[ 31.067945] audit: type=1800 audit(1556188295.824:33): pid=6792 uid=0 auid=4294967295 ses=4294967295 subj=system_u:system_r:kernel_t:s0 op="collect_data" cause="failed(directio)" comm="startpar" name="rc.local" dev="sda1" ino=2465 res=0 [ 31.094503] audit: type=1800 audit(1556188295.834:34): pid=6792 uid=0 auid=4294967295 ses=4294967295 subj=system_u:system_r:kernel_t:s0 op="collect_data" cause="failed(directio)" comm="startpar" name="rmnologin" dev="sda1" ino=2456 res=0 Debian GNU/Linux 7 syzkaller ttyS0 syzkaller login: [ 35.228496] random: sshd: uninitialized urandom read (32 bytes read) [ 35.619035] audit: type=1400 audit(1556188300.374:35): avc: denied { map } for pid=6967 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 [ 35.670444] random: sshd: uninitialized urandom read (32 bytes read) [ 36.224463] random: sshd: uninitialized urandom read (32 bytes read) [ 36.411611] random: sshd: uninitialized urandom read (32 bytes read) Warning: Permanently added '10.128.0.166' (ECDSA) to the list of known hosts. [ 42.174732] random: sshd: uninitialized urandom read (32 bytes read) executing program [ 42.293140] audit: type=1400 audit(1556188307.054:36): avc: denied { map } for pid=6979 comm="syz-executor711" path="/root/syz-executor711555728" 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 executing program [ 42.431072] ------------[ cut here ]------------ [ 42.435894] WARNING: CPU: 1 PID: 6987 at fs/attr.c:213 notify_change+0xa32/0xd10 [ 42.443417] Kernel panic - not syncing: panic_on_warn set ... [ 42.443417] [ 42.451093] CPU: 1 PID: 6987 Comm: syz-executor711 Not tainted 4.14.113 #3 [ 42.458310] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 42.467652] Call Trace: [ 42.470493] dump_stack+0x138/0x19c [ 42.474128] panic+0x1f2/0x438 [ 42.477417] ? add_taint.cold+0x16/0x16 [ 42.481385] ? notify_change+0xa32/0xd10 [ 42.486950] ? notify_change+0xa32/0xd10 [ 42.492419] __warn.cold+0x2f/0x34 [ 42.496080] ? ist_end_non_atomic+0x10/0x10 [ 42.500389] ? notify_change+0xa32/0xd10 [ 42.504438] report_bug+0x216/0x254 [ 42.508050] do_error_trap+0x1bb/0x310 [ 42.511927] ? math_error+0x360/0x360 [ 42.516437] ? lock_downgrade+0x6e0/0x6e0 [ 42.520586] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 42.525552] do_invalid_op+0x1b/0x20 [ 42.529278] invalid_op+0x1b/0x40 [ 42.532731] RIP: 0010:notify_change+0xa32/0xd10 [ 42.537394] RSP: 0018:ffff88809be2f5b0 EFLAGS: 00010297 [ 42.542763] RAX: ffff88807fed0200 RBX: ffff8880a489db60 RCX: 0000000000000000 [ 42.550018] RDX: 0000000000000000 RSI: ffff88809be2f650 RDI: ffff8880a489dc40 [ 42.557387] RBP: ffff88809be2f600 R08: ffff88807fed0200 R09: 0000000000000000 [ 42.564865] R10: 0000000000000000 R11: ffff88807fed0200 R12: ffff88809be2f650 [ 42.572134] R13: 0000000000004200 R14: ffff8880a489db60 R15: ffff88809be2f6c0 [ 42.579488] file_remove_privs+0x229/0x430 [ 42.583712] ? dentry_needs_remove_privs.part.0+0x60/0x60 [ 42.589345] ? __save_stack_trace+0x7b/0xd0 [ 42.593794] ? depot_save_stack+0x11c/0x410 [ 42.598107] __generic_file_write_iter+0x15e/0x5b0 [ 42.603112] ? save_stack_trace+0x16/0x20 [ 42.607261] blkdev_write_iter+0x1e8/0x3a0 [ 42.611663] ? check_disk_change+0x120/0x120 [ 42.616065] ? __might_sleep+0x93/0xb0 [ 42.619932] ? save_trace+0x290/0x290 [ 42.623832] do_iter_readv_writev+0x41e/0x680 [ 42.628328] ? vfs_dedupe_file_range+0x8f0/0x8f0 [ 42.633092] ? rw_verify_area+0xea/0x2b0 [ 42.637954] do_iter_write+0x154/0x550 [ 42.641841] ? rcu_lockdep_current_cpu_online+0xf2/0x140 [ 42.647305] ? __kmalloc+0x379/0x7a0 [ 42.651058] vfs_iter_write+0x77/0xb0 [ 42.654906] iter_file_splice_write+0x578/0xae0 [ 42.659585] ? touch_atime+0xce/0x250 [ 42.663376] ? page_cache_pipe_buf_steal+0x2f0/0x2f0 [ 42.668586] ? rw_verify_area+0xea/0x2b0 [ 42.672633] ? page_cache_pipe_buf_steal+0x2f0/0x2f0 [ 42.677725] direct_splice_actor+0x126/0x1a0 [ 42.682119] splice_direct_to_actor+0x2a1/0x7b0 [ 42.686836] ? generic_pipe_buf_nosteal+0x10/0x10 [ 42.691691] ? do_splice_to+0x170/0x170 [ 42.695653] ? rw_verify_area+0xea/0x2b0 [ 42.699774] do_splice_direct+0x18d/0x230 [ 42.703926] ? splice_direct_to_actor+0x7b0/0x7b0 [ 42.708865] ? rw_verify_area+0xea/0x2b0 [ 42.713316] do_sendfile+0x4db/0xbd0 [ 42.717021] ? do_compat_pwritev64+0x140/0x140 [ 42.721716] ? SyS_futex+0x215/0x302 [ 42.725421] ? SyS_futex+0x222/0x302 [ 42.729151] SyS_sendfile64+0x102/0x110 [ 42.733135] ? SyS_sendfile+0x130/0x130 [ 42.737114] ? do_syscall_64+0x53/0x630 [ 42.741086] ? SyS_sendfile+0x130/0x130 [ 42.745063] do_syscall_64+0x1eb/0x630 [ 42.749042] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 42.753956] entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 42.759485] RIP: 0033:0x44a989 [ 42.762655] RSP: 002b:00007fa4968abce8 EFLAGS: 00000246 ORIG_RAX: 0000000000000028 [ 42.770427] RAX: ffffffffffffffda RBX: 00000000006dbc48 RCX: 000000000044a989 [ 42.777789] RDX: 0000000000000000 RSI: 0000000000000005 RDI: 0000000000000004 [ 42.785042] RBP: 00000000006dbc40 R08: 0000000000000000 R09: 0000000000000000 [ 42.792366] R10: 0020000102000007 R11: 0000000000000246 R12: 00000000006dbc4c [ 42.799699] R13: 00007ffd18ea4a0f R14: 00007fa4968ac9c0 R15: 20c49ba5e353f7cf [ 42.807953] Kernel Offset: disabled [ 42.811637] Rebooting in 86400 seconds..