EXT4-fs error (device loop1): ext4_release_dquot:6871: comm kworker/u8:5: Failed to release dquot type 0 ================================================================== BUG: KCSAN: data-race in data_push_tail / number write to 0xffffffff88b4d71b of 1 bytes by task 6478 on cpu 0: number+0x7d0/0xa90 lib/vsprintf.c:564 vsnprintf+0xa44/0xe30 lib/vsprintf.c:2890 va_format lib/vsprintf.c:1683 [inline] pointer+0x8a1/0xd20 lib/vsprintf.c:2455 vsnprintf+0x861/0xe30 lib/vsprintf.c:2828 vscnprintf+0x42/0x90 lib/vsprintf.c:2930 printk_sprint+0x30/0x2d0 kernel/printk/printk.c:2165 vprintk_store+0x570/0x810 kernel/printk/printk.c:2279 vprintk_emit+0x10c/0x5e0 kernel/printk/printk.c:2329 vprintk_default+0x26/0x30 kernel/printk/printk.c:2363 vprintk+0x75/0x80 kernel/printk/printk_safe.c:45 _printk+0x7a/0xa0 kernel/printk/printk.c:2373 __ext4_msg+0x18e/0x1a0 fs/ext4/super.c:990 ext4_orphan_cleanup+0x8c8/0x9e0 fs/ext4/orphan.c:494 __ext4_fill_super fs/ext4/super.c:5541 [inline] ext4_fill_super+0x367a/0x39e0 fs/ext4/super.c:5664 get_tree_bdev+0x256/0x2e0 fs/super.c:1635 ext4_get_tree+0x1c/0x30 fs/ext4/super.c:5696 vfs_get_tree+0x56/0x1d0 fs/super.c:1800 do_new_mount+0x227/0x690 fs/namespace.c:3472 path_mount+0x49b/0xb30 fs/namespace.c:3799 do_mount fs/namespace.c:3812 [inline] __do_sys_mount fs/namespace.c:4020 [inline] __se_sys_mount+0x27c/0x2d0 fs/namespace.c:3997 __x64_sys_mount+0x67/0x80 fs/namespace.c:3997 x64_sys_call+0x203e/0x2d60 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 read to 0xffffffff88b4d718 of 8 bytes by task 64 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+0x53f/0x810 kernel/printk/printk.c:2269 vprintk_emit+0x10c/0x5e0 kernel/printk/printk.c:2329 vprintk_default+0x26/0x30 kernel/printk/printk.c:2363 vprintk+0x75/0x80 kernel/printk/printk_safe.c:45 _printk+0x7a/0xa0 kernel/printk/printk.c:2373 __ext4_error+0x221/0x310 fs/ext4/super.c:822 ext4_release_dquot+0x19d/0x1e0 fs/ext4/super.c:6869 quota_release_workfn+0x252/0x540 fs/quota/dquot.c:840 process_one_work kernel/workqueue.c:3231 [inline] process_scheduled_works+0x483/0x9a0 kernel/workqueue.c:3312 worker_thread+0x526/0x700 kernel/workqueue.c:3390 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: 0x00000000ffffe245 -> 0x00000000ff203a29 Reported by Kernel Concurrency Sanitizer on: CPU: 1 UID: 0 PID: 64 Comm: kworker/u8:5 Not tainted 6.11.0-rc2-syzkaller-00013-gd4560686726f #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/27/2024 Workqueue: events_unbound quota_release_workfn ==================================================================