loop4: detected capacity change from 0 to 264192
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BUG: KCSAN: data-race in __ext4_update_other_inode_time / d_instantiate_new

write to 0xffff888123a6eb60 of 8 bytes by task 17027 on cpu 1:
 d_instantiate_new+0x99/0xe0 fs/dcache.c:2057
 ext4_add_nondir+0x15e/0x180 fs/ext4/namei.c:2714
 ext4_symlink+0x4a5/0x6f0 fs/ext4/namei.c:3363
 vfs_symlink+0x18a/0x280 fs/namei.c:4297
 do_symlinkat+0xe2/0x330 fs/namei.c:4326
 __do_sys_symlinkat fs/namei.c:4343 [inline]
 __se_sys_symlinkat fs/namei.c:4340 [inline]
 __x64_sys_symlinkat+0x5e/0x70 fs/namei.c:4340
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x2b/0x70 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x44/0xae

read to 0xffff888123a6eb60 of 8 bytes by task 17028 on cpu 0:
 inode_is_dirtytime_only include/linux/fs.h:2343 [inline]
 __ext4_update_other_inode_time+0x45/0x540 fs/ext4/inode.c:5047
 ext4_update_other_inodes_time fs/ext4/inode.c:5090 [inline]
 ext4_do_update_inode fs/ext4/inode.c:5139 [inline]
 ext4_mark_iloc_dirty+0x4c6/0x860 fs/ext4/inode.c:5724
 __ext4_mark_inode_dirty+0x452/0x610 fs/ext4/inode.c:5920
 ext4_dirty_inode+0x86/0xa0 fs/ext4/inode.c:5949
 __mark_inode_dirty+0x70/0x5f0 fs/fs-writeback.c:2367
 mark_inode_dirty include/linux/fs.h:2324 [inline]
 dquot_alloc_space include/linux/quotaops.h:317 [inline]
 dquot_alloc_block include/linux/quotaops.h:334 [inline]
 ext4_mb_new_blocks+0xce3/0xfd0 fs/ext4/mballoc.c:5578
 ext4_ext_map_blocks+0xd55/0x1bb0 fs/ext4/extents.c:4281
 ext4_map_blocks+0x75b/0xfc0 fs/ext4/inode.c:636
 ext4_getblk+0xcb/0x410 fs/ext4/inode.c:847
 ext4_bread+0x28/0x100 fs/ext4/inode.c:900
 ext4_append+0xd1/0x1c0 fs/ext4/namei.c:67
 ext4_init_new_dir+0x177/0x500 fs/ext4/namei.c:2893
 ext4_mkdir+0x329/0x760 fs/ext4/namei.c:2939
 vfs_mkdir+0x216/0x320 fs/namei.c:3931
 do_mkdirat+0x105/0x280 fs/namei.c:3957
 __do_sys_mkdirat fs/namei.c:3972 [inline]
 __se_sys_mkdirat fs/namei.c:3970 [inline]
 __x64_sys_mkdirat+0x4c/0x60 fs/namei.c:3970
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x2b/0x70 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x44/0xae

value changed: 0x0000000000008008 -> 0x0000000000000000

Reported by Kernel Concurrency Sanitizer on:
CPU: 0 PID: 17028 Comm: syz-executor.4 Not tainted 5.18.0-rc6-syzkaller-00009-gfeb9c5e19e91 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
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