==================================================================
BUG: KASAN: slab-out-of-bounds in __bpf_get_stackid+0x6fa/0x960 kernel/bpf/stackmap.c:274
Write of size 48 at addr ffff888109334990 by task syz.0.291/1325
CPU: 0 PID: 1325 Comm: syz.0.291 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2026
Call Trace:
__dump_stack+0x21/0x24 lib/dump_stack.c:88
dump_stack_lvl+0x110/0x170 lib/dump_stack.c:106
print_address_description+0x71/0x200 mm/kasan/report.c:316
print_report+0x4a/0x60 mm/kasan/report.c:420
kasan_report+0x122/0x150 mm/kasan/report.c:524
check_region_inline mm/kasan/generic.c:-1 [inline]
kasan_check_range+0x249/0x2a0 mm/kasan/generic.c:189
memcpy+0x44/0x70 mm/kasan/shadow.c:66
__bpf_get_stackid+0x6fa/0x960 kernel/bpf/stackmap.c:274
____bpf_get_stackid_pe kernel/bpf/stackmap.c:365 [inline]
bpf_get_stackid_pe+0x2ee/0x400 kernel/bpf/stackmap.c:334
bpf_prog_1649ecc1a5870555+0x21/0x31
bpf_dispatcher_nop_func include/linux/bpf.h:987 [inline]
__bpf_prog_run include/linux/filter.h:607 [inline]
bpf_prog_run include/linux/filter.h:614 [inline]
bpf_overflow_handler+0x3d0/0x5e0 kernel/events/core.c:10238
__perf_event_overflow+0x437/0x620 kernel/events/core.c:9448
perf_swevent_hrtimer+0x400/0x5b0 kernel/events/core.c:10879
__run_hrtimer kernel/time/hrtimer.c:1685 [inline]
__hrtimer_run_queues+0x3bb/0x8e0 kernel/time/hrtimer.c:1749
hrtimer_interrupt+0x3c7/0x8c0 kernel/time/hrtimer.c:1811
local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1107 [inline]
__sysvec_apic_timer_interrupt+0x11e/0x440 arch/x86/kernel/apic/apic.c:1124
instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1118 [inline]
sysvec_apic_timer_interrupt+0xa4/0xc0 arch/x86/kernel/apic/apic.c:1118
asm_sysvec_apic_timer_interrupt+0x1b/0x20 arch/x86/include/asm/idtentry.h:691
RIP: 0010:__se_sys_futex+0x8/0x310 kernel/futex/syscalls.c:194
Code: 89 f0 e8 1b 00 00 00 48 83 c4 10 5b 41 5c 41 5d 41 5e 41 5f 5d c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 55 48 89 e5 41 57 41 56 <41> 55 41 54 53 48 83 e4 e0 48 81 ec c0 00 00 00 4c 89 4c 24 18 4c
RSP: 0018:ffffc9000e127ea8 EFLAGS: 00000246
RAX: 1ffff92001c24ff3 RBX: ffffc9000e127f98 RCX: 0000000000000000
RDX: 00000000000f4240 RSI: 0000000000000081 RDI: 00007f2ad0215fac
RBP: ffffc9000e127eb8 R08: 0010b79d97af215c R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 00000000000f4240
R13: 0000000000000000 R14: 0010b79d97af215c R15: dffffc0000000000
__x64_sys_futex+0xe5/0x100 kernel/futex/syscalls.c:194
x64_sys_call+0x7ec/0x9a0 arch/x86/include/generated/asm/syscalls_64.h:203
do_syscall_x64 arch/x86/entry/common.c:46 [inline]
do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:76
entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7f2acff9c799
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:00007f2ad0ed00e8 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: ffffffffffffffda RBX: 00007f2ad0215fa8 RCX: 00007f2acff9c799
RDX: 00000000000f4240 RSI: 0000000000000081 RDI: 00007f2ad0215fac
RBP: 00007f2ad0215fa0 R08: 0010b79d97af215c R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f2ad0216038 R14: 00007ffd8e5e1cd0 R15: 00007ffd8e5e1db8
Allocated by task 1325:
kasan_save_stack mm/kasan/common.c:46 [inline]
kasan_set_track+0x4b/0x70 mm/kasan/common.c:53
kasan_save_alloc_info+0x25/0x30 mm/kasan/generic.c:505
____kasan_kmalloc mm/kasan/common.c:380 [inline]
__kasan_kmalloc+0x95/0xb0 mm/kasan/common.c:389
kasan_kmalloc include/linux/kasan.h:212 [inline]
__do_kmalloc_node mm/slab_common.c:938 [inline]
__kmalloc_node+0xb2/0x1e0 mm/slab_common.c:945
kmalloc_node include/linux/slab.h:589 [inline]
__bpf_map_area_alloc kernel/bpf/syscall.c:328 [inline]
bpf_map_area_alloc+0x4b/0xe0 kernel/bpf/syscall.c:341
