KCSAN: data-race in isolate_migratepages_block / isolate_migratepages

KCSAN: data-race in isolate_migratepages_block / isolate_migratepages_block (3)
Status: auto-closed as invalid on 2021/05/29 14:14
Reported-by: syzbot+2b92826e21d4cff38c09@syzkaller.appspotmail.com
First crash: 234d, last: 90d

similar bugs (2):
Kernel	Title	Repro	Cause bisect	Fix bisect	Count	Last	Reported	Patched	Status
upstream	KCSAN: data-race in isolate_migratepages_block / isolate_migratepages_block				1	549d	549d	0/22	auto-closed as invalid on 2020/04/01 04:50
upstream	KCSAN: data-race in isolate_migratepages_block / isolate_migratepages_block (2)				1	356d	356d	0/22	auto-closed as invalid on 2020/09/05 12:48

Sample crash report:

==================================================================
BUG: KCSAN: data-race in isolate_migratepages_block / isolate_migratepages_block

write to 0xffff88823fffad90 of 8 bytes by task 18878 on cpu 1:
 update_cached_migrate mm/compaction.c:434 [inline]
 isolate_migratepages_block+0x18b7/0x1a90 mm/compaction.c:1122
 isolate_migratepages mm/compaction.c:1892 [inline]
 compact_zone+0x1587/0x1da0 mm/compaction.c:2342
 compact_zone_order mm/compaction.c:2485 [inline]
 try_to_compact_pages+0x317/0x840 mm/compaction.c:2543
 __alloc_pages_direct_compact+0x65/0x320 mm/page_alloc.c:4155
 __alloc_pages_slowpath+0x29a/0xb70 mm/page_alloc.c:4734
 __alloc_pages_nodemask+0x242/0x310 mm/page_alloc.c:5020
 alloc_pages_current+0x21d/0x310 mm/mempolicy.c:2277
 alloc_pages include/linux/gfp.h:561 [inline]
 __get_free_pages+0x8/0x30 mm/page_alloc.c:5044
 io_mem_alloc fs/io_uring.c:8063 [inline]
 io_allocate_scq_urings fs/io_uring.c:9410 [inline]
 io_uring_create+0x860/0x17d0 fs/io_uring.c:9548
 io_uring_setup fs/io_uring.c:9632 [inline]
 __do_sys_io_uring_setup fs/io_uring.c:9638 [inline]
 __se_sys_io_uring_setup fs/io_uring.c:9635 [inline]
 __x64_sys_io_uring_setup+0xe1/0x120 fs/io_uring.c:9635
 do_syscall_64+0x34/0x50 arch/x86/entry/common.c:46
 entry_SYSCALL_64_after_hwframe+0x44/0xae

read to 0xffff88823fffad90 of 8 bytes by task 18842 on cpu 0:
 update_cached_migrate mm/compaction.c:433 [inline]
 isolate_migratepages_block+0x188e/0x1a90 mm/compaction.c:1122
 isolate_migratepages mm/compaction.c:1892 [inline]
 compact_zone+0x1587/0x1da0 mm/compaction.c:2342
 compact_zone_order mm/compaction.c:2485 [inline]
 try_to_compact_pages+0x317/0x840 mm/compaction.c:2543
 __alloc_pages_direct_compact+0x65/0x320 mm/page_alloc.c:4155
 __alloc_pages_slowpath+0x29a/0xb70 mm/page_alloc.c:4734
 __alloc_pages_nodemask+0x242/0x310 mm/page_alloc.c:5020
 alloc_pages_current+0x21d/0x310 mm/mempolicy.c:2277
 alloc_pages include/linux/gfp.h:561 [inline]
 __get_free_pages+0x8/0x30 mm/page_alloc.c:5044
 io_mem_alloc fs/io_uring.c:8063 [inline]
 io_allocate_scq_urings fs/io_uring.c:9430 [inline]
 io_uring_create+0x991/0x17d0 fs/io_uring.c:9548
 io_uring_setup fs/io_uring.c:9632 [inline]
 __do_sys_io_uring_setup fs/io_uring.c:9638 [inline]
 __se_sys_io_uring_setup fs/io_uring.c:9635 [inline]
 __x64_sys_io_uring_setup+0xe1/0x120 fs/io_uring.c:9635
 do_syscall_64+0x34/0x50 arch/x86/entry/common.c:46
 entry_SYSCALL_64_after_hwframe+0x44/0xae

Reported by Kernel Concurrency Sanitizer on:
CPU: 0 PID: 18842 Comm: syz-executor.1 Not tainted 5.12.0-rc8-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
==================================================================

