Peter Zijlstra aebfd12521 x86/ibt,ftrace: Search for __fentry__ location ...

Currently a lot of ftrace code assumes __fentry__ is at sym+0. However
with Intel IBT enabled the first instruction of a function will most
likely be ENDBR.

Change ftrace_location() to not only return the __fentry__ location
when called for the __fentry__ location, but also when called for the
sym+0 location.

Then audit/update all callsites of this function to consistently use
these new semantics.

Suggested-by: Steven Rostedt <[email protected]>
Signed-off-by: Peter Zijlstra (Intel) <[email protected]>
Acked-by: Masami Hiramatsu <[email protected]>
Acked-by: Josh Poimboeuf <[email protected]>
Link: https://lore.kernel.org/r/[email protected]

2022-03-15 10:32:37 +01:00

..

preload

bpf/preload: Clean up .gitignore and "clean-files" target

2021-10-20 10:39:04 -07:00

arraymap.c

Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net

2021-10-28 10:43:58 -07:00

bloom_filter.c

bpf: Add missing map_get_next_key method to bloom filter map.

2021-12-29 09:38:31 -08:00

bpf_inode_storage.c

bpf: Allow bpf_local_storage to be used by sleepable programs

2021-12-29 17:54:40 -08:00

bpf_iter.c

bpf: Add bpf_loop helper

2021-11-30 10:56:28 -08:00

bpf_local_storage.c

bpf: Allow bpf_local_storage to be used by sleepable programs

2021-12-29 17:54:40 -08:00

bpf_lru_list.c

…

bpf_lru_list.h

…

bpf_lsm.c

bpf: Fix renaming task_getsecid_subj->current_getsecid_subj.

2022-01-24 20:20:51 -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: Rename btf_member accessors.

2021-12-02 11:18:34 -08:00

bpf_task_storage.c

bpf: Allow bpf_local_storage to be used by sleepable programs

2021-12-29 17:54:40 -08:00

btf.c

bpf: Fix crash due to out of bounds access into reg2btf_ids.

2022-02-16 12:46:51 -08:00

cgroup.c

bpf: Add MEM_RDONLY for helper args that are pointers to rdonly mem.

2021-12-18 13:27:41 -08:00

core.c

bpf, docs: Prune all references to "internal BPF"

2021-11-30 10:52:11 -08:00

cpumap.c

xdp: Move conversion to xdp_frame out of map functions

2022-01-05 19:46:32 -08:00

devmap.c

xdp: Move conversion to xdp_frame out of map functions

2022-01-05 19:46:32 -08:00

disasm.c

bpf: Relicense disassembler as GPL-2.0-only OR BSD-2-Clause

2021-09-02 14:49:23 +02:00

disasm.h

bpf: Relicense disassembler as GPL-2.0-only OR BSD-2-Clause

2021-09-02 14:49:23 +02:00

dispatcher.c

…

hashtab.c

bpf: Replace callers of BPF_CAST_CALL with proper function typedef

2021-09-28 16:27:18 -07:00

helpers.c

bpf: Emit bpf_timer in vmlinux BTF

2022-02-11 13:21:47 -08:00

inode.c

bpf: Fix mount source show for bpffs

2022-01-11 10:48:17 +01:00

Kconfig

bpf: Disallow unprivileged bpf by default

2021-11-01 17:06:47 +01:00

local_storage.c

bpf: Use struct_size() helper

2021-12-21 15:35:48 -08:00

lpm_trie.c

bpf: Fix typo in a comment in bpf lpm_trie.

2021-12-30 18:42:34 -08:00

Makefile

bpf: Prepare relo_core.c for kernel duty.

2021-12-02 11:18:34 -08:00

map_in_map.c

bpf: Remember BTF of inner maps.

2021-07-15 22:31:10 +02:00

map_in_map.h

…

map_iter.c

bpf: Introduce MEM_RDONLY flag

2021-12-18 13:27:41 -08:00

mmap_unlock_work.h

bpf: Introduce helper bpf_find_vma

2021-11-07 11:54:51 -08:00

net_namespace.c

net: Add includes masked by netdevice.h including uapi/bpf.h

2021-12-29 20:03:05 -08:00

offload.c

…

percpu_freelist.c

…

percpu_freelist.h

…

prog_iter.c

…

queue_stack_maps.c

…

reuseport_array.c

bpf: Use struct_size() helper

2021-12-21 15:35:48 -08:00

ringbuf.c

bpf: Use VM_MAP instead of VM_ALLOC for ringbuf

2022-02-02 23:15:24 -08:00

stackmap.c

bpf: Guard against accessing NULL pt_regs in bpf_get_task_stack()

2022-01-15 12:21:23 +11:00

syscall.c

bpf: Add schedule points in batch ops

2022-02-17 10:48:26 -08:00

sysfs_btf.c

…

task_iter.c

bpf: Introduce btf_tracing_ids

2021-11-12 10:19:09 -08:00

tnum.c

bpf, tnums: Provably sound, faster, and more precise algorithm for tnum_mul

2021-06-01 13:34:15 +02:00

trampoline.c

x86/ibt,ftrace: Search for __fentry__ location

2022-03-15 10:32:37 +01:00

verifier.c

bpf: Fix ringbuf memory type confusion when passing to helpers

2022-01-19 01:21:46 +01:00