[ 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. Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.1.106' (ECDSA) to the list of known hosts. executing program executing program executing program executing program executing program executing program syzkaller login: [ 30.543768] EXT4-fs (loop2): mounted filesystem without journal. Opts: ,errors=continue [ 30.553835] EXT4-fs (loop0): mounted filesystem without journal. Opts: ,errors=continue [ 30.564584] EXT4-fs (loop4): mounted filesystem without journal. Opts: ,errors=continue [ 30.581529] EXT4-fs (loop5): mounted filesystem without journal. Opts: ,errors=continue [ 30.593106] EXT4-fs (loop1): mounted filesystem without journal. Opts: ,errors=continue [ 30.610374] EXT4-fs (loop3): mounted filesystem without journal. Opts: ,errors=continue executing program executing program executing program executing program executing program executing program [ 30.926983] EXT4-fs (loop4): mounted filesystem without journal. Opts: ,errors=continue [ 30.936758] EXT4-fs (loop5): mounted filesystem without journal. Opts: ,errors=continue [ 30.940389] EXT4-fs (loop2): mounted filesystem without journal. Opts: ,errors=continue [ 30.951542] EXT4-fs (loop1): mounted filesystem without journal. Opts: ,errors=continue [ 30.965707] EXT4-fs (loop0): mounted filesystem without journal. Opts: ,errors=continue [ 31.000960] EXT4-fs (loop3): mounted filesystem without journal. Opts: ,errors=continue [ 31.012041] print_req_error: I/O error, dev loop2, sector 24 executing program executing program [ 31.044812] EXT4-fs (loop5): mounted filesystem without journal. Opts: ,errors=continue [ 31.047766] EXT4-fs (loop2): mounted filesystem without journal. Opts: ,errors=continue executing program [ 31.097929] EXT4-fs (loop0): mounted filesystem without journal. Opts: ,errors=continue executing program [ 31.152044] EXT4-fs (loop5): mounted filesystem without journal. Opts: ,errors=continue [ 31.162340] EXT4-fs (loop1): mounted filesystem without journal. Opts: ,errors=continue executing program executing program executing program [ 31.244824] EXT4-fs (loop4): mounted filesystem without journal. Opts: ,errors=continue [ 31.263834] EXT4-fs (loop3): mounted filesystem without journal. Opts: ,errors=continue executing program executing program [ 31.317633] EXT4-fs (loop0): mounted filesystem without journal. Opts: ,errors=continue [ 31.327504] EXT4-fs (loop2): mounted filesystem without journal. Opts: ,errors=continue executing program executing program [ 31.375404] EXT4-fs (loop1): mounted filesystem without journal. Opts: ,errors=continue [ 31.415270] EXT4-fs (loop5): mounted filesystem without journal. Opts: ,errors=continue executing program [ 31.446946] EXT4-fs (loop4): mounted filesystem without journal. Opts: ,errors=continue [ 31.460484] EXT4-fs (loop3): mounted filesystem without journal. Opts: ,errors=continue executing program executing program executing program [ 31.600713] EXT4-fs (loop2): mounted filesystem without journal. Opts: ,errors=continue [ 31.611164] EXT4-fs (loop0): mounted filesystem without journal. Opts: ,errors=continue executing program executing program executing program [ 31.721255] EXT4-fs (loop4): mounted filesystem without journal. Opts: ,errors=continue [ 31.729620] EXT4-fs (loop1): mounted filesystem without journal. Opts: ,errors=continue [ 31.741548] EXT4-fs (loop5): mounted filesystem without journal. Opts: ,errors=continue [ 31.758226] EXT4-fs (loop3): mounted filesystem without journal. Opts: ,errors=continue executing program executing program executing program executing program [ 31.935275] EXT4-fs (loop0): mounted filesystem without journal. Opts: ,errors=continue [ 31.944095] EXT4-fs (loop2): mounted filesystem without journal. Opts: ,errors=continue [ 31.960820] EXT4-fs (loop1): mounted filesystem without journal. Opts: ,errors=continue [ 31.970959] EXT4-fs (loop5): mounted filesystem without journal. Opts: ,errors=continue [ 31.970964] EXT4-fs (loop4): mounted filesystem