loop9: unable to read partition table
loop_reread_partitions: partition scan of loop9 (�被x������ڬ��dG�����ݡ�����

) failed (rc=-5)
netlink: 200 bytes leftover after parsing attributes in process `+}[@'.
==================================================================
BUG: KCSAN: data-race in __mark_inode_dirty / __writeback_single_inode

read-write to 0xffff88811a8716f8 of 4 bytes by task 380 on cpu 0:
 __writeback_single_inode+0x1e3/0x7c0 fs/fs-writeback.c:1716
 writeback_sb_inodes+0x480/0xa20 fs/fs-writeback.c:1976
 __writeback_inodes_wb+0x94/0x1a0 fs/fs-writeback.c:2047
 wb_writeback+0x266/0x5c0 fs/fs-writeback.c:2158
 wb_check_start_all fs/fs-writeback.c:2284 [inline]
 wb_do_writeback fs/fs-writeback.c:2310 [inline]
 wb_workfn+0x4c9/0x910 fs/fs-writeback.c:2343
 process_one_work kernel/workqueue.c:3238 [inline]
 process_scheduled_works+0x4cb/0x9d0 kernel/workqueue.c:3321
 worker_thread+0x582/0x770 kernel/workqueue.c:3402
 kthread+0x489/0x510 kernel/kthread.c:464
 ret_from_fork+0xda/0x150 arch/x86/kernel/process.c:148
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245

read to 0xffff88811a8716f8 of 4 bytes by task 11112 on cpu 1:
 __mark_inode_dirty+0x18e/0x760 fs/fs-writeback.c:2549
 mark_buffer_dirty+0x133/0x210 fs/buffer.c:1215
 __ext4_handle_dirty_metadata+0x200/0x470 fs/ext4/ext4_jbd2.c:389
 ext4_do_update_inode fs/ext4/inode.c:5577 [inline]
 ext4_mark_iloc_dirty+0xa37/0xda0 fs/ext4/inode.c:6224
 __ext4_mark_inode_dirty+0x2e2/0x3f0 fs/ext4/inode.c:6430
 ext4_dirty_inode+0x92/0xc0 fs/ext4/inode.c:6459
 __mark_inode_dirty+0x15f/0x760 fs/fs-writeback.c:2527
 ext4_mb_new_blocks+0x10b9/0x2050 fs/ext4/mballoc.c:-1
 ext4_ext_map_blocks+0xff5/0x38a0 fs/ext4/extents.c:4383
 ext4_map_create_blocks fs/ext4/inode.c:609 [inline]
 ext4_map_blocks+0x61c/0xd70 fs/ext4/inode.c:813
 _ext4_get_block+0x10a/0x350 fs/ext4/inode.c:892
 ext4_get_block_unwritten+0x2a/0xb0 fs/ext4/inode.c:925
 ext4_block_write_begin+0x3d0/0xa60 fs/ext4/inode.c:1178
 ext4_write_begin+0x56b/0xd30 fs/ext4/ext4_jbd2.h:-1
 ext4_da_write_begin+0x1e0/0x670 fs/ext4/inode.c:3057
 generic_perform_write+0x181/0x490 mm/filemap.c:4112
 ext4_buffered_write_iter+0x1ee/0x3c0 fs/ext4/file.c:299
 ext4_file_write_iter+0x383/0xf00 fs/ext4/file.c:-1
 new_sync_write fs/read_write.c:593 [inline]
 vfs_write+0x49d/0x8e0 fs/read_write.c:686
 ksys_pwrite64 fs/read_write.c:793 [inline]
 __do_sys_pwrite64 fs/read_write.c:801 [inline]
 __se_sys_pwrite64 fs/read_write.c:798 [inline]
 __x64_sys_pwrite64+0xfd/0x150 fs/read_write.c:798
 x64_sys_call+0xe45/0x2fb0 arch/x86/include/generated/asm/syscalls_64.h:19
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xd2/0x200 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f

value changed: 0x00010022 -> 0x00000020

Reported by Kernel Concurrency Sanitizer on:
CPU: 1 UID: 0 PID: 11112 Comm: +}[@ Not tainted 6.16.0-rc6-syzkaller-00037-ge2291551827f #0 PREEMPT(voluntary) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025
==================================================================