EXT4-fs (loop3): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: writeback.
ext4 filesystem being mounted at /30/file1 supports timestamps until 2038-01-19 (0x7fffffff)
==================================================================
BUG: KCSAN: data-race in __mark_inode_dirty / move_expired_inodes

read-write to 0xffff8881006316f8 of 8 bytes by task 40 on cpu 1:
 move_expired_inodes+0x17b/0x410 fs/fs-writeback.c:1429
 queue_io+0xe1/0x2e0 fs/fs-writeback.c:1481
 wb_writeback+0x22f/0x720 fs/fs-writeback.c:2123
 wb_check_start_all fs/fs-writeback.c:2255 [inline]
 wb_do_writeback fs/fs-writeback.c:2281 [inline]
 wb_workfn+0x4ea/0x940 fs/fs-writeback.c:2314
 process_one_work kernel/workqueue.c:3231 [inline]
 process_scheduled_works+0x483/0x9a0 kernel/workqueue.c:3312
 worker_thread+0x526/0x700 kernel/workqueue.c:3390
 kthread+0x1d1/0x210 kernel/kthread.c:389
 ret_from_fork+0x4b/0x60 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244

read to 0xffff8881006316f8 of 8 bytes by task 3810 on cpu 0:
 __mark_inode_dirty+0x19f/0x7e0 fs/fs-writeback.c:2508
 mark_buffer_dirty+0x149/0x230 fs/buffer.c:1209
 mark_buffer_dirty_inode+0x4c/0x1c0 fs/buffer.c:672
 __ext4_handle_dirty_metadata+0x196/0x470 fs/ext4/ext4_jbd2.c:382
 ext4_xattr_block_set+0x17e0/0x1ca0 fs/ext4/xattr.c:2166
 ext4_xattr_set_handle+0x8ac/0xbf0 fs/ext4/xattr.c:2458
 ext4_initxattrs+0x60/0xb0 fs/ext4/xattr_security.c:44
 security_inode_init_security+0x19d/0x290 security/security.c:1744
 ext4_init_security+0x34/0x40 fs/ext4/xattr_security.c:58
 __ext4_new_inode+0x2000/0x2200 fs/ext4/ialloc.c:1326
 ext4_create+0x172/0x2f0 fs/ext4/namei.c:2832
 lookup_open fs/namei.c:3578 [inline]
 open_last_lookups fs/namei.c:3647 [inline]
 path_openat+0xdbc/0x1f10 fs/namei.c:3883
 do_filp_open+0xf7/0x200 fs/namei.c:3913
 do_sys_openat2+0xab/0x120 fs/open.c:1416
 do_sys_open fs/open.c:1431 [inline]
 __do_sys_openat fs/open.c:1447 [inline]
 __se_sys_openat fs/open.c:1442 [inline]
 __x64_sys_openat+0xf3/0x120 fs/open.c:1442
 x64_sys_call+0x1025/0x2d60 arch/x86/include/generated/asm/syscalls_64.h:258
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xc9/0x1c0 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f

value changed: 0x0000000000000004 -> 0x0000000000020084

Reported by Kernel Concurrency Sanitizer on:
CPU: 0 UID: 0 PID: 3810 Comm: syz.3.115 Not tainted 6.11.0-rc1-syzkaller-00272-g17712b7ea075 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/27/2024
==================================================================
netlink: 8 bytes leftover after parsing attributes in process `syz.3.115'.