BUG: unable to handle page fault for address: ffffed1800000014 #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: 536 Comm: syz-executor.0 Tainted: G W 5.15.148-syzkaller-1069047-g993bed180178 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024 RIP: 0010:____rb_erase_color lib/rbtree.c:240 [inline] RIP: 0010:__rb_erase_color+0x3b/0xa60 lib/rbtree.c:413 Code: 48 89 55 b0 48 89 75 a0 48 89 fb 49 bc 00 00 00 00 00 fc ff df 45 31 ff 49 89 dd 48 83 c3 08 48 89 d8 48 c1 e8 03 48 89 45 c8 <42> 80 3c 20 00 74 08 48 89 df e8 86 29 2b ff 4c 8b 33 4d 39 f7 0f RSP: 0018:ffffc90000a67580 EFLAGS: 00010a06 RAX: 1ffff11800000014 RBX: ffff88c0000000a0 RCX: dffffc0000000000 RDX: ffffffff81a4f280 RSI: ffff88810fa70ef8 RDI: ffff88810bad9870 RBP: ffffc90000a675e0 R08: ffffffff81a4d340 R09: ffffed1021f4e1e3 R10: 0000000000000000 R11: dffffc0000000001 R12: dffffc0000000000 R13: ffff88c000000098 R14: 1ffff1102175b30e R15: ffff88810bad9870 FS: 0000000000000000(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffffed1800000014 CR3: 000000000620f000 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:1179 mmput+0x5b/0x170 kernel/fork.c:1202 exit_mm kernel/exit.c:552 [inline] do_exit+0xb9c/0x2ca0 kernel/exit.c:865 do_group_exit+0x141/0x310 kernel/exit.c:1000 get_signal+0x7a3/0x1630 kernel/signal.c:2896 arch_do_signal_or_restart+0xbd/0x1680 arch/x86/kernel/signal.c:867 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 irqentry_exit_to_user_mode+0x9/0x20 kernel/entry/common.c:314 irqentry_exit+0x12/0x40 kernel/entry/common.c:405 exc_page_fault+0x47a/0x830 arch/x86/mm/fault.c:1608 asm_exc_page_fault+0x27/0x30 arch/x86/include/asm/idtentry.h:568 RIP: 0033:0x7fb131b176c7 Code: Unable to access opcode bytes at RIP 0x7fb131b1769d. RSP: 002b:00007fb1316e90f0 EFLAGS: 00010206 RAX: 0000000000000004 RBX: 00007fb131c85f80 RCX: 00007fb131bb247a RDX: 0000000000000000 RSI: 0000000020000200 RDI: 0000000000000005 RBP: 00007fb131bb247a R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 000000000000000b R14: 00007fb131c85f80 R15: 00007ffe8e53c258 Modules linked in: CR2: ffffed1800000014 ---[ end trace 471a7cdb03fc0753 ]--- RIP: 0010:____rb_erase_color lib/rbtree.c:240 [inline] RIP: 0010:__rb_erase_color+0x3b/0xa60 lib/rbtree.c:413 Code: 48 89 55 b0 48 89 75 a0 48 89 fb 49 bc 00 00 00 00 00 fc ff df 45 31 ff 49 89 dd 48 83 c3 08 48 89 d8 48 c1 e8 03 48 89 45 c8 <42> 80 3c 20 00 74 08 48 89 df e8 86 29 2b ff 4c 8b 33 4d 39 f7 0f RSP: 0018:ffffc90000a67580 EFLAGS: 00010a06 RAX: 1ffff11800000014 RBX: ffff88c0000000a0 RCX: dffffc0000000000 RDX: ffffffff81a4f280 RSI: ffff88810fa70ef8 RDI: ffff88810bad9870 RBP: ffffc90000a675e0 R08: ffffffff81a4d340 R09: ffffed1021f4e1e3 R10: 0000000000000000 R11: dffffc0000000001 R12: dffffc0000000000 R13: ffff88c000000098 R14: 1ffff1102175b30e R15: ffff88810bad9870 FS: 0000000000000000(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffffed1800000014 CR3: 000000000620f000 CR4: 00000000003506b0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 ---------------- Code disassembly (best guess): 0: 48 89 55 b0 mov %rdx,-0x50(%rbp) 4: 48 89 75 a0 mov %rsi,-0x60(%rbp) 8: 48 89 fb mov %rdi,%rbx b: 49 bc 00 00 00 00 00 movabs $0xdffffc0000000000,%r12 12: fc ff df 15: 45 31 ff xor %r15d,%r15d 18: 49 89 dd mov %rbx,%r13 1b: 48 83 c3 08 add $0x8,%rbx 1f: 48 89 d8 mov %rbx,%rax 22: 48 c1 e8 03 shr $0x3,%rax 26: 48 89 45 c8 mov %rax,-0x38(%rbp) * 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 86 29 2b ff call 0xff2b29bf 39: 4c 8b 33 mov (%rbx),%r14 3c: 4d 39 f7 cmp %r14,%r15 3f: 0f .byte 0xf