WARNING in input_mt_init

WARNING in input_mt_init_slots
Status: upstream: reported C repro on 2021/01/10 23:30
Reported-by: syzbot+0122fa359a69694395d5@syzkaller.appspotmail.com
First crash: 294d, last: 19h15m

Cause bisection: the issue happens on the oldest tested release (bisect log)
Crash: WARNING in sysfs_warn_dup (log)
Repro: syz .config

Patch testing requests:
Created	Duration	User	Patch	Repo	Result
2021/02/02 12:12	14m	snovitoll@gmail.com		https://linux.googlesource.com/linux/kernel/git/torvalds/linux refs/changes/17/8017/1	OK
2021/02/02 12:04	5m	snovitoll@gmail.com		https://linux.googlesource.com/linux/kernel/git/torvalds/linux refs/changes/17/8017/1	error

Sample crash report:

------------[ cut here ]------------
WARNING: CPU: 1 PID: 6559 at mm/page_alloc.c:5350 current_gfp_context include/linux/sched/mm.h:166 [inline]
WARNING: CPU: 1 PID: 6559 at mm/page_alloc.c:5350 __alloc_pages+0x45d/0x500 mm/page_alloc.c:5362
Modules linked in:
CPU: 1 PID: 6559 Comm: syz-executor960 Not tainted 5.15.0-rc6-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:__alloc_pages+0x45d/0x500 mm/page_alloc.c:5350
Code: be c9 00 00 00 48 c7 c7 c0 1b 97 89 c6 05 5f f0 a4 0b 01 e8 4a 22 3f 07 e9 6a ff ff ff 0f 0b e9 a0 fd ff ff 40 80 e5 3f eb 88 <0f> 0b e9 18 ff ff ff 4c 89 ef 44 89 e6 45 31 ed e8 1e 75 ff ff e9
RSP: 0018:ffffc90002f8fb98 EFLAGS: 00010246
RAX: 0000000000000000 RBX: 1ffff920005f1f74 RCX: dffffc0000000000
RDX: 0000000000000000 RSI: 000000000000000b RDI: 0000000000040dc0
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000001
R10: ffffffff81bb0b36 R11: 0000000000000001 R12: ffffffff90265260
R13: 000000000000000b R14: 0000000000000000 R15: ffff888077a7c168
FS:  00005555555ca300(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fccaf1c16c0 CR3: 000000001e0ba000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 alloc_pages+0x1a7/0x300 mm/mempolicy.c:2191
 kmalloc_order+0x34/0xf0 mm/slab_common.c:957
 kmalloc_order_trace+0x14/0x120 mm/slab_common.c:973
 kmalloc include/linux/slab.h:596 [inline]
 kzalloc include/linux/slab.h:721 [inline]
 input_mt_init_slots drivers/input/input-mt.c:49 [inline]
 input_mt_init_slots+0xd9/0x5f0 drivers/input/input-mt.c:38
 uinput_create_device drivers/input/misc/uinput.c:327 [inline]
 uinput_ioctl_handler.isra.0+0x81d/0x1dc0 drivers/input/misc/uinput.c:870
 vfs_ioctl fs/ioctl.c:51 [inline]
 __do_sys_ioctl fs/ioctl.c:874 [inline]
 __se_sys_ioctl fs/ioctl.c:860 [inline]
 __x64_sys_ioctl+0x193/0x200 fs/ioctl.c:860
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x7f0ff0ff7c19
Code: 28 c3 e8 2a 14 00 00 66 2e 0f 1f 84 00 00 00 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 c0 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ffea032c248 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f0ff0ff7c19
RDX: 0000000000000000 RSI: 0000000000005501 RDI: 0000000000000004
RBP: 00007f0ff0fbbc00 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f0ff0fbbc90
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000

Crashes (322):
