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| author | Miroslav Benes <mbenes@suse.cz> | 2020-08-31 14:26:31 +0200 |
|---|---|---|
| committer | Steven Rostedt (VMware) <rostedt@goodmis.org> | 2020-09-18 12:19:08 -0400 |
| commit | d5e47505e02666d5b3fe99212e0100791847dc8d (patch) | |
| tree | 697631edc4da139080915b5e313b0c335a4da1e2 /kernel/cred.c | |
| parent | 3031313eb3d549b7ad6f9fbcc52ba04412e3eb9e (diff) | |
ftrace: Free the trampoline when ftrace_startup() fails
Commit fc0ea795f53c ("ftrace: Add symbols for ftrace trampolines")
missed to remove ops from new ftrace_ops_trampoline_list in
ftrace_startup() if ftrace_hash_ipmodify_enable() fails there. It may
lead to BUG if such ops come from a module which may be removed.
Moreover, the trampoline itself is not freed in this case.
Fix it by calling ftrace_trampoline_free() during the rollback.
Link: https://lkml.kernel.org/r/20200831122631.28057-1-mbenes@suse.cz
Fixes: fc0ea795f53c ("ftrace: Add symbols for ftrace trampolines")
Fixes: f8b8be8a310a ("ftrace, kprobes: Support IPMODIFY flag to find IP modify conflict")
Signed-off-by: Miroslav Benes <mbenes@suse.cz>
Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
Diffstat (limited to 'kernel/cred.c')
0 files changed, 0 insertions, 0 deletions