[....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[ 17.216553] random: sshd: uninitialized urandom read (32 bytes read) [?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 syzkaller login: [ 21.564189] random: sshd: uninitialized urandom read (32 bytes read) [ 21.948577] random: sshd: uninitialized urandom read (32 bytes read) [ 22.628670] random: sshd: uninitialized urandom read (32 bytes read) [ 22.779266] random: sshd: uninitialized urandom read (32 bytes read) Warning: Permanently added '10.128.0.34' (ECDSA) to the list of known hosts. [ 28.236633] 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 [ 28.413481] kasan: CONFIG_KASAN_INLINE enabled [ 28.418114] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 28.425483] general protection fault: 0000 [#1] SMP KASAN [ 28.431011] CPU: 0 PID: 4469 Comm: syz-executor362 Not tainted 4.18.0-rc3+ #48 [ 28.438352] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 28.448709] RIP: 0010:do_raw_spin_lock+0x27/0x200 [ 28.453532] 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 [ 28.472694] RSP: 0018:ffff8801ba5ff7c8 EFLAGS: 00010292 [ 28.478040] RAX: dffffc0000000000 RBX: 0000000000000230 RCX: 0000000000000000 [ 28.485298] RDX: 0000000000000046 RSI: 0000000000000000 RDI: 0000000000000234 [ 28.492551] RBP: ffff8801ba5ff7f0 R08: 0000000000000001 R09: 0000000000000000 [ 28.499805] R10: ffffed003b2e4c4e R11: ffff8801d9726273 R12: dffffc0000000000 [ 28.507144] R13: ffff8801acd70a80 R14: ffff8801d9a1c198 R15: ffff8801d9a1c180 [ 28.514408] FS: 00007fb7d7b48700(0000) GS:ffff8801dae00000(0000) knlGS:0000000000000000 [ 28.522617] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 28.528491] CR2: 00007ffdadb07ed8 CR3: 00000001ac46a000 CR4: 00000000001406f0 [ 28.535772] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 28.543038] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 28.550294] Call Trace: [ 28.552885] _raw_spin_lock_bh+0x39/0x40 [ 28.556943] ? smap_list_hash_remove+0xa3/0x470 [ 28.561605] smap_list_hash_remove+0xa3/0x470 [ 28.566085] ? psock_map_pop.isra.26+0x3b0/0x3b0 [ 28.570824] ? do_raw_spin_unlock+0xa7/0x2f0 [ 28.575213] ? do_raw_spin_trylock+0x1c0/0x1c0 [ 28.579781] ? sock_hash_ctx_update_elem.isra.27+0xe5e/0x1690 [ 28.585651] ? trace_hardirqs_on+0xd/0x10 [ 28.589791] ? __local_bh_enable_ip+0x161/0x230 [ 28.594446] sock_hash_ctx_update_elem.isra.27+0x1140/0x1690 [ 28.600230] ? sock_map_free+0x530/0x530 [ 28.604280] ? save_stack+0xa9/0xd0 [ 28.607896] ? __fget+0x414/0x670 [ 28.611349] ? expand_files.part.8+0x9c0/0x9c0 [ 28.615921] ? lock_acquire+0x1e4/0x540 [ 28.619881] ? fs_reclaim_acquire+0x20/0x20 [ 28.624205] ? lock_acquire+0x1e4/0x540 [ 28.628177] sock_hash_update_elem+0x157/0x2f0 [ 28.632745] ? bpf_sock_hash_update+0x90/0x90 [ 28.637234] ? lock_release+0xa30/0xa30 [ 28.641198] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 28.646738] ? bpf_sock_hash_update+0x90/0x90 [ 28.651221] map_update_elem+0x5c4/0xc90 [ 28.655273] __x64_sys_bpf+0x32d/0x510 [ 28.659153] ? bpf_prog_get+0x20/0x20 [ 28.662951] do_syscall_64+0x1b9/0x820 [ 28.666846] ? finish_task_switch+0x1d3/0x890 [ 28.671339] ? syscall_return_slowpath+0x5e0/0x5e0 [ 28.676262] ? syscall_return_slowpath+0x31d/0x5e0 [ 28.681188] ? prepare_exit_to_usermode+0x3b0/0x3b0 [ 28.686196] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 28.691030] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 28.696205] RIP: 0033:0x445939 [ 28.699377] Code: e8 8c be 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 3b 11 fc ff c3 66 2e 0f 1f 84 00 00 00 00 [ 28.718543] RSP: 002b:00007fb7d7b47db8 EFLAGS: 00000297 ORIG_RAX: 0000000000000141 [ 28.726252] RAX: ffffffffffffffda RBX: 00000000006dbc24 RCX: 0000000000445939 [ 28.733536] RDX: 0000000000000020 RSI: 0000000020000180 RDI: 0000000000000002 [ 28.740794] RBP: 00000000006dbc20 R08: 0000000000000000 R09: 0000000000000000 [ 28.748052] R10: 0000000000000000 R11: 0000000000000297 R12: 0000000000000000 [ 28.755310] R13: 00007ffdd102deef R14: 00007fb7d7b489c0 R15: 0000000000000005 [ 28.762570] Modules linked in: [ 28.765753] Dumping ftrace buffer: [ 28.769282] (ftrace buffer empty) [ 28.773020] ---[ end trace b4f1fd4bd750ec8a ]--- [ 28.777794] RIP: 0010:do_raw_spin_lock+0x27/0x200 [ 28.782627] 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 [ 28.801813] RSP: 0018:ffff8801ba5ff7c8 EFLAGS: 00010292 [ 28.807179] RAX: dffffc0000000000 RBX: 0000000000000230 RCX: 0000000000000000 [ 28.814450] RDX: 0000000000000046 RSI: 0000000000000000 RDI: 0000000000000234 [ 28.821727] RBP: ffff8801ba5ff7f0 R08: 0000000000000001 R09: 0000000000000000 [ 28.828997] R10: ffffed003b2e4c4e R11: ffff8801d9726273 R12: dffffc0000000000 [ 28.836295] R13: ffff8801acd70a80 R14: ffff8801d9a1c198 R15: ffff8801d9a1c180 [ 28.843572] FS: 00007fb7d7b48700(0000) GS:ffff8801dae00000(0000) knlGS:0000000000000000 [ 28.851802] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 28.857687] CR2: 00007ffdadb07ed8 CR3: 00000001ac46a000 CR4: 00000000001406f0 [ 28.864969] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 28.872239] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 28.879519] Kernel panic - not syncing: Fatal exception in interrupt [ 28.886560] Dumping ftrace buffer: [ 28.890169] (ftrace buffer empty) [ 28.893858] Kernel Offset: disabled [ 28.897465] Rebooting in 86400 seconds..