KCSAN: data-race in __add_to_page_cache_locked / invalidate_inode_pages2

KCSAN: data-race in __add_to_page_cache_locked / invalidate_inode_pages2_range (3)
Status: moderation: reported on 2020/09/14 09:29
Reported-by: syzbot+09166b76b415b8869254@syzkaller.appspotmail.com
First crash: 256d, last: 11d

similar bugs (2):
Kernel	Title	Repro	Cause bisect	Fix bisect	Count	Last	Reported	Patched	Status
upstream	KCSAN: data-race in __add_to_page_cache_locked / invalidate_inode_pages2_range (2)				36	265d	462d	0/21	closed as invalid on 2020/06/18 14:24
upstream	KCSAN: data-race in __add_to_page_cache_locked / invalidate_inode_pages2_range				1	495d	495d	0/21	closed as invalid on 2019/11/19 13:44

Sample crash report:

==================================================================
BUG: KCSAN: data-race in __add_to_page_cache_locked / invalidate_inode_pages2_range

write to 0xffff88800a5cd878 of 8 bytes by task 11180 on cpu 1:
 __add_to_page_cache_locked+0x3ad/0x6e0 mm/filemap.c:892
 add_to_page_cache_lru+0xa0/0x1b0 mm/filemap.c:945
 page_cache_ra_unbounded+0x272/0x4c0 mm/readahead.c:222
 ondemand_readahead+0x560/0x780 mm/readahead.c:267
 page_cache_async_ra+0x1aa/0x1d0 mm/readahead.c:607
 page_cache_async_readahead include/linux/pagemap.h:862 [inline]
 do_async_mmap_readahead+0x222/0x250 mm/filemap.c:2766
 filemap_fault+0x100/0xc30 mm/filemap.c:2821
 ext4_filemap_fault+0x4b/0x60 fs/ext4/inode.c:6194
 __do_fault mm/memory.c:3637 [inline]
 do_cow_fault+0x1e5/0x810 mm/memory.c:3970
 do_fault mm/memory.c:4071 [inline]
 handle_pte_fault mm/memory.c:4320 [inline]
 __handle_mm_fault mm/memory.c:4455 [inline]
 handle_mm_fault+0x12d1/0x18a0 mm/memory.c:4553
 faultin_page mm/gup.c:851 [inline]
 __get_user_pages+0xa47/0x1000 mm/gup.c:1070
 populate_vma_page_range mm/gup.c:1403 [inline]
 __mm_populate+0x24d/0x380 mm/gup.c:1451
 mm_populate include/linux/mm.h:2557 [inline]
 vm_mmap_pgoff+0x14c/0x1d0 mm/util.c:524
 ksys_mmap_pgoff+0x2a8/0x380 mm/mmap.c:1634
 do_syscall_64+0x39/0x80 arch/x86/entry/common.c:46
 entry_SYSCALL_64_after_hwframe+0x44/0xae

read to 0xffff88800a5cd878 of 8 bytes by task 11166 on cpu 0:
 invalidate_inode_pages2_range+0x40/0x790 mm/truncate.c:723
 __iomap_dio_rw+0x5c2/0xa30 fs/iomap/direct-io.c:535
 iomap_dio_rw+0x30/0x70 fs/iomap/direct-io.c:641
 ext4_dio_write_iter fs/ext4/file.c:551 [inline]
 ext4_file_write_iter+0xeaa/0x10b0 fs/ext4/file.c:661
 call_write_iter include/linux/fs.h:1977 [inline]
 do_iter_readv_writev+0x2cb/0x360 fs/read_write.c:740
 do_iter_write+0x112/0x4c0 fs/read_write.c:866
 vfs_iter_write+0x4c/0x70 fs/read_write.c:907
 iter_file_splice_write+0x40a/0x750 fs/splice.c:689
 do_splice_from fs/splice.c:767 [inline]
 direct_splice_actor+0x80/0xa0 fs/splice.c:936
 splice_direct_to_actor+0x345/0x650 fs/splice.c:891
 do_splice_direct+0xf5/0x170 fs/splice.c:979
 do_sendfile+0x7a6/0xe20 fs/read_write.c:1260
 __do_sys_sendfile64 fs/read_write.c:1325 [inline]
 __se_sys_sendfile64 fs/read_write.c:1311 [inline]
 __x64_sys_sendfile64+0xf2/0x130 fs/read_write.c:1311
 do_syscall_64+0x39/0x80 arch/x86/entry/common.c:46
 entry_SYSCALL_64_after_hwframe+0x44/0xae

