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Differential D37628

mrsas: Don't leak a stack pointer value in the softc.
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Authored by jhb on Dec 7 2022, 8:36 PM.
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emaste
imp
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rG256b5d40e550: mrsas: Don't leak a stack pointer value in the softc.
rG9f0c0e6eede6: mrsas: Don't leak a stack pointer value in the softc.
Summary

mrsas_issue_blocked_cmd stores a pointer to an on-stack variable
in its softc so that the driver can call wakeup() on the correct
pointer. Once the loop around tsleep() has finished however, the
pointer is no longer needed and any further use would be invalid.
Clear sc->chan to NULL after the loop.

Reported by: GCC -Wdangling-pointer

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rG FreeBSD src repository
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sys/
dev/
mrsas/
1 line

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sys/dev/mrsas/mrsas.c

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