[....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[ 15.900554] random: sshd: uninitialized urandom read (32 bytes read) [?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 syzkaller login: [ 20.054668] random: sshd: uninitialized urandom read (32 bytes read) [ 20.500841] random: sshd: uninitialized urandom read (32 bytes read) [ 21.249541] random: sshd: uninitialized urandom read (32 bytes read) [ 332.306280] random: sshd: uninitialized urandom read (32 bytes read) Warning: Permanently added '10.128.15.196' (ECDSA) to the list of known hosts. [ 337.802300] random: sshd: uninitialized urandom read (32 bytes read) [ 337.886231] IPVS: ftp: loaded support on port[0] = 21 [ 337.886344] IPVS: ftp: loaded support on port[0] = 21 [ 337.893768] IPVS: ftp: loaded support on port[0] = 21 [ 337.898856] IPVS: ftp: loaded support on port[0] = 21 [ 337.903891] IPVS: ftp: loaded support on port[0] = 21 [ 337.910417] IPVS: ftp: loaded support on port[0] = 21 [ 337.914324] IPVS: ftp: loaded support on port[0] = 21 [ 337.918693] IPVS: ftp: loaded support on port[0] = 21 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 338.253237] kasan: CONFIG_KASAN_INLINE enabled [ 338.257866] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 338.265264] general protection fault: 0000 [#1] SMP KASAN [ 338.270786] CPU: 0 PID: 4516 Comm: syz-executor129 Not tainted 4.18.0-rc3+ #121 [ 338.278206] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 338.287614] RIP: 0010:smc_ioctl+0x846/0xd00 [ 338.291908] Code: 48 c1 e9 03 80 3c 11 00 0f 85 29 04 00 00 4d 8b b6 a0 04 00 00 48 ba 00 00 00 00 00 fc ff df 49 8d 7e 20 48 89 f9 48 c1 e9 03 <0f> b6 14 11 84 d2 74 09 80 fa 03 0f 8e 65 03 00 00 48 8d 7b 02 41 [ 338.311026] RSP: 0018:ffff8801b258f750 EFLAGS: 00010202 [ 338.316367] RAX: ffff8801b258f7c8 RBX: ffff8801b258f788 RCX: 0000000000000004 [ 338.323612] RDX: dffffc0000000000 RSI: 1ffff100364b1ef9 RDI: 0000000000000020 [ 338.330868] RBP: ffff8801b258f9b0 R08: ffffed00364b1efa R09: ffffed00364b1ef9 [ 338.338114] R10: ffffed00364b1ef9 R11: ffff8801b258f7cf R12: 1ffff100364b1eed [ 338.345363] R13: 0000000020000040 R14: 0000000000000000 R15: 1ffff100364b1f11 [ 338.352611] FS: 00007fdddb23c700(0000) GS:ffff8801dae00000(0000) knlGS:0000000000000000 [ 338.360812] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 338.366667] CR2: 00007fdddb21ae78 CR3: 00000001b6c9a000 CR4: 00000000001406f0 [ 338.373917] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 338.381165] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 338.388410] Call Trace: [ 338.390982] ? smc_tx_prepared_sends+0x550/0x550 [ 338.395719] ? save_stack+0x43/0xd0 [ 338.399333] ? kasan_kmalloc+0xc4/0xe0 [ 338.403193] ? kasan_slab_alloc+0x12/0x20 [ 338.407320] ? get_empty_filp+0x12d/0x530 [ 338.411449] ? alloc_file+0x24/0x3e0 [ 338.415184] ? sock_alloc_file+0x1fb/0x500 [ 338.419410] ? __sys_socket+0x172/0x260 [ 338.423359] ? __x64_sys_socket+0x73/0xb0 [ 338.427486] ? do_futex+0x249/0x27d0 [ 338.431179] ? lock_acquire+0x1e4/0x540 [ 338.435132] ? fs_reclaim_acquire+0x20/0x20 [ 338.439431] ? lock_downgrade+0x8f0/0x8f0 [ 338.443558] ? exit_robust_list+0x290/0x290 [ 338.447856] ? __lockdep_init_map+0x105/0x590 [ 338.452326] ? lock_acquire+0x1e4/0x540 [ 338.456374] sock_do_ioctl+0xe4/0x3e0 [ 338.460151] ? compat_ifr_data_ioctl+0x170/0x170 [ 338.464890] ? lock_acquire+0x1e4/0x540 [ 338.468842] ? __fget+0x3eb/0x670 [ 338.472270] ? lock_downgrade+0x8f0/0x8f0 [ 338.476394] ? lock_release+0xa30/0xa30 [ 