[....] Starting OpenBSD Secure Shell server: sshd[ 12.363151] random: sshd: uninitialized urandom read (32 bytes read) [?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 syzkaller login: [ 56.914491] random: sshd: uninitialized urandom read (32 bytes read) [ 57.612272] audit: type=1400 audit(1554786727.314:6): avc: denied { map } for pid=1782 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 [ 57.672128] random: sshd: uninitialized urandom read (32 bytes read) [ 58.180273] random: sshd: uninitialized urandom read (32 bytes read) [ 58.336241] random: sshd: uninitialized urandom read (32 bytes read) Warning: Permanently added '10.128.0.165' (ECDSA) to the list of known hosts. [ 63.916640] random: sshd: uninitialized urandom read (32 bytes read) executing program executing program [ 64.020708] audit: type=1400 audit(1554786733.724:7): avc: denied { map } for pid=1799 comm="syz-executor842" path="/root/syz-executor842174547" dev="sda1" ino=16481 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:object_r:user_home_t:s0 tclass=file permissive=1 [ 64.123315] ------------[ cut here ]------------ [ 64.128163] WARNING: CPU: 1 PID: 1806 at fs/attr.c:213 notify_change2+0xab8/0xd70 [ 64.135792] Kernel panic - not syncing: panic_on_warn set ... [ 64.135792] [ 64.143175] CPU: 1 PID: 1806 Comm: syz-executor842 Not tainted 4.14.111+ #51 [ 64.150488] Call Trace: [ 64.153315] dump_stack+0xb9/0x10e [ 64.156897] panic+0x1d9/0x3c2 [ 64.160112] ? add_taint.cold+0x16/0x16 [ 64.164107] ? notify_change2+0xab8/0xd70 [ 64.168439] ? __probe_kernel_read+0x163/0x1c0 [ 64.173305] ? notify_change2+0xab8/0xd70 [ 64.177510] __warn.cold+0x2f/0x3b [ 64.181248] ? notify_change2+0xab8/0xd70 [ 64.185542] ? report_bug+0x20a/0x248 [ 64.189357] ? do_error_trap+0x1bf/0x2d0 [ 64.193437] ? math_error+0x2d0/0x2d0 [ 64.197245] ? simple_xattr_get+0xe5/0x160 [ 64.201532] ? lock_downgrade+0x5d0/0x5d0 [ 64.205679] ? lock_acquire+0x10f/0x380 [ 64.209687] ? simple_xattr_get+0x2c/0x160 [ 64.214076] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 64.219213] ? invalid_op+0x18/0x40 [ 64.222889] ? notify_change2+0xab8/0xd70 [ 64.227068] ? file_remove_privs+0x263/0x410 [ 64.231692] ? dentry_needs_remove_privs.part.0+0x60/0x60 [ 64.237228] ? unwind_next_frame+0x4dd/0x17e0 [ 64.241725] ? deref_stack_reg+0xe0/0xe0 [ 64.245785] ? trace_hardirqs_on+0x10/0x10 [ 64.250073] ? __generic_file_write_iter+0x152/0x550 [ 64.255202] ? blkdev_write_iter+0x1fb/0x3d0 [ 64.259652] ? check_disk_change+0x120/0x120 [ 64.264064] ? kasan_kmalloc.part.0+0xa6/0xd0 [ 64.268566] ? do_splice_direct+0x177/0x240 [ 64.272879] ? do_sendfile+0x493/0xb20 [ 64.276769] ? do_iter_readv_writev+0x379/0x580 [ 64.281481] ? clone_verify_area+0x1e0/0x1e0 [ 64.285943] ? avc_policy_seqno+0x5/0x10 [ 64.290016] ? security_file_permission+0x88/0x1e0 [ 64.294963] ? do_iter_write+0x152/0x550 [ 64.299067] ? kasan_unpoison_shadow+0x30/0x40 [ 64.303688] ? kasan_kmalloc+0x76/0xc0 [ 64.307682] ? vfs_iter_write+0x70/0xa0 [ 64.311804] ? iter_file_splice_write+0x560/0xa50 [ 64.316657] ? generic_file_splice_read+0x377/0x540 [ 64.321679] ? vmsplice_to_user+0x1e0/0x1e0 [ 64.326003] ? add_to_pipe+0x350/0x350 [ 64.329900] ? security_file_permission+0x88/0x1e0 [ 64.334831] ? vmsplice_to_user+0x1e0/0x1e0 [ 64.339197] ? direct_splice_actor+0x118/0x160 [ 64.343895] ? splice_direct_to_actor+0x292/0x760 [ 64.348746] ? generic_pipe_buf_nosteal+0x10/0x10 [ 64.353602] ? do_splice_to+0x150/0x150 [ 64.357581] ? security_file_permission+0x88/0x1e0 [ 64.362525] ? do_splice_direct+0x177/0x240 [ 64.366911] ? splice_direct_to_actor+0x760/0x760 [ 64.371766] ? security_file_permission+0x88/0x1e0 [ 64.376765] ? do_sendfile+0x493/0xb20 [ 64.380789] ? do_compat_pwritev64+0x170/0x170 [ 64.385373] ? SyS_futex+0x1c5/0x2c3 [ 64.389080] ? SyS_futex+0x1cf/0x2c3 [ 64.392797] ? SyS_sendfile64+0x11f/0x140 [ 64.396948] ? SyS_sendfile+0x150/0x150 [ 64.400919] ? do_syscall_64+0x43/0x4b0 [ 64.404895] ? SyS_sendfile+0x150/0x150 [ 64.408997] ? do_syscall_64+0x19b/0x4b0 [ 64.413071] ? entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 64.418923] Kernel Offset: 0x8800000 from 0xffffffff81000000 (relocation range: 0xffffffff80000000-0xffffffffbfffffff) [ 64.429787] Rebooting in 86400 seconds..