WARNING: CPU: 1 PID: 20471 at sound/core/pcm_lib.c:1681 snd_pcm_hw_param_last+0x28b/0x670 sound/core/pcm_lib.c:1681
Kernel panic - not syncing: panic_on_warn set ...

CPU: 1 PID: 20471 Comm: syz-executor4 Not tainted 4.15.0-rc6+ #160
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 __dump_stack lib/dump_stack.c:17 [inline]
 dump_stack+0x194/0x257 lib/dump_stack.c:53
 panic+0x1e4/0x41c kernel/panic.c:183
 __warn+0x1dc/0x200 kernel/panic.c:547
 report_bug+0x211/0x2d0 lib/bug.c:184
 fixup_bug.part.11+0x37/0x80 arch/x86/kernel/traps.c:178
 fixup_bug arch/x86/kernel/traps.c:247 [inline]
 do_error_trap+0x2d7/0x3e0 arch/x86/kernel/traps.c:296
 do_invalid_op+0x1b/0x20 arch/x86/kernel/traps.c:315
 invalid_op+0x22/0x40 arch/x86/entry/entry_64.S:1079
RIP: 0010:snd_pcm_hw_param_last+0x28b/0x670 sound/core/pcm_lib.c:1681
RSP: 0018:ffff8801d335f438 EFLAGS: 00010216
RAX: 0000000000010000 RBX: ffff8801dada5b40 RCX: ffffffff841bc42b
RDX: 0000000000001137 RSI: ffffc900024ca000 RDI: ffffed003a66be80
RBP: ffff8801d335f480 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 000000000000000a
R13: 00000000ffffffea R14: 0000000000000002 R15: 0000000000000400
 snd_pcm_hw_param_near.constprop.27+0x6f5/0x9a0 sound/core/oss/pcm_oss.c:455
 snd_pcm_oss_change_params+0xb3d/0x3720 sound/core/oss/pcm_oss.c:878
 snd_pcm_oss_get_active_substream+0x10c/0x150 sound/core/oss/pcm_oss.c:1088
 snd_pcm_oss_get_channels sound/core/oss/pcm_oss.c:1708 [inline]
 snd_pcm_oss_set_channels+0x23e/0x3a0 sound/core/oss/pcm_oss.c:1700
 snd_pcm_oss_ioctl+0x1dcc/0x39f0 sound/core/oss/pcm_oss.c:2514
 snd_pcm_oss_ioctl_compat+0x24/0x30 sound/core/oss/pcm_oss.c:2606
 C_SYSC_ioctl fs/compat_ioctl.c:1473 [inline]
 compat_SyS_ioctl+0x151/0x2a30 fs/compat_ioctl.c:1419
 do_syscall_32_irqs_on arch/x86/entry/common.c:327 [inline]
 do_fast_syscall_32+0x3ee/0xf9d arch/x86/entry/common.c:389
 entry_SYSENTER_compat+0x54/0x63 arch/x86/entry/entry_64_compat.S:129
RIP: 0023:0xf7f53c79
RSP: 002b:00000000f772e08c EFLAGS: 00000296 ORIG_RAX: 0000000000000036
RAX: ffffffffffffffda RBX: 0000000000000014 RCX: 00000000c0045006
RDX: 0000000020003ff8 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
Dumping ftrace buffer:
   (ftrace buffer empty)
Kernel Offset: disabled
Rebooting in 86400 seconds..