EXT4-fs error (device loop1): ext4_mb_generate_buddy:1098: group 0, 
==================================================================
BUG: KCSAN: data-race in data_push_tail / number

write to 0xffffffff86f16848 of 1 bytes by task 6965 on cpu 1:
 number+0x3eb/0xa90 lib/vsprintf.c:527
 vsnprintf+0xa44/0xe20 lib/vsprintf.c:2862
 va_format lib/vsprintf.c:1681 [inline]
 pointer+0x8a1/0xd10 lib/vsprintf.c:2427
 vsnprintf+0x861/0xe20 lib/vsprintf.c:2800
 vscnprintf+0x42/0x80 lib/vsprintf.c:2902
 printk_sprint+0x30/0x2d0 kernel/printk/printk.c:2137
 vprintk_store+0x56f/0x800 kernel/printk/printk.c:2251
 vprintk_emit+0xd0/0x430 kernel/printk/printk.c:2297
 vprintk_default+0x26/0x30 kernel/printk/printk.c:2327
 vprintk+0x83/0x90 kernel/printk/printk_safe.c:50
 _printk+0x7a/0xa0 kernel/printk/printk.c:2337
 __ext4_msg+0x18a/0x1a0 fs/ext4/super.c:937
 ext4_orphan_cleanup+0x387/0x9c0 fs/ext4/orphan.c:437
 __ext4_fill_super fs/ext4/super.c:5509 [inline]
 ext4_fill_super+0x412f/0x43f0 fs/ext4/super.c:5637
 get_tree_bdev+0x2b1/0x3a0 fs/super.c:1303
 ext4_get_tree+0x1c/0x20 fs/ext4/super.c:5668
 vfs_get_tree+0x51/0x190 fs/super.c:1510
 do_new_mount+0x200/0x650 fs/namespace.c:3042
 path_mount+0x498/0xb40 fs/namespace.c:3372
 do_mount fs/namespace.c:3385 [inline]
 __do_sys_mount fs/namespace.c:3594 [inline]
 __se_sys_mount+0x27f/0x2d0 fs/namespace.c:3571
 __x64_sys_mount+0x67/0x80 fs/namespace.c:3571
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x63/0xcd

read to 0xffffffff86f16848 of 8 bytes by task 6964 on cpu 0:
 data_make_reusable kernel/printk/printk_ringbuffer.c:590 [inline]
 data_push_tail+0x102/0x430 kernel/printk/printk_ringbuffer.c:675
 data_realloc kernel/printk/printk_ringbuffer.c:1135 [inline]
 prb_reserve_in_last+0x766/0xc30 kernel/printk/printk_ringbuffer.c:1424
 vprintk_store+0x45a/0x800 kernel/printk/printk.c:2218
 vprintk_emit+0xd0/0x430 kernel/printk/printk.c:2297
 vprintk_default+0x26/0x30 kernel/printk/printk.c:2327
 vprintk+0x83/0x90 kernel/printk/printk_safe.c:50
 _printk+0x7a/0xa0 kernel/printk/printk.c:2337
 __ext4_grp_locked_error+0x5ab/0x790 fs/ext4/super.c:1010
 ext4_mb_generate_buddy+0x471/0x500 fs/ext4/mballoc.c:1095
 ext4_mb_init_cache+0xbe7/0xf70 fs/ext4/mballoc.c:1261
 ext4_mb_init_group+0x2fe/0x650 fs/ext4/mballoc.c:1413
 ext4_mb_load_buddy_gfp+0x940/0x10e0 fs/ext4/mballoc.c:1462
 ext4_mb_clear_bb fs/ext4/mballoc.c:5974 [inline]
 ext4_free_blocks+0xc05/0x1ad0 fs/ext4/mballoc.c:6173
 ext4_remove_blocks fs/ext4/extents.c:2545 [inline]
 ext4_ext_rm_leaf fs/ext4/extents.c:2710 [inline]
 ext4_ext_remove_space+0x16ba/0x2c80 fs/ext4/extents.c:2958
 ext4_ext_truncate+0x113/0x1a0 fs/ext4/extents.c:4416
 ext4_truncate+0x76f/0xb30 fs/ext4/inode.c:4342
 ext4_evict_inode+0xa8f/0xef0 fs/ext4/inode.c:286
 evict+0x1aa/0x410 fs/inode.c:665
 iput_final fs/inode.c:1748 [inline]
 iput+0x42c/0x5b0 fs/inode.c:1774
 ext4_process_orphan+0x1a9/0x1c0 fs/ext4/orphan.c:360
 ext4_orphan_cleanup+0x66c/0x9c0 fs/ext4/orphan.c:474
 __ext4_fill_super fs/ext4/super.c:5509 [inline]
 ext4_fill_super+0x412f/0x43f0 fs/ext4/super.c:5637
 get_tree_bdev+0x2b1/0x3a0 fs/super.c:1303
 ext4_get_tree+0x1c/0x20 fs/ext4/super.c:5668
 vfs_get_tree+0x51/0x190 fs/super.c:1510
 do_new_mount+0x200/0x650 fs/namespace.c:3042
 path_mount+0x498/0xb40 fs/namespace.c:3372
 do_mount fs/namespace.c:3385 [inline]
 __do_sys_mount fs/namespace.c:3594 [inline]
 __se_sys_mount+0x27f/0x2d0 fs/namespace.c:3571
 __x64_sys_mount+0x67/0x80 fs/namespace.c:3571
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x63/0xcd

value changed: 0x000000010001a395 -> 0x0000000a37313731

Reported by Kernel Concurrency Sanitizer on:
CPU: 0 PID: 6964 Comm: syz-executor.1 Not tainted 6.3.0-rc7-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/30/2023
==================================================================
block bitmap and bg descriptor inconsistent: 32 vs 41 free clusters
EXT4-fs (loop1): Remounting filesystem read-only
EXT4-fs (loop1): 1 orphan inode deleted
syz-executor.1 (6964) used greatest stack depth: 8640 bytes left