------------[ cut here ]------------
WARNING: CPU: 0 PID: 42 at kernel/rcu/tree_stall.h:984 rcu_check_gp_start_stall.part.0+0x1c3/0x4a0 kernel/rcu/tree_stall.h:976
Modules linked in:
CPU: 0 PID: 42 Comm: kcompactd0 Not tainted 6.6.0-rc5-syzkaller-00243-g727fb8376504 #0
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
RIP: 0010:rcu_check_gp_start_stall.part.0+0x1c3/0x4a0 kernel/rcu/tree_stall.h:984
Code: 0f 88 55 01 00 00 be 04 00 00 00 48 c7 c7 c0 ea 2d 92 e8 90 96 6c 00 b8 01 00 00 00 87 05 75 fb bc 10 85 c0 0f 85 31 01 00 00 <0f> 0b 48 81 fd 00 64 bb 8c 48 c7 c3 98 5e ce 8e 74 58 48 b8 00 00
RSP: 0018:ffffc90000007df0 EFLAGS: 00010046
RAX: 0000000000000000 RBX: 0000000000002904 RCX: ffffffff8170ef40
RDX: fffffbfff245bd58 RSI: 0000000000000004 RDI: ffffffff922deac0
RBP: ffffffff8cbb6400 R08: 0000000000000001 R09: fffffbfff245bd58
R10: 0000000000000003 R11: 0000000000000000 R12: 1ffffffff1901e40
R13: 0000000000000246 R14: ffff888015f74800 R15: ffff88802c63d612
FS: 0000000000000000(0000) GS:ffff88802c600000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055b950cb4238 CR3: 000000000c976000 CR4: 0000000000350ef0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
rcu_check_gp_start_stall kernel/rcu/tree_stall.h:947 [inline]
rcu_core+0x4e5/0x1bb0 kernel/rcu/tree.c:2398
__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:1074
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:645
RIP: 0010:csd_lock_wait kernel/smp.c:300 [inline]
RIP: 0010:smp_call_function_many_cond+0x4e0/0x1570 kernel/smp.c:844
Code: 00 00 00 fc ff df 4d 89 fc 4c 89 fd 49 c1 ec 03 83 e5 07 49 01 c4 83 c5 03 e8 3c 8b 0b 00 f3 90 41 0f b6 04 24 40 38 c5 7c 08 <84> c0 0f 85 3c 0e 00 00 8b 43 08 31 ff 83 e0 01 41 89 c5 89 c6 e8
RSP: 0018:ffffc9000068f3f8 EFLAGS: 00000206
RAX: 0000000000000000 RBX: ffff88802c841a60 RCX: 0000000000000000
RDX: ffff888015f74800 RSI: ffffffff817c3ba4 RDI: 0000000000000005
RBP: 0000000000000003 R08: 0000000000000005 R09: 0000000000000000
R10: 0000000000000001 R11: 0000000000000000 R12: ffffed100590834d
R13: 0000000000000001 R14: ffff88802c63d8c0 R15: ffff88802c841a68
on_each_cpu_cond_mask+0x40/0x90 kernel/smp.c:1012
__buffer_migrate_folio+0x318/0x950 mm/migrate.c:765
move_to_new_folio+0x183/0x690 mm/migrate.c:967
migrate_folio_move mm/migrate.c:1274 [inline]
migrate_pages_batch+0x1b62/0x2c90 mm/migrate.c:1759
migrate_pages_sync mm/migrate.c:1825 [inline]
migrate_pages+0x1b2d/0x27c0 mm/migrate.c:1929
compact_zone+0x1dd2/0x4020 mm/compaction.c:2515
proactive_compact_node+0x118/0x1d0 mm/compaction.c:2780
kcompactd+0x710/0xd80 mm/compaction.c:3100
kthread+0x33c/0x440 kernel/kthread.c:388
ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:304
----------------
Code disassembly (best guess), 5 bytes skipped:
0: df 4d 89 fisttps -0x77(%rbp)
3: fc cld
4: 4c 89 fd mov %r15,%rbp
7: 49 c1 ec 03 shr $0x3,%r12
b: 83 e5 07 and $0x7,%ebp
e: 49 01 c4 add %rax,%r12
11: 83 c5 03 add $0x3,%ebp
14: e8 3c 8b 0b 00 call 0xb8b55
19: f3 90 pause
1b: 41 0f b6 04 24 movzbl (%r12),%eax
20: 40 38 c5 cmp %al,%bpl
23: 7c 08 jl 0x2d
* 25: 84 c0 test %al,%al <-- trapping instruction
27: 0f 85 3c 0e 00 00 jne 0xe69
2d: 8b 43 08 mov 0x8(%rbx),%eax
30: 31 ff xor %edi,%edi
32: 83 e0 01 and $0x1,%eax
35: 41 89 c5 mov %eax,%r13d
38: 89 c6 mov %eax,%esi
3a: e8 .byte 0xe8