loop5: detected capacity change from 0 to 64 ------------[ cut here ]------------ WARNING: CPU: 0 PID: 19498 at fs/buffer.c:1130 mark_buffer_dirty+0x2dd/0x500 Modules linked in: CPU: 0 PID: 19498 Comm: syz-executor.5 Not tainted 6.4.0-rc5-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/25/2023 RIP: 0010:mark_buffer_dirty+0x2dd/0x500 fs/buffer.c:1130 Code: df e8 57 0e e0 ff 48 8b 3b be 04 00 00 00 5b 41 5c 41 5e 41 5f 5d e9 22 69 fc ff e8 3d 39 88 ff e9 71 ff ff ff e8 33 39 88 ff <0f> 0b e9 6d fd ff ff e8 27 39 88 ff 0f 0b e9 96 fd ff ff e8 1b 39 RSP: 0018:ffffc90016cf77c8 EFLAGS: 00010283 RAX: ffffffff820345fd RBX: ffff888015fcc201 RCX: 0000000000040000 RDX: ffffc9000dfe1000 RSI: 000000000001d58b RDI: 000000000001d58c RBP: 0000000000000000 R08: ffffffff82034364 R09: ffffed100686efd1 R10: 0000000000000000 R11: dffffc0000000001 R12: ffff888034377e80 R13: ffff88807c178488 R14: ffff888034377e80 R15: dffffc0000000000 FS: 00007f4a76faa700(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f5c0d2d56be CR3: 000000002a00e000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: bfs_move_block fs/bfs/file.c:43 [inline] bfs_move_blocks fs/bfs/file.c:56 [inline] bfs_get_block+0x856/0xad0 fs/bfs/file.c:125 __block_write_begin_int+0x548/0x1a50 fs/buffer.c:2064 __block_write_begin fs/buffer.c:2114 [inline] block_write_begin+0x9c/0x1f0 fs/buffer.c:2175 bfs_write_begin+0x35/0xd0 fs/bfs/file.c:177 generic_perform_write+0x300/0x5e0 mm/filemap.c:3923 __generic_file_write_iter+0x17a/0x400 mm/filemap.c:4051 generic_file_write_iter+0xaf/0x310 mm/filemap.c:4083 call_write_iter include/linux/fs.h:1868 [inline] new_sync_write fs/read_write.c:491 [inline] vfs_write+0x790/0xb20 fs/read_write.c:584 ksys_write+0x1a0/0x2c0 fs/read_write.c:637 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7f4a7628c169 Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 f1 19 00 00 90 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 b8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f4a76faa168 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 00007f4a763abf80 RCX: 00007f4a7628c169 RDX: 000000000000fea7 RSI: 0000000020000040 RDI: 0000000000000005 RBP: 00007f4a762e7ca1 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffeb259707f R14: 00007f4a76faa300 R15: 0000000000022000