Warning: Permanently added '[localhost]:36031' (ECDSA) to the list of known hosts.
executing program
syzkaller login: [  185.807765][ T1221] BUG: unable to handle page fault for address: fffff520016dec00
[  185.808680][ T1221] #PF: supervisor read access in kernel mode
[  185.808759][ T1221] #PF: error_code(0x0000) - not-present page
[  185.808762][ T1221] PGD 7ffcd067 P4D 7ffcd067 PUD 2c920067 PMD 28203067 PTE 0
[  185.808934][ T1221] Oops: 0000 [#1] PREEMPT SMP KASAN
[  185.809459][ T1221] CPU: 1 PID: 1221 Comm: kworker/1:2 Not tainted 5.7.0-syzkaller #0
[  185.809782][ T1221] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS rel-1.12.0-59-gc9ba5276e321-prebuilt.qemu.org 04/01/2014
[  185.810366][ T1221] Workqueue: events drm_fb_helper_dirty_work
[  185.814679][ T1221] RIP: 0010:check_memory_region+0x9d/0x190
[  185.814679][ T1221] Code: c9 4d 0f 49 c1 49 c1 f8 03 45 85 c0 0f 84 03 01 00 00 41 83 e8 01 4e 8d 44 c0 08 eb 0d 48 83 c0 08 4c 39 c0 0f 84 b2 00 00 00 <48> 83 38 00 74 ed 4c 8d 40 08 eb 09 48 83 c0 01 49 39 c0 74 69 80
[  185.814679][ T1221] RSP: 0018:ffffc90003f47c20 EFLAGS: 00010216
[  185.814679][ T1221] RAX: fffff520016dec00 RBX: fffff520016dec00 RCX: ffffffff840645bd
[  185.814679][ T1221] RDX: 0000000000000001 RSI: 0000000000001000 RDI: ffffc9000b6f6000
[  185.814679][ T1221] RBP: fffff520016dee00 R08: fffff520016dee00 R09: 0000000000000200
[  185.814679][ T1221] R10: ffffc9000b6f6fff R11: fffff520016dedff R12: 0000000000001000
[  185.814679][ T1221] R13: ffffc9000b6f6000 R14: ffffc90009b47000 R15: ffff888078c65a00
[  185.814679][ T1221] FS:  0000000000000000(0000) GS:ffff88802cf00000(0000) knlGS:0000000000000000
[  185.814679][ T1221] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  185.814679][ T1221] CR2: fffff520016dec00 CR3: 00000000214d1000 CR4: 0000000000340ee0
[  185.814679][ T1221] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  185.814679][ T1221] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  185.814679][ T1221] Call Trace:
[  185.814679][ T1221]  memcpy+0x39/0x60
[  185.814679][ T1221]  drm_fb_helper_dirty_work+0x42d/0x760
[  185.814679][ T1221]  ? drm_fb_helper_debug_leave+0x620/0x620
[  185.814679][ T1221]  ? rcu_read_lock_any_held.part.0+0x50/0x50
[  185.814679][ T1221]  process_one_work+0x965/0x16a0
[  185.814679][ T1221]  ? lock_release+0x800/0x800
[  185.814679][ T1221]  ? pwq_dec_nr_in_flight+0x310/0x310
[  185.814679][ T1221]  ? rwlock_bug.part.0+0x90/0x90
[  185.814679][ T1221]  worker_thread+0x96/0xe20
[  185.814679][ T1221]  ? process_one_work+0x16a0/0x16a0
[  185.814679][ T1221]  kthread+0x388/0x470
[  185.814679][ T1221]  ? kthread_mod_delayed_work+0x1a0/0x1a0
[  185.814679][ T1221]  ? kthread_mod_delayed_work+0x1a0/0x1a0
[  185.814679][ T1221]  ret_from_fork+0x24/0x30
[  185.814679][ T1221] Modules linked in:
[  185.814679][ T1221] CR2: fffff520016dec00
[  185.814679][ T1221] ---[ end trace fdb627f1507ae2fd ]---
[  185.814679][ T1221] RIP: 0010:check_memory_region+0x9d/0x190
[  185.814679][ T1221] Code: c9 4d 0f 49 c1 49 c1 f8 03 45 85 c0 0f 84 03 01 00 00 41 83 e8 01 4e 8d 44 c0 08 eb 0d 48 83 c0 08 4c 39 c0 0f 84 b2 00 00 00 <48> 83 38 00 74 ed 4c 8d 40 08 eb 09 48 83 c0 01 49 39 c0 74 69 80
[  185.814679][ T1221] RSP: 0018:ffffc90003f47c20 EFLAGS: 00010216
[  185.814679][ T1221] RAX: fffff520016dec00 RBX: fffff520016dec00 RCX: ffffffff840645bd
[  185.814679][ T1221] RDX: 0000000000000001 RSI: 0000000000001000 RDI: ffffc9000b6f6000
[  185.814679][ T1221] RBP: fffff520016dee00 R08: fffff520016dee00 R09: 0000000000000200
[  185.814679][ T1221] R10: ffffc9000b6f6fff R11: fffff520016dedff R12: 0000000000001000
[  185.814679][ T1221] R13: ffffc9000b6f6000 R14: ffffc90009b47000 R15: ffff888078c65a00
[  185.814679][ T1221] FS:  0000000000000000(0000) GS:ffff88802cf00000(0000) knlGS:0000000000000000
[  185.814679][ T1221] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  185.814679][ T1221] CR2: fffff520016dec00 CR3: 00000000214d1000 CR4: 0000000000340ee0
[  185.814679][ T1221] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  185.814679][ T1221] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  185.814679][ T1221] Kernel panic - not syncing: Fatal exception
[  185.814679][ T1221] Kernel Offset: disabled
[  185.814679][ T1221] Rebooting in 86400 seconds..