blkdev_write_iter+0x547/0x710 block/fops.c:795 new_sync_write fs/read_write.c:593 [inline] vfs_write+0x5c9/0xb30 fs/read_write.c:686 ksys_write+0x145/0x250 fs/read_write.c:738 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xfa/0xfa0 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f ------------[ cut here ]------------ kernel BUG at mm/filemap.c:859! Oops: invalid opcode: 0000 [#1] SMP KASAN PTI CPU: 0 UID: 0 PID: 10522 Comm: syz.3.1748 Not tainted syzkaller #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/02/2025 RIP: 0010:__filemap_add_folio+0x11ad/0x12f0 mm/filemap.c:858 Code: fa c7 ff 4c 89 e7 48 c7 c6 a0 6a 94 8b e8 4b 11 2f ff 90 0f 0b e8 f3 f9 c7 ff 4c 89 e7 48 c7 c6 80 61 94 8b e8 34 11 2f ff 90 <0f> 0b e8 dc f9 c7 ff 4c 89 e7 48 c7 c6 a0 6a 94 8b e8 1d 11 2f ff RSP: 0018:ffffc9001a5671e0 EFLAGS: 00010246 RAX: 4d3c685033c54d00 RBX: 0000000000000000 RCX: 0000000000000000 RDX: 0000000000000007 RSI: ffffffff8da7b4a7 RDI: 00000000ffffffff RBP: ffffc9001a567348 R08: ffffffff8fbf0777 R09: 1ffffffff1f7e0ee R10: dffffc0000000000 R11: fffffbfff1f7e0ef R12: ffffea0001fed400 R13: dffffc0000000000 R14: ffffea0001fed408 R15: 0000000000000004 FS: 00007f05222986c0(0000) GS:ffff888125a9c000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000200000000180 CR3: 000000007acc6000 CR4: 00000000003526f0 Call Trace: filemap_add_folio+0x26d/0x540 mm/filemap.c:966 ra_alloc_folio mm/readahead.c:453 [inline] page_cache_ra_order+0x6be/0xe70 mm/readahead.c:512 do_sync_mmap_readahead+0x66a/0x870 mm/filemap.c:3400 filemap_fault+0x6bc/0x12b0 mm/filemap.c:3549 __do_fault+0x138/0x390 mm/memory.c:5325 do_shared_fault mm/memory.c:5824 [inline] do_fault mm/memory.c:5898 [inline] do_pte_missing mm/memory.c:4406 [inline] handle_pte_fault mm/memory.c:6239 [inline] __handle_mm_fault+0x1842/0x5440 mm/memory.c:6381 handle_mm_fault+0x40a/0x8e0 mm/memory.c:6550 faultin_page mm/gup.c:1126 [inline] __get_user_pages+0x1650/0x29f0 mm/gup.c:1428 __get_user_pages_locked mm/gup.c:1692 [inline] faultin_page_range+0x240/0x8d0 mm/gup.c:1912 madvise_populate mm/madvise.c:979 [inline] madvise_do_behavior+0x2e7/0x550 mm/madvise.c:1883 do_madvise+0x1bc/0x270 mm/madvise.c:1978 __do_sys_madvise mm/madvise.c:1987 [inline] __se_sys_madvise mm/madvise.c:1985 [inline] __x64_sys_madvise+0xa7/0xc0 mm/madvise.c:1985 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xfa/0xfa0 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f052138efc9 Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 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 a8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f0522298038 EFLAGS: 00000246 ORIG_RAX: 000000000000001c RAX: ffffffffffffffda RBX: 00007f05215e5fa0 RCX: 00007f052138efc9 RDX: 0000000000000017 RSI: 0000000000c00000 RDI: 0000200000000000 RBP: 00007f0521411f91 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007f05215e6038 R14: 00007f05215e5fa0 R15: 00007ffd426b45c8 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:__filemap_add_folio+0x11ad/0x12f0 mm/filemap.c:858 Code: fa c7 ff 4c 89 e7 48 c7 c6 a0 6a 94 8b e8 4b 11 2f ff 90 0f 0b e8 f3 f9 c7 ff 4c 89 e7 48 c7 c6 80 61 94 8b e8 34 11 2f ff 90 <0f> 0b e8 dc f9 c7 ff 4c 89 e7 48 c7 c6 a0 6a 94 8b e8 1d 11 2f ff RSP: 0018:ffffc9001a5671e0 EFLAGS: 00010246 RAX: 4d3c685033c54d00 RBX: 0000000000000000 RCX: 0000000000000000 RDX: 0000000000000007 RSI: ffffffff8da7b4a7 RDI: 00000000ffffffff RBP: ffffc9001a567348 R08: ffffffff8fbf0777 R09: 1ffffffff1f7e0ee R10: dffffc0000000000 R11: fffffbfff1f7e0ef R12: ffffea0001fed400 R13: dffffc0000000000 R14: ffffea0001fed408 R15: 0000000000000004 FS: 00007f05222986c0(0000) GS:ffff888125a9c000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000200000000180 CR3: 000000007acc6000 CR4: 00000000003526f0