[....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[ 33.644171] random: sshd: uninitialized urandom read (32 bytes read) [?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 syzkaller login: [ 37.324967] random: sshd: uninitialized urandom read (32 bytes read) [ 37.840594] random: sshd: uninitialized urandom read (32 bytes read) [ 39.232723] random: sshd: uninitialized urandom read (32 bytes read) [ 39.460576] random: sshd: uninitialized urandom read (32 bytes read) Warning: Permanently added '10.128.10.18' (ECDSA) to the list of known hosts. [ 45.069706] 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 [ 55.016088] ================================================================== [ 55.023594] BUG: KMSAN: uninit-value in do_msgrcv+0x8da/0x2580 [ 55.029578] CPU: 0 PID: 8871 Comm: syz-executor207 Not tainted 4.18.0-rc4+ #27 [ 55.036939] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 55.046302] Call Trace: [ 55.048903] dump_stack+0x185/0x1e0 [ 55.052547] kmsan_report+0x195/0x2c0 [ 55.056367] __msan_warning+0x7d/0xe0 [ 55.060184] do_msgrcv+0x8da/0x2580 executing program executing program executing program executing program executing program [ 55.063826] ? do_msgrcv+0x2580/0x2580 [ 55.067724] ? __schedule+0x67b/0x780 [ 55.071564] ? syscall_return_slowpath+0x108/0x800 [ 55.076514] __x64_sys_msgrcv+0x160/0x1b0 [ 55.080677] ? do_msg_fill+0x210/0x210 [ 55.084578] do_syscall_64+0x15b/0x230 [ 55.088488] entry_SYSCALL_64_after_hwframe+0x63/0xe7 [ 55.093685] RIP: 0033:0x449be9 [ 55.096884] Code: e8 0c e8 ff ff 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 7b d2 fb ff c3 66 2e 0f 1f 84 00 00 00 00 executing program executing program executing program executing program [ 55.116219] RSP: 002b:00007f92bfd3ada8 EFLAGS: 00000293 ORIG_RAX: 0000000000000046 [ 55.123943] RAX: ffffffffffffffda RBX: 00000000006dbc3c RCX: 0000000000449be9 [ 55.131222] RDX: 0000000000000001 RSI: 0000000020000200 RDI: 00000000057503c3 [ 55.138587] RBP: 0000000000000000 R08: 0000000000000800 R09: 0000000000000000 [ 55.145869] R10: 0000000000000000 R11: 0000000000000293 R12: 00000000006dbc38 [ 55.153150] R13: 7364612f7665642f R14: 646f6f7774736577 R15: 000000000000000a [ 55.160523] [ 55.162172] Uninit was created at: executing program executing program executing program executing program [ 55.165729] kmsan_internal_poison_shadow+0xc8/0x1d0 [ 55.170839] kmsan_kmalloc+0xa1/0x120 [ 55.174800] __kmalloc_node+0xe5d/0x1240 [ 55.178877] kvmalloc_node+0x19d/0x370 [ 55.182774] newque+0xb4/0x7d0 [ 55.185972] ipcget+0x29f/0xdb0 [ 55.189259] __x64_sys_msgget+0x159/0x1f0 [ 55.193411] do_syscall_64+0x15b/0x230 [ 55.197311] entry_SYSCALL_64_after_hwframe+0x63/0xe7 [ 55.202496] ================================================================== [ 55.209857] Disabling lock debugging due to kernel taint executing program executing program executing program executing program executing program [ 55.215306] Kernel panic - not syncing: panic_on_warn set ... [ 55.215306] [ 55.222678] CPU: 0 PID: 8871 Comm: syz-executor207 Tainted: G B 4.18.0-rc4+ #27 [ 55.231449] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 55.240810] Call Trace: [ 55.243416] dump_stack+0x185/0x1e0 [ 55.247060] panic+0x3d0/0x9b0 [ 55.250284] kmsan_report+0x2bf/0x2c0 [ 55.254226] __msan_warning+0x7d/0xe0 [ 55.258044] do_msgrcv+0x8da/0x2580 [ 55.261686] ? do_msgrcv+0x2580/0x2580 executing program executing program executing program executing program [ 55.265629] ? __schedule+0x67b/0x780 [ 55.269459] ? syscall_return_slowpath+0x108/0x800 [ 55.274413] __x64_sys_msgrcv+0x160/0x1b0 [ 55.278581] ? do_msg_fill+0x210/0x210 [ 55.282483] do_syscall_64+0x15b/0x230 [ 55.286391] entry_SYSCALL_64_after_hwframe+0x63/0xe7 [ 55.291580] RIP: 0033:0x449be9 [ 55.294769] Code: e8 0c e8 ff ff 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 7b d2 fb ff c3 66 2e 0f 1f 84 00 00 00 00 executing program executing program executing program [ 55.314160] RSP: 002b:00007f92bfd3ada8 EFLAGS: 00000293 ORIG_RAX: 0000000000000046 [ 55.321879] RAX: ffffffffffffffda RBX: 00000000006dbc3c RCX: 0000000000449be9 [ 55.329163] RDX: 0000000000000001 RSI: 0000000020000200 RDI: 00000000057503c3 [ 55.336432] RBP: 0000000000000000 R08: 0000000000000800 R09: 0000000000000000 [ 55.343721] R10: 0000000000000000 R11: 0000000000000293 R12: 00000000006dbc38 [ 55.351002] R13: 7364612f7665642f R14: 646f6f7774736577 R15: 000000000000000a [ 55.358756] Dumping ftrace buffer: [ 55.362312] (ftrace buffer empty) [ 55.366005] Kernel Offset: disabled [ 55.369614] Rebooting in 86400 seconds..