================================================================== BUG: KASAN: stack-out-of-bounds in strlen lib/string.c:481 [inline] BUG: KASAN: stack-out-of-bounds in strlcpy+0x101/0x120 lib/string.c:141 Read of size 1 at addr ffff8801d0d17cdc by task syz-executor2/7206 CPU: 0 PID: 7206 Comm: syz-executor2 Not tainted 4.4.152-ge15716b #88 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 0000000000000000 3a348d8175cd60f4 ffff8801d0d17b50 ffffffff81e15fed ffffea00074345c0 ffff8801d0d17cdc 0000000000000000 ffff8801d0d17cdc ffff8801d0d17c50 ffff8801d0d17b88 ffffffff8151b489 ffff8801d0d17cdc Call Trace: [] __dump_stack lib/dump_stack.c:15 [inline] [] dump_stack+0xc1/0x124 lib/dump_stack.c:51 [] print_address_description+0x6c/0x216 mm/kasan/report.c:252 [] kasan_report_error mm/kasan/report.c:351 [inline] [] kasan_report.cold.7+0x175/0x2f7 mm/kasan/report.c:408 [] __asan_report_load1_noabort+0x14/0x20 mm/kasan/report.c:426 [] strlen lib/string.c:481 [inline] [] strlcpy+0x101/0x120 lib/string.c:141 [] snd_seq_ioctl_create_queue+0x1bf/0x2c0 sound/core/seq/seq_clientmgr.c:1561 [] snd_seq_do_ioctl+0x177/0x1a0 sound/core/seq/seq_clientmgr.c:2223 [] snd_seq_ioctl+0x71/0xa0 sound/core/seq/seq_clientmgr.c:2240 [] vfs_ioctl fs/ioctl.c:43 [inline] [] file_ioctl fs/ioctl.c:470 [inline] [] do_vfs_ioctl+0x63f/0xf40 fs/ioctl.c:605 [] SYSC_ioctl fs/ioctl.c:622 [inline] [] SyS_ioctl+0x8f/0xc0 fs/ioctl.c:613 [] entry_SYSCALL_64_fastpath+0x22/0x9e The buggy address belongs to the page: page:ffffea00074345c0 count:0 mapcount:0 mapping: (null) index:0x0 flags: 0x8000000000000000() page dumped because: kasan: bad access detected Memory state around the buggy address: ffff8801d0d17b80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ffff8801d0d17c00: 00 00 00 00 00 00 f1 f1 f1 f1 00 00 00 00 00 00 >ffff8801d0d17c80: 00 00 00 00 00 00 00 00 00 00 00 04 f2 f2 00 00 ^ ffff8801d0d17d00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ffff8801d0d17d80: 00 00 00 00 00 00 00 00 00 00 00 00 f1 f1 f1 f1 ==================================================================