Manager	Time	Kernel	Commit	Syzkaller	Config	Log	Report	Syz repro	C repro	VM info	Title
ci-upstream-kasan-gce	2021/10/23 13:32	upstream	9c0c4d24ac00	282f03fb	.config	log	report	syz	C		WARNING in input_mt_init_slots
ci-upstream-kasan-gce	2021/10/23 06:34	upstream	64222515138e	282f03fb	.config	log	report	syz	C		WARNING in input_mt_init_slots
ci-upstream-kasan-gce	2021/10/23 02:44	upstream	64222515138e	282f03fb	.config	log	report	syz	C		WARNING in input_mt_init_slots
ci-upstream-kasan-gce	2021/10/23 00:59	upstream	64222515138e	282f03fb	.config	log	report	syz	C		WARNING in input_mt_init_slots
ci-upstream-kasan-gce	2021/10/23 00:20	upstream	64222515138e	282f03fb	.config	log	report	syz	C		WARNING in input_mt_init_slots
ci-upstream-kasan-gce	2021/10/20 14:09	upstream	d9abdee5fd5a	418a00eb	.config	log	report	syz	C		WARNING in input_mt_init_slots
ci-upstream-kasan-gce	2021/10/17 23:32	upstream	d999ade1cc86	0c5d9412	.config	log	report	syz	C		WARNING in input_mt_init_slots
ci-upstream-kasan-gce	2021/10/16 22:21	upstream	304040fb4909	0c5d9412	.config	log	report	syz	C		WARNING in input_mt_init_slots
ci-upstream-kasan-gce	2021/10/16 07:12	upstream	8fe31e0995f0	0c5d9412	.config	log	report	syz	C		WARNING in input_mt_init_slots
ci-upstream-kasan-gce	2021/10/12 01:30	upstream	64570fbc14f8	838e7e2c	.config	log	report	syz	C		WARNING in input_mt_init_slots
ci-upstream-kasan-gce	2021/10/11 21:19	upstream	64570fbc14f8	838e7e2c	.config	log	report	syz	C		WARNING in input_mt_init_slots
ci-upstream-kasan-gce	2021/10/10 10:07	upstream	7fd2bf83d59a	838e7e2c	.config	log	report	syz	C		WARNING in input_mt_init_slots
ci-upstream-kasan-gce	2021/09/03 05:48	upstream	4ac6d90867a4	15cea0a3	.config	log	report	syz	C		WARNING in input_mt_init_slots
ci-upstream-kasan-gce	2021/08/11 05:48	upstream	9e723c5380c6	6972b106	.config	log	report	syz	C		WARNING in input_mt_init_slots
ci-upstream-kasan-gce	2021/08/10 10:30	upstream	9a73fa375d58	6972b106	.config	log	report	syz	C		WARNING in input_mt_init_slots
ci-upstream-kasan-gce	2021/08/10 07:42	upstream	9a73fa375d58	6972b106	.config	log	report	syz	C		WARNING in input_mt_init_slots
ci-upstream-kasan-gce	2021/08/08 11:28	upstream	85a90500f9a1	6972b106	.config	log	report	syz	C		WARNING in input_mt_init_slots
ci-upstream-kasan-gce	2021/08/07 12:36	upstream	894d6f401b21	6972b106	.config	log	report	syz	C		WARNING in input_mt_init_slots
ci-upstream-kasan-gce	2021/08/05 01:16	upstream	251a1524293d	b97d64c9	.config	log	report	syz	C		WARNING in input_mt_init_slots
ci-upstream-kasan-gce	2021/08/04 04:22	upstream	d5ad8ec3cfb5	6c236867	.config	log	report	syz	C		WARNING in input_mt_init_slots
ci-upstream-kasan-gce	2021/08/02 17:15	upstream	c500bee1c5b2	6c236867	.config	log	report	syz	C		WARNING in input_mt_init_slots
ci-upstream-kasan-gce	2021/08/01 16:51	upstream	f3438b4c4e69	6c236867	.config	log	report	syz	C		WARNING in input_mt_init_slots
ci-upstream-kasan-gce	2021/07/31 07:05	upstream	764a5bc89b12	6c236867	.config	log	report	syz	C		WARNING in input_mt_init_slots
