BUG: unable to handle page fault for address: ffffed180000001c #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: 712 Comm: syz-executor.0 Tainted: G W 5.15.185-syzkaller-1080615-g0d918fa8e88d #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 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:401 [inline] RIP: 0010:__rb_erase_color+0xa34/0xaf0 lib/rbtree.c:413 Code: ff e8 b0 d8 3a ff 4d 89 27 48 8b 45 d0 48 89 18 4d 85 f6 74 70 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 dd d7 3a ff 48 8b 45 d0 48 39 03 RSP: 0000:ffffc9000215f6c0 EFLAGS: 00010a02 RAX: dffffc0000000000 RBX: ffff88c0000000e0 RCX: dffffc0000000000 RDX: ffffffff819aeab0 RSI: 1ffff1102132292d RDI: ffff88810c7fbd10 RBP: ffffc9000215f720 R08: dffffc0000000000 R09: ffffed1021322931 R10: ffffed1021322931 R11: 1ffff11021322930 R12: 1ffff1180000001c R13: ffff88810c2e22a8 R14: ffff88c0000000d0 R15: ffff88810c2e22a8 FS: 0000000000000000(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffffed180000001c CR3: 000000000660f000 CR4: 00000000003506a0 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+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: 0033:0x7f0a2697fd39 Code: Unable to access opcode bytes at RIP 0x7f0a2697fd0f. RSP: 002b:00007f0a268e3178 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca RAX: fffffffffffffe00 RBX: 00007f0a26aa1058 RCX: 00007f0a2697fd39 RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007f0a26aa1058 RBP: 00007f0a26aa1050 R08: 00007f0a268e36c0 R09: 00007f0a268e36c0 R10: 0000000000000000 R11: 0000000000000246 R12: 00007f0a26aa105c R13: 000000000000006e R14: 00007ffcfad461d0 R15: 00007ffcfad462b8 Modules linked in: CR2: ffffed180000001c ---[ end trace 6b713a51a8c3cb7a ]--- 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+0xa34/0xaf0 lib/rbtree.c:413 Code: ff e8 b0 d8 3a ff 4d 89 27 48 8b 45 d0 48 89 18 4d 85 f6 74 70 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 dd d7 3a ff 48 8b 45 d0 48 39 03 RSP: 0000:ffffc9000215f6c0 EFLAGS: 00010a02 RAX: dffffc0000000000 RBX: ffff88c0000000e0 RCX: dffffc0000000000 RDX: ffffffff819aeab0 RSI: 1ffff1102132292d RDI: ffff88810c7fbd10 RBP: ffffc9000215f720 R08: dffffc0000000000 R09: ffffed1021322931 R10: ffffed1021322931 R11: 1ffff11021322930 R12: 1ffff1180000001c R13: ffff88810c2e22a8 R14: ffff88c0000000d0 R15: ffff88810c2e22a8 FS: 0000000000000000(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffffed180000001c CR3: 000000000660f000 CR4: 00000000003506a0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 ---------------- Code disassembly (best guess), 1 bytes skipped: 0: e8 b0 d8 3a ff call 0xff3ad8b5 5: 4d 89 27 mov %r12,(%r15) 8: 48 8b 45 d0 mov -0x30(%rbp),%rax c: 48 89 18 mov %rbx,(%rax) f: 4d 85 f6 test %r14,%r14 12: 74 70 je 0x84 14: 49 8d 5e 10 lea 0x10(%r14),%rbx 18: 49 89 dc mov %rbx,%r12 1b: 49 c1 ec 03 shr $0x3,%r12 1f: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax 26: fc ff df * 29: 41 80 3c 04 00 cmpb $0x0,(%r12,%rax,1) <-- trapping instruction 2e: 74 08 je 0x38 30: 48 89 df mov %rbx,%rdi 33: e8 dd d7 3a ff call 0xff3ad815 38: 48 8b 45 d0 mov -0x30(%rbp),%rax 3c: 48 39 03 cmp %rax,(%rbx)