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BUG: KMSAN: uninit-value in strlen lib/string.c:484 [inline]
BUG: KMSAN: uninit-value in strlcpy+0x6b/0x1b0 lib/string.c:142
CPU: 1 PID: 20351 Comm: syz-executor4 Not tainted 4.19.0-rc1+ #40
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x14b/0x190 lib/dump_stack.c:113
 kmsan_report+0x183/0x2b0 mm/kmsan/kmsan.c:956
 __msan_warning+0x70/0xc0 mm/kmsan/kmsan_instr.c:645
 strlen lib/string.c:484 [inline]
 strlcpy+0x6b/0x1b0 lib/string.c:142
 snd_seq_oss_synth_make_info+0x265/0x900 sound/core/seq/oss/seq_oss_synth.c:631
 snd_seq_oss_synth_info_user sound/core/seq/oss/seq_oss_ioctl.c:37 [inline]
 snd_seq_oss_ioctl+0x1025/0x1fc0 sound/core/seq/oss/seq_oss_ioctl.c:152
 odev_ioctl+0xd5/0x130 sound/core/seq/oss/seq_oss.c:187
 vfs_ioctl fs/ioctl.c:46 [inline]
 do_vfs_ioctl+0xc77/0x2660 fs/ioctl.c:687
 ksys_ioctl fs/ioctl.c:702 [inline]
 __do_sys_ioctl fs/ioctl.c:709 [inline]
 __se_sys_ioctl+0x1da/0x270 fs/ioctl.c:707
 __x64_sys_ioctl+0x4a/0x70 fs/ioctl.c:707
 do_syscall_64+0xb8/0x100 arch/x86/entry/common.c:291
 entry_SYSCALL_64_after_hwframe+0x63/0xe7
RIP: 0033:0x457099
Code: fd b4 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 cb b4 fb ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007f63a021bc78 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007f63a021c6d4 RCX: 0000000000457099
RDX: 0000000020a07fff RSI: 00000000c08c5102 RDI: 0000000000000006
RBP: 00000000009300a0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff
R13: 00000000004ced88 R14: 00000000004c5184 R15: 0000000000000000

Local variable description: ----minf@snd_seq_oss_synth_make_info
Variable was created at:
 snd_seq_oss_synth_make_info+0x6c/0x900 sound/core/seq/oss/seq_oss_synth.c:618
 snd_seq_oss_synth_info_user sound/core/seq/oss/seq_oss_ioctl.c:37 [inline]
 snd_seq_oss_ioctl+0x1025/0x1fc0 sound/core/seq/oss/seq_oss_ioctl.c:152
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