KCSAN: data-race in delete_from_page_cache_batch / page_address_in

KCSAN: data-race in delete_from_page_cache_batch / page_address_in_vma (4)
Status: auto-closed as invalid on 2021/03/12 12:46
Reported-by: syzbot+@syzkaller.appspotmail.com
First crash: 226d, last: 168d

similar bugs (4):
Kernel	Title	Count	Last	Reported	Patched	Status
upstream	KCSAN: data-race in delete_from_page_cache_batch / page_address_in_vma (2)	1	357d	357d	0/22	auto-closed as invalid on 2020/09/03 19:58
upstream	KCSAN: data-race in delete_from_page_cache_batch / page_address_in_vma (3)	1	302d	302d	0/22	auto-closed as invalid on 2020/10/29 03:12
upstream	KCSAN: data-race in delete_from_page_cache_batch / page_address_in_vma	1	435d	435d	0/22	closed as invalid on 2020/06/18 14:13
upstream	KCSAN: data-race in delete_from_page_cache_batch / page_address_in_vma (5)	3	60d	121d	0/22	auto-closed as invalid on 2021/06/28 10:29

Sample crash report:

==================================================================
BUG: KCSAN: data-race in delete_from_page_cache_batch / page_address_in_vma

write to 0xffffea0004b7b158 of 8 bytes by task 10484 on cpu 1:
 page_cache_delete_batch mm/filemap.c:327 [inline]
 delete_from_page_cache_batch+0x37b/0x820 mm/filemap.c:358
 truncate_inode_pages_range+0x482/0x10e0 mm/truncate.c:366
 truncate_inode_pages mm/truncate.c:476 [inline]
 truncate_pagecache+0x4f/0x70 mm/truncate.c:845
 ext4_setattr+0xae3/0xf60 fs/ext4/inode.c:5500
 notify_change+0x86d/0xa60 fs/attr.c:336
 do_truncate+0xe0/0x120 fs/open.c:64
 handle_truncate fs/namei.c:2912 [inline]
 do_open fs/namei.c:3258 [inline]
 path_openat+0x1a30/0x20a0 fs/namei.c:3371
 do_filp_open+0xbd/0x1d0 fs/namei.c:3398
 do_sys_openat2+0xa3/0x250 fs/open.c:1172
 do_sys_open fs/open.c:1188 [inline]
 __do_sys_openat fs/open.c:1204 [inline]
 __se_sys_openat fs/open.c:1199 [inline]
 __x64_sys_openat+0xef/0x110 fs/open.c:1199
 do_syscall_64+0x39/0x80 arch/x86/entry/common.c:46
 entry_SYSCALL_64_after_hwframe+0x44/0xa9

read to 0xffffea0004b7b158 of 8 bytes by task 10479 on cpu 0:
 PageAnon include/linux/page-flags.h:484 [inline]
 page_address_in_vma+0x4c/0x2d0 mm/rmap.c:704
 new_page+0x4b/0x1e0 mm/mempolicy.c:1221
 unmap_and_move+0x113/0x690 mm/migrate.c:1190
 migrate_pages+0x2e7/0xf10 mm/migrate.c:1460
 do_mbind+0xe47/0x1030 mm/mempolicy.c:1347
 kernel_mbind mm/mempolicy.c:1468 [inline]
 __do_sys_mbind mm/mempolicy.c:1475 [inline]
 __se_sys_mbind mm/mempolicy.c:1471 [inline]
 __x64_sys_mbind+0x142/0x170 mm/mempolicy.c:1471
 do_syscall_64+0x39/0x80 arch/x86/entry/common.c:46
 entry_SYSCALL_64_after_hwframe+0x44/0xa9

Reported by Kernel Concurrency Sanitizer on:
CPU: 0 PID: 10479 Comm: syz-executor.2 Not tainted 5.11.0-rc6-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
==================================================================

Crashes (4):
Manager	Time	Kernel	Commit	Syzkaller	Config	Log	Report	VM info	Title
ci2-upstream-kcsan-gce	2021/02/05 12:41	upstream	dd86e7fa07a3	23a562df	.config	log	report	info	KCSAN: data-race in delete_from_page_cache_batch / page_address_in_vma
ci2-upstream-kcsan-gce	2021/01/14 21:19	upstream	65f0d2414b70	468dbb55	.config	log	report	info
ci2-upstream-kcsan-gce	2020/12/25 11:52	upstream	71c5f03154ac	b982b3ea	.config	log	report	info
ci2-upstream-kcsan-gce	2020/12/09 09:09	upstream	a68a0262abda	99917735	.config	log	report	info