BUG: unable to handle page fault for address: fffff5200153c1fc
#PF: supervisor read access in kernel mode
#PF: error_code(0x0000) - not-present page
PGD 7ffcd067 P4D 7ffcd067 PUD 2cd1c067 PMD 245f9067 PTE 0
Oops: 0000 [#1] PREEMPT SMP KASAN
CPU: 0 PID: 5 Comm: kworker/0:0 Not tainted 5.5.0-rc2-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:bytes_is_nonzero mm/kasan/generic.c:92 [inline]
RIP: 0010:memory_is_nonzero mm/kasan/generic.c:109 [inline]
RIP: 0010:memory_is_poisoned_n mm/kasan/generic.c:135 [inline]
RIP: 0010:memory_is_poisoned mm/kasan/generic.c:166 [inline]
RIP: 0010:check_memory_region_inline mm/kasan/generic.c:182 [inline]
RIP: 0010:check_memory_region+0x123/0x1a0 mm/kasan/generic.c:192
Code: 49 89 d9 49 29 c1 e9 68 ff ff ff 5b b8 01 00 00 00 41 5c 41 5d 5d c3 4d 85 c9 74 ef 4d 01 e1 eb 09 48 83 c0 01 4c 39 c8 74 e1 <80> 38 00 74 f2 eb 8c 4d 39 c2 74 4d e8 dc e2 ff ff 31 c0 5b 41 5c
RSP: 0018:ffffc9000038fc30 EFLAGS: 00010296
RAX: fffff5200153c1fc RBX: fffff5200153c200 RCX: ffffffff83f99b8c
RDX: 0000000000000001 RSI: 0000000000000020 RDI: ffffc9000a9e0fe0
RBP: ffffc9000038fc48 R08: 1ffff9200153c1fc R09: fffff5200153c200
R10: fffff5200153c1ff R11: ffffc9000a9e0fff R12: fffff5200153c1fc
R13: ffffc9000a9e0fe0 R14: ffffc90008cd1fe0 R15: ffffc90008cd1fe0
FS:  0000000000000000(0000) GS:ffff88802d000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: fffff5200153c1fc CR3: 0000000067495000 CR4: 0000000000340ef0
DR0: 0000000020000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000600
Call Trace:
 memcpy+0x38/0x50 mm/kasan/common.c:126
 memcpy include/linux/string.h:380 [inline]
 drm_fb_helper_dirty_blit_real drivers/gpu/drm/drm_fb_helper.c:399 [inline]
 drm_fb_helper_dirty_work+0x44c/0x780 drivers/gpu/drm/drm_fb_helper.c:428
 process_one_work+0x9af/0x1740 kernel/workqueue.c:2264
 worker_thread+0x98/0xe40 kernel/workqueue.c:2410
 kthread+0x361/0x430 kernel/kthread.c:255
 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:352
Modules linked in:
CR2: fffff5200153c1fc
---[ end trace 3c31ffa75d2ce29f ]---
RIP: 0010:bytes_is_nonzero mm/kasan/generic.c:92 [inline]
RIP: 0010:memory_is_nonzero mm/kasan/generic.c:109 [inline]
RIP: 0010:memory_is_poisoned_n mm/kasan/generic.c:135 [inline]
RIP: 0010:memory_is_poisoned mm/kasan/generic.c:166 [inline]
RIP: 0010:check_memory_region_inline mm/kasan/generic.c:182 [inline]
RIP: 0010:check_memory_region+0x123/0x1a0 mm/kasan/generic.c:192
Code: 49 89 d9 49 29 c1 e9 68 ff ff ff 5b b8 01 00 00 00 41 5c 41 5d 5d c3 4d 85 c9 74 ef 4d 01 e1 eb 09 48 83 c0 01 4c 39 c8 74 e1 <80> 38 00 74 f2 eb 8c 4d 39 c2 74 4d e8 dc e2 ff ff 31 c0 5b 41 5c
RSP: 0018:ffffc9000038fc30 EFLAGS: 00010296
RAX: fffff5200153c1fc RBX: fffff5200153c200 RCX: ffffffff83f99b8c
RDX: 0000000000000001 RSI: 0000000000000020 RDI: ffffc9000a9e0fe0
RBP: ffffc9000038fc48 R08: 1ffff9200153c1fc R09: fffff5200153c200
R10: fffff5200153c1ff R11: ffffc9000a9e0fff R12: fffff5200153c1fc
R13: ffffc9000a9e0fe0 R14: ffffc90008cd1fe0 R15: ffffc90008cd1fe0
FS:  0000000000000000(0000) GS:ffff88802d000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: fffff5200153c1fc CR3: 0000000067495000 CR4: 0000000000340ef0
DR0: 0000000020000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000600