libubox/tests/cram/test_runqueue.t

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check that runqueue is producing expected results:
$ [ -n "$TEST_BIN_DIR" ] && export PATH="$TEST_BIN_DIR:$PATH"
$ valgrind --quiet --leak-check=full test-runqueue
libubox: runqueue: fix use-after-free bug Fixes a use-after-free bug in runqueue_task_kill(): Invalid read of size 8 at runqueue_task_kill (runqueue.c:200) by uloop_process_timeouts (uloop.c:505) by uloop_run_timeout (uloop.c:542) by uloop_run (uloop.h:111) by main (tests/test-runqueue.c:126) Address 0x5a4b058 is 24 bytes inside a block of size 208 free'd at free by runqueue_task_complete (runqueue.c:234) by runqueue_task_kill (runqueue.c:199) by uloop_process_timeouts (uloop.c:505) by uloop_run_timeout (uloop.c:542) by uloop_run (uloop.h:111) by main (tests/test-runqueue.c:126) Block was alloc'd at at calloc by add_sleeper (tests/test-runqueue.c:101) by main (tests/test-runqueue.c:123) Since commit 11e8afea (runqueue should call the complete handler from more places) the call to the complete() callback has been moved to runqueue_task_complete(). However in runqueue_task_kill() runqueue_task_complete() is called before the kill() callback. This will result in a use after free if the complete() callback frees the task struct. Furthermore runqueue_start_next() is already called at the end of runqueue_task_complete(), so there is no need to call it again in runqueue_task_kill(). The issue was that the _complete() callback frees the memory used by the task struct, which is then read after the _complete() callback returns. Ref: FS#3016 Signed-off-by: Alban Bedel <albeu@free.fr> [initial test case, kill cb comment fix] Signed-off-by: Chris Nisbet <nischris@gmail.com> [testcase improvements and commit subject/description tweaks] Signed-off-by: Petr Štetiar <ynezz@true.cz>
2020-04-23 05:35:23 +02:00
[1/1] start 'sleep 1' (killer)
[1/1] killing process (killer)
[0/1] finish 'sleep 1' (killer)
[0/1] finish 'sleep 1' (killer)
[0/1] finish 'sleep 1' (killer)
[1/1] start 'sleep 1' (sleeper)
[1/1] cancel 'sleep 1' (sleeper)
[0/1] finish 'sleep 1' (sleeper)
[1/1] start 'sleep 1' (sleeper)
[1/1] cancel 'sleep 1' (sleeper)
[0/1] finish 'sleep 1' (sleeper)
[1/1] start 'sleep 1' (sleeper)
[1/1] cancel 'sleep 1' (sleeper)
[0/1] finish 'sleep 1' (sleeper)
All done!
$ test-runqueue-san
libubox: runqueue: fix use-after-free bug Fixes a use-after-free bug in runqueue_task_kill(): Invalid read of size 8 at runqueue_task_kill (runqueue.c:200) by uloop_process_timeouts (uloop.c:505) by uloop_run_timeout (uloop.c:542) by uloop_run (uloop.h:111) by main (tests/test-runqueue.c:126) Address 0x5a4b058 is 24 bytes inside a block of size 208 free'd at free by runqueue_task_complete (runqueue.c:234) by runqueue_task_kill (runqueue.c:199) by uloop_process_timeouts (uloop.c:505) by uloop_run_timeout (uloop.c:542) by uloop_run (uloop.h:111) by main (tests/test-runqueue.c:126) Block was alloc'd at at calloc by add_sleeper (tests/test-runqueue.c:101) by main (tests/test-runqueue.c:123) Since commit 11e8afea (runqueue should call the complete handler from more places) the call to the complete() callback has been moved to runqueue_task_complete(). However in runqueue_task_kill() runqueue_task_complete() is called before the kill() callback. This will result in a use after free if the complete() callback frees the task struct. Furthermore runqueue_start_next() is already called at the end of runqueue_task_complete(), so there is no need to call it again in runqueue_task_kill(). The issue was that the _complete() callback frees the memory used by the task struct, which is then read after the _complete() callback returns. Ref: FS#3016 Signed-off-by: Alban Bedel <albeu@free.fr> [initial test case, kill cb comment fix] Signed-off-by: Chris Nisbet <nischris@gmail.com> [testcase improvements and commit subject/description tweaks] Signed-off-by: Petr Štetiar <ynezz@true.cz>
2020-04-23 05:35:23 +02:00
[1/1] start 'sleep 1' (killer)
[1/1] killing process (killer)
[0/1] finish 'sleep 1' (killer)
[0/1] finish 'sleep 1' (killer)
[0/1] finish 'sleep 1' (killer)
[1/1] start 'sleep 1' (sleeper)
[1/1] cancel 'sleep 1' (sleeper)
[0/1] finish 'sleep 1' (sleeper)
[1/1] start 'sleep 1' (sleeper)
[1/1] cancel 'sleep 1' (sleeper)
[0/1] finish 'sleep 1' (sleeper)
[1/1] start 'sleep 1' (sleeper)
[1/1] cancel 'sleep 1' (sleeper)
[0/1] finish 'sleep 1' (sleeper)
All done!