Stanislav Fomichev 530e214c5b bpf, test_run: Fix overflow in XDP frags bpf_test_finish ... Syzkaller reports another issue: WARNING: CPU: 0 PID: 10775 at include/linux/thread_info.h:230 check_copy_size include/linux/thread_info.h:230 [inline] WARNING: CPU: 0 PID: 10775 at include/linux/thread_info.h:230 copy_to_user include/linux/uaccess.h:199 [inline] WARNING: CPU: 0 PID: 10775 at include/linux/thread_info.h:230 bpf_test_finish.isra.0+0x4b2/0x680 net/bpf/test_run.c:171 This can happen when the userspace buffer is smaller than head + frags. Return ENOSPC in this case. Fixes: 7855e0db15 ("bpf: test_run: add xdp_shared_info pointer in bpf_test_finish signature") Reported-by: syzbot+5f81df6205ecbbc56ab5@syzkaller.appspotmail.com Signed-off-by: Stanislav Fomichev <sdf@google.com> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net> Cc: Lorenzo Bianconi <lorenzo@kernel.org> Link: https://lore.kernel.org/bpf/20220228232332.458871-1-sdf@google.com		2022-03-02 01:09:15 +01:00
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Makefile	bpf: Add dummy BPF STRUCT_OPS for test purpose	2021-11-01 14:10:00 -07:00
bpf_dummy_struct_ops.c	bpf: reject program if a __user tagged memory accessed in kernel way	2022-01-27 12:03:46 -08:00
test_run.c	bpf, test_run: Fix overflow in XDP frags bpf_test_finish	2022-03-02 01:09:15 +01:00