INIT: Entering runlevel: 2 [info] Using makefile-style concurrent boot in runlevel 2. [....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 Warning: Permanently added 'ci-upstream-mmots-kasan-gce-8,10.128.15.205' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 33.028762] ------------[ cut here ]------------ [ 33.029484] WARNING: CPU: 1 PID: 2985 at ./include/net/sock.h:1507 strp_data_ready+0x2b7/0x390 [ 33.030758] Kernel panic - not syncing: panic_on_warn set ... [ 33.030758] [ 33.031727] CPU: 1 PID: 2985 Comm: syzkaller365210 Not tainted 4.14.0-rc5-mm1+ #20 [ 33.032735] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 33.033956] Call Trace: [ 33.034335] dump_stack+0x194/0x257 [ 33.034826] ? arch_local_irq_restore+0x53/0x53 [ 33.035450] ? vsnprintf+0x1ed/0x1900 [ 33.035971] panic+0x1e4/0x41c [ 33.036415] ? refcount_error_report+0x214/0x214 [ 33.037046] ? show_regs_print_info+0x65/0x65 [ 33.037653] ? __warn+0x1a9/0x1e0 [ 33.038122] ? strp_data_ready+0x2b7/0x390 [ 33.038687] __warn+0x1c4/0x1e0 [ 33.039141] ? strp_data_ready+0x2b7/0x390 [ 33.039708] report_bug+0x211/0x2d0 [ 33.040261] fixup_bug+0x40/0x90 [ 33.040716] do_trap+0x260/0x390 [ 33.041178] do_error_trap+0x120/0x390 [ 33.041702] ? sk_filter_trim_cap+0x3f3/0x9b0 [ 33.042308] ? do_trap+0x390/0x390 [ 33.042788] ? strp_data_ready+0x2b7/0x390 [ 33.043366] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 33.044017] do_invalid_op+0x1b/0x20 [ 33.044534] invalid_op+0x18/0x20 [ 33.044999] RIP: 0010:strp_data_ready+0x2b7/0x390 [ 33.045640] RSP: 0018:ffff8801c1bcf7d8 EFLAGS: 00010293 [ 33.046373] RAX: ffff8801d1dd60c0 RBX: ffff8801c06afc48 RCX: ffffffff847b0437 [ 33.047343] RDX: 0000000000000000 RSI: ffff8801c04300a0 RDI: ffffffff85cc4e60 [ 33.048298] RBP: ffff8801c1bcf7f8 R08: 0000000000000002 R09: 1ffffffff0cddfc6 [ 33.049249] R10: ffff8801c1bcf6c0 R11: 1ffff1003a3bae73 R12: ffff8801c0430000 [ 33.056484] R13: ffff8801c06afc50 R14: ffff8801c1bcf960 R15: ffff8801c0430000 [ 33.063731] ? strp_data_ready+0x2b7/0x390 [ 33.067938] ? strp_data_ready+0x2b7/0x390 [ 33.072144] psock_data_ready+0x56/0x70 [ 33.076087] unix_dgram_sendmsg+0xa72/0x1600 [ 33.080475] ? unix_shutdown+0x870/0x870 [ 33.084499] ? lock_downgrade+0x990/0x990 [ 33.088616] ? lock_release+0xa40/0xa40 [ 33.092572] unix_seqpacket_sendmsg+0xf3/0x160 [ 33.097119] ? unix_dgram_sendmsg+0x1600/0x1600 [ 33.101755] sock_sendmsg+0xca/0x110 [ 33.105435] ___sys_sendmsg+0x31c/0x890 [ 33.109379] ? copy_msghdr_from_user+0x590/0x590 [ 33.114115] ? __fget_light+0x297/0x380 [ 33.118057] ? fget_raw+0x20/0x20 [ 33.121484] ? __do_page_fault+0x64c/0xd60 [ 33.125695] ? __fdget+0x18/0x20 [ 33.129033] __sys_sendmmsg+0x1e6/0x5f0 [ 33.132974] ? __sys_sendmmsg+0x1e6/0x5f0 [ 33.137094] ? SyS_sendmsg+0x50/0x50 [ 33.140780] ? mm_fault_error+0x2c0/0x2c0 [ 33.144893] ? do_vfs_ioctl+0x486/0x1520 [ 33.148920] ? _cond_resched+0x14/0x30 [ 33.152782] ? __do_page_fault+0xd60/0xd60 [ 33.156986] ? __fd_install+0x66b/0x6a0 [ 33.160927] ? sock_map_fd+0x53/0x70 [ 33.164612] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 33.169597] SyS_sendmmsg+0x35/0x60 [ 33.173192] entry_SYSCALL_64_fastpath+0x1f/0xbe [ 33.177915] RIP: 0033:0x440309 [ 33.181070] RSP: 002b:00007ffdacbf2848 EFLAGS: 00000217 ORIG_RAX: 0000000000000133 [ 33.188742] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 0000000000440309 [ 33.195984] RDX: 0000000000000003 RSI: 00000000204eff4c RDI: 0000000000000004 [ 33.203218] RBP: 0000000000000082 R08: 0000000000401c70 R09: 0000000000401c70 [ 33.210454] R10: 0000000000000000 R11: 0000000000000217 R12: 0000000000401c70 [ 33.217690] R13: 0000000000401d00 R14: 0000000000000000 R15: 0000000000000000 [ 33.225043] Dumping ftrace buffer: [ 33.228609] (ftrace buffer empty) [ 33.232288] Kernel Offset: disabled [ 33.235887] Rebooting in 86400 seconds..