Jesper Dangaard Brouer 5010e94842 samples/bpf: bpf_load.c detect and abort if ELF maps section size is wrong ...

The struct bpf_map_def was extended in commit fb30d4b712 ("bpf: Add tests
for map-in-map") with member unsigned int inner_map_idx.  This changed the size
of the maps section in the generated ELF _kern.o files.

Unfortunately the loader in bpf_load.c does not detect or handle this.  Thus,
older _kern.o files became incompatible, and caused hard-to-debug errors
where the syscall validation rejected BPF_MAP_CREATE request.

This patch only detect the situation and aborts load_bpf_file(). It also
add code comments warning people that read this loader for inspiration
for these pitfalls.

Fixes: fb30d4b712 ("bpf: Add tests for map-in-map")
Signed-off-by: Jesper Dangaard Brouer <brouer@redhat.com>
Acked-by: Alexei Starovoitov <ast@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

2017-04-30 22:41:59 -04:00

..

auxdisplay

samples: move auxdisplay example code from Documentation

2016-09-23 11:52:32 -06:00

blackfin

samples: move blackfin gptimers-example from Documentation

2016-10-10 07:12:02 -06:00

bpf

samples/bpf: bpf_load.c detect and abort if ELF maps section size is wrong

2017-04-30 22:41:59 -04:00

configfs

configfs: remove old API

2015-10-13 22:17:57 -07:00

connector

make use of make variable CURDIR instead of calling pwd

2016-12-11 12:12:56 +01:00

hidraw

HID: samples/hidraw: make it possible to select device

2015-03-15 10:11:21 -04:00

hw_breakpoint

perf: Add context field to perf_event

2011-07-01 11:06:38 +02:00

kdb

kdb: Add kdb kernel module sample

2010-10-29 13:14:39 -05:00

kfifo

kfifo API type safety

2013-11-15 09:32:23 +09:00

kobject

samples/kobject: be explicit in the module license

2015-03-25 13:41:42 +01:00

kprobes

samples/kretprobe: fix the wrong type

2016-08-04 08:50:07 -04:00

livepatch

livepatch: reuse module loader code to write relocations

2016-04-01 15:00:11 +02:00

mei

samples: move misc-devices/mei example code from Documentation

2016-09-23 11:51:43 -06:00

mic/mpssd

samples: move mic/mpssd example code from Documentation

2016-09-20 12:38:48 -06:00

pktgen

samples: Add an IPv6 '-6' option to the pktgen scripts

2016-07-20 22:16:02 -07:00

rpmsg

rpmsg: Allow callback to return errors

2016-09-08 22:15:25 -07:00

seccomp

samples/seccomp: fix 64-bit comparison macros

2017-01-09 17:22:03 +11:00

statx

statx: Include a mask for stx_attributes in struct statx

2017-04-03 01:06:00 -04:00

timers

samples: move timers example code from Documentation

2016-09-23 11:51:58 -06:00

trace_events

sched/core: Remove the tsk_cpus_allowed() wrapper

2017-03-02 08:42:24 +01:00

trace_printk

tracing: Add trace_printk sample code

2016-06-20 09:54:21 -04:00

uhid

HID: uhid: improve uhid example client

2013-09-04 11:35:14 +02:00

v4l

[media] vb2: replace void *alloc_ctxs by struct device *alloc_devs

2016-07-08 14:45:07 -03:00

vfio-mdev

vfio-mdev: remove some dead code

2017-01-11 12:12:37 -07:00

watchdog

samples: move watchdog example code from Documentation

2016-09-23 11:52:14 -06:00

Kconfig

statx: Add a system call to make enhanced file info available

2017-03-02 20:51:15 -05:00

Makefile

statx: Add a system call to make enhanced file info available

2017-03-02 20:51:15 -05:00