powerpc/entry32: Blacklist syscall exit points for kprobe.

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kprobe does not handle events happening in real mode.

The very last part of syscall cannot support a trap.
Add a symbol syscall_exit_finish to identify that part and
blacklist it from kprobe.

Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr>
Acked-by: Naveen N. Rao <naveen.n.rao@linux.vnet.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/23eddf49abb03d1359fa0be4206998eb3800f42c.1585670437.git.christophe.leroy@c-s.fr

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Christophe Leroy 2020-03-31 16:03:46 +00:00 • committed by Michael Ellerman

parent a616c44211

commit 7cdf440138

1 changed files with 3 additions and 0 deletions

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arch/powerpc/kernel/entry_32.S

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