Oops: general protection fault, probably for non-canonical address 0xdffffc0000000000: 0000 [#1] SMP KASAN PTI KASAN: null-ptr-deref in range [0x0000000000000000-0x0000000000000007] CPU: 0 UID: 0 PID: 4733 Comm: syz.1.7505 Not tainted syzkaller #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/15/2026 RIP: 0010:anon_vma_lock_read mm/internal.h:315 [inline] RIP: 0010:validate_mm+0x1c9/0x4c0 mm/vma.c:707 Code: 0d f3 99 ff 4d 39 e7 0f 85 3c 01 00 00 e8 2f f0 99 ff 4c 8b 7c 24 10 48 89 df e8 12 03 00 00 84 c0 74 72 4d 89 fc 49 c1 ec 03 <43> 80 3c 34 00 74 08 4c 89 ff e8 98 cd 10 00 49 8b 3f 48 83 c7 08 RSP: 0018:ffffc90003bc7820 EFLAGS: 00010246 RAX: 1ffff110043d2501 RBX: ffff888021e92a00 RCX: ffff8880284bbe80 RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000 RBP: ffffc90003bc7950 R08: ffff888021e92a83 R09: 1ffff110043d2550 R10: dffffc0000000000 R11: ffffed10043d2551 R12: 0000000000000000 R13: 000000000000001c R14: dffffc0000000000 R15: 0000000000000000 FS: 00007feb7dc866c0(0000) GS:ffff88812361f000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007feb7dc44d58 CR3: 000000004eadc000 CR4: 00000000003526f0 Call Trace: vms_complete_munmap_vmas+0x93b/0xc10 mm/vma.c:1437 do_vmi_align_munmap+0x3b7/0x4b0 mm/vma.c:1677 do_vmi_munmap+0x252/0x2d0 mm/vma.c:1725 __vm_munmap+0x240/0x420 mm/vma.c:3562 __do_sys_munmap mm/mmap.c:1094 [inline] __se_sys_munmap mm/mmap.c:1091 [inline] __x64_sys_munmap+0x60/0x70 mm/mmap.c:1091 do_syscall_x64 arch/x86/entry/syscall_64.c:61 [inline] do_syscall_64+0x166/0x520 arch/x86/entry/syscall_64.c:84 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7feb7cd9f387 Code: 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 b8 0b 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007feb7dc84d18 EFLAGS: 00000206 ORIG_RAX: 000000000000000b RAX: ffffffffffffffda RBX: 00007feb6c000000 RCX: 00007feb7cd9f387 RDX: 0000000000000000 RSI: 0000000004000000 RDI: 00007feb70000000 RBP: 0000000000021000 R08: 00000000ffffffff R09: 0000000000000000 R10: 0000000000000022 R11: 0000000000000206 R12: 0000000004000000 R13: 0000000000001000 R14: 00007feb70000000 R15: 0000000000000000 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:anon_vma_lock_read mm/internal.h:315 [inline] RIP: 0010:validate_mm+0x1c9/0x4c0 mm/vma.c:707 Code: 0d f3 99 ff 4d 39 e7 0f 85 3c 01 00 00 e8 2f f0 99 ff 4c 8b 7c 24 10 48 89 df e8 12 03 00 00 84 c0 74 72 4d 89 fc 49 c1 ec 03 <43> 80 3c 34 00 74 08 4c 89 ff e8 98 cd 10 00 49 8b 3f 48 83 c7 08 RSP: 0018:ffffc90003bc7820 EFLAGS: 00010246 RAX: 1ffff110043d2501 RBX: ffff888021e92a00 RCX: ffff8880284bbe80 RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000 RBP: ffffc90003bc7950 R08: ffff888021e92a83 R09: 1ffff110043d2550 R10: dffffc0000000000 R11: ffffed10043d2551 R12: 0000000000000000 R13: 000000000000001c R14: dffffc0000000000 R15: 0000000000000000 FS: 00007feb7dc866c0(0000) GS:ffff88812361f000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f92801f62f8 CR3: 000000004eadc000 CR4: 00000000003526f0 ---------------- Code disassembly (best guess): 0: 0d f3 99 ff 4d or $0x4dff99f3,%eax 5: 39 e7 cmp %esp,%edi 7: 0f 85 3c 01 00 00 jne 0x149 d: e8 2f f0 99 ff call 0xff99f041 12: 4c 8b 7c 24 10 mov 0x10(%rsp),%r15 17: 48 89 df mov %rbx,%rdi 1a: e8 12 03 00 00 call 0x331 1f: 84 c0 test %al,%al 21: 74 72 je 0x95 23: 4d 89 fc mov %r15,%r12 26: 49 c1 ec 03 shr $0x3,%r12 * 2a: 43 80 3c 34 00 cmpb $0x0,(%r12,%r14,1) <-- trapping instruction 2f: 74 08 je 0x39 31: 4c 89 ff mov %r15,%rdi 34: e8 98 cd 10 00 call 0x10cdd1 39: 49 8b 3f mov (%r15),%rdi 3c: 48 83 c7 08 add $0x8,%rdi