syz-executor7 (5105) used greatest stack depth: 15952 bytes left
BUG: unable to handle kernel paging request at ffffc90000003000
IP: memset_erms+0x9/0x10 arch/x86/lib/memset_64.S:65
PGD 1dad2c067 P4D 1dad2c067 PUD 1dad2d067 PMD 1dad2f067 PTE 0
Oops: 0002 [#1] SMP KASAN
Dumping ftrace buffer:
   (ftrace buffer empty)
Modules linked in:
CPU: 0 PID: 5108 Comm: syz-executor6 Not tainted 4.15.0-rc9+ #279
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:memset_erms+0x9/0x10 arch/x86/lib/memset_64.S:65
RSP: 0018:ffff8801c0e1f230 EFLAGS: 00010246
RAX: fffff52000000c80 RBX: ffffc90000002001 RCX: 0000000000003000
RDX: 0000000000003fff RSI: 0000000000000080 RDI: ffffc90000003000
RBP: ffff8801c0e1f250 R08: 0000000000000000 R09: ffffc90000002001
R10: 0000000000000800 R11: fffff52000000bff R12: 0000000000003fff
R13: 0000000000000080 R14: ffffffff86e6b8f0 R15: 0000000000000008
FS:  00007f0972814700(0000) GS:ffff8801db200000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffffc90000003000 CR3: 0000000006822003 CR4: 00000000001606f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 memset include/linux/string.h:329 [inline]
 snd_pcm_format_set_silence+0x13f/0x4b0 sound/core/pcm_misc.c:414
 snd_pcm_oss_sync+0x585/0x830 sound/core/oss/pcm_oss.c:1601
 snd_pcm_oss_release+0x20b/0x280 sound/core/oss/pcm_oss.c:2444
 __fput+0x327/0x7e0 fs/file_table.c:210
 ____fput+0x15/0x20 fs/file_table.c:244
 task_work_run+0x199/0x270 kernel/task_work.c:113
 exit_task_work include/linux/task_work.h:22 [inline]
 do_exit+0x9bb/0x1ad0 kernel/exit.c:865
 do_group_exit+0x149/0x400 kernel/exit.c:968
 get_signal+0x73f/0x16c0 kernel/signal.c:2335
 do_signal+0x90/0x1eb0 arch/x86/kernel/signal.c:809
 exit_to_usermode_loop+0x214/0x310 arch/x86/entry/common.c:158
 prepare_exit_to_usermode arch/x86/entry/common.c:195 [inline]
 syscall_return_slowpath+0x490/0x550 arch/x86/entry/common.c:264
 entry_SYSCALL_64_fastpath+0x9e/0xa0
RIP: 0033:0x452f19
RSP: 002b:00007f0972813ce8 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: fffffffffffffe00 RBX: 000000000071bf80 RCX: 0000000000452f19
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 000000000071bf80
RBP: 000000000071bf80 R08: 0000000000000018 R09: 000000000071bf58
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000a2f7cf R14: 00007f09728149c0 R15: 0000000000000004
Code: 48 c1 e9 03 40 0f b6 f6 48 b8 01 01 01 01 01 01 01 01 48 0f af c6 f3 48 ab 89 d1 f3 aa 4c 89 c8 c3 90 49 89 f9 40 88 f0 48 89 d1 <f3> aa 4c 89 c8 c3 90 49 89 fa 40 0f b6 ce 48 b8 01 01 01 01 01 
RIP: memset_erms+0x9/0x10 arch/x86/lib/memset_64.S:65 RSP: ffff8801c0e1f230
CR2: ffffc90000003000
---[ end trace 956784d435fdbb70 ]---