================================================================== BUG: KASAN: stack-out-of-bounds in finish_writeback_work.isra.0+0x11b/0x120 fs/fs-writeback.c:168 Read of size 8 at addr ffff888093c2f9c8 by task kworker/u4:5/14094 CPU: 1 PID: 14094 Comm: kworker/u4:5 Not tainted 5.3.0+ #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Workqueue: writeback wb_workfn (flush-8:0) Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x172/0x1f0 lib/dump_stack.c:113 print_address_description.cold+0xd4/0x306 mm/kasan/report.c:351 __kasan_report.cold+0x1b/0x36 mm/kasan/report.c:482 kasan_report+0x12/0x17 mm/kasan/common.c:618 __asan_report_load8_noabort+0x14/0x20 mm/kasan/generic_report.c:132 finish_writeback_work.isra.0+0x11b/0x120 fs/fs-writeback.c:168 wb_do_writeback fs/fs-writeback.c:2030 [inline] wb_workfn+0x34f/0x11e0 fs/fs-writeback.c:2070 process_one_work+0x9af/0x1740 kernel/workqueue.c:2269 worker_thread+0x98/0xe40 kernel/workqueue.c:2415 kthread+0x361/0x430 kernel/kthread.c:255 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:352 The buggy address belongs to the page: page:ffffea00024f0bc0 refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 flags: 0x1fffc0000000000() raw: 01fffc0000000000 0000000000000000 ffffffff00000101 0000000000000000 raw: 0000000000000000 0000000000000000 00000000ffffffff 0000000000000000 page dumped because: kasan: bad access detected Memory state around the buggy address: ffff888093c2f880: 00 00 00 00 00 00 00 00 00 00 00 00 00 f1 f1 f1 ffff888093c2f900: f1 00 00 f3 f3 00 00 00 00 00 00 00 00 00 00 00 >ffff888093c2f980: 00 00 00 00 00 00 00 00 f1 f1 f1 f1 00 f3 f3 f3 ^ ffff888093c2fa00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 f1 ffff888093c2fa80: f1 f1 f1 00 f2 f2 f2 00 00 00 00 00 00 00 00 00 ==================================================================