Warning: Permanently added '10.128.1.45' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 71.344647] kauditd_printk_skb: 10 callbacks suppressed [ 71.344661] audit: type=1400 audit(1566023898.003:36): avc: denied { map } for pid=11938 comm="syz-executor596" path="/root/syz-executor596882648" dev="sda1" ino=16483 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:object_r:user_home_t:s0 tclass=file permissive=1 [ 71.350293] kasan: CONFIG_KASAN_INLINE enabled [ 71.381447] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 71.388789] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 71.394999] CPU: 0 PID: 11938 Comm: syz-executor596 Not tainted 4.19.67 #41 [ 71.402072] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 71.411496] RIP: 0010:do_blockdev_direct_IO+0x2237/0x8cb0 [ 71.417006] Code: fb ce ff e9 47 1d 00 00 e8 d6 0a b0 ff 48 8b 84 24 00 01 00 00 48 8d 78 08 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 5d 6a 00 00 4c 8b b4 24 00 01 00 00 31 ff 4d 8b [ 71.436009] RSP: 0018:ffff8880989d73e0 EFLAGS: 00010202 [ 71.441347] RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffffff81bb4716 [ 71.448589] RDX: 0000000000000001 RSI: ffffffff81bb545a RDI: 0000000000000008 [ 71.455831] RBP: ffff8880989d7728 R08: ffff88809246c4c0 R09: fffff94000456907 [ 71.463073] R10: fffff94000456906 R11: ffffea00022b4837 R12: ffffea00022b4800 [ 71.470312] R13: ffffea00022b4800 R14: 0000000000000003 R15: ffff8880a0bf1a40 [ 71.477798] FS: 0000000000dbb880(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 [ 71.485997] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 71.491851] CR2: 0000561e177bb1a0 CR3: 0000000093753000 CR4: 00000000001406f0 [ 71.499105] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 71.506360] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 71.513599] Call Trace: [ 71.516163] ? ext4_xattr_check_entries+0x32d/0x3b0 [ 71.521153] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 71.526668] ? sb_init_dio_done_wq+0x90/0x90 [ 71.531050] ? __lock_acquire+0x231b/0x49c0 [ 71.535364] ? current_time+0x6f/0x140 [ 71.539223] ? ext4_dio_get_block_unwritten_sync+0xf0/0xf0 [ 71.544821] ? lock_downgrade+0x810/0x810 [ 71.548937] ? ext4_dio_get_block_unwritten_sync+0xf0/0xf0 [ 71.554535] __blockdev_direct_IO+0xa1/0xca [ 71.558830] ? write_end_fn+0xf0/0xf0 [ 71.562602] ext4_direct_IO+0x990/0x19e0 [ 71.566652] ? ext4_dio_get_block_unwritten_sync+0xf0/0xf0 [ 71.572251] generic_file_direct_write+0x20f/0x4b0 [ 71.577153] __generic_file_write_iter+0x2ee/0x630 [ 71.582056] ext4_file_write_iter+0x32b/0x1060 [ 71.586612] ? ext4_file_mmap+0x410/0x410 [ 71.590739] do_iter_readv_writev+0x558/0x830 [ 71.595211] ? vfs_dedupe_file_range+0x6f0/0x6f0 [ 71.599941] ? security_file_permission+0x89/0x230 [ 71.604843] ? rw_verify_area+0x118/0x360 [ 71.608963] do_iter_write+0x184/0x5f0 [ 71.612827] ? rcu_read_lock_sched_held+0x110/0x130 [ 71.617814] ? __kmalloc+0x5e1/0x750 [ 71.621501] vfs_iter_write+0x77/0xb0 [ 71.625275] iter_file_splice_write+0x661/0xbd0 [ 71.629921] ? page_cache_pipe_buf_confirm+0x2b0/0x2b0 [ 71.635172] ? rcu_read_lock_sched_held+0x110/0x130 [ 71.640553] ? rcu_sync_lockdep_assert+0x6d/0xb0 [ 71.645297] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 71.650810] ? __sb_start_write+0x1a9/0x360 [ 71.655111] ? page_cache_pipe_buf_confirm+0x2b0/0x2b0 [ 71.660361] do_splice+0x642/0x12c0 [ 71.663964] ? _raw_spin_unlock+0x2d/0x50 [ 71.668081] ? do_fcntl+0xb0/0x1020 [ 71.671682] ? opipe_prep.part.0+0x2d0/0x2d0 [ 71.676073] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 71.681579] ? __fget_light+0x1a9/0x230 [ 71.685525] __x64_sys_splice+0x2c6/0x330 [ 71.689664] do_syscall_64+0xfd/0x620 [ 71.693439] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 71.698603] RIP: 0033:0x440319 [ 71.701772] Code: 18 89 d0 c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 00 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 0f 83 fb 13 fc ff c3 66 2e 0f 1f 84 00 00 00 00 [ 71.720645] RSP: 002b:00007ffffe00fba8 EFLAGS: 00000246 ORIG_RAX: 0000000000000113 [ 71.728329] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 0000000000440319 [ 71.735570] RDX: 0000000000000007 RSI: 0000000000000000 RDI: 0000000000000004 [ 71.742816] RBP: 00000000006ca018 R08: 00000000ffffffff R09: 0000000000000000 [ 71.750066] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000401ba0 [ 71.757308] R13: 0000000000401c30 R14: 0000000000000000 R15: 0000000000000000 [ 71.764570] Modules linked in: [ 71.768312] ---[ end trace 15c4dcfd1a4437b0 ]--- [ 71.773100] RIP: 0010:do_blockdev_direct_IO+0x2237/0x8cb0 [ 71.778611] Code: fb ce ff e9 47 1d 00 00 e8 d6 0a b0 ff 48 8b 84 24 00 01 00 00 48 8d 78 08 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 5d 6a 00 00 4c 8b b4 24 00 01 00 00 31 ff 4d 8b [ 71.797526] RSP: 0018:ffff8880989d73e0 EFLAGS: 00010202 [ 71.802895] RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffffff81bb4716 [ 71.810170] RDX: 0000000000000001 RSI: ffffffff81bb545a RDI: 0000000000000008 [ 71.817437] RBP: ffff8880989d7728 R08: ffff88809246c4c0 R09: fffff94000456907 [ 71.824750] R10: fffff94000456906 R11: ffffea00022b4837 R12: ffffea00022b4800 [ 71.832031] R13: ffffea00022b4800 R14: 0000000000000003 R15: ffff8880a0bf1a40 [ 71.839299] FS: 0000000000dbb880(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 [ 71.847527] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 71.853404] CR2: 0000561e177bb1a0 CR3: 0000000093753000 CR4: 00000000001406f0 [ 71.860671] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 71.867921] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 71.875190] Kernel panic - not syncing: Fatal exception [ 71.881769] Kernel Offset: disabled [ 71.885399] Rebooting in 86400 seconds..