Re: [PATCH bpf 1/2] bpf: fix out of bounds backwards jmps due to dead code removal

On Fri, May 10, 2019 at 6:03 PM Daniel Borkmann wrote: > > systemtap folks reported the following splat recently: ... > Note that unprivileged case is not affected from this. > > Fixes: 52875a04f4b2 ("bpf: verifier: remove dead code") > Fixes: 2cbd95a5c4fb ("bpf: change parameters of call/branch o

[PATCH bpf 1/2] bpf: fix out of bounds backwards jmps due to dead code removal

systemtap folks reported the following splat recently: [ 7790.862212] WARNING: CPU: 3 PID: 26759 at arch/x86/kernel/kprobes/core.c:1022 kprobe_fault_handler+0xec/0xf0 [...] [ 7790.864113] CPU: 3 PID: 26759 Comm: sshd Not tainted 5.1.0-0.rc7.git1.1.fc31.x86_64 #1 [ 7790.864198] Hardware n