[ OK ] Started Getty on tty5. [ OK ] Started Getty on tty4. [ OK ] Started Getty on tty3. [ OK ] Started Serial Getty on ttyS0. [ OK ] Started Getty on tty1. [ OK ] Started Getty on tty2. [ OK ] Reached target Login Prompts. [ OK ] Reached target Multi-User System. [ OK ] Reached target Graphical Interface. Starting Update UTMP about System Runlevel Changes... Starting Load/Save RF Kill Switch Status... [ OK ] Started Update UTMP about System Runlevel Changes. [ OK ] Started Load/Save RF Kill Switch Status. Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.1.8' (ECDSA) to the list of known hosts. executing program executing program executing program executing program executing program executing program syzkaller login: [ 32.396282] Page cache invalidation failure on direct I/O. Possible data corruption due to collision with buffered I/O! [ 32.408502] File: /root/memory.events PID: 8155 Comm: syz-executor410 [ 32.430463] Page cache invalidation failure on direct I/O. Possible data corruption due to collision with buffered I/O! [ 32.441774] File: /root/memory.events PID: 8150 Comm: syz-executor410 executing program executing program executing program executing program executing program executing program [ 32.703282] Page cache invalidation failure on direct I/O. Possible data corruption due to collision with buffered I/O! [ 32.714546] File: /root/memory.events PID: 8178 Comm: syz-executor410 executing program executing program executing program executing program executing program executing program [ 32.974680] Page cache invalidation failure on direct I/O. Possible data corruption due to collision with buffered I/O! [ 32.990894] File: /root/memory.events PID: 8206 Comm: syz-executor410 executing program executing program executing program executing program executing program executing program executing program [ 33.230049] Page cache invalidation failure on direct I/O. Possible data corruption due to collision with buffered I/O! [ 33.242569] File: /root/memory.events PID: 8230 Comm: syz-executor410 [ 33.273766] WARNING: CPU: 1 PID: 8234 at fs/ext4/inode.c:3942 ext4_set_page_dirty+0x2a4/0x370 [ 33.282523] Kernel panic - not syncing: panic_on_warn set ... [ 33.282523] [ 33.289903] CPU: 1 PID: 8234 Comm: syz-executor410 Not tainted 4.19.211-syzkaller #0 [ 33.297770] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 33.307277] Call Trace: [ 33.309853] dump_stack+0x1fc/0x2ef [ 33.313473] panic+0x26a/0x50e [ 33.316661] ? __warn_printk+0xf3/0xf3 [ 33.320551] ? ext4_set_page_dirty+0x2a4/0x370 [ 33.325122] ? __probe_kernel_read+0x130/0x1b0 [ 33.329773] ? __warn.cold+0x5/0x5a [ 33.333382] ? __warn+0xe4/0x200 [ 33.336746] ? ext4_set_page_dirty+0x2a4/0x370 [ 33.341317] __warn.cold+0x20/0x5a [ 33.344843] ? ext4_set_page_dirty+0x2a4/0x370 [ 33.349497] report_bug+0x262/0x2b0 [ 33.353110] do_error_trap+0x1d7/0x310 [ 33.357069] ? math_error+0x310/0x310 [ 33.360857] ? reacquire_held_locks+0xb5/0x430 [ 33.365426] ? error_entry+0x72/0xd0 [ 33.369128] ? trace_hardirqs_off_caller+0x6e/0x210 [ 33.374149] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 33.378992] invalid_op+0x14/0x20 [ 33.382434] RIP: 0010:ext4_set_page_dirty+0x2a4/0x370 [ 33.387610] 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 [ 33.406713] RSP: 0018:ffff888094c9fc10 EFLAGS: 00010293 [ 33.412079] RAX: ffff8880b07c2300 RBX: 0000000000000000 RCX: ffffffff81de75ce [ 33.419337] RDX: 0000000000000000 RSI: ffffffff81de7654 RDI: 0000000000000001 [ 33.426589] RBP: ffffea00022a2640 R08: 0000000000000001 R09: 0000000000000000 [ 33.433844] R10: 0000000000000001 R11: 0000000000000000 R12: 0000000000000000 [ 33.441097] R13: ffffea00022a2108 R14: ffffea00022a2108 R15: 0000000000000008 [ 33.448367] ? ext4_set_page_dirty+0x21e/0x370 [ 33.452942] ? ext4_set_page_dirty+0x2a4/0x370 [ 33.457527] ? ext4_readpages+0x110/0x110 [ 33.461659] set_page_dirty+0x25f/0x640 [ 33.465632] set_page_dirty_lock+0x81/0xc0 [ 33.469869] xdp_umem_unpin_pages+0x10a/0x3a0 [ 33.474352] xdp_umem_create+0xb60/0xea0 [ 33.478401] xsk_setsockopt+0x491/0x5a0 [ 33.482360] ? xsk_sendmsg+0xfa0/0xfa0 [ 33.486229] ? aa_af_perm+0x230/0x230 [ 33.490033] __sys_setsockopt+0x14d/0x240 [ 33.494170] ? kernel_accept+0x310/0x310 [ 33.498218] ? up_read+0x17/0x110 [ 33.501673] ? entry_SYSCALL_64_after_hwframe+0x3e/0xbe [ 33.507032] __x64_sys_setsockopt+0xba/0x150 [ 33.511425] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 33.515991] do_syscall_64+0xf9/0x620 [ 33.519779] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 33.524956] RIP: 0033:0x7f91993bbdb9 [ 33.528655] 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 [ 33.547537] RSP: 002b:00007f919932b2f8 EFLAGS: 00000246 ORIG_RAX: 0000000000000036 [ 33.555228] RAX: ffffffffffffffda RBX: 00007f9199444508 RCX: 00007f91993bbdb9 [ 33.562480] RDX: 0000000000000004 RSI: 000000000000011b RDI: 0000000000000006 [ 33.569739] RBP: 00007f9199444500 R08: 0000000000000020 R09: 0000000000000000 [ 33.576991] R10: 0000000020000040 R11: 0000000000000246 R12: 00007f919944450c [ 33.584365] R13: 00007f919941107c R14: 652e79726f6d656d R15: 0000000000022000 [ 33.591873] Kernel Offset: disabled [ 33.595536] Rebooting in 86400 seconds..