==================================================================
BUG: KASAN: slab-use-after-free in __bpf_trace_run kernel/trace/bpf_trace.c:2376 [inline]
BUG: KASAN: slab-use-after-free in bpf_trace_run1+0xcb/0x510 kernel/trace/bpf_trace.c:2430
Read of size 8 at addr ffff888022135c18 by task syz-executor.4/9720
CPU: 0 PID: 9720 Comm: syz-executor.4 Not tainted 6.8.0-syzkaller-05239-g476a5e929119 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/29/2024
Call Trace:
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0x1e7/0x2e0 lib/dump_stack.c:106
print_address_description mm/kasan/report.c:377 [inline]
print_report+0x169/0x550 mm/kasan/report.c:488
kasan_report+0x143/0x180 mm/kasan/report.c:601
__bpf_trace_run kernel/trace/bpf_trace.c:2376 [inline]
bpf_trace_run1+0xcb/0x510 kernel/trace/bpf_trace.c:2430
__traceiter_rcu_utilization+0x74/0xb0 include/trace/events/rcu.h:27
trace_rcu_utilization+0x194/0x1c0 include/trace/events/rcu.h:27
rcu_core+0x11f1/0x1830 kernel/rcu/tree.c:2479
__do_softirq+0x2bc/0x943 kernel/softirq.c:554
invoke_softirq kernel/softirq.c:428 [inline]
__irq_exit_rcu+0xf2/0x1c0 kernel/softirq.c:633
irq_exit_rcu+0x9/0x30 kernel/softirq.c:645
instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1043 [inline]
sysvec_apic_timer_interrupt+0xa6/0xc0 arch/x86/kernel/apic/apic.c:1043
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:__fd_array_map_delete_elem+0x219/0x280 kernel/bpf/arraymap.c:892
Code: c7 c0 f9 ff ff ff eb 37 e8 44 bf df ff 49 8d bc ed d0 01 00 00 be 08 00 00 00 e8 62 1c 43 00 45 31 ff 4d 87 bc ed d0 01 00 00 <4d> 85 ff 0f 85 6b ff ff ff e8 19 bf df ff 48 c7 c0 fe ff ff ff 48
RSP: 0018:ffffc90003cffbd8 EFLAGS: 00000246
RAX: ffffffff81b53101 RBX: ffffffff8bb1de18 RCX: ffffffff81b5311e
RDX: 0000000000000001 RSI: 0000000000000008 RDI: ffffc90004f8a948
RBP: 00000000000030ef R08: ffffc90004f8a94f R09: 1ffff920009f1529
R10: dffffc0000000000 R11: fffff520009f152a R12: 0000000000000000
R13: ffffc90004f72000 R14: 1ffff920009ee400 R15: 0000000000000000
bpf_fd_array_map_clear kernel/bpf/arraymap.c:939 [inline]
cgroup_fd_array_free+0xe3/0x250 kernel/bpf/arraymap.c:1274
map_create+0xe2d/0x1200 kernel/bpf/syscall.c:1402
__sys_bpf+0x6d1/0x810 kernel/bpf/syscall.c:5613
__do_sys_bpf kernel/bpf/syscall.c:5738 [inline]
__se_sys_bpf kernel/bpf/syscall.c:5736 [inline]
__x64_sys_bpf+0x7c/0x90 kernel/bpf/syscall.c:5736
do_syscall_64+0xfb/0x240
entry_SYSCALL_64_after_hwframe+0x6d/0x75
RIP: 0033:0x7fbba1e7dda9
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 e1 20 00 00 90 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 b0 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fbba2c620c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000141
RAX: ffffffffffffffda RBX: 00007fbba1fabf80 RCX: 00007fbba1e7dda9
RDX: 0000000000000048 RSI: 0000000020004080 RDI: 0000000000000000
