==================================================================
BUG: KASAN: slab-out-of-bounds in __bpf_get_stackid+0x677/0xcf0 kernel/bpf/stackmap.c:265
Write of size 8 at addr ffff88803f7f5658 by task syz.1.703/7580

CPU: 1 UID: 0 PID: 7580 Comm: syz.1.703 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
Call Trace:
 <TASK>
 dump_stack_lvl+0x189/0x250 lib/dump_stack.c:120
 print_address_description mm/kasan/report.c:378 [inline]
 print_report+0xca/0x240 mm/kasan/report.c:482
 kasan_report+0x118/0x150 mm/kasan/report.c:595
 __bpf_get_stackid+0x677/0xcf0 kernel/bpf/stackmap.c:265
 ____bpf_get_stackid_raw_tp kernel/trace/bpf_trace.c:1627 [inline]
 bpf_get_stackid_raw_tp+0x196/0x210 kernel/trace/bpf_trace.c:1616
 bpf_prog_4f1a55a5b93b961c+0x2a/0x32
 bpf_dispatcher_nop_func include/linux/bpf.h:1340 [inline]
 __bpf_prog_run include/linux/filter.h:718 [inline]
 bpf_prog_run include/linux/filter.h:725 [inline]
 __bpf_trace_run kernel/trace/bpf_trace.c:2074 [inline]
 bpf_trace_run4+0x28e/0x4a0 kernel/trace/bpf_trace.c:2117
 __do_trace_mm_page_alloc include/trace/events/kmem.h:177 [inline]
 trace_mm_page_alloc+0x129/0x150 include/trace/events/kmem.h:177
 __alloc_frozen_pages_noprof+0x1d6/0x370 mm/page_alloc.c:5170
 alloc_pages_mpol+0x232/0x4a0 mm/mempolicy.c:2416
 alloc_frozen_pages_noprof mm/mempolicy.c:2487 [inline]
 alloc_pages_noprof+0xa9/0x190 mm/mempolicy.c:2507
 get_free_pages_noprof+0xf/0x80 mm/page_alloc.c:5207
 __kasan_populate_vmalloc mm/kasan/shadow.c:364 [inline]
 kasan_populate_vmalloc+0x38/0x270 mm/kasan/shadow.c:435
 alloc_vmap_area+0xd62/0x14a0 mm/vmalloc.c:2092
 __get_vm_area_node+0x1f8/0x300 mm/vmalloc.c:3187
 __vmalloc_node_range_noprof+0x301/0x12f0 mm/vmalloc.c:3853
 __vmalloc_node_noprof mm/vmalloc.c:3956 [inline]
 __vmalloc_noprof+0xb1/0xf0 mm/vmalloc.c:3970
 bpf_prog_alloc_no_stats+0x4a/0x4d0 kernel/bpf/core.c:106
 bpf_prog_alloc+0x3c/0x1a0 kernel/bpf/core.c:153
 bpf_prog_load+0x735/0x1930 kernel/bpf/syscall.c:2913
 __sys_bpf+0x4ff/0x850 kernel/bpf/syscall.c:6075
 __do_sys_bpf kernel/bpf/syscall.c:6185 [inline]
 __se_sys_bpf kernel/bpf/syscall.c:6183 [inline]
 __x64_sys_bpf+0x7c/0x90 kernel/bpf/syscall.c:6183
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xfa/0x3b0 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fe1b2b8ec29
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:00007fe1b3a23038 EFLAGS: 00000246 ORIG_RAX: 0000000000000141
RAX: ffffffffffffffda RBX: 00007fe1b2dd5fa0 RCX: 00007fe1b2b8ec29
RDX: 0000000000000094 RSI: 0000200000000680 RDI: 0000000000000005
RBP: 00007fe1b2c11e41 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fe1b2dd6038 R14: 00007fe1b2dd5fa0 R15: 00007fff553887c8
 </TASK>

Allocated by task 7577:
 kasan_save_stack mm/kasan/common.c:47 [inline]
 kasan_save_track+0x3e/0x80 mm/kasan/common.c:68
 poison_kmalloc_redzone mm/kasan/common.c:388 [inline]
 __kasan_kmalloc+0x93/0xb0 mm/kasan/common.c:405
 kasan_kmalloc include/linux/kasan.h:260 [inline]
 __do_kmalloc_node mm/slub.c:4376 [inline]
 __kmalloc_node_noprof+0x276/0x4e0 mm/slub.c:4382
 kmalloc_node_noprof include/linux/slab.h:932 [inline]
 __bpf_map_area_alloc kernel/bpf/syscall.c:394 [inline]
 bpf_map_area_alloc+0x64/0x180 kernel/bpf/syscall.c:407
 prealloc_elems_and_freelist+0x86/0x1d0 kernel/bpf/stackmap.c:51
 stack_map_alloc+0x33f/0x4c0 kernel/bpf/stackmap.c:114
 map_create+0xaa6/0x1640 kernel/bpf/syscall.c:1482
 __sys_bpf+0x5e8/0x850 kernel/bpf/syscall.c:6057
 __do_sys_bpf kernel/bpf/syscall.c:6185 [inline]
 __se_sys_bpf kernel/bpf/syscall.c:6183 [inline]
 __x64_sys_bpf+0x7c/0x90 kernel/bpf/syscall.c:6183
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xfa/0x3b0 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f

