diff options
| author | Nicholas Piggin <[email protected]> | 2023-06-07 10:56:00 +1000 |
|---|---|---|
| committer | Michael Ellerman <[email protected]> | 2023-06-09 16:35:52 +1000 |
| commit | dfaed3e1fa7099de8de4e89cbe7eb9c1bca27dfe (patch) | |
| tree | 44c4ba84a5a96e18e424ea3dbbcd8e45d64729f0 /tools/perf/scripts/python | |
| parent | 719dfd5925e186e09a2a6f23016936ac436f3d78 (diff) | |
powerpc/64s/radix: Fix exit lazy tlb mm switch with irqs enabled
Switching mm and tinkering with current->active_mm should be done with
irqs disabled. There is a path where exit_lazy_flush_tlb can be called
with irqs enabled:
exit_lazy_flush_tlb
flush_type_needed
__flush_all_mm
tlb_finish_mmu
exit_mmap
Which results in the switching being done with irqs enabled, which is
incorrect.
Fixes: a665eec0a22e ("powerpc/64s/radix: Fix mm_cpumask trimming race vs kthread_use_mm")
Cc: [email protected] # v5.10+
Reported-by: Sachin Sant <[email protected]>
Link: https://lore.kernel.org/linuxppc-dev/[email protected]/
Tested-by: Sachin Sant <[email protected]>
Signed-off-by: Nicholas Piggin <[email protected]>
Signed-off-by: Michael Ellerman <[email protected]>
Link: https://msgid.link/[email protected]
Diffstat (limited to 'tools/perf/scripts/python')
0 files changed, 0 insertions, 0 deletions