Debian GNU/Linux 7 syzkaller ttyS0

2017/11/06 02:00:55 parsed 1 programs
2017/11/06 02:00:55 executed programs: 0
syzkaller login: [   18.034322] ------------[ cut here ]------------
[   18.034867] WARNING: CPU: 0 PID: 1 at kernel/signal.c:340 task_participate_group_stop+0x1ce/0x230
[   18.035618] Kernel panic - not syncing: panic_on_warn set ...
[   18.035618] 
[   18.036589] CPU: 0 PID: 1 Comm: init Not tainted 4.14.0-rc7-next-20171103+ #10
[   18.037304] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Bochs 01/01/2011
[   18.038116] Call Trace:
[   18.038381]  dump_stack+0x194/0x257
[   18.038745]  ? arch_local_irq_restore+0x53/0x53
[   18.039170]  ? vsnprintf+0x1ed/0x1900
[   18.039515]  panic+0x1e4/0x41c
[   18.039816]  ? refcount_error_report+0x214/0x214
[   18.040279]  ? show_regs_print_info+0x65/0x65
[   18.040729]  ? __warn+0x1a9/0x1e0
[   18.041067]  ? task_participate_group_stop+0x1ce/0x230
[   18.041546]  __warn+0x1c4/0x1e0
[   18.041848]  ? task_participate_group_stop+0x1ce/0x230
[   18.042316]  report_bug+0x211/0x2d0
[   18.042646]  fixup_bug+0x40/0x90
[   18.042948]  do_trap+0x260/0x390
[   18.043253]  ? map_id_up+0x23b/0x420
[   18.043592]  do_error_trap+0x120/0x390
[   18.043936]  ? find_held_lock+0x39/0x1d0
[   18.044301]  ? do_trap+0x390/0x390
[   18.044618]  ? task_participate_group_stop+0x1ce/0x230
[   18.045093]  ? trace_hardirqs_off_thunk+0x1a/0x1c
[   18.045528]  do_invalid_op+0x1b/0x20
[   18.045867]  invalid_op+0x18/0x20
[   18.046203] RIP: 0010:task_participate_group_stop+0x1ce/0x230
[   18.046768] RSP: 0018:ffff88003eb978b8 EFLAGS: 00010093
[   18.047293] RAX: ffff88003eb8a040 RBX: ffff88003eb8a040 RCX: ffffffff81441a7e
[   18.048015] RDX: 0000000000000000 RSI: 0000000000060013 RDI: ffff88003eb8a4c0
[   18.048741] RBP: ffff88003eb978d0 R08: 0000000000000000 R09: 0000000000000000
[   18.049392] R10: 0000000000000001 R11: ffffffff8744cca0 R12: ffff88006daa2040
[   18.050051] R13: 0000000000000000 R14: dffffc0000000000 R15: ffff88003eb8a5b8
[   18.050722]  ? task_participate_group_stop+0x1ce/0x230
[   18.051221]  ? task_participate_group_stop+0x1ce/0x230
[   18.051695]  ? do_signal_stop+0x486/0x910
[   18.052071]  do_signal_stop+0x217/0x910
[   18.052439]  ? ptrace_do_notify+0x310/0x310
[   18.052833]  ? __lock_is_held+0xbc/0x140
[   18.053242]  get_signal+0x55a/0x16d0
[   18.053636]  ? ptrace_notify+0x130/0x130
[   18.054041]  ? lock_downgrade+0x990/0x990
[   18.054424]  ? find_held_lock+0x39/0x1d0
[   18.054807]  ? lock_downgrade+0x990/0x990
[   18.055194]  do_signal+0x94/0x1ee0
[   18.055522]  ? __might_fault+0xe0/0x1d0
[   18.055905]  ? lock_release+0xd70/0xd70
[   18.056308]  ? setup_sigcontext+0x7d0/0x7d0
[   18.056751]  ? __might_sleep+0x95/0x190
[   18.057165]  ? _copy_to_user+0xa2/0xc0
[   18.057805]  ? poll_select_copy_remaining+0x38f/0x620
[   18.058286]  ? exit_to_usermode_loop+0x8c/0x310
[   18.058750]  exit_to_usermode_loop+0x214/0x310
[   18.059166]  ? trace_event_raw_event_sys_exit+0x260/0x260
[   18.059714]  ? kasan_check_write+0x14/0x20
[   18.060124]  syscall_return_slowpath+0x42f/0x510
[   18.060559]  ? prepare_exit_to_usermode+0x2d0/0x2d0
[   18.061016]  ? entry_SYSCALL_64_fastpath+0x91/0xbe
[   18.061476]  ? trace_hardirqs_on_caller+0x421/0x5c0
[   18.061987]  ? trace_hardirqs_on_thunk+0x1a/0x1c
[   18.062472]  entry_SYSCALL_64_fastpath+0xbc/0xbe
[   18.062941] RIP: 0033:0x7f265ea73dd3
[   18.063298] RSP: 002b:00007fff8feae138 EFLAGS: 00000246 ORIG_RAX: 0000000000000017
[   18.064043] RAX: fffffffffffffdfe RBX: 00007fff8feae2e0 RCX: 00007f265ea73dd3
[   18.064759] RDX: 0000000000000000 RSI: 00007fff8feae490 RDI: 000000000000000b
[   18.065467] RBP: 00007fff8feae490 R08: 00007fff8feae510 R09: 0000000000000001
[   18.066195] R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff
[   18.066920] R13: 00007fff8feae870 R14: 0000000000000000 R15: 0000000000000000
[   18.068876] Dumping ftrace buffer:
[   18.069331]    (ftrace buffer empty)
[   18.069707] Kernel Offset: disabled
[   18.070084] Rebooting in 86400 seconds..