================================================================== BUG: KASAN: slab-out-of-bounds in is_ctx_reg kernel/bpf/verifier.c:6173 [inline] BUG: KASAN: slab-out-of-bounds in atomic_ptr_type_ok kernel/bpf/verifier.c:6211 [inline] BUG: KASAN: slab-out-of-bounds in check_atomic_store kernel/bpf/verifier.c:7792 [inline] BUG: KASAN: slab-out-of-bounds in check_atomic kernel/bpf/verifier.c:7829 [inline] BUG: KASAN: slab-out-of-bounds in do_check+0xbe19/0xce40 kernel/bpf/verifier.c:19321 Read of size 4 at addr ffff8881013b5690 by task syz.2.16/3376 CPU: 1 UID: 0 PID: 3376 Comm: syz.2.16 Not tainted 6.14.0-rc3-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025 Call Trace: __dump_stack lib/dump_stack.c:94 [inline] dump_stack_lvl+0x108/0x280 lib/dump_stack.c:120 print_address_description mm/kasan/report.c:408 [inline] print_report+0x16e/0x5b0 mm/kasan/report.c:521 kasan_report+0x143/0x180 mm/kasan/report.c:634 is_ctx_reg kernel/bpf/verifier.c:6173 [inline] atomic_ptr_type_ok kernel/bpf/verifier.c:6211 [inline] check_atomic_store kernel/bpf/verifier.c:7792 [inline] check_atomic kernel/bpf/verifier.c:7829 [inline] do_check+0xbe19/0xce40 kernel/bpf/verifier.c:19321 do_check_common+0x1526/0x1e80 kernel/bpf/verifier.c:22587 do_check_main kernel/bpf/verifier.c:22678 [inline] bpf_check+0x2175/0x1d6f0 kernel/bpf/verifier.c:23508 bpf_prog_load+0x1211/0x1de0 kernel/bpf/syscall.c:2967 __sys_bpf+0x3fa/0x650 kernel/bpf/syscall.c:5811 __do_sys_bpf kernel/bpf/syscall.c:5918 [inline] __se_sys_bpf kernel/bpf/syscall.c:5916 [inline] __x64_sys_bpf+0x77/0x90 kernel/bpf/syscall.c:5916 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0x8d/0x190 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f37cf78d169 Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 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 a8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f37d0512038 EFLAGS: 00000246 ORIG_RAX: 0000000000000141 RAX: ffffffffffffffda RBX: 00007f37cf9a5fa0 RCX: 00007f37cf78d169 RDX: 0000000000000094 RSI: 00004000000009c0 RDI: 0000000000000005 RBP: 00007f37cf80e2a0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000001 R14: 00007f37cf9a5fa0 R15: 00007ffc9bce29b8 Allocated by task 3376: kasan_save_stack mm/kasan/common.c:47 [inline] kasan_save_track+0x3f/0x80 mm/kasan/common.c:68 poison_kmalloc_redzone mm/kasan/common.c:377 [inline] __kasan_kmalloc+0x98/0xb0 mm/kasan/common.c:394 kasan_kmalloc include/linux/kasan.h:260 [inline] __kmalloc_cache_noprof+0x238/0x430 mm/slub.c:4325 kmalloc_noprof include/linux/slab.h:901 [inline] kzalloc_noprof include/linux/slab.h:1037 [inline] do_check_common+0x1d5/0x1e80 kernel/bpf/verifier.c:22486 do_check_main kernel/bpf/verifier.c:22678 [inline] bpf_check+0x2175/0x1d6f0 kernel/bpf/verifier.c:23508 bpf_prog_load+0x1211/0x1de0 kernel/bpf/syscall.c:2967 __sys_bpf+0x3fa/0x650 kernel/bpf/syscall.c:5811 __do_sys_bpf kernel/bpf/syscall.c:5918 [inline] __se_sys_bpf kernel/bpf/syscall.c:5916 [inline] __x64_sys_bpf+0x77/0x90 kernel/bpf/syscall.c:5916 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0x8d/0x190 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f The buggy address belongs to the object at ffff8881013b5000 which belongs to the cache kmalloc-2k of size 2048 The buggy address is located 312 bytes to the right of allocated 1368-byte region [ffff8881013b5000, ffff8881013b5558) The buggy address belongs to the physical page: page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1013b0 head: order:3 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0 flags: 0x100000000000040(head|node=0|zone=2) page_type: f5(slab) raw: 0100000000000040 ffff888100042000 ffffea0005c9b600 dead000000000002 raw: 0000000000000000 0000000080080008 00000000f5000000 0000000000000000 head: 0100000000000040 ffff888100042000 ffffea0005c9b600 dead000000000002 head: 0000000000000000 0000000080080008 00000000f5000000 0000000000000000 head: 0100000000000003 ffffea000404ec01 ffffffffffffffff 0000000000000000 head: 0000000000000008 0000000000000000 00000000ffffffff 0000000000000000 page dumped because: kasan: bad access detected page_owner tracks the page as allocated page last allocated via order 3, migratetype Unmovable, gfp_mask 0xd20c0(__GFP_IO|__GFP_FS|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC), pid 1, tgid 1 (swapper/0), ts 3190056249, free_ts 0 set_page_owner include/linux/page_owner.h:32 [inline] post_alloc_hook+0x108/0x120 mm/page_alloc.c:1585 prep_new_page mm/page_alloc.c:1593 [inline] get_page_from_freelist+0x4a33/0x4c60 mm/page_alloc.c:3538 __alloc_frozen_pages_noprof+0x256/0x650 mm/page_alloc.c:4805 alloc_pages_mpol+0x224/0x4e0 mm/mempolicy.c:2270 alloc_slab_page mm/slub.c:2423 [inline] allocate_slab+0x8b/0x350 mm/slub.c:2587 new_slab mm/slub.c:2640 [inline] ___slab_alloc+0x9f6/0x1130 mm/slub.c:3826 __slab_alloc mm/slub.c:3916 [inline] __slab_alloc_node mm/slub.c:3991 [inline] slab_alloc_node mm/slub.c:4152 [inline] __kmalloc_cache_noprof+0x299/0x430 mm/slub.c:4320 kmalloc_noprof include/linux/slab.h:901 [inline] kzalloc_noprof include/linux/slab.h:1037 [inline] acpi_ds_create_walk_state+0xf2/0x280 drivers/acpi/acpica/dswstate.c:518 acpi_ps_execute_method+0x247/0x770 drivers/acpi/acpica/psxface.c:134 acpi_ns_evaluate+0x5c8/0x8c0 drivers/acpi/acpica/nseval.c:205 acpi_ut_evaluate_object+0x147/0x3d0 drivers/acpi/acpica/uteval.c:60 acpi_rs_get_method_data+0xa8/0x130 drivers/acpi/acpica/rsutils.c:650 acpi_walk_resources+0x143/0x540 drivers/acpi/acpica/rsxface.c:616 acpi_pci_link_get_current+0x1e9/0x4a0 drivers/acpi/pci_link.c:256 acpi_pci_link_set+0x5f6/0x9e0 drivers/acpi/pci_link.c:362 acpi_pci_link_allocate drivers/acpi/pci_link.c:584 [inline] acpi_pci_link_allocate_irq+0x9b0/0x1180 drivers/acpi/pci_link.c:630 page_owner free stack trace missing Memory state around the buggy address: ffff8881013b5580: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ffff8881013b5600: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc >ffff8881013b5680: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ^ ffff8881013b5700: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ffff8881013b5780: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ==================================================================