capability: warning: `syz-executor6' uses 32-bit capabilities (legacy support in use) ------------[ cut here ]------------ WARNING: CPU: 1 PID: 7892 at ./arch/x86/include/asm/fpu/internal.h:534 __fpregs_activate arch/x86/include/asm/fpu/internal.h:534 [inline] WARNING: CPU: 1 PID: 7892 at ./arch/x86/include/asm/fpu/internal.h:534 fpregs_activate arch/x86/include/asm/fpu/internal.h:566 [inline] WARNING: CPU: 1 PID: 7892 at ./arch/x86/include/asm/fpu/internal.h:534 fpu__restore+0x6aa/0x8b0 arch/x86/kernel/fpu/core.c:461 Kernel panic - not syncing: panic_on_warn set ... CPU: 1 PID: 7892 Comm: syz-executor5 Not tainted 4.9.105-gd7e64f8 #43 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 ffff8801cbb9faa8 ffffffff81eb41a9 ffffffff83c48b40 00000000ffffffff 0000000000000000 0000000000000001 0000000000000216 ffff8801cbb9fb68 ffffffff81421e15 0000000041b58ab3 ffffffff843b9990 ffffffff81421c56 Call Trace: [] __dump_stack lib/dump_stack.c:15 [inline] [] dump_stack+0xc1/0x128 lib/dump_stack.c:51 [] panic+0x1bf/0x3bc kernel/panic.c:179 [] __warn.cold.9+0xc1/0x17f kernel/panic.c:542 [] warn_slowpath_null+0x2c/0x40 kernel/panic.c:585 [] __fpregs_activate arch/x86/include/asm/fpu/internal.h:534 [inline] [] fpregs_activate arch/x86/include/asm/fpu/internal.h:566 [inline] [] fpu__restore+0x6aa/0x8b0 arch/x86/kernel/fpu/core.c:461 [] __fpu__restore_sig+0x4ee/0x1290 arch/x86/kernel/fpu/signal.c:349 [] fpu__restore_sig+0x87/0xe0 arch/x86/kernel/fpu/signal.c:388 [] ia32_restore_sigcontext+0x3cd/0x490 arch/x86/ia32/ia32_signal.c:108 [] sys32_rt_sigreturn+0x1d5/0x290 arch/x86/ia32/ia32_signal.c:156 [] do_syscall_32_irqs_on arch/x86/entry/common.c:325 [inline] [] do_fast_syscall_32+0x2f7/0x870 arch/x86/entry/common.c:387 [] entry_SYSENTER_compat+0x90/0xa2 arch/x86/entry/entry_64_compat.S:137 Dumping ftrace buffer: (ftrace buffer empty) Kernel Offset: disabled Rebooting in 86400 seconds..