BUG: unable to handle kernel paging request in bitfill

BUG: unable to handle kernel paging request in bitfill_aligned (2)
Status: upstream: reported on 2020/11/17 20:47
Reported-by: syzbot+a4edd73d589b0b7efbeb@syzkaller.appspotmail.com
First crash: 256d, last: 35d

similar bugs (1):
Kernel	Title	Repro	Cause bisect	Fix bisect	Count	Last	Reported	Patched	Status
upstream	BUG: unable to handle kernel paging request in bitfill_aligned				1	444d	442d	0/22	closed as dup on 2020/08/16 15:35

Sample crash report:

BUG: unable to handle page fault for address: ffff888001000000
#PF: supervisor write access in kernel mode
#PF: error_code(0x0003) - permissions violation
PGD 11401067 P4D 11401067 PUD 11402067 PMD 80000000010001e1 
Oops: 0003 [#1] PREEMPT SMP KASAN
CPU: 0 PID: 26812 Comm: syz-executor.1 Not tainted 5.13.0-rc6-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:__writeq arch/x86/include/asm/io.h:98 [inline]
RIP: 0010:bitfill_aligned+0x170/0x270 drivers/video/fbdev/core/cfbfillrect.c:64
Code: 00 00 00 e8 c2 40 43 fd 4c 8b 7c 24 08 44 89 e8 31 d2 f7 74 24 04 89 c5 bf 07 00 00 00 89 c6 e8 b6 44 43 fd 83 fd 07 76 37 90 <4c> 89 33 4c 89 73 08 4c 89 73 10 4c 89 73 18 4c 89 73 20 4c 89 73
RSP: 0018:ffffc9000233f178 EFLAGS: 00010296
RAX: ffffffff843bd8a0 RBX: ffff888001000000 RCX: 0000000000040000
RDX: ffffc9000b3a1000 RSI: 000000000003ffff RDI: 0000000000040000
RBP: 0000000000000008 R08: ffffffff843bd86a R09: 0000000000000040
R10: 0000000000000002 R11: ffff888029be3880 R12: ffffffffffffffff
R13: 0000000000000400 R14: 0000000000000000 R15: 0000000000000000
FS:  00007f281a5d5700(0000) GS:ffff8880b9a00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffff888001000000 CR3: 00000000681ca000 CR4: 00000000001506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 cfb_fillrect+0x5d8/0x800 drivers/video/fbdev/core/cfbfillrect.c:327
 bit_clear_margins+0x2c5/0x700 drivers/video/fbdev/core/bitblit.c:224
 fbcon_clear_margins drivers/video/fbdev/core/fbcon.c:1315 [inline]
 fbcon_switch+0x1652/0x22e0 drivers/video/fbdev/core/fbcon.c:2146
 redraw_screen+0x53d/0x1270 drivers/tty/vt/vt.c:1021
 vc_do_resize+0x1281/0x1890 drivers/tty/vt/vt.c:1325
 vt_resizex drivers/tty/vt/vt_ioctl.c:716 [inline]
 vt_ioctl+0x2e31/0x37b0 drivers/tty/vt/vt_ioctl.c:934
 tty_ioctl+0xf51/0x1720 drivers/tty/tty_io.c:2805
 vfs_ioctl fs/ioctl.c:51 [inline]
 __do_sys_ioctl fs/ioctl.c:1069 [inline]
 __se_sys_ioctl+0xfb/0x170 fs/ioctl.c:1055
 do_syscall_64+0x3f/0xb0 arch/x86/entry/common.c:47
 entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x4665d9
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 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 bc ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f281a5d5188 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 000000000056bf80 RCX: 00000000004665d9
RDX: 0000000020000040 RSI: 000000000000560a RDI: 0000000000000003
RBP: 00000000004bfcb9 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 000000000056bf80
R13: 00007ffd5fd7eb1f R14: 00007f281a5d5300 R15: 0000000000022000
Modules linked in:
CR2: ffff888001000000
---[ end trace 1463b15c5f1da608 ]---
RIP: 0010:__writeq arch/x86/include/asm/io.h:98 [inline]
RIP: 0010:bitfill_aligned+0x170/0x270 drivers/video/fbdev/core/cfbfillrect.c:64
Code: 00 00 00 e8 c2 40 43 fd 4c 8b 7c 24 08 44 89 e8 31 d2 f7 74 24 04 89 c5 bf 07 00 00 00 89 c6 e8 b6 44 43 fd 83 fd 07 76 37 90 <4c> 89 33 4c 89 73 08 4c 89 73 10 4c 89 73 18 4c 89 73 20 4c 89 73
RSP: 0018:ffffc9000233f178 EFLAGS: 00010296
RAX: ffffffff843bd8a0 RBX: ffff888001000000 RCX: 0000000000040000
RDX: ffffc9000b3a1000 RSI: 000000000003ffff RDI: 0000000000040000
RBP: 0000000000000008 R08: ffffffff843bd86a R09: 0000000000000040
R10: 0000000000000002 R11: ffff888029be3880 R12: ffffffffffffffff
R13: 0000000000000400 R14: 0000000000000000 R15: 0000000000000000
FS:  00007f281a5d5700(0000) GS:ffff8880b9a00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffff888001000000 CR3: 00000000681ca000 CR4: 00000000001506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400

Crashes (11):
Manager	Time	Kernel	Commit	Syzkaller	Config	Log	Report	VM info	Title
ci-upstream-kasan-gce-smack-root	2021/06/16 01:37	upstream	94f0b2d4a1d0	990d3cbe	.config	log	report	info	BUG: unable to handle kernel paging request in bitfill_aligned
ci-qemu2-arm32	2021/06/23 00:41	upstream	bf152b0b41dc	aba2b2fb	.config	log	report	info	BUG: unable to handle kernel paging request in bitfill_aligned
ci-qemu2-arm32	2021/06/10 18:35	upstream	bf152b0b41dc	1ba81399	.config	log	report	info	BUG: unable to handle kernel paging request in bitfill_aligned
ci-qemu2-arm32	2021/05/10 07:12	upstream	bf152b0b41dc	bc5434be	.config	log	report	info	BUG: unable to handle kernel paging request in bitfill_aligned
ci-qemu2-arm32	2021/04/11 07:57	upstream	bf152b0b41dc	bfeda1b1	.config	log	report	info	BUG: unable to handle kernel paging request in bitfill_aligned
ci-qemu2-arm32	2021/04/01 16:56	upstream	bf152b0b41dc	6a81331a	.config	log	report	info	BUG: unable to handle kernel paging request in bitfill_aligned
ci-qemu2-arm32	2021/03/20 18:46	upstream	bf152b0b41dc	878fc870	.config	log	report	info	BUG: unable to handle kernel paging request in bitfill_aligned
ci-qemu2-arm32	2021/03/17 09:38	upstream	1a4431a5db2b	fdb2bb2c	.config	log	report	info	BUG: unable to handle kernel paging request in bitfill_aligned
ci-upstream-kasan-gce-386	2020/11/28 07:23	upstream	99c710c46dfc	486f93ef	.config	log	report	info
ci-upstream-kasan-gce-386	2020/11/16 00:47	upstream	0062442ecfef	1bf9a662	.config	log	report	info
ci-upstream-kasan-gce-386	2020/11/13 18:26	upstream	585e5b17b92d	e1140d25	.config	log	report	info