Diffusion FreeBSD src repository fabbc3d879cc

softdep_flush(): do not access ump after we acked FLUSH_EXIT and unlocked SU…
fabbc3d879cc
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Description

softdep_flush(): do not access ump after we acked FLUSH_EXIT and unlocked SU lock

otherwise we might follow a pointer in the freed memory.

Reviewed by: mckusick
Tested by: pho
Sponsored by: The FreeBSD Foundation
MFC after: 2 weeks
Differential revision: https://reviews.freebsd.org/D29178

Details

Provenance

kib	Authored on Feb 28 2021, 10:45 PM

Reviewer

mckusick

Differential Revision

D29178: UFS SU: handle races on remounts rw<->ro

Parents

rG7c7a6681fab2: ffs: clear MNT_SOFTDEP earlier when remounting rw to ro

Branches

Unknown

Tags

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Event Timeline

kib committed rGfabbc3d879cc: softdep_flush(): do not access ump after we acked FLUSH_EXIT and unlocked SU… (authored by kib).Mar 12 2021, 11:31 AM

kib added an edge: D29178: UFS SU: handle races on remounts rw<->ro.Mar 12 2021, 11:33 AM

kib mentioned this in rGa326a8f616e9: softdep_flush(): do not access ump after we acked FLUSH_EXIT and unlocked SU….Aug 14 2021, 10:23 AM

Changes (1)

Path

Size

sys/

ufs/

ffs/

ffs_softdep.c

rGfabbc3d879cc

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