Reported by Kernel Concurrency Sanitizer on:
CPU: 0 PID: 11166 Comm: syz-executor.1 Not tainted 5.11.0-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
==================================================================

Crashes (154):
Manager	Time	Kernel	Commit	Syzkaller	Config	Log	Report	VM info	Title
ci2-upstream-kcsan-gce	2021/02/24 16:45	upstream	c03c21ba	fcc6d71b	.config	log	report	info	KCSAN: data-race in __add_to_page_cache_locked / invalidate_inode_pages2_range
ci2-upstream-kcsan-gce	2021/02/14 16:50	upstream	358fecee	98682e5e	.config	log	report	info	KCSAN: data-race in __add_to_page_cache_locked / invalidate_inode_pages2_range
ci2-upstream-kcsan-gce	2021/02/13 08:55	upstream	c6d8570e	98682e5e	.config	log	report	info	KCSAN: data-race in __add_to_page_cache_locked / invalidate_inode_pages2_range
ci2-upstream-kcsan-gce	2021/02/11 01:39	upstream	291009f6	a52ee10a	.config	log	report	info	KCSAN: data-race in __add_to_page_cache_locked / invalidate_inode_pages2_range
ci2-upstream-kcsan-gce	2021/02/07 01:40	upstream	964d069f	0655e081	.config	log	report	info	KCSAN: data-race in __add_to_page_cache_locked / invalidate_inode_pages2_range
ci2-upstream-kcsan-gce	2021/02/06 12:00	upstream	1e0d27fc	0655e081	.config	log	report	info	KCSAN: data-race in __add_to_page_cache_locked / invalidate_inode_pages2_range
ci2-upstream-kcsan-gce	2021/02/05 02:57	upstream	5c279c4c	23a562df	.config	log	report	info	KCSAN: data-race in __add_to_page_cache_locked / invalidate_inode_pages2_range
ci2-upstream-kcsan-gce	2021/02/04 13:16	upstream	61556703	42b90a7c	.config	log	report	info	KCSAN: data-race in __add_to_page_cache_locked / invalidate_inode_pages2_range
ci2-upstream-kcsan-gce	2021/02/01 01:47	upstream	1048ba83	fc9fd31e	.config	log	report	info	KCSAN: data-race in __add_to_page_cache_locked / invalidate_inode_pages2_range
ci2-upstream-kcsan-gce	2021/01/31 13:12	upstream	6642d600	fc9fd31e	.config	log	report	info	KCSAN: data-race in __add_to_page_cache_locked / invalidate_inode_pages2_range
ci2-upstream-kcsan-gce	2021/01/30 23:41	upstream	8c947645	fc9fd31e	.config	log	report	info	KCSAN: data-race in __add_to_page_cache_locked / invalidate_inode_pages2_range
ci2-upstream-kcsan-gce	2021/01/29 19:47	upstream	bec4c296	fc9fd31e	.config	log	report	info	KCSAN: data-race in __add_to_page_cache_locked / invalidate_inode_pages2_range
ci2-upstream-kcsan-gce	2021/01/29 09:20	upstream	bec4c296	6593fd32	.config	log	report	info	KCSAN: data-race in __add_to_page_cache_locked / invalidate_inode_pages2_range
ci2-upstream-kcsan-gce	2021/01/28 18:48	upstream	76c057c8	7df34f59	.config	log	report	info	KCSAN: data-race in __add_to_page_cache_locked / invalidate_inode_pages2_range
ci2-upstream-kcsan-gce	2021/01/27 21:00	upstream	76c057c8	a57db36f	.config	log	report	info	KCSAN: data-race in __add_to_page_cache_locked / invalidate_inode_pages2_range
ci2-upstream-kcsan-gce	2021/01/27 18:41	upstream	2ab38c17	a57db36f	.config	log	report	info	KCSAN: data-race in __add_to_page_cache_locked / invalidate_inode_pages2_range
ci2-upstream-kcsan-gce	2021/01/27 08:13	upstream	2ab38c17	a0ebf917	.config	log	report	info	KCSAN: data-race in __add_to_page_cache_locked / invalidate_inode_pages2_range
