[ 44.100122][ T26] audit: type=1800 audit(1554782425.119:30): pid=7987 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: [ 49.017655][ T26] kauditd_printk_skb: 4 callbacks suppressed [ 49.017669][ T26] audit: type=1400 audit(1554782430.059:35): avc: denied { map } for pid=8161 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 '10.128.0.106' (ECDSA) to the list of known hosts. executing program executing program [ 63.901942][ T26] audit: type=1400 audit(1554782444.949:36): avc: denied { map } for pid=8173 comm="syz-executor058" path="/root/syz-executor058578635" 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 [ 64.011944][ T8180] WARNING: CPU: 1 PID: 8180 at fs/attr.c:234 notify_change+0xca2/0xfb0 [ 64.020629][ T8180] Kernel panic - not syncing: panic_on_warn set ... [ 64.027222][ T8180] CPU: 1 PID: 8180 Comm: syz-executor058 Not tainted 5.1.0-rc4+ #59 [ 64.035388][ T8180] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 64.045443][ T8180] Call Trace: [ 64.048815][ T8180] dump_stack+0x172/0x1f0 [ 64.053160][ T8180] ? notify_change+0xca0/0xfb0 [ 64.057924][ T8180] panic+0x2cb/0x65c [ 64.061825][ T8180] ? __warn_printk+0xf3/0xf3 [ 64.066547][ T8180] ? notify_change+0xca2/0xfb0 [ 64.071381][ T8180] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 64.077627][ T8180] ? __warn.cold+0x5/0x45 [ 64.081951][ T8180] ? __warn+0xe8/0x1d0 [ 64.086020][ T8180] ? notify_change+0xca2/0xfb0 [ 64.090773][ T8180] __warn.cold+0x20/0x45 [ 64.095221][ T8180] ? notify_change+0xca2/0xfb0 [ 64.099988][ T8180] report_bug+0x263/0x2b0 [ 64.104308][ T8180] do_error_trap+0x11b/0x200 [ 64.108892][ T8180] do_invalid_op+0x37/0x50 [ 64.113541][ T8180] ? notify_change+0xca2/0xfb0 [ 64.118405][ T8180] invalid_op+0x14/0x20 [ 64.122700][ T8180] RIP: 0010:notify_change+0xca2/0xfb0 [ 64.128410][ T8180] Code: 14 52 0a 00 e8 1f a3 b7 ff 4c 8b 7c 24 20 4c 89 ff e8 02 88 4a 01 89 de 4c 89 ff e8 e8 a3 4a 01 e9 33 fa ff ff e8 fe a2 b7 ff <0f> 0b e9 42 f4 ff ff e8 f2 a2 b7 ff 44 89 f3 4c 89 ea 48 b8 00 00 [ 64.148712][ T8180] RSP: 0018:ffff8880817374c0 EFLAGS: 00010293 [ 64.155143][ T8180] RAX: ffff88808f8ea4c0 RBX: 0000000000004200 RCX: ffffffff81b8e042 [ 64.163384][ T8180] RDX: 0000000000000000 RSI: ffffffff81b8ec02 RDI: 0000000000000007 [ 64.171615][ T8180] RBP: ffff888081737510 R08: ffff88808f8ea4c0 R09: ffffed10147a3444 [ 64.179774][ T8180] R10: ffffed10147a3443 R11: ffff8880a3d1a21f R12: ffff888081737560 [ 64.187967][ T8180] R13: ffff8880a3d1a140 R14: 0000000000000000 R15: ffff8880817375f0 [ 64.196280][ T8180] ? notify_change+0xe2/0xfb0 [ 64.201164][ T8180] ? notify_change+0xca2/0xfb0 [ 64.205981][ T8180] file_remove_privs+0x2a9/0x480 [ 64.210921][ T8180] ? dentry_needs_remove_privs.part.0+0x80/0x80 [ 64.217176][ T8180] ? __kernel_text_address+0xd/0x40 [ 64.222560][ T8180] ? unwind_get_return_address+0x61/0xa0 [ 64.228596][ T8180] ? __save_stack_trace+0x99/0x100 [ 64.233829][ T8180] __generic_file_write_iter+0x15e/0x630 [ 64.239691][ T8180] blkdev_write_iter+0x23a/0x440 [ 64.244738][ T8180] ? __blkdev_get+0x1660/0x1660 [ 64.249627][ T8180] ? 