[....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[ 17.229216] random: sshd: uninitialized urandom read (32 bytes read) [?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 syzkaller login: [ 19.121277] random: sshd: uninitialized urandom read (32 bytes read) [ 19.437983] random: sshd: uninitialized urandom read (32 bytes read) [ 20.200909] random: sshd: uninitialized urandom read (32 bytes read) [ 20.342282] random: sshd: uninitialized urandom read (32 bytes read) Warning: Permanently added '10.128.10.19' (ECDSA) to the list of known hosts. [ 25.856720] 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 [ 26.054743] kasan: CONFIG_KASAN_INLINE enabled [ 26.059410] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 26.066889] general protection fault: 0000 [#1] SMP KASAN [ 26.072505] CPU: 0 PID: 4491 Comm: syz-executor773 Not tainted 4.18.0-rc3+ #58 [ 26.080702] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 26.090236] RIP: 0010:do_raw_spin_lock+0x27/0x200 executing program [ 26.095082] 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 [ 26.114349] RSP: 0018:ffff8801abf8f9c0 EFLAGS: 00010286 [ 26.119721] RAX: dffffc0000000000 RBX: 0000000000000230 RCX: 0000000000000000 [ 26.134387] RDX: 0000000000000046 RSI: 0000000000000000 RDI: 0000000000000234 [ 26.141657] RBP: ffff8801abf8f9e8 R08: 0000000000000001 R09: 0000000000000000 executing program executing program [ 26.148916] R10: ffffed003b26fdf6 R11: ffff8801d937efb3 R12: dffffc0000000000 [ 26.156180] R13: ffff8801d902ce00 R14: 0000000000000220 R15: 0000000000000000 [ 26.163443] FS: 00007fbb1aa40700(0000) GS:ffff8801dae00000(0000) knlGS:0000000000000000 [ 26.171671] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 26.177548] CR2: 00007ffe1bd13ee0 CR3: 00000001ab8c8000 CR4: 00000000001406f0 [ 26.184815] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 26.192205] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 26.199472] Call Trace: executing program [ 26.202071] _raw_spin_lock_bh+0x39/0x40 [ 26.206147] ? smap_list_map_remove+0x96/0x350 [ 26.210760] smap_list_map_remove+0x96/0x350 [ 26.215165] ? __fget+0x414/0x670 [ 26.218608] ? smap_tx_work+0xcd0/0xcd0 [ 26.222834] ? expand_files.part.8+0x9c0/0x9c0 [ 26.227407] sock_map_ctx_update_elem.isra.21+0x3ab/0x570 [ 26.232930] ? __sock_map_ctx_update_elem.isra.20+0x1530/0x1530 [ 26.238991] ? lock_acquire+0x1e4/0x540 [ 26.242953] sock_map_update_elem+0x1b9/0x3b0 [ 26.247450] ? bpf_sock_map_update+0x60/0x60 [ 26.251845] ? lock_release+0xa30/0xa30 [ 26.255813] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 26.261344] ? bpf_sock_map_update+0x60/0x60 [ 26.265750] map_update_elem+0x5c4/0xc90 [ 26.269813] __x64_sys_bpf+0x32d/0x510 [ 26.273692] ? bpf_prog_get+0x20/0x20 [ 26.277490] ? ksys_ioctl+0x81/0xd0 [ 26.281117] do_syscall_64+0x1b9/0x820 [ 26.285439] ? finish_task_switch+0x1d3/0x890 [ 26.289932] ? syscall_return_slowpath+0x5e0/0x5e0 [ 26.294868] ? syscall_return_slowpath+0x31d/0x5e0 [ 26.299788] ? prepare_exit_to_usermode+0x3b0/0x3b0 [ 26.304796] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 26.309639] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 26.314820] RIP: 0033:0x4457b9 [ 26.317990] 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 [ 26.337123] RSP: 002b:00007fbb1aa3fdb8 EFLAGS: 00000297 ORIG_RAX: 0000000000000141 [ 26.344839] RAX: ffffffffffffffda RBX: 00000000006dac44 RCX: 00000000004457b9 [ 26.352098] RDX: 0000000000000020 RSI: 0000000020000180 RDI: 0000000000000002 [ 26.359355] RBP: 00000000006dac40 R08: 0000000000000000 R09: 0000000000000000 [ 26.366634] R10: 0000000000000000 R11: 0000000000000297 R12: 0000000000000000 [ 26.373894] R13: 00007ffd27c5d6cf R14: 00007fbb1aa409c0 R15: 0000000000000007 [ 26.381150] Modules linked in: [ 26.384329] Dumping ftrace buffer: [ 26.387855] (ftrace buffer empty) [ 26.391651] ---[ end trace 82c7c3aaa30a97ce ]--- [ 26.396464] RIP: 0010:do_raw_spin_lock+0x27/0x200 [ 26.401319] 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 [ 26.420495] RSP: 0018:ffff8801abf8f9c0 EFLAGS: 00010286 [ 26.425864] RAX: dffffc0000000000 RBX: 0000000000000230 RCX: 0000000000000000 [ 26.433142] RDX: 0000000000000046 RSI: 0000000000000000 RDI: 0000000000000234 [ 26.440427] RBP: ffff8801abf8f9e8 R08: 0000000000000001 R09: 0000000000000000 [ 26.447701] R10: ffffed003b26fdf6 R11: ffff8801d937efb3 R12: dffffc0000000000 [ 26.454982] R13: ffff8801d902ce00 R14: 0000000000000220 R15: 0000000000000000 [ 26.462256] FS: 00007fbb1aa40700(0000) GS:ffff8801dae00000(0000) knlGS:0000000000000000 [ 26.470501] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 26.476561] CR2: 00007ffe1bd13ee0 CR3: 00000001ab8c8000 CR4: 00000000001406f0 [ 26.483855] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 26.491131] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 26.498405] Kernel panic - not syncing: Fatal exception in interrupt [ 26.505310] Dumping ftrace buffer: [ 26.508828] (ftrace buffer empty) [ 26.512516] Kernel Offset: disabled [ 26.516133] Rebooting in 86400 seconds..