general protection fault, probably for non-canonical address 0xdffffc0000000000: 0000 [#1] PREEMPT SMP KASAN KASAN: null-ptr-deref in range [0x0000000000000000-0x0000000000000007] CPU: 0 PID: 291 Comm: syz-executor Not tainted 5.15.170-syzkaller-00174-g431fb5556be3 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 RIP: 0010:____rb_erase_color lib/rbtree.c:354 [inline] RIP: 0010:__rb_erase_color+0x20b/0xa60 lib/rbtree.c:413 Code: 49 89 de 49 c1 ee 03 43 80 3c 26 00 74 08 48 89 df e8 69 b9 2a ff 4c 8b 3b 4d 89 fc 49 c1 ec 03 48 b8 00 00 00 00 00 fc ff df <41> 80 3c 04 00 74 08 4c 89 ff e8 46 b9 2a ff 41 f6 07 01 48 89 5d RSP: 0018:ffffc90000a579e0 EFLAGS: 00010246 RAX: dffffc0000000000 RBX: ffff88811dc3a758 RCX: ffff88811a88e2c0 RDX: ffffffff81a57dc0 RSI: ffff8881092ed518 RDI: ffff88811dc3a748 RBP: ffffc90000a57a40 R08: ffffffff81a55e80 R09: ffffed102125daa7 R10: 0000000000000000 R11: dffffc0000000001 R12: 0000000000000000 R13: ffff88811dc3a748 R14: 1ffff11023b874eb R15: 0000000000000000 FS: 0000000000000000(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00000000200012c0 CR3: 000000011dce9000 CR4: 00000000003506b0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff0ff1 DR7: 0000000000000600 Call Trace: rb_erase_augmented include/linux/rbtree_augmented.h:305 [inline] rb_erase_augmented_cached include/linux/rbtree_augmented.h:314 [inline] vma_interval_tree_remove+0xb82/0xba0 mm/interval_tree.c:23 __remove_shared_vm_struct mm/mmap.c:159 [inline] unlink_file_vma+0xd9/0xf0 mm/mmap.c:174 free_pgtables+0x13f/0x280 mm/memory.c:490 exit_mmap+0x405/0x940 mm/mmap.c:3217 __mmput+0x95/0x310 kernel/fork.c:1179 mmput+0x5b/0x170 kernel/fork.c:1202 exit_mm kernel/exit.c:554 [inline] do_exit+0xb9c/0x2ca0 kernel/exit.c:867 do_group_exit+0x141/0x310 kernel/exit.c:1002 __do_sys_exit_group kernel/exit.c:1013 [inline] __se_sys_exit_group kernel/exit.c:1011 [inline] __x64_sys_exit_group+0x3f/0x40 kernel/exit.c:1011 x64_sys_call+0x610/0x9a0 arch/x86/include/generated/asm/syscalls_64.h:232 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x66/0xd0 RIP: 0033:0x7f3bd3b71ed9 Code: Unable to access opcode bytes at RIP 0x7f3bd3b71eaf. RSP: 002b:00007ffd47b4ad88 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f3bd3b71ed9 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000043 RBP: 00007f3bd3bcfad8 R08: 00007ffd47b48b27 R09: 0000000000026cd9 R10: 0000000000000009 R11: 0000000000000246 R12: 0000000000000001 R13: 0000000000026cd9 R14: 0000000000000000 R15: 00007ffd47b4b610 Modules linked in: ---[ end trace 01d66ccbd15acf0c ]--- RIP: 0010:____rb_erase_color lib/rbtree.c:354 [inline] RIP: 0010:__rb_erase_color+0x20b/0xa60 lib/rbtree.c:413 Code: 49 89 de 49 c1 ee 03 43 80 3c 26 00 74 08 48 89 df e8 69 b9 2a ff 4c 8b 3b 4d 89 fc 49 c1 ec 03 48 b8 00 00 00 00 00 fc ff df <41> 80 3c 04 00 74 08 4c 89 ff e8 46 b9 2a ff 41 f6 07 01 48 89 5d RSP: 0018:ffffc90000a579e0 EFLAGS: 00010246 RAX: dffffc0000000000 RBX: ffff88811dc3a758 RCX: ffff88811a88e2c0 RDX: ffffffff81a57dc0 RSI: ffff8881092ed518 RDI: ffff88811dc3a748 RBP: ffffc90000a57a40 R08: ffffffff81a55e80 R09: ffffed102125daa7 R10: 0000000000000000 R11: dffffc0000000001 R12: 0000000000000000 R13: ffff88811dc3a748 R14: 1ffff11023b874eb R15: 0000000000000000 FS: 0000000000000000(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000100000000 CR3: 000000010cd5b000 CR4: 00000000003506a0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000600 ---------------- Code disassembly (best guess): 0: 49 89 de mov %rbx,%r14 3: 49 c1 ee 03 shr $0x3,%r14 7: 43 80 3c 26 00 cmpb $0x0,(%r14,%r12,1) c: 74 08 je 0x16 e: 48 89 df mov %rbx,%rdi 11: e8 69 b9 2a ff call 0xff2ab97f 16: 4c 8b 3b mov (%rbx),%r15 19: 4d 89 fc mov %r15,%r12 1c: 49 c1 ec 03 shr $0x3,%r12 20: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax 27: fc ff df * 2a: 41 80 3c 04 00 cmpb $0x0,(%r12,%rax,1) <-- trapping instruction 2f: 74 08 je 0x39 31: 4c 89 ff mov %r15,%rdi 34: e8 46 b9 2a ff call 0xff2ab97f 39: 41 f6 07 01 testb $0x1,(%r15) 3d: 48 rex.W 3e: 89 .byte 0x89 3f: 5d pop %rbp