ci-upstream-kasan-gce	2021/07/30 16:09	upstream	764a5bc89b12	c585c7b0	.config	log	report	syz	C		WARNING in input_mt_init_slots
ci-upstream-kasan-gce	2021/07/30 15:48	upstream	764a5bc89b12	c585c7b0	.config	log	report	syz	C		WARNING in input_mt_init_slots
ci-upstream-kasan-gce	2021/07/29 04:02	upstream	4010a528219e	9a4781d4	.config	log	report	syz	C		WARNING in input_mt_init_slots
ci-upstream-kasan-gce	2021/07/28 01:24	upstream	7d549995d4e0	17d6ab15	.config	log	report	syz	C		WARNING in input_mt_init_slots
ci-upstream-kasan-gce	2021/07/27 19:46	upstream	ff1176468d36	fd511809	.config	log	report	syz	C		WARNING in input_mt_init_slots
ci-upstream-kasan-gce	2021/07/27 17:11	upstream	ff1176468d36	fd511809	.config	log	report	syz	C		WARNING in input_mt_init_slots
ci-upstream-kasan-gce	2021/07/26 03:09	upstream	d8079fac1681	4d1b57d4	.config	log	report	syz	C		WARNING in input_mt_init_slots
ci-upstream-kasan-gce	2021/07/25 14:34	upstream	7ffca2bb9d8b	4d1b57d4	.config	log	report	syz	C		WARNING in input_mt_init_slots
ci-upstream-kasan-gce	2021/07/23 18:36	upstream	9bead1b58c4c	bc5f1d88	.config	log	report	syz	C		WARNING in input_mt_init_slots
ci-upstream-kasan-gce	2021/07/23 13:17	upstream	9bead1b58c4c	bc5f1d88	.config	log	report	syz	C		WARNING in input_mt_init_slots
ci-upstream-kasan-gce	2021/07/23 04:57	upstream	9bead1b58c4c	bc5f1d88	.config	log	report	syz	C		WARNING in input_mt_init_slots
ci-upstream-kasan-gce	2021/07/22 07:47	upstream	7b6ae471e541	29c3f20f	.config	log	report	syz	C		WARNING in input_mt_init_slots
ci-upstream-kasan-gce-smack-root	2021/07/17 10:10	upstream	872f8edeb6bd	f115ae98	.config	log	report	syz	C		WARNING in input_mt_init_slots
ci-upstream-kasan-gce	2021/07/16 08:58	upstream	dd9c7df94c1b	f115ae98	.config	log	report	syz	C		WARNING in input_mt_init_slots
ci-upstream-linux-next-kasan-gce-root	2021/08/05 03:47	linux-next	8d4b477da1a8	b97d64c9	.config	log	report	syz	C		WARNING in input_mt_init_slots
ci-upstream-linux-next-kasan-gce-root	2021/08/05 03:26	linux-next	8d4b477da1a8	b97d64c9	.config	log	report	syz	C		WARNING in input_mt_init_slots
ci-upstream-linux-next-kasan-gce-root	2021/08/03 13:16	linux-next	8d4b477da1a8	6c236867	.config	log	report	syz	C		WARNING in input_mt_init_slots
ci-upstream-kasan-gce	2021/01/08 04:17	upstream	f5e6c330254a	c104d4a3	.config	log	report	syz	C
ci-upstream-kasan-gce-smack-root	2021/07/15 11:08	upstream	8096acd7442e	b9a2f64e	.config	log	report	syz			WARNING in input_mt_init_slots
ci-upstream-kasan-gce	2021/01/06 23:26	upstream	9f1abbe97c08	c104d4a3	.config	log	report	syz
ci-upstream-kasan-gce	2021/10/27 20:22	upstream	d25f27432f80	373bf66b	.config	log	report			info	WARNING in input_mt_init_slots
ci-upstream-kasan-gce-root	2021/10/20 05:44	upstream	d9abdee5fd5a	466b7db1	.config	log	report			info	WARNING in input_mt_init_slots
ci-upstream-kasan-gce-root	2021/10/19 05:34	upstream	519d81956ee2	24dc29db	.config	log	report			info	WARNING in input_mt_init_slots
ci-upstream-kasan-gce-smack-root	2021/10/18 13:08	upstream	cf52ad5ff16c	0c5d9412	.config	log	report			info	WARNING in input_mt_init_slots
