==================================================================
BUG: KCSAN: data-race in __mark_inode_dirty / __writeback_single_inode

write to 0xffff888106b373f0 of 8 bytes by task 5647 on cpu 0:
 __mark_inode_dirty+0x256/0x7e0 fs/fs-writeback.c:2517
 mark_inode_dirty include/linux/fs.h:2404 [inline]
 dquot_alloc_space include/linux/quotaops.h:319 [inline]
 dquot_alloc_block include/linux/quotaops.h:336 [inline]
 ext4_mb_new_blocks+0x103e/0x2020 fs/ext4/mballoc.c:6185
 ext4_ext_map_blocks+0x10a1/0x33b0 fs/ext4/extents.c:4318
 ext4_map_blocks+0x72a/0xf50 fs/ext4/inode.c:623
 ext4_alloc_file_blocks+0x285/0x700 fs/ext4/extents.c:4495
 ext4_zero_range+0x77c/0x890 fs/ext4/extents.c:4658
 ext4_fallocate+0x3af/0x1190 fs/ext4/extents.c:4757
 vfs_fallocate+0x380/0x3e0 fs/open.c:330
 do_vfs_ioctl+0x1481/0x1560 fs/ioctl.c:886
 __do_sys_ioctl fs/ioctl.c:905 [inline]
 __se_sys_ioctl+0x81/0x150 fs/ioctl.c:893
 __x64_sys_ioctl+0x43/0x50 fs/ioctl.c:893
 x64_sys_call+0x1581/0x2d70 arch/x86/include/generated/asm/syscalls_64.h:17
 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

read to 0xffff888106b373f0 of 8 bytes by task 36 on cpu 1:
 __writeback_single_inode+0x11e/0x870 fs/fs-writeback.c:1671
 writeback_sb_inodes+0x559/0xb20 fs/fs-writeback.c:1947
 wb_writeback+0x25e/0x720 fs/fs-writeback.c:2127
 wb_do_writeback fs/fs-writeback.c:2274 [inline]
 wb_workfn+0x1a8/0x940 fs/fs-writeback.c:2314
 process_one_work kernel/workqueue.c:3248 [inline]
 process_scheduled_works+0x483/0x9a0 kernel/workqueue.c:3329
 worker_thread+0x526/0x720 kernel/workqueue.c:3409
 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

value changed: 0x0000000000020081 -> 0x0000000000020087

Reported by Kernel Concurrency Sanitizer on:
CPU: 1 PID: 36 Comm: kworker/u8:2 Not tainted 6.10.0-rc5-syzkaller-00280-g27b31deb900d #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/07/2024
Workqueue: writeback wb_workfn (flush-8:0)
==================================================================
netdevsim netdevsim3 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0
netdevsim netdevsim3 netdevsim2 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0
netdevsim netdevsim3 netdevsim1 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0
netdevsim netdevsim3 netdevsim0 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0
bond0 (unregistering): (slave bond_slave_0): Releasing backup interface
bond0 (unregistering): (slave bond_slave_1): Releasing backup interface
bond0 (unregistering): Released all slaves
hsr_slave_0: left promiscuous mode
hsr_slave_1: left promiscuous mode
batman_adv: batadv0: Interface deactivated: batadv_slave_0
batman_adv: batadv0: Removing interface: batadv_slave_0
batman_adv: batadv0: Interface deactivated: batadv_slave_1
batman_adv: batadv0: Removing interface: batadv_slave_1
veth1_macvtap: left promiscuous mode
veth0_macvtap: left promiscuous mode
veth1_vlan: left promiscuous mode
veth0_vlan: left promiscuous mode
team0 (unregistering): Port device team_slave_1 removed
team0 (unregistering): Port device team_slave_0 removed