audit: type=1400 audit(1599459437.406:8): avc: denied { execmem } for pid=6471 comm="syz-executor116" 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: 6488 at sound/core/oss/mulaw.c:332 snd_pcm_plugin_build_mulaw.cold+0x11/0x7c sound/core/oss/mulaw.c:332 Kernel panic - not syncing: panic_on_warn set ... CPU: 0 PID: 6488 Comm: syz-executor116 Not tainted 4.19.143-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_pcm_plugin_build_mulaw.cold+0x11/0x7c sound/core/oss/mulaw.c:332 Code: c7 c7 e0 fe 22 88 e8 d9 b6 c1 fb 0f 0b 49 c7 c4 fa ff ff ff e9 df e8 ff ff e8 a7 aa d6 fb 48 c7 c7 e0 fe 22 88 e8 ba b6 c1 fb <0f> 0b 41 bc fa ff ff ff e9 85 fd ff ff e8 89 aa d6 fb 48 c7 c7 e0 RSP: 0018:ffff88809723f8c8 EFLAGS: 00010282 RAX: 0000000000000024 RBX: ffff88809723f9b0 RCX: 0000000000000000 RDX: 0000000000000000 RSI: ffffffff8154d001 RDI: ffffed1012e47f0b ------------[ cut here ]------------ RBP: 1ffff11012e47f1b R08: 0000000000000024 R09: 0000000000000000 R10: 0000000000000005 R11: 0000000000000000 R12: ffff88809723f9d0 R13: ffff88809723f9f0 R14: 0000000000000000 R15: ffff88809723f9f0 ------------[ cut here ]------------ WARNING: CPU: 1 PID: 6489 at sound/core/oss/mulaw.c:332 snd_pcm_plugin_build_mulaw.cold+0x11/0x7c sound/core/oss/mulaw.c:332 snd_pcm_plug_format_plugins+0xb70/0x1360 sound/core/oss/pcm_plugin.c:518 Modules linked in: CPU: 1 PID: 6489 Comm: syz-executor116 Not tainted 4.19.143-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 snd_pcm_oss_change_params_locked+0x2a88/0x35c0 sound/core/oss/pcm_oss.c:970 RIP: 0010:snd_pcm_plugin_build_mulaw.cold+0x11/0x7c sound/core/oss/mulaw.c:332 Code: c7 c7 e0 fe 22 88 e8 d9 b6 c1 fb 0f 0b 49 c7 c4 fa ff ff ff e9 df e8 ff ff e8 a7 aa d6 fb 48 c7 c7 e0 fe 22 88 e8 ba b6 c1 fb <0f> 0b 41 bc fa ff ff ff e9 85 fd ff ff e8 89 aa d6 fb 48 c7 c7 e0 RSP: 0018:ffff88809588f8c8 EFLAGS: 00010282 RAX: 0000000000000024 RBX: ffff88809588f9b0 RCX: 0000000000000000 RDX: 0000000000000000 RSI: ffffffff8154d001 RDI: ffffed1012b11f0b RBP: 1ffff11012b11f1b R08: 0000000000000024 R09: 0000000000000000 R10: 0000000000000005 R11: 0000000000000000 R12: ffff88809588f9d0 snd_pcm_oss_change_params sound/core/oss/pcm_oss.c:1102 [inline] snd_pcm_oss_make_ready+0xe6/0x2e0 sound/core/oss/pcm_oss.c:1161 R13: ffff88809588f9f0 R14: 0000000000000000 R15: ffff88809588f9f0 snd_pcm_oss_sync+0x1de/0x800 sound/core/oss/pcm_oss.c:1722 FS: 00000000026b7880(0000) GS:ffff8880ae700000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 snd_pcm_oss_release+0x26c/0x300 sound/core/oss/pcm_oss.c:2561 CR2: 00000000006cb090 CR3: 00000000946cf000 CR4: 00000000001406e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 __fput+0x2ce/0x890 fs/file_table.c:278 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 task_work_run+0x148/0x1c0 kernel/task_work.c:113 Call Trace: exit_task_work include/linux/task_work.h:22 [inline] do_exit+0xbb2/0x2b70 kernel/exit.c:887 snd_pcm_plug_format_plugins+0xb70/0x1360 sound/core/oss/pcm_plugin.c:518 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 snd_pcm_oss_change_params_locked+0x2a88/0x35c0 sound/core/oss/pcm_oss.c:970 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x440038 Code: 00 00 be 3c 00 00 00 eb 19 66 0f 1f 84 00 00 00 00 00 48 89 d7 89 f0 0f 05 48 3d 00 f0 ff ff 77 21 f4 48 89 d7 44 89 c0 0f 05 <48> 3d 00 f0 ff ff 76 e0 f7 d8 64 41 89 01 eb d8 0f 1f 84 00 00 00 RSP: 002b:00007ffec33666f8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000440038 RDX: 0000000000000000 RSI: 000000000000003c RDI: 0000000000000000 RBP: 00000000004bf870 R08: 00000000000000e7 R09: ffffffffffffffd0 snd_pcm_oss_change_params sound/core/oss/pcm_oss.c:1102 [inline] snd_pcm_oss_make_ready+0xe6/0x2e0 sound/core/oss/pcm_oss.c:1161 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 snd_pcm_oss_sync+0x1de/0x800 sound/core/oss/pcm_oss.c:1722 R13: 00000000006d1180 R14: 0000000000000000 R15: 0000000000000000 snd_pcm_oss_release+0x26c/0x300 sound/core/oss/pcm_oss.c:2561 __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: 0033:0x440038 Code: 00 00 be 3c 00 00 00 eb 19 66 0f 1f 84 00 00 00 00 00 48 89 d7 89 f0 0f 05 48 3d 00 f0 ff ff 77 21 f4 48 89 d7 44 89 c0 0f 05 <48> 3d 00 f0 ff ff 76 e0 f7 d8 64 41 89 01 eb d8 0f 1f 84 00 00 00 RSP: 002b:00007ffec33666f8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000440038 RDX: 0000000000000000 RSI: 000000000000003c RDI: 0000000000000000 RBP: 00000000004bf870 R08: 00000000000000e7 R09: ffffffffffffffd0 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 R13: 00000000006d1180 R14: 0000000000000000 R15: 0000000000000000 irq event stamp: 11282 hardirqs last enabled at (11281): [] __raw_spin_unlock_irq include/linux/spinlock_api_smp.h:168 [inline] hardirqs last enabled at (11281): [] _raw_spin_unlock_irq+0x24/0x80 kernel/locking/spinlock.c:192 hardirqs last disabled at (11282): [] trace_hardirqs_off_thunk+0x1a/0x1c softirqs last enabled at (9138): [] __do_softirq+0x69a/0x9a0 kernel/softirq.c:318 softirqs last disabled at (9117): [] invoke_softirq kernel/softirq.c:372 [inline] softirqs last disabled at (9117): [] irq_exit+0x215/0x260 kernel/softirq.c:412 ---[ end trace 7da57833739bf566 ]--- Kernel Offset: disabled Rebooting in 86400 seconds..