==================================================================
BUG: KASAN: vmalloc-out-of-bounds in __read_once_size include/linux/compiler.h:252 [inline]
BUG: KASAN: vmalloc-out-of-bounds in rcu_seq_current kernel/rcu/rcu.h:99 [inline]
BUG: KASAN: vmalloc-out-of-bounds in srcu_invoke_callbacks+0x2fe/0x320 kernel/rcu/srcutree.c:1185
Read of size 8 at addr ffffc90002bbae00 by task kworker/0:9/3840

CPU: 0 PID: 3840 Comm: kworker/0:9 Not tainted 5.7.0-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: rcu_gp srcu_invoke_callbacks
Call Trace:
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x128/0x182 lib/dump_stack.c:118
 print_address_description.constprop.8.cold.10+0x56/0x41e mm/kasan/report.c:383
 __kasan_report mm/kasan/report.c:513 [inline]
 kasan_report.cold.11+0x1f/0x37 mm/kasan/report.c:530
 __read_once_size include/linux/compiler.h:252 [inline]
 rcu_seq_current kernel/rcu/rcu.h:99 [inline]
 srcu_invoke_callbacks+0x2fe/0x320 kernel/rcu/srcutree.c:1185
 process_one_work+0x908/0x15d0 kernel/workqueue.c:2268
 worker_thread+0x82/0xb50 kernel/workqueue.c:2414
 kthread+0x340/0x410 kernel/kthread.c:268
 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:351


Memory state around the buggy address:
 ffffc90002bbad00: f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9
 ffffc90002bbad80: f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9
>ffffc90002bbae00: f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9
                   ^
 ffffc90002bbae80: f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9
 ffffc90002bbaf00: f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9
==================================================================