BUG: TASK stack guard page was hit at ffffc9000eaf7ff8 (stack is ffffc9000eaf8000..ffffc9000eb00000) Oops: stack guard page: 0000 [#1] PREEMPT SMP KASAN PTI CPU: 0 UID: 0 PID: 2591 Comm: syz.1.647 Not tainted syzkaller #0 471281939cd7bfdfff4c6b6074d5d68627c837ba Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026 RIP: 0010:check_region_inline mm/kasan/generic.c:171 [inline] RIP: 0010:kasan_check_range+0xf/0x2b0 mm/kasan/generic.c:189 Code: ff c3 cc cc cc cc cc cc cc cc cc b8 00 00 00 00 90 90 90 90 90 90 90 90 90 90 90 66 0f 1f 00 b0 01 48 85 f6 0f 84 c0 01 00 00 <55> 48 89 e5 41 57 41 56 41 55 41 54 53 4c 8d 04 37 49 39 f8 0f 82 RSP: 0018:ffffc9000eaf8000 EFLAGS: 00010206 RAX: ffff88811dc68001 RBX: 0000000000000060 RCX: ffffffff8144d478 RDX: 0000000000000001 RSI: 0000000000000060 RDI: ffffc9000eaf80a8 RBP: ffffc9000eaf8020 R08: 0000000000001300 R09: 0000000000000000 R10: ffffc9000eaf81f0 R11: ffffed1023bf98a7 R12: 0000000000000000 R13: ffff88811dfcc520 R14: 0000000000000000 R15: ffffc9000eaf80a8 FS: 00007fab2af7d6c0(0000) GS:ffff8881f6e00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffffc9000eaf7ff8 CR3: 000000011e1ce000 CR4: 00000000003526b0 Call Trace: __unwind_start+0x38/0x410 arch/x86/kernel/unwind_frame.c:378 unwind_start arch/x86/include/asm/unwind.h:64 [inline] arch_stack_walk+0xf2/0x170 arch/x86/kernel/stacktrace.c:24 stack_trace_save+0xaa/0x100 kernel/stacktrace.c:122 kasan_save_stack+0x3e/0x60 mm/kasan/common.c:49 __kasan_record_aux_stack+0xb2/0xd0 mm/kasan/generic.c:541 kasan_record_aux_stack_noalloc+0xf/0x20 mm/kasan/generic.c:551 __call_rcu_common+0xd7/0x720 kernel/rcu/tree.c:3098 call_rcu+0x14/0x20 kernel/rcu/tree.c:3202 put_task_struct_rcu_user+0x66/0xb0 kernel/exit.c:236 finish_task_switch+0x325/0x760 kernel/sched/core.c:5936 context_switch kernel/sched/core.c:6030 [inline] __schedule+0x14d6/0x2100 kernel/sched/core.c:7894 preempt_schedule_irq+0xab/0x110 kernel/sched/core.c:8220 raw_irqentry_exit_cond_resched+0x32/0x40 kernel/entry/common.c:311 irqentry_exit+0x4a/0x60 kernel/entry/common.c:354 sysvec_apic_timer_interrupt+0x50/0x90 arch/x86/kernel/apic/apic.c:1049 asm_sysvec_apic_timer_interrupt+0x1f/0x30 arch/x86/include/asm/idtentry.h:702 RIP: 0010:__sanitizer_cov_trace_const_cmp8+0x5/0x90 kernel/kcov.c:320 Code: 10 48 89 74 11 18 48 89 44 11 20 5d c3 cc cc cc cc cc 0f 1f 00 b8 78 22 e1 b4 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 55 <48> 89 e5 48 8b 45 08 65 48 8b 0d dc 24 7d 7e 65 8b 15 dd 24 7d 7e RSP: 0018:ffffc9000eaf8968 EFLAGS: 00000217 RAX: ffffffff81e6b470 RBX: ffff88811dc68850 RCX: ffff88811dc68000 RDX: 0000000000000002 RSI: 0000000000000009 RDI: 0000000000000010 RBP: ffffc9000eaf89d8 R08: ffff8881070d3ccf R09: 1ffff11020e1a799 R10: dffffc0000000000 