Unable to handle kernel paging request at virtual address fffe8001e8081400 KASAN: maybe wild-memory-access in range [0xfff8000f4040a000-0xfff8000f4040a007] Mem abort info: ESR = 0x0000000096000004 EC = 0x25: DABT (current EL), IL = 32 bits SET = 0, FnV = 0 EA = 0, S1PTW = 0 FSC = 0x04: level 0 translation fault Data abort info: ISV = 0, ISS = 0x00000004, ISS2 = 0x00000000 CM = 0, WnR = 0, TnD = 0, TagAccess = 0 GCS = 0, Overlay = 0, DirtyBit = 0, Xs = 0 swapper pgtable: 4k pages, 48-bit VAs, pgdp=00000002079fa000 [fffe8001e8081400] pgd=0000000000000000, p4d=1000000210124003, pud=0000000000000000 Internal error: Oops: 0000000096000004 [#1] SMP Modules linked in: CPU: 1 UID: 0 PID: 6498 Comm: syz-executor Not tainted 6.15.0-rc7-syzkaller-gd7fa1af5b33e #0 PREEMPT Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025 pstate: 404000c5 (nZcv daIF +PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : __percpu_add_case_64 arch/arm64/include/asm/percpu.h:127 [inline] pc : percpu_ref_get_many+0xc4/0x1f4 include/linux/percpu-refcount.h:205 lr : rcu_read_lock include/linux/rcupdate.h:842 [inline] lr : percpu_ref_get_many+0x3c/0x1f4 include/linux/percpu-refcount.h:202 sp : ffff8000a1257780 x29: ffff8000a1257790 x28: 00000000000000c0 x27: 00000000000000c0 x26: dfff800000000000 x25: ffff8000a12578c0 x24: ffff00019c389780 x23: ffff00019c389738 x22: 1fffe000194527a1 x21: dfff800000000000 x20: ffff0000ca293d08 x19: 0000000000000001 x18: 1fffe0003386f276 x17: ffff80008f31e000 x16: ffff80008adbe9e4 x15: 0000000000000001 x14: 1fffe0001a984903 x13: 0000000000000000 x12: 0000000000000000 x11: 000000002673d780 x10: 0000000000000003 x9 : ffff80010d10c000 x8 : fffe8001e8081400 x7 : ffff800080c9fbbc x6 : 0000000000000000 x5 : 0000000000000001 x4 : 0000000000000000 x3 : 0000000000000002 x2 : 0000000000000008 x1 : ffff80008b3ebc40 x0 : 0000000000000001 Call trace: percpu_ref_get_many+0xc4/0x1f4 include/linux/percpu-refcount.h:205 (P) percpu_ref_get include/linux/percpu-refcount.h:222 [inline] obj_cgroup_get include/linux/memcontrol.h:760 [inline] replace_stock_objcg mm/memcontrol.c:2774 [inline] refill_obj_stock+0x150/0x470 mm/memcontrol.c:2952 obj_cgroup_uncharge mm/memcontrol.c:3015 [inline] __memcg_slab_free_hook+0x110/0x228 mm/memcontrol.c:3102 memcg_slab_free_hook mm/slub.c:2205 [inline] slab_free mm/slub.c:4639 [inline] kmem_cache_free+0x270/0x550 mm/slub.c:4744 __sigqueue_free kernel/signal.c:475 [inline] collect_signal kernel/signal.c:587 [inline] __dequeue_signal+0x3b8/0x4bc kernel/signal.c:609 dequeue_signal+0x174/0x308 kernel/signal.c:632 get_signal+0x41c/0x12f8 kernel/signal.c:2914 do_signal+0x274/0x4438 arch/arm64/kernel/signal.c:1615 do_notify_resume+0xac/0x1ec arch/arm64/kernel/entry-common.c:148 exit_to_user_mode_prepare arch/arm64/kernel/entry-common.c:169 [inline] exit_to_user_mode arch/arm64/kernel/entry-common.c:178 [inline] el0_svc+0xb4/0x17c arch/arm64/kernel/entry-common.c:768 el0t_64_sync_handler+0x78/0x108 arch/arm64/kernel/entry-common.c:786 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:600 Code: 11000529 b9000289 d538d089 8b080128 (f833011f) ---[ end trace 0000000000000000 ]--- ---------------- Code disassembly (best guess): 0: 11000529 add w9, w9, #0x1 4: b9000289 str w9, [x20] 8: d538d089 mrs x9, tpidr_el1 c: 8b080128 add x8, x9, x8 * 10: f833011f stadd x19, [x8] <-- trapping instruction