[....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[ 34.223703] random: sshd: uninitialized urandom read (32 bytes read) [?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 syzkaller login: [ 36.163100] random: sshd: uninitialized urandom read (32 bytes read) [ 36.604086] random: sshd: uninitialized urandom read (32 bytes read) [ 38.020911] random: sshd: uninitialized urandom read (32 bytes read) [ 42.576637] random: sshd: uninitialized urandom read (32 bytes read) Warning: Permanently added '10.128.0.4' (ECDSA) to the list of known hosts. [ 48.066403] random: sshd: uninitialized urandom read (32 bytes read) executing program [ 48.192834] IPVS: ftp: loaded support on port[0] = 21 [ 48.232534] WARNING: CPU: 1 PID: 4585 at ./include/net/sock.h:644 smc_unhash_sk+0x37b/0x3f0 [ 48.241060] Kernel panic - not syncing: panic_on_warn set ... [ 48.241060] [ 48.248433] CPU: 1 PID: 4585 Comm: syz-executor478 Not tainted 4.18.0-rc5+ #29 [ 48.255781] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 48.265128] Call Trace: [ 48.267759] dump_stack+0x185/0x1e0 [ 48.271408] panic+0x3d0/0x9b0 [ 48.274606] __warn+0x40f/0x580 [ 48.277883] ? smc_unhash_sk+0x37b/0x3f0 [ 48.281956] report_bug+0x72a/0x880 [ 48.285583] ? smc_unhash_sk+0x37b/0x3f0 [ 48.289658] ? smc_unhash_sk+0x37b/0x3f0 [ 48.293743] do_error_trap+0x1fe/0x710 [ 48.297652] ? sock_destroy_inode+0xab/0xd0 [ 48.301991] ? sock_alloc_inode+0x2b0/0x2b0 [ 48.306331] do_invalid_op+0x46/0x50 [ 48.310103] invalid_op+0x14/0x20 [ 48.313573] RIP: 0010:smc_unhash_sk+0x37b/0x3f0 [ 48.318226] Code: d5 f7 e9 e5 fe ff ff 8b 7d d4 e8 30 95 d5 f7 e9 f7 fe ff ff 8b 3a e8 24 95 d5 f7 41 83 fe 01 0f 85 11 ff ff ff e8 95 e0 79 f7 <0f> 0b 4d 85 e4 0f 84 0f ff ff ff 8b 7d d4 e8 02 95 d5 f7 4d 85 e4 [ 48.337580] RSP: 0018:ffff88018f0cf9f8 EFLAGS: 00010293 [ 48.342949] RAX: ffffffff89ee446b RBX: ffff88018ff30080 RCX: ffff88018fc29d80 [ 48.350219] RDX: 0000000000000000 RSI: aaaaaaaaaaaab000 RDI: ffffea00095fb200 [ 48.357488] RBP: ffff88018f0cfa78 R08: 0000000000480020 R09: 0000000000000002 [ 48.364760] R10: 0000000000000000 R11: ffffffff89ee40f0 R12: 0000000000000000 [ 48.372040] R13: ffff88018ff30000 R14: 0000000000000001 R15: 00000000d0e000a1 [ 48.379332] ? smc_hash_sk+0x3a0/0x3a0 [ 48.383217] ? smc_unhash_sk+0x37b/0x3f0 [ 48.387301] ? smc_unhash_sk+0x37b/0x3f0 [ 48.391403] ? smc_hash_sk+0x3a0/0x3a0 [ 48.395285] smc_release+0x81b/0x900 [ 48.399034] ? smc_sock_alloc+0x830/0x830 [ 48.403228] sock_close+0x11e/0x360 [ 48.406854] __fput+0x458/0xa30 [ 48.410151] ? fput+0x300/0x300 [ 48.413455] ____fput+0x37/0x40 [ 48.416745] task_work_run+0x22e/0x2b0 [ 48.420637] do_exit+0x110e/0x3930 [ 48.424209] do_group_exit+0x1a0/0x360 [ 48.428119] __do_sys_exit_group+0x21/0x30 [ 48.432367] __se_sys_exit_group+0x14/0x20 [ 48.436618] __x64_sys_exit_group+0x4c/0x50 [ 48.440959] ? do_group_exit+0x360/0x360 [ 48.445030] do_syscall_64+0x15b/0x230 [ 48.448921] entry_SYSCALL_64_after_hwframe+0x63/0xe7 [ 48.454114] RIP: 0033:0x440789 [ 48.457288] Code: Bad RIP value. [ 48.460663] RSP: 002b:00007fff66813e68 EFLAGS: 00000202 ORIG_RAX: 00000000000000e7 [ 48.468381] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 0000000000440789 [ 48.475650] RDX: 0000000000440789 RSI: 0000000000000000 RDI: 0000000000000001 [ 48.482915] RBP: 00000000006cb018 R08: 0000000000000010 R09: 0000000000401d00 [ 48.490203] R10: 0000000020000140 R11: 0000000000000202 R12: 0000000000401c70 [ 48.497468] R13: 0000000000401d00 R14: 0000000000000000 R15: 0000000000000000 [ 48.505255] Dumping ftrace buffer: [ 48.508786] (ftrace buffer empty) [ 48.512484] Kernel Offset: disabled [ 48.516106] Rebooting in 86400 seconds..