f0x0
RCU_GP_WAIT_FQS(3) ->state=0x0 ->cpu=0
schedule_timeout+0x43e/0xe10 kernel/time/timer.c:1746
rcu_preempt R
running task 29824 8 2 0x80000000
Call Trace:
context_switch kernel/sched/core.c:2808 [inline]
__schedule+0x7b8/0x1cd0 kernel/sched/core.c:3384
rcu_gp_kthread+0xbf4/0x1ec0 kernel/rcu/tree.c:2255
schedule+0x92/0x1c0 kernel/sched/core.c:3428
kthread+0x319/0x430 kernel/kthread.c:232
schedule_timeout+0x43e/0xe10 kernel/time/timer.c:1746
ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:404
NMI backtrace for cpu 1
CPU: 1 PID: 7542 Comm: syz-executor179 Not tainted 4.14.161-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS
Google 01/01/2011
rcu_gp_kthread+0xbf4/0x1ec0 kernel/rcu/tree.c:2255
Call Trace:
<IRQ>
kthread+0x319/0x430 kernel/kthread.c:232
__dump_stack lib/dump_stack.c:17 [inline]
dump_stack+0x142/0x197 lib/dump_stack.c:58
nmi_cpu_backtrace.cold+0x57/0x94 lib/nmi_backtrace.c:101
ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:404
nmi_trigger_cpumask_backtrace+0x141/0x189 lib/nmi_backtrace.c:62
arch_trigger_cpumask_backtrace+0x14/0x20 arch/x86/kernel/apic/hw_nmi.c:38
trigger_single_cpu_backtrace include/linux/nmi.h:158 [inline]
rcu_dump_cpu_stacks+0x186/0x1d2 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+0x43d/0xd0a kernel/rcu/tree.c:2792
update_process_times+0x31/0x70 kernel/time/timer.c:1590
tick_sched_handle+0x85/0x160 kernel/time/tick-sched.c:161
tick_sched_timer+0x43/0x130 kernel/time/tick-sched.c:1219
__run_hrtimer kernel/time/hrtimer.c:1220 [inline]
__hrtimer_run_queues+0x270/0xbc0 kernel/time/hrtimer.c:1284
hrtimer_interrupt+0x1d8/0x5d0 kernel/time/hrtimer.c:1318
local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1075 [inline]
smp_apic_timer_interrupt+0x11c/0x5e0 arch/x86/kernel/apic/apic.c:1100
apic_timer_interrupt+0x96/0xa0 arch/x86/entry/entry_64.S:792
RIP: 0010:arch_local_irq_restore arch/x86/include/asm/paravirt.h:779
[inline]
RIP: 0010:__raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:160
[inline]
RIP: 0010:_raw_spin_unlock_irqrestore+0x95/0xe0
kernel/locking/spinlock.c:192
RSP: 0000:ffff8880aed07cd0 EFLAGS: 00000282 ORIG_RAX: ffffffffffffff10
RAX: 1ffffffff0fe2d29 RBX: 0000000000000282 RCX: 1ffff110112cd58e
RDX: dffffc0000000000 RSI: ffff88808966ac50 RDI: 0000000000000282
RBP: ffff8880aed07ce0 R08: ffff88808966a380 R09: ffff88808966ac70
R10: 0000000000000000 R11: 0000000000000000 R12: ffff88808a6df670
R13: 0000000000000282 R14: ffff88808a6df670 R15: 0000000000000001
spin_unlock_irqrestore include/linux/spinlock.h:372 [inline]
skb_dequeue+0x12e/0x180 net/core/skbuff.c:2818
garp_queue_xmit net/802/garp.c:261 [inline]
garp_join_timer+0x5f/0x80 net/802/garp.c:413
call_timer_fn+0x161/0x670 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+0x5b7/0x1520 kernel/time/timer.c:1649
__do_softirq+0x244/0x9a0 kernel/softirq.c:288
invoke_softirq kernel/softirq.c:368 [inline]
irq_exit+0x160/0x1b0 kernel/softirq.c:409
exiting_irq arch/x86/include/asm/apic.h:648 [inline]
smp_apic_timer_interrupt+0x146/0x5e0 arch/x86/kernel/apic/apic.c:1102
apic_timer_interrupt+0x96/0xa0 arch/x86/entry/entry_64.S:792
</IRQ>
RIP: 0010:arch_local_irq_restore arch/x86/include/asm/paravirt.h:779
[inline]
RIP: 0010:lock_acquire+0x1ea/0x430 kernel/locking/lockdep.c:3997
RSP: 0000:ffff8880a64f76d0 EFLAGS: 00000282 ORIG_RAX: ffffffffffffff10
RAX: 1ffffffff0fe2d29 RBX: ffff88808966a380 RCX: 00000000eff106db
RDX: dffffc0000000000 RSI: ffff88808966ac28 RDI: 0000000000000282
RBP: ffff8880a64f7718 R08: 0000000000000000 R09: ffff88808966ac48
R10: ffff88808966ac28 R11: ffff88808966a380 R12: ffffffff87f88960
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000002
