FILE: fs/pnode.c

BUG: soft lockup - CPU#1 stuck for 22s! [syz-executor2:7067]
hardirqs last  enabled at (210421): [<ffffffff82c51728>] restore_regs_and_iret+0x0/0x1d
hardirqs last disabled at (210422): [<ffffffff8100fb22>] apic_timer_interrupt+0x82/0x90 arch/x86/entry/entry_64.S:710
softirqs last  enabled at (210420): [<ffffffff810114a3>] __do_softirq+0x613/0x8c4 kernel/softirq.c:344
softirqs last disabled at (210415): [<ffffffff812c1650>] invoke_softirq kernel/softirq.c:395 [inline]
softirqs last disabled at (210415): [<ffffffff812c1650>] irq_exit+0x170/0x1a0 kernel/softirq.c:436
RIP: 0010:[<ffffffff8181134a>]  [<ffffffff8181134a>] next_group+0x5a/0x2e0 fs/pnode.c:172