=====================================================
BUG: KMSAN: uninit-value in snd_pcm_hw_rule_add+0x93a/0x1130 sound/core/pcm_lib.c:1153
 snd_pcm_hw_rule_add+0x93a/0x1130 sound/core/pcm_lib.c:1153
 loopback_open+0x8dc/0x11d0 sound/drivers/aloop.c:1229
 snd_pcm_open_substream+0x218f/0x36b0 sound/core/pcm_native.c:2676
 snd_pcm_oss_open_file sound/core/oss/pcm_oss.c:2435 [inline]
 snd_pcm_oss_open+0x18da/0x2e50 sound/core/oss/pcm_oss.c:2516
 soundcore_open+0xb81/0xc90 sound/sound_core.c:593
 chrdev_open+0xc71/0xe00 fs/char_dev.c:414
 do_dentry_open+0x1193/0x1bd0 fs/open.c:822
 vfs_open+0xaf/0xe0 fs/open.c:945
 do_open fs/namei.c:3428 [inline]
 path_openat+0x53d7/0x5eb0 fs/namei.c:3561
 do_filp_open+0x306/0x760 fs/namei.c:3588
 do_sys_openat2+0x263/0x8f0 fs/open.c:1200
 do_sys_open fs/open.c:1216 [inline]
 __do_sys_openat fs/open.c:1232 [inline]
 __se_sys_openat fs/open.c:1227 [inline]
 __x64_sys_openat+0x35f/0x3c0 fs/open.c:1227
 do_syscall_x64 arch/x86/entry/common.c:51 [inline]
 do_syscall_64+0x54/0xd0 arch/x86/entry/common.c:82
 entry_SYSCALL_64_after_hwframe+0x44/0xae

Local variable handle.i created at:
 perf_log_itrace_start kernel/events/core.c:9068 [inline]
 event_sched_in+0x13b8/0x33e0 kernel/events/core.c:2557
 group_sched_in kernel/events/core.c:2595 [inline]
 merge_sched_in kernel/events/core.c:3746 [inline]
 visit_groups_merge+0x28a8/0x7320 kernel/events/core.c:3696
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