| Message ID | 2a32e4723f7e56c675ffd6aa0762789e56dce2e1.1645096227.git.naveen.n.rao@linux.vnet.ibm.com (mailing list archive) |
|---|---|
| State | Not Applicable |
| Delegated to: | BPF |
| Headers | show |
| Series | powerpc/ftrace: Reserve instructions from function entry for ftrace | expand |
| Context | Check | Description |
|---|---|---|
| bpf/vmtest-bpf-next-PR | success | PR summary |
| bpf/vmtest-bpf-next | success | VM_Test |
| netdev/tree_selection | success | Guessing tree name failed - patch did not apply |
diff --git a/kernel/bpf/trampoline.c b/kernel/bpf/trampoline.c index 4b6974a195c138..c47c80874bee3f 100644 --- a/kernel/bpf/trampoline.c +++ b/kernel/bpf/trampoline.c @@ -124,8 +124,6 @@ static int is_ftrace_location(void *ip) addr = ftrace_location((long)ip); if (!addr) return 0; - if (WARN_ON_ONCE(addr != (long)ip)) - return -EFAULT; return 1; }
On some architectures, ftrace location can include multiple instructions, and does not necessarily match the function entry address returned by kallsyms_lookup(). Drop the check in is_ftrace_location() to accommodate the same. Signed-off-by: Naveen N. Rao <naveen.n.rao@linux.vnet.ibm.com> --- kernel/bpf/trampoline.c | 2 -- 1 file changed, 2 deletions(-)