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0aa35162d2a1ed7ae5303b8d91f7290d3b8b9219
linux/kernel/bpf
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Yafang Shao 0aa35162d2 bpf: Fix uninitialized symbol in bpf_perf_link_fill_kprobe() 
The commit 1b715e1b0e ("bpf: Support ->fill_link_info for perf_event") leads
to the following Smatch static checker warning:

    kernel/bpf/syscall.c:3416 bpf_perf_link_fill_kprobe()
    error: uninitialized symbol 'type'.

That can happens when uname is NULL. So fix it by verifying the uname when we
really need to fill it.

Fixes: 1b715e1b0e ("bpf: Support ->fill_link_info for perf_event")
Reported-by: Dan Carpenter <dan.carpenter@linaro.org>
Signed-off-by: Yafang Shao <laoar.shao@gmail.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: Yonghong Song <yonghong.song@linux.dev>
Acked-by: Jiri Olsa <jolsa@kernel.org>
Closes: https://lore.kernel.org/bpf/85697a7e-f897-4f74-8b43-82721bebc462@kili.mountain
Link: https://lore.kernel.org/bpf/20230813141900.1268-2-laoar.shao@gmail.com
2023-08-16 16:44:23 +02:00
..
preload
bpf: make preloaded map iterators to display map elements count
2023-07-06 12:42:25 -07:00
arraymap.c
bpf: return long from bpf_map_ops funcs
2023-03-22 15:11:30 -07:00
bloom_filter.c
bpf: Centralize permissions checks for all BPF map types
2023-06-19 14:04:04 +02:00
bpf_cgrp_storage.c
bpf: Teach verifier that certain helpers accept NULL pointer.
2023-04-04 16:57:16 -07:00
bpf_inode_storage.c
Merge tag 'net-next-6.4' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next
2023-04-26 16:07:23 -07:00
bpf_iter.c
bpf: implement numbers iterator
2023-03-08 16:19:51 -08:00
bpf_local_storage.c
bpf: Centralize permissions checks for all BPF map types
2023-06-19 14:04:04 +02:00
bpf_lru_list.c
bpf: Address KCSAN report on bpf_lru_list
2023-05-12 12:01:03 -07:00
bpf_lru_list.h
bpf: lru: Remove unused declaration bpf_lru_promote()
2023-08-08 17:21:42 -07:00
bpf_lsm.c
bpf: Fix the kernel crash caused by bpf_setsockopt().
2023-01-26 23:26:40 -08:00
bpf_struct_ops_types.h
bpf: Add dummy BPF STRUCT_OPS for test purpose
2021-11-01 14:10:00 -07:00
bpf_struct_ops.c
bpf: Support default .validate() and .update() behavior for struct_ops links
2023-08-14 22:23:39 -07:00
bpf_task_storage.c
bpf: Teach verifier that certain helpers accept NULL pointer.
2023-04-04 16:57:16 -07:00
btf.c
net: invert the netdevice.h vs xdp.h dependency
2023-08-03 08:38:07 -07:00
cgroup_iter.c
cgroup: bpf: use cgroup_lock()/cgroup_unlock() wrappers
2023-03-17 12:07:13 -10:00
cgroup.c
Merge tag 'for-netdev' of https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next
2023-05-16 19:50:05 -07:00
core.c
bpf: fix bpf_probe_read_kernel prototype mismatch
2023-08-02 14:14:17 -07:00
cpumap.c
Merge tag 'for-netdev' of https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next
2023-08-03 15:34:36 -07:00
cpumask.c
bpf: Convert bpf_cpumask to bpf_mem_cache_free_rcu.
2023-07-12 23:45:23 +02:00
devmap.c
bpf, devmap: Remove unused dtab field from bpf_dtab_netdev
2023-07-31 18:26:08 -07:00
disasm.c