RBP: 00007fbba1eca47a R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000000b R14: 00007fbba1fabf80 R15: 00007ffc2f5adbf8
Allocated by task 9723:
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:370 [inline]
__kasan_kmalloc+0x98/0xb0 mm/kasan/common.c:387
kasan_kmalloc include/linux/kasan.h:211 [inline]
kmalloc_trace+0x1d9/0x360 mm/slub.c:4012
kmalloc include/linux/slab.h:590 [inline]
kzalloc include/linux/slab.h:711 [inline]
bpf_raw_tp_link_attach+0x2a0/0x6e0 kernel/bpf/syscall.c:3816
bpf_raw_tracepoint_open+0x1c2/0x240 kernel/bpf/syscall.c:3863
__sys_bpf+0x3c0/0x810 kernel/bpf/syscall.c:5673
__do_sys_bpf kernel/bpf/syscall.c:5738 [inline]
__se_sys_bpf kernel/bpf/syscall.c:5736 [inline]
__x64_sys_bpf+0x7c/0x90 kernel/bpf/syscall.c:5736
do_syscall_64+0xfb/0x240
entry_SYSCALL_64_after_hwframe+0x6d/0x75
Freed by task 9721:
kasan_save_stack mm/kasan/common.c:47 [inline]
kasan_save_track+0x3f/0x80 mm/kasan/common.c:68
kasan_save_free_info+0x40/0x50 mm/kasan/generic.c:589
poison_slab_object+0xa6/0xe0 mm/kasan/common.c:240
__kasan_slab_free+0x37/0x60 mm/kasan/common.c:256
kasan_slab_free include/linux/kasan.h:184 [inline]
slab_free_hook mm/slub.c:2121 [inline]
slab_free mm/slub.c:4299 [inline]
kfree+0x14a/0x380 mm/slub.c:4409
bpf_link_release+0x3b/0x50 kernel/bpf/syscall.c:3071
__fput+0x429/0x8a0 fs/file_table.c:423
__do_sys_close fs/open.c:1557 [inline]
__se_sys_close fs/open.c:1542 [inline]
__x64_sys_close+0x7f/0x110 fs/open.c:1542
do_syscall_64+0xfb/0x240
entry_SYSCALL_64_after_hwframe+0x6d/0x75
The buggy address belongs to the object at ffff888022135c00
which belongs to the cache kmalloc-128 of size 128
The buggy address is located 24 bytes inside of
freed 128-byte region [ffff888022135c00, ffff888022135c80)
The buggy address belongs to the physical page:
page:ffffea0000884d40 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x22135
flags: 0xfff00000000800(slab|node=0|zone=1|lastcpupid=0x7ff)
page_type: 0xffffffff()
raw: 00fff00000000800 ffff888014c418c0 ffffea0000af63c0 dead000000000002
raw: 0000000000000000 0000000000100010 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 4524, tgid 4524 (udevadm), ts 19661990918, free_ts 16331014865
set_page_owner include/linux/page_owner.h:31 [inline]
post_alloc_hook+0x1ea/0x210 mm/page_alloc.c:1533
prep_new_page mm/page_alloc.c:1540 [inline]
get_page_from_freelist+0x33ea/0x3580 mm/page_alloc.c:3311
__alloc_pages+0x256/0x680 mm/page_alloc.c:4569
__alloc_pages_node include/linux/gfp.h:238 [inline]
alloc_pages_node include/linux/gfp.h:261 [inline]
alloc_slab_page+0x5f/0x160 mm/slub.c:2190
allocate_slab mm/slub.c:2354 [inline]
new_slab+0x84/0x2f0 mm/slub.c:2407
___slab_alloc+0xd1b/0x13e0 mm/slub.c:3540
__slab_alloc mm/slub.c:3625 [inline]
__slab_alloc_node mm/slub.c:3678 [inline]
slab_alloc_node mm/slub.c:3850 [inline]
