audit: type=1400 audit(1594905362.617:8): avc: denied { execmem } for pid=6457 comm="syz-executor187" scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=process permissive=1 ------------[ cut here ]------------ WARNING: CPU: 0 PID: 6457 at sound/core/info.c:637 snd_info_get_line.cold+0x11/0x20 sound/core/info.c:637 Kernel panic - not syncing: panic_on_warn set ... CPU: 0 PID: 6457 Comm: syz-executor187 Not tainted 4.19.133-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x1fc/0x2fe lib/dump_stack.c:118 panic+0x26a/0x50e kernel/panic.c:186 __warn.cold+0x20/0x61 kernel/panic.c:541 report_bug+0x262/0x2b0 lib/bug.c:186 fixup_bug arch/x86/kernel/traps.c:178 [inline] fixup_bug arch/x86/kernel/traps.c:173 [inline] do_error_trap+0x1d7/0x310 arch/x86/kernel/traps.c:296 invalid_op+0x14/0x20 arch/x86/entry/entry_64.S:1038 RIP: 0010:snd_info_get_line.cold+0x11/0x20 sound/core/info.c:637 Code: 31 c0 5b 5d c3 48 89 ef e8 9e df 15 fc eb be 48 89 ef e8 64 e2 15 fc eb d7 e8 9d c2 df fb 48 c7 c7 60 0e 22 88 e8 40 d5 ca fb <0f> 0b c7 44 24 0c 01 00 00 00 e9 9f cf ff ff e8 7d c2 df fb 48 c7 RSP: 0018:ffff8880a4c17978 EFLAGS: 00010282 RAX: 0000000000000024 RBX: ffff8880a910e200 RCX: 0000000000000000 RDX: 0000000000000000 RSI: ffffffff8154cd91 RDI: ffffed1014982f21 RBP: 0000000000000080 R08: 0000000000000024 R09: 0000000000000000 R10: 0000000000000005 R11: 0000000000000000 R12: ffff888094784540 R13: dffffc0000000000 R14: ffff8880a8641108 R15: ffff8880a910e200 snd_mixer_oss_proc_write+0xe2/0x530 sound/core/oss/mixer_oss.c:1192 snd_info_text_entry_release+0xfa/0x260 sound/core/info.c:425 close_pdeo.part.0+0xda/0x2f0 fs/proc/inode.c:176 close_pdeo fs/proc/inode.c:401 [inline] proc_reg_release+0x21e/0x270 fs/proc/inode.c:395 __fput+0x2ce/0x890 fs/file_table.c:278 task_work_run+0x148/0x1c0 kernel/task_work.c:113 exit_task_work include/linux/task_work.h:22 [inline] do_exit+0xbb2/0x2b70 kernel/exit.c:887 do_group_exit+0x125/0x310 kernel/exit.c:990 __do_sys_exit_group kernel/exit.c:1001 [inline] __se_sys_exit_group kernel/exit.c:999 [inline] __x64_sys_exit_group+0x3a/0x50 kernel/exit.c:999 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x43eeb8 Code: Bad RIP value. RSP: 002b:00007ffed49c2ff8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 000000000043eeb8 RDX: 0000000000000000 RSI: 000000000000003c RDI: 0000000000000000 RBP: 00000000004be6c8 R08: 00000000000000e7 R09: ffffffffffffffd0 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 R13: 00000000006d0180 R14: 0000000000000000 R15: 0000000000000000 Kernel Offset: disabled Rebooting in 86400 seconds..