==================================================================
BUG: KASAN: stack-out-of-bounds in memcpy include/linux/string.h:447 [inline]
BUG: KASAN: stack-out-of-bounds in packet_recvmsg+0x45a/0x10e0 net/packet/af_packet.c:3443
Write of size 134 at addr ffffc9000180fb90 by task syz-executor127/5956

CPU: 0 PID: 5956 Comm: syz-executor127 Not tainted 5.11.0-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 __dump_stack lib/dump_stack.c:79 [inline]
 dump_stack+0x9a/0xcc lib/dump_stack.c:120
 print_address_description.constprop.0.cold+0x5/0x2f8 mm/kasan/report.c:230
 __kasan_report mm/kasan/report.c:396 [inline]
 kasan_report.cold+0x79/0xd5 mm/kasan/report.c:413
 check_memory_region_inline mm/kasan/generic.c:179 [inline]
 check_memory_region+0x13d/0x180 mm/kasan/generic.c:185
 memcpy+0x39/0x60 mm/kasan/shadow.c:65
 memcpy include/linux/string.h:447 [inline]
 packet_recvmsg+0x45a/0x10e0 net/packet/af_packet.c:3443
 sock_recvmsg_nosec net/socket.c:886 [inline]
 sock_recvmsg net/socket.c:904 [inline]
 sock_recvmsg net/socket.c:900 [inline]
 ____sys_recvmsg+0x25e/0x620 net/socket.c:2568
 ___sys_recvmsg+0xe2/0x1a0 net/socket.c:2610
 __sys_recvmsg+0xaf/0x140 net/socket.c:2646
 do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46
 entry_SYSCALL_64_after_hwframe+0x44/0xa9
RIP: 0033:0x7f4f40810c19
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 41 15 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 c0 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ffda9f91bd8 EFLAGS: 00000246 ORIG_RAX: 000000000000002f
RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f4f40810c19
RDX: 0000000000000000 RSI: 0000000020000500 RDI: 0000000000000005
RBP: 0000000000000000 R08: 000000000000000d R09: 000000000000000d
R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffda9f91bf0
R13: 00000000000f4240 R14: 0000000000013483 R15: 00007ffda9f91be4


addr ffffc9000180fb90 is located in stack of task syz-executor127/5956 at offset 32 in frame:
 ____sys_recvmsg+0x0/0x620 include/linux/audit.h:313

this frame has 1 object:
 [32, 160) 'addr'

Memory state around the buggy address:
 ffffc9000180fb00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 f1 f1
 ffffc9000180fb80: f1 f1 00 00 00 00 00 00 00 00 00 00 00 00 00 00
>ffffc9000180fc00: 00 00 f3 f3 f3 f3 00 00 00 00 00 00 00 00 00 00
                         ^
 ffffc9000180fc80: 00 f1 f1 f1 f1 00 f2 f2 f2 00 f2 f2 f2 00 00 00
 ffffc9000180fd00: 00 00 00 00 f2 f2 f2 f2 f2 00 00 00 00 00 00 00
==================================================================