linux/tools/testing
Tengda Wu a63a631c9b selftests/bpf: Fix freplace_link segfault in tailcalls prog test
There are two bpf_link__destroy(freplace_link) calls in
test_tailcall_bpf2bpf_freplace(). After the first bpf_link__destroy()
is called, if the following bpf_map_{update,delete}_elem() throws an
exception, it will jump to the "out" label and call bpf_link__destroy()
again, causing double free and eventually leading to a segfault.

Fix it by directly resetting freplace_link to NULL after the first
bpf_link__destroy() call.

Fixes: 021611d33e ("selftests/bpf: Add test to verify tailcall and freplace restrictions")
Signed-off-by: Tengda Wu <wutengda@huaweicloud.com>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Reviewed-by: Leon Hwang <leon.hwang@linux.dev>
Link: https://lore.kernel.org/bpf/20250122022838.1079157-1-wutengda@huaweicloud.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
2025-02-03 03:33:51 -08:00
..
crypto/chacha20-s390
cxl cxl changes for v6.14 2025-01-29 11:23:22 -08:00
fault-injection failcmd: make failcmd.sh executable 2024-09-01 20:43:32 -07:00
ktest ktest.pl: Fix typo "accesing" 2024-12-18 16:51:50 -05:00
kunit The various patchsets are summarized below. Plus of course many 2025-01-26 18:36:23 -08:00
memblock memblock: updates for 6.12-rc1 2024-09-25 11:35:19 -07:00
nvdimm Get rid of 'remove_new' relic from platform driver struct 2024-12-01 15:12:43 -08:00
radix-tree Xarray: do not return sibling entries from xas_find_marked() 2025-01-24 22:47:27 -08:00
scatterlist
selftests selftests/bpf: Fix freplace_link segfault in tailcalls prog test 2025-02-03 03:33:51 -08:00
shared tools: fix atomic_set() definition to set the value correctly 2025-01-12 19:03:35 -08:00
vma tools: add VM_WARN_ON_VMG definition 2025-01-25 20:22:46 -08:00
vsock vsock/test: Add test for connect() retries 2025-01-29 18:50:37 -08:00