[....] Starting periodic command scheduler: cron[?25l[?1c7[1G[[32m ok [39;49m8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[ 15.472938] random: sshd: uninitialized urandom read (32 bytes read) [?25l[?1c7[1G[[32m ok [39;49m8[?25h[?0c. [ 16.418063] random: sshd: uninitialized urandom read (32 bytes read) [ 16.603443] random: sshd: uninitialized urandom read (32 bytes read) Debian GNU/Linux 7 syzkaller ttyS0 syzkaller login: [ 17.378365] random: sshd: uninitialized urandom read (32 bytes read) [ 849.567340] random: sshd: uninitialized urandom read (32 bytes read) Warning: Permanently added '10.128.15.198' (ECDSA) to the list of known hosts. [ 855.071591] 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 [ 855.275440] kasan: CONFIG_KASAN_INLINE enabled [ 855.280093] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 855.287666] general protection fault: 0000 [#1] SMP KASAN [ 855.293282] CPU: 1 PID: 4463 Comm: syz-executor964 Not tainted 4.18.0-rc3+ #58 [ 855.300643] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 855.310144] RIP: 0010:do_raw_spin_lock+0x27/0x200 executing program executing program [ 855.314984] Code: 00 00 00 48 b8 00 00 00 00 00 fc ff df 55 48 89 e5 41 56 41 55 41 54 53 48 89 fb 48 83 c7 04 48 89 fa 48 c1 ea 03 48 83 ec 08 <0f> b6 14 02 48 89 f8 83 e0 07 83 c0 03 38 d0 7c 08 84 d2 0f 85 7b [ 855.334518] RSP: 0018:ffff8801aba879c0 EFLAGS: 00010286 [ 855.339898] RAX: dffffc0000000000 RBX: 0000000000000230 RCX: 0000000000000000 [ 855.347276] RDX: 0000000000000046 RSI: 0000000000000000 RDI: 0000000000000234 [ 855.354824] RBP: ffff8801aba879e8 R08: 0000000000000001 R09: 0000000000000000 [ 855.362116] R10: ffffed003b26f8de R11: ffff8801d937c6f3 R12: dffffc0000000000 executing program executing program [ 855.369382] R13: ffff8801ab05ae00 R14: 0000000000000220 R15: 0000000000000000 [ 855.376656] FS: 00007f3ad3a7d700(0000) GS:ffff8801daf00000(0000) knlGS:0000000000000000 [ 855.384896] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 855.390782] CR2: 00007ffc465affd8 CR3: 00000001d79b2000 CR4: 00000000001406e0 [ 855.398068] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 855.405888] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 855.413297] Call Trace: [ 855.416012] _raw_spin_lock_bh+0x39/0x40 [ 855.420299] ? smap_list_map_remove+0x96/0x350 executing program [ 855.424884] smap_list_map_remove+0x96/0x350 [ 855.429358] ? __fget+0x414/0x670 [ 855.432819] ? smap_tx_work+0xcd0/0xcd0 [ 855.436803] ? expand_files.part.8+0x9c0/0x9c0 [ 855.441408] sock_map_ctx_update_elem.isra.21+0x3ab/0x570 [ 855.447242] ? __sock_map_ctx_update_elem.isra.20+0x1530/0x1530 [ 855.454683] ? lock_acquire+0x1e4/0x540 [ 855.458692] sock_map_update_elem+0x1b9/0x3b0 [ 855.463204] ? bpf_sock_map_update+0x60/0x60 [ 855.467625] ? lock_release+0xa30/0xa30 executing program executing program [ 855.471694] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 855.477242] ? bpf_sock_map_update+0x60/0x60 [ 855.481753] map_update_elem+0x5c4/0xc90 [ 855.485837] __x64_sys_bpf+0x32d/0x510 [ 855.489749] ? bpf_prog_get+0x20/0x20 [ 855.493647] do_syscall_64+0x1b9/0x820 [ 855.497606] ? finish_task_switch+0x1d3/0x890 [ 855.502103] ? syscall_return_slowpath+0x5e0/0x5e0 [ 855.507034] ? syscall_return_slowpath+0x31d/0x5e0 [ 855.512005] ? prepare_exit_to_usermode+0x3b0/0x3b0 [ 855.517082] ? trace_hardirqs_off_thunk+0x1a/0x1c executing program executing program [ 855.522281] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 855.527489] RIP: 0033:0x445d19 [ 855.530670] Code: e8 2c b7 02 00 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 2b 12 fc ff c3 66 2e 0f 1f 84 00 00 00 00 [ 855.549994] RSP: 002b:00007f3ad3a7cce8 EFLAGS: 00000246 ORIG_RAX: 0000000000000141 [ 855.557790] RAX: ffffffffffffffda RBX: 00000000006dac24 RCX: 0000000000445d19 [ 855.565275] RDX: 0000000000000020 RSI: 0000000020000180 RDI: 0000000000000002 [ 855.572562] RBP: 00000000006dac20 R08: 0000000000000000 R09: 0000000000000000 [ 855.579876] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 855.587151] R13: 00007fff3031af4f R14: 00007f3ad3a7d9c0 R15: 0000000000000005 [ 855.594428] Modules linked in: [ 855.597632] Dumping ftrace buffer: [ 855.601182] (ftrace buffer empty) [ 855.604959] ---[ end trace e5143b6cd870df87 ]--- [ 855.609792] RIP: 0010:do_raw_spin_lock+0x27/0x200 [ 855.614707] Code: 00 00 00 48 b8 00 00 00 00 00 fc ff df 55 48 89 e5 41 56 41 55 41 54 53 48 89 fb 48 83 c7 04 48 89 fa 48 c1 ea 03 48 83 ec 08 <0f> b6 14 02 48 89 f8 83 e0 07 83 c0 03 38 d0 7c 08 84 d2 0f 85 7b [ 855.633940] RSP: 0018:ffff8801aba879c0 EFLAGS: 00010286 [ 855.639435] RAX: dffffc0000000000 RBX: 0000000000000230 RCX: 0000000000000000 [ 855.646757] RDX: 0000000000000046 RSI: 0000000000000000 RDI: 0000000000000234 [ 855.661107] RBP: ffff8801aba879e8 R08: 0000000000000001 R09: 0000000000000000 [ 855.668457] R10: ffffed003b26f8de R11: ffff8801d937c6f3 R12: dffffc0000000000 [ 855.675792] R13: ffff8801ab05ae00 R14: 0000000000000220 R15: 0000000000000000 [ 855.683586] FS: 00007f3ad3a7d700(0000) GS:ffff8801daf00000(0000) knlGS:0000000000000000 [ 855.691868] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 855.697820] CR2: 00007ffc465affd8 CR3: 00000001d79b2000 CR4: 00000000001406e0 [ 855.705152] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 855.712494] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 855.719823] Kernel panic - not syncing: Fatal exception in interrupt [ 855.726922] Dumping ftrace buffer: [ 855.730538] (ftrace buffer empty) [ 855.734235] Kernel Offset: disabled [ 855.737892] Rebooting in 86400 seconds..