338.480346] ? lock_acquire+0x1e4/0x540 [ 338.484295] ? __fd_install+0x2b2/0x880 [ 338.488245] ? lock_downgrade+0x8f0/0x8f0 [ 338.492385] ? __sanitizer_cov_trace_switch+0x53/0x90 [ 338.497554] sock_ioctl+0x30d/0x680 [ 338.501158] ? dlci_ioctl_set+0x40/0x40 [ 338.505112] ? expand_files.part.8+0x9c0/0x9c0 [ 338.509676] ? __fd_install+0x2db/0x880 [ 338.513626] ? dlci_ioctl_set+0x40/0x40 [ 338.517577] do_vfs_ioctl+0x1de/0x1720 [ 338.521444] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 338.526957] ? alloc_file+0x44/0x3e0 [ 338.530648] ? ioctl_preallocate+0x300/0x300 [ 338.535034] ? __fget_light+0x2f7/0x440 [ 338.538985] ? fget_raw+0x20/0x20 [ 338.542426] ? get_unused_fd_flags+0x122/0x1a0 [ 338.546989] ? __alloc_fd+0x710/0x710 [ 338.550780] ? __x64_sys_futex+0x47f/0x6a0 [ 338.554991] ? fd_install+0x4d/0x60 [ 338.558607] ? do_futex+0x27d0/0x27d0 [ 338.562388] ? security_file_ioctl+0x94/0xc0 [ 338.566771] ksys_ioctl+0xa9/0xd0 [ 338.570205] __x64_sys_ioctl+0x73/0xb0 [ 338.574070] do_syscall_64+0x1b9/0x820 [ 338.577936] ? finish_task_switch+0x1d3/0x890 [ 338.582418] ? syscall_return_slowpath+0x5e0/0x5e0 [ 338.587585] ? syscall_return_slowpath+0x31d/0x5e0 [ 338.592501] ? prepare_exit_to_usermode+0x3b0/0x3b0 [ 338.597497] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 338.602368] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 338.607534] RIP: 0033:0x445e89 [ 338.610697] Code: e8 7c e6 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 eb 0c fc ff c3 66 2e 0f 1f 84 00 00 00 00 [ 338.629812] RSP: 002b:00007fdddb23bdb8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 338.637496] RAX: ffffffffffffffda RBX: 00000000006dbc3c RCX: 0000000000445e89 [ 338.644742] RDX: 0000000020000040 RSI: 0000000000008905 RDI: 000000000000006d executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 338.651988] RBP: 00000000006dbc38 R08: 0000000000000000 R09: 0000000000000000 [ 338.659235] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 338.666479] R13: 00007ffe54550fbf R14: 00007fdddb23c9c0 R15: 0000000000000004 [ 338.673728] Modules linked in: [ 338.676898] Dumping ftrace buffer: [ 338.680410] (ftrace buffer empty) [ 338.684220] ---[ end trace 924422afa249de86 ]--- [ 338.688982] RIP: 0010:smc_ioctl+0x846/0xd00 [ 338.693298] Code: 48 c1 e9 03 80 3c 11 00 0f 85 29 04 00 00 4d 8b b6 a0 04 00 00 48 ba 00 00 00 00 00 fc ff df 49 8d 7e 20 48 89 f9 48 c1 e9 03 <0f> b6 14 11 84 d2 74 09 80 fa 03 0f 8e 65 03 00 00 48 8d 7b 02 41 [ 338.712450] RSP: 0018:ffff8801b258f750 EFLAGS: 00010202 [ 338.717808] RAX: ffff8801b258f7c8 RBX: ffff8801b258f788 RCX: 0000000000000004 [ 338.725077] RDX: dffffc0000000000 RSI: 1ffff100364b1ef9 RDI: 0000000000000020 [ 338.732354] RBP: ffff8801b258f9b0 R08: ffffed00364b1efa R09: ffffed00364b1ef9 [ 338.739631] R10: ffffed00364b1ef9 R11: ffff8801b258f7cf R12: 1ffff100364b1eed [ 338.746898] R13: 0000000020000040 R14: 0000000000000000 R15: 1ffff100364b1f11 [ 338.754178] FS: 00007fdddb23c700(0000) GS:ffff8801dae00000(0000) knlGS:0000000000000000 [ 338.762401] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 338.768295] CR2: 00007fdddb21ae78 CR3: 00000001b6c9a000 CR4: 00000000001406f0 [ 338.775569] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 338.782837] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 338.790112] Kernel panic - not syncing: Fatal exception [ 338.795818] Dumping ftrace buffer: [ 338.799354] (ftrace buffer empty) [ 338.803044] Kernel Offset: disabled [ 338.806652] Rebooting in 86400 seconds..