[ OK ] Started Getty on tty2. [ OK ] Started Getty on tty1. [ OK ] Started Serial Getty on ttyS0. [ 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 '10.128.0.193' (ECDSA) to the list of known hosts. executing program executing program syzkaller login: [ 57.410534][ T7041] binder: 7039:7041 unknown command 553631744 [ 57.416725][ T7041] binder: 7039:7041 ioctl c0306201 20000540 returned -22 [ 57.477286][ T7043] ------------[ cut here ]------------ [ 57.482797][ T7043] WARNING: CPU: 1 PID: 7043 at drivers/android/binder.c:2348 binder_transaction_buffer_release+0x601/0x8a0 [ 57.494188][ T7043] Kernel panic - not syncing: panic_on_warn set ... [ 57.500803][ T7043] CPU: 1 PID: 7043 Comm: syz-executor231 Not tainted 5.7.0-rc7-syzkaller #0 [ 57.509466][ T7043] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 57.519500][ T7043] Call Trace: [ 57.522790][ T7043] dump_stack+0x188/0x20d [ 57.527134][ T7043] ? binder_transaction_buffer_release+0x590/0x8a0 [ 57.533616][ T7043] panic+0x2e3/0x75c [ 57.537492][ T7043] ? add_taint.cold+0x16/0x16 [ 57.542156][ T7043] ? printk+0xba/0xed [ 57.546117][ T7043] ? kmsg_dump_rewind_nolock+0xd9/0xd9 [ 57.551556][ T7043] ? __warn.cold+0x14/0x35 [ 57.555953][ T7043] ? __warn+0xd5/0x1c8 [ 57.560003][ T7043] ? binder_transaction_buffer_release+0x601/0x8a0 [ 57.566483][ T7043] __warn.cold+0x2f/0x35 [ 57.570729][ T7043] ? binder_transaction_buffer_release+0x601/0x8a0 [ 57.577225][ T7043] report_bug+0x27b/0x2f0 [ 57.581537][ T7043] do_error_trap+0x12b/0x220 [ 57.586123][ T7043] ? binder_transaction_buffer_release+0x601/0x8a0 [ 57.592622][ T7043] do_invalid_op+0x32/0x40 [ 57.597037][ T7043] ? binder_transaction_buffer_release+0x601/0x8a0 [ 57.603552][ T7043] invalid_op+0x23/0x30 [ 57.607714][ T7043] RIP: 0010:binder_transaction_buffer_release+0x601/0x8a0 [ 57.614824][ T7043] Code: bb fd 31 ff 41 89 c5 89 c6 e8 cb fe 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 3f fd 81 fb <0f> 0b e9 87 fc ff ff e8 33 fd 81 fb 4c 8b 44 24 20 48 89 d8 45 31 [ 57.634420][ T7043] RSP: 0018:ffffc900017a7620 EFLAGS: 00010293 [ 57.640481][ T7043] RAX: ffff888091eb2040 RBX: 0000000000000058 RCX: 1ffff110123d64ab [ 57.648440][ T7043] RDX: 0000000000000000 RSI: ffffffff85f14171 RDI: ffff8880974ec848 [ 57.656407][ T7043] RBP: ffff88809f427380 R08: ffff888091eb2040 R09: fffff520002f4ee7 [ 57.664372][ T7043] R10: ffffc900017a7737 R11: fffff520002f4ee6 R12: ffff8880a32084c0 [ 57.672337][ T7043] R13: 0000000000000060 R14: ffff8880974ec800 R15: 0000000000000060 [ 57.680324][ T7043] ? binder_transaction_buffer_release+0x601/0x8a0 [ 57.686818][ T7043] ? binder_update_ref_for_handle+0x490/0x490 [ 57.692880][ T7043] ? binder_translate_fd.isra.0+0x175/0x7b0 [ 57.698791][ T7043] ? trace_hardirqs_off+0x50/0x220 [ 57.703887][ T7043] ? trace_hardirqs_off+0x50/0x220 [ 57.708986][ T7043] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 57.714524][ T7043] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 57.720495][ T7043] ? binder_free_txn_fixups+0x15a/0x230 [ 57.726023][ T7043] binder_transaction+0x146d/0x6500 [ 57.731227][ T7043] ? mark_held_locks+0xe0/0xe0 [ 57.736007][ T7043] ? binder_deferred_func+0xfc0/0xfc0 [ 57.741374][ T7043] ? stack_trace_consume_entry+0x160/0x160 [ 57.747179][ T7043] ? find_held_lock+0x2d/0x110 [ 57.751937][ T7043] ? __might_fault+0x11f/0x1d0 [ 57.756703][ T7043] ? lock_downgrade+0x840/0x840 [ 57.761553][ T7043] ? __might_fault+0x190/0x1d0 [ 57.766314][ T7043] binder_thread_write+0x818/0x2560 [ 57.771522][ T7043] ? binder_transaction+0x6500/0x6500 [ 57.776876][ T7043] ? __might_fault+0x11f/0x1d0 [ 57.781631][ T7043] ? lock_downgrade+0x840/0x840 [ 57.786459][ T7043] ? do_raw_spin_lock+0x129/0x2e0 [ 57.791477][ T7043] ? __might_fault+0x190/0x1d0 [ 57.796230][ T7043] binder_ioctl+0x1008/0x1862 [ 57.800888][ T7043] ? do_vfs_ioctl+0x50c/0x1360 [ 57.805632][ T7043] ? binder_thread_read+0x3bd0/0x3bd0 [ 57.810992][ T7043] ? ioctl_file_clone+0x180/0x180 [ 57.816012][ T7043] ? __fget_files+0x32f/0x500 [ 57.820672][ T7043] ? ksys_dup3+0x3c0/0x3c0 [ 57.825099][ T7043] ? binder_thread_read+0x3bd0/0x3bd0 [ 57.830449][ T7043] ksys_ioctl+0x11a/0x180 [ 57.834773][ T7043] __x64_sys_ioctl+0x6f/0xb0 [ 57.839340][ T7043] ? lockdep_hardirqs_on+0x463/0x620 [ 57.844621][ T7043] do_syscall_64+0xf6/0x7d0 [ 57.849133][ T7043] entry_SYSCALL_64_after_hwframe+0x49/0xb3 [ 57.855072][ T7043] RIP: 0033:0x44b5d9 [ 57.858946][ T7043] Code: e8 8c b5 02 00 48 83 c4 18 c3 0f 1f 80 00 00 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 2b cc fb ff c3 66 2e 0f 1f 84 00 00 00 00 [ 57.878666][ T7043] RSP: 002b:00007fc87b5eace8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 57.887089][ T7043] RAX: ffffffffffffffda RBX: 00000000006dcc48 RCX: 000000000044b5d9 [ 57.895038][ T7043] RDX: 0000000020000540 RSI: 00000000c0306201 RDI: 0000000000000003 [ 57.902989][ T7043] RBP: 00000000006dcc40 R08: 0000000000000000 R09: 0000000000000000 [ 57.910941][ T7043] R10: 0000000000000000 R11: 0000000000000246 R12: 00000000006dcc4c [ 57.918892][ T7043] R13: 00007ffc8061ed5f R14: 00007fc87b5eb9c0 R15: 20c49ba5e353f7cf [ 57.928130][ T7043] Kernel Offset: disabled [ 57.932514][ T7043] Rebooting in 86400 seconds..