BUG: unable to handle page fault for address: ffffed1800000010 #PF: supervisor read access in kernel mode #PF: error_code(0x0000) - not-present page PGD 23fff2067 P4D 23fff2067 PUD 0 Oops: 0000 [#1] PREEMPT SMP KASAN CPU: 1 PID: 274 Comm: syz-executor Tainted: G W 5.15.180-syzkaller-00024-g88c4075c39ed #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/19/2025 RIP: 0010:__rb_change_child include/linux/rbtree_augmented.h:173 [inline] RIP: 0010:__rb_rotate_set_parents lib/rbtree.c:81 [inline] RIP: 0010:____rb_erase_color lib/rbtree.c:348 [inline] RIP: 0010:__rb_erase_color+0x7ca/0xaf0 lib/rbtree.c:413 Code: 3b ff 4d 89 27 48 8b 45 d0 48 89 18 4d 85 f6 0f 84 87 00 00 00 49 8d 5e 10 49 89 dc 49 c1 ec 03 48 b8 00 00 00 00 00 fc ff df <41> 80 3c 04 00 74 08 48 89 df e8 87 1c 3b ff 48 8b 45 d0 48 39 03 RSP: 0018:ffffc90000a276c0 EFLAGS: 00010a02 RAX: dffffc0000000000 RBX: ffff88c000000080 RCX: dffffc0000000000 RDX: 0000000000000000 RSI: ffff88812563e058 RDI: ffff8881707a4098 RBP: ffffc90000a27720 R08: dffffc0000000000 R09: ffffed102132a9ec R10: ffffed102132a9ec R11: 1ffff1102132a9eb R12: 1ffff11800000010 R13: ffff8881707a4058 R14: ffff88c000000070 R15: ffff88812563e058 FS: 0000000000000000(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffffed1800000010 CR3: 00000001147d7000 CR4: 00000000003506a0 DR0: 0000000000000000 DR1: 0000200000000300 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: 0033:0x7fac6844033d Code: Unable to access opcode bytes at RIP 0x7fac68440313. RSP: 002b:00007ffc8a60eb18 EFLAGS: 00000246 ORIG_RAX: 0000000000000000 RAX: fffffffffffffe00 RBX: 0000000000000003 RCX: 00007fac6844033d RDX: 0000000000000030 RSI: 00007ffc8a60ebb0 RDI: 00000000000000f9 RBP: 00007ffc8a60eb5c R08: 00000000000002e8 R09: 0079746972756365 R10: 00007fac68633120 R11: 0000000000000246 R12: 0000000000000258 R13: 00000000000927c0 R14: 000000000003ee4e R15: 00007ffc8a60ebb0 Modules linked in: CR2: ffffed1800000010 ---[ end trace 9680e65c8662d0d3 ]--- RIP: 0010:__rb_change_child include/linux/rbtree_augmented.h:173 [inline] RIP: 0010:__rb_rotate_set_parents lib/rbtree.c:81 [inline] RIP: 0010:____rb_erase_color lib/rbtree.c:348 [inline] RIP: 0010:__rb_erase_color+0x7ca/0xaf0 lib/rbtree.c:413 Code: 3b ff 4d 89 27 48 8b 45 d0 48 89 18 4d 85 f6 0f 84 87 00 00 00 49 8d 5e 10 49 89 dc 49 c1 ec 03 48 b8 00 00 00 00 00 fc ff df <41> 80 3c 04 00 74 08 48 89 df e8 87 1c 3b ff 48 8b 45 d0 48 39 03 RSP: 0018:ffffc90000a276c0 EFLAGS: 00010a02 RAX: dffffc0000000000 RBX: ffff88c000000080 RCX: dffffc0000000000 RDX: 0000000000000000 RSI: ffff88812563e058 RDI: ffff8881707a4098 RBP: ffffc90000a27720 R08: dffffc0000000000 R09: ffffed102132a9ec R10: ffffed102132a9ec R11: 1ffff1102132a9eb R12: 1ffff11800000010 R13: ffff8881707a4058 R14: ffff88c000000070 R15: ffff88812563e058 FS: 0000000000000000(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffffed1800000010 CR3: 00000001147d7000 CR4: 00000000003506a0 DR0: 0000000000000000 DR1: 0000200000000300 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600 ---------------- Code disassembly (best guess): 0: 3b ff cmp %edi,%edi 2: 4d 89 27 mov %r12,(%r15) 5: 48 8b 45 d0 mov -0x30(%rbp),%rax 9: 48 89 18 mov %rbx,(%rax) c: 4d 85 f6 test %r14,%r14 f: 0f 84 87 00 00 00 je 0x9c 15: 49 8d 5e 10 lea 0x10(%r14),%rbx 19: 49 89 dc mov %rbx,%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: 48 89 df mov %rbx,%rdi 34: e8 87 1c 3b ff call 0xff3b1cc0 39: 48 8b 45 d0 mov -0x30(%rbp),%rax 3d: 48 39 03 cmp %rax,(%rbx)