usercopy: Kernel memory overwrite attempt detected to SLUB object 'pid' (offset 24, size 24)! ------------[ cut here ]------------ kernel BUG at mm/usercopy.c:102! Internal error: Oops - BUG: 00000000f2000800 [#1] PREEMPT SMP Modules linked in: CPU: 0 PID: 13537 Comm: syz-executor.1 Not tainted 6.2.0-rc7-syzkaller-17891-geaed33698e35 #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 : ffff80002219bb90 x29: ffff80002219bba0 x28: 000000000000001c x27: ffff00011f011a00 x26: 0000000020000200 x25: ffff80000cf42000 x24: fffffc0000000000 x23: 05ffc00000000200 x22: fffffc0004506b80 x21: ffff0001141ae818 x20: 0000000000000000 x19: 0000000000000018 x18: ffff80000bf9e9bc x17: 0000000000000000 x16: ffff00011f0123f8 x15: ffff80000dbc2118 x14: ffff00011f011a00 x13: 00000000ffffffff x12: 0000000000040000 x11: 0000000000004fcd x10: ffff800012d88000 x9 : 058879855083f800 x8 : 058879855083f800 x7 : ffff8000081634cc x6 : 0000000000000000 x5 : 0000000000000001 x4 : 0000000000000001 x3 : 0000000000000000 x2 : ffff0001fefbef08 x1 : 0000000100000000 x0 : 000000000000005d 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] check_copy_size include/linux/thread_info.h:235 [inline] copy_from_user include/linux/uaccess.h:160 [inline] copy_struct_from_user include/linux/uaccess.h:341 [inline] io_openat2_prep+0xcc/0x2b8 io_uring/openclose.c:89 io_init_req io_uring/io_uring.c:2194 [inline] io_submit_sqe io_uring/io_uring.c:2241 [inline] io_submit_sqes+0x338/0xbb8 io_uring/io_uring.c:2395 __do_sys_io_uring_enter io_uring/io_uring.c:3343 [inline] __se_sys_io_uring_enter io_uring/io_uring.c:3275 [inline] __arm64_sys_io_uring_enter+0x168/0x1308 io_uring/io_uring.c:3275 __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: 91360800 aa0903e1 f90003e8 94e6d2ef (d4210000) ---[ end trace 0000000000000000 ]---