On Tue, Sep 26, 2017 at 10:15:36AM +0800, kernel test robot wrote: > [ 7.286014] init[1] bad frame in 32bit sigreturn frame:00000000fff5eb2c ip:f7f369b5 sp:fff5f08c orax:ffffffffffffffff in libuClibc-0.9.33.2.so[f7f2c000+4f000] > [ 7.288482] Kernel panic - not syncing: Attempted to kill init! exitcode=0x0000000b > [ 7.288482] > [ 7.289898] CPU: 0 PID: 1 Comm: init Not tainted 4.14.0-rc1-00021-g14e6330 #38 > [ 7.290988] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.9.3-20161025_171302-gandalf 04/01/2014 > [ 7.292562] Call Trace: > [ 7.292960] dump_stack+0x61/0x7e > [ 7.293485] panic+0xd3/0x20f > [ 7.293967] do_exit+0x4f2/0x983 > [ 7.294440] do_group_exit+0x45/0xb0 > [ 7.294966] get_signal+0x4b8/0x4e4 > [ 7.295483] do_signal+0x23/0x5bc > [ 7.295964] ? force_sig_info+0xc6/0xd5 > [ 7.296521] ? force_sig+0x11/0x13 > [ 7.297027] ? signal_fault+0xb8/0xc1 > [ 7.297557] exit_to_usermode_loop+0x3a/0x72 > [ 7.298178] do_int80_syscall_32+0xe9/0xfe > [ 7.298784] entry_INT80_compat+0x2a/0x40 > [ 7.299374] RIP: 0023:0xf7f369b5 > [ 7.299848] RSP: 002b:00000000fff5f08c EFLAGS: 00000246 > [ 7.300587] RAX: 0000000000000000 RBX: 0000000000000004 RCX: 00000000f7fb670c > [ 7.301609] RDX: 000000000000000a RSI: 0000000000000f9f RDI: 0000000000000fa0 > [ 7.302624] RBP: 00000000fff5f0f8 R08: 0000000000000000 R09: 0000000000000000 > [ 7.303631] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 > [ 7.304666] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 > [ 7.305677] Kernel Offset: 0x7000000 from 0xffffffff81000000 (relocation range: 0xffffffff80000000-0xffffffffbfffffff) > > Elapsed time: 10 Thanks for testing! This should already be fixed by the version of the patch in tip/master (commit 814fb7bb7db543); there was a missing check for 'state_size'. Eric