general protection fault, probably for non-canonical address 0xdffffc0000000000: 0000 [#1] PREEMPT SMP KASAN KASAN: null-ptr-deref in range [0x0000000000000000-0x0000000000000007] CPU: 1 PID: 3677 Comm: syz-executor Not tainted 5.15.165-syzkaller-01568-g80dd36dca275 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024 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 d9 df 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 b6 df 2a ff 41 f6 07 01 48 89 5d RSP: 0018:ffffc90000bf76a0 EFLAGS: 00010246 RAX: dffffc0000000000 RBX: ffff888115f539a8 RCX: ffff88811551bb40 RDX: ffffffff81a575f0 RSI: ffff88810e34a658 RDI: ffff888115f53998 RBP: ffffc90000bf7700 R08: ffffffff81a556b0 R09: ffffed1021c694cf R10: 0000000000000000 R11: dffffc0000000001 R12: 0000000000000000 R13: ffff888115f53998 R14: 1ffff11022bea735 R15: 0000000000000000 FS: 0000000000000000(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000000000 CR3: 000000011349b000 CR4: 00000000003506a0 DR0: 0000000000000000 DR1: 0000000020000300 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+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 get_signal+0x7a3/0x1630 kernel/signal.c:2904 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: 0033:0x7fde9af129fd Code: Unable to access opcode bytes at RIP 0x7fde9af129d3. RSP: 002b:00007ffdd64c7708 EFLAGS: 00000246 ORIG_RAX: 0000000000000000 RAX: fffffffffffffe00 RBX: 0000000000000003 RCX: 00007fde9af129fd RDX: 0000000000000028 RSI: 00007ffdd64c7790 RDI: 00000000000000f9 RBP: 00007ffdd64c773c R08: 00000000000002e8 R09: 0079746972756365 R10: 00007fde9b09e120 R11: 0000000000000246 R12: 0000000000000032 R13: 0000000000076a2a R14: 00000000000766c2 R15: 00007ffdd64c7790 Modules linked in: ---[ end trace e61a8ba0fcc4f7be ]--- 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 d9 df 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 b6 df 2a ff 41 f6 07 01 48 89 5d RSP: 0018:ffffc90000bf76a0 EFLAGS: 00010246 RAX: dffffc0000000000 RBX: ffff888115f539a8 RCX: ffff88811551bb40 RDX: ffffffff81a575f0 RSI: ffff88810e34a658 RDI: ffff888115f53998 RBP: ffffc90000bf7700 R08: ffffffff81a556b0 R09: ffffed1021c694cf R10: 0000000000000000 R11: dffffc0000000001 R12: 0000000000000000 R13: ffff888115f53998 R14: 1ffff11022bea735 R15: 0000000000000000 FS: 0000000000000000(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000000000 CR3: 0000000113aba000 CR4: 00000000003506b0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000082 DR3: 0000000000000000 DR6: 00000000ffff0ff0 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 d9 df 2a ff call 0xff2adfef 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 b6 df 2a ff call 0xff2adfef 39: 41 f6 07 01 testb $0x1,(%r15) 3d: 48 rex.W 3e: 89 .byte 0x89 3f: 5d pop %rbp