bpf: change bpf_alu_sign_string and bpf_movsx_string to static
2023-08-04 16:15:50 -07:00
disasm.h
bpf: Relicense disassembler as GPL-2.0-only OR BSD-2-Clause
2021-09-02 14:49:23 +02:00
dispatcher.c
bpf: Synchronize dispatcher update with bpf_dispatcher_xdp_func
2022-12-14 12:02:14 -08:00
hashtab.c
bpf: populate the per-cpu insertions/deletions counters for hashmaps
2023-07-06 12:42:25 -07:00
helpers.c
bpf: fix bpf_dynptr_slice() to stop return an ERR_PTR.
2023-08-04 14:53:15 -07:00
inode.c
bpf: Support O_PATH FDs in BPF_OBJ_PIN and BPF_OBJ_GET commands
2023-05-23 23:31:42 +02:00
Kconfig
bpf: Add fd-based tcx multi-prog infra with link support
2023-07-19 10:07:27 -07:00
link_iter.c
bpf: Add bpf_link iterator
2022-05-10 11:20:45 -07:00
local_storage.c
Merge tag 'cgroup-for-6.4' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup
2023-04-29 10:05:22 -07:00
log.c
bpf: drop unnecessary user-triggerable WARN_ONCE in verifierl log
2023-05-16 22:34:50 -07:00
lpm_trie.c
bpf: Centralize permissions checks for all BPF map types
2023-06-19 14:04:04 +02:00
Makefile
bpf: Add fd-based tcx multi-prog infra with link support
2023-07-19 10:07:27 -07:00
map_in_map.c
bpf: Fix elem_size not being set for inner maps
2023-06-02 16:22:12 -07:00
map_in_map.h
…
map_iter.c
bpf: allow any program to use the bpf_map_sum_elem_count kfunc
2023-07-19 09:48:53 -07:00
memalloc.c
bpf: Non-atomically allocate freelist during prefill
2023-07-28 09:41:10 -07:00
mmap_unlock_work.h
bpf: Introduce helper bpf_find_vma
2021-11-07 11:54:51 -08:00
mprog.c
bpf: Fix mprog detachment for empty mprog entry
2023-08-04 09:35:39 -07:00
net_namespace.c
net: Add includes masked by netdevice.h including uapi/bpf.h
2021-12-29 20:03:05 -08:00
offload.c
net: invert the netdevice.h vs xdp.h dependency
2023-08-03 08:38:07 -07:00
percpu_freelist.c
bpf: Initialize same number of free nodes for each pcpu_freelist
2022-11-11 12:05:14 -08:00
percpu_freelist.h
bpf: Use raw_spin_trylock() for pcpu_freelist_push/pop in NMI
2020-10-06 00:04:11 +02:00
prog_iter.c
…
queue_stack_maps.c
bpf: Centralize permissions checks for all BPF map types
2023-06-19 14:04:04 +02:00
reuseport_array.c
bpf: Centralize permissions checks for all BPF map types
2023-06-19 14:04:04 +02:00
ringbuf.c
bpf: Remove unnecessary ring buffer size check
2023-07-05 14:09:45 +02:00
stackmap.c
bpf: Centralize permissions checks for all BPF map types
2023-06-19 14:04:04 +02:00
syscall.c
bpf: Fix uninitialized symbol in bpf_perf_link_fill_kprobe()
2023-08-16 16:44:23 +02:00
sysfs_btf.c
bpf: Load and verify kernel module BTFs
2020-11-10 15:25:53 -08:00
task_iter.c
bpf: keep a reference to the mm, in case the task is dead.
2022-12-28 14:11:48 -08:00
tcx.c
tcx: Fix splat during dev unregister
2023-07-31 14:44:02 -07:00
tnum.c
bpf, tnums: Provably sound, faster, and more precise algorithm for tnum_mul
2021-06-01 13:34:15 +02:00
trampoline.c
bpf: Fix memleak due to fentry attach failure
2023-05-15 23:41:59 +02:00
verifier.c
bpf: Fix an incorrect verification success with movsx insn
2023-08-07 16:23:35 -07:00