without journal. Opts: ,errors=continue executing program executing program executing program executing program executing program [ 32.173831] EXT4-fs (loop3): mounted filesystem without journal. Opts: ,errors=continue [ 32.196055] EXT4-fs (loop0): mounted filesystem without journal. Opts: ,errors=continue [ 32.196946] EXT4-fs (loop2): mounted filesystem without journal. Opts: ,errors=continue executing program [ 32.227213] EXT4-fs (loop5): mounted filesystem without journal. Opts: ,errors=continue [ 32.241187] EXT4-fs (loop1): mounted filesystem without journal. Opts: ,errors=continue executing program executing program [ 32.341516] EXT4-fs (loop4): mounted filesystem without journal. Opts: ,errors=continue executing program executing program [ 32.420550] EXT4-fs (loop0): mounted filesystem without journal. Opts: ,errors=continue executing program executing program [ 32.476744] EXT4-fs (loop3): mounted filesystem without journal. Opts: ,errors=continue [ 32.487616] EXT4-fs (loop5): mounted filesystem without journal. Opts: ,errors=continue executing program [ 32.553818] EXT4-fs (loop2): mounted filesystem without journal. Opts: ,errors=continue [ 32.565653] EXT4-fs (loop1): mounted filesystem without journal. Opts: ,errors=continue [ 32.580024] EXT4-fs (loop4): mounted filesystem without journal. Opts: ,errors=continue executing program executing program executing program executing program [ 32.697897] EXT4-fs (loop0): mounted filesystem without journal. Opts: ,errors=continue [ 32.732573] EXT4-fs (loop5): mounted filesystem without journal. Opts: ,errors=continue executing program executing program [ 32.818502] EXT4-fs (loop3): mounted filesystem without journal. Opts: ,errors=continue executing program [ 32.910694] EXT4-fs (loop1): mounted filesystem without journal. Opts: ,errors=continue [ 32.920977] EXT4-fs (loop4): mounted filesystem without journal. Opts: ,errors=continue [ 32.930841] EXT4-fs (loop2): mounted filesystem without journal. Opts: ,errors=continue executing program [ 32.986513] EXT4-fs (loop0): mounted filesystem without journal. Opts: ,errors=continue [ 33.002036] EXT4-fs (loop5): mounted filesystem without journal. Opts: ,errors=continue [ 33.020006] EXT4-fs (loop3): mounted filesystem without journal. Opts: ,errors=continue executing program executing program executing program executing program [ 33.163359] EXT4-fs (loop2): mounted filesystem without journal. Opts: ,errors=continue executing program executing program [ 33.235812] EXT4-fs (loop5): mounted filesystem without journal. Opts: ,errors=continue [ 33.246474] EXT4-fs (loop4): mounted filesystem without journal. Opts: ,errors=continue [ 33.259227] EXT4-fs (loop1): mounted filesystem without journal. Opts: ,errors=continue [ 33.260935] EXT4-fs (loop0): mounted filesystem without journal. Opts: ,errors=continue executing program [ 33.361423] EXT4-fs (loop3): mounted filesystem without journal. Opts: ,errors=continue executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 33.727774] print_req_error: I/O error, dev loop4, sector 24 executing program executing program executing program executing program executing program executing program executing program [ 34.106367] EXT4-fs: failed to create workqueue [ 34.115486] EXT4-fs (loop4): mount failed executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 35.017101] print_req_error: I/O error, dev loop2, sector 24 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 35.498546] EXT4-fs: failed to create workqueue [ 35.503483] EXT4-fs (loop2): mount failed executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 36.605364] print_req_error: I/O error, dev loop1, sector 24 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 37.958483] ------------[ cut here ]------------ [ 37.963535] kernel BUG at fs/ext4/inline.c:757! executing program [ 38.017101] invalid opcode: 0000 [#1] PREEMPT SMP KASAN [ 38.022517] Modules linked in: [ 38.025719] CPU: 0 PID: 9410 Comm: syz-executor282 Not tainted 4.14.232-syzkaller #0 [ 38.034885] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 38.044239] task: ffff88809c7e0500 task.stack: ffff888091790000 [ 38.050310] RIP: 0010:ext4_write_inline_data_end+0x360/0x490 [ 38.056101] RSP: 0018:ffff8880917974a8 EFLAGS: 00010297 [ 38.061569] RAX: ffff88809c7e0500 RBX: 1ffff110122f2e99 RCX: 00000000000006be [ 38.070228] RDX: 0000000000000000 RSI: 0000000000000001 RDI: ffff88808b516250 [ 38.080903] RBP: ffff88808b5163f0 R08: ffffffff8b9930b0 R09: 000000000004040f [ 38.088187] R10: ffff88809c7e0dd8 R11: ffff88809c7e0500 R12: ffffea00022cc000 [ 38.095447] R13: 0000000000000001 R14: ffff8880917974e8 R15: ffff88808b516258 [ 38.102800] FS: 00007f3730c71700(0000) GS:ffff8880ba400000(0000) knlGS:0000000000000000 [ 38.111020] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 38.116897] CR2: 00000000004d36c0 CR3: 000000009a801000 CR4: 00000000001406f0 [ 38.124164] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 38.132234] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 38.139513] Call Trace: [ 38.142105] ? ext4_try_to_write_inline_data+0x1590/0x1590 [ 38.147809] ? rcu_lockdep_current_cpu_online+0xed/0x140 [ 38.153244] ext4_write_end+0x18d/0xca0 [ 38.157206] ext4_da_write_end+0x6da/0x8e0 [ 38.161426] generic_perform_write+0x268/0x420 [ 38.165987] ? filemap_page_mkwrite+0x2d0/0x2d0 [ 38.170646] ? generic_file_direct_write+0x2fa/0x420 [ 38.175749] __generic_file_write_iter+0x42b/0x590 [ 38.180751] ext4_file_write_iter+0x276/0xd20 [ 38.185244] ? splice_direct_to_actor+0x27c/0x730 [ 38.190080] ? do_splice_direct+0x164/0x210 [ 38.194431] ? ext4_file_read_iter+0x330/0x330 [ 38.199011] ? entry_SYSCALL_64_after_hwframe+0x46/0xbb [ 38.204373] ? mark_held_locks+0xa6/0xf0 [ 38.208417] ? current_kernel_time64+0x17c/0x230 [ 38.213432] ? trace_hardirqs_on+0x10/0x10 [ 38.217649] do_iter_readv_writev+0x4cf/0x5f0 [ 38.222139] ? clone_verify_area+0x1e0/0x1e0 [ 38.226541] ? rw_verify_area+0xe1/0x2a0 [ 38.230589] do_iter_write+0x152/0x550 [ 38.234464] ? rcu_lockdep_current_cpu_online+0xed/0x140 [ 38.239995] vfs_iter_write+0x70/0xa0 [ 38.243803] iter_file_splice_write+0x52b/0xa90 [ 38.248557] ? splice_from_pipe_next.part.0+0x2f0/0x2f0 [ 38.253917] ? rw_verify_area+0xe1/0x2a0 [ 38.257962] ? splice_from_pipe_next.part.0+0x2f0/0x2f0 [ 38.263308] direct_splice_actor+0x115/0x160 [ 38.267702] splice_direct_to_actor+0x27c/0x730 [ 38.272363] ? generic_pipe_buf_nosteal+0x10/0x10 [ 38.277198] ? do_splice_to+0x140/0x140 [ 38.281154] ? rw_verify_area+0xe1/0x2a0 [ 38.285221] do_splice_direct+0x164/0x210 [ 38.289349] ? splice_direct_to_actor+0x730/0x730 [ 38.294172] ? rcu_read_lock_sched_held+0x16c/0x1d0 [ 38.299177] do_sendfile+0x47f/0xb30 [ 38.302884] ? do_compat_writev+0x180/0x180 [ 38.307193] ? SyS_futex+0x1da/0x290 [ 38.310885] SyS_sendfile64+0xff/0x110 [ 38.314751] ? SyS_sendfile+0x130/0x130 [ 38.318704] ? do_syscall_64+0x4c/0x640 [ 38.322665] ? SyS_sendfile+0x130/0x130 [ 38.326644] do_syscall_64+0x1d5/0x640 [ 38.330514] entry_SYSCALL_64_after_hwframe+0x46/0xbb [ 38.335681] RIP: 0033:0x44acd9 [ 38.338865] RSP: 002b:00007f3730c712f8 EFLAGS: 00000246 ORIG_RAX: 0000000000000028 [ 38.346550] RAX: ffffffffffffffda RBX: 00000000004cd4e0 RCX: 000000000044acd9 [ 38.353804] RDX: 0000000000000000 RSI: 0000000000000004 RDI: 0000000000000003 [ 38.361071] RBP: 000000000049d0b4 R08: 0000000000000000 R09: 0000000000000000 [ 38.368334] R10: 0000000000010000 R11: 0000000000000246 R12: 0030656c69662f2e [ 38.375580] R13: 000000000049c0b0 R14: 0000000300000002 R15: 00000000004cd4e8 [ 38.382833] Code: 3c 02 00 0f 85 29 01 00 00 48 8b 7d 28 44 89 f9 ba ef 02 00 00 45 31 e4 48 c7 c6 a0 13 98 87 e8 b7 99 0c 00 eb 8d e8 00 07 9c ff <0f> 0b e8 f9 06 9c ff 49 8d 7c 24 20 48 89 f8 48 c1 e8 03 42 80 [ 38.401938] RIP: ext4_write_inline_data_end+0x360/0x490 RSP: ffff8880917974a8 [ 38.414084] ---[ end trace 471dc57d81c657fc ]--- [ 38.419125] Kernel panic - not syncing: Fatal exception [ 38.425105] Kernel Offset: disabled [ 38.428729] Rebooting in 86400 seconds..