bond0: Enslaving veth1003 as an active interface with an up link IPv6: ADDRCONF(NETDEV_UP): vlan596: link is not ready bond0: Enslaving veth1365 as an active interface with an up link netlink: 20 bytes leftover after parsing attributes in process `syz-executor.4'. rcu: INFO: rcu_preempt self-detected stall on CPU rcu: 0-....: (10499 ticks this GP) idle=83a/1/0x4000000000000004 softirq=95534/95534 fqs=3004 rcu: (t=10501 jiffies g=138241 q=519) rcu: rcu_preempt kthread starved for 4486 jiffies! g138241 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x0 ->cpu=1 rcu: RCU grace-period kthread stack dump: rcu_preempt R running task 29424 10 2 0x80000000 Call Trace: context_switch kernel/sched/core.c:2826 [inline] __schedule+0x866/0x1dc0 kernel/sched/core.c:3515 schedule+0x92/0x1c0 kernel/sched/core.c:3559 schedule_timeout+0x4db/0xfc0 kernel/time/timer.c:1806 rcu_gp_kthread+0xd5c/0x2190 kernel/rcu/tree.c:2202 kthread+0x354/0x420 kernel/kthread.c:246 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:415 NMI backtrace for cpu 0 CPU: 0 PID: 7124 Comm: syz-executor.5 Not tainted 4.19.97-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x197/0x210 lib/dump_stack.c:118 nmi_cpu_backtrace.cold+0x63/0xa4 lib/nmi_backtrace.c:101 nmi_trigger_cpumask_backtrace+0x1b0/0x1f8 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:164 [inline] rcu_dump_cpu_stacks+0x189/0x1d5 kernel/rcu/tree.c:1340 print_cpu_stall kernel/rcu/tree.c:1478 [inline] check_cpu_stall kernel/rcu/tree.c:1550 [inline] __rcu_pending kernel/rcu/tree.c:3293 [inline] rcu_pending kernel/rcu/tree.c:3336 [inline] rcu_check_callbacks.cold+0x5e3/0xd90 kernel/rcu/tree.c:2682 update_process_times+0x32/0x80 kernel/time/timer.c:1638 tick_sched_handle+0xa2/0x190 kernel/time/tick-sched.c:164 tick_sched_timer+0x47/0x130 kernel/time/tick-sched.c:1274 __run_hrtimer kernel/time/hrtimer.c:1401 [inline] __hrtimer_run_queues+0x33b/0xdc0 kernel/time/hrtimer.c:1463 hrtimer_interrupt+0x314/0x770 kernel/time/hrtimer.c:1521 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1067 [inline] smp_apic_timer_interrupt+0x111/0x550 arch/x86/kernel/apic/apic.c:1092 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:893 RIP: 0010:__raw_spin_unlock_irq include/linux/spinlock_api_smp.h:169 [inline] RIP: 0010:_raw_spin_unlock_irq+0x54/0x90 kernel/locking/spinlock.c:192 Code: c0 d8 5b f2 88 48 ba 00 00 00 00 00 fc ff df 48 c1 e8 03 80 3c 10 00 75 33 48 83 3d bd 5e 9c 01 00 74 20 fb 66 0f 1f 44 00 00 01 00 00 00 e8 52 e3 f2 f9 65 8b 05 9b f0 ab 78 85 c0 74 06 41 RSP: 0018:ffff8880ae807dd0 EFLAGS: 00000286 ORIG_RAX: ffffffffffffff13 RAX: 1ffffffff11e4b7b RBX: ffff88804efadc90 RCX: 1ffff110060c7d8b RDX: dffffc0000000000 RSI: ffff88803063ec38 RDI: ffff88803063ebbc RBP: ffff8880ae807dd8 R08: ffff88803063e340 R09: ffff88803063ec58 R10: 0000000000000000 R11: 0000000000000000 R12: ffff8880ae823a00 R13: dffffc0000000000 R14: ffffffff85da30b0 R15: ffff8880ae823a00 expire_timers kernel/time/timer.c:1362 [inline] __run_timers kernel/time/timer.c:1684 [inline] __run_timers kernel/time/timer.c:1652 [inline] run_timer_softirq+0x644/0x16a0 kernel/time/timer.c:1697 __do_softirq+0x25c/0x921 kernel/softirq.c:292 invoke_softirq kernel/softirq.c:372 [inline] irq_exit+0x180/0x1d0 kernel/softirq.c:412 exiting_irq arch/x86/include/asm/apic.h:536 [inline] smp_apic_timer_interrupt+0x13b/0x550 arch/x86/kernel/apic/apic.c:1094 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:893 RIP: 0010:lru_add_drain_cpu+0x112/0x520 mm/swap.c:590 Code: 00 00 fc ff df 4d 01 ec 4c 89 e2 48 c1 ea 03 0f b6 04 02 4c 89 e2 83 e2 07 38 d0 7f 08 84 c0 0f 85 49 03 00 00 45 0f b6 3c 24 <31> ff 44 89 fe e8 54 e1 df ff 45 84 ff 0f 85 38 02 00 00 e8 06 e0 RSP: 0018:ffff88801ca8f3e0 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff13 RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffc900108f3000 RDX: 0000000000000000 RSI: ffffffff818b356c RDI: 0000000000000001 RBP: ffff88801ca8f408 R08: ffff88803063e340 R09: 0000000000000004 R10: ffffed1015d04732 R11: ffff8880ae823993 R12: ffff8880ae828aa0 R13: ffff8880ae800000 R14: ffffffff88beff00 R15: 0000000000000000 lru_add_drain+0x20/0x60 mm/swap.c:648 __pagevec_release+0xbf/0x120 mm/swap.c:817 pagevec_release include/linux/pagevec.h:86 [inline] mpage_prepare_extent_to_map+0xebb/0x1110 fs/ext4/inode.c:2705 ext4_writepages+0x166a/0x3450 fs/ext4/inode.c:2871 do_writepages+0xf3/0x2a0 mm/page-writeback.c:2344 __filemap_fdatawrite_range+0x28d/0x370 mm/filemap.c:446 filemap_write_and_wait_range mm/filemap.c:679 [inline] filemap_write_and_wait_range+0x4b/0xd0 mm/filemap.c:673 generic_file_direct_write+0x39d/0x4b0 mm/filemap.c:3041 __generic_file_write_iter+0x2ee/0x630 mm/filemap.c:3244 ext4_file_write_iter+0x32b/0x1060 fs/ext4/file.c:270 call_write_iter include/linux/fs.h:1820 [inline] new_sync_write fs/read_write.c:474 [inline] __vfs_write+0x587/0x810 fs/read_write.c:487 vfs_write+0x20c/0x560 fs/read_write.c:549 ksys_write+0x14f/0x2d0 fs/read_write.c:599 __do_sys_write fs/read_write.c:611 [inline] __se_sys_write fs/read_write.c:608 [inline] __x64_sys_write+0x73/0xb0 fs/read_write.c:608 do_syscall_64+0xfd/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x45aff9 Code: ad b6 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 7b b6 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007f7a930d8c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 00007f7a930d96d4 RCX: 000000000045aff9 RDX: 00000000175d900f RSI: 0000000020000200 RDI: 0000000000000004 RBP: 000000000075bf20 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff R13: 0000000000000c68 R14: 00000000004cd148 R15: 000000000075bf2c