==================================================================
BUG: KASAN: vmalloc-out-of-bounds in __read_once_size include/linux/compiler.h:199 [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+0x8e/0x330 kernel/rcu/srcutree.c:1171
Read of size 8 at addr ffffc90002db6c80 by task kworker/0:24/2752

CPU: 0 PID: 2752 Comm: kworker/0:24 Not tainted 5.5.0-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+0x1fb/0x318 lib/dump_stack.c:118
 print_address_description+0x74/0x5c0 mm/kasan/report.c:374
 __kasan_report+0x149/0x1c0 mm/kasan/report.c:506
 kasan_report+0x26/0x50 mm/kasan/common.c:641
 __asan_report_load8_noabort+0x14/0x20 mm/kasan/generic_report.c:135
 __read_once_size include/linux/compiler.h:199 [inline]
 rcu_seq_current kernel/rcu/rcu.h:99 [inline]
 srcu_invoke_callbacks+0x8e/0x330 kernel/rcu/srcutree.c:1171
 process_one_work+0x7f5/0x10f0 kernel/workqueue.c:2264
 worker_thread+0xbbc/0x1630 kernel/workqueue.c:2410
 kthread+0x332/0x350 kernel/kthread.c:255
 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:352


Memory state around the buggy address:
 ffffc90002db6b80: f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9
 ffffc90002db6c00: f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9
>ffffc90002db6c80: f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9
                   ^
 ffffc90002db6d00: f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9
 ffffc90002db6d80: f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9
==================================================================