Crashes (161):
Manager	Time	Kernel	Commit	Syzkaller	Config	Log	Report	VM info	Title
ci2-upstream-kcsan-gce	2021/04/24 14:14	upstream	8db5efb83fa9	17f0b706	.config	log	report	info	KCSAN: data-race in isolate_migratepages_block / isolate_migratepages_block
ci2-upstream-kcsan-gce	2021/04/14 15:15	upstream	50987beca096	3134b37f	.config	log	report	info	KCSAN: data-race in isolate_migratepages_block / isolate_migratepages_block
ci2-upstream-kcsan-gce	2021/04/14 05:54	upstream	eebe426d32e1	a184b83e	.config	log	report	info	KCSAN: data-race in isolate_migratepages_block / isolate_migratepages_block
ci2-upstream-kcsan-gce	2021/04/13 02:43	upstream	89698becf06d	6a81331a	.config	log	report	info	KCSAN: data-race in isolate_migratepages_block / isolate_migratepages_block
ci2-upstream-kcsan-gce	2021/04/12 11:48	upstream	d434405aaab7	6a81331a	.config	log	report	info	KCSAN: data-race in isolate_migratepages_block / isolate_migratepages_block
ci2-upstream-kcsan-gce	2021/04/11 19:36	upstream	7d900724913c	6a81331a	.config	log	report	info	KCSAN: data-race in isolate_migratepages_block / isolate_migratepages_block
ci2-upstream-kcsan-gce	2021/04/10 00:43	upstream	4e04e7513b0f	6a81331a	.config	log	report	info	KCSAN: data-race in isolate_migratepages_block / isolate_migratepages_block
ci2-upstream-kcsan-gce	2021/04/08 21:47	upstream	3fb4f979b4fa	6a81331a	.config	log	report	info	KCSAN: data-race in isolate_migratepages_block / isolate_migratepages_block
ci2-upstream-kcsan-gce	2021/04/08 10:18	upstream	454859c552da	6a81331a	.config	log	report	info	KCSAN: data-race in isolate_migratepages_block / isolate_migratepages_block
ci2-upstream-kcsan-gce	2021/04/07 19:13	upstream	3a22981230f9	6a81331a	.config	log	report	info	KCSAN: data-race in isolate_migratepages_block / isolate_migratepages_block
ci2-upstream-kcsan-gce	2021/04/07 01:34	upstream	2d743660786e	6a81331a	.config	log	report	info	KCSAN: data-race in isolate_migratepages_block / isolate_migratepages_block
ci2-upstream-kcsan-gce	2021/04/06 18:04	upstream	0a50438c8436	6a81331a	.config	log	report	info	KCSAN: data-race in isolate_migratepages_block / isolate_migratepages_block
ci2-upstream-kcsan-gce	2021/04/05 01:23	upstream	e49d033bddf5	6a81331a	.config	log	report	info	KCSAN: data-race in isolate_migratepages_block / isolate_migratepages_block
ci2-upstream-kcsan-gce	2021/04/04 13:44	upstream	2023a53bdf41	6a81331a	.config	log	report	info	KCSAN: data-race in isolate_migratepages_block / isolate_migratepages_block
ci2-upstream-kcsan-gce	2021/04/02 00:14	upstream	ffd9fb546d49	6a81331a	.config	log	report	info	KCSAN: data-race in isolate_migratepages_block / isolate_migratepages_block
ci2-upstream-kcsan-gce	2021/03/31 07:02	upstream	5e46d1b78a03	6a81331a	.config	log	report	info	KCSAN: data-race in isolate_migratepages_block / isolate_migratepages_block
ci2-upstream-kcsan-gce	2021/03/30 18:03	upstream	2bb25b3a748a	6a81331a	.config	log	report	info	KCSAN: data-race in isolate_migratepages_block / isolate_migratepages_block
ci2-upstream-kcsan-gce	2021/03/29 21:04	upstream	1e43c377a79f	6a81331a	.config	log	report	info	KCSAN: data-race in isolate_migratepages_block / isolate_migratepages_block
ci2-upstream-kcsan-gce	2021/03/28 20:54	upstream	36a14638f7c0	a8529b82	.config	log	report	info	KCSAN: data-race in isolate_migratepages_block / isolate_migratepages_block
ci2-upstream-kcsan-gce	2021/03/27 00:42	upstream	0f4498cef9f5	a8529b82	.config	log	report	info	KCSAN: data-race in isolate_migratepages_block / isolate_migratepages_block
ci2-upstream-kcsan-gce	2021/03/25 22:27	upstream	002322402daf	6a383ecf	.config	log	report	info	KCSAN: data-race in isolate_migratepages_block / isolate_migratepages_block
ci2-upstream-kcsan-gce	2021/03/25 16:53	upstream	e138138003eb	6a383ecf	.config	log	report	info	KCSAN: data-race in isolate_migratepages_block / isolate_migratepages_block
