smpboot_thread_fn+0x3d3/0xab0 kernel/smpboot.c:160 kthread+0x373/0x450 kernel/kthread.c:436 ret_from_fork+0x730/0xd60 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:858! Oops: invalid opcode: 0000 [#1] SMP KASAN NOPTI CPU: 0 UID: 0 PID: 8846 Comm: syz.7.387 Not tainted syzkaller #0 PREEMPT(full) Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 RIP: 0010:__filemap_add_folio+0x108b/0x1370 mm/filemap.c:858 Code: 79 bf ff 48 c7 c6 40 cb fe 8b 4c 89 ef e8 3d fc 12 00 90 0f 0b e8 c5 79 bf ff 48 c7 c6 a0 cb fe 8b 4c 89 ef e8 26 fc 12 00 90 <0f> 0b e8 ae 79 bf ff 48 c7 c6 20 cc fe 8b 4c 89 ef e8 0f fc 12 00 RSP: 0018:ffffc90005737398 EFLAGS: 00010287 RAX: 00000000000138a9 RBX: 0000000000000000 RCX: ffffc900079b1000 RDX: 0000000000080000 RSI: ffffffff825f8308 RDI: ffff888056af04c4 RBP: 0000000000112c00 R08: 0000000000000001 R09: 0000000000000000 R10: 0000000000000001 R11: 0000000000000001 R12: 0000000000000002 R13: ffffea0000976880 R14: 0000000000000000 R15: 1ffff92000ae6e9f FS: 00007f98a27076c0(0000) GS:ffff8880d5b5f000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00005610256b2e28 CR3: 000000005c926000 CR4: 0000000000352ef0 Call Trace: filemap_add_folio+0x1d8/0x6a0 mm/filemap.c:972 ra_alloc_folio mm/readahead.c:470 [inline] page_cache_ra_order+0x602/0xed0 mm/readahead.c:535 do_sync_mmap_readahead mm/filemap.c:3443 [inline] filemap_fault+0x1943/0x3130 mm/filemap.c:3597 __do_fault+0x10b/0x440 mm/memory.c:5565 do_read_fault mm/memory.c:6000 [inline] do_fault+0xb3f/0x1830 mm/memory.c:6134 do_pte_missing mm/memory.c:4700 [inline] handle_pte_fault mm/memory.c:6558 [inline] __handle_mm_fault+0x150b/0x2f60 mm/memory.c:6707 handle_mm_fault+0x363/0xa20 mm/memory.c:6876 faultin_page mm/gup.c:1126 [inline] __get_user_pages+0x8ae/0x2c30 mm/gup.c:1428 populate_vma_page_range+0x267/0x3f0 mm/gup.c:1860 __mm_populate+0x107/0x3a0 mm/gup.c:1963 mm_populate include/linux/mm.h:4288 [inline] vm_mmap_pgoff+0x441/0x470 mm/util.c:586 ksys_mmap_pgoff+0x3cb/0x610 mm/mmap.c:619 __do_sys_mmap arch/x86/kernel/sys_x86_64.c:89 [inline] __se_sys_mmap arch/x86/kernel/sys_x86_64.c:82 [inline] __x64_sys_mmap+0x125/0x190 arch/x86/kernel/sys_x86_64.c:82 do_syscall_x64 arch/x86/entry/syscall_64.c:61 [inline] do_syscall_64+0x123/0x790 arch/x86/entry/syscall_64.c:84 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f98a179e159 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:00007f98a2707028 EFLAGS: 00000246 ORIG_RAX: 0000000000000009 RAX: ffffffffffffffda RBX: 00007f98a1a26090 RCX: 00007f98a179e159 RDX: 0000000000000007 RSI: 0000000000b36000 RDI: 0000200000000000 RBP: 00007f98a1835024 R08: 0000000000000005 R09: 000000002cb25000 R10: 0000000000028011 R11: 0000000000000246 R12: 0000000000000000 R13: 00007f98a1a26128 R14: 00007f98a1a26090 R15: 00007fff59ebfaa8 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:__filemap_add_folio+0x108b/0x1370 mm/filemap.c:858 Code: 79 bf ff 48 c7 c6 40 cb fe 8b 4c 89 ef e8 3d fc 12 00 90 0f 0b e8 c5 79 bf ff 48 c7 c6 a0 cb fe 8b 4c 89 ef e8 26 fc 12 00 90 <0f> 0b e8 ae 79 bf ff 48 c7 c6 20 cc fe 8b 4c 89 ef e8 0f fc 12 00 RSP: 0018:ffffc90005737398 EFLAGS: 00010287 RAX: 00000000000138a9 RBX: 0000000000000000 RCX: ffffc900079b1000 RDX: 0000000000080000 RSI: ffffffff825f8308 RDI: ffff888056af04c4 RBP: 0000000000112c00 R08: 0000000000000001 R09: 0000000000000000 R10: 0000000000000001 R11: 0000000000000001 R12: 0000000000000002 R13: ffffea0000976880 R14: 0000000000000000 R15: 1ffff92000ae6e9f FS: 00007f98a27076c0(0000) GS:ffff8880d5b5f000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000200000006000 CR3: 000000005c926000 CR4: 0000000000352ef0