R11: ffffed1020e1a79a R12: 0000000000000009 R13: ffff8881070d3d18 R14: 0000000000000002 R15: 0000000000000002 __set_page_owner+0x128/0x600 mm/page_owner.c:343 set_page_owner include/linux/page_owner.h:35 [inline] post_alloc_hook+0x37d/0x3b0 mm/page_alloc.c:1863 prep_new_page+0x2d/0x190 mm/page_alloc.c:1871 get_page_from_freelist+0x496e/0x4a20 mm/page_alloc.c:3948 __alloc_pages_noprof+0x35f/0x7e0 mm/page_alloc.c:5315 __alloc_pages_node_noprof include/linux/gfp.h:269 [inline] alloc_pages_node_noprof include/linux/gfp.h:296 [inline] alloc_pages_noprof include/linux/gfp.h:313 [inline] stack_depot_save_flags+0x672/0x800 lib/stackdepot.c:627 stack_depot_save+0x12/0x20 lib/stackdepot.c:686 save_stack+0x133/0x240 mm/page_owner.c:175 __set_page_owner+0x8e/0x600 mm/page_owner.c:338 set_page_owner include/linux/page_owner.h:35 [inline] post_alloc_hook+0x37d/0x3b0 mm/page_alloc.c:1863 prep_new_page+0x2d/0x190 mm/page_alloc.c:1871 get_page_from_freelist+0x496e/0x4a20 mm/page_alloc.c:3948 __alloc_pages_noprof+0x35f/0x7e0 mm/page_alloc.c:5315 __alloc_pages_node_noprof include/linux/gfp.h:269 [inline] alloc_pages_node_noprof include/linux/gfp.h:296 [inline] alloc_pages_noprof include/linux/gfp.h:313 [inline] stack_depot_save_flags+0x672/0x800 lib/stackdepot.c:627 kasan_save_stack mm/kasan/common.c:50 [inline] kasan_save_track+0x4f/0x80 mm/kasan/common.c:70 kasan_save_alloc_info+0x40/0x50 mm/kasan/generic.c:565 poison_kmalloc_redzone mm/kasan/common.c:379 [inline] __kasan_kmalloc+0x96/0xb0 mm/kasan/common.c:396 kasan_kmalloc include/linux/kasan.h:261 [inline] __do_kmalloc_node mm/slub.c:4395 [inline] __kmalloc_node_track_caller_noprof+0x251/0x4f0 mm/slub.c:4414 __do_krealloc mm/slab_common.c:1239 [inline] krealloc_noprof+0x8d/0x130 mm/slab_common.c:1288 ::call rust/kernel/alloc/allocator.rs:102 [inline] ::realloc rust/kernel/alloc/allocator.rs:141 [inline] ::alloc rust/kernel/alloc.rs:159 [inline] >, kernel::alloc::allocator::Kmalloc>>::new_uninit rust/kernel/alloc/kbox.rs:269 [inline] >, kernel::alloc::allocator::Kmalloc> as kernel::init::InPlaceInit>>>::try_init::>::new_uninit::{closure#1}, kernel::sync::arc::ArcInner>, kernel::alloc::AllocError>> rust/kernel/alloc/kbox.rs:386 [inline] >::new_uninit rust/kernel/sync/arc.rs:646 [inline] ::insert_or_update_handle+0x51e/0x2c70 drivers/android/binder/process.rs:849 ::transfer_binder_object+0x224/0xc10 drivers/android/binder/allocation.rs:406 ::translate_object drivers/android/binder/thread.rs:814 [inline] ::copy_transaction_data+0x4031/0x9460 drivers/android/binder/thread.rs:1196 ::new+0x3f8/0x29c0 drivers/android/binder/transaction.rs:150 ::transaction_inner drivers/android/binder/thread.rs:1440 [inline] ::transaction+0x18f8/0x4380 drivers/android/binder/thread.rs:1393 ::write+0x1271/0xa690 drivers/android/binder/thread.rs:1568 ::write_read drivers/android/binder/thread.rs:1704 [inline] ::ioctl_write_read drivers/android/binder/process.rs:1620 [inline] ::ioctl drivers/android/binder/process.rs:1685 [inline] rust_binder::rust_binder_ioctl+0x1231/0x5d80 drivers/android/binder/rust_binder_main.rs:468 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:907 [inline] __se_sys_ioctl+0x132/0x1b0 fs/ioctl.c:893 __x64_sys_ioctl+0x7f/0xa0 fs/ioctl.c:893 x64_sys_call+0x1878/0x2ee0 arch/x86/include/generated/asm/syscalls_64.h:17 do_syscall_x64 arch/x86/entry/common.c:47 [inline] do_syscall_64+0x57/0xf0 arch/x86/entry/common.c:78 entry_SYSCALL_64_after_hwframe+0x76/0x7e RIP: 0033:0x7fab2a19ce59 Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 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:00007fab2af7d028 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007fab2a415fa0 RCX: 00007fab2a19ce59 RDX: 00002000000001c0 RSI: 00000000c0306201 RDI: 0000000000000004 RBP: 00007fab2a232e6f R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fab2a416038 R14: 00007fab2a415fa0 R15: 00007ffd328587b8 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:check_region_inline mm/kasan/generic.c:171 [inline] RIP: 0010:kasan_check_range+0xf/0x2b0 mm/kasan/generic.c:189 Code: ff c3 cc cc cc cc cc cc cc cc cc b8 00 00 00 00 90 90 90 90 90 90 90 90 90 90 90 66 0f 1f 00 b0 01 48 85 f6 0f 84 c0 01 00 00 <55> 48 89 e5 41 57 41 56 41 55 41 54 53 4c 8d 04 37 49 39 f8 0f 82 RSP: 0018:ffffc9000eaf8000 EFLAGS: 00010206 RAX: ffff88811dc68001 RBX: 0000000000000060 RCX: ffffffff8144d478 RDX: 0000000000000001 RSI: 0000000000000060 RDI: ffffc9000eaf80a8 RBP: ffffc9000eaf8020 R08: 0000000000001300 R09: 0000000000000000 R10: ffffc9000eaf81f0 R11: ffffed1023bf98a7 R12: 0000000000000000 R13: ffff88811dfcc520 R14: 0000000000000000 R15: ffffc9000eaf80a8 FS: 00007fab2af7d6c0(0000) GS:ffff8881f6e00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffffc9000eaf7ff8 CR3: 000000011e1ce000 CR4: 00000000003526b0 ---------------- Code disassembly (best guess): 0: ff c3 inc %ebx 2: cc int3 3: cc int3 4: cc int3 5: cc int3 6: cc int3 7: cc int3 8: cc int3 9: cc int3 a: cc int3 b: b8 00 00 00 00 mov $0x0,%eax 10: 90 nop 11: 90 nop 12: 90 nop 13: 90 nop 14: 90 nop 15: 90 nop 16: 90 nop 17: 90 nop 18: 90 nop 19: 90 nop 1a: 90 nop 1b: 66 0f 1f 00 nopw (%rax) 1f: b0 01 mov $0x1,%al 21: 48 85 f6 test %rsi,%rsi 24: 0f 84 c0 01 00 00 je 0x1ea * 2a: 55 push %rbp <-- trapping instruction 2b: 48 89 e5 mov %rsp,%rbp 2e: 41 57 push %r15 30: 41 56 push %r14 32: 41 55 push %r13 34: 41 54 push %r12 36: 53 push %rbx 37: 4c 8d 04 37 lea (%rdi,%rsi,1),%r8 3b: 49 39 f8 cmp %rdi,%r8 3e: 0f .byte 0xf 3f: 82 .byte 0x82