EXT4-fs error (device loop4): ext4_xattr_delete_inode:3006: inode #18: comm syz.4.2189: mark_inode_dirty error
==================================================================
BUG: KCSAN: data-race in data_push_tail / number

write to 0xffffffff88bbf222 of 1 bytes by task 11062 on cpu 0:
 number+0x3eb/0xa90 lib/vsprintf.c:529
 vsnprintf+0xa44/0xe30 lib/vsprintf.c:2914
 va_format lib/vsprintf.c:1718 [inline]
 pointer+0x8a1/0xd20 lib/vsprintf.c:2479
 vsnprintf+0x861/0xe30 lib/vsprintf.c:2852
 vscnprintf+0x42/0x90 lib/vsprintf.c:2954
 printk_sprint+0x30/0x2d0 kernel/printk/printk.c:2216
 vprintk_store+0x589/0x870 kernel/printk/printk.c:2336
 vprintk_emit+0x15e/0x680 kernel/printk/printk.c:2408
 vprintk_default+0x26/0x30 kernel/printk/printk.c:2447
 vprintk+0x75/0x80 kernel/printk/printk_safe.c:86
 _printk+0x7a/0xa0 kernel/printk/printk.c:2457
 __ext4_warning+0x130/0x140 fs/ext4/super.c:1023
 ext4_evict_inode+0x855/0xdd0
 evict+0x2f0/0x570 fs/inode.c:796
 iput_final fs/inode.c:1946 [inline]
 iput+0x42a/0x5b0 fs/inode.c:1972
 ext4_ext_migrate+0x8e3/0x9a0 fs/ext4/migrate.c:588
 __ext4_ioctl fs/ext4/ioctl.c:1401 [inline]
 ext4_ioctl+0x103f/0x2dd0 fs/ext4/ioctl.c:1619
 vfs_ioctl fs/ioctl.c:51 [inline]
 __do_sys_ioctl fs/ioctl.c:906 [inline]
 __se_sys_ioctl+0xc9/0x140 fs/ioctl.c:892
 __x64_sys_ioctl+0x43/0x50 fs/ioctl.c:892
 x64_sys_call+0x1690/0x2dc0 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 0xffffffff88bbf220 of 8 bytes by task 11066 on cpu 1:
 data_make_reusable kernel/printk/printk_ringbuffer.c:594 [inline]
 data_push_tail+0x102/0x430 kernel/printk/printk_ringbuffer.c:679
 data_alloc+0xbe/0x2c0 kernel/printk/printk_ringbuffer.c:1054
 prb_reserve+0x85e/0xb60 kernel/printk/printk_ringbuffer.c:1669
 vprintk_store+0x558/0x870 kernel/printk/printk.c:2326
 vprintk_emit+0x15e/0x680 kernel/printk/printk.c:2408
 vprintk_default+0x26/0x30 kernel/printk/printk.c:2447
 vprintk+0x75/0x80 kernel/printk/printk_safe.c:86
 _printk+0x7a/0xa0 kernel/printk/printk.c:2457
 __ext4_error_inode+0x2da/0x400 fs/ext4/super.c:861
 __ext4_mark_inode_dirty+0xbe/0x440 fs/ext4/inode.c:6015
 ext4_xattr_delete_inode+0x721/0x790 fs/ext4/xattr.c:3006
 ext4_evict_inode+0xa82/0xdd0 fs/ext4/inode.c:273
 evict+0x2f0/0x570 fs/inode.c:796
 iput_final fs/inode.c:1946 [inline]
 iput+0x42a/0x5b0 fs/inode.c:1972
 ext4_ext_migrate+0x8e3/0x9a0 fs/ext4/migrate.c:588
 __ext4_ioctl fs/ext4/ioctl.c:1401 [inline]
 ext4_ioctl+0x103f/0x2dd0 fs/ext4/ioctl.c:1619
 vfs_ioctl fs/ioctl.c:51 [inline]
 __do_sys_ioctl fs/ioctl.c:906 [inline]
 __se_sys_ioctl+0xc9/0x140 fs/ioctl.c:892
 __x64_sys_ioctl+0x43/0x50 fs/ioctl.c:892
 x64_sys_call+0x1690/0x2dc0 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

value changed: 0x00000000fffff07a -> 0x0a2937293731312d

Reported by Kernel Concurrency Sanitizer on:
CPU: 1 UID: 0 PID: 11066 Comm: syz.4.2189 Not tainted 6.12.0-syzkaller-09435-g2c22dc1ee3a1 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
==================================================================
EXT4-fs error (device loop4): ext4_xattr_delete_inode:3009: inode #18: comm syz.4.2189: mark inode dirty (error -117)
EXT4-fs warning (device loop4): ext4_evict_inode:276: xattr delete (err -117)