[ 44.833086][ T26] audit: type=1800 audit(1554421728.686:30): pid=8009 uid=0 auid=4294967295 ses=4294967295 subj=system_u:system_r:kernel_t:s0 op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0 Starting mcstransd: [....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting file context maintaining daemon: restorecond[?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 syzkaller login: [ 51.444741][ T26] kauditd_printk_skb: 4 callbacks suppressed [ 51.444757][ T26] audit: type=1400 audit(1554421735.336:35): avc: denied { map } for pid=8184 comm="bash" path="/bin/bash" dev="sda1" ino=1457 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=system_u:object_r:file_t:s0 tclass=file permissive=1 Warning: Permanently added '10.128.0.19' (ECDSA) to the list of known hosts. executing program [ 75.164518][ T26] audit: type=1400 audit(1554421759.056:36): avc: denied { map } for pid=8196 comm="syz-executor862" path="/root/syz-executor862910657" dev="sda1" ino=1426 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:object_r:user_home_t:s0 tclass=file permissive=1 executing program [ 75.794251][ T8201] WARNING: CPU: 0 PID: 8201 at fs/attr.c:234 notify_change+0xca2/0xfb0 [ 75.802531][ T8201] Kernel panic - not syncing: panic_on_warn set ... [ 75.809107][ T8201] CPU: 0 PID: 8201 Comm: syz-executor862 Not tainted 5.1.0-rc3+ #51 [ 75.817062][ T8201] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 75.827105][ T8201] Call Trace: [ 75.830393][ T8201] dump_stack+0x172/0x1f0 [ 75.834717][ T8201] ? notify_change+0xc80/0xfb0 [ 75.839478][ T8201] panic+0x2cb/0x65c [ 75.843358][ T8201] ? __warn_printk+0xf3/0xf3 [ 75.852594][ T8201] ? notify_change+0xca2/0xfb0 [ 75.857379][ T8201] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 75.863656][ T8201] ? __warn.cold+0x5/0x45 [ 75.868037][ T8201] ? __warn+0xe8/0x1d0 [ 75.872096][ T8201] ? notify_change+0xca2/0xfb0 [ 75.876840][ T8201] __warn.cold+0x20/0x45 [ 75.881063][ T8201] ? notify_change+0xca2/0xfb0 [ 75.885819][ T8201] report_bug+0x263/0x2b0 [ 75.890135][ T8201] do_error_trap+0x11b/0x200 [ 75.894720][ T8201] do_invalid_op+0x37/0x50 [ 75.899127][ T8201] ? notify_change+0xca2/0xfb0 [ 75.903919][ T8201] invalid_op+0x14/0x20 [ 75.908067][ T8201] RIP: 0010:notify_change+0xca2/0xfb0 [ 75.913461][ T8201] Code: 14 52 0a 00 e8 ff ab b7 ff 4c 8b 7c 24 20 4c 89 ff e8 b2 87 4a 01 89 de 4c 89 ff e8 98 a3 4a 01 e9 33 fa ff ff e8 de ab b7 ff <0f> 0b e9 42 f4 ff ff e8 d2 ab b7 ff 44 89 f3 4c 89 ea 48 b8 00 00 [ 75.933073][ T8201] RSP: 0018:ffff88808bdb74c0 EFLAGS: 00010293 [ 75.939245][ T8201] RAX: ffff88808c6e2340 RBX: 0000000000004200 RCX: ffffffff81b8d762 [ 75.947209][ T8201] RDX: 0000000000000000 RSI: ffffffff81b8e322 RDI: 0000000000000007 [ 75.955161][ T8201] RBP: ffff88808bdb7510 R08: ffff88808c6e2340 R09: ffffed10147cdc44 [ 75.963108][ T8201] R10: ffffed10147cdc43 R11: ffff8880a3e6e21f R12: ffff88808bdb7560 [ 75.971059][ T8201] R13: ffff8880a3e6e140 R14: 0000000000000000 R15: ffff88808bdb75f0 [ 75.979164][ T8201] ? notify_change+0xe2/0xfb0 [ 75.983824][ T8201] ? notify_change+0xca2/0xfb0 [ 75.988580][ T8201] file_remove_privs+0x2a9/0x480 [ 75.993498][ T8201] ? dentry_needs_remove_privs.part.0+0x80/0x80 [ 75.999729][ T8201] ? __kernel_text_address+0xd/0x40 [ 76.004916][ T8201] ? unwind_get_return_address+0x61/0xa0 [ 76.010605][ T8201] ? __save_stack_trace+0x99/0x100 [ 76.015708][ T8201] __generic_file_write_iter+0x15e/0x630 [ 76.021327][ T8201] blkdev_write_iter+0x23a/0x440 [ 76.026254][ T8201] ? __blkdev_get+0x1660/0x1660 [ 76.031097][ T8201] ? 0xffffffff81000000 [ 76.035238][ T8201] ? __might_sleep+0x95/0x190 [ 76.039908][ T8201] do_iter_readv_writev+0x5e1/0x8e0 [ 76.045094][ T8201] ? vfs_dedupe_file_range+0x780/0x780 [ 76.050755][ T8201] ? rw_verify_area+0x118/0x360 [ 76.055633][ T8201] do_iter_write+0x184/0x610 [ 76.060219][ T8201] ? rcu_read_lock_sched_held+0x110/0x130 [ 76.065942][ T8201] ? __kmalloc+0x5d5/0x740 [ 76.070350][ T8201] vfs_iter_write+0x77/0xb0 [ 76.074844][ T8201] iter_file_splice_write+0x662/0xbe0 [ 76.080199][ T8201] ? atime_needs_update+0x5f0/0x5f0 [ 76.085389][ T8201] ? page_cache_pipe_buf_confirm+0x2b0/0x2b0 [ 76.091495][ T8201] ? rw_verify_area+0x118/0x360 [ 76.096339][ T8201] ? page_cache_pipe_buf_confirm+0x2b0/0x2b0 [ 76.102433][ T8201] direct_splice_actor+0x126/0x1a0 [ 76.107580][ T8201] splice_direct_to_actor+0x369/0x970 [ 76.112942][ T8201] ? generic_pipe_buf_nosteal+0x10/0x10 [ 76.118478][ T8201] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 76.124698][ T8201] ? do_splice_to+0x190/0x190 [ 76.129364][ T8201] ? rw_verify_area+0x118/0x360 [ 76.134240][ T8201] do_splice_direct+0x1da/0x2a0 [ 76.139078][ T8201] ? splice_direct_to_actor+0x970/0x970 [ 76.144623][ T8201] ? rw_verify_area+0x118/0x360 [ 76.149463][ T8201] do_sendfile+0x597/0xd00 [ 76.153875][ T8201] ? do_compat_pwritev64+0x1c0/0x1c0 [ 76.159157][ T8201] ? __fget_light+0x1a9/0x230 [ 76.163927][ T8201] __x64_sys_sendfile64+0x1dd/0x220 [ 76.169140][ T8201] ? __ia32_sys_sendfile+0x230/0x230 [ 76.174413][ T8201] ? do_syscall_64+0x26/0x610 [ 76.179079][ T8201] ? lockdep_hardirqs_on+0x418/0x5d0 [ 76.184349][ T8201] ? trace_hardirqs_on+0x67/0x230 [ 76.189353][ T8201] do_syscall_64+0x103/0x610 [ 76.193926][ T8201] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 76.199800][ T8201] RIP: 0033:0x4455f9 [ 76.203741][ T8201] Code: e8 ac ab 02 00 48 83 c4 18 c3 0f 1f 80 00 00 00 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 bb cd fb ff c3 66 2e 0f 1f 84 00 00 00 00 [ 76.223333][ T8201] RSP: 002b:00007fff64ffdb38 EFLAGS: 00000246 ORIG_RAX: 0000000000000028 [ 76.231740][ T8201] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00000000004455f9 [ 76.239698][ T8201] RDX: 0000000000000000 RSI: 0000000000000003 RDI: 0000000000000003 [ 76.248110][ T8201] RBP: 0000000000012572 R08: 00000000004028d0 R09: 00000000004028d0 [ 76.256075][ T8201] R10: 000000000200000d R11: 0000000000000246 R12: 0000000000402840 [ 76.264035][ T8201] R13: 00000000004028d0 R14: 0000000000000000 R15: 0000000000000000 [ 76.272829][ T8201] Kernel Offset: disabled [ 76.277223][ T8201] Rebooting in 86400 seconds..