loop6: detected capacity change from 0 to 512
EXT4-fs: Ignoring removed nomblk_io_submit option
==================================================================
BUG: KCSAN: data-race in __find_get_block / has_bh_in_lru

read-write to 0xffff888237d2ba28 of 8 bytes by task 13874 on cpu 1:
 bh_lru_install fs/buffer.c:1337 [inline]
 __find_get_block+0x434/0x8a0 fs/buffer.c:1400
 bdev_getblk+0x30/0x3b0 fs/buffer.c:1425
 __getblk include/linux/buffer_head.h:380 [inline]
 sb_getblk include/linux/buffer_head.h:386 [inline]
 __ext4_get_inode_loc+0x2f7/0x910 fs/ext4/inode.c:4440
 ext4_get_inode_loc+0x65/0xe0 fs/ext4/inode.c:4568
 ext4_xattr_ibody_get+0x99/0x430 fs/ext4/xattr.c:647
 ext4_xattr_get+0xd4/0x580 fs/ext4/xattr.c:711
 ext4_xattr_security_get+0x32/0x40 fs/ext4/xattr_security.c:20
 __vfs_getxattr+0x29f/0x2b0 fs/xattr.c:423
 cap_inode_need_killpriv+0x2e/0x50 security/commoncap.c:302
 security_inode_need_killpriv+0x33/0x70 security/security.c:2633
 dentry_needs_remove_privs fs/inode.c:2220 [inline]
 file_remove_privs_flags+0x132/0x330 fs/inode.c:2251
 file_modified_flags+0x34/0x320 fs/inode.c:2411
 file_modified+0x17/0x20 fs/inode.c:2440
 ext4_fallocate+0x719/0x1170 fs/ext4/extents.c:4818
 vfs_fallocate+0x368/0x3b0 fs/open.c:327
 ksys_fallocate fs/open.c:351 [inline]
 __do_sys_fallocate fs/open.c:356 [inline]
 __se_sys_fallocate fs/open.c:354 [inline]
 __x64_sys_fallocate+0x78/0xc0 fs/open.c:354
 x64_sys_call+0x43c/0x2dc0 arch/x86/include/generated/asm/syscalls_64.h:286
 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 0xffff888237d2ba28 of 8 bytes by task 13873 on cpu 0:
 has_bh_in_lru+0x35/0x1f0 fs/buffer.c:1521
 smp_call_function_many_cond+0x2d5/0xc20 kernel/smp.c:837
 on_each_cpu_cond_mask+0x3c/0x90 kernel/smp.c:1051
 on_each_cpu_cond include/linux/smp.h:105 [inline]
 invalidate_bh_lrus+0x2a/0x30 fs/buffer.c:1530
 kill_bdev block/bdev.c:90 [inline]
 set_blocksize+0x24c/0x270 block/bdev.c:173
 sb_set_blocksize block/bdev.c:182 [inline]
 sb_min_blocksize+0x63/0xe0 block/bdev.c:198
 ext4_load_super fs/ext4/super.c:5038 [inline]
 __ext4_fill_super fs/ext4/super.c:5259 [inline]
 ext4_fill_super+0x38b/0x3a10 fs/ext4/super.c:5733
 get_tree_bdev_flags+0x29f/0x310 fs/super.c:1636
 get_tree_bdev+0x1f/0x30 fs/super.c:1659
 ext4_get_tree+0x1c/0x30 fs/ext4/super.c:5765
 vfs_get_tree+0x56/0x1e0 fs/super.c:1814
 do_new_mount+0x227/0x690 fs/namespace.c:3507
 path_mount+0x49b/0xb30 fs/namespace.c:3834
 do_mount fs/namespace.c:3847 [inline]
 __do_sys_mount fs/namespace.c:4057 [inline]
 __se_sys_mount+0x27c/0x2d0 fs/namespace.c:4034
 __x64_sys_mount+0x67/0x80 fs/namespace.c:4034
 x64_sys_call+0x2c84/0x2dc0 arch/x86/include/generated/asm/syscalls_64.h:166
 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: 0xffff8881063df888 -> 0xffff8881063df750

Reported by Kernel Concurrency Sanitizer on:
CPU: 0 UID: 0 PID: 13873 Comm: syz.6.3261 Not tainted 6.13.0-rc1-syzkaller-00337-g7503345ac5f5 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
==================================================================
EXT4-fs (loop6): revision level too high, forcing read-only mode
[EXT4 FS bs=1024, gc=1, bpg=8192, ipg=32, mo=1842c01c, mo2=0002]
EXT4-fs (loop6): couldn't mount RDWR because of unsupported optional features (80)
EXT4-fs (loop6): Skipping orphan cleanup due to unknown ROCOMPAT features
netlink: 64 bytes leftover after parsing attributes in process `syz.6.3261'.