------------[ cut here ]------------ WARNING: CPU: 0 PID: 16687 at sound/core/info.c:637 snd_info_get_line+0x1fd/0x2d0 sound/core/info.c:637 Kernel panic - not syncing: panic_on_warn set ... CPU: 0 PID: 16687 Comm: syz-executor.0 Not tainted 4.14.184-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: audit: type=1804 audit(1595370343.141:98): pid=16700 uid=0 auid=0 ses=4 subj=system_u:system_r:kernel_t:s0 op="invalid_pcr" cause="open_writers" comm="syz-executor.3" name="/root/syzkaller-testdir218636363/syzkaller.87h6Sp/422/file0" dev="sda1" ino=17173 res=1 __dump_stack lib/dump_stack.c:17 [inline] dump_stack+0x1b2/0x283 lib/dump_stack.c:58 panic+0x1f9/0x42d kernel/panic.c:183 __warn.cold+0x2f/0x30 kernel/panic.c:547 report_bug+0x20a/0x248 lib/bug.c:186 fixup_bug arch/x86/kernel/traps.c:177 [inline] fixup_bug arch/x86/kernel/traps.c:172 [inline] do_error_trap+0x195/0x2d0 arch/x86/kernel/traps.c:295 invalid_op+0x1b/0x40 arch/x86/entry/entry_64.S:964 RIP: 0010:snd_info_get_line+0x1fd/0x2d0 sound/core/info.c:637 RSP: 0018:ffff888060d1fab0 EFLAGS: 00010297 RAX: ffff88805fd8a580 RBX: ffff88808e7b47c0 RCX: 0000000000000000 RDX: 0000000000000000 RSI: ffff888060d1fbb0 RDI: ffff88808e7b47c0 RBP: dffffc0000000000 R08: 0000000000000001 R09: 0000000000000000 R10: ffff88805fd8ae08 R11: ffff88805fd8a580 R12: ffff88809f27cd40 R13: 0000000000000080 R14: ffff88809baecac0 R15: ffff88808e7b47c0 snd_mixer_oss_proc_write+0xc9/0x480 sound/core/oss/mixer_oss.c:1192 snd_info_text_entry_release+0xfa/0x260 sound/core/info.c:425 close_pdeo.part.0+0xdd/0x2c0 fs/proc/inode.c:165 close_pdeo+0x125/0x140 fs/proc/inode.c:173 proc_reg_release+0xca/0x110 fs/proc/inode.c:376 __fput+0x25f/0x7a0 fs/file_table.c:210 task_work_run+0x113/0x190 kernel/task_work.c:113 tracehook_notify_resume include/linux/tracehook.h:191 [inline] exit_to_usermode_loop+0x1ad/0x200 arch/x86/entry/common.c:164 prepare_exit_to_usermode arch/x86/entry/common.c:199 [inline] syscall_return_slowpath arch/x86/entry/common.c:270 [inline] do_syscall_64+0x4a3/0x640 arch/x86/entry/common.c:297 entry_SYSCALL_64_after_hwframe+0x46/0xbb RIP: 0033:0x415d71 RSP: 002b:00007ffe088896c0 EFLAGS: 00000293 ORIG_RAX: 0000000000000003 RAX: 0000000000000000 RBX: 0000000000000006 RCX: 0000000000415d71 RDX: 0000000000000000 RSI: 0000000000001999 RDI: 0000000000000005 RBP: 0000000000000001 R08: 00000000f20af99d R09: 0000000000000000 R10: 00007ffe088897b0 R11: 0000000000000293 R12: 00000000007902e8 R13: 000000000004548b R14: ffffffffffffffff R15: 000000000078bf0c Kernel Offset: disabled Rebooting in 86400 seconds..