------------[ cut here ]------------
kernel BUG at mm/kmsan/kmsan.c:266!
invalid opcode: 0000 [#1] SMP
CPU: 1 PID: 11715 Comm: syz-executor.4 Not tainted 5.0.0-rc1+ #9
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:kmsan_memcpy_memmove_metadata+0xefe/0xf10 mm/kmsan/kmsan.c:281
Code: fb ff ff 48 8b 04 25 10 90 c3 8b 4c 01 e0 4c 8b 45 d0 48 bf 00 00 00 00 80 77 00 00 49 89 fa e9 54 f9 ff ff 0f 0b 0f 0b 0f 0b <0f> 0b 0f 0b 0f 0b 0f 0b 0f 0b 0f 0b 66 0f 1f 44 00 00 55 48 89 e5
RSP: 0018:ffff88802e9ef4b0 EFLAGS: 00010246
RAX: 00000000000f8f02 RBX: ffff8880b24a2000 RCX: 0000000000000000
RDX: 0000000031c9a000 RSI: ffff888031c9a000 RDI: 0000778000000000
RBP: ffff88802e9ef510 R08: ffff8880324a2000 R09: 0000000000000000
R10: 00000000000000c0 R11: ffffffff8836c580 R12: ffff8880324a2000
R13: ffff8880324a2000 R14: ffffc9003c864000 R15: 0000000000002000
FS:  00007f53354eb700(0000) GS:ffff88812fd00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00000000206ed000 CR3: 000000003845e000 CR4: 00000000001406e0
Call Trace:
 kmsan_memcpy_metadata+0xb/0x10 mm/kmsan/kmsan.c:324
 __msan_memcpy+0x58/0x70 mm/kmsan/kmsan_instr.c:139
 default_write_copy_kernel+0xdf/0x150 sound/core/pcm_lib.c:1946
 interleaved_copy+0x1bf/0x1f0 sound/core/pcm_lib.c:2007
 __snd_pcm_lib_xfer+0x2307/0x3350 sound/core/pcm_lib.c:2227
 snd_pcm_oss_write3+0x367/0x530 sound/core/oss/pcm_oss.c:1243
 io_playback_transfer+0x18d/0x840 sound/core/oss/io.c:47
 snd_pcm_plug_write_transfer+0x598/0x750 sound/core/oss/pcm_plugin.c:620
 snd_pcm_oss_write2+0x29c/0x9d0 sound/core/oss/pcm_oss.c:1372
 snd_pcm_oss_write1 sound/core/oss/pcm_oss.c:1438 [inline]
 snd_pcm_oss_write+0x60f/0x1450 sound/core/oss/pcm_oss.c:2781
 __vfs_write+0x1e2/0xc20 fs/read_write.c:485
 vfs_write+0x481/0x920 fs/read_write.c:549
 ksys_write fs/read_write.c:598 [inline]
 __do_sys_write fs/read_write.c:610 [inline]
 __se_sys_write+0x17a/0x370 fs/read_write.c:607
 __x64_sys_write+0x4a/0x70 fs/read_write.c:607
 do_syscall_64+0xbc/0xf0 arch/x86/entry/common.c:291
 entry_SYSCALL_64_after_hwframe+0x63/0xe7
RIP: 0033:0x457e29
Code: ad b8 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 7b b8 fb ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007f53354eac78 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000457e29
RDX: 00000000fffffefd RSI: 00000000200000c0 RDI: 0000000000000003
RBP: 000000000073bf00 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f53354eb6d4
R13: 00000000004c6dd7 R14: 00000000004dc698 R15: 00000000ffffffff
Modules linked in:
BUG: unable to handle kernel NULL pointer dereference at 0000000000000010
---[ end trace e73520fa3a325bc5 ]---
#PF error: [normal kernel read fault]
RIP: 0010:kmsan_memcpy_memmove_metadata+0xefe/0xf10 mm/kmsan/kmsan.c:281
PGD 2f2f4067 P4D 2f2f4067 PUD 2f2f1067 PMD 0 
Code: fb ff ff 48 8b 04 25 10 90 c3 8b 4c 01 e0 4c 8b 45 d0 48 bf 00 00 00 00 80 77 00 00 49 89 fa e9 54 f9 ff ff 0f 0b 0f 0b 0f 0b <0f> 0b 0f 0b 0f 0b 0f 0b 0f 0b 0f 0b 66 0f 1f 44 00 00 55 48 89 e5
Oops: 0000 [#2] SMP
RSP: 0018:ffff88802e9ef4b0 EFLAGS: 00010246
CPU: 0 PID: 11689 Comm: syz-executor.5 Tainted: G      D           5.0.0-rc1+ #9
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:list_lru_del+0x6f6/0x920 mm/list_lru.c:161
Code: 28 4d 85 ed 0f 85 16 01 00 00 4d 89 7f 08 48 8b 9d 78 ff ff ff 48 83 c3 10 4c 8b 7d b8 4d 85 ff 4c 8b 6d 98 0f 85 15 01 00 00 <4c> 8b 23 48 89 df e8 cf 53 1a 00 4c 8b 30 8b 02 89 45 a8 4d 85 ff
RAX: 00000000000f8f02 RBX: ffff8880b24a2000 RCX: 0000000000000000
RSP: 0018:ffff88802eecf618 EFLAGS: 00010246
RAX: ffff888032dd8508 RBX: 0000000000000010 RCX: ccccccccccccd000
RDX: ffff888032dda508 RSI: ffff888000000000 RDI: 00000000000002e0
RBP: ffff88802eecf6b0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: ffffffff8214e040 R12: ffff88803bb57620
RDX: 0000000031c9a000 RSI: ffff888031c9a000 RDI: 0000778000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
FS:  0000000000ac4940(0000) GS:ffff88812fc00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000010 CR3: 000000002f2f7000 CR4: 00000000001406f0
Call Trace:
RBP: ffff88802e9ef510 R08: ffff8880324a2000 R09: 0000000000000000
 d_lru_del fs/dcache.c:391 [inline]
 select_collect+0x239/0x7c0 fs/dcache.c:1441
R10: 00000000000000c0 R11: ffffffff8836c580 R12: ffff8880324a2000
 d_walk+0x36e/0xa80 fs/dcache.c:1265
R13: ffff8880324a2000 R14: ffffc9003c864000 R15: 0000000000002000
 shrink_dcache_parent fs/dcache.c:1473 [inline]
 d_invalidate+0x1ee/0x670 fs/dcache.c:1567
 proc_flush_task_mnt fs/proc/base.c:3073 [inline]
 proc_flush_task+0x310/0x850 fs/proc/base.c:3143
FS:  00007f53354eb700(0000) GS:ffff88812fd00000(0000) knlGS:0000000000000000
 release_task+0xb5/0x2490 kernel/exit.c:197
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
 wait_task_zombie kernel/exit.c:1157 [inline]
 wait_consider_task+0x2ddb/0x4640 kernel/exit.c:1384
CR2: 00000000206ed000 CR3: 000000003845e000 CR4: 00000000001406e0
 do_wait_thread kernel/exit.c:1447 [inline]
 do_wait+0x608/0xbd0 kernel/exit.c:1518