reset_page_owner include/linux/page_owner.h:25 [inline] __free_pages_prepare mm/page_alloc.c:1402 [inline] __free_frozen_pages+0xbc7/0xd30 mm/page_alloc.c:2943 rcu_do_batch kernel/rcu/tree.c:2617 [inline] rcu_core+0x7cd/0x1070 kernel/rcu/tree.c:2869 handle_softirqs+0x22a/0x840 kernel/softirq.c:622 run_ksoftirqd+0x36/0x60 kernel/softirq.c:1076 smpboot_thread_fn+0x541/0xa50 kernel/smpboot.c:160 kthread+0x388/0x470 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:860! Oops: invalid opcode: 0000 [#1] SMP KASAN PTI CPU: 0 UID: 0 PID: 8121 Comm: syz.1.582 Tainted: G L syzkaller #0 PREEMPT(full) Tainted: [L]=SOFTLOCKUP Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 RIP: 0010:__filemap_add_folio+0x11bc/0x1330 mm/filemap.c:859 Code: f4 c4 ff 4c 89 e7 48 c7 c6 c0 b5 d7 8b e8 0c a5 26 ff 90 0f 0b e8 f4 f3 c4 ff 4c 89 e7 48 c7 c6 20 aa d7 8b e8 f5 a4 26 ff 90 <0f> 0b e8 dd f3 c4 ff 4c 89 e7 48 c7 c6 c0 b5 d7 8b e8 de a4 26 ff RSP: 0018:ffffc900038d75c0 EFLAGS: 00010246 RAX: 803058b65e98da00 RBX: 0000000000000000 RCX: 0000000000000000 RDX: 0000000000000007 RSI: ffffffff8e106c7e RDI: 00000000ffffffff RBP: ffffc900038d7740 R08: ffffffff9033bef7 R09: 1ffffffff20677de R10: dffffc0000000000 R11: fffffbfff20677df R12: ffffea0000d305c0 R13: dffffc0000000000 R14: ffffea0000d305c8 R15: 0000000000000004 FS: 0000555590891500(0000) GS:ffff888125204000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00002000000000c4 CR3: 000000007563e000 CR4: 00000000003526f0 Call Trace: filemap_add_folio+0x264/0x530 mm/filemap.c:967 ra_alloc_folio mm/readahead.c:456 [inline] page_cache_ra_order+0x6a9/0xe80 mm/readahead.c:515 do_sync_mmap_readahead+0x6ad/0x8e0 mm/filemap.c:3406 filemap_fault+0x703/0x1300 mm/filemap.c:3555 __do_fault+0x3e7/0x590 mm/memory.c:5501 do_shared_fault mm/memory.c:6000 [inline] do_fault mm/memory.c:6074 [inline] do_pte_missing+0x601/0x33f0 mm/memory.c:4550 handle_pte_fault mm/memory.c:6454 [inline] __handle_mm_fault mm/memory.c:6592 [inline] handle_mm_fault+0x1bd7/0x3170 mm/memory.c:6761 do_user_addr_fault+0xa73/0x1340 arch/x86/mm/fault.c:1334 handle_page_fault arch/x86/mm/fault.c:1474 [inline] exc_page_fault+0x6a/0xc0 arch/x86/mm/fault.c:1527 asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:618 RIP: 0033:0x7f7836e65f62 Code: 30 48 8b 14 24 48 85 d2 74 17 8b 44 24 10 0f c8 89 c0 48 89 44 24 10 48 83 fa 01 0f 85 aa 02 00 00 48 8b 44 24 18 8b 74 24 10 <89> 30 e9 1e fe ff ff 48 8b 44 24 18 8b 10 48 8b 04 24 48 85 c0 0f RSP: 002b:00007ffc92d7a370 EFLAGS: 00010246 RAX: 0000200000000100 RBX: 0000000000000004 RCX: 0000000000000000 RDX: 0000000000000000 RSI: 0000000000000006 RDI: 00005555908913d8 RBP: 00007ffc92d7a490 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000006 R11: 0000000000000000 R12: 00007ffc92d7a4d0 R13: 00007f783721609c R14: 0000000000032297 R15: 00007ffc92d7a4b0 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:__filemap_add_folio+0x11bc/0x1330 mm/filemap.c:859 Code: f4 c4 ff 4c 89 e7 48 c7 c6 c0 b5 d7 8b e8 0c a5 26 ff 90 0f 0b e8 f4 f3 c4 ff 4c 89 e7 48 c7 c6 20 aa d7 8b e8 f5 a4 26 ff 90 <0f> 0b e8 dd f3 c4 ff 4c 89 e7 48 c7 c6 c0 b5 d7 8b e8 de a4 26 ff RSP: 0018:ffffc900038d75c0 EFLAGS: 00010246 RAX: 803058b65e98da00 RBX: 0000000000000000 RCX: 0000000000000000 RDX: 0000000000000007 RSI: ffffffff8e106c7e RDI: 00000000ffffffff RBP: ffffc900038d7740 R08: ffffffff9033bef7 R09: 1ffffffff20677de R10: dffffc0000000000 R11: fffffbfff20677df R12: ffffea0000d305c0 R13: dffffc0000000000 R14: ffffea0000d305c8 R15: 0000000000000004 FS: 0000555590891500(0000) GS:ffff888125304000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f75e9bebf60 CR3: 000000007563e000 CR4: 00000000003526f0