team0: Port device team_slave_1 added IPv6: ADDRCONF(NETDEV_UP): bridge_slave_0: link is not ready IPv6: ADDRCONF(NETDEV_UP): bridge_slave_1: link is not ready device hsr_slave_0 entered promiscuous mode INFO: rcu_sched detected stalls on CPUs/tasks: (detected by 0, t=10502 jiffies, g=346, c=345, q=1) All QSes seen, last rcu_sched kthread activity 10499 (4294952469-4294941970), jiffies_till_next_fqs=1, root ->qsmask 0x0 syz-executor.5 R running task 27000 7007 6103 0x00000000 Call Trace: sched_show_task.cold.89+0x2e1/0x342 kernel/sched/core.c:5168 print_other_cpu_stall kernel/rcu/tree.c:1501 [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.77+0xc96/0xcfa kernel/rcu/tree.c:2792 update_process_times+0x2a/0x60 kernel/time/timer.c:1590 INFO: rcu_preempt detected stalls on CPUs/tasks: tick_sched_handle+0x7b/0x140 kernel/time/tick-sched.c:165 tick_sched_timer+0x34/0xf0 kernel/time/tick-sched.c:1223 (detected by 1, t=10502 jiffies, g=1256, c=1255, q=327) __run_hrtimer kernel/time/hrtimer.c:1223 [inline] __hrtimer_run_queues+0x297/0xaf0 kernel/time/hrtimer.c:1287 All QSes seen, last rcu_preempt kthread activity 10502 (4294952473-4294941971), jiffies_till_next_fqs=1, root ->qsmask 0x0 syz-executor.0 R running task 27000 6993 6105 0x00000000 hrtimer_interrupt+0x1ae/0x600 kernel/time/hrtimer.c:1321 Call Trace: local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1075 [inline] smp_apic_timer_interrupt+0x11f/0x5d0 arch/x86/kernel/apic/apic.c:1100 sched_show_task.cold.89+0x2e1/0x342 kernel/sched/core.c:5168 apic_timer_interrupt+0x96/0xa0 arch/x86/entry/entry_64.S:792 print_other_cpu_stall kernel/rcu/tree.c:1501 [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.77+0xc96/0xcfa kernel/rcu/tree.c:2792 update_process_times+0x2a/0x60 kernel/time/timer.c:1590 RIP: 0010:arch_local_irq_restore arch/x86/include/asm/paravirt.h:779 [inline] RIP: 0010:kfree+0x117/0x270 mm/slab.c:3816 tick_sched_handle+0x7b/0x140 kernel/time/tick-sched.c:165 RSP: 0018:ffff88808fc97950 EFLAGS: 00000282 ORIG_RAX: ffffffffffffff10 tick_sched_timer+0x34/0xf0 kernel/time/tick-sched.c:1223 RAX: 0000000000000007 RBX: ffff88808b1e1cc0 RCX: 1ffff1101207c96d RDX: 0000000000000000 RSI: ffff8880903e4b48 RDI: 0000000000000282 RBP: ffff88808fc97970 R08: ffff8880903e4b68 R09: 0000000000000000 __run_hrtimer kernel/time/hrtimer.c:1223 [inline] __hrtimer_run_queues+0x297/0xaf0 kernel/time/hrtimer.c:1287 R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000282 R13: ffff8880aa8007c0 R14: ffffffff81954c8a R15: 0000000000000000 iter_file_splice_write+0x49a/0xc20 fs/splice.c:776 hrtimer_interrupt+0x1ae/0x600 kernel/time/hrtimer.c:1321 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1075 [inline] smp_apic_timer_interrupt+0x11f/0x5d0 arch/x86/kernel/apic/apic.c:1100 do_splice_from fs/splice.c:851 [inline] direct_splice_actor+0x104/0x1c0 fs/splice.c:1018 apic_timer_interrupt+0x96/0xa0 arch/x86/entry/entry_64.S:792 splice_direct_to_actor+0x27c/0x750 fs/splice.c:973 RIP: 0010:arch_local_irq_restore arch/x86/include/asm/paravirt.h:779 [inline] RIP: 0010:lock_is_held_type+0x18b/0x210 kernel/locking/lockdep.c:4038 RSP: 0018:ffff88809317f080 EFLAGS: 00000282 ORIG_RAX: ffffffffffffff10 RAX: dffffc0000000000 RBX: 0000000000000282 RCX: 0000000000000000 do_splice_direct+0x144/0x250 fs/splice.c:1061 RDX: 1ffffffff0f22d31 RSI: ffffffff87990fa0 RDI: 0000000000000282 RBP: ffff88809317f0a0 R08: ffff888091496f10 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: ffff888091496640 R13: 0000000000000000 R14: 0000000000000565 R15: ffff88807d538b28 do_sendfile+0x463/0xd00 fs/read_write.c:1441 