kasan: CONFIG_KASAN_INLINE enabled kasan: GPF could be caused by NULL-ptr deref or user memory access general protection fault: 0000 [#1] SMP KASAN sctp: [Deprecated]: syz-executor0 (pid 30549) Use of int in maxseg socket option. Use struct sctp_assoc_value instead FAULT_FLAG_ALLOW_RETRY missing 30 CPU: 1 PID: 30536 Comm: syz-executor7 Not tainted 4.15.0-rc4+ #137 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:17 [inline] dump_stack+0x194/0x257 lib/dump_stack.c:53 handle_userfault+0x12fa/0x24c0 fs/userfaultfd.c:427 do_anonymous_page mm/memory.c:3121 [inline] handle_pte_fault mm/memory.c:3935 [inline] __handle_mm_fault+0x32a3/0x3ce0 mm/memory.c:4061 handle_mm_fault+0x334/0x8d0 mm/memory.c:4098 __do_page_fault+0x5c9/0xc90 arch/x86/mm/fault.c:1429 do_page_fault+0xee/0x720 arch/x86/mm/fault.c:1504 page_fault+0x22/0x30 arch/x86/entry/entry_64.S:1094 RIP: 0010:fault_in_pages_readable include/linux/pagemap.h:601 [inline] RIP: 0010:iov_iter_fault_in_readable+0x1a7/0x410 lib/iov_iter.c:421 RSP: 0018:ffff8801c295f790 EFLAGS: 00010246 RAX: 0000000000010000 RBX: 0000000020011fd2 RCX: ffffffff825032e1 RDX: 00000000000000cf RSI: ffffc900029cd000 RDI: ffff8801c295fb90 RBP: ffff8801c295f870 R08: 1ffff100398b457a R09: 0000000000000000 R10: ffff8801c295f6c0 R11: 0000000000000000 R12: 1ffff1003852bef5 R13: ffff8801c295f848 R14: 0000000000000000 R15: ffff8801c295fb88 generic_perform_write+0x200/0x600 mm/filemap.c:3129 __generic_file_write_iter+0x366/0x5b0 mm/filemap.c:3264 generic_file_write_iter+0x399/0x790 mm/filemap.c:3292 call_write_iter include/linux/fs.h:1772 [inline] new_sync_write fs/read_write.c:469 [inline] __vfs_write+0x684/0x970 fs/read_write.c:482 vfs_write+0x189/0x510 fs/read_write.c:544 SYSC_write fs/read_write.c:589 [inline] SyS_write+0xef/0x220 fs/read_write.c:581 do_syscall_32_irqs_on arch/x86/entry/common.c:327 [inline] do_fast_syscall_32+0x3ee/0xf9d arch/x86/entry/common.c:389 entry_SYSENTER_compat+0x51/0x60 arch/x86/entry/entry_64_compat.S:125 RIP: 0023:0xf7fa1c79 RSP: 002b:00000000f779d08c EFLAGS: 00000296 ORIG_RAX: 0000000000000004 RAX: ffffffffffffffda RBX: 0000000000000014 RCX: 0000000020011fd2 RDX: 0000000000000030 RSI: 0000000000000000 RDI: 0000000000000000 RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 sctp: [Deprecated]: syz-executor0 (pid 30549) Use of int in maxseg socket option. Use struct sctp_assoc_value instead encrypted_key: insufficient parameters specified encrypted_key: insufficient parameters specified Dumping ftrace buffer: (ftrace buffer empty) Modules linked in: CPU: 0 PID: 30561 Comm: syz-executor1 Not tainted 4.15.0-rc4+ #137 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:native_write_cr4+0x4/0x10 arch/x86/include/asm/special_insns.h:76 RSP: 0018:ffff8801d5b46f98 EFLAGS: 00010093 RAX: ffff8801beb32280 RBX: 00000000001606f0 RCX: ffffffff811a2a92 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 00000000001606f0 RBP: ffff8801d5b46f98 R08: 1ffff1003ab68d4f R09: 0000000000000004 R10: ffff8801d5b46f08 R11: 0000000000000004 R12: 0000000000000093 R13: ffff8801beb32280 R14: ffff8801db414850 R15: ffff8801db414850 FS: 0000000000000000(0000) GS:ffff8801db400000(0000) knlGS:0000000000000000 CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033 CR2: 0000000020e79000 CR3: 0000000005e22002 CR4: 00000000001626f0 Call Trace: __write_cr4 arch/x86/include/asm/paravirt.h:76 [inline] __cr4_set arch/x86/include/asm/tlbflush.h:180 [inline] cr4_clear_bits arch/x86/include/asm/tlbflush.h:203 [inline] kvm_cpu_vmxoff arch/x86/kvm/vmx.c:3582 [inline] hardware_disable+0x34a/0x4b0 arch/x86/kvm/vmx.c:3588 kvm_arch_hardware_disable+0x35/0xd0 arch/x86/kvm/x86.c:7982 hardware_disable_nolock+0x30/0x40 arch/x86/kvm/../../../virt/kvm/kvm_main.c:3310 on_each_cpu+0xca/0x1b0 kernel/smp.c:604 hardware_disable_all_nolock+0x3e/0x50 arch/x86/kvm/../../../virt/kvm/kvm_main.c:3328 hardware_disable_all arch/x86/kvm/../../../virt/kvm/kvm_main.c:3334 [inline] kvm_destroy_vm arch/x86/kvm/../../../virt/kvm/kvm_main.c:742 [inline] kvm_put_kvm+0x956/0xdf0 arch/x86/kvm/../../../virt/kvm/kvm_main.c:755 kvm_vm_release+0x42/0x50 arch/x86/kvm/../../../virt/kvm/kvm_main.c:766 __fput+0x327/0x7e0 fs/file_table.c:210 ____fput+0x15/0x20 fs/file_table.c:244 task_work_run+0x199/0x270 kernel/task_work.c:113 exit_task_work include/linux/task_work.h:22 [inline] do_exit+0x9bb/0x1ad0 kernel/exit.c:865 do_group_exit+0x149/0x400 kernel/exit.c:968 get_signal+0x73f/0x16c0 kernel/signal.c:2335 do_signal+0x94/0x1ee0 arch/x86/kernel/signal.c:809 exit_to_usermode_loop+0x214/0x310 arch/x86/entry/common.c:158 prepare_exit_to_usermode arch/x86/entry/common.c:195 [inline] syscall_return_slowpath arch/x86/entry/common.c:264 [inline] do_syscall_32_irqs_on arch/x86/entry/common.c:333 [inline] do_fast_syscall_32+0xbfd/0xf9d arch/x86/entry/common.c:389 entry_SYSENTER_compat+0x51/0x60 arch/x86/entry/entry_64_compat.S:125 RIP: 0023:0xf7fd0c79 RSP: 002b:00000000f778910c EFLAGS: 00000296 ORIG_RAX: 00000000000000f0 RAX: fffffffffffffe00 RBX: 000000000813b014 RCX: 0000000000000000 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000002 RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 Code: 0f 1f 80 00 00 00 00 55 48 89 e5 0f 20 d8 5d c3 0f 1f 80 00 00 00 00 55 48 89 e5 0f 22 df 5d c3 0f 1f 80 00 00 00 00 55 48 89 e5 <0f> 22 e7 5d c3 0f 1f 80 00 00 00 00 55 48 89 e5 44 0f 20 c0 5d RIP: native_write_cr4+0x4/0x10 arch/x86/include/asm/special_insns.h:76 RSP: ffff8801d5b46f98 ---[ end trace ae5c8f4cebccd41c ]---