UBSAN: shift-out-of-bounds in ./include/linux/log2.h:57:13
shift exponent 64 is too large for 64-bit type 'long unsigned int'
CPU: 0 PID: 10112 Comm: syz-executor.0 Not tainted 5.10.0-next-20201218-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 __dump_stack lib/dump_stack.c:79 [inline]
 dump_stack+0x107/0x163 lib/dump_stack.c:120
 ubsan_epilogue+0xb/0x5a lib/ubsan.c:148
 __ubsan_handle_shift_out_of_bounds.cold+0xb1/0x181 lib/ubsan.c:395
 __roundup_pow_of_two include/linux/log2.h:57 [inline]
 snd_pcm_oss_period_size sound/core/oss/pcm_oss.c:732 [inline]
 snd_pcm_oss_change_params_locked.cold+0x37/0x78 sound/core/oss/pcm_oss.c:925
 snd_pcm_oss_change_params sound/core/oss/pcm_oss.c:1084 [inline]
 snd_pcm_oss_get_active_substream+0x164/0x1c0 sound/core/oss/pcm_oss.c:1101
 snd_pcm_oss_get_channels sound/core/oss/pcm_oss.c:1792 [inline]
 snd_pcm_oss_set_channels+0x244/0x380 sound/core/oss/pcm_oss.c:1784
 snd_pcm_oss_ioctl+0x1a84/0x3430 sound/core/oss/pcm_oss.c:2633
 vfs_ioctl fs/ioctl.c:48 [inline]
 __do_sys_ioctl fs/ioctl.c:753 [inline]
 __se_sys_ioctl fs/ioctl.c:739 [inline]
 __x64_sys_ioctl+0x193/0x200 fs/ioctl.c:739
 do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46
 entry_SYSCALL_64_after_hwframe+0x44/0xa9
RIP: 0033:0x45e149
Code: 0d 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 db b3 fb ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007f42193e3c68 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 000000000045e149
RDX: 00000000200000c0 RSI: 00000000c0045006 RDI: 0000000000000003
RBP: 000000000119bfc0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 000000000119bf8c
R13: 00007fffae7adbaf R14: 00007f42193e49c0 R15: 000000000119bf8c
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