BUG: unable to handle page fault for address: ffffed180000001a #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: 14380 Comm: syz.9.4296 Tainted: G W 5.15.168-syzkaller-00719-g101e665d55a8 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 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+0x777/0xa60 lib/rbtree.c:413 Code: 00 49 89 c4 74 08 4c 89 ef e8 e5 b3 2a ff 48 8b 45 c8 49 89 45 00 4d 85 f6 48 8b 5d a0 74 29 49 8d 5e 10 48 89 d8 48 c1 e8 03 <42> 80 3c 20 00 74 08 48 89 df e8 1a b3 2a ff 49 8d 46 08 4d 39 6e RSP: 0018:ffffc90000d676a0 EFLAGS: 00010a02 RAX: 1ffff1180000001a RBX: ffff88c0000000d0 RCX: dffffc0000000000 RDX: 0000000000000000 RSI: ffff88812563a3d0 RDI: ffff88811374bb00 RBP: ffffc90000d67700 R08: ffffffff81a55d20 R09: ffffed1021318645 R10: 0000000000000000 R11: dffffc0000000001 R12: dffffc0000000000 R13: ffff888110911870 R14: ffff88c0000000c0 R15: ffff88812563a3d0 FS: 0000000000000000(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffffed180000001a CR3: 0000000006a0f000 CR4: 00000000003506a0 DR0: 0000000000000000 DR1: 000000000000000a DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 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:2907 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: 0033:0x7fb7fb82b819 Code: Unable to access opcode bytes at RIP 0x7fb7fb82b7ef. RSP: 002b:00007fb7f9ea4038 EFLAGS: 00000246 ORIG_RAX: 000000000000012b RAX: fffffffffffffe00 RBX: 00007fb7fb9e2fa0 RCX: 00007fb7fb82b819 RDX: 0000000000010106 RSI: 00000000200000c0 RDI: 0000000000000003 RBP: 00007fb7fb89e75e R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000002 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 00007fb7fb9e2fa0 R15: 00007ffd8d131f68 Modules linked in: CR2: ffffed180000001a ---[ end trace ed096f263b0fd750 ]--- 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+0x777/0xa60 lib/rbtree.c:413 Code: 00 49 89 c4 74 08 4c 89 ef e8 e5 b3 2a ff 48 8b 45 c8 49 89 45 00 4d 85 f6 48 8b 5d a0 74 29 49 8d 5e 10 48 89 d8 48 c1 e8 03 <42> 80 3c 20 00 74 08 48 89 df e8 1a b3 2a ff 49 8d 46 08 4d 39 6e RSP: 0018:ffffc90000d676a0 EFLAGS: 00010a02 RAX: 1ffff1180000001a RBX: ffff88c0000000d0 RCX: dffffc0000000000 RDX: 0000000000000000 RSI: ffff88812563a3d0 RDI: ffff88811374bb00 RBP: ffffc90000d67700 R08: ffffffff81a55d20 R09: ffffed1021318645 R10: 0000000000000000 R11: dffffc0000000001 R12: dffffc0000000000 R13: ffff888110911870 R14: ffff88c0000000c0 R15: ffff88812563a3d0 FS: 0000000000000000(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffffed180000001a CR3: 0000000006a0f000 CR4: 00000000003506a0 DR0: 0000000000000000 DR1: 000000000000000a DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 ---------------- Code disassembly (best guess), 1 bytes skipped: 0: 49 89 c4 mov %rax,%r12 3: 74 08 je 0xd 5: 4c 89 ef mov %r13,%rdi 8: e8 e5 b3 2a ff call 0xff2ab3f2 d: 48 8b 45 c8 mov -0x38(%rbp),%rax 11: 49 89 45 00 mov %rax,0x0(%r13) 15: 4d 85 f6 test %r14,%r14 18: 48 8b 5d a0 mov -0x60(%rbp),%rbx 1c: 74 29 je 0x47 1e: 49 8d 5e 10 lea 0x10(%r14),%rbx 22: 48 89 d8 mov %rbx,%rax 25: 48 c1 e8 03 shr $0x3,%rax * 29: 42 80 3c 20 00 cmpb $0x0,(%rax,%r12,1) <-- trapping instruction 2e: 74 08 je 0x38 30: 48 89 df mov %rbx,%rdi 33: e8 1a b3 2a ff call 0xff2ab352 38: 49 8d 46 08 lea 0x8(%r14),%rax 3c: 4d rex.WRB 3d: 39 .byte 0x39 3e: 6e outsb %ds:(%rsi),(%dx)