==================================================================
BUG: KMSAN: uninit-value in slab_alloc_node mm/slub.c:2704 [inline]
BUG: KMSAN: uninit-value in slab_alloc mm/slub.c:2727 [inline]
BUG: KMSAN: uninit-value in __kmalloc_track_caller+0x7e3/0xc60 mm/slub.c:4322
CPU: 0 PID: 9026 Comm: syz-executor3 Not tainted 4.19.0-rc1+ #36
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
FAULT_INJECTION: forcing a failure.
name failslab, interval 1, probability 0, space 0, times 0
 slab_alloc_node mm/slub.c:2704 [inline]
 slab_alloc mm/slub.c:2727 [inline]
 __kmalloc_track_caller+0x7e3/0xc60 mm/slub.c:4322
 __do_krealloc mm/slab_common.c:1468 [inline]
 krealloc+0x158/0x3d0 mm/slab_common.c:1515
 snd_pcm_hw_rule_add+0x372/0xd90 sound/core/pcm_lib.c:1136
 snd_pcm_hw_constraints_init+0xca0/0x1ea0 sound/core/pcm_native.c:2183
 snd_pcm_open_substream+0x1a8/0x470 sound/core/pcm_native.c:2414
 snd_pcm_open_file sound/core/pcm_native.c:2448 [inline]
 snd_pcm_open+0x2f3/0xa00 sound/core/pcm_native.c:2515
 snd_pcm_playback_open+0x136/0x210 sound/core/pcm_native.c:2475
 snd_open+0x606/0x7a0 sound/core/sound.c:175
 chrdev_open+0xc26/0xdb0 fs/char_dev.c:417
 do_dentry_open+0xc9d/0x1660 fs/open.c:771
 vfs_open+0xaf/0xe0 fs/open.c:880
 do_last fs/namei.c:3418 [inline]
 path_openat+0x17a6/0x67c0 fs/namei.c:3534
 do_filp_open+0x259/0x610 fs/namei.c:3564
 do_sys_open+0x630/0x940 fs/open.c:1063
 __do_sys_open fs/open.c:1081 [inline]
 __se_sys_open fs/open.c:1076 [inline]
 __x64_sys_open+0xf2/0x130 fs/open.c:1076