[....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[ 15.979137] random: sshd: uninitialized urandom read (32 bytes read) [?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 syzkaller login: [ 20.794300] random: sshd: uninitialized urandom read (32 bytes read) [ 20.989510] random: sshd: uninitialized urandom read (32 bytes read) [ 21.694278] random: sshd: uninitialized urandom read (32 bytes read) [ 21.830068] random: sshd: uninitialized urandom read (32 bytes read) Warning: Permanently added '10.128.0.56' (ECDSA) to the list of known hosts. [ 27.230124] 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 [ 27.415693] kasan: CONFIG_KASAN_INLINE enabled [ 27.420385] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 27.427832] general protection fault: 0000 [#1] SMP KASAN [ 27.433400] CPU: 1 PID: 4466 Comm: syz-executor868 Not tainted 4.18.0-rc3+ #48 [ 27.440763] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 27.450131] RIP: 0010:do_raw_spin_lock+0x27/0x200 [ 27.454960] 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 [ 27.474174] RSP: 0018:ffff8801ac7477c8 EFLAGS: 00010292 [ 27.479541] RAX: dffffc0000000000 RBX: 0000000000000230 RCX: 0000000000000000 [ 27.486806] RDX: 0000000000000046 RSI: 0000000000000000 RDI: 0000000000000234 [ 27.494075] RBP: ffff8801ac7477f0 R08: 0000000000000001 R09: 0000000000000000 [ 27.501348] R10: ffffed00358fc9fe R11: ffff8801ac7e4ff3 R12: dffffc0000000000 [ 27.508628] R13: ffff8801ba046340 R14: ffff8801ccccba98 R15: ffff8801ccccba80 [ 27.515899] FS: 00007f096c800700(0000) GS:ffff8801daf00000(0000) knlGS:0000000000000000 [ 27.524122] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 27.530009] CR2: 00007f096c7dee78 CR3: 00000001acbbc000 CR4: 00000000001406e0 [ 27.537286] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 27.544553] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 27.551811] Call Trace: [ 27.554407] _raw_spin_lock_bh+0x39/0x40 [ 27.558476] ? smap_list_hash_remove+0xa3/0x470 [ 27.563148] smap_list_hash_remove+0xa3/0x470 [ 27.567646] ? psock_map_pop.isra.26+0x3b0/0x3b0 [ 27.572407] ? do_raw_spin_unlock+0xa7/0x2f0 [ 27.577090] ? do_raw_spin_trylock+0x1c0/0x1c0 [ 27.581676] ? sock_hash_ctx_update_elem.isra.27+0xe5e/0x1690 [ 27.587556] ? trace_hardirqs_on+0xd/0x10 [ 27.591700] ? __local_bh_enable_ip+0x161/0x230 [ 27.596404] sock_hash_ctx_update_elem.isra.27+0x1140/0x1690 [ 27.602203] ? sock_map_free+0x530/0x530 [ 27.606273] ? save_stack+0xa9/0xd0 [ 27.609897] ? __fget+0x414/0x670 [ 27.613360] ? expand_files.part.8+0x9c0/0x9c0 [ 27.618046] ? lock_acquire+0x1e4/0x540 [ 27.622043] ? fs_reclaim_acquire+0x20/0x20 [ 27.626372] ? lock_acquire+0x1e4/0x540 [ 27.630448] sock_hash_update_elem+0x157/0x2f0 [ 27.635047] ? bpf_sock_hash_update+0x90/0x90 [ 27.639541] ? lock_release+0xa30/0xa30 [ 27.643513] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 27.649055] ? bpf_sock_hash_update+0x90/0x90 [ 27.653552] map_update_elem+0x5c4/0xc90 [ 27.657620] __x64_sys_bpf+0x32d/0x510 [ 27.661504] ? bpf_prog_get+0x20/0x20 [ 27.665311] do_syscall_64+0x1b9/0x820 [ 27.669199] ? finish_task_switch+0x1d3/0x890 [ 27.673714] ? syscall_return_slowpath+0x5e0/0x5e0 [ 27.678646] ? syscall_return_slowpath+0x31d/0x5e0 [ 27.683591] ? prepare_exit_to_usermode+0x3b0/0x3b0 [ 27.688611] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 27.693455] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 27.698635] RIP: 0033:0x445689 [ 27.701808] Code: e8 3c b6 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 [ 27.720977] RSP: 002b:00007f096c7ffdb8 EFLAGS: 00000297 ORIG_RAX: 0000000000000141 [ 27.728709] RAX: ffffffffffffffda RBX: 00000000006dac24 RCX: 0000000000445689 [ 27.735997] RDX: 0000000000000020 RSI: 0000000020000180 RDI: 0000000000000002 [ 27.743272] RBP: 00000000006dac20 R08: 0000000000000000 R09: 0000000000000000 [ 27.750545] R10: 0000000000000000 R11: 0000000000000297 R12: 0000000000000000 [ 27.757809] R13: 00007ffe64321fdf R14: 00007f096c8009c0 R15: 0000000000000005 [ 27.765073] Modules linked in: [ 27.768266] Dumping ftrace buffer: [ 27.771796] (ftrace buffer empty) [ 27.775557] ---[ end trace 21e7d8776b91a06d ]--- [ 27.780350] RIP: 0010:do_raw_spin_lock+0x27/0x200 [ 27.785219] 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 [ 27.804382] RSP: 0018:ffff8801ac7477c8 EFLAGS: 00010292 [ 27.809781] RAX: dffffc0000000000 RBX: 0000000000000230 RCX: 0000000000000000 [ 27.817089] RDX: 0000000000000046 RSI: 0000000000000000 RDI: 0000000000000234 [ 27.824403] RBP: ffff8801ac7477f0 R08: 0000000000000001 R09: 0000000000000000 [ 27.831709] R10: ffffed00358fc9fe R11: ffff8801ac7e4ff3 R12: dffffc0000000000 [ 27.839030] R13: ffff8801ba046340 R14: ffff8801ccccba98 R15: ffff8801ccccba80 [ 27.846334] FS: 00007f096c800700(0000) GS:ffff8801daf00000(0000) knlGS:0000000000000000 [ 27.854583] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 27.860487] CR2: 00007f096c7dee78 CR3: 00000001acbbc000 CR4: 00000000001406e0 [ 27.868060] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 27.875362] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 27.882659] Kernel panic - not syncing: Fatal exception in interrupt [ 27.889637] Dumping ftrace buffer: [ 27.893173] (ftrace buffer empty) [ 27.896969] Kernel Offset: disabled [ 27.900610] Rebooting in 86400 seconds..