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: 288 Comm: syz-executor Tainted: G W 5.15.160-syzkaller-00026-ge6fb3b0fa87f #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024 RIP: 0010:rb_set_parent_color include/linux/rbtree_augmented.h:165 [inline] RIP: 0010:____rb_erase_color lib/rbtree.c:359 [inline] RIP: 0010:__rb_erase_color+0x2bd/0xa60 lib/rbtree.c:413 Code: 89 ef e8 b6 04 2b ff 48 8b 45 d0 49 89 45 00 49 89 c5 48 89 c3 48 83 cb 01 4c 89 f0 48 c1 e8 03 48 b9 00 00 00 00 00 fc ff df <80> 3c 08 00 74 08 4c 89 f7 e8 85 04 2b ff 49 89 1e 4c 89 eb 48 c1 RSP: 0018:ffffc900009a76a0 EFLAGS: 00010246 RAX: 0000000000000000 RBX: ffff888129dd7ac1 RCX: dffffc0000000000 RDX: ffffffff81a574a0 RSI: ffff88810e354f40 RDI: ffff888129dd7ac0 RBP: ffffc900009a7700 R08: ffffffff81a55560 R09: ffffed1021c6a9ec R10: 0000000000000000 R11: dffffc0000000001 R12: 1ffff11024977dc7 R13: ffff888129dd7ac0 R14: 0000000000000000 R15: ffff888124bbee38 FS: 0000000000000000(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fcb47aa4f98 CR3: 0000000121149000 CR4: 00000000003506b0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 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:487 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:552 [inline] do_exit+0xb9c/0x2ca0 kernel/exit.c:865 do_group_exit+0x141/0x310 kernel/exit.c:1000 get_signal+0x7a3/0x1630 kernel/signal.c:2896 arch_do_signal_or_restart+0xbd/0x1680 arch/x86/kernel/signal.c:867 handle_signal_work kernel/entry/common.c:154 [inline] exit_to_user_mode_loop+0xa0/0xe0 kernel/entry/common.c:178 exit_to_user_mode_prepare+0x5a/0xa0 kernel/entry/common.c:214 __syscall_exit_to_user_mode_work kernel/entry/common.c:296 [inline] syscall_exit_to_user_mode+0x26/0x160 kernel/entry/common.c:307 do_syscall_64+0x47/0xb0 arch/x86/entry/common.c:86 entry_SYSCALL_64_after_hwframe+0x66/0xd0 RIP: 0033:0x7f48d57be113 Code: Unable to access opcode bytes at RIP 0x7f48d57be0e9. RSP: 002b:00007fffa27874a8 EFLAGS: 00000202 ORIG_RAX: 000000000000003d RAX: fffffffffffffe00 RBX: 000000000000011f RCX: 00007f48d57be113 RDX: 0000000040000000 RSI: 00007fffa27874dc RDI: 00000000ffffffff RBP: 00007fffa27874dc R08: 00007fffa27bc080 R09: 00007fffa27bc0b0 R10: 0000000000000000 R11: 0000000000000202 R12: 00005555563d64cb R13: 00005555563d6470 R14: 000000000000f0f6 R15: 00007fffa2787530 Modules linked in: ---[ end trace f58ce8371426a804 ]--- RIP: 0010:rb_set_parent_color include/linux/rbtree_augmented.h:165 [inline] RIP: 0010:____rb_erase_color lib/rbtree.c:359 [inline] RIP: 0010:__rb_erase_color+0x2bd/0xa60 lib/rbtree.c:413 Code: 89 ef e8 b6 04 2b ff 48 8b 45 d0 49 89 45 00 49 89 c5 48 89 c3 48 83 cb 01 4c 89 f0 48 c1 e8 03 48 b9 00 00 00 00 00 fc ff df <80> 3c 08 00 74 08 4c 89 f7 e8 85 04 2b ff 49 89 1e 4c 89 eb 48 c1 RSP: 0018:ffffc900009a76a0 EFLAGS: 00010246 RAX: 0000000000000000 RBX: ffff888129dd7ac1 RCX: dffffc0000000000 RDX: ffffffff81a574a0 RSI: ffff88810e354f40 RDI: ffff888129dd7ac0 RBP: ffffc900009a7700 R08: ffffffff81a55560 R09: ffffed1021c6a9ec R10: 0000000000000000 R11: dffffc0000000001 R12: 1ffff11024977dc7 R13: ffff888129dd7ac0 R14: 0000000000000000 R15: ffff888124bbee38 FS: 0000000000000000(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00005555567514a8 CR3: 0000000121bed000 CR4: 00000000003506a0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 ---------------- Code disassembly (best guess): 0: 89 ef mov %ebp,%edi 2: e8 b6 04 2b ff call 0xff2b04bd 7: 48 8b 45 d0 mov -0x30(%rbp),%rax b: 49 89 45 00 mov %rax,0x0(%r13) f: 49 89 c5 mov %rax,%r13 12: 48 89 c3 mov %rax,%rbx 15: 48 83 cb 01 or $0x1,%rbx 19: 4c 89 f0 mov %r14,%rax 1c: 48 c1 e8 03 shr $0x3,%rax 20: 48 b9 00 00 00 00 00 movabs $0xdffffc0000000000,%rcx 27: fc ff df * 2a: 80 3c 08 00 cmpb $0x0,(%rax,%rcx,1) <-- trapping instruction 2e: 74 08 je 0x38 30: 4c 89 f7 mov %r14,%rdi 33: e8 85 04 2b ff call 0xff2b04bd 38: 49 89 1e mov %rbx,(%r14) 3b: 4c 89 eb mov %r13,%rbx 3e: 48 rex.W 3f: c1 .byte 0xc1