Warning: Permanently added '10.128.0.72' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 192.572451] audit: type=1400 audit(1599258952.543:8): avc: denied { execmem } for pid=6384 comm="syz-executor186" scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=process permissive=1 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 249.431171] DEBUG_LOCKS_WARN_ON(depth <= 0) [ 249.431174] ------------[ cut here ]------------ [ 249.431177] WARNING: CPU: 0 PID: 9859 at kernel/locking/lockdep.c:3760 lock_release.cold+0x13/0xbf [ 249.431178] Kernel panic - not syncing: panic_on_warn set ... [ 249.431179] [ 249.431181] CPU: 0 PID: 9859 Comm: syz-executor186 Not tainted 4.14.196-syzkaller #0 [ 249.431183] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 249.431184] Call Trace: [ 249.431185] dump_stack+0x1b2/0x283 [ 249.431186] panic+0x1f9/0x42d [ 249.431187] ? add_taint.cold+0x16/0x16 [ 249.431189] ? lock_release.cold+0x13/0xbf [ 249.431190] ? lock_release.cold+0x13/0xbf [ 249.431191] __warn.cold+0x20/0x4b [ 249.431192] ? ist_end_non_atomic+0x10/0x10 [ 249.431193] ? lock_release.cold+0x13/0xbf [ 249.431194] report_bug+0x208/0x249 [ 249.431195] do_error_trap+0x195/0x2d0 [ 249.431196] ? math_error+0x2d0/0x2d0 [ 249.431198] ? printk_safe_log_store+0x127/0x1a0 [ 249.431199] ? __printk_safe_flush+0x2e0/0x2e0 [ 249.431200] ? __lock_acquire+0x5fc/0x3f20 [ 249.431201] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 249.431202] invalid_op+0x1b/0x40 [ 249.431203] RIP: 0010:lock_release.cold+0x13/0xbf [ 249.431205] RSP: 0018:ffff8880001273f0 EFLAGS: 00010082 [ 249.431207] RAX: 000000000000001f RBX: 1ffff11000024e81 RCX: 0000000000000000 [ 249.431209] RDX: 0000000000000000 RSI: 00000000000000f6 RDI: ffffed1000024e74 [ 249.431211] RBP: ffffffff87d7c880 R08: 000000000000001f R09: ffffed1015d442f7 [ 249.431213] R10: ffff8880aea217be R11: ffff888000118140 R12: ffffffff8348237f [ 249.431214] R13: ffffffff8a5a5c00 R14: ffff888000118140 R15: 0000000000000000 [ 249.431215] ? do_con_write+0xb2f/0x19b0 [ 249.431216] ? lock_acquire+0x170/0x3f0 [ 249.431218] ? lock_downgrade+0x740/0x740 [ 249.431219] ? do_con_write+0xb2f/0x19b0 [ 249.431220] __up_console_sem+0x1e/0x1b0 [ 249.431221] console_unlock+0x531/0xf20 [ 249.431222] ? lock_downgrade+0x740/0x740 [ 249.431223] ? fb_flashcursor+0x400/0x400 [ 249.431225] do_con_write+0xb2f/0x19b0 [ 249.431226] ? do_con_trol+0x51e0/0x51e0 [ 249.431227] ? __mutex_unlock_slowpath+0x75/0x770 [ 249.431228] ? wait_for_completion_io+0x10/0x10 [ 249.431229] ? con_write+0x90/0xa0 [ 249.431230] con_write+0x21/0xa0 [ 249.431231] n_tty_write+0x352/0xda0 [ 249.431233] ? lock_acquire+0x170/0x3f0 [ 249.431234] ? n_tty_open+0x160/0x160 [ 249.431235] ? do_wait_intr_irq+0x270/0x270 [ 249.431236] ? __might_fault+0xf/0x1b0 [ 249.431237] tty_write+0x410/0x740 [ 249.431238] ? n_tty_open+0x160/0x160 [ 249.431239] __vfs_write+0xe4/0x630 [ 249.431240] ? tty_compat_ioctl+0x240/0x240 [ 249.431242] ? iov_iter_advance+0x6f1/0xbe0 [ 249.431243] ? kernel_read+0x110/0x110 [ 249.431244] ? trace_hardirqs_on_caller+0x3a8/0x580 [ 249.431245] ? default_file_splice_read+0x5ba/0x910 [ 249.431246] ? alloc_pipe_info+0x140/0x3c0 [ 249.431247] __kernel_write+0xf5/0x330 [ 249.431249] write_pipe_buf+0x143/0x1c0 [ 249.431250] ? default_file_splice_read+0x910/0x910 [ 249.431251] __splice_from_pipe+0x326/0x7a0 [ 249.431252] ? default_file_splice_read+0x910/0x910 [ 249.431254] default_file_splice_write+0xc5/0x150 [ 249.431255] ? generic_splice_sendpage+0x110/0x110 [ 249.431256] ? rw_verify_area+0xe1/0x2a0 [ 249.431257] ? generic_splice_sendpage+0x110/0x110 [ 249.431259] direct_splice_actor+0x115/0x160 [ 249.431260] splice_direct_to_actor+0x27c/0x730 [ 249.431261] ? generic_pipe_buf_nosteal+0x10/0x10 [ 249.431262] ? do_splice_to+0x140/0x140 [ 249.431263] ? rw_verify_area+0xe1/0x2a0 [ 249.431264] do_splice_direct+0x164/0x210 [ 249.431266] ? splice_direct_to_actor+0x730/0x730 [ 249.431267] ? rw_verify_area+0xe1/0x2a0 [ 249.431268] do_sendfile+0x47f/0xb30 [ 249.431269] ? do_compat_writev+0x180/0x180 [ 249.431270] ? SyS_futex+0x1da/0x290 [ 249.431271] SyS_sendfile64+0xff/0x110 [ 249.431272] ? SyS_sendfile+0x130/0x130 [ 249.431273] ? do_syscall_64+0x4c/0x640 [ 249.431274] ? SyS_sendfile+0x130/0x130 [ 249.431276] do_syscall_64+0x1d5/0x640 [ 249.431277] entry_SYSCALL_64_after_hwframe+0x46/0xbb [ 249.431278] RIP: 0033:0x446f99 [ 249.431279] RSP: 002b:00007fb7a52ced18 EFLAGS: 00000246 ORIG_RAX: 0000000000000028 [ 249.431282] RAX: ffffffffffffffda RBX: 00000000006dcc58 RCX: 0000000000446f99 [ 249.431284] RDX: 0000000000000000 RSI: 0000000000000005 RDI: 0000000000000004 [ 249.431285] RBP: 00000000006dcc50 R08: 65732f636f72702f R09: 65732f636f72702f [ 249.431287] R10: 0800000080004101 R11: 0000000000000246 R12: 00000000006dcc5c [ 249.431289] R13: 00007fb7a52ced20 R14: 00007fb7a52ced20 R15: 20c49ba5e353f7cf [ 249.432363] Kernel Offset: disabled