[....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[ 15.290382] random: sshd: uninitialized urandom read (32 bytes read) [?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 syzkaller login: [ 20.298959] random: sshd: uninitialized urandom read (32 bytes read) [ 20.539152] random: sshd: uninitialized urandom read (32 bytes read) [ 21.234701] random: sshd: uninitialized urandom read (32 bytes read) [ 21.369614] random: sshd: uninitialized urandom read (32 bytes read) Warning: Permanently added '10.128.0.47' (ECDSA) to the list of known hosts. [ 26.810425] 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 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 27.311917] kasan: CONFIG_KASAN_INLINE enabled [ 27.316517] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 27.323857] general protection fault: 0000 [#1] SMP KASAN [ 27.329376] CPU: 0 PID: 4486 Comm: syz-executor413 Not tainted 4.18.0-rc3+ #48 [ 27.336711] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 27.346057] RIP: 0010:perf_trace_lock_acquire+0xc8/0x9a0 [ 27.351478] Code: 20 f2 f2 f2 f2 c7 40 24 00 f2 f2 f2 65 48 8b 04 25 28 00 00 00 48 89 45 d0 31 c0 48 8d 46 18 48 89 85 70 fe ff ff 48 c1 e8 03 <80> 3c 10 00 0f 85 8a 05 00 00 49 8b 79 18 48 85 ff 0f 84 72 04 00 [ 27.370599] RSP: 0018:ffff8801ac3ef508 EFLAGS: 00010002 [ 27.375941] RAX: 000000000000004c RBX: 1ffff1003587deab RCX: 0000000000000000 [ 27.383189] RDX: dffffc0000000000 RSI: 0000000000000248 RDI: ffffffff88f7b740 [ 27.390450] RBP: ffff8801ac3ef6e0 R08: 0000000000000000 R09: 0000000000000248 [ 27.397698] R10: ffffffff815dfe10 R11: dffffc0000000000 R12: ffff8801ac3ef6b8 [ 27.405032] R13: 0000000000000000 R14: 0000000000000001 R15: ffffffff88f7b740 [ 27.412281] FS: 00007fab26aad700(0000) GS:ffff8801dae00000(0000) knlGS:0000000000000000 [ 27.420484] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 27.426343] CR2: 00007f535f2fac20 CR3: 00000001bcefe000 CR4: 00000000001406f0 [ 27.433596] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 27.440844] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 27.448089] Call Trace: [ 27.450663] ? trace_hardirqs_on+0x10/0x10 [ 27.454879] ? perf_trace_lock+0x920/0x920 [ 27.459099] ? is_bpf_text_address+0xd7/0x170 [ 27.463579] ? kernel_text_address+0x79/0xf0 [ 27.467968] ? __kernel_text_address+0xd/0x40 [ 27.472443] ? unwind_get_return_address+0x61/0xa0 [ 27.477352] ? __save_stack_trace+0x8d/0xf0 [ 27.481654] ? perf_trace_lock_acquire+0xeb/0x9a0 [ 27.486476] ? perf_trace_lock+0x920/0x920 [ 27.490690] ? save_stack+0xa9/0xd0 [ 27.494298] ? save_stack+0x43/0xd0 [ 27.497909] lock_acquire+0x3a2/0x540 [ 27.501691] ? smap_list_hash_remove+0xa3/0x470 [ 27.506341] ? lock_release+0xa30/0xa30 [ 27.510296] ? perf_trace_lock+0x920/0x920 [ 27.514509] ? is_bpf_text_address+0xae/0x170 [ 27.518986] _raw_spin_lock_bh+0x31/0x40 [ 27.523031] ? smap_list_hash_remove+0xa3/0x470 [ 27.527681] smap_list_hash_remove+0xa3/0x470 [ 27.532159] ? psock_map_pop.isra.26+0x3b0/0x3b0 [ 27.536896] ? do_raw_spin_unlock+0xa7/0x2f0 [ 27.541282] ? do_raw_spin_trylock+0x1c0/0x1c0 [ 27.545844] ? sock_hash_ctx_update_elem.isra.27+0xe5e/0x1690 [ 27.551706] ? trace_hardirqs_on+0xd/0x10 [ 27.555836] ? __local_bh_enable_ip+0x161/0x230 [ 27.560491] sock_hash_ctx_update_elem.isra.27+0x1140/0x1690 [ 27.566270] ? sock_map_free+0x530/0x530 [ 27.570313] ? __fget+0x414/0x670 [ 27.573757] ? expand_files.part.8+0x9c0/0x9c0 [ 27.578321] ? lock_acquire+0x1e4/0x540 [ 27.582283] ? lock_acquire+0x1e4/0x540 [ 27.586240] sock_hash_update_elem+0x157/0x2f0 [ 27.590803] ? bpf_sock_hash_update+0x90/0x90 [ 27.595277] ? lock_release+0xa30/0xa30 [ 27.599247] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 27.604766] ? bpf_sock_hash_update+0x90/0x90 [ 27.609245] map_update_elem+0x5c4/0xc90 [ 27.613296] __x64_sys_bpf+0x32d/0x510 [ 27.617162] ? bpf_prog_get+0x20/0x20 [ 27.620948] do_syscall_64+0x1b9/0x820 [ 27.624817] ? syscall_return_slowpath+0x5e0/0x5e0 [ 27.629736] ? syscall_return_slowpath+0x31d/0x5e0 [ 27.634647] ? prepare_exit_to_usermode+0x3b0/0x3b0 [ 27.639644] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 27.644467] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 27.649633] RIP: 0033:0x445f89 [ 27.652797] Code: e8 bc e7 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 2b 0e fc ff c3 66 2e 0f 1f 84 00 00 00 00 [ 27.671923] RSP: 002b:00007fab26aacdb8 EFLAGS: 00000246 ORIG_RAX: 0000000000000141 [ 27.679612] RAX: ffffffffffffffda RBX: 00000000006dac5c RCX: 0000000000445f89 [ 27.686866] RDX: 0000000000000020 RSI: 0000000020000180 RDI: 0000000000000002 [ 27.694114] RBP: 00000000006dac58 R08: 0000000000000000 R09: 0000000000000000 [ 27.701361] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 27.708609] R13: 00007ffe527a045f R14: 00007fab26aad9c0 R15: 000000000000000b [ 27.715857] Modules linked in: [ 27.719032] Dumping ftrace buffer: [ 27.722545] (ftrace buffer empty) [ 27.726252] ---[ end trace 4d4983d04d49336b ]--- [ 27.730998] RIP: 0010:perf_trace_lock_acquire+0xc8/0x9a0 [ 27.736425] Code: 20 f2 f2 f2 f2 c7 40 24 00 f2 f2 f2 65 48 8b 04 25 28 00 00 00 48 89 45 d0 31 c0 48 8d 46 18 48 89 85 70 fe ff ff 48 c1 e8 03 <80> 3c 10 00 0f 85 8a 05 00 00 49 8b 79 18 48 85 ff 0f 84 72 04 00 [ 27.755559] RSP: 0018:ffff8801ac3ef508 EFLAGS: 00010002 [ 27.760907] RAX: 000000000000004c RBX: 1ffff1003587deab RCX: 0000000000000000 [ 27.768154] RDX: dffffc0000000000 RSI: 0000000000000248 RDI: ffffffff88f7b740 [ 27.775400] RBP: ffff8801ac3ef6e0 R08: 0000000000000000 R09: 0000000000000248 [ 27.782657] R10: ffffffff815dfe10 R11: dffffc0000000000 R12: ffff8801ac3ef6b8 [ 27.789906] R13: 0000000000000000 R14: 0000000000000001 R15: ffffffff88f7b740 [ 27.797159] FS: 00007fab26aad700(0000) GS:ffff8801dae00000(0000) knlGS:0000000000000000 [ 27.805362] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 27.811223] CR2: 00007f535f2fac20 CR3: 00000001bcefe000 CR4: 00000000001406f0 [ 27.818477] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 27.825724] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 27.832975] Kernel panic - not syncing: Fatal exception in interrupt [ 27.839910] Dumping ftrace buffer: [ 27.843433] (ftrace buffer empty) [ 27.847117] Kernel Offset: disabled [ 27.850731] Rebooting in 86400 seconds..