usercopy: Kernel memory exposure attempt detected from SLUB object 'skbuff_head_cache' (offset 168, size 4)!
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kernel BUG at mm/usercopy.c:102!
Internal error: Oops - BUG: 00000000f2000800 [#1] PREEMPT SMP
Modules linked in:
CPU: 0 PID: 22863 Comm: syz-executor.2 Not tainted 6.2.0-rc7-syzkaller-17907-g2d3827b3f393 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/21/2023
pstate: 60400005 (nZCv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--)
pc : usercopy_abort+0x90/0x94 mm/usercopy.c:90
lr : usercopy_abort+0x90/0x94 mm/usercopy.c:90
sp : ffff8000149db9a0
x29: ffff8000149db9b0 x28: ffff0001177f8000 x27: 0000000020000100
x26: 0000000000000014 x25: ffff80000cf52000 x24: fffffc0000000000
x23: 05ffc00000000200 x22: fffffc000338a040 x21: ffff0000ce2818a8
x20: 0000000000000001 x19: 0000000000000004 x18: ffff80000bfae9bc
x17: 0000000000000000 x16: ffff0001177f89d0 x15: ffff80000dbd2118
x14: ffff0001177f8000 x13: 00000000ffffffff x12: 0000000000040000
x11: 000000000000102a x10: ffff80001928e000 x9 : b627b65b16ddfb00
x8 : b627b65b16ddfb00 x7 : ffff8000081634cc x6 : 0000000000000000
x5 : 0000000000000001 x4 : 0000000000000001 x3 : 0000000000000000
x2 : ffff0001fefbff08 x1 : 0000000100000000 x0 : 000000000000006c
Call trace:
 usercopy_abort+0x90/0x94 mm/usercopy.c:90
 __check_heap_object+0xa8/0x100 mm/slub.c:4761
 check_heap_object mm/usercopy.c:196 [inline]
 __check_object_size+0x208/0x6b8 mm/usercopy.c:251
 check_object_size include/linux/thread_info.h:199 [inline]
 __copy_to_user include/linux/uaccess.h:115 [inline]
 put_cmsg+0x408/0x464 net/core/scm.c:238
 sock_recv_mark net/socket.c:975 [inline]
 __sock_recv_cmsgs+0x1fc/0x248 net/socket.c:984
 sock_recv_cmsgs include/net/sock.h:2728 [inline]
 packet_recvmsg+0x2d8/0x678 net/packet/af_packet.c:3482
 ____sys_recvmsg+0x110/0x3a0
 ___sys_recvmsg net/socket.c:2737 [inline]
 __sys_recvmsg+0x194/0x210 net/socket.c:2767
 __do_sys_recvmsg net/socket.c:2777 [inline]
 __se_sys_recvmsg net/socket.c:2774 [inline]
 __arm64_sys_recvmsg+0x2c/0x3c net/socket.c:2774
 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline]
 invoke_syscall+0x64/0x178 arch/arm64/kernel/syscall.c:52
 el0_svc_common+0xbc/0x180 arch/arm64/kernel/syscall.c:142
 do_el0_svc+0x48/0x110 arch/arm64/kernel/syscall.c:193
 el0_svc+0x58/0x14c arch/arm64/kernel/entry-common.c:637
 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655
 el0t_64_sync+0x190/0x194 arch/arm64/kernel/entry.S:591
Code: 91388800 aa0903e1 f90003e8 94e6d752 (d4210000) 
---[ end trace 0000000000000000 ]---