BUG: unable to handle page fault for address: ffffed1800000016 #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: 25420 Comm: syz-executor Tainted: G W syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2026 RIP: 0010:vma_last_pgoff mm/interval_tree.c:20 [inline] RIP: 0010:vma_interval_tree_augment_compute_max mm/interval_tree.c:23 [inline] RIP: 0010:vma_interval_tree_augment_propagate mm/interval_tree.c:23 [inline] RIP: 0010:__rb_erase_augmented include/linux/rbtree_augmented.h:295 [inline] RIP: 0010:rb_erase_augmented include/linux/rbtree_augmented.h:303 [inline] RIP: 0010:rb_erase_augmented_cached include/linux/rbtree_augmented.h:314 [inline] RIP: 0010:vma_interval_tree_remove+0x982/0xb00 mm/interval_tree.c:23 Code: 3c 18 00 74 08 4c 89 f7 e8 db 78 0c 00 4d 8b 36 49 83 e6 fc 0f 84 44 01 00 00 e8 19 4a cd ff 49 8d 7e 40 48 89 f8 48 c1 e8 03 <80> 3c 18 00 74 05 e8 b3 78 0c 00 4d 8b 6e 40 4d 8d 7e b0 4c 89 f8 RSP: 0018:ffffc90000def9e8 EFLAGS: 00010a02 RAX: 1ffff11800000016 RBX: dffffc0000000000 RCX: ffff888110ae62c0 RDX: 0000000000000000 RSI: 00000000000003e4 RDI: ffff88c0000000b0 RBP: ffffc90000defa50 R08: ffff88810f4f1467 R09: 1ffff11021e9e28c R10: dffffc0000000000 R11: ffffed1021e9e28d R12: 1ffff1103143275b R13: 00000000000003ec R14: ffff88c000000070 R15: 00000000000003e4 FS: 000055556a27f500(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffffed1800000016 CR3: 00000001992bb000 CR4: 00000000003506b0 DR0: 0000200000000300 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600 Call Trace: __vma_adjust+0x865/0x1850 mm/mmap.c:884 vma_adjust include/linux/mm.h:2625 [inline] __split_vma+0x32b/0x3e0 mm/mmap.c:-1 split_vma+0x7c/0xd0 mm/mmap.c:2813 mprotect_fixup+0x531/0x7d0 mm/mprotect.c:490 do_mprotect_pkey+0x72b/0xad0 mm/mprotect.c:646 __do_sys_mprotect mm/mprotect.c:673 [inline] __se_sys_mprotect mm/mprotect.c:670 [inline] __x64_sys_mprotect+0x80/0x90 mm/mprotect.c:670 x64_sys_call+0x912/0x9a0 arch/x86/include/generated/asm/syscalls_64.h:11 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x66/0xd0 RIP: 0033:0x7f6936acf617 Code: 89 38 eb 84 0f 1f 80 00 00 00 00 48 c7 c2 e8 ff ff ff f7 d8 64 89 02 48 c7 c0 ff ff ff ff e9 7a ff ff ff b8 0a 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007ffe91b8c608 EFLAGS: 00000206 ORIG_RAX: 000000000000000a RAX: ffffffffffffffda RBX: 00007f6936d208a0 RCX: 00007f6936acf617 RDX: 0000000000000001 RSI: 000000000012d000 RDI: 00007f6936bec000 RBP: 00007ffe91b8c6a8 R08: 000055556a280830 R09: 000055556a280850 R10: 0000000000000005 R11: 0000000000000206 R12: 00007ffe91b8c6c0 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 Modules linked in: CR2: ffffed1800000016 ---[ end trace 20c93889284b03ba ]--- RIP: 0010:vma_last_pgoff mm/interval_tree.c:20 [inline] RIP: 0010:vma_interval_tree_augment_compute_max mm/interval_tree.c:23 [inline] RIP: 0010:vma_interval_tree_augment_propagate mm/interval_tree.c:23 [inline] RIP: 0010:__rb_erase_augmented include/linux/rbtree_augmented.h:295 [inline] RIP: 0010:rb_erase_augmented include/linux/rbtree_augmented.h:303 [inline] RIP: 0010:rb_erase_augmented_cached include/linux/rbtree_augmented.h:314 [inline] RIP: 0010:vma_interval_tree_remove+0x982/0xb00 mm/interval_tree.c:23 Code: 3c 18 00 74 08 4c 89 f7 e8 db 78 0c 00 4d 8b 36 49 83 e6 fc 0f 84 44 01 00 00 e8 19 4a cd ff 49 8d 7e 40 48 89 f8 48 c1 e8 03 <80> 3c 18 00 74 05 e8 b3 78 0c 00 4d 8b 6e 40 4d 8d 7e b0 4c 89 f8 RSP: 0018:ffffc90000def9e8 EFLAGS: 00010a02 RAX: 1ffff11800000016 RBX: dffffc0000000000 RCX: ffff888110ae62c0 RDX: 0000000000000000 RSI: 00000000000003e4 RDI: ffff88c0000000b0 RBP: ffffc90000defa50 R08: ffff88810f4f1467 R09: 1ffff11021e9e28c R10: dffffc0000000000 R11: ffffed1021e9e28d R12: 1ffff1103143275b R13: 00000000000003ec R14: ffff88c000000070 R15: 00000000000003e4 FS: 000055556a27f500(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffffed1800000016 CR3: 00000001992bb000 CR4: 00000000003506b0 DR0: 0000200000000300 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600 ---------------- Code disassembly (best guess): 0: 3c 18 cmp $0x18,%al 2: 00 74 08 4c add %dh,0x4c(%rax,%rcx,1) 6: 89 f7 mov %esi,%edi 8: e8 db 78 0c 00 call 0xc78e8 d: 4d 8b 36 mov (%r14),%r14 10: 49 83 e6 fc and $0xfffffffffffffffc,%r14 14: 0f 84 44 01 00 00 je 0x15e 1a: e8 19 4a cd ff call 0xffcd4a38 1f: 49 8d 7e 40 lea 0x40(%r14),%rdi 23: 48 89 f8 mov %rdi,%rax 26: 48 c1 e8 03 shr $0x3,%rax * 2a: 80 3c 18 00 cmpb $0x0,(%rax,%rbx,1) <-- trapping instruction 2e: 74 05 je 0x35 30: e8 b3 78 0c 00 call 0xc78e8 35: 4d 8b 6e 40 mov 0x40(%r14),%r13 39: 4d 8d 7e b0 lea -0x50(%r14),%r15 3d: 4c 89 f8 mov %r15,%rax