Warning: Permanently added '10.128.0.55' (ECDSA) to the list of known hosts. executing program [ 47.217251] audit: type=1400 audit(1571002240.991:36): avc: denied { map } for pid=7453 comm="syz-executor198" path="/root/syz-executor198794479" 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 [ 47.223415] kasan: CONFIG_KASAN_INLINE enabled [ 47.248515] audit: type=1800 audit(1571002240.991:37): pid=7453 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-executor198" name="bus" dev="sda1" ino=16484 res=0 [ 47.248774] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 47.278636] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 47.284864] CPU: 1 PID: 7453 Comm: syz-executor198 Not tainted 4.19.79 #0 [ 47.291766] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 47.301126] RIP: 0010:do_blockdev_direct_IO+0x2237/0x8cb0 [ 47.306645] Code: f2 ce ff e9 47 1d 00 00 e8 e6 02 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 [ 47.325525] RSP: 0018:ffff8880a489f3e0 EFLAGS: 00010202 [ 47.330868] RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffffff81bb6a56 [ 47.338166] RDX: 0000000000000001 RSI: ffffffff81bb779a RDI: 0000000000000008 [ 47.345420] RBP: ffff8880a489f728 R08: ffff88808e116180 R09: fffff94000534a07 [ 47.352676] R10: fffff94000534a06 R11: ffffea00029a5037 R12: ffffea00029a5000 [ 47.359941] R13: ffffea00029a5000 R14: 0000000000000003 R15: ffff888091b5fa40 [ 47.367197] FS: 0000000000c77880(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000 [ 47.375402] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 47.381273] CR2: 000055d2f9f0c190 CR3: 00000000a7f99000 CR4: 00000000001406e0 [ 47.388804] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 47.396053] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 47.403309] Call Trace: [ 47.405893] ? ext4_xattr_check_entries+0x32d/0x3b0 [ 47.410896] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 47.416426] ? sb_init_dio_done_wq+0x90/0x90 [ 47.420823] ? __lock_acquire+0x231b/0x49c0 [ 47.425132] ? current_time+0x6f/0x140 [ 47.429018] ? ext4_dio_get_block_unwritten_sync+0xf0/0xf0 [ 47.434636] ? lock_downgrade+0x880/0x880 [ 47.438775] ? ext4_dio_get_block_unwritten_sync+0xf0/0xf0 [ 47.444385] __blockdev_direct_IO+0xa1/0xca [ 47.448699] ? write_end_fn+0xf0/0xf0 [ 47.452479] ext4_direct_IO+0x990/0x19e0 [ 47.456522] ? ext4_dio_get_block_unwritten_sync+0xf0/0xf0 [ 47.462130] generic_file_direct_write+0x20f/0x4b0 [ 47.467052] __generic_file_write_iter+0x2ee/0x630 [ 47.471964] ext4_file_write_iter+0x32b/0x1060 [ 47.476528] ? ext4_file_mmap+0x410/0x410 [ 47.480661] do_iter_readv_writev+0x558/0x830 [ 47.485138] ? vfs_dedupe_file_range+0x6f0/0x6f0 [ 47.489875] ? security_file_permission+0x89/0x230 [ 47.494797] ? rw_verify_area+0x118/0x360 [ 47.498926] do_iter_write+0x184/0x5f0 [ 47.502801] ? rcu_read_lock_sched_held+0x110/0x130 [ 47.507820] ? __kmalloc+0x5e1/0x750 [ 47.511515] vfs_iter_write+0x77/0xb0 [ 47.515296] iter_file_splice_write+0x661/0xbd0 [ 47.519946] ? page_cache_pipe_buf_confirm+0x2b0/0x2b0 [ 47.525206] ? rcu_read_lock_sched_held+0x110/0x130 [ 47.530201] ? rcu_sync_lockdep_assert+0x6d/0xb0 [ 47.534948] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 47.540467] ? __sb_start_write+0x1a9/0x360 [ 47.544769] ? page_cache_pipe_buf_confirm+0x2b0/0x2b0 [ 47.550033] do_splice+0x642/0x12c0 [ 47.553640] ? putname+0xf4/0x130 [ 47.557084] ? opipe_prep.part.0+0x2d0/0x2d0 [ 47.561473] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 47.566989] ? __fget_light+0x1a9/0x230 [ 47.570944] __x64_sys_splice+0x2c6/0x330 [ 47.575075] do_syscall_64+0xfd/0x620 [ 47.578859] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 47.584029] RIP: 0033:0x440309 [ 47.587203] 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 [ 47.606084] RSP: 002b:00007fff8c249088 EFLAGS: 00000246 ORIG_RAX: 0000000000000113 [ 47.613773] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 0000000000440309 [ 47.621023] RDX: 0000000000000007 RSI: 0000000000000000 RDI: 0000000000000004 [ 47.628271] RBP: 00000000006ca018 R08: 00000000ffffffff R09: 0000000000000000 [ 47.635620] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000401b90 [ 47.642874] R13: 0000000000401c20 R14: 0000000000000000 R15: 0000000000000000 [ 47.650141] Modules linked in: [ 47.653851] ---[ end trace dafae1f0370c9a19 ]--- [ 47.658689] RIP: 0010:do_blockdev_direct_IO+0x2237/0x8cb0 [ 47.665595] Code: f2 ce ff e9 47 1d 00 00 e8 e6 02 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 [ 47.684539] RSP: 0018:ffff8880a489f3e0 EFLAGS: 00010202 [ 47.689906] RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffffff81bb6a56 [ 47.697231] RDX: 0000000000000001 RSI: ffffffff81bb779a RDI: 0000000000000008 [ 47.704504] RBP: ffff8880a489f728 R08: ffff88808e116180 R09: fffff94000534a07 [ 47.711817] R10: fffff94000534a06 R11: ffffea00029a5037 R12: ffffea00029a5000 [ 47.719151] R13: ffffea00029a5000 R14: 0000000000000003 R15: ffff888091b5fa40 [ 47.726444] FS: 0000000000c77880(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000 [ 47.734685] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 47.740563] CR2: 000055d2f9f0c190 CR3: 00000000a7f99000 CR4: 00000000001406e0 [ 47.747843] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 47.755121] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 47.762380] Kernel panic - not syncing: Fatal exception [ 47.769202] Kernel Offset: disabled [ 47.772824] Rebooting in 86400 seconds..