ci-upstream-kasan-gce-root	2021/10/18 11:48	upstream	cf52ad5ff16c	0c5d9412	.config	log	report			info	WARNING in input_mt_init_slots
ci-upstream-kasan-gce	2021/10/18 10:29	upstream	cf52ad5ff16c	0c5d9412	.config	log	report			info	WARNING in input_mt_init_slots
ci-upstream-kasan-gce	2021/10/15 14:32	upstream	ec681c53f8d2	0c5d9412	.config	log	report			info	WARNING in input_mt_init_slots
ci-upstream-kasan-gce-smack-root	2021/10/10 09:13	upstream	7fd2bf83d59a	838e7e2c	.config	log	report			info	WARNING in input_mt_init_slots
ci-upstream-kasan-gce	2021/10/08 09:08	upstream	1da38549dd64	efe0f24d	.config	log	report			info	WARNING in input_mt_init_slots
ci-upstream-kasan-gce	2021/10/07 07:27	upstream	5af4055fa813	62ee0987	.config	log	report			info	WARNING in input_mt_init_slots
ci-upstream-kasan-gce-smack-root	2021/10/02 18:33	upstream	53d5fc89d66a	db0f5787	.config	log	report			info	WARNING in input_mt_init_slots
ci-upstream-kasan-gce-root	2021/10/02 12:35	upstream	53d5fc89d66a	db0f5787	.config	log	report			info	WARNING in input_mt_init_slots
ci-upstream-kasan-gce-root	2021/09/30 00:19	upstream	02d5e016800d	be530f6c	.config	log	report			info	WARNING in input_mt_init_slots
ci-upstream-kasan-gce-root	2021/09/28 12:14	upstream	0513e464f900	78494d16	.config	log	report			info	WARNING in input_mt_init_slots
ci-upstream-kasan-gce	2021/09/28 06:33	upstream	0513e464f900	78494d16	.config	log	report			info	WARNING in input_mt_init_slots
ci-upstream-kasan-gce-root	2021/09/19 06:47	upstream	93ff9f13be91	70b76c1d	.config	log	report			info	WARNING in input_mt_init_slots
ci-upstream-kasan-gce-smack-root	2021/09/19 06:41	upstream	93ff9f13be91	70b76c1d	.config	log	report			info	WARNING in input_mt_init_slots
ci-upstream-kasan-gce-root	2021/09/16 22:29	upstream	ff1ffd71d5f0	aae492f2	.config	log	report			info	WARNING in input_mt_init_slots
ci-upstream-kasan-gce-smack-root	2021/09/12 10:17	upstream	78e709522d2c	5ae8508a	.config	log	report			info	WARNING in input_mt_init_slots
ci-upstream-kasan-gce-smack-root	2021/09/05 06:46	upstream	49624efa65ac	d236a457	.config	log	report			info	WARNING in input_mt_init_slots
ci-upstream-kasan-gce	2021/09/03 01:40	upstream	4ac6d90867a4	15cea0a3	.config	log	report			info	WARNING in input_mt_init_slots
ci-upstream-kasan-gce-smack-root	2021/09/02 13:19	upstream	4ac6d90867a4	15cea0a3	.config	log	report			info	WARNING in input_mt_init_slots
ci-upstream-kasan-gce	2021/09/02 08:38	upstream	835d31d319d9	7eb7e152	.config	log	report			info	WARNING in input_mt_init_slots
ci-upstream-kasan-gce-root	2021/09/02 07:01	upstream	835d31d319d9	7eb7e152	.config	log	report			info	WARNING in input_mt_init_slots
ci-upstream-kasan-gce-smack-root	2021/09/01 17:27	upstream	b91db6a0b52e	7eb7e152	.config	log	report			info	WARNING in input_mt_init_slots
ci-upstream-kasan-gce	2021/08/27 05:08	upstream	1a6d80ff2419	b318694d	.config	log	report			info	WARNING in input_mt_init_slots
