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: 8868 Comm: syz.2.2970 Tainted: G W 5.15.185-syzkaller-00339-ge678c93d43cc #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 RIP: 0010:____rb_erase_color lib/rbtree.c:242 [inline] RIP: 0010:__rb_erase_color+0x6f/0xaf0 lib/rbtree.c:413 Code: 4c 89 ef e8 93 ea 3a ff 4d 8b 7d 00 4c 39 fb 4c 89 75 d0 0f 84 4d 01 00 00 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 62 ea 3a ff 41 f6 07 01 4c 89 6d RSP: 0018:ffffc900012bf6c0 EFLAGS: 00010246 RAX: dffffc0000000000 RBX: ffff888125cf2058 RCX: 1ffff110239bb0a0 RDX: ffffffff819ae9b0 RSI: 1ffff110226be069 RDI: ffff88811cdd84f8 RBP: ffffc900012bf720 R08: dffffc0000000000 R09: ffffed10226be06d R10: ffffed10226be06d R11: 1ffff110226be06c R12: 0000000000000000 R13: ffff88811cdd8500 R14: ffff88811cdd84f8 R15: 0000000000000000 FS: 0000000000000000(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f3f7f5846c0 CR3: 00000001331ef000 CR4: 00000000003506b0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff0ff0 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+0xadf/0xb00 mm/interval_tree.c:23 __remove_shared_vm_struct mm/mmap.c:159 [inline] unlink_file_vma+0xd7/0xf0 mm/mmap.c:174 free_pgtables+0x139/0x280 mm/memory.c:490 exit_mmap+0x407/0x860 mm/mmap.c:3235 __mmput+0x93/0x320 kernel/fork.c:1180 mmput+0x50/0x150 kernel/fork.c:1203 exit_mm kernel/exit.c:554 [inline] do_exit+0x9ca/0x27a0 kernel/exit.c:867 do_group_exit+0x141/0x310 kernel/exit.c:1002 get_signal+0x66a/0x1480 kernel/signal.c:2907 arch_do_signal_or_restart+0xc1/0x10f0 arch/x86/kernel/signal.c:867 handle_signal_work kernel/entry/common.c:154 [inline] exit_to_user_mode_loop+0xa7/0xe0 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+0x1a/0x30 kernel/entry/common.c:307 do_syscall_64+0x58/0xa0 arch/x86/entry/common.c:86 entry_SYSCALL_64_after_hwframe+0x66/0xd0 RIP: 0033:0x7fe7dc1631e5 Code: Unable to access opcode bytes at RIP 0x7fe7dc1631bb. RSP: 002b:00007fe7da798f80 EFLAGS: 00000293 ORIG_RAX: 00000000000000e6 RAX: fffffffffffffdfc RBX: 00007fe7dc357fa0 RCX: 00007fe7dc1631e5 RDX: 00007fe7da798fc0 RSI: 0000000000000000 RDI: 0000000000000000 RBP: 00007fe7dc1b2b39 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000000 R13: 0000000000000000 R14: 00007fe7dc357fa0 R15: 00007ffcdc58ffd8 Modules linked in: ---[ end trace aff9c55e52d04f53 ]--- RIP: 0010:____rb_erase_color lib/rbtree.c:242 [inline] RIP: 0010:__rb_erase_color+0x6f/0xaf0 lib/rbtree.c:413 Code: 4c 89 ef e8 93 ea 3a ff 4d 8b 7d 00 4c 39 fb 4c 89 75 d0 0f 84 4d 01 00 00 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 62 ea 3a ff 41 f6 07 01 4c 89 6d RSP: 0018:ffffc900012bf6c0 EFLAGS: 00010246 RAX: dffffc0000000000 RBX: ffff888125cf2058 RCX: 1ffff110239bb0a0 RDX: ffffffff819ae9b0 RSI: 1ffff110226be069 RDI: ffff88811cdd84f8 RBP: ffffc900012bf720 R08: dffffc0000000000 R09: ffffed10226be06d R10: ffffed10226be06d R11: 1ffff110226be06c R12: 0000000000000000 R13: ffff88811cdd8500 R14: ffff88811cdd84f8 R15: 0000000000000000 FS: 0000000000000000(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f3c2e676f40 CR3: 000000010d280000 CR4: 00000000003506a0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600 ---------------- Code disassembly (best guess): 0: 4c 89 ef mov %r13,%rdi 3: e8 93 ea 3a ff call 0xff3aea9b 8: 4d 8b 7d 00 mov 0x0(%r13),%r15 c: 4c 39 fb cmp %r15,%rbx f: 4c 89 75 d0 mov %r14,-0x30(%rbp) 13: 0f 84 4d 01 00 00 je 0x166 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 62 ea 3a ff call 0xff3aea9b 39: 41 f6 07 01 testb $0x1,(%r15) 3d: 4c rex.WR 3e: 89 .byte 0x89 3f: 6d insl (%dx),%es:(%rdi)