KCSAN: data-race in filemap_read / truncate

Kernel	Title	Rank 🛈	Count	Last	Reported	Patched	Status
upstream	KCSAN: data-race in filemap_read / truncate_setsize (3) fs	6	2	1728d	1739d	0/29	auto-closed as invalid on 2021/12/23 02:33
upstream	KCSAN: data-race in filemap_read / truncate_setsize fs	6	1	1941d	1941d	0/29	auto-closed as invalid on 2021/05/24 01:14
upstream	KCSAN: data-race in filemap_read / truncate_setsize (5) fs	6	2	1526d	1558d	0/29	auto-closed as invalid on 2022/07/13 18:41
upstream	KCSAN: data-race in filemap_read / truncate_setsize (2) fs	6	1	1789d	1789d	0/29	auto-closed as invalid on 2021/10/23 13:44
upstream	KCSAN: data-race in filemap_read / truncate_setsize (7) exfat	6	2	1159d	1170d	0/29	auto-obsoleted due to no activity on 2023/07/14 20:15
upstream	KCSAN: data-race in filemap_read / truncate_setsize (4) fs	6	1	1611d	1611d	0/29	auto-closed as invalid on 2022/04/19 18:12

================================================================== BUG: KCSAN: data-race in filemap_read / truncate_setsize read-write to 0xffff88810a98a5e0 of 8 bytes by task 9041 on cpu 1: i_size_write include/linux/fs.h:888 [inline] truncate_setsize+0x21/0xb0 mm/truncate.c:765 simple_setattr+0x8b/0xc0 fs/libfs.c:536 notify_change+0x8c3/0x930 fs/attr.c:482 do_truncate+0x116/0x150 fs/open.c:66 handle_truncate fs/namei.c:3219 [inline] do_open fs/namei.c:3564 [inline] path_openat+0x1984/0x1d00 fs/namei.c:3715 do_filp_open+0xf6/0x200 fs/namei.c:3742 do_sys_openat2+0xb5/0x2a0 fs/open.c:1348 do_sys_open fs/open.c:1364 [inline] __do_sys_creat fs/open.c:1440 [inline] __se_sys_creat fs/open.c:1434 [inline] __x64_sys_creat+0x66/0x90 fs/open.c:1434 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 0xffff88810a98a5e0 of 8 bytes by task 9039 on cpu 0: i_size_read include/linux/fs.h:866 [inline] filemap_read+0x247/0x680 mm/filemap.c:2706 generic_file_read_iter+0x76/0x320 mm/filemap.c:2840 call_read_iter include/linux/fs.h:1845 [inline] generic_file_splice_read+0xe3/0x290 fs/splice.c:402 do_splice_to fs/splice.c:885 [inline] splice_direct_to_actor+0x25a/0x5f0 fs/splice.c:956 do_splice_direct+0x104/0x180 fs/splice.c:1065 do_sendfile+0x3b8/0x950 fs/read_write.c:1255 __do_sys_sendfile64 fs/read_write.c:1317 [inline] __se_sys_sendfile64 fs/read_write.c:1309 [inline] __x64_sys_sendfile64+0xbd/0x150 fs/read_write.c:1309 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: 0x00000000000c248c -> 0x0000000000000000 Reported by Kernel Concurrency Sanitizer on: CPU: 0 PID: 9039 Comm: syz-executor.1 Not tainted 6.3.0-rc4-syzkaller-00199-g7b50567bdcad #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/02/2023 ==================================================================