ci2-upstream-kcsan-gce	2021/03/24 22:29	upstream	4ee998b0ef8b	607e3baf	.config	log	report	info	KCSAN: data-race in isolate_migratepages_block / isolate_migratepages_block
ci2-upstream-kcsan-gce	2021/03/24 17:06	upstream	7acac4b3196c	607e3baf	.config	log	report	info	KCSAN: data-race in isolate_migratepages_block / isolate_migratepages_block
ci2-upstream-kcsan-gce	2021/03/23 18:08	upstream	84196390620a	e613994b	.config	log	report	info	KCSAN: data-race in isolate_migratepages_block / isolate_migratepages_block
ci2-upstream-kcsan-gce	2021/03/22 18:20	upstream	0d02ec6b3136	8092f30d	.config	log	report	info	KCSAN: data-race in isolate_migratepages_block / isolate_migratepages_block
ci2-upstream-kcsan-gce	2021/03/22 03:47	upstream	5ee96fa9dd78	bea32f74	.config	log	report	info	KCSAN: data-race in isolate_migratepages_block / isolate_migratepages_block
ci2-upstream-kcsan-gce	2021/03/22 00:47	upstream	5ee96fa9dd78	4c9a64da	.config	log	report	info	KCSAN: data-race in isolate_migratepages_block / isolate_migratepages_block
ci2-upstream-kcsan-gce	2021/03/20 21:39	upstream	812da4d39463	17810eae	.config	log	report	info	KCSAN: data-race in isolate_migratepages_block / isolate_migratepages_block
ci2-upstream-kcsan-gce	2021/03/19 22:00	upstream	8b12a62a4e3e	3d01c4de	.config	log	report	info	KCSAN: data-race in isolate_migratepages_block / isolate_migratepages_block
ci2-upstream-kcsan-gce	2021/03/19 12:13	upstream	8b12a62a4e3e	2af9d324	.config	log	report	info	KCSAN: data-race in isolate_migratepages_block / isolate_migratepages_block
ci2-upstream-kcsan-gce	2021/03/18 20:39	upstream	bf152b0b41dc	380dcc3e	.config	log	report	info	KCSAN: data-race in isolate_migratepages_block / isolate_migratepages_block
ci2-upstream-kcsan-gce	2021/03/18 01:06	upstream	6417f03132a6	fdb2bb2c	.config	log	report	info	KCSAN: data-race in isolate_migratepages_block / isolate_migratepages_block
ci2-upstream-kcsan-gce	2021/03/15 16:02	upstream	1e28eed17697	fdb2bb2c	.config	log	report	info	KCSAN: data-race in isolate_migratepages_block / isolate_migratepages_block
ci2-upstream-kcsan-gce	2021/03/15 12:45	upstream	1e28eed17697	cc1cff8f	.config	log	report	info	KCSAN: data-race in isolate_migratepages_block / isolate_migratepages_block
ci2-upstream-kcsan-gce	2021/03/14 22:15	upstream	75013c6c52d8	cc1cff8f	.config	log	report	info	KCSAN: data-race in isolate_migratepages_block / isolate_migratepages_block
ci2-upstream-kcsan-gce	2021/03/14 08:00	upstream	88fe49249c99	4a003785	.config	log	report	info	KCSAN: data-race in isolate_migratepages_block / isolate_migratepages_block
ci2-upstream-kcsan-gce	2021/03/13 01:10	upstream	f296bfd5cd04	429d8a6b	.config	log	report	info	KCSAN: data-race in isolate_migratepages_block / isolate_migratepages_block
ci2-upstream-kcsan-gce	2021/03/11 04:38	upstream	a74e6a014c9d	c2ca1f2a	.config	log	report	info	KCSAN: data-race in isolate_migratepages_block / isolate_migratepages_block
ci2-upstream-kcsan-gce	2021/03/10 19:17	upstream	05a59d79793d	764067f3	.config	log	report	info	KCSAN: data-race in isolate_migratepages_block / isolate_migratepages_block
ci2-upstream-kcsan-gce	2021/03/09 16:43	upstream	144c79ef3353	26967e35	.config	log	report	info	KCSAN: data-race in isolate_migratepages_block / isolate_migratepages_block
ci2-upstream-kcsan-gce	2021/03/07 22:16	upstream	144c79ef3353	09fbf400	.config	log	report	info	KCSAN: data-race in isolate_migratepages_block / isolate_migratepages_block
ci2-upstream-kcsan-gce	2021/01/17 14:04	upstream	0da0a8a0a0e1	813be542	.config	log	report	info
ci2-upstream-kcsan-gce	2020/12/07 09:01	upstream	0477e9288185	f80ce148	.config	log	report	info
ci2-upstream-kcsan-gce	2020/12/02 05:28	upstream	509a15421674	c42a35e9	.config	log	report	info