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BUG: KASAN: invalid-access in __packet_get_status+0xb8/0x138 net/packet/af_packet.c:439
Read at addr fbff000018940000 by task syz-executor.0/12134
Pointer tag: [fb], memory tag: [f0]

CPU: 1 PID: 12134 Comm: syz-executor.0 Not tainted 6.9.0-rc1-syzkaller-00178-g317c7bc0ef03 #0
Hardware name: linux,dummy-virt (DT)
Call trace:
 dump_backtrace+0x94/0xec arch/arm64/kernel/stacktrace.c:317
 show_stack+0x18/0x24 arch/arm64/kernel/stacktrace.c:324
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0x78/0x90 lib/dump_stack.c:114
 print_address_description mm/kasan/report.c:377 [inline]
 print_report+0x108/0x618 mm/kasan/report.c:488
 kasan_report+0x88/0xac mm/kasan/report.c:601
 report_tag_fault arch/arm64/mm/fault.c:331 [inline]
 do_tag_recovery arch/arm64/mm/fault.c:343 [inline]
 __do_kernel_fault+0x1a0/0x1dc arch/arm64/mm/fault.c:385
 do_bad_area arch/arm64/mm/fault.c:485 [inline]
 do_tag_check_fault+0x78/0x8c arch/arm64/mm/fault.c:764
 do_mem_abort+0x44/0x94 arch/arm64/mm/fault.c:840
 el1_abort+0x40/0x60 arch/arm64/kernel/entry-common.c:432
 el1h_64_sync_handler+0xd8/0xe4 arch/arm64/kernel/entry-common.c:492
 el1h_64_sync+0x64/0x68 arch/arm64/kernel/entry.S:593
 __packet_get_status+0xb8/0x138 net/packet/af_packet.c:439
 packet_lookup_frame net/packet/af_packet.c:528 [inline]
 packet_current_frame net/packet/af_packet.c:538 [inline]
 tpacket_snd net/packet/af_packet.c:2794 [inline]
 packet_sendmsg+0x1bc/0x1560 net/packet/af_packet.c:3111
 sock_sendmsg_nosec net/socket.c:730 [inline]
 __sock_sendmsg+0x54/0x60 net/socket.c:745
 ____sys_sendmsg+0x1b0/0x2ac net/socket.c:2584
 ___sys_sendmsg+0xac/0x100 net/socket.c:2638
 __sys_sendmmsg+0xcc/0x260 net/socket.c:2724
 __do_sys_sendmmsg net/socket.c:2753 [inline]
 __se_sys_sendmmsg net/socket.c:2750 [inline]
 __arm64_sys_sendmmsg+0x28/0x38 net/socket.c:2750
 __invoke_syscall arch/arm64/kernel/syscall.c:34 [inline]
 invoke_syscall+0x48/0x114 arch/arm64/kernel/syscall.c:48
 el0_svc_common.constprop.0+0x40/0xe0 arch/arm64/kernel/syscall.c:133
 do_el0_svc+0x1c/0x28 arch/arm64/kernel/syscall.c:152
 el0_svc+0x34/0xf8 arch/arm64/kernel/entry-common.c:712
 el0t_64_sync_handler+0x100/0x12c arch/arm64/kernel/entry-common.c:730
 el0t_64_sync+0x19c/0x1a0 arch/arm64/kernel/entry.S:598

The buggy address belongs to the physical page:
page: refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x58940
head: order:4 entire_mapcount:0 nr_pages_mapped:0 pincount:0
flags: 0x1ffe08006000044(referenced|head|arch_2|arch_3|node=0|zone=0|lastcpupid=0xfff|kasantag=0x4)
page_type: 0xffffffff()
raw: 01ffe08006000044 0000000000000000 dead000000000122 0000000000000000
raw: 0000000000000000 0000000000000000 00000001ffffffff 0000000000000000
head: 01ffe08006000044 0000000000000000 dead000000000122 0000000000000000
head: 0000000000000000 0000000000000000 00000001ffffffff 0000000000000000
head: 01ffe08006000004 fffffdffc0625001 dead000000000122 00000000ffffffff
head: 0000001000000000 0000000000000000 00000000ffffffff 0000000000000000
page dumped because: kasan: bad access detected

Memory state around the buggy address:
 ffff00001893fe00: fe fe fe fe fe fe fe fe fe fe fe fe fe fe fe fe
 ffff00001893ff00: fe fe fe fe fe fe fe fe fe fe fe fe fe fe fe fe
>ffff000018940000: f0 f0 f0 f0 f0 f0 f0 f0 f0 f0 f0 f0 f0 f0 f0 f0
                   ^
 ffff000018940100: f0 f0 f0 f0 f0 f0 f0 f0 f0 f0 f0 f0 f0 f0 f0 f0
 ffff000018940200: f0 f0 f0 f0 f0 f0 f0 f0 f0 f0 f0 f0 f0 f0 f0 f0
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