ci-upstream-kasan-gce	2021/08/19 16:20	upstream	d6d09a694205	a2fe1cb5	.config	log	report			info	WARNING in input_mt_init_slots
ci-upstream-kasan-gce-smack-root	2021/08/16 13:22	upstream	7c60610d4767	33c26cb7	.config	log	report			info	WARNING in input_mt_init_slots
ci-upstream-kasan-gce-root	2021/08/16 12:17	upstream	7c60610d4767	33c26cb7	.config	log	report			info	WARNING in input_mt_init_slots
ci-upstream-kasan-gce	2021/08/02 15:51	upstream	c500bee1c5b2	6c236867	.config	log	report			info	WARNING in input_mt_init_slots
ci-upstream-kasan-gce-386	2021/10/24 22:38	upstream	6c62666d8879	282f03fb	.config	log	report			info	WARNING in input_mt_init_slots
ci-upstream-kasan-gce-386	2021/10/23 23:16	upstream	9c0c4d24ac00	282f03fb	.config	log	report			info	WARNING in input_mt_init_slots
ci-qemu-upstream-386	2021/10/23 20:50	upstream	9c0c4d24ac00	282f03fb	.config	log	report			info	WARNING in input_mt_init_slots
ci-upstream-kasan-gce-386	2021/10/10 12:22	upstream	7fd2bf83d59a	838e7e2c	.config	log	report			info	WARNING in input_mt_init_slots
ci-upstream-kasan-gce-386	2021/09/28 09:23	upstream	0513e464f900	78494d16	.config	log	report			info	WARNING in input_mt_init_slots
ci-upstream-kasan-gce-386	2021/09/01 17:16	upstream	9c849ce86e0f	7eb7e152	.config	log	report			info	WARNING in input_mt_init_slots
ci-upstream-kasan-gce-386	2021/08/16 05:25	upstream	7c60610d4767	2489ab88	.config	log	report			info	WARNING in input_mt_init_slots
ci-upstream-linux-next-kasan-gce-root	2021/10/18 09:12	linux-next	7c832d2f9b95	0c5d9412	.config	log	report			info	WARNING in input_mt_init_slots
ci-upstream-linux-next-kasan-gce-root	2021/10/08 11:17	linux-next	683f29b781ae	efe0f24d	.config	log	report			info	WARNING in input_mt_init_slots
ci-upstream-linux-next-kasan-gce-root	2021/10/04 05:28	linux-next	a25006a77348	db0f5787	.config	log	report			info	WARNING in input_mt_init_slots
ci-upstream-linux-next-kasan-gce-root	2021/10/02 11:43	linux-next	a25006a77348	db0f5787	.config	log	report			info	WARNING in input_mt_init_slots
ci-upstream-linux-next-kasan-gce-root	2021/09/27 15:36	linux-next	bf5b1e621a51	78494d16	.config	log	report			info	WARNING in input_mt_init_slots
ci-upstream-linux-next-kasan-gce-root	2021/09/26 19:48	linux-next	5a5d008887b4	8cac236e	.config	log	report			info	WARNING in input_mt_init_slots
ci-upstream-linux-next-kasan-gce-root	2021/09/20 07:33	linux-next	9004fd387338	70b76c1d	.config	log	report			info	WARNING in input_mt_init_slots
ci-upstream-linux-next-kasan-gce-root	2021/09/04 17:35	linux-next	c1b13fe76e95	d236a457	.config	log	report			info	WARNING in input_mt_init_slots
ci-upstream-linux-next-kasan-gce-root	2021/08/31 00:45	linux-next	93717cde744f	8f58a0ef	.config	log	report			info	WARNING in input_mt_init_slots
ci-upstream-linux-next-kasan-gce-root	2021/08/16 04:18	linux-next	4b358aabb93a	2489ab88	.config	log	report			info	WARNING in input_mt_init_slots
ci-upstream-kasan-gce-root	2021/01/08 07:15	upstream	f5e6c330254a	c104d4a3	.config	log	report			info
ci-upstream-kasan-gce	2021/01/06 23:09	upstream	9f1abbe97c08	c104d4a3	.config	log	report			info