KMSAN: uninit-value in mpol_rebind

similar bugs (1):
Kernel	Title	Repro	Cause bisect	Fix bisect	Count	Last	Reported	Patched	Status
upstream	KMSAN: uninit-value in mpol_rebind_task	C			17	1455d	1525d	0/24	closed as invalid on 2021/12/14 11:42

similar bugs (1):

upstream

KMSAN: uninit-value in mpol_rebind_task

1455d

1525d

0/24

closed as invalid on 2021/12/14 11:42

Last patch testing requests:
Created	Duration	User	Patch	Repo	Result
2022/05/12 03:49	20m	wanngchenng@gmail.com	patch	https://github.com/google/kmsan.git master	OK
2022/04/28 03:45	17m	wanngchenng@gmail.com		https://github.com/google/kmsan.git master	report log

Last patch testing requests:

Created

Duration

User

Patch

Repo

Result

2022/05/12 03:49

20m

wanngchenng@gmail.com

patch

https://github.com/google/kmsan.git master

2022/04/28 03:45

17m

wanngchenng@gmail.com

https://github.com/google/kmsan.git master

report log

=====================================================
BUG: KMSAN: uninit-value in mpol_rebind_policy mm/mempolicy.c:352 [inline]
BUG: KMSAN: uninit-value in mpol_rebind_task+0x2ac/0x2c0 mm/mempolicy.c:368
 mpol_rebind_policy mm/mempolicy.c:352 [inline]
 mpol_rebind_task+0x2ac/0x2c0 mm/mempolicy.c:368
 cpuset_change_task_nodemask kernel/cgroup/cpuset.c:1711 [inline]
 cpuset_attach+0x787/0x15e0 kernel/cgroup/cpuset.c:2278
 cgroup_migrate_execute+0x1023/0x1d20 kernel/cgroup/cgroup.c:2515
 cgroup_migrate kernel/cgroup/cgroup.c:2771 [inline]
 cgroup_attach_task+0x540/0x8b0 kernel/cgroup/cgroup.c:2804
 __cgroup1_procs_write+0x5cc/0x7a0 kernel/cgroup/cgroup-v1.c:520
 cgroup1_tasks_write+0x94/0xb0 kernel/cgroup/cgroup-v1.c:539
 cgroup_file_write+0x4c2/0x9e0 kernel/cgroup/cgroup.c:3852
 kernfs_fop_write_iter+0x66a/0x9f0 fs/kernfs/file.c:296
 call_write_iter include/linux/fs.h:2162 [inline]
 new_sync_write fs/read_write.c:503 [inline]
 vfs_write+0x1318/0x2030 fs/read_write.c:590
 ksys_write+0x28b/0x510 fs/read_write.c:643
 __do_sys_write fs/read_write.c:655 [inline]
 __se_sys_write fs/read_write.c:652 [inline]
 __x64_sys_write+0xdb/0x120 fs/read_write.c:652
 do_syscall_x64 arch/x86/entry/common.c:51 [inline]
 do_syscall_64+0x54/0xd0 arch/x86/entry/common.c:82
 entry_SYSCALL_64_after_hwframe+0x44/0xae

Uninit was created at:
 slab_post_alloc_hook mm/slab.h:524 [inline]
 slab_alloc_node mm/slub.c:3251 [inline]
 slab_alloc mm/slub.c:3259 [inline]
 kmem_cache_alloc+0x902/0x11c0 mm/slub.c:3264
 mpol_new mm/mempolicy.c:293 [inline]
 do_set_mempolicy+0x421/0xb70 mm/mempolicy.c:853
 kernel_set_mempolicy mm/mempolicy.c:1504 [inline]
 __do_sys_set_mempolicy mm/mempolicy.c:1510 [inline]
 __se_sys_set_mempolicy+0x44c/0xb60 mm/mempolicy.c:1507
 __x64_sys_set_mempolicy+0xd8/0x110 mm/mempolicy.c:1507
 do_syscall_x64 arch/x86/entry/common.c:51 [inline]
 do_syscall_64+0x54/0xd0 arch/x86/entry/common.c:82
 entry_SYSCALL_64_after_hwframe+0x44/0xae

CPU: 1 PID: 3479 Comm: syz-executor124 Not tainted 5.16.0-rc5-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
=====================================================

Crashes (7):
Manager	Time	Kernel	Commit	Syzkaller	Config	Log	Report	Syz repro	C repro	VM info	Title
ci-upstream-kmsan-gce	2021/12/25 01:39	https://github.com/google/kmsan.git master	81c325bbf94e	6caa12e4	.config	console log	report	syz	C		KMSAN: uninit-value in mpol_rebind_task
ci-upstream-kmsan-gce	2022/06/13 17:11	https://github.com/google/kmsan.git master	2f3064574275	0d5abf15	.config	console log	report			info	KMSAN: uninit-value in mpol_rebind_task
ci-upstream-kmsan-gce	2022/06/13 16:30	https://github.com/google/kmsan.git master	2f3064574275	0d5abf15	.config	console log	report			info	KMSAN: uninit-value in mpol_rebind_task
ci-upstream-kmsan-gce	2022/06/13 13:41	https://github.com/google/kmsan.git master	2f3064574275	0d5abf15	.config	console log	report			info	KMSAN: uninit-value in mpol_rebind_task
ci-upstream-kmsan-gce	2022/06/13 12:02	https://github.com/google/kmsan.git master	2f3064574275	0d5abf15	.config	console log	report			info	KMSAN: uninit-value in mpol_rebind_task
ci-upstream-kmsan-gce	2022/04/12 01:56	https://github.com/google/kmsan.git master	33d9269ef6e0	af01ee7d	.config	console log	report			info	KMSAN: uninit-value in mpol_rebind_task
ci-upstream-kmsan-gce	2021/12/25 00:13	https://github.com/google/kmsan.git master	81c325bbf94e	6caa12e4	.config	console log	report			info	KMSAN: uninit-value in mpol_rebind_task

Crashes (7):