BUG: TASK stack guard page was hit at ffffc90001457ff8 (stack is ffffc90001458000..ffffc90001460000) Oops: stack guard page: 0000 [#1] PREEMPT SMP KASAN PTI CPU: 0 UID: 0 PID: 5033 Comm: syz.1.1357 Not tainted syzkaller #0 93eddc1838258aeaad15fa2c6edda141fca4db6a Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026 RIP: 0010:update_se+0x8/0x410 kernel/sched/fair.c:1223 Code: 0c 00 00 e8 1a 00 00 00 5b 5d e9 c3 92 4c 04 cc 66 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 55 48 89 e5 41 57 41 56 <41> 55 41 54 53 48 83 ec 18 49 89 f6 49 89 fc 48 b9 00 00 00 00 00 RSP: 0018:ffffc90001458000 EFLAGS: 00010086 RAX: ffff8881f6e4fa00 RBX: 1ffff9200028b014 RCX: dffffc0000000000 RDX: 1ffff9200028b03c RSI: ffff8881143ab9c0 RDI: ffff8881f6e4fa00 RBP: ffffc90001458010 R08: ffff8881f6e4fa00 R09: 0000000000000001 R10: dffffc0000000000 R11: fffff5200028b02c R12: dffffc0000000000 R13: ffff8881f6e4fc50 R14: ffff8881143ab9c0 R15: ffff8881f6e4fd38 FS: 00007fda957146c0(0000) GS:ffff8881f6e00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffffc90001457ff8 CR3: 0000000101ade000 CR4: 00000000003526b0 DR0: 0000000000000008 DR1: 0000000000000007 DR2: 0000000000000004 DR3: 0000000000000008 DR6: 00000000ffff0ff0 DR7: 0000000000000400 Call Trace: update_curr+0xf8/0x9e0 kernel/sched/fair.c:1291 pick_task_fair+0xc8/0x4e0 kernel/sched/fair.c:9136 pick_next_task_fair+0xb1/0x770 kernel/sched/fair.c:9163 __pick_next_task kernel/sched/core.c:6686 [inline] pick_next_task kernel/sched/core.c:7206 [inline] __schedule+0x753/0x2100 kernel/sched/core.c:7819 preempt_schedule_irq+0xab/0x110 kernel/sched/core.c:8219 raw_irqentry_exit_cond_resched+0x32/0x40 kernel/entry/common.c:311 irqentry_exit+0x4a/0x60 kernel/entry/common.c:354 sysvec_reschedule_ipi+0x72/0x80 arch/x86/kernel/smp.c:248 asm_sysvec_reschedule_ipi+0x1f/0x30 arch/x86/include/asm/idtentry.h:707 RIP: 0010:wmark_pages include/linux/mmzone.h:1071 [inline] RIP: 0010:high_wmark_pages include/linux/mmzone.h:1086 [inline] RIP: 0010:get_page_from_freelist+0x3c9/0x4a20 mm/page_alloc.c:3890 Code: 85 c9 00 00 00 48 8b 44 24 20 48 8d 78 10 48 89 f8 48 c1 e8 03 42 80 3c 20 00 74 05 e8 c0 b0 06 00 48 8b 44 24 20 4c 8b 70 10 <4c> 8d 78 20 4c 89 f8 48 c1 e8 03 42 80 3c 20 00 74 08 4c 89 ff e8 RSP: 0018:ffffc900014585c0 EFLAGS: 00000246 RAX: ffffffff87e4c940 RBX: ffffffff87e4ceb8 RCX: ffffffff81d9b7e1 RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffffffff87e4c950 RBP: ffffc90001458890 R08: ffffffff87e4cebf R09: 1ffffffff0fc99d7 R10: dffffc0000000000 R11: fffffbfff0fc99d8 R12: dffffc0000000000 R13: ffffffff87e4d640 R14: 000000000000260b R15: ffffc90001458938 __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_free_info+0x4a/0x60 mm/kasan/generic.c:579 poison_slab_object mm/kasan/common.c:249 [inline] __kasan_slab_free+0x5f/0x80 mm/kasan/common.c:266 kasan_slab_free include/linux/kasan.h:234 [inline] slab_free_hook mm/slub.c:2445 [inline] slab_free mm/slub.c:4714 [inline] kfree+0x158/0x440 mm/slub.c:4875 krealloc_noprof+0xfa/0x130 mm/slab_common.c:-1 ::call rust/kernel/alloc/allocator.rs:102 [inline] ::realloc rust/kernel/alloc/allocator.rs:141 [inline] ::free rust/kernel/alloc.rs:214 [inline] , kernel::alloc::allocator::Kmalloc> as core::ops::drop::Drop>::drop+0x594/0x850 rust/kernel/alloc/kbox.rs:492 core::ptr::drop_in_place::, kernel::alloc::allocator::Kmalloc>> usr/local/rustup/toolchains/1.91.1-x86_64-unknown-linux-gnu/lib/rustlib/src/rust/library/core/src/ptr/mod.rs:804 [inline] core::mem::drop::, kernel::alloc::allocator::Kmalloc>> usr/local/rustup/toolchains/1.91.1-x86_64-unknown-linux-gnu/lib/rustlib/src/rust/library/core/src/mem/mod.rs:961 [inline] as