[ 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 '10.128.0.195' (ECDSA) to the list of known hosts. executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program syzkaller login: [ 32.939402] Page cache invalidation failure on direct I/O. Possible data corruption due to collision with buffered I/O! [ 32.951381] File: /root/memory.events PID: 8246 Comm: syz-executor769 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 33.269118] WARNING: CPU: 0 PID: 8386 at fs/ext4/inode.c:3942 ext4_set_page_dirty+0x2a4/0x370 [ 33.277913] Kernel panic - not syncing: panic_on_warn set ... [ 33.277913] [ 33.285268] CPU: 0 PID: 8386 Comm: syz-executor769 Not tainted 4.19.211-syzkaller #0 [ 33.293135] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 33.302482] Call Trace: [ 33.305058] dump_stack+0x1fc/0x2ef [ 33.308676] panic+0x26a/0x50e [ 33.311856] ? __warn_printk+0xf3/0xf3 [ 33.315746] ? ext4_set_page_dirty+0x2a4/0x370 [ 33.320314] ? __probe_kernel_read+0x130/0x1b0 [ 33.324883] ? __warn.cold+0x5/0x5a [ 33.328505] ? __warn+0xe4/0x200 [ 33.331861] ? ext4_set_page_dirty+0x2a4/0x370 [ 33.336430] __warn.cold+0x20/0x5a [ 33.339958] ? ext4_set_page_dirty+0x2a4/0x370 [ 33.344540] report_bug+0x262/0x2b0 [ 33.348155] do_error_trap+0x1d7/0x310 [ 33.352047] ? math_error+0x310/0x310 [ 33.355833] ? debug_check_no_obj_freed+0x201/0x490 [ 33.360931] ? error_entry+0x72/0xd0 [ 33.364634] ? trace_hardirqs_off_caller+0x6e/0x210 [ 33.369638] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 33.374470] invalid_op+0x14/0x20 [ 33.377912] RIP: 0010:ext4_set_page_dirty+0x2a4/0x370 [ 33.383084] Code: ff e8 40 0f 84 ff 49 8d 5d ff e9 27 fe ff ff e8 32 0f 84 ff 48 c7 c6 e0 54 7a 88 48 89 ef e8 e3 a0 ab ff 0f 0b e8 1c 0f 84 ff <0f> 0b e9 77 ff ff ff e8 10 0f 84 ff 4c 8b 65 08 31 ff 4c 89 e3 83 [ 33.401968] RSP: 0018:ffff88809208fc10 EFLAGS: 00010293 [ 33.407320] RAX: ffff8880afa8a2c0 RBX: 0000000000000000 RCX: ffffffff81de75ce [ 33.414579] RDX: 0000000000000000 RSI: ffffffff81de7654 RDI: 0000000000000001 [ 33.421835] RBP: ffffea00023b2e80 R08: ffffed10118efe00 R09: 0000000000000000 [ 33.429091] R10: 0000000000000001 R11: 0000000000000000 R12: 0000000000000000 [ 33.436429] R13: ffffea000240ed48 R14: ffffea000240ed48 R15: 0000000000000001 [ 33.443696] ? ext4_set_page_dirty+0x21e/0x370 [ 33.448273] ? ext4_set_page_dirty+0x2a4/0x370 [ 33.452845] ? ext4_readpages+0x110/0x110 [ 33.456980] set_page_dirty+0x25f/0x640 [ 33.460945] set_page_dirty_lock+0x81/0xc0 [ 33.465181] xdp_umem_unpin_pages+0x10a/0x3a0 [ 33.469668] xdp_umem_create+0xb60/0xea0 [ 33.473721] xsk_setsockopt+0x491/0x5a0 [ 33.477682] ? xsk_sendmsg+0xfa0/0xfa0 [ 33.481567] ? aa_af_perm+0x230/0x230 [ 33.485368] __sys_setsockopt+0x14d/0x240 [ 33.489504] ? kernel_accept+0x310/0x310 [ 33.493551] ? up_read+0x17/0x110 [ 33.496995] ? entry_SYSCALL_64_after_hwframe+0x3e/0xbe [ 33.502351] __x64_sys_setsockopt+0xba/0x150 [ 33.506744] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 33.511313] do_syscall_64+0xf9/0x620 [ 33.515103] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 33.520282] RIP: 0033:0x7fdc8ed0ad89 [ 33.523980] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 11 15 00 00 90 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 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [ 33.542866] RSP: 002b:00007fdc8ecbc308 EFLAGS: 00000246 ORIG_RAX: 0000000000000036 [ 33.550557] RAX: ffffffffffffffda RBX: 00007fdc8ed934e8 RCX: 00007fdc8ed0ad89 [ 33.557811] RDX: 0000000000000004 RSI: 000000000000011b RDI: 0000000000000006 [ 33.565062] RBP: 00007fdc8ed934e0 R08: 0000000000000020 R09: 0000000000000000 [ 33.572325] R10: 0000000020000040 R11: 0000000000000246 R12: 00007fdc8ed934ec [ 33.579591] R13: 00007fdc8ed6007c R14: 652e79726f6d656d R15: 0000000000022000 [ 33.587194] Kernel Offset: disabled [ 33.590860] Rebooting in 86400 seconds..