kmalloc_trace+0x267/0x360 mm/slub.c:4007
kmalloc include/linux/slab.h:590 [inline]
kzalloc include/linux/slab.h:711 [inline]
kernfs_get_open_node fs/kernfs/file.c:523 [inline]
kernfs_fop_open+0x803/0xcd0 fs/kernfs/file.c:691
do_dentry_open+0x907/0x15a0 fs/open.c:956
do_open fs/namei.c:3643 [inline]
path_openat+0x2860/0x3240 fs/namei.c:3800
do_filp_open+0x235/0x490 fs/namei.c:3827
do_sys_openat2+0x13e/0x1d0 fs/open.c:1407
do_sys_open fs/open.c:1422 [inline]
__do_sys_openat fs/open.c:1438 [inline]
__se_sys_openat fs/open.c:1433 [inline]
__x64_sys_openat+0x247/0x2a0 fs/open.c:1433
do_syscall_64+0xfb/0x240
entry_SYSCALL_64_after_hwframe+0x6d/0x75
page last free pid 1 tgid 1 stack trace:
reset_page_owner include/linux/page_owner.h:24 [inline]
free_pages_prepare mm/page_alloc.c:1140 [inline]
free_unref_page_prepare+0x968/0xa90 mm/page_alloc.c:2346
free_unref_page+0x37/0x3f0 mm/page_alloc.c:2486
kasan_depopulate_vmalloc_pte+0x74/0x90 mm/kasan/shadow.c:415
apply_to_pte_range mm/memory.c:2619 [inline]
apply_to_pmd_range mm/memory.c:2663 [inline]
apply_to_pud_range mm/memory.c:2699 [inline]
apply_to_p4d_range mm/memory.c:2735 [inline]
__apply_to_page_range+0x8ec/0xe40 mm/memory.c:2769
kasan_release_vmalloc+0x9a/0xb0 mm/kasan/shadow.c:532
__purge_vmap_area_lazy+0x163f/0x1a10 mm/vmalloc.c:1842
_vm_unmap_aliases+0x7d1/0x870 mm/vmalloc.c:2378
change_page_attr_set_clr+0x2fc/0xf80 arch/x86/mm/pat/set_memory.c:1842
change_page_attr_set arch/x86/mm/pat/set_memory.c:1883 [inline]
set_memory_nx+0xf2/0x130 arch/x86/mm/pat/set_memory.c:2071
free_init_pages arch/x86/mm/init.c:927 [inline]
free_kernel_image_pages arch/x86/mm/init.c:946 [inline]
free_initmem+0x79/0x110 arch/x86/mm/init.c:973
kernel_init+0x31/0x2a0 init/main.c:1455
ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:243
Memory state around the buggy address:
ffff888022135b00: 00 00 00 00 00 00 00 00 00 00 00 00 00 fc fc fc
ffff888022135b80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
>ffff888022135c00: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
^
ffff888022135c80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
ffff888022135d00: 00 00 00 00 00 00 00 00 00 00 00 00 00 fc fc fc
==================================================================
----------------
Code disassembly (best guess):
0: c7 c0 f9 ff ff ff mov $0xfffffff9,%eax
6: eb 37 jmp 0x3f
8: e8 44 bf df ff call 0xffdfbf51
d: 49 8d bc ed d0 01 00 lea 0x1d0(%r13,%rbp,8),%rdi
14: 00
15: be 08 00 00 00 mov $0x8,%esi
1a: e8 62 1c 43 00 call 0x431c81
1f: 45 31 ff xor %r15d,%r15d
22: 4d 87 bc ed d0 01 00 xchg %r15,0x1d0(%r13,%rbp,8)
29: 00
* 2a: 4d 85 ff test %r15,%r15 <-- trapping instruction
2d: 0f 85 6b ff ff ff jne 0xffffff9e
33: e8 19 bf df ff call 0xffdfbf51
38: 48 c7 c0 fe ff ff ff mov $0xfffffffffffffffe,%rax
3f: 48 rex.W