core::ops::drop::Drop>::drop rust/kernel/sync/arc.rs:404 [inline] core::ptr::drop_in_place::> usr/local/rustup/toolchains/1.91.1-x86_64-unknown-linux-gnu/lib/rustlib/src/rust/library/core/src/ptr/mod.rs:804 [inline] core::ptr::drop_in_place::> usr/local/rustup/toolchains/1.91.1-x86_64-unknown-linux-gnu/lib/rustlib/src/rust/library/core/src/ptr/mod.rs:804 [inline] core::ptr::drop_in_place::>> usr/local/rustup/toolchains/1.91.1-x86_64-unknown-linux-gnu/lib/rustlib/src/rust/library/core/src/ptr/mod.rs:804 [inline] ::update_ref+0x1706/0x2660 drivers/android/binder/process.rs:975 ::cleanup_object drivers/android/binder/allocation.rs:453 [inline] ::drop+0x1715/0x5dd0 drivers/android/binder/allocation.rs:263 core::ptr::drop_in_place::+0x1a/0xf0 usr/local/rustup/toolchains/1.91.1-x86_64-unknown-linux-gnu/lib/rustlib/src/rust/library/core/src/ptr/mod.rs:804 core::ptr::drop_in_place:: usr/local/rustup/toolchains/1.91.1-x86_64-unknown-linux-gnu/lib/rustlib/src/rust/library/core/src/ptr/mod.rs:804 [inline] ::copy_transaction_data+0x7c54/0x9460 drivers/android/binder/thread.rs:1233 ::new+0x3d0/0x28d0 drivers/android/binder/transaction.rs:110 ::transaction_inner drivers/android/binder/thread.rs:1410 [inline] ::transaction+0x1b97/0x3e50 drivers/android/binder/thread.rs:1370 ::write+0x1271/0xa690 drivers/android/binder/thread.rs:1532 ::write_read drivers/android/binder/thread.rs:1668 [inline] ::ioctl_write_read drivers/android/binder/process.rs:1620 [inline] ::ioctl drivers/android/binder/process.rs:1685 [inline] rust_binder::rust_binder_ioctl+0x1192/0x5c20 drivers/android/binder/rust_binder_main.rs:462 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: 0033:0x7fda9479ce59 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:00007fda95714028 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007fda94a15fa0 RCX: 00007fda9479ce59 RDX: 0000200000000100 RSI: 00000000c0306201 RDI: 0000000000000004 RBP: 00007fda94832d6f R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fda94a16038 R14: 00007fda94a15fa0 R15: 00007fff7e5b26f8 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:update_se+0x8/0x410 kernel/sched/fair.c:1223 Code: 0c 00 00 e8 1a 00 00 00 5b 5d e9 c3 92 4c 04 cc 66 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 55 48 89 e5 41 57 41 56 <41> 55 41 54 53 48 83 ec 18 49 89 f6 49 89 fc 48 b9 00 00 00 00 00 RSP: 0018:ffffc90001458000 EFLAGS: 00010086 RAX: ffff8881f6e4fa00 RBX: 1ffff9200028b014 RCX: dffffc0000000000 RDX: 1ffff9200028b03c RSI: ffff8881143ab9c0 RDI: ffff8881f6e4fa00 RBP: ffffc90001458010 R08: ffff8881f6e4fa00 R09: 0000000000000001 R10: dffffc0000000000 R11: fffff5200028b02c R12: dffffc0000000000 R13: ffff8881f6e4fc50 R14: ffff8881143ab9c0 R15: ffff8881f6e4fd38 FS: 00007fda957146c0(0000) GS:ffff8881f6e00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffffc90001457ff8 CR3: 0000000101ade000 CR4: 00000000003526b0 DR0: 0000000000000008 DR1: 0000000000000007 DR2: 0000000000000004 DR3: 0000000000000008 DR6: 00000000ffff0ff0 DR7: 0000000000000400 ---------------- Code disassembly (best guess): 0: 0c 00 or $0x0,%al 2: 00 e8 add %ch,%al 4: 1a 00 sbb (%rax),%al 6: 00 00 add %al,(%rax) 8: 5b pop %rbx 9: 5d pop %rbp a: e9 c3 92 4c 04 jmp 0x44c92d2 f: cc int3 10: 66 90 xchg %ax,%ax 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: 90 nop 1c: 90 nop 1d: 90 nop 1e: 90 nop 1f: 90 nop 20: 90 nop 21: 90 nop 22: 55 push %rbp 23: 48 89 e5 mov %rsp,%rbp 26: 41 57 push %r15 28: 41 56 push %r14 * 2a: 41 55 push %r13 <-- trapping instruction 2c: 41 54 push %r12 2e: 53 push %rbx 2f: 48 83 ec 18 sub $0x18,%rsp 33: 49 89 f6 mov %rsi,%r14 36: 49 89 fc mov %rdi,%r12 39: 48 rex.W 3a: b9 00 00 00 00 mov $0x0,%ecx