2017/09/10 04:40:10 parsed 1 programs 2017/09/10 04:40:10 executed programs: 0 syzkaller login: [ 27.594573] ------------[ cut here ]------------ [ 27.595256] WARNING: CPU: 0 PID: 1 at kernel/signal.c:340 task_participate_group_stop+0x1ce/0x230 [ 27.596292] Kernel panic - not syncing: panic_on_warn set ... [ 27.596292] [ 27.596991] CPU: 0 PID: 1 Comm: init Not tainted 4.13.0-next-20170908+ #18 [ 27.597682] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Bochs 01/01/2011 [ 27.598426] Call Trace: [ 27.598679] dump_stack+0x194/0x257 [ 27.599389] ? arch_local_irq_restore+0x53/0x53 [ 27.599840] panic+0x1e4/0x417 [ 27.600122] ? __warn+0x1d9/0x1d9 [ 27.600444] ? show_regs_print_info+0x65/0x65 [ 27.600863] ? task_participate_group_stop+0x1ce/0x230 [ 27.601316] __warn+0x1c4/0x1d9 [ 27.601613] ? task_participate_group_stop+0x1ce/0x230 [ 27.602104] report_bug+0x211/0x2d0 [ 27.602459] fixup_bug+0x40/0x90 [ 27.602773] do_trap+0x260/0x390 [ 27.603096] do_error_trap+0x120/0x390 [ 27.603440] ? do_trap+0x390/0x390 [ 27.603706] ? task_participate_group_stop+0x1ce/0x230 [ 27.604120] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 27.604570] do_invalid_op+0x1b/0x20 [ 27.604917] invalid_op+0x18/0x20 [ 27.605237] RIP: 0010:task_participate_group_stop+0x1ce/0x230 [ 27.605775] RSP: 0018:ffff88003eba77f0 EFLAGS: 00010097 [ 27.606335] RAX: ffff88003eb98040 RBX: ffff88003eb98040 RCX: ffff88003eb9b2c0 [ 27.606997] RDX: 0000000000000000 RSI: 0000000000060013 RDI: ffff88003eb984d0 [ 27.607639] RBP: ffff88003eba7808 R08: ffff88003eba7180 R09: ffff88003eba7178 [ 27.608141] R10: ffff88003eba70f0 R11: 1ffff10007d7329b R12: ffff88006da96040 [ 27.608796] R13: 0000000000000000 R14: dffffc0000000000 R15: ffff88003eb985c8 [ 27.609477] ? do_signal_stop+0x486/0x900 [ 27.609863] do_signal_stop+0x217/0x900 [ 27.610199] ? ptrace_do_notify+0x310/0x310 [ 27.610520] ? __lock_is_held+0xbc/0x140 [ 27.610871] get_signal+0x61c/0x17e0 [ 27.611258] ? ptrace_notify+0x130/0x130 [ 27.611551] ? lock_downgrade+0x990/0x990 [ 27.611848] ? find_held_lock+0x39/0x1d0 [ 27.612214] ? lock_downgrade+0x990/0x990 [ 27.612604] do_signal+0x94/0x1ee0 [ 27.612936] ? __might_fault+0xe0/0x1d0 [ 27.613315] ? setup_sigcontext+0x7d0/0x7d0 [ 27.613801] ? __might_sleep+0x95/0x190 [ 27.614183] ? kasan_check_read+0x11/0x20 [ 27.614568] ? _copy_to_user+0xa2/0xc0 [ 27.614931] ? poll_select_copy_remaining+0x38f/0x620 [ 27.615412] ? exit_to_usermode_loop+0x98/0x300 [ 27.615850] exit_to_usermode_loop+0x224/0x300 [ 27.616272] ? poll_select_set_timeout+0x12f/0x210 [ 27.616730] ? trace_event_raw_event_sys_exit+0x260/0x260 [ 27.617123] ? kasan_check_write+0x14/0x20 [ 27.617426] syscall_return_slowpath+0x42f/0x500 [ 27.617833] ? prepare_exit_to_usermode+0x2c0/0x2c0 [ 27.618304] ? entry_SYSCALL_64_fastpath+0x91/0xbe [ 27.618756] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 27.619218] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 27.619661] entry_SYSCALL_64_fastpath+0xbc/0xbe [ 27.620101] RIP: 0033:0x7fe148682dd3 [ 27.620441] RSP: 002b:00007ffc3f0c7168 EFLAGS: 00000246 ORIG_RAX: 0000000000000017 [ 27.621585] RAX: fffffffffffffdfe RBX: 00007ffc3f0c7310 RCX: 00007fe148682dd3 [ 27.622269] RDX: 0000000000000000 RSI: 00007ffc3f0c74c0 RDI: 000000000000000b [ 27.622974] RBP: 00007ffc3f0c74c0 R08: 00007ffc3f0c7540 R09: 0000000000000001 [ 27.623707] R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff [ 27.624198] R13: 00007ffc3f0c78a0 R14: 0000000000000000 R15: 0000000000000000 [ 27.624861] Dumping ftrace buffer: [ 27.625238] (ftrace buffer empty) [ 27.625582] Kernel Offset: disabled [ 27.625925] Rebooting in 86400 seconds..