audit: type=1400 audit(1556004341.361:2370): avc: denied { read } for pid=15608 comm="syz-executor.4" scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tclass=netlink_generic_socket permissive=1 ------------[ cut here ]------------ WARNING: CPU: 1 PID: 15645 at mm/gup.c:388 check_vma_flags mm/gup.c:388 [inline]() WARNING: CPU: 1 PID: 15645 at mm/gup.c:388 __get_user_pages+0xae7/0xfd0 mm/gup.c:502() Kernel panic - not syncing: panic_on_warn set ... CPU: 1 PID: 15645 Comm: syz-executor.1 Not tainted 4.4.174+ #17 0000000000000000 36da96164a43d172 ffff8801c114f8b8 ffffffff81aad1a1 0000000000000000 ffffffff82835ee0 ffffffff82892ea0 0000000000000184 ffffffff8142cb27 ffff8801c114f998 ffffffff813a48c2 0000000041b58ab3 Call Trace: [] __dump_stack lib/dump_stack.c:15 [inline] [] dump_stack+0xc1/0x120 lib/dump_stack.c:51 [] panic+0x1b9/0x37b kernel/panic.c:112 [] warn_slowpath_common kernel/panic.c:455 [inline] [] warn_slowpath_common.cold+0x20/0x20 kernel/panic.c:435 [] warn_slowpath_null+0x2a/0x30 kernel/panic.c:492 [] check_vma_flags mm/gup.c:388 [inline] [] __get_user_pages+0xae7/0xfd0 mm/gup.c:502 [] __get_user_pages_locked mm/gup.c:654 [inline] [] get_user_pages+0x6d/0x90 mm/gup.c:864 [] __access_remote_vm+0x1e3/0x3c0 mm/memory.c:3727 [] access_process_vm+0x66/0x90 mm/memory.c:3809 [] compat_ptrace_request+0x322/0x430 kernel/ptrace.c:1171 [] ia32_arch_ptrace arch/x86/kernel/ptrace.c:1184 [inline] [] compat_arch_ptrace+0x7f/0x610 arch/x86/kernel/ptrace.c:1288 [] C_SYSC_ptrace kernel/ptrace.c:1260 [inline] [] compat_SyS_ptrace+0x109/0x180 kernel/ptrace.c:1229 [] do_syscall_32_irqs_on arch/x86/entry/common.c:330 [inline] [] do_fast_syscall_32+0x32d/0xa90 arch/x86/entry/common.c:397 [] sysenter_flags_fixed+0xd/0x1a Kernel Offset: disabled Rebooting in 86400 seconds..