BUG: TASK stack guard page was hit at ffffc9000b9b7eb8 (stack is ffffc9000b9b8000..ffffc9000b9c0000) Oops: stack guard page: 0000 [#1] PREEMPT SMP KASAN PTI CPU: 1 UID: 0 PID: 362 Comm: syz.1.9 Not tainted syzkaller #0 5d18be0d7d8d5053dc4a903978481071267b1302 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025 RIP: 0010:get_page_from_freelist+0x1f/0x4a20 mm/page_alloc.c:3766 Code: 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 55 48 89 e5 41 57 41 56 41 55 41 54 53 48 83 e4 e0 48 81 ec a0 02 00 00 49 89 cf <89> bc 24 a0 00 00 00 65 48 8b 04 25 28 00 00 00 48 89 84 24 80 02 RSP: 0018:ffffc9000b9b7ec0 EFLAGS: 00010286 RAX: 0000000000000100 RBX: 0000000000000002 RCX: ffffc9000b9b8230 RDX: 0000000000000101 RSI: 0000000000000002 RDI: 0000000000192000 RBP: ffffc9000b9b8190 R08: ffffffff876aa0a3 R09: 1ffffffff0ed5414 R10: dffffc0000000000 R11: fffffbfff0ed5415 R12: 0000000000000680 R13: dffffc0000000000 R14: 1ffff92001737038 R15: ffffc9000b9b8230 FS: 00007f6bcb0326c0(0000) GS:ffff8881f6f00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffffc9000b9b7eb8 CR3: 0000000112b4e000 CR4: 00000000003526b0 Call Trace: Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:get_page_from_freelist+0x1f/0x4a20 mm/page_alloc.c:3766 Code: 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 55 48 89 e5 41 57 41 56 41 55 41 54 53 48 83 e4 e0 48 81 ec a0 02 00 00 49 89 cf <89> bc 24 a0 00 00 00 65 48 8b 04 25 28 00 00 00 48 89 84 24 80 02 RSP: 0018:ffffc9000b9b7ec0 EFLAGS: 00010286 RAX: 0000000000000100 RBX: 0000000000000002 RCX: ffffc9000b9b8230 RDX: 0000000000000101 RSI: 0000000000000002 RDI: 0000000000192000 RBP: ffffc9000b9b8190 R08: ffffffff876aa0a3 R09: 1ffffffff0ed5414 R10: dffffc0000000000 R11: fffffbfff0ed5415 R12: 0000000000000680 R13: dffffc0000000000 R14: 1ffff92001737038 R15: ffffc9000b9b8230 FS: 00007f6bcb0326c0(0000) GS:ffff8881f6f00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffffc9000b9b7eb8 CR3: 0000000112b4e000 CR4: 00000000003526b0 ---------------- Code disassembly (best guess): 0: 90 nop 1: 90 nop 2: 90 nop 3: 90 nop 4: 90 nop 5: 90 nop 6: 90 nop 7: 90 nop 8: 90 nop 9: 90 nop a: 90 nop b: f3 0f 1e fa endbr64 f: 55 push %rbp 10: 48 89 e5 mov %rsp,%rbp 13: 41 57 push %r15 15: 41 56 push %r14 17: 41 55 push %r13 19: 41 54 push %r12 1b: 53 push %rbx 1c: 48 83 e4 e0 and $0xffffffffffffffe0,%rsp 20: 48 81 ec a0 02 00 00 sub $0x2a0,%rsp 27: 49 89 cf mov %rcx,%r15 * 2a: 89 bc 24 a0 00 00 00 mov %edi,0xa0(%rsp) <-- trapping instruction 31: 65 48 8b 04 25 28 00 mov %gs:0x28,%rax 38: 00 00 3a: 48 rex.W 3b: 89 .byte 0x89 3c: 84 24 80 test %ah,(%rax,%rax,4) 3f: 02 .byte 0x2