Warning: Permanently added '10.128.15.217' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 22.184007] kasan: CONFIG_KASAN_INLINE enabled [ 22.185474] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 22.187678] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 22.189431] Modules linked in: [ 22.190337] CPU: 1 PID: 2042 Comm: syz-executor926 Not tainted 4.9.194+ #0 [ 22.191841] task: 0000000023cfaf09 task.stack: 0000000087292245 [ 22.194014] RIP: 0010:[] [<0000000016d392ad>] __blockdev_direct_IO+0x1c55/0xd370 [ 22.196391] RSP: 0018:ffff8801cf4a7310 EFLAGS: 00010202 [ 22.197231] RAX: dffffc0000000000 RBX: ffffea00073c7c1c RCX: 000000000000000c [ 22.198439] RDX: 0000000000000004 RSI: ffffffff815dd948 RDI: 0000000000000020 [ 22.200083] RBP: ffff8801cf4a7650 R08: 0000000000000000 R09: ffff8801d2137100 [ 22.202157] R10: ffffed003a426e2d R11: ffff8801d213716f R12: ffffea00073c7c00 [ 22.206222] R13: ffffea00073c7c00 R14: 0000000000000000 R15: ffff8801cf058000 [ 22.213477] FS: 0000000000b56880(0000) GS:ffff8801db700000(0000) knlGS:0000000000000000 [ 22.221683] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 22.227554] CR2: 0000000020011000 CR3: 00000001cf1dd000 CR4: 00000000001606b0 [ 22.234810] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 22.242074] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 22.249337] Stack: [ 22.251464] ffffffff83cc9620 0000000000000003 1ffff1003a0f0df5 ffff8801d0786fa8 [ 22.259484] ffff8801d0785f00 ffff8801cf4a7440 0005080000000000 0000000000001000 [ 22.267483] ffff8801cf058079 ffff8801d0785f00 ffff8801da011140 ffff880100000000 [ 22.275481] Call Trace: [ 22.278048] [<000000007e0af296>] ? sb_init_dio_done_wq+0x80/0x80 [ 22.284255] [<0000000051eaaa1a>] ? ext4_dio_get_block_unwritten_sync+0x100/0x100 [ 22.291872] [<00000000c6796983>] ? ext4_direct_IO+0xc17/0x29b0 [ 22.297919] [<000000004a7f32b4>] ? ext4_direct_IO+0xc69/0x29b0 [ 22.303958] [<0000000042801b38>] ? __ext4_journal_stop+0xea/0x1c0 [ 22.310250] [<0000000025eb89e8>] ext4_direct_IO+0xa1d/0x29b0 [ 22.316125] [<0000000051eaaa1a>] ? ext4_dio_get_block_unwritten_sync+0x100/0x100 [ 22.323740] [<000000002883bd8e>] ? ext4_da_write_begin+0x1080/0x1080 [ 22.330302] [<00000000596a7d6a>] ? trace_hardirqs_on+0x10/0x10 [ 22.336339] [<000000006522c369>] ? ext4_xattr_security_set+0x40/0x40 [ 22.342892] [<00000000e6b89c15>] ? ext4_xattr_security_get+0x32/0x40 [ 22.349451] [<0000000015e63812>] ? __vfs_getxattr+0xea/0x140 [ 22.355317] [<000000003ee70edf>] ? __vfs_setxattr+0x170/0x170 [ 22.361279] [<00000000d9ea50fa>] ? __lock_acquire+0x26fe/0x4390 [ 22.367401] [<0000000020b1e4b2>] ? debug_lockdep_rcu_enabled+0x71/0xa0 [ 22.374129] [<00000000e042ef65>] ? mark_held_locks+0xb1/0x100 [ 22.380088] [<000000009f3f232d>] ? filemap_check_errors+0x90/0xc0 [ 22.386397] [<00000000c7aa9f81>] generic_file_direct_write+0x293/0x520 [ 22.393139] [<000000009c572a40>] ? current_kernel_time64+0xbc/0x110 [ 22.399608] [<000000004a4315e0>] ? filemap_write_and_wait_range+0xb0/0xb0 [ 22.406618] [<000000002beb83be>] ? file_update_time+0xc1/0x390 [ 22.412661] [<000000009483303b>] __generic_file_write_iter+0x20f/0x530 [ 22.419398] [<00000000fca5212e>] ? generic_write_checks+0x245/0x410 [ 22.425872] [<00000000893d91da>] ext4_file_write_iter+0x6e7/0xcd0 [ 22.432168] [<00000000143f580a>] ? ext4_llseek+0x8e0/0x8e0 [ 22.437910] [<00000000e042ef65>] ? mark_held_locks+0xb1/0x100 [ 22.443862] [<00000000655a1465>] ? mutex_lock_nested+0x6c7/0x920 [ 22.450071] [<00000000ee3b511c>] ? trace_hardirqs_on_caller+0x385/0x5a0 [ 22.456887] [<00000000ff8c3a2f>] vfs_iter_write+0x2e2/0x580 [ 22.462666] [<00000000840c1545>] ? do_iter_readv_writev+0x4b0/0x4b0 [ 22.469136] [<0000000034c6b01b>] ? mutex_trylock+0x3f0/0x3f0 [ 22.474997] [<000000004f146396>] ? kasan_unpoison_shadow+0x35/0x50 [ 22.481384] [<0000000004e3518d>] ? splice_from_pipe_next.part.0+0x1e9/0x290 [ 22.488563] [<00000000c7eb4eb8>] iter_file_splice_write+0x5a9/0xb10 [ 22.495049] [<000000003a9db098>] ? vmsplice_to_user+0x1e0/0x1e0 [ 22.501172] [<00000000d38da6a6>] ? rcu_read_lock_sched_held+0x10b/0x130 [ 22.507987] [<0000000037f1694d>] ? rcu_sync_lockdep_assert+0x73/0xb0 [ 22.514562] [<0000000098b58097>] ? __sb_start_write+0x161/0x310 [ 22.520698] [<000000003a9db098>] ? vmsplice_to_user+0x1e0/0x1e0 [ 22.526820] [<000000006918a99a>] SyS_splice+0xe02/0x14c0 [ 22.532334] [<0000000099937f8b>] ? compat_SyS_vmsplice+0x160/0x160 [ 22.538714] [<000000009af593ca>] ? do_syscall_64+0x4a/0x5c0 [ 22.544488] [<0000000099937f8b>] ? compat_SyS_vmsplice+0x160/0x160 [ 22.550868] [<00000000d3831292>] do_syscall_64+0x1ad/0x5c0 [ 22.556562] [<000000000a1695ed>] entry_SYSCALL_64_after_swapgs+0x5d/0xdb [ 22.563637] Code: b2 81 e6 ff e9 b3 77 00 00 e8 b8 4d d4 ff 48 8b 84 24 f8 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 bc 96 00 00 48 8b 84 24 f8 00 00 00 4c 8b 68 [ 22.590791] RIP [<0000000016d392ad>] __blockdev_direct_IO+0x1c55/0xd370 [ 22.597742] RSP [ 22.601754] ---[ end trace 95cabe7c19a55ca7 ]--- [ 22.606638] Kernel panic - not syncing: Fatal exception [ 22.612496] Kernel Offset: disabled [ 22.616104] Rebooting in 86400 seconds..