general protection fault, probably for non-canonical address 0xdffffc00134a283e: 0000 [#1] PREEMPT SMP KASAN KASAN: probably user-memory-access in range [0x000000009a5141f0-0x000000009a5141f7] CPU: 1 PID: 15437 Comm: syz-executor.1 Not tainted 5.8.0-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:__rb_change_child include/linux/rbtree_augmented.h:173 [inline] RIP: 0010:__rb_erase_augmented include/linux/rbtree_augmented.h:216 [inline] RIP: 0010:rb_erase_augmented include/linux/rbtree_augmented.h:303 [inline] RIP: 0010:rb_erase_augmented_cached include/linux/rbtree_augmented.h:314 [inline] RIP: 0010:__anon_vma_interval_tree_remove mm/interval_tree.c:71 [inline] RIP: 0010:anon_vma_interval_tree_remove+0x93b/0xf40 mm/interval_tree.c:88 Code: e3 e8 89 42 d2 ff 4d 85 e4 0f 84 89 01 00 00 e8 db 45 d2 ff 4d 8d 7c 24 10 48 b8 00 00 00 00 00 fc ff df 4c 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 0f 05 00 00 48 8b 44 24 10 49 3b 44 24 10 0f 84 RSP: 0018:ffffc9001af4f910 EFLAGS: 00010202 RAX: dffffc0000000000 RBX: 000000009a5141e0 RCX: ffffffff81a203a7 RDX: 00000000134a283e RSI: ffffffff81a203b5 RDI: 0000000000000007 RBP: 0000000000000000 R08: ffff8880a0fa03b0 R09: ffff88809a54b117 R10: 0000000000000000 R11: 0000000000000000 R12: 000000009a5141e0 R13: 000000009a5141e0 R14: 0000000000000000 R15: 000000009a5141f0 FS: 0000000000000000(0000) GS:ffff8880ae700000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007ffe28c26cf0 CR3: 00000000a6bde000 CR4: 00000000001526e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: unlink_anon_vmas+0x218/0x830 mm/rmap.c:402 free_pgtables+0xe2/0x2f0 mm/memory.c:398 exit_mmap+0x2c0/0x530 mm/mmap.c:3184 __mmput+0x122/0x470 kernel/fork.c:1076 mmput+0x53/0x60 kernel/fork.c:1097 exit_mm kernel/exit.c:483 [inline] do_exit+0xa8b/0x29f0 kernel/exit.c:793 do_group_exit+0x125/0x310 kernel/exit.c:903 get_signal+0x40b/0x1ee0 kernel/signal.c:2743 arch_do_signal+0x82/0x2520 arch/x86/kernel/signal.c:811 exit_to_user_mode_loop kernel/entry/common.c:135 [inline] exit_to_user_mode_prepare+0x172/0x1d0 kernel/entry/common.c:166 syscall_exit_to_user_mode+0x59/0x2b0 kernel/entry/common.c:241 entry_SYSCALL_64_after_hwframe+0x44/0xa9 RIP: 0033:0x45d189 Code: Bad RIP value. RSP: 002b:00007fd3dea68cf8 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca RAX: 0000000000000000 RBX: 000000000118cf48 RCX: 000000000045d189 RDX: 0000000000000000 RSI: 0000000000000080 RDI: 000000000118cf48 RBP: 000000000118cf40 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000118cf4c R13: 000000000169fb6f R14: 00007fd3dea699c0 R15: 000000000118cf4c Modules linked in: ---[ end trace dd98c5e2b940452f ]--- RIP: 0010:__rb_change_child include/linux/rbtree_augmented.h:173 [inline] RIP: 0010:__rb_erase_augmented include/linux/rbtree_augmented.h:216 [inline] RIP: 0010:rb_erase_augmented include/linux/rbtree_augmented.h:303 [inline] RIP: 0010:rb_erase_augmented_cached include/linux/rbtree_augmented.h:314 [inline] RIP: 0010:__anon_vma_interval_tree_remove mm/interval_tree.c:71 [inline] RIP: 0010:anon_vma_interval_tree_remove+0x93b/0xf40 mm/interval_tree.c:88 Code: e3 e8 89 42 d2 ff 4d 85 e4 0f 84 89 01 00 00 e8 db 45 d2 ff 4d 8d 7c 24 10 48 b8 00 00 00 00 00 fc ff df 4c 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 0f 05 00 00 48 8b 44 24 10 49 3b 44 24 10 0f 84 RSP: 0018:ffffc9001af4f910 EFLAGS: 00010202 RAX: dffffc0000000000 RBX: 000000009a5141e0 RCX: ffffffff81a203a7 RDX: 00000000134a283e RSI: ffffffff81a203b5 RDI: 0000000000000007 RBP: 0000000000000000 R08: ffff8880a0fa03b0 R09: ffff88809a54b117 R10: 0000000000000000 R11: 0000000000000000 R12: 000000009a5141e0 R13: 000000009a5141e0 R14: 0000000000000000 R15: 000000009a5141f0 FS: 0000000000000000(0000) GS:ffff8880ae700000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007ffc50b4efd8 CR3: 00000001e3c0f000 CR4: 00000000001526e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400