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BUG: KASAN: stack-out-of-bounds in __get_unaligned_cpu32 include/linux/unaligned/packed_struct.h:19 [inline]
BUG: KASAN: stack-out-of-bounds in jhash+0x200/0x740 include/linux/jhash.h:82
Read of size 4 at addr ffffc90003b2f5a0 by task syz-executor.4/9289

CPU: 0 PID: 9289 Comm: syz-executor.4 Not tainted 6.8.0-syzkaller-05236-g443574b03387 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024
Call Trace:
 <TASK>
 __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
 __get_unaligned_cpu32 include/linux/unaligned/packed_struct.h:19 [inline]
 jhash+0x200/0x740 include/linux/jhash.h:82
 hash+0x339/0x410 kernel/bpf/bloom_filter.c:31
 bloom_map_push_elem+0xcc/0x180 kernel/bpf/bloom_filter.c:61
 bpf_prog_02d80071b9308953+0x47/0x4b
 bpf_dispatcher_nop_func include/linux/bpf.h:1234 [inline]
 __bpf_prog_run include/linux/filter.h:657 [inline]
 bpf_prog_run include/linux/filter.h:664 [inline]
 __bpf_trace_run kernel/trace/bpf_trace.c:2381 [inline]
 bpf_trace_run8+0x2ec/0x500 kernel/trace/bpf_trace.c:2426
 __bpf_trace_jbd2_handle_stats+0x47/0x60 include/trace/events/jbd2.h:210
 trace_jbd2_handle_stats include/trace/events/jbd2.h:210 [inline]
 jbd2_journal_stop+0xd3d/0xdc0 fs/jbd2/transaction.c:1869
 __ext4_journal_stop+0xfd/0x1a0 fs/ext4/ext4_jbd2.c:134
 ext4_create+0x2f9/0x550 fs/ext4/namei.c:2843
 lookup_open fs/namei.c:3498 [inline]
 open_last_lookups fs/namei.c:3567 [inline]
 path_openat+0x1425/0x3240 fs/namei.c:3797
 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
RIP: 0033:0x7ff9fd67dea9
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:00007ff9fe4260c8 EFLAGS: 00000246
 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 00007ff9fd7abf80 RCX: 00007ff9fd67dea9
RDX: 000000000000275a RSI: 0000000020000040 RDI: ffffffffffffff9c
RBP: 00007ff9fd6ca4a4 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000000b R14: 00007ff9fd7abf80 R15: 00007ffd8e381178
 </TASK>

The buggy address belongs to stack of task syz-executor.4/9289
 and is located at offset 0 in frame:
 bpf_trace_run8+0x0/0x500

This frame has 1 object:
 [32, 96) 'args'

The buggy address belongs to the virtual mapping at
 [ffffc90003b28000, ffffc90003b31000) created by:
 copy_process+0x5d1/0x3df0 kernel/fork.c:2219

The buggy address belongs to the physical page:
page:ffffea0000af5840 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x2bd61
memcg:ffff88807ab01402
flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff)
page_type: 0xffffffff()
raw: 00fff00000000000 0000000000000000 dead000000000122 0000000000000000
raw: 0000000000000000 0000000000000000 00000001ffffffff ffff88807ab01402
page dumped because: kasan: bad access detected
page_owner tracks the page as allocated
page last allocated via order 0, migratetype Unmovable, gfp_mask 0x102dc2(GFP_HIGHUSER|__GFP_NOWARN|__GFP_ZERO), pid 8729, tgid 8726 (syz-executor.4), ts 202491897191, free_ts 201258932407
 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_mpol+0x3de/0x650 mm/mempolicy.c:2133
 vm_area_alloc_pages mm/vmalloc.c:3135 [inline]
 __vmalloc_area_node mm/vmalloc.c:3211 [inline]
 __vmalloc_node_range+0x9a4/0x14a0 mm/vmalloc.c:3392
 alloc_thread_stack_node kernel/fork.c:309 [inline]
 dup_task_struct+0x3e9/0x7d0 kernel/fork.c:1114
 copy_process+0x5d1/0x3df0 kernel/fork.c:2219
 kernel_clone+0x21e/0x8d0 kernel/fork.c:2796
 __do_sys_clone kernel/fork.c:2939 [inline]
 __se_sys_clone kernel/fork.c:2923 [inline]
 __x64_sys_clone+0x258/0x2a0 kernel/fork.c:2923
 do_syscall_64+0xfb/0x240
 entry_SYSCALL_64_after_hwframe+0x6d/0x75
page last free pid 8688 tgid 8687 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
 napi_frag_unref include/linux/skbuff.h:3535 [inline]
 skb_release_data+0x3e4/0x870 net/core/skbuff.c:1130
 skb_release_all net/core/skbuff.c:1202 [inline]
 kfree_skb_add_bulk net/core/skbuff.c:1273 [inline]
 kfree_skb_list_reason+0x31a/0x7a0 net/core/skbuff.c:1295
 skb_release_data+0x4ae/0x870 net/core/skbuff.c:1134
 skb_release_all net/core/skbuff.c:1202 [inline]
 __kfree_skb net/core/skbuff.c:1216 [inline]
 kfree_skb_reason+0x195/0x390 net/core/skbuff.c:1252
 kfree_skb include/linux/skbuff.h:1267 [inline]
 kcm_sendmsg+0x1db4/0x27c0 net/kcm/kcmsock.c:943
 sock_sendmsg_nosec net/socket.c:730 [inline]
 __sock_sendmsg+0x221/0x270 net/socket.c:745
 ____sys_sendmsg+0x525/0x7d0 net/socket.c:2584
 ___sys_sendmsg net/socket.c:2638 [inline]
 __sys_sendmsg+0x2b0/0x3a0 net/socket.c:2667
 do_syscall_64+0xfb/0x240
 entry_SYSCALL_64_after_hwframe+0x6d/0x75

Memory state around the buggy address:
 ffffc90003b2f480: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
 ffffc90003b2f500: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
>ffffc90003b2f580: 00 00 00 00 f1 f1 f1 f1 00 00 00 00 00 00 00 00
                               ^
 ffffc90003b2f600: f3 f3 f3 f3 00 00 00 00 00 00 00 00 00 00 00 00
 ffffc90003b2f680: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
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