handle_pte_fault mm/memory.c:6558 [inline]
 __handle_mm_fault mm/memory.c:6707 [inline]
 handle_mm_fault+0xf64/0x28c0 mm/memory.c:6876
 faultin_page mm/gup.c:1126 [inline]
 __get_user_pages+0x1671/0x2650 mm/gup.c:1428
 __get_user_pages_locked mm/gup.c:1692 [inline]
 faultin_page_range+0x26a/0x8f0 mm/gup.c:1912
 madvise_populate mm/madvise.c:977 [inline]
 madvise_do_behavior+0x2e4/0x540 mm/madvise.c:1914
page last free pid 19 tgid 19 ts 437601533416 stack trace:
 reset_page_owner include/linux/page_owner.h:26 [inline]
 __free_pages_prepare mm/page_alloc.c:1418 [inline]
 __free_frozen_pages+0xf8e/0x1070 mm/page_alloc.c:2962
 __tlb_remove_table_free mm/mmu_gather.c:228 [inline]
 tlb_remove_table_rcu+0x85/0x100 mm/mmu_gather.c:291
 rcu_do_batch kernel/rcu/tree.c:2650 [inline]
 rcu_core kernel/rcu/tree.c:2919 [inline]
 rcu_cpu_kthread+0xb2f/0x1700 kernel/rcu/tree.c:3007
 smpboot_thread_fn+0x5f8/0xb30 kernel/smpboot.c:162
 kthread+0x38b/0x470 kernel/kthread.c:436
 ret_from_fork+0x514/0xb70 arch/x86/kernel/process.c:158
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
------------[ cut here ]------------
kernel BUG at mm/filemap.c:155!
Oops: invalid opcode: 0000 [#1] SMP KASAN PTI
CPU: 0 UID: 0 PID: 9909 Comm: syz.1.1233 Tainted: G             L       syzkaller #0 PREEMPT_{RT,(full)} 
Tainted: [L]=SOFTLOCKUP
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/07/2026
RIP: 0010:filemap_unaccount_folio+0x506/0x550 mm/filemap.c:155
Code: b4 be ff 48 89 df 48 c7 c6 00 4c 99 8b e8 12 d7 1f ff 90 0f 0b e8 7a b4 be ff 48 89 df 48 c7 c6 c0 49 99 8b e8 fb d6 1f ff 90 <0f> 0b e8 63 b4 be ff 48 89 df 48 c7 c6 00 4c 99 8b e8 e4 d6 1f ff
RSP: 0018:ffffc90004c26dc0 EFLAGS: 00010246
RAX: a120cf27f1bc8200 RBX: ffffea000099d3c0 RCX: 0000000000000046
RDX: ffffc90010a74000 RSI: ffffffff8dd3962a RDI: ffff88802c455dc0
RBP: 0000000000000001 R08: 0000000000000000 R09: 0000000000000000
R10: dffffc0000000000 R11: ffffed1017084963 R12: ffffea000099d3f0
R13: ffff888079c70900 R14: 1ffffd4000133a78 R15: 1ffffd4000133a79
FS:  00007f583a4856c0(0000) GS:ffff8881247a5000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00002000000000c0 CR3: 0000000042d4a000 CR4: 00000000003526f0
Call Trace:
 <TASK>
 __filemap_remove_folio+0xc4/0x530 mm/filemap.c:226
 filemap_remove_folio+0xf1/0x3a0 mm/filemap.c:257
 truncate_inode_folio mm/truncate.c:176 [inline]
 truncate_inode_pages_range+0xacb/0xd70 mm/truncate.c:461
 kvm_gmem_punch_hole virt/kvm/guest_memfd.c:210 [inline]
 kvm_gmem_fallocate+0x664/0x8a0 virt/kvm/guest_memfd.c:281
 vfs_fallocate+0x663/0x7f0 fs/open.c:338
 madvise_remove mm/madvise.c:1047 [inline]
 madvise_vma_behavior+0x2a73/0x4150 mm/madvise.c:1360
 madvise_walk_vmas+0x576/0xb00 mm/madvise.c:1721
 madvise_do_behavior+0x385/0x540 mm/madvise.c:1916
 do_madvise+0x26f/0x330 mm/madvise.c:2014
 __do_sys_madvise mm/madvise.c:2023 [inline]
 __se_sys_madvise mm/madvise.c:2021 [inline]
 __x64_sys_madvise+0xa6/0xc0 mm/madvise.c:2021
 do_syscall_x64 arch/x86/entry/syscall_64.c:61 [inline]
 do_syscall_64+0x166/0x520 arch/x86/entry/syscall_64.c:84
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f583c24f559
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 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 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f583a485028 EFLAGS: 00000246 ORIG_RAX: 000000000000001c
RAX: ffffffffffffffda RBX: 00007f583c4d6090 RCX: 00007f583c24f559
RDX: 0000000000000009 RSI: 0000000000600003 RDI: 0000200000000000
RBP: 00007f583c2e6b20 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f583c4d6128 R14: 00007f583c4d6090 R15: 00007fffb642c0c8
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:filemap_unaccount_folio+0x506/0x550 mm/filemap.c:155
Code: b4 be ff 48 89 df 48 c7 c6 00 4c 99 8b e8 12 d7 1f ff 90 0f 0b e8 7a b4 be ff 48 89 df 48 c7 c6 c0 49 99 8b e8 fb d6 1f ff 90 <0f> 0b e8 63 b4 be ff 48 89 df 48 c7 c6 00 4c 99 8b e8 e4 d6 1f ff
RSP: 0018:ffffc90004c26dc0 EFLAGS: 00010246
RAX: a120cf27f1bc8200 RBX: ffffea000099d3c0 RCX: 0000000000000046
RDX: ffffc90010a74000 RSI: ffffffff8dd3962a RDI: ffff88802c455dc0
RBP: 0000000000000001 R08: 0000000000000000 R09: 0000000000000000
R10: dffffc0000000000 R11: ffffed1017084963 R12: ffffea000099d3f0
R13: ffff888079c70900 R14: 1ffffd4000133a78 R15: 1ffffd4000133a79
FS:  00007f583a4856c0(0000) GS:ffff8881247a5000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fb7bfefcc40 CR3: 0000000042d4a000 CR4: 00000000003526f0