ci2-upstream-kcsan-gce	2021/01/26 16:54	upstream	13391c60	55a7d4df	.config	log	report	info	KCSAN: data-race in __add_to_page_cache_locked / invalidate_inode_pages2_range
ci2-upstream-kcsan-gce	2021/01/26 12:27	upstream	13391c60	52e37319	.config	log	report	info	KCSAN: data-race in __add_to_page_cache_locked / invalidate_inode_pages2_range
ci2-upstream-kcsan-gce	2021/01/18 23:12	upstream	1e2a199f	63631df1	.config	log	report	info	KCSAN: data-race in __add_to_page_cache_locked / invalidate_inode_pages2_range
ci2-upstream-kcsan-gce	2021/01/16 21:20	upstream	54c6247d	65a7a854	.config	log	report	info
ci2-upstream-kcsan-gce	2021/01/15 01:58	upstream	14662050	468dbb55	.config	log	report	info
ci2-upstream-kcsan-gce	2021/01/13 23:54	upstream	65f0d241	269d24e8	.config	log	report	info
ci2-upstream-kcsan-gce	2021/01/13 12:58	upstream	e609571b	a945f0a3	.config	log	report	info
ci2-upstream-kcsan-gce	2021/01/11 11:25	upstream	7c53f6b6	2c1f2513	.config	log	report	info
ci2-upstream-kcsan-gce	2021/01/09 23:30	upstream	2ff90100	2c1f2513	.config	log	report	info
ci2-upstream-kcsan-gce	2021/01/09 10:46	upstream	996e435f	a6c52263	.config	log	report	info
ci2-upstream-kcsan-gce	2021/01/06 11:10	upstream	9f1abbe9	fff20c29	.config	log	report	info
ci2-upstream-kcsan-gce	2021/01/04 21:00	upstream	36bbbd0e	2a28ff1f	.config	log	report	info
ci2-upstream-kcsan-gce	2021/01/04 04:51	upstream	e71ba945	79264ae3	.config	log	report	info
ci2-upstream-kcsan-gce	2021/01/02 00:26	upstream	eda809ae	79264ae3	.config	log	report	info
ci2-upstream-kcsan-gce	2020/12/31 15:07	upstream	f6e1ea19	79264ae3	.config	log	report	info
ci2-upstream-kcsan-gce	2020/12/31 04:41	upstream	f6e1ea19	5cc121d6	.config	log	report	info
ci2-upstream-kcsan-gce	2020/12/30 22:27	upstream	f6e1ea19	ecb8c012	.config	log	report	info
ci2-upstream-kcsan-gce	2020/12/30 16:23	upstream	139711f0	ecb8c012	.config	log	report	info
ci2-upstream-kcsan-gce	2020/12/29 05:55	upstream	dea8dcf2	8259d56c	.config	log	report	info
ci2-upstream-kcsan-gce	2020/12/28 23:10	upstream	c76e02c5	8259d56c	.config	log	report	info
ci2-upstream-kcsan-gce	2020/12/27 14:25	upstream	f838f8d2	2242f77f	.config	log	report	info
ci2-upstream-kcsan-gce	2020/12/27 04:03	upstream	f838f8d2	821e0b09	.config	log	report	info
ci2-upstream-kcsan-gce	2020/12/25 22:31	upstream	5814bc2d	821e0b09	.config	log	report	info
ci2-upstream-kcsan-gce	2020/12/25 09:35	upstream	71c5f031	b982b3ea	.config	log	report	info
ci2-upstream-kcsan-gce	2020/12/21 09:32	upstream	e37b12e4	04201c06	.config	log	report	info
ci2-upstream-kcsan-gce	2020/12/18 12:29	upstream	a409ed15	04201c06	.config	log	report	info
ci2-upstream-kcsan-gce	2020/12/16 09:16	upstream	d01e7f10	649595c6	.config	log	report	info
ci2-upstream-kcsan-gce	2020/12/13 20:48	upstream	ec6f5e0e	8f160dd5	.config	log	report	info
ci2-upstream-kcsan-gce	2020/12/12 20:31	upstream	7b1b868e	bca53db9	.config	log	report	info
ci2-upstream-kcsan-gce	2020/09/14 06:53	upstream	84b13499	2d3cdd63	.config	log	report
ci2-upstream-kcsan-gce	2020/09/13 22:36	upstream	84b13499	2d3cdd63	.config	log	report
ci2-upstream-kcsan-gce	2020/06/24 01:44	upstream	3e08a952	bbad15ae	.config	log	report