BUG: Bad page state (6)

BUG: Bad page state (6)
Status: closed as invalid on 2019/03/01 18:38
Reported-by: syzbot+6f5a9b79b75b66078bf0@syzkaller.appspotmail.com
First crash: 490d, last: 490d

similar bugs (7):
Kernel	Title	Repro	Count	Last	Reported	Patched	Status
upstream	BUG: Bad page state (3)	C	3	906d	913d	4/17	fixed on 2018/02/02 04:39
upstream	BUG: Bad page state (5)	C	171	491d	504d	0/17	closed as invalid on 2019/02/27 20:53
android-49	BUG: Bad page state		3	273d	297d	0/3	auto-closed as invalid on 2020/01/30 18:48
android-54	BUG: Bad page state	C	9	94d	125d	0/1	upstream: reported C repro on 2020/02/28 01:20
upstream	BUG: Bad page state (2)		1	948d	944d	0/17	closed as invalid on 2017/12/06 12:57
upstream	BUG: Bad page state (4)		1	710d	710d	0/17	closed as invalid on 2018/09/05 12:51
upstream	BUG: Bad page state	C	2	1051d	1052d	3/17	fixed on 2017/10/24 06:54

Sample crash report:

BUG: Bad page state in process syz-executor193  pfn:9225a
page:ffffea0002489680 count:0 mapcount:0 mapping:ffff88808652fd80 index:0x81
shmem_aops 
name:"memfd:cgroup2" 
flags: 0x1fffc000008000e(referenced|uptodate|dirty|swapbacked)
raw: 01fffc000008000e ffff88809277fac0 ffff88809277fac0 ffff88808652fd80
raw: 0000000000000081 0000000000000000 00000000ffffffff 0000000000000000
page dumped because: non-NULL mapping
Modules linked in:
CPU: 0 PID: 7659 Comm: syz-executor193 Not tainted 5.0.0-rc8-next-20190228 #45
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x172/0x1f0 lib/dump_stack.c:113
 bad_page.cold+0xda/0xff mm/page_alloc.c:586
 free_pages_check_bad+0x142/0x1a0 mm/page_alloc.c:1013
 free_pages_check mm/page_alloc.c:1022 [inline]
 free_pages_prepare mm/page_alloc.c:1112 [inline]
 free_pcp_prepare mm/page_alloc.c:1137 [inline]
 free_unref_page_prepare mm/page_alloc.c:3001 [inline]
 free_unref_page_list+0x31d/0xc40 mm/page_alloc.c:3070
 release_pages+0x60d/0x1940 mm/swap.c:794
 pagevec_lru_move_fn+0x218/0x2a0 mm/swap.c:213
 activate_page_drain mm/swap.c:297 [inline]
 lru_add_drain_cpu+0x3b1/0x520 mm/swap.c:596
 lru_add_drain+0x20/0x60 mm/swap.c:647
 exit_mmap+0x290/0x530 mm/mmap.c:3134
 __mmput kernel/fork.c:1047 [inline]
 mmput+0x15f/0x4c0 kernel/fork.c:1068
 exit_mm kernel/exit.c:546 [inline]
 do_exit+0x816/0x2fa0 kernel/exit.c:863
 do_group_exit+0x135/0x370 kernel/exit.c:980
 __do_sys_exit_group kernel/exit.c:991 [inline]
 __se_sys_exit_group kernel/exit.c:989 [inline]
 __x64_sys_exit_group+0x44/0x50 kernel/exit.c:989
 do_syscall_64+0x103/0x610 arch/x86/entry/common.c:290
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x442a58
Code: 00 00 be 3c 00 00 00 eb 19 66 0f 1f 84 00 00 00 00 00 48 89 d7 89 f0 0f 05 48 3d 00 f0 ff ff 77 21 f4 48 89 d7 44 89 c0 0f 05 <48> 3d 00 f0 ff ff 76 e0 f7 d8 64 41 89 01 eb d8 0f 1f 84 00 00 00
RSP: 002b:00007ffe99e2faf8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000442a58
RDX: 0000000000000000 RSI: 000000000000003c RDI: 0000000000000000
RBP: 00000000004c2468 R08: 00000000000000e7 R09: ffffffffffffffd0
R10: 0000000002000005 R11: 0000000000000246 R12: 0000000000000001
R13: 00000000006d4180 R14: 0000000000000000 R15: 0000000000000000

Crashes (2):
Manager	Time	Kernel	Commit	Syzkaller	Config	Log	Report	Syz repro	C repro	Maintainers
ci-upstream-linux-next-kasan-gce-root	2019/02/28 10:11	linux-next	42fd8df9	34ec456b	.config	log	report	syz	C	akpm@linux-foundation.org, arunks@codeaurora.org, dan.j.williams@intel.com, ldr709@gmail.com, linux-kernel@vger.kernel.org, linux-mm@kvack.org, mhocko@suse.com, nborisov@suse.com, rppt@linux.vnet.ibm.com, vbabka@suse.cz, willy@infradead.org, yuehaibing@huawei.com
ci-upstream-linux-next-kasan-gce-root	2019/02/28 09:22	linux-next	42fd8df9	34ec456b	.config	log	report			akpm@linux-foundation.org, arunks@codeaurora.org, dan.j.williams@intel.com, ldr709@gmail.com, linux-kernel@vger.kernel.org, linux-mm@kvack.org, mhocko@suse.com, nborisov@suse.com, rppt@linux.vnet.ibm.com, vbabka@suse.cz, willy@infradead.org