general protection fault, probably for non-canonical address 0xdffffc00000000fa: 0000 [#1] PREEMPT SMP KASAN KASAN: null-ptr-deref in range [0x00000000000007d0-0x00000000000007d7] CPU: 0 PID: 24576 Comm: syz-executor.1 Not tainted 6.2.0-syzkaller-13277-g2eb29d59ddf0 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/16/2023 RIP: 0010:mm_has_notifiers include/linux/mmu_notifier.h:282 [inline] RIP: 0010:mmu_notifier_invalidate_range_start include/linux/mmu_notifier.h:456 [inline] RIP: 0010:unmap_vmas+0x1c9/0x380 mm/memory.c:1690 Code: 8c 41 b8 01 00 00 00 e8 25 14 a4 ff 4c 8b 6c 24 70 58 48 b8 00 00 00 00 00 fc ff df 49 8d bd d0 07 00 00 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 85 01 00 00 49 83 bd d0 07 00 00 00 0f 85 3b 01 RSP: 0018:ffffc90015e87ac8 EFLAGS: 00010216 RAX: dffffc0000000000 RBX: ffffffffffffffff RCX: ffffffff8165fc5c RDX: 00000000000000fa RSI: 0000000000000000 RDI: 00000000000007d0 RBP: 0000000000000000 R08: 0000000000000000 R09: ffffffff914deb97 R10: fffffbfff229bd72 R11: 0000000000000000 R12: 0000000000000000 R13: 0000000000000000 R14: dffffc0000000000 R15: ffff88808765b7e0 FS: 0000000000000000(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007faa78c27ec0 CR3: 0000000079aa1000 CR4: 0000000000350ef0 Call Trace: exit_mmap+0x190/0x7d0 mm/mmap.c:3036 __mmput+0x128/0x4c0 kernel/fork.c:1209 mmput+0x60/0x70 kernel/fork.c:1231 exit_mm kernel/exit.c:563 [inline] do_exit+0x9d7/0x2a40 kernel/exit.c:856 do_group_exit+0xd4/0x2a0 kernel/exit.c:1019 __do_sys_exit_group kernel/exit.c:1030 [inline] __se_sys_exit_group kernel/exit.c:1028 [inline] __x64_sys_exit_group+0x3e/0x50 kernel/exit.c:1028 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x39/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7faa78c8c0f9 Code: Unable to access opcode bytes at 0x7faa78c8c0cf. RSP: 002b:00007ffd893dc638 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007faa78c8c0f9 RDX: 00007faa78c89e2b RSI: 0000000000000000 RDI: 000000000000000b RBP: 000000000000000b R08: 0000555556c93400 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 R13: 0000000000000000 R14: 0000000000000001 R15: 00007ffd893dcd00 Modules linked in: ---------------- Code disassembly (best guess): 0: 8c 41 b8 mov %es,-0x48(%rcx) 3: 01 00 add %eax,(%rax) 5: 00 00 add %al,(%rax) 7: e8 25 14 a4 ff callq 0xffa41431 c: 4c 8b 6c 24 70 mov 0x70(%rsp),%r13 11: 58 pop %rax 12: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax 19: fc ff df 1c: 49 8d bd d0 07 00 00 lea 0x7d0(%r13),%rdi 23: 48 89 fa mov %rdi,%rdx 26: 48 c1 ea 03 shr $0x3,%rdx * 2a: 80 3c 02 00 cmpb $0x0,(%rdx,%rax,1) <-- trapping instruction 2e: 0f 85 85 01 00 00 jne 0x1b9 34: 49 83 bd d0 07 00 00 cmpq $0x0,0x7d0(%r13) 3b: 00 3c: 0f .byte 0xf 3d: 85 3b test %edi,(%rbx) 3f: 01 .byte 0x1