The buggy address belongs to the object at ffff88803f7f5000
 which belongs to the cache kmalloc-cg-2k of size 2048
The buggy address is located 24 bytes to the right of
 allocated 1600-byte region [ffff88803f7f5000, ffff88803f7f5640)

The buggy address belongs to the physical page:
page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x3f7f0
head: order:3 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0
memcg:ffff888024157901
flags: 0xfff00000000040(head|node=0|zone=1|lastcpupid=0x7ff)
page_type: f5(slab)
raw: 00fff00000000040 ffff88801a44b3c0 dead000000000100 dead000000000122
raw: 0000000000000000 0000000000080008 00000000f5000000 ffff888024157901
head: 00fff00000000040 ffff88801a44b3c0 dead000000000100 dead000000000122
head: 0000000000000000 0000000000080008 00000000f5000000 ffff888024157901
head: 00fff00000000003 ffffea0000fdfc01 00000000ffffffff 00000000ffffffff
head: ffffffffffffffff 0000000000000000 00000000ffffffff 0000000000000008
page dumped because: kasan: bad access detected
page_owner tracks the page as allocated
page last allocated via order 3, migratetype Unmovable, gfp_mask 0x1d20c0(__GFP_IO|__GFP_FS|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC|__GFP_HARDWALL), pid 6966, tgid 6964 (syz.2.437), ts 76593746700, free_ts 76579600697
 set_page_owner include/linux/page_owner.h:32 [inline]
 post_alloc_hook+0x240/0x2a0 mm/page_alloc.c:1851
 prep_new_page mm/page_alloc.c:1859 [inline]
 get_page_from_freelist+0x21e4/0x22c0 mm/page_alloc.c:3858
 __alloc_frozen_pages_noprof+0x181/0x370 mm/page_alloc.c:5148
 alloc_pages_mpol+0x232/0x4a0 mm/mempolicy.c:2416
 alloc_slab_page mm/slub.c:2492 [inline]
 allocate_slab+0x8a/0x370 mm/slub.c:2660
 new_slab mm/slub.c:2714 [inline]
 ___slab_alloc+0xbeb/0x1420 mm/slub.c:3901
 __slab_alloc mm/slub.c:3992 [inline]
 __slab_alloc_node mm/slub.c:4067 [inline]
 slab_alloc_node mm/slub.c:4228 [inline]
 __do_kmalloc_node mm/slub.c:4375 [inline]
 __kmalloc_node_noprof+0x2fd/0x4e0 mm/slub.c:4382
 kmalloc_node_noprof include/linux/slab.h:932 [inline]
 __bpf_map_area_alloc kernel/bpf/syscall.c:394 [inline]
 bpf_map_area_alloc+0x64/0x180 kernel/bpf/syscall.c:407
 prealloc_elems_and_freelist+0x86/0x1d0 kernel/bpf/stackmap.c:51
 stack_map_alloc+0x33f/0x4c0 kernel/bpf/stackmap.c:114
 map_create+0xaa6/0x1640 kernel/bpf/syscall.c:1482
 __sys_bpf+0x5e8/0x850 kernel/bpf/syscall.c:6057
 __do_sys_bpf kernel/bpf/syscall.c:6185 [inline]
 __se_sys_bpf kernel/bpf/syscall.c:6183 [inline]
 __x64_sys_bpf+0x7c/0x90 kernel/bpf/syscall.c:6183
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xfa/0x3b0 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
page last free pid 5961 tgid 5961 stack trace:
 reset_page_owner include/linux/page_owner.h:25 [inline]
 free_pages_prepare mm/page_alloc.c:1395 [inline]
 __free_frozen_pages+0xbc4/0xd30 mm/page_alloc.c:2895
 discard_slab mm/slub.c:2758 [inline]
 __put_partials+0x156/0x1a0 mm/slub.c:3223
 put_cpu_partial+0x17c/0x250 mm/slub.c:3298
 __slab_free+0x2d5/0x3c0 mm/slub.c:4565
 qlink_free mm/kasan/quarantine.c:163 [inline]
 qlist_free_all+0x97/0x140 mm/kasan/quarantine.c:179
 kasan_quarantine_reduce+0x148/0x160 mm/kasan/quarantine.c:286
 __kasan_slab_alloc+0x22/0x80 mm/kasan/common.c:340
 kasan_slab_alloc include/linux/kasan.h:250 [inline]
 slab_post_alloc_hook mm/slub.c:4191 [inline]
 slab_alloc_node mm/slub.c:4240 [inline]
 kmem_cache_alloc_noprof+0x1c1/0x3c0 mm/slub.c:4247
 getname_flags+0xb8/0x540 fs/namei.c:146
 getname include/linux/fs.h:2919 [inline]
 getname_maybe_null include/linux/fs.h:2926 [inline]
 vfs_fstatat+0x43/0x170 fs/stat.c:370
 __do_sys_newfstatat fs/stat.c:542 [inline]
 __se_sys_newfstatat fs/stat.c:536 [inline]
 __x64_sys_newfstatat+0x116/0x190 fs/stat.c:536
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xfa/0x3b0 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f

Memory state around the buggy address:
 ffff88803f7f5500: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
 ffff88803f7f5580: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
>ffff88803f7f5600: 00 00 00 00 00 00 00 00 fc fc fc fc fc fc fc fc
                                                    ^
 ffff88803f7f5680: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
 ffff88803f7f5700: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
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