rcu_lock_acquire include/linux/rcupdate.h:242 [inline]
rcu_read_lock include/linux/rcupdate.h:629 [inline]
lock_page_memcg+0x39/0x220 mm/memcontrol.c:1669
page_remove_file_rmap mm/rmap.c:1211 [inline]
page_remove_rmap+0x19f/0x940 mm/rmap.c:1296
zap_pte_range mm/memory.c:1342 [inline]
zap_pmd_range mm/memory.c:1444 [inline]
zap_pud_range mm/memory.c:1473 [inline]
zap_p4d_range mm/memory.c:1494 [inline]
unmap_page_range+0xabd/0x19f0 mm/memory.c:1515
unmap_single_vma+0x15d/0x2c0 mm/memory.c:1560
unmap_vmas+0xac/0x170 mm/memory.c:1590
exit_mmap+0x285/0x4e0 mm/mmap.c:3062
__mmput kernel/fork.c:930 [inline]
mmput+0x114/0x440 kernel/fork.c:951
exit_mm kernel/exit.c:545 [inline]
do_exit+0x6fc/0x2c80 kernel/exit.c:841
do_group_exit+0x111/0x330 kernel/exit.c:951
get_signal+0x381/0x1cd0 kernel/signal.c:2413
do_signal+0x86/0x19a0 arch/x86/kernel/signal.c:814
exit_to_usermode_loop+0x15c/0x220 arch/x86/entry/common.c:160
prepare_exit_to_usermode+0x1b5/0x220 arch/x86/entry/common.c:199
retint_user+0x8/0x18
RIP: 0033:0x443349
RSP: 002b:00007ffc6e19c548 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff10
RAX: fffffffffffffff7 RBX: 0000000000000003 RCX: 0000000000443349
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 00000000ffffffff
RBP: 0000000000000000 R08: 00000000004aa90c R09: 00000000004aa90c
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000009
R13: 00000000004040a0 R14: 0000000000000000 R15: 0000000000000000
INFO: rcu_sched detected stalls on CPUs/tasks:
INFO: NMI handler (nmi_cpu_backtrace_handler) took too long to run: 1.352
msecs
1-...: (1 GPs behind) idle=662/140000000000002/0 softirq=12793/12799 fqs=16
(detected by 0, t=10502 jiffies, g=1103, c=1102, q=19)
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 5 Comm: kworker/u4:0 Not tainted 4.14.161-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS
Google 01/01/2011
Workqueue: writeback wb_workfn (flush-8:0)
task: ffff8880a9cd2140 task.stack: ffff8880a9cd8000
RIP: 0010:scsi_queue_rq+0x0/0x1b50 drivers/scsi/scsi_lib.c:1984
RSP: 0000:ffff8880a9cdf678 EFLAGS: 00010246
RAX: 1ffffffff0e425cc RBX: ffffffff87212e60 RCX: ffff8880a9cdf7d0
RDX: 0000000000000000 RSI: ffff8880a9cdf710 RDI: ffff8880a1a34dc0
RBP: ffff8880a9cdf758 R08: ffff8880a1a34dc0 R09: 0000000000000003
R10: 0000000000000000 R11: ffff8880a9cd2140 R12: ffff8880a1a0a800
R13: ffff8880a9cdf7d0 R14: dffffc0000000000 R15: ffff8880a1a0a808
FS: 0000000000000000(0000) GS:ffff8880aed00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fe9f7a241c4 CR3: 0000000079cab000 CR4: 00000000001406e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
blk_mq_sched_dispatch_requests+0x521/0x810 block/blk-mq-sched.c:147
__blk_mq_run_hw_queue+0x11d/0x320 block/blk-mq.c:1195
__blk_mq_delay_run_hw_queue+0x1bf/0x210 block/blk-mq.c:1243
blk_mq_run_hw_queue+0x1e/0x30 block/blk-mq.c:1264
blk_mq_sched_insert_requests+0x287/0x550 block/blk-mq-sched.c:419
blk_mq_flush_plug_list+0x6c2/0xb60 block/blk-mq.c:1536
blk_flush_plug_list+0x341/0xbd0 block/blk-core.c:3370
blk_finish_plug block/blk-core.c:3434 [inline]
blk_finish_plug+0x58/0xa2 block/blk-core.c:3430
wb_writeback+0x872/0xba0 fs/fs-writeback.c:1843
wb_check_old_data_flush fs/fs-writeback.c:1922 [inline]
wb_do_writeback fs/fs-writeback.c:1946 [inline]
wb_workfn+0x943/0xf70 fs/fs-writeback.c:1975
process_one_work+0x863/0x1600 kernel/workqueue.c:2114
worker_thread+0x5d9/0x1050 kernel/workqueue.c:2248
kthread+0x319/0x430 kernel/kthread.c:232
ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:404
Code: 89 f7 e8 64 41 c9 fd e9 07 ff ff ff 4c 89 ff e8 57 41 c9 fd 48 8b 75
c8 e9 57 ff ff ff 48 8b 7d d0 e8 a5 40 c9 fd e9 d6 fd ff ff <55> 48 89 e5
