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Initialize a stack variable in mprsas_get_sas_address_for_sata_disk

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Thought it's difficult to reproduce, I think this variable was responsible
for a use-after-free panic when a SATA disk timed out responding to a SATA
identify command during boot.

Submitted by:	slm
Reviewed by:	slm
MFC after:	4 weeks
Sponsored by:	Spectra Logic Corp
Differential Revision:	https://reviews.freebsd.org/D9364
This commit is contained in:
Alan Somers 2017-01-30 19:49:08 +00:00
parent aa3650ea36
commit 4e02badb18
1 changed files with 1 additions and 0 deletions
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sys/dev/mpr/mpr_sas_lsi.c
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@ -911,6 +911,7 @@ mprsas_get_sas_address_for_sata_disk(struct mpr_softc *sc,
u8 sas_status;
memset(&ata_identify, 0, sizeof(ata_identify));
memset(&mpi_reply, 0, sizeof(mpi_reply));
try_count = 0;
do {
rc = mprsas_get_sata_identify(sc, handle, &mpi_reply,