Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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linux
Merge tag 'perf_urgent_for_v6.13_rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull perf fix from Borislav Petkov:
- Fix a #GP in the perf user callchain code caused by a race between
uprobe freeing the task and the bpf profiler unwinding the task's
user stack
* tag 'perf_urgent_for_v6.13_rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
uprobes: Fix race in uprobe_free_utask
+1
-1
kernel/events/uprobes.c
+1
-1
kernel/events/uprobes.c
···
1915
if (!utask)
1916
return;
1917
1918
WARN_ON_ONCE(utask->active_uprobe || utask->xol_vaddr);
1919
1920
timer_delete_sync(&utask->ri_timer);
···
1925
ri = free_ret_instance(ri, true /* cleanup_hprobe */);
1926
1927
kfree(utask);
1928
-
t->utask = NULL;
1929
}
1930
1931
#define RI_TIMER_PERIOD (HZ / 10) /* 100 ms */
···
1915
if (!utask)
1916
return;
1917
1918
+
t->utask = NULL;
1919
WARN_ON_ONCE(utask->active_uprobe || utask->xol_vaddr);
1920
1921
timer_delete_sync(&utask->ri_timer);
···
1924
ri = free_ret_instance(ri, true /* cleanup_hprobe */);
1925
1926
kfree(utask);
1927
}
1928
1929
#define RI_TIMER_PERIOD (HZ / 10) /* 100 ms */