BUG: unable to handle page fault for address: fffff5200517c600
#PF: supervisor read access in kernel mode
#PF: error_code(0x0000) - not-present page
PGD 7ffd1067 P4D 7ffd1067 PUD 101e9067 PMD 4568b067 PTE 0
Oops: 0000 [#1] PREEMPT SMP KASAN
CPU: 1 PID: 18 Comm: kworker/1:0 Not tainted 5.10.0-rc6-syzkaller #0
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS rel-1.12.0-59-gc9ba5276e321-prebuilt.qemu.org 04/01/2014
Workqueue: events drm_fb_helper_dirty_work
RIP: 0010:memory_is_nonzero mm/kasan/generic.c:120 [inline]
RIP: 0010:memory_is_poisoned_n mm/kasan/generic.c:134 [inline]
RIP: 0010:memory_is_poisoned mm/kasan/generic.c:165 [inline]
RIP: 0010:check_memory_region_inline mm/kasan/generic.c:183 [inline]
RIP: 0010:check_memory_region+0x9c/0x180 mm/kasan/generic.c:192
Code: 48 85 d2 4c 0f 49 da 49 c1 fb 03 45 85 db 0f 84 c5 00 00 00 45 89 db 4a 8d 14 d8 eb 0d 48 83 c0 08 48 39 d0 0f 84 a9 00 00 00 <48> 83 38 00 74 ed 48 8d 50 08 eb 09 48 83 c0 01 48 39 d0 74 7a 80
RSP: 0018:ffffc900004cfc08 EFLAGS: 00010202
RAX: fffff5200517c600 RBX: fffff5200517c800 RCX: ffffffff8423b61e
RDX: fffff5200517c800 RSI: 0000000000001000 RDI: ffffc90028be3000
RBP: fffff5200517c600 R08: 0000000000000001 R09: ffffc90028be3fff
R10: fffff5200517c7ff R11: 0000000000000040 R12: 0000000000001000
R13: ffffc90028be3000 R14: ffffc9000b741000 R15: 0000000000001000
FS:  0000000000000000(0000) GS:ffff88802cb00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: fffff5200517c600 CR3: 00000000619ca000 CR4: 0000000000350ee0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 memcpy+0x39/0x60 mm/kasan/common.c:106
 memcpy include/linux/string.h:399 [inline]
 drm_fb_helper_dirty_blit_real drivers/gpu/drm/drm_fb_helper.c:403 [inline]
 drm_fb_helper_dirty_work+0x42e/0x810 drivers/gpu/drm/drm_fb_helper.c:435
 process_one_work+0x933/0x15a0 kernel/workqueue.c:2272
 worker_thread+0x64c/0x1120 kernel/workqueue.c:2418
 kthread+0x3b1/0x4a0 kernel/kthread.c:292
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:296
Modules linked in:
CR2: fffff5200517c600
---[ end trace f12856a2d82d41cf ]---
RIP: 0010:memory_is_nonzero mm/kasan/generic.c:120 [inline]
RIP: 0010:memory_is_poisoned_n mm/kasan/generic.c:134 [inline]
RIP: 0010:memory_is_poisoned mm/kasan/generic.c:165 [inline]
RIP: 0010:check_memory_region_inline mm/kasan/generic.c:183 [inline]
RIP: 0010:check_memory_region+0x9c/0x180 mm/kasan/generic.c:192
Code: 48 85 d2 4c 0f 49 da 49 c1 fb 03 45 85 db 0f 84 c5 00 00 00 45 89 db 4a 8d 14 d8 eb 0d 48 83 c0 08 48 39 d0 0f 84 a9 00 00 00 <48> 83 38 00 74 ed 48 8d 50 08 eb 09 48 83 c0 01 48 39 d0 74 7a 80
RSP: 0018:ffffc900004cfc08 EFLAGS: 00010202
RAX: fffff5200517c600 RBX: fffff5200517c800 RCX: ffffffff8423b61e
RDX: fffff5200517c800 RSI: 0000000000001000 RDI: ffffc90028be3000
RBP: fffff5200517c600 R08: 0000000000000001 R09: ffffc90028be3fff
R10: fffff5200517c7ff R11: 0000000000000040 R12: 0000000000001000
R13: ffffc90028be3000 R14: ffffc9000b741000 R15: 0000000000001000
FS:  0000000000000000(0000) GS:ffff88802cb00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: fffff5200517c600 CR3: 00000000619ca000 CR4: 0000000000350ee0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400