================================================================== BUG: KCSAN: data-race in __filemap_add_folio / filemap_write_and_wait_range read-write to 0xffff8881004c7c30 of 8 bytes by task 2961 on cpu 1: __filemap_add_folio+0x430/0x6f0 mm/filemap.c:910 filemap_add_folio+0x9c/0x1b0 mm/filemap.c:962 __filemap_get_folio+0x2f1/0x5b0 mm/filemap.c:1950 grow_dev_folio fs/buffer.c:1039 [inline] grow_buffers fs/buffer.c:1105 [inline] __getblk_slow fs/buffer.c:1131 [inline] bdev_getblk+0x173/0x3b0 fs/buffer.c:1431 __getblk include/linux/buffer_head.h:380 [inline] jbd2_journal_get_descriptor_buffer+0xcf/0x210 fs/jbd2/journal.c:968 jbd2_journal_commit_transaction+0xbed/0x3390 fs/jbd2/commit.c:610 kjournald2+0x20b/0x3c0 fs/jbd2/journal.c:201 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 read to 0xffff8881004c7c30 of 8 bytes by task 16937 on cpu 0: mapping_needs_writeback mm/filemap.c:625 [inline] filemap_write_and_wait_range+0x59/0x360 mm/filemap.c:674 filemap_write_and_wait include/linux/pagemap.h:68 [inline] sync_blockdev+0x35/0x50 block/bdev.c:218 dquot_quota_sync+0xdc/0x340 fs/quota/dquot.c:759 quota_sync_one+0x86/0xb0 fs/quota/quota.c:60 iterate_supers+0xa3/0x140 fs/super.c:934 quota_sync_all fs/quota/quota.c:69 [inline] __do_sys_quotactl fs/quota/quota.c:938 [inline] __se_sys_quotactl+0x2d0/0x660 fs/quota/quota.c:917 __x64_sys_quotactl+0x55/0x70 fs/quota/quota.c:917 x64_sys_call+0x826/0x2dc0 arch/x86/include/generated/asm/syscalls_64.h:180 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: 0x0000000000000243 -> 0x0000000000000244 Reported by Kernel Concurrency Sanitizer on: CPU: 0 UID: 0 PID: 16937 Comm: syz.0.4485 Tainted: G W 6.13.0-rc6-syzkaller #0 Tainted: [W]=WARN Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 ==================================================================