lock_is_held include/linux/lockdep.h:437 [inline] ___might_sleep+0x1fe/0x2a0 kernel/sched/core.c:6006 __might_sleep+0x93/0xb0 kernel/sched/core.c:5994 __getblk_gfp+0x3a/0x5f0 fs/buffer.c:1381 SYSC_sendfile64 fs/read_write.c:1496 [inline] SyS_sendfile64+0x97/0x110 fs/read_write.c:1488 sb_getblk include/linux/buffer_head.h:333 [inline] __ext4_get_inode_loc+0x32b/0xe30 fs/ext4/inode.c:4515 ext4_get_inode_loc fs/ext4/inode.c:4628 [inline] ext4_reserve_inode_write+0xd7/0x220 fs/ext4/inode.c:5788 ext4_mark_inode_dirty+0x12b/0x7b0 fs/ext4/inode.c:5955 do_syscall_64+0x1c7/0x5b0 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x42/0xb7 RIP: 0033:0x459519 ext4_dirty_inode+0x63/0x90 fs/ext4/inode.c:5994 RSP: 002b:00007f2158ab6c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000028 __mark_inode_dirty+0x542/0xe80 fs/fs-writeback.c:2144 RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 0000000000459519 RDX: 0000000020000000 RSI: 0000000000000003 RDI: 0000000000000003 RBP: 000000000075bf20 R08: 0000000000000000 R09: 0000000000000000 mark_inode_dirty include/linux/fs.h:2020 [inline] generic_write_end+0x162/0x220 fs/buffer.c:2229 R10: 00008080fffffffe R11: 0000000000000246 R12: 00007f2158ab76d4 R13: 00000000004c6af0 R14: 00000000004dbd68 R15: 00000000ffffffff ext4_da_write_end+0x2d6/0xa20 fs/ext4/inode.c:3200 rcu_sched kthread starved for 10503 jiffies! g346 c345 f0x2 RCU_GP_WAIT_FQS(3) ->state=0x0 ->cpu=0 rcu_sched R generic_perform_write+0x318/0x450 mm/filemap.c:3058 running task 29832 9 2 0x80000000 Call Trace: context_switch kernel/sched/core.c:2808 [inline] __schedule+0x780/0x1d20 kernel/sched/core.c:3384 schedule+0x7f/0x1b0 kernel/sched/core.c:3428 __generic_file_write_iter+0x201/0x580 mm/filemap.c:3172 schedule_timeout+0x40c/0xcc0 kernel/time/timer.c:1746 ext4_file_write_iter+0x27a/0xe40 fs/ext4/file.c:270 rcu_gp_kthread+0xbbf/0x1e00 kernel/rcu/tree.c:2255 call_write_iter include/linux/fs.h:1778 [inline] do_iter_readv_writev+0x460/0x900 fs/read_write.c:675 kthread+0x338/0x400 kernel/kthread.c:232 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:404 do_iter_write+0x12b/0x520 fs/read_write.c:954 vfs_iter_write+0x5b/0xb0 fs/read_write.c:967 iter_file_splice_write+0x540/0xc20 fs/splice.c:749 do_splice_from fs/splice.c:851 [inline] direct_splice_actor+0x104/0x1c0 fs/splice.c:1018 splice_direct_to_actor+0x27c/0x750 fs/splice.c:973 do_splice_direct+0x144/0x250 fs/splice.c:1061 do_sendfile+0x463/0xd00 fs/read_write.c:1441 SYSC_sendfile64 fs/read_write.c:1496 [inline] SyS_sendfile64+0x97/0x110 fs/read_write.c:1488 do_syscall_64+0x1c7/0x5b0 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x42/0xb7 RIP: 0033:0x459519 RSP: 002b:00007fd2a94e6c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000028 RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 0000000000459519 RDX: 0000000020000000 RSI: 0000000000000003 RDI: 0000000000000003 RBP: 000000000075bf20 R08: 0000000000000000 R09: 0000000000000000 R10: 00008080fffffffe R11: 0000000000000246 R12: 00007fd2a94e76d4 R13: 00000000004c6af0 R14: 00000000004dbd68 R15: 00000000ffffffff rcu_preempt kthread starved for 10502 jiffies! g1256 c1255 f0x2 RCU_GP_WAIT_FQS(3) ->state=0x0 ->cpu=0 rcu_preempt R running task 29720 8 2 0x80000000 Call Trace: context_switch kernel/sched/core.c:2808 [inline] __schedule+0x780/0x1d20 kernel/sched/core.c:3384 schedule+0x7f/0x1b0 kernel/sched/core.c:3428 schedule_timeout+0x40c/0xcc0 kernel/time/timer.c:1746 rcu_gp_kthread+0xbbf/0x1e00 kernel/rcu/tree.c:2255 kthread+0x338/0x400 kernel/kthread.c:232 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:404