41 57 41 56 41 55 41 54 53 48 89 f3 48 83 ec 48 48
rcu_sched kthread starved for 3827 jiffies! g1103 c1102 f0x0
RCU_GP_WAIT_FQS(3) ->state=0x0 ->cpu=1
device veth1_vlan entered promiscuous mode
rcu_sched R running task 29824 9 2 0x80000000
Call Trace:
context_switch kernel/sched/core.c:2808 [inline]
__schedule+0x7b8/0x1cd0 kernel/sched/core.c:3384
schedule+0x92/0x1c0 kernel/sched/core.c:3428
schedule_timeout+0x43e/0xe10 kernel/time/timer.c:1746
rcu_gp_kthread+0xbf4/0x1ec0 kernel/rcu/tree.c:2255
kthread+0x319/0x430 kernel/kthread.c:232
ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:404
IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready
IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready
IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready
IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready
IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready
IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready
IPv6: ADDRCONF(NETDEV_UP): veth1_vlan: link is not ready
device veth0_vlan entered promiscuous mode
device veth1_vlan entered promiscuous mode
IPv6: ADDRCONF(NETDEV_UP): macvlan0: link is not ready
IPv6: ADDRCONF(NETDEV_UP): macvlan1: link is not ready
IPv6: ADDRCONF(NETDEV_UP): veth0_virt_wifi: link is not ready
IPv6: ADDRCONF(NETDEV_UP): veth1_virt_wifi: link is not ready
IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready
IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready
IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready
IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready
IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready
IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready
IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready
IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready
IPv6: ADDRCONF(NETDEV_UP): veth0_vlan: link is not ready
IPv6: ADDRCONF(NETDEV_UP): vlan0: link is not ready
IPv6: ADDRCONF(NETDEV_UP): vlan1: link is not ready
IPv6: ADDRCONF(NETDEV_UP): veth1_vlan: link is not ready
device veth0_vlan entered promiscuous mode
device veth1_vlan entered promiscuous mode
IPv6: ADDRCONF(NETDEV_UP): macvlan0: link is not ready
IPv6: ADDRCONF(NETDEV_UP): macvlan1: link is not ready
IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready
IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready
IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready
IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready
IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready
IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready
IPv6: ADDRCONF(NETDEV_UP): veth0_vlan: link is not ready
IPv6: ADDRCONF(NETDEV_UP): vlan0: link is not ready
IPv6: ADDRCONF(NETDEV_UP): vlan1: link is not ready
IPv6: ADDRCONF(NETDEV_UP): veth1_vlan: link is not ready
device veth0_vlan entered promiscuous mode
device veth1_vlan entered promiscuous mode
IPv6: ADDRCONF(NETDEV_UP): macvlan0: link is not ready
IPv6: ADDRCONF(NETDEV_UP): macvlan1: link is not ready
IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready
IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready
IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready
IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready
IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready
IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready
---
This bug is generated by a bot. It may contain errors.
See https://goo.gl/tpsmEJ for more information about syzbot.
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syzbot can test patches for this bug, for details see:
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