[....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[ 29.715957] random: sshd: uninitialized urandom read (32 bytes read) [?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 syzkaller login: [ 33.379472] random: sshd: uninitialized urandom read (32 bytes read) [ 33.942577] random: sshd: uninitialized urandom read (32 bytes read) [ 35.127799] random: sshd: uninitialized urandom read (32 bytes read) [ 35.345241] random: sshd: uninitialized urandom read (32 bytes read) Warning: Permanently added '10.128.0.34' (ECDSA) to the list of known hosts. [ 40.944492] random: sshd: uninitialized urandom read (32 bytes read) 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 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 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 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 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 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 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 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 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 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 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 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 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 [ 47.085513] ================================================================== [ 47.092904] BUG: KMSAN: uninit-value in __list_add_valid+0x2a4/0x450 [ 47.099376] CPU: 1 PID: 7577 Comm: syz-executor535 Not tainted 4.17.0+ #9 [ 47.106283] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 47.115613] Call Trace: [ 47.118183] dump_stack+0x185/0x1d0 [ 47.121788] kmsan_report+0x188/0x2a0 [ 47.125566] __msan_warning_32+0x70/0xc0 [ 47.129608] __list_add_valid+0x2a4/0x450 [ 47.133737] rdma_listen+0x65f/0x10f0 [ 47.137515] ucma_listen+0x4e9/0x630 [ 47.141209] ? ucma_connect+0x980/0x980 [ 47.145175] ucma_write+0x57e/0x5f0 [ 47.148783] ? show_ibdev+0xf0/0xf0 [ 47.152389] __vfs_write+0x1aa/0x9f0 [ 47.156086] vfs_write+0x467/0x8c0 [ 47.159606] __x64_sys_write+0x1bf/0x3e0 [ 47.163646] ? ksys_write+0x360/0x360 [ 47.167426] do_syscall_64+0x15b/0x230 [ 47.171303] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 47.176476] RIP: 0033:0x440969 [ 47.179640] RSP: 002b:00007ffe593efe88 EFLAGS: 00000207 ORIG_RAX: 0000000000000001 [ 47.187324] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000440969 [ 47.194570] RDX: 0000000000000010 RSI: 0000000020000000 RDI: 0000000000000003 [ 47.201820] RBP: 0000000000000000 R08: 00000000004002c8 R09: 00000000004002c8 [ 47.209076] R10: 00000000004002c8 R11: 0000000000000207 R12: 000000000000b7e7 [ 47.216332] R13: 0000000000401e60 R14: 0000000000000000 R15: 0000000000000000 [ 47.223580] [ 47.225182] Uninit was created at: [ 47.228705] kmsan_internal_poison_shadow+0xb8/0x1b0 [ 47.233787] kmsan_kmalloc+0x94/0x100 [ 47.237565] kmsan_slab_alloc+0x10/0x20 [ 47.241523] __kmalloc_node_track_caller+0xb35/0x11b0 [ 47.246707] __alloc_skb+0x2cb/0x9e0 [ 47.250416] sk_stream_alloc_skb+0x17c/0xcf0 [ 47.254810] tcp_sendmsg_locked+0x237e/0x6610 [ 47.259296] tcp_sendmsg+0xb2/0x100 [ 47.262904] inet_sendmsg+0x3fc/0x760 [ 47.266679] sock_write_iter+0x3bc/0x470 [ 47.270720] __vfs_write+0x808/0x9f0 [ 47.274410] vfs_write+0x467/0x8c0 [ 47.277927] __x64_sys_write+0x1bf/0x3e0 [ 47.281963] do_syscall_64+0x15b/0x230 [ 47.285826] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 47.290997] ================================================================== [ 47.298334] Disabling lock debugging due to kernel taint [ 47.303774] Kernel panic - not syncing: panic_on_warn set ... [ 47.303774] [ 47.311124] CPU: 1 PID: 7577 Comm: syz-executor535 Tainted: G B 4.17.0+ #9 [ 47.319413] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 47.328741] Call Trace: [ 47.331312] dump_stack+0x185/0x1d0 [ 47.334922] panic+0x3d0/0x990 [ 47.338095] kmsan_report+0x29e/0x2a0 [ 47.341872] __msan_warning_32+0x70/0xc0 [ 47.345911] __list_add_valid+0x2a4/0x450 [ 47.350050] rdma_listen+0x65f/0x10f0 [ 47.353839] ucma_listen+0x4e9/0x630 [ 47.357530] ? ucma_connect+0x980/0x980 [ 47.361483] ucma_write+0x57e/0x5f0 [ 47.365099] ? show_ibdev+0xf0/0xf0 [ 47.368717] __vfs_write+0x1aa/0x9f0 [ 47.372417] vfs_write+0x467/0x8c0 [ 47.375940] __x64_sys_write+0x1bf/0x3e0 [ 47.380243] ? ksys_write+0x360/0x360 [ 47.384028] do_syscall_64+0x15b/0x230 [ 47.387901] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 47.393074] RIP: 0033:0x440969 [ 47.396252] RSP: 002b:00007ffe593efe88 EFLAGS: 00000207 ORIG_RAX: 0000000000000001 [ 47.403937] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000440969 [ 47.411191] RDX: 0000000000000010 RSI: 0000000020000000 RDI: 0000000000000003 [ 47.418437] RBP: 0000000000000000 R08: 00000000004002c8 R09: 00000000004002c8 [ 47.425683] R10: 00000000004002c8 R11: 0000000000000207 R12: 000000000000b7e7 [ 47.432933] R13: 0000000000401e60 R14: 0000000000000000 R15: 0000000000000000 [ 47.440701] Dumping ftrace buffer: [ 47.444226] (ftrace buffer empty) [ 47.447910] Kernel Offset: disabled [ 47.451510] Rebooting in 86400 seconds..