handle_softirqs+0x22a/0x870 kernel/softirq.c:622
 run_ksoftirqd+0x36/0x60 kernel/softirq.c:1063
 smpboot_thread_fn+0x541/0xa50 kernel/smpboot.c:160
 kthread+0x388/0x470 kernel/kthread.c:467
 ret_from_fork+0x51e/0xb90 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:859!
Oops: invalid opcode: 0000 [#1] SMP KASAN NOPTI
CPU: 0 UID: 0 PID: 20294 Comm: syz.4.4411 Tainted: G             L      syzkaller #0 PREEMPT(full) 
Tainted: [L]=SOFTLOCKUP
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2026
RIP: 0010:__filemap_add_folio+0x11bc/0x1350 mm/filemap.c:858
Code: 57 c5 ff 4c 89 e7 48 c7 c6 20 a5 d7 8b e8 cc e4 27 ff 90 0f 0b e8 b4 57 c5 ff 4c 89 e7 48 c7 c6 c0 99 d7 8b e8 b5 e4 27 ff 90 <0f> 0b e8 9d 57 c5 ff 4c 89 e7 48 c7 c6 20 a5 d7 8b e8 9e e4 27 ff
RSP: 0018:ffffc9000d3371e0 EFLAGS: 00010246
RAX: 53d47d3abdc84a00 RBX: 0000000000000000 RCX: 0000000000000000
RDX: 0000000000000007 RSI: ffffffff8def225c RDI: 00000000ffffffff
RBP: ffffc9000d337360 R08: ffffffff90117db7 R09: 1ffffffff2022fb6
R10: dffffc0000000000 R11: fffffbfff2022fb7 R12: ffffea0001f8c4c0
R13: dffffc0000000000 R14: ffffea0001f8c4c8 R15: 0000000000000004
FS:  00007f9a824396c0(0000) GS:ffff888125467000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fddad44e9d3 CR3: 00000000965f4000 CR4: 0000000000350ef0
DR0: 0000000000000000 DR1: 0000000000001000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
 <TASK>
 filemap_add_folio+0x264/0x530 mm/filemap.c:966
 ra_alloc_folio mm/readahead.c:456 [inline]
 page_cache_ra_order+0x6b5/0xeb0 mm/readahead.c:515
 do_sync_mmap_readahead+0x6ad/0x8e0 mm/filemap.c:3400
 filemap_fault+0x6e2/0x1320 mm/filemap.c:3549
 __do_fault+0x138/0x390 mm/memory.c:5363
 do_read_fault mm/memory.c:5798 [inline]
 do_fault mm/memory.c:5932 [inline]
 do_pte_missing+0x228f/0x3750 mm/memory.c:4477
 handle_pte_fault mm/memory.c:6316 [inline]
 __handle_mm_fault mm/memory.c:6454 [inline]
 handle_mm_fault+0x1bec/0x3310 mm/memory.c:6623
 faultin_page mm/gup.c:1126 [inline]
 __get_user_pages+0x165b/0x29d0 mm/gup.c:1428
 populate_vma_page_range+0x2be/0x3c0 mm/gup.c:1860
 __mm_populate+0x25f/0x390 mm/gup.c:1963
 mm_populate include/linux/mm.h:3899 [inline]
 vm_mmap_pgoff+0x3aa/0x4f0 mm/util.c:586
 ksys_mmap_pgoff+0x51e/0x760 mm/mmap.c:605
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0x14d/0xf80 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f9a8159c629
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:00007f9a82439028 EFLAGS: 00000246 ORIG_RAX: 0000000000000009
RAX: ffffffffffffffda RBX: 00007f9a81816090 RCX: 00007f9a8159c629
RDX: 0000000001000002 RSI: 0000000000b36000 RDI: 0000200000000000
RBP: 00007f9a81632b39 R08: 0000000000000004 R09: 000000002c93a000
R10: 0000000000028011 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f9a81816128 R14: 00007f9a81816090 R15: 00007ffc7eb52988
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:__filemap_add_folio+0x11bc/0x1350 mm/filemap.c:858
Code: 57 c5 ff 4c 89 e7 48 c7 c6 20 a5 d7 8b e8 cc e4 27 ff 90 0f 0b e8 b4 57 c5 ff 4c 89 e7 48 c7 c6 c0 99 d7 8b e8 b5 e4 27 ff 90 <0f> 0b e8 9d 57 c5 ff 4c 89 e7 48 c7 c6 20 a5 d7 8b e8 9e e4 27 ff
RSP: 0018:ffffc9000d3371e0 EFLAGS: 00010246
RAX: 53d47d3abdc84a00 RBX: 0000000000000000 RCX: 0000000000000000
RDX: 0000000000000007 RSI: ffffffff8def225c RDI: 00000000ffffffff
RBP: ffffc9000d337360 R08: ffffffff90117db7 R09: 1ffffffff2022fb6
R10: dffffc0000000000 R11: fffffbfff2022fb7 R12: ffffea0001f8c4c0
R13: dffffc0000000000 R14: ffffea0001f8c4c8 R15: 0000000000000004
FS:  00007f9a824396c0(0000) GS:ffff888125567000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f0e76de82f8 CR3: 00000000965f4000 CR4: 0000000000350ef0
DR0: 0000000000000000 DR1: 0000000000001000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600