[ OK ] Started Getty on tty2. [ OK ] Started Serial Getty on ttyS0. [ OK ] Started Getty on tty1. [ OK ] Reached target Login Prompts. [ OK ] Reached target Multi-User System. [ OK ] Reached target Graphical Interface. Starting Update UTMP about System Runlevel Changes... [ OK ] Started Update UTMP about System Runlevel Changes. Starting Load/Save RF Kill Switch Status... [ OK ] Started Load/Save RF Kill Switch Status. Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.15.206' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 54.749541][ T7181] ------------[ cut here ]------------ [ 54.755083][ T7181] WARNING: CPU: 1 PID: 7181 at drivers/android/binder.c:2348 binder_transaction_buffer_release+0x601/0x8a0 [ 54.766418][ T7181] Kernel panic - not syncing: panic_on_warn set ... [ 54.773016][ T7181] CPU: 1 PID: 7181 Comm: syz-executor960 Not tainted 5.7.0-rc6-syzkaller #0 [ 54.781656][ T7181] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 54.791682][ T7181] Call Trace: [ 54.794953][ T7181] dump_stack+0x188/0x20d [ 54.799299][ T7181] ? binder_transaction_buffer_release+0x510/0x8a0 [ 54.805783][ T7181] panic+0x2e3/0x75c [ 54.809693][ T7181] ? add_taint.cold+0x16/0x16 [ 54.814346][ T7181] ? printk+0xba/0xed [ 54.818301][ T7181] ? kmsg_dump_rewind_nolock+0xd9/0xd9 [ 54.823752][ T7181] ? __warn.cold+0x14/0x35 [ 54.828167][ T7181] ? __warn+0xd5/0x1c8 [ 54.832227][ T7181] ? binder_transaction_buffer_release+0x601/0x8a0 [ 54.838716][ T7181] __warn.cold+0x2f/0x35 [ 54.842939][ T7181] ? binder_transaction_buffer_release+0x601/0x8a0 [ 54.849431][ T7181] report_bug+0x27b/0x2f0 [ 54.853750][ T7181] do_error_trap+0x12b/0x220 [ 54.858316][ T7181] ? binder_transaction_buffer_release+0x601/0x8a0 [ 54.864824][ T7181] do_invalid_op+0x32/0x40 [ 54.869218][ T7181] ? binder_transaction_buffer_release+0x601/0x8a0 [ 54.875761][ T7181] invalid_op+0x23/0x30 [ 54.879927][ T7181] RIP: 0010:binder_transaction_buffer_release+0x601/0x8a0 [ 54.887048][ T7181] Code: bb fd 31 ff 41 89 c5 89 c6 e8 bb ff 81 fb 45 85 ed 0f 85 f9 4b 01 00 48 8d 45 40 48 89 44 24 28 e9 fa fa ff ff e8 2f fe 81 fb <0f> 0b e9 87 fc ff ff e8 23 fe 81 fb 4c 8b 44 24 20 48 89 d8 45 31 [ 54.906628][ T7181] RSP: 0018:ffffc900018a7608 EFLAGS: 00010293 [ 54.912684][ T7181] RAX: ffff888094108000 RBX: 0000000000000058 RCX: 1ffff110128210a3 [ 54.920628][ T7181] RDX: 0000000000000000 RSI: ffffffff85f136f1 RDI: ffff8880a7715848 [ 54.928582][ T7181] RBP: ffff88809f2cb180 R08: ffff888094108000 R09: fffff52000314ee4 [ 54.936537][ T7181] R10: ffffc900018a771f R11: fffff52000314ee3 R12: ffff8880997e2600 [ 54.944482][ T7181] R13: 0000000000000060 R14: ffff8880a7715800 R15: 0000000000000060 [ 54.952454][ T7181] ? binder_transaction_buffer_release+0x601/0x8a0 [ 54.958941][ T7181] ? binder_transaction_buffer_release+0x601/0x8a0 [ 54.965419][ T7181] ? binder_update_ref_for_handle+0x490/0x490 [ 54.971458][ T7181] ? binder_translate_fd.isra.0+0x175/0x7b0 [ 54.977325][ T7181] ? trace_hardirqs_off+0x50/0x220 [ 54.982410][ T7181] ? trace_hardirqs_off+0x50/0x220 [ 54.987523][ T7181] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 54.993040][ T7181] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 54.998990][ T7181] ? binder_free_txn_fixups+0x15a/0x230 [ 55.004510][ T7181] binder_transaction+0x146d/0x6500 [ 55.009695][ T7181] ? mark_held_locks+0xe0/0xe0 [ 55.014445][ T7181] ? binder_deferred_func+0xfc0/0xfc0 [ 55.019803][ T7181] ? stack_trace_save+0x8c/0xc0 [ 55.024632][ T7181] ? find_held_lock+0x2d/0x110 [ 55.029369][ T7181] ? __might_fault+0x11f/0x1d0 [ 55.034108][ T7181] ? lock_downgrade+0x840/0x840 [ 55.038963][ T7181] ? __might_fault+0x190/0x1d0 [ 55.043713][ T7181] binder_thread_write+0x818/0x2560 [ 55.048909][ T7181] ? binder_transaction+0x6500/0x6500 [ 55.054253][ T7181] ? __might_fault+0x11f/0x1d0 [ 55.059078][ T7181] ? lock_downgrade+0x840/0x840 [ 55.063902][ T7181] ? do_raw_spin_lock+0x129/0x2e0 [ 55.068904][ T7181] ? binder_thread_read+0x3bd0/0x3bd0 [ 55.074254][ T7181] ? __might_fault+0x190/0x1d0 [ 55.078993][ T7181] binder_ioctl+0x1008/0x1862 [ 55.083659][ T7181] ? __sanitizer_cov_trace_switch+0x45/0x70 [ 55.089521][ T7181] ? binder_thread_read+0x3bd0/0x3bd0 [ 55.094882][ T7181] ? do_vfs_ioctl+0x50c/0x1360 [ 55.099805][ T7181] ? ioctl_file_clone+0x180/0x180 [ 55.104808][ T7181] ? __fget_files+0x32f/0x500 [ 55.109476][ T7181] ? unlock_page_memcg+0x30/0x30 [ 55.114390][ T7181] ? binder_thread_read+0x3bd0/0x3bd0 [ 55.119732][ T7181] compat_ptr_ioctl+0x67/0x90 [ 55.124392][ T7181] ? fiemap_check_flags+0x70/0x70 [ 55.129474][ T7181] __ia32_compat_sys_ioctl+0x23d/0x2b0 [ 55.134913][ T7181] do_fast_syscall_32+0x270/0xe90 [ 55.139930][ T7181] entry_SYSENTER_compat+0x70/0x7f [ 55.146353][ T7181] Kernel Offset: disabled [ 55.150748][ T7181] Rebooting in 86400 seconds..