[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. Starting mcstransd: [....] Starting file context maintaining daemon: restorecond[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[ 9.947600] random: sshd: uninitialized urandom read (32 bytes read) [?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 syzkaller login: [ 16.427302] random: crng init done Warning: Permanently added '10.128.0.82' (ECDSA) to the list of known hosts. executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 30.788063] ------------[ cut here ]------------ [ 30.795933] WARNING: CPU: 1 PID: 2167 at fs/attr.c:211 notify_change2+0xb0e/0xe00 [ 30.806279] Kernel panic - not syncing: panic_on_warn set ... [ 30.806279] [ 30.813651] CPU: 1 PID: 2167 Comm: syz-executor938 Not tainted 4.9.128+ #42 [ 30.820739] ffff8801cdd374e8 ffffffff81b2b9e9 ffffffff82a38c20 00000000ffffffff [ 30.828793] 0000000000000000 0000000000000001 00000000000000d3 ffff8801cdd375a8 [ 30.836877] ffffffff813f6665 0000000041b58ab3 ffffffff82e289c3 ffffffff813f64a6 [ 30.844933] Call Trace: [ 30.847531] [] dump_stack+0xc1/0x128 [ 30.852900] [] panic+0x1bf/0x39f [ 30.857911] [] ? add_taint.cold.6+0x16/0x16 [ 30.863891] [] ? shmem_xattr_handler_get+0x3e/0x50 [ 30.870460] [] ? shmem_xattr_handler_set+0x50/0x50 [ 30.877021] [] ? __warn.cold.9+0xa6/0x17f [ 30.882809] [] ? notify_change2+0xb0e/0xe00 [ 30.888767] [] __warn.cold.9+0xc1/0x17f [ 30.894391] [] warn_slowpath_null+0x2c/0x40 [ 30.900356] [] notify_change2+0xb0e/0xe00 [ 30.906142] [] ? cap_inode_need_killpriv+0x40/0x60 [ 30.912710] [] ? security_inode_need_killpriv+0x7f/0xb0 [ 30.919847] [] file_remove_privs+0x279/0x480 [ 30.925904] [] ? dentry_needs_remove_privs.part.12+0x60/0x60 [ 30.933343] [] ? kasan_kmalloc.part.1+0xc9/0xf0 [ 30.939785] [] ? save_stack_trace+0x16/0x20 [ 30.945751] [] ? kasan_kmalloc.part.1+0x62/0xf0 [ 30.952063] [] ? kasan_kmalloc+0xaf/0xc0 [ 30.957769] [] ? __kmalloc+0x12f/0x310 [ 30.963300] [] ? iter_file_splice_write+0x143/0xb30 [ 30.969963] [] ? direct_splice_actor+0x128/0x190 [ 30.976364] [] ? splice_direct_to_actor+0x2c1/0x7e0 [ 30.983023] [] ? do_splice_direct+0x1a3/0x270 [ 30.989166] [] ? do_sendfile+0x4f0/0xc30 [ 30.994874] [] ? SyS_sendfile64+0xd1/0x160 [ 31.000867] [] ? do_syscall_64+0x19f/0x550 [ 31.006769] [] ? entry_SYSCALL_64_after_swapgs+0x5d/0xdb [ 31.013904] [] __generic_file_write_iter+0x161/0x540 [ 31.020755] [] blkdev_write_iter+0x1b7/0x370 [ 31.026799] [] ? bd_acquire+0x250/0x250 [ 31.032420] [] ? nsecs_to_jiffies+0x30/0x30 [ 31.038384] [] vfs_iter_write+0x2d7/0x450 [ 31.044174] [] ? vfs_iter_read+0x3f0/0x3f0 [ 31.050062] [] ? splice_from_pipe_next.part.2+0x226/0x2e0 [ 31.057245] [] ? __kmalloc+0x12f/0x310 [ 31.062781] [] iter_file_splice_write+0x5fb/0xb30 [ 31.069269] [] ? vmsplice_to_user+0x1e0/0x1e0 [ 31.075925] [] ? avc_policy_seqno+0x9/0x20 [ 31.081797] [] ? selinux_file_permission+0x82/0x470 [ 31.088459] [] ? rw_verify_area+0xe5/0x2a0 [ 31.094356] [] ? vmsplice_to_user+0x1e0/0x1e0 [ 31.100496] [] direct_splice_actor+0x128/0x190 [ 31.106710] [] splice_direct_to_actor+0x2c1/0x7e0 [ 31.113201] [] ? pipe_to_sendpage+0x330/0x330 [ 31.119341] [] ? do_splice_to+0x170/0x170 [ 31.125139] [] ? security_file_permission+0x8f/0x1e0 [ 31.131884] [] ? rw_verify_area+0xe5/0x2a0 [ 31.137758] [] do_splice_direct+0x1a3/0x270 [ 31.143801] [] ? splice_direct_to_actor+0x7e0/0x7e0 [ 31.150460] [] ? rw_verify_area+0xe5/0x2a0 [ 31.156339] [] do_sendfile+0x4f0/0xc30 [ 31.161870] [] ? do_compat_pwritev64+0x180/0x180 [ 31.168271] [] ? __might_fault+0x114/0x1d0 [ 31.174156] [] SyS_sendfile64+0xd1/0x160 [ 31.179863] [] ? SyS_sendfile+0x160/0x160 [ 31.185706] [] ? do_syscall_64+0x48/0x550 [ 31.191498] [] ? SyS_sendfile+0x160/0x160 [ 31.197292] [] do_syscall_64+0x19f/0x550 [ 31.203004] [] entry_SYSCALL_64_after_swapgs+0x5d/0xdb [ 31.210280] Kernel Offset: disabled [ 31.213903] Rebooting in 86400 seconds..