BUG: unable to handle page fault for address: ffffed180000000b #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: 0 PID: 450 Comm: syz-executor647 Tainted: G W 5.15.122-syzkaller-00676-g1463976ddc64 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2023 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:401 [inline] RIP: 0010:__rb_erase_color+0xa08/0xa60 lib/rbtree.c:413 Code: 4c 89 ef e8 6a c4 2b ff 4d 89 65 00 4d 85 f6 49 bc 00 00 00 00 00 fc ff df 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 99 c3 2b ff 49 8d 46 08 4d 39 6e RSP: 0018:ffffc90000b376a0 EFLAGS: 00010a02 RAX: 1ffff1180000000b RBX: ffff88c000000058 RCX: dffffc0000000000 RDX: ffffffff81a47130 RSI: ffff888109344968 RDI: ffff88811d357be8 RBP: ffffc90000b37700 R08: ffffffff81a451f0 R09: ffffed1021268931 R10: 0000000000000000 R11: dffffc0000000001 R12: dffffc0000000000 R13: ffff88811d357be8 R14: ffff88c000000048 R15: ffff88811d4c1620 FS: 0000000000000000(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffffed180000000b CR3: 000000011e71e000 CR4: 00000000003506b0 DR0: 0000000000000000 DR1: 0000000000000000 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:158 [inline] unlink_file_vma+0xd9/0xf0 mm/mmap.c:173 free_pgtables+0x13f/0x280 mm/memory.c:486 exit_mmap+0x3e7/0x6f0 mm/mmap.c:3210 __mmput+0x95/0x310 kernel/fork.c:1171 mmput+0x5b/0x170 kernel/fork.c:1194 exit_mm kernel/exit.c:551 [inline] do_exit+0xbb4/0x2b60 kernel/exit.c:862 do_group_exit+0x141/0x310 kernel/exit.c:997 get_signal+0x7a3/0x1630 kernel/signal.c:2891 arch_do_signal_or_restart+0xbd/0x1680 arch/x86/kernel/signal.c:865 handle_signal_work kernel/entry/common.c:148 [inline] exit_to_user_mode_loop+0xa0/0xe0 kernel/entry/common.c:172 exit_to_user_mode_prepare+0x5a/0xa0 kernel/entry/common.c:208 __syscall_exit_to_user_mode_work kernel/entry/common.c:290 [inline] syscall_exit_to_user_mode+0x26/0x160 kernel/entry/common.c:301 do_syscall_64+0x49/0xb0 arch/x86/entry/common.c:86 entry_SYSCALL_64_after_hwframe+0x61/0xcb RIP: 0033:0x7fc6ed5287f9 Code: Unable to access opcode bytes at RIP 0x7fc6ed5287cf. RSP: 002b:00007fc6ed4df208 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca RAX: fffffffffffffe00 RBX: 00007fc6ed5ad3e8 RCX: 00007fc6ed5287f9 RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007fc6ed5ad3e8 RBP: 00007fc6ed5ad3e0 R08: 0000000000003637 R09: 0000000000003637 R10: 0000000000000000 R11: 0000000000000246 R12: 00007fc6ed4df210 R13: 00007fc6ed579027 R14: 00007fc6ed57900a R15: 0000000000000002 Modules linked in: CR2: ffffed180000000b ---[ end trace 129f48bacf16c1d7 ]--- 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:401 [inline] RIP: 0010:__rb_erase_color+0xa08/0xa60 lib/rbtree.c:413 Code: 4c 89 ef e8 6a c4 2b ff 4d 89 65 00 4d 85 f6 49 bc 00 00 00 00 00 fc ff df 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 99 c3 2b ff 49 8d 46 08 4d 39 6e RSP: 0018:ffffc90000b376a0 EFLAGS: 00010a02 RAX: 1ffff1180000000b RBX: ffff88c000000058 RCX: dffffc0000000000 RDX: ffffffff81a47130 RSI: ffff888109344968 RDI: ffff88811d357be8 RBP: ffffc90000b37700 R08: ffffffff81a451f0 R09: ffffed1021268931 R10: 0000000000000000 R11: dffffc0000000001 R12: dffffc0000000000 R13: ffff88811d357be8 R14: ffff88c000000048 R15: ffff88811d4c1620 FS: 0000000000000000(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffffed180000000b CR3: 000000011e71e000 CR4: 00000000003506b0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 ---------------- Code disassembly (best guess): 0: 4c 89 ef mov %r13,%rdi 3: e8 6a c4 2b ff call 0xff2bc472 8: 4d 89 65 00 mov %r12,0x0(%r13) c: 4d 85 f6 test %r14,%r14 f: 49 bc 00 00 00 00 00 movabs $0xdffffc0000000000,%r12 16: fc ff df 19: 48 8b 5d a0 mov -0x60(%rbp),%rbx 1d: 74 29 je 0x48 1f: 49 8d 5e 10 lea 0x10(%r14),%rbx 23: 48 89 d8 mov %rbx,%rax 26: 48 c1 e8 03 shr $0x3,%rax * 2a: 42 80 3c 20 00 cmpb $0x0,(%rax,%r12,1) <-- trapping instruction 2f: 74 08 je 0x39 31: 48 89 df mov %rbx,%rdi 34: e8 99 c3 2b ff call 0xff2bc3d2 39: 49 8d 46 08 lea 0x8(%r14),%rax 3d: 4d rex.WRB 3e: 39 .byte 0x39 3f: 6e outsb %ds:(%rsi),(%dx)