------------[ cut here ]------------ WARNING: CPU: 0 PID: 3063 at mm/gup.c:388 check_vma_flags mm/gup.c:388 [inline]() WARNING: CPU: 0 PID: 3063 at mm/gup.c:388 __get_user_pages+0xae7/0xfd0 mm/gup.c:502() Kernel panic - not syncing: panic_on_warn set ... CPU: 0 PID: 3063 Comm: syz-executor.4 Not tainted 4.4.174+ #4 0000000000000000 bb64fb1b486db9cd ffff8800bada7890 ffffffff81aad1a1 0000000000000000 ffffffff82835ee0 ffffffff82892ea0 0000000000000184 ffffffff8142cb27 ffff8800bada7970 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_remote_vm+0x36/0x50 mm/memory.c:3787 [] mem_rw.isra.0+0x178/0x320 fs/proc/base.c:898 [] mem_write+0x55/0x70 fs/proc/base.c:932 [] __vfs_write+0x116/0x3d0 fs/read_write.c:491 [] vfs_write+0x182/0x4e0 fs/read_write.c:540 [] SYSC_write fs/read_write.c:587 [inline] [] SyS_write+0xdc/0x1c0 fs/read_write.c:579 [] entry_SYSCALL_64_fastpath+0x1e/0x9a Kernel Offset: disabled Rebooting in 86400 seconds..