rcu: INFO: rcu_preempt detected expedited stalls on CPUs/tasks: { 0-.... } 2637 jiffies s: 49457 root: 0x1/.
rcu: blocking rcu_node structures (internal RCU debug):
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 5073 Comm: syz-executor.3 Not tainted 6.5.0-rc4-syzkaller-01264-gb9b05381e5d7 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/26/2023
RIP: 0010:div_u64_rem include/linux/math64.h:29 [inline]
RIP: 0010:div_u64 include/linux/math64.h:130 [inline]
RIP: 0010:pie_calculate_probability+0x284/0x850 net/sched/sch_pie.c:345
Code: 89 c5 48 89 6c 24 38 e8 aa 0e 2c f9 47 8d 24 a4 31 d2 4c 89 ff 43 8d 0c 24 49 c1 ee 02 48 b8 ff ff ff ff ff ff ff 00 48 f7 f1 <48> 89 c5 48 89 c6 48 c1 eb 02 49 89 cc e8 8a 09 2c f9 49 39 ef 73
RSP: 0018:ffffc90000007bc0 EFLAGS: 00000207
RAX: 00000001ad7f29ab RBX: 0000000000abcc77 RCX: 0000000000989680
RDX: 000000000078f87f RSI: ffffffff885a1166 RDI: 0000000000000000
RBP: 00000010c6f7a0b5 R08: 0000000000000005 R09: 00000000000f4240
R10: 00000000000f4240 R11: 00000000675317e3 R12: 00000000004c4b40
R13: 0000000000000001 R14: 0000000000044b82 R15: 0000000000000000
FS:  000055555610f480(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fcb1b7e7f00 CR3: 000000004875e000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <NMI>
 </NMI>
 <IRQ>
 fq_pie_timer+0x1da/0x4f0 net/sched/sch_fq_pie.c:387
 call_timer_fn+0x1a0/0x580 kernel/time/timer.c:1700
 expire_timers kernel/time/timer.c:1751 [inline]
 __run_timers+0x764/0xb10 kernel/time/timer.c:2022
 run_timer_softirq+0x58/0xd0 kernel/time/timer.c:2035
 __do_softirq+0x218/0x965 kernel/softirq.c:553
 invoke_softirq kernel/softirq.c:427 [inline]
 __irq_exit_rcu kernel/softirq.c:632 [inline]
 irq_exit_rcu+0xb7/0x120 kernel/softirq.c:644
 sysvec_apic_timer_interrupt+0x93/0xc0 arch/x86/kernel/apic/apic.c:1109
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:645
RIP: 0010:__orc_find+0x8e/0xf0 arch/x86/kernel/unwind_orc.c:106
Code: 00 48 89 da 48 c1 ea 03 0f b6 34 0a 48 89 da 83 e2 07 83 c2 03 40 38 f2 7c 05 40 84 f6 75 43 48 63 13 48 01 da 49 39 d5 73 af <4c> 8d 63 fc 49 39 ec 73 b2 4d 29 f7 49 c1 ff 02 4b 8d 14 7f 48 8d
RSP: 0018:ffffc90003e9f2f8 EFLAGS: 00000287
RAX: ffffffff8f3733ee RBX: ffffffff8ebe1c28 RCX: dffffc0000000000
RDX: ffffffff8173f740 RSI: 0000000000000000 RDI: ffffffff8ebe1c14
RBP: ffffffff8ebe1c14 R08: ffffffff8f37347e R09: ffffffff8f319d3a
R10: ffffc90003e9f3a8 R11: 00000000000073f7 R12: ffffffff8ebe1c3c
R13: ffffffff8173f705 R14: ffffffff8ebe1c14 R15: ffffffff8ebe1c14
 orc_find arch/x86/kernel/unwind_orc.c:227 [inline]
 unwind_next_frame+0x2b4/0x2020 arch/x86/kernel/unwind_orc.c:494
 arch_stack_walk+0x8b/0xf0 arch/x86/kernel/stacktrace.c:25
 stack_trace_save+0x96/0xd0 kernel/stacktrace.c:122
 kasan_save_stack+0x33/0x50 mm/kasan/common.c:45
 kasan_set_track+0x25/0x30 mm/kasan/common.c:52
 kasan_save_free_info+0x2b/0x40 mm/kasan/generic.c:522
 ____kasan_slab_free mm/kasan/common.c:236 [inline]
 ____kasan_slab_free+0x15e/0x1b0 mm/kasan/common.c:200
 kasan_slab_free include/linux/kasan.h:162 [inline]
 slab_free_hook mm/slub.c:1792 [inline]
 slab_free_freelist_hook+0x10b/0x1e0 mm/slub.c:1818
 slab_free mm/slub.c:3801 [inline]
 kmem_cache_free+0xf0/0x490 mm/slub.c:3823
 free_buffer_head+0x4e/0xf0 fs/buffer.c:3053
 try_to_free_buffers+0x1c6/0x2d0 fs/buffer.c:2994
 jbd2_journal_try_to_free_buffers+0x1fa/0x270 fs/jbd2/transaction.c:2172
 ext4_release_folio+0x19a/0x360 fs/ext4/inode.c:3153
 filemap_release_folio+0x143/0x1b0 mm/filemap.c:4079
 block_invalidate_folio+0x4fc/0x5f0 fs/buffer.c:1653
 folio_invalidate mm/truncate.c:159 [inline]
 truncate_cleanup_folio+0x2b0/0x3e0 mm/truncate.c:179
 truncate_inode_pages_range+0x27b/0xfb0 mm/truncate.c:368
 ext4_evict_inode+0x2c5/0x1a30 fs/ext4/inode.c:193
 evict+0x2ed/0x6b0 fs/inode.c:665
 iput_final fs/inode.c:1791 [inline]
 iput.part.0+0x55e/0x7a0 fs/inode.c:1817
 iput+0x5c/0x80 fs/inode.c:1807
 do_unlinkat+0x429/0x6d0 fs/namei.c:4402
 __do_sys_unlink fs/namei.c:4443 [inline]
 __se_sys_unlink fs/namei.c:4441 [inline]
 __x64_sys_unlink+0xc8/0x110 fs/namei.c:4441
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x38/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7fdc6067c297
Code: 73 01 c3 48 c7 c1 b0 ff ff ff f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 b8 57 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b0 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ffd708d3258 EFLAGS: 00000206 ORIG_RAX: 0000000000000057
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fdc6067c297
RDX: 00007ffd708d3280 RSI: 00007ffd708d3310 RDI: 00007ffd708d3310
RBP: 00007ffd708d3310 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000100 R11: 0000000000000206 R12: 00007ffd708d43d0
R13: 00007fdc606c73b9 R14: 000000000024a8c4 R15: 000000000000000e
 </TASK>