Warning: Permanently added '10.128.0.42' (ECDSA) to the list of known hosts. [ 41.061640] random: sshd: uninitialized urandom read (32 bytes read) executing program [ 41.181318] audit: type=1400 audit(1569202630.232:36): avc: denied { map } for pid=6945 comm="syz-executor106" path="/root/syz-executor106821068" dev="sda1" ino=16484 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:object_r:user_home_t:s0 tclass=file permissive=1 [ 41.186885] kasan: CONFIG_KASAN_INLINE enabled [ 41.213619] audit: type=1800 audit(1569202630.232:37): pid=6945 uid=0 auid=4294967295 ses=4294967295 subj=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 op="collect_data" cause="failed(directio)" comm="syz-executor106" name="bus" dev="sda1" ino=16485 res=0 [ 41.214310] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 41.244404] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 41.250639] Modules linked in: [ 41.253814] CPU: 1 PID: 6945 Comm: syz-executor106 Not tainted 4.14.146 #0 [ 41.260803] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 41.270145] task: ffff888094e3a3c0 task.stack: ffff888094cf0000 [ 41.276184] RIP: 0010:do_blockdev_direct_IO+0x1c75/0x7fd0 [ 41.281702] RSP: 0018:ffff888094cf74c0 EFLAGS: 00010202 [ 41.287057] RAX: dffffc0000000000 RBX: ffffea000228b21c RCX: 000000000000000c [ 41.294326] RDX: 0000000000000004 RSI: 0000000000000000 RDI: 0000000000000020 [ 41.301584] RBP: ffff888094cf77d8 R08: ffffed100fb13421 R09: ffff88807d89a080 [ 41.308837] R10: ffffed100fb13420 R11: ffff88807d89a107 R12: ffffea000228b200 [ 41.316098] R13: ffffea000228b200 R14: 0000000000000000 R15: ffff888094f4da40 [ 41.323352] FS: 0000555556f91880(0000) GS:ffff8880aef00000(0000) knlGS:0000000000000000 [ 41.331561] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 41.337426] CR2: 00005562b68911a0 CR3: 000000009d1b0000 CR4: 00000000001406e0 [ 41.344684] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 41.351929] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 41.359177] Call Trace: [ 41.361750] ? __ext4_get_inode_loc+0x392/0xf30 [ 41.366406] ? sb_init_dio_done_wq+0x80/0x80 [ 41.370789] ? __lock_acquire+0x2521/0x4620 [ 41.375110] ? save_trace+0x290/0x290 [ 41.378889] ? ext4_dio_get_block_unwritten_sync+0xd0/0xd0 [ 41.384489] ? ext4_dio_get_block_unwritten_sync+0xd0/0xd0 [ 41.390100] __blockdev_direct_IO+0xa1/0xca [ 41.394398] ? write_end_fn+0xa0/0xa0 [ 41.398173] ext4_direct_IO+0x70d/0x1890 [ 41.402210] ? ext4_dio_get_block_unwritten_sync+0xd0/0xd0 [ 41.407819] generic_file_direct_write+0x1e7/0x430 [ 41.412723] __generic_file_write_iter+0x2bc/0x5b0 [ 41.417644] ext4_file_write_iter+0x2ac/0xe90 [ 41.422123] ? ext4_file_mmap+0x2c0/0x2c0 [ 41.426263] ? __might_sleep+0x93/0xb0 [ 41.430129] do_iter_readv_writev+0x418/0x670 [ 41.434600] ? vfs_dedupe_file_range+0x8f0/0x8f0 [ 41.440549] ? rw_verify_area+0xea/0x2b0 [ 41.444584] do_iter_write+0x154/0x540 [ 41.448446] ? rcu_lockdep_current_cpu_online+0xf2/0x140 [ 41.453893] ? __kmalloc+0x376/0x7a0 [ 41.457581] vfs_iter_write+0x77/0xb0 [ 41.461365] iter_file_splice_write+0x572/0xad0 [ 41.466025] ? default_file_splice_read+0x7b0/0x7b0 [ 41.471016] ? __lock_is_held+0xb6/0x140 [ 41.475066] ? rcu_sync_lockdep_assert+0x6d/0xb0 [ 41.479795] ? __sb_start_write+0x153/0x2f0 [ 41.484095] ? default_file_splice_read+0x7b0/0x7b0 [ 41.489084] SyS_splice+0xd92/0x1430 [ 41.492783] ? do_sys_open+0x221/0x430 [ 41.496648] ? compat_SyS_vmsplice+0x250/0x250 [ 41.501207] ? do_syscall_64+0x53/0x640 [ 41.505154] ? compat_SyS_vmsplice+0x250/0x250 [ 41.509710] do_syscall_64+0x1e8/0x640 [ 41.513572] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 41.518394] entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 41.523559] RIP: 0033:0x440309 [ 41.526723] RSP: 002b:00007ffca2a5c1b8 EFLAGS: 00000246 ORIG_RAX: 0000000000000113 [ 41.534417] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 0000000000440309 [ 41.541675] RDX: 0000000000000007 RSI: 0000000000000000 RDI: 0000000000000004 [ 41.548918] RBP: 00000000006ca018 R08: 00000000ffffffff R09: 0000000000000000 [ 41.556175] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000401b90 [ 41.563507] R13: 0000000000401c20 R14: 0000000000000000 R15: 0000000000000000 [ 41.570753] Code: 92 99 d8 ff e9 4a 1d 00 00 e8 f8 59 c1 ff 48 8b 84 24 f0 00 00 00 48 8d 78 20 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 3d 54 00 00 48 8b 84 24 f0 00 00 00 4c 8b 60 [ 41.590786] RIP: do_blockdev_direct_IO+0x1c75/0x7fd0 RSP: ffff888094cf74c0 [ 41.598567] ---[ end trace 266a05acccaed6b8 ]--- [ 41.603369] Kernel panic - not syncing: Fatal exception [ 41.610115] Kernel Offset: disabled [ 41.613730] Rebooting in 86400 seconds..