prealloc_elems_and_freelist+0x8a/0x1e0 kernel/bpf/stackmap.c:51
stack_map_alloc+0x3a7/0x530 kernel/bpf/stackmap.c:117
find_and_alloc_map kernel/bpf/syscall.c:133 [inline]
map_create+0x49c/0xd80 kernel/bpf/syscall.c:1126
__sys_bpf+0x34e/0x850 kernel/bpf/syscall.c:4987
__do_sys_bpf kernel/bpf/syscall.c:5109 [inline]
__se_sys_bpf kernel/bpf/syscall.c:5107 [inline]
__x64_sys_bpf+0x7c/0x90 kernel/bpf/syscall.c:5107
x64_sys_call+0x488/0x9a0 arch/x86/include/generated/asm/syscalls_64.h:322
do_syscall_x64 arch/x86/entry/common.c:46 [inline]
do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:76
entry_SYSCALL_64_after_hwframe+0x68/0xd2
The buggy address belongs to the object at ffff888109334980
which belongs to the cache kmalloc-64 of size 64
The buggy address is located 16 bytes inside of
64-byte region [ffff888109334980, ffff8881093349c0)
The buggy address belongs to the physical page:
page:ffffea000424cd00 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x109334
flags: 0x4000000000000200(slab|zone=1)
raw: 4000000000000200 ffffea000424f1c0 dead000000000005 ffff888100042780
raw: 0000000000000000 0000000000200020 00000001ffffffff 0000000000000000
page dumped because: kasan: bad access detected
page_owner tracks the page as allocated
page last allocated via order 0, migratetype Unmovable, gfp_mask 0x12cc0(GFP_KERNEL|__GFP_NOWARN|__GFP_NORETRY), pid 1, tgid 1 (swapper/0), ts 1498738550, free_ts 0
set_page_owner include/linux/page_owner.h:33 [inline]
post_alloc_hook+0x1f5/0x210 mm/page_alloc.c:2670
prep_new_page+0x1c/0x110 mm/page_alloc.c:2677
get_page_from_freelist+0x2d12/0x2d80 mm/page_alloc.c:4583
__alloc_pages+0x1fa/0x610 mm/page_alloc.c:5924
alloc_slab_page+0x6e/0xf0 include/linux/gfp.h:-1
allocate_slab mm/slub.c:1967 [inline]
new_slab+0x98/0x3d0 mm/slub.c:2020
___slab_alloc+0x6bd/0xb20 mm/slub.c:3177
__slab_alloc+0x5e/0xa0 mm/slub.c:3263
slab_alloc_node mm/slub.c:3348 [inline]
__kmem_cache_alloc_node+0x203/0x2c0 mm/slub.c:3423
__do_kmalloc_node mm/slab_common.c:937 [inline]
__kmalloc+0xa1/0x1e0 mm/slab_common.c:951
kmalloc include/linux/slab.h:568 [inline]
kzalloc include/linux/slab.h:699 [inline]
acpi_os_allocate_zeroed include/acpi/platform/aclinuxex.h:57 [inline]
acpi_ds_build_internal_package_obj+0x2f9/0xb30 drivers/acpi/acpica/dspkginit.c:112
acpi_ds_eval_data_object_operands+0x2e1/0x530 drivers/acpi/acpica/dsopcode.c:638
acpi_ds_exec_end_op+0xc22/0x10f0 drivers/acpi/acpica/dswexec.c:-1
acpi_ps_parse_loop+0xbd8/0x19c0 drivers/acpi/acpica/psloop.c:525
acpi_ps_parse_aml+0x214/0x9a0 drivers/acpi/acpica/psparse.c:475
acpi_ps_execute_table+0x332/0x410 drivers/acpi/acpica/psxface.c:295
page_owner free stack trace missing
Memory state around the buggy address:
ffff888109334880: 00 00 00 00 00 fc fc fc fc fc fc fc fc fc fc fc
ffff888109334900: 00 00 00 00 00 fc fc fc fc fc fc fc fc fc fc fc
>ffff888109334980: 00 00 00 00 00 fc fc fc fc fc fc fc fc fc fc fc
^
ffff888109334a00: 00 00 00 00 00 fc fc fc fc fc fc fc fc fc fc fc
ffff888109334a80: 00 00 00 00 00 fc fc fc fc fc fc fc fc fc fc fc
==================================================================
----------------
Code disassembly (best guess):
0: 89 f0 mov %esi,%eax
2: e8 1b 00 00 00 call 0x22
7: 48 83 c4 10 add $0x10,%rsp
b: 5b pop %rbx
c: 41 5c pop %r12
e: 41 5d pop %r13
10: 41 5e pop %r14
12: 41 5f pop %r15
14: 5d pop %rbp
15: c3 ret
16: 66 2e 0f 1f 84 00 00 cs nopw 0x0(%rax,%rax,1)
1d: 00 00 00
20: 66 90 xchg %ax,%ax
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 e4 e0 and $0xffffffffffffffe0,%rsp
33: 48 81 ec c0 00 00 00 sub $0xc0,%rsp
3a: 4c 89 4c 24 18 mov %r9,0x18(%rsp)
3f: 4c rex.WR