0xffffffff81000000 [ 64.253790][ T8180] ? __might_sleep+0x95/0x190 [ 64.258696][ T8180] do_iter_readv_writev+0x5e1/0x8e0 [ 64.263986][ T8180] ? vfs_dedupe_file_range+0x780/0x780 [ 64.269567][ T8180] ? rw_verify_area+0x118/0x360 [ 64.274691][ T8180] do_iter_write+0x184/0x610 [ 64.279293][ T8180] ? rcu_read_lock_sched_held+0x110/0x130 [ 64.285170][ T8180] ? __kmalloc+0x5d5/0x740 [ 64.289734][ T8180] vfs_iter_write+0x77/0xb0 [ 64.294391][ T8180] iter_file_splice_write+0x662/0xbe0 [ 64.299796][ T8180] ? atime_needs_update+0x5f0/0x5f0 [ 64.305056][ T8180] ? page_cache_pipe_buf_confirm+0x2b0/0x2b0 [ 64.311058][ T8180] ? rw_verify_area+0x118/0x360 [ 64.316039][ T8180] ? page_cache_pipe_buf_confirm+0x2b0/0x2b0 [ 64.322026][ T8180] direct_splice_actor+0x126/0x1a0 [ 64.327156][ T8180] splice_direct_to_actor+0x369/0x970 [ 64.332783][ T8180] ? generic_pipe_buf_nosteal+0x10/0x10 [ 64.338449][ T8180] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 64.344935][ T8180] ? do_splice_to+0x190/0x190 [ 64.349710][ T8180] ? rw_verify_area+0x118/0x360 [ 64.354647][ T8180] do_splice_direct+0x1da/0x2a0 [ 64.359688][ T8180] ? splice_direct_to_actor+0x970/0x970 [ 64.365561][ T8180] ? rw_verify_area+0x118/0x360 [ 64.370543][ T8180] do_sendfile+0x597/0xd00 [ 64.374957][ T8180] ? do_compat_pwritev64+0x1c0/0x1c0 [ 64.380347][ T8180] ? trace_hardirqs_on_caller+0x6a/0x220 [ 64.386298][ T8180] ? __x64_sys_futex+0x404/0x590 [ 64.391333][ T8180] __x64_sys_sendfile64+0x1dd/0x220 [ 64.396999][ T8180] ? __ia32_sys_sendfile+0x230/0x230 [ 64.402358][ T8180] ? do_syscall_64+0x26/0x610 [ 64.407168][ T8180] ? lockdep_hardirqs_on+0x418/0x5d0 [ 64.412444][ T8180] ? trace_hardirqs_on+0x67/0x230 [ 64.417466][ T8180] do_syscall_64+0x103/0x610 [ 64.422172][ T8180] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 64.428153][ T8180] RIP: 0033:0x44a949 [ 64.432173][ T8180] Code: e8 8c b5 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 2b cc fb ff c3 66 2e 0f 1f 84 00 00 00 00 [ 64.451895][ T8180] RSP: 002b:00007f8bde0cace8 EFLAGS: 00000246 ORIG_RAX: 0000000000000028 [ 64.460311][ T8180] RAX: ffffffffffffffda RBX: 00000000006dbc48 RCX: 000000000044a949 [ 64.468568][ T8180] RDX: 0000000000000000 RSI: 0000000000000006 RDI: 0000000000000003 [ 64.476724][ T8180] RBP: 00000000006dbc40 R08: 0000000000000000 R09: 0000000000000000 [ 64.484797][ T8180] R10: 0000400000080001 R11: 0000000000000246 R12: 00000000006dbc4c [ 64.493025][ T8180] R13: 00007ffc1b2285ef R14: 00007f8bde0cb9c0 R15: 20c49ba5e353f7cf [ 64.502188][ T8180] Kernel Offset: disabled [ 64.518946